JP4846859B2 - Manufacturing method and apparatus for bag with chuck - Google Patents

Description

  The present invention relates to a method for manufacturing a bag body with a chuck and an apparatus therefor.

Currently, bags formed of resin sheets are widely used as bags for housing various articles including food and medical products.
Such a bag body is formed by overlapping two rectangular sheets forming a front surface portion and a rear surface portion as shown in Patent Document 1, and between the two sheets, each bottom side, Further, the left and right sides are fused together, the side facing the bottom is an opening, and a chuck is provided in the opening. A chuck | zipper is provided along the edge | side by the side of an opening part, and closes an opening part so that opening and closing is possible.

About the manufacturing method of such a bag body with a chuck, conventionally, as shown in Patent Document 2, two belt-like sheets are stacked, and the belt-like sheet is fed in the longitudinal direction of the sheet. During the movement in the longitudinal direction, a long chuck is fused to the sheet along the longitudinal direction of the sheet between both sheets. During this movement, a gap is formed in the longitudinal direction of the belt-like sheet. In addition, two sheets are fused so as to extend in a direction intersecting the longitudinal direction, and further, the side opposite to the chuck on the left and right sides of the sheet is fused along the longitudinal direction of the sheet with the moving direction of the belt-like sheet as the front-rear direction. By wearing, a plurality of cells were formed in the longitudinal direction of the belt-like sheet.
Eventually, the fusing portion in the direction intersecting the longitudinal direction of the belt-like sheet is cut along the fusing to divide the cells and form a plurality of bags with chucks. That is, by cutting, the fused portion along the longitudinal direction of the belt-like sheet becomes the bottom of the bag body, and the fused portion that extends in the direction intersecting the longitudinal direction of the sheet, that is, the cut fused portion, The left and right sides, and the side where the chuck is provided are the openings. The chuck extending in the longitudinal direction of the belt-like sheet by cutting the fused portion is also divided for each cell, that is, each bag body, so that the opening of each bag body can be opened and closed freely.

On the other hand, as a manufacturing apparatus of a bag body with a chuck, the attachment of the chuck and the fusion (cell formation) of each side are performed, and the belt-like sheet on which the chuck and the fusion part are formed is formed in a roll shape. Although it is wound and conveyed to a destination for packaging the article to be packaged, cutting of the belt-like sheet (division of each cell) is generally performed at the destination where the contents are packaged. In addition, there are many cases in which each side is fused to form a bag body after accommodating the article to be packaged. As a manufacturing apparatus for the bag body with a chuck, a roll is attached by attaching a chuck between two belt-like sheets. Usually, it is also often performed only to be wound into a shape.

JP 2006-206166 A JP-A-63-202436

However, when the chuck is attached along the longitudinal direction of the belt-like sheet as in the prior art, the chuck needs to be formed in the vicinity of the side that becomes the opening. The belt-like sheet wound after attaching the chuck does not become a cylindrical roll, but either one of the left and right ends swells more than the other, and handling is very troublesome. It was a thing.
For this reason, the inventor of the present application considered attaching the chuck in a direction crossing the longitudinal direction of the belt-like sheet, that is, the moving direction of the belt-like sheet being manufactured. This is because, if the chuck is provided along the width direction of the sheet with a gap with respect to the longitudinal direction of the sheet as described above, a cylindrical roll can be obtained after winding the belt-like sheet.
However, in reality, it has been found that it is difficult to stably insert and arrange the chuck into the sheet in the direction intersecting the longitudinal direction of the belt-shaped sheet. Unlike the conventional case where the chuck is attached along the longitudinal direction of the sheet, the chuck can be continuously attached to the sheet by following the sheet and extending the chuck in the longitudinal direction of the sheet. This is because it is necessary to intermittently attach the chuck. For this reason, completely different devices are required to stably attach the chuck to the sheet.
In view of the above circumstances, an object of the present invention is to provide a manufacturing method of a bag body with a chuck and a manufacturing apparatus thereof that can stably attach a chuck to a belt-like sheet.

The invention according to claim 1 of the present application is an upper surface portion and a lower surface portion that are each formed of a resin sheet and accommodates an object to be accommodated therebetween, left and right side portions that seal upper and lower side portions, and a front portion, An apparatus for manufacturing a bag body with a chuck having a rear portion serving as a bottom, an opening portion provided on an upper surface portion in the vicinity of the front portion and extending to the left and right, and a chuck for closing the opening portion so as to be freely opened and closed has the following configuration. Offer things.
In other words, this apparatus causes the belt-like sheet from which the upper surface portion of the bag body can be collected to move in the longitudinal direction of the belt-like sheet, and the chuck separate from the belt-like sheet along the lower surface of the belt-like sheet. A chuck placement portion and a chuck fusion portion for fusing a chuck along the lower surface of the belt-like sheet to the lower surface of the belt-like sheet. The left and right side portions of the belt-like sheet are the left and right side portions of the bag body to be formed, and the chuck placement portion is a chuck supply portion located on the right or left side of the belt-like sheet, with the moving direction of the belt-like sheet as the front-rear direction. A chuck moving unit that moves the chuck received from the chuck supplying unit to the lower surface of the belt-like sheet. The chuck moving unit includes a first sandwiching body, a second sandwiching body, and a driving unit. The chuck is sandwiched between the both sandwiching bodies, and the sandwiching body is sandwiched by the driving unit from the chuck supply unit side. The chuck is disposed on the lower surface of the belt-like sheet so as to cross the belt-like sheet by moving in the direction crossing the moving direction of the belt-like sheet. Both the first and second sandwiching bodies each include a pressing body that presses the chuck. The pressing body is a linear spring material having elasticity, the distal end side is a free end, the proximal end side is fixed to the sandwiching body, extends from one sandwiching body to the other sandwiching body, and the proximal end side is the distal end It is fixed obliquely with respect to the moving direction of the chuck so as to be closer to the chuck supply side than the side. The pressing body of the first clamping body and the pressing body of the second clamping body are arranged at different positions with respect to the moving direction of the chuck. Each pressing body abuts on the chuck on the tip side, and presses the chuck by bending due to elasticity, and suppresses the chuck from returning to the chuck supply unit side with respect to both the holding bodies moving toward the sheet. At the same time, after allowing the chuck to move to the both sides of the sandwiched sheet and the chuck is fused to the belt-like sheet, the chuck can be left on the belt-like sheet, and both the sandwiched bodies can be moved to the chuck supply unit side.

The invention according to claim 2 of the present application is the invention according to claim 1 of the present application, and provides an apparatus for manufacturing a bag body with a chuck having the following configuration.
Here, the chuck is composed of a locking portion and a locked portion formed separately from each other, and is fused to the belt-like sheet in a state where the locking portion is locked to the locked portion. The locking portion and the locked portion each include a substrate fused to the belt-like sheet, and one of the locking portion and the locked portion includes a female portion on the surface side of the substrate, The other one of the locking part and the locked part is provided with a male part that can be forcibly fitted to the female part, and the substrate of the locked part is locked toward the downstream side of the moving path of the belt-like sheet. An extension portion having a width larger than that of the substrate is provided, and a peel cord for opening the opening portion is temporarily fixed along the longitudinal direction of the chuck on the surface side of the extension portion.
The chuck fusion part includes a first fusion part disposed above the belt-like sheet in the belt-like sheet movement path, a first receiving part arranged below the first fusion part with the belt-like sheet interposed therebetween, A second fusion part disposed above the belt-like sheet on the downstream side of the belt-like sheet from the first fusion part, and a second receiving part arranged below the second fusion part with the belt-like sheet interposed therebetween. Prepare. The first fusion part and the first receiving part can be brought close to and separated from each other with the belt-like sheet interposed therebetween, and the second fused part and the second receiving part can be brought close to and separated from each other via the belt-like sheet. The chuck placement unit includes a chuck cutting unit. The chuck supply unit supplies a long chuck. The chuck moving unit includes a shuttle unit provided with the first and second clamping bodies. The driving unit moves the shuttle unit in a direction that intersects the moving direction of the seat. The first and second sandwiching bodies are each a long plate-like body that extends in the direction of movement of the shuttle portion and is longer than the lateral width of the belt-like sheet, and the both sandwiching bodies are arranged with a gap therebetween. Therefore, the leading end side is coordinated to the lower surface of the belt-like sheet between the first fusion part and the first receiving part by driving the shuttle part by the driving part. In a state where the leading end sides of both the first and second sandwiching bodies are coordinated to the lower surface of the belt-like sheet, the pressing body is moved to the upper surface of both the sandwiching bodies so as to be positioned closer to the chuck supply unit than the belt-like sheet. In a state where the chuck is not held and provided along the upper surface, the front end side of the pressing body extends over the gap between the two sandwiching bodies. The gap between the first and second holding bodies is smaller than the width of each of the long substrates provided in the locking portion and the locked portion. When the gap between the first and second holding bodies receives the male and female fitting portions of the chuck in the locked state, the first and second holding bodies lock the substrate of the locking portion above both the holding bodies. And the pressing body is in contact with the male or female part in the fitted state and bends and retreats from the gap between the two sandwiched bodies. The long chuck is held along the gap between the holding members by pressing the part or the female part. A shuttle part arrange | positions the chuck | zipper hold | maintained at the 1st and 2nd clamping body between the 1st melt | fusion part and the 1st receiving part by the said movement of a 1st and 2nd clamping body. The first fusion part is in close proximity to the first receiving part, and from above, the belt-like sheet, the substrate of the locking part, the first and second sandwiching bodies, and the extended part of the substrate of the locked part The rear portion is sandwiched between the first receiving portion and the back surface of the substrate of the locking portion is fused to the lower surface of the belt-like sheet. The shuttle unit is configured to retract the first and second sandwiching bodies to the chuck supply unit side while leaving the chuck fused to the belt-like sheet, and both sandwiching bodies are subsequent chucks that are attached to the sheet next by the receding. Is received from the base end side of both sandwiched bodies into the gap between both sandwiched bodies. The chuck cutting unit cuts the fused chuck from the subsequent chuck after the first and second sandwiching bodies have been withdrawn from the belt-like sheet. The sheet feeding unit stops the movement of the sheet while at least the chuck is welded along the lower surface of the belt-like sheet and is cut by the chuck cutting unit, and after the chuck is cut, the belt-like sheet is moved and the chuck is second-fused. It arrange | positions between a part and a 2nd receiving part. The second fused portion is close to the second receiving portion, so that the belt-like sheet and the extended portion of the substrate of the locked portion are arranged between the second fused portion and the second receiving portion from above. The substrate surface of the locked portion and the peel cord are fused to the lower surface of the belt-like sheet.

The invention according to claim 3 of the present application is an upper surface portion and a lower surface portion that are each formed of a resin sheet and accommodates an object to be accommodated therebetween, and right and left side portions that seal upper and lower side portions, and a front portion, In a manufacturing method of a bag body with a chuck comprising a rear portion serving as a bottom, an opening portion provided on an upper surface portion in the vicinity of the front portion and extending to the left and right, and a chuck for opening and closing the opening portion, the following configuration is adopted. Offer things.
That is, in this method, a sheet feeding portion that moves the belt-like sheet from which the upper surface portion of the bag body can be collected in the longitudinal direction of the belt-like sheet, and the chuck that is separate from the belt-like sheet are placed along the lower surface of the belt-like sheet Using the chuck placement portion and the chuck welded along the lower surface of the belt-like sheet to the lower surface of the belt-like sheet, the left and right side portions of the belt-like sheet are the left and right side portions of the bag body to be formed, The chuck placement unit includes a chuck supply unit located on the right or left side of the belt-like sheet with the moving direction of the belt-like sheet as a front-rear direction, and a chuck movement for moving the chuck received from the chuck supply unit to the lower surface of the belt-like sheet. And a chuck moving unit that includes a first sandwiching body, a second sandwiching body, and a drive unit. The chuck is sandwiched between the sandwiching bodies and driven. Both sides The chuck is disposed on the lower surface of the belt-like sheet so as to cross the belt-like sheet by moving the body from the chuck supply unit side to the belt-like sheet in a direction crossing the moving direction of the belt-like sheet. As the sandwiching body, one having a pressing body that presses the chuck is used, a linear spring material having elasticity is used for the pressing body, the distal end side of the pressing body is a free end, and the proximal end side is the sandwiching body. It is assumed that the pressing body extends from one clamping body to the other clamping body and is fixed obliquely with respect to the moving direction of the chuck so that the proximal end side is closer to the chuck supply side than the distal end side. The pressing body of the first clamping body and the pressing body of the second clamping body are arranged at positions different from each other with respect to the moving direction of the chuck, and the pressing body is brought into contact with the chuck at the tip side, respectively. To bend by By pressing the chuck, the chuck is prevented from returning to the chuck supply unit side with respect to both the holding bodies moving toward the sheet, and the chuck is allowed to move toward the sheet side with respect to the both holding bodies. Is fused to the belt-like sheet, the chuck is left on the belt-like sheet, and both the sandwiching bodies are moved to the chuck supply unit side.

The invention according to claim 4 of the present application is an upper surface portion and a lower surface portion that are each formed of a resin sheet and accommodates an object to be accommodated therebetween, and right and left side portions that seal upper and lower side portions, and a front portion, In a manufacturing method of a bag body with a chuck comprising a rear portion serving as a bottom, an opening portion provided on an upper surface portion in the vicinity of the front portion and extending to the left and right, and a chuck for opening and closing the opening portion, the following configuration is adopted. .
Here, the chuck is composed of a locking portion and a locked portion formed separately from each other, and is fused to the belt-like sheet in a state where the locking portion is locked to the locked portion. The locking portion and the locked portion each include a substrate that is fused to the belt-like sheet, and one of the locking portion and the locked portion includes a female portion on the surface side of the substrate. The other one of the locking portion and the locked portion includes a male portion that can be forcibly fitted to the female portion, and the base of the locked portion is engaged toward the downstream side of the moving path of the belt-like sheet. An extension portion having a width larger than the substrate of the stop portion is provided, and a peel cord for opening the opening portion is temporarily fixed along the longitudinal direction of the chuck on the surface side of the extension portion.
This method uses a sheet feeding unit, a sheet feeding unit, a chuck placement unit, a chuck fusion unit, a chuck cutting unit, a peel punch unit, a side seal unit, and a sheet winding unit in order. Sheet feeding step, chuck placement step, locking portion fusion step, chuck preparation step, chuck cutting step, locked portion fusion step, peel punch step, side seal step, sheet winding The sheet feeding step, and in the sheet feeding step, one of the two belt-like sheets from which the upper surface portion and the lower surface portion of the plurality of bags can be collected by the sheet feeding portion, The upper sheet is taken as the upper sheet and the other one is taken as the lower sheet from which the lower surface is taken, and both the upper and lower sheets are pulled out from the sheet supply section on which the sheet is wound by the sheet feeding section. The two sheets are moved in parallel with each other facing each other, and the moving direction of the upper and lower sheets is made to coincide with the front and rear direction of the target bag body. From the chuck placement process to the locked portion fusion process, the upper and lower sheets are moved between the upper sheet and the lower sheet at intervals necessary for the operation of each process, and the chuck placement process A chuck comprising: a chuck supply unit positioned on the right or left side of the upper sheet with the moving direction of the upper sheet as the front-rear direction; and a chuck moving unit that moves the chuck received from the chuck supply unit to the lower surface of the upper sheet An arrangement portion is used, and the chuck moving portion is a long plate-like body that is longer than the lateral width of the upper sheet and is arranged with a gap therebetween. 2 sandwiching bodies, a pressing body provided on the upper surface of each of the first and second sandwiching bodies, and a drive unit are used, and the pressing body uses a linear spring material having elasticity, The distal end side of the pressing body is a free end, the proximal end side is fixed to the holding body, the pressing body extends from one clamping body to the other clamping body, and the proximal end side of the pressing body is extended from the distal end side. Also, it is fixed obliquely with respect to the moving direction of the chuck so as to approach the chuck supply side, and the pressing body of the first clamping body and the pressing body of the second clamping body are arranged at different positions with respect to the moving direction of the chuck. In addition, the male and female fitting portions of the chuck in the locked state are received between the first and second sandwiching bodies, and the front end side of each pressing body is brought into contact with the chuck, and the pressing body is elastically moved. By pressing the male part or female part of the fitting state of the chuck, the board of the locking part is pushed The substrate of the locked portion is disposed below both the sandwiching bodies above both the sandwiching bodies, and the first and second sandwiching bodies are moved in the direction intersecting the longitudinal direction of the upper sheet by the driving unit, The chuck is placed along the lower surface of the sheet so as to cross the upper sheet, and the chuck is held against both sandwiched bodies that are moving toward the sheet by the above-mentioned pressing to the male part or female part in the fitted state of the chuck on the tip side of the pressing body. Is prevented from returning to the chuck supply unit side, and the chuck is allowed to move toward the sheet side with respect to both sandwiched bodies. A first fusion part disposed above the upper sheet, a first receiving part disposed below the first fusion part across the upper sheet, and on the downstream side of the upper sheet from the first fusion part A second fusion part disposed above the upper sheet; A second receiving part disposed below the second fusion part with the side sheet sandwiched therebetween, and the first fusion part and the first reception part can be brought close to and separated from each other with the upper sheet interposed therebetween. The part and the second receiving part are close to and away from each other with the upper sheet sandwiched between them, and by bringing the first fusion part close to the first receiving part, the upper sheet and the substrate of the locking part from above The first and second sandwiching bodies and the portion of the locked portion behind the extending portion of the substrate are sandwiched between the first receiving portion, and the back surface of the locking portion is fused to the lower surface of the upper sheet. In the chuck preparation step, the first and second sandwiching bodies are moved backward toward the chuck supply unit side, leaving the chuck with the engaging portion fused to the lower surface of the upper sheet, and then to the sheet by the backward movement. The subsequent chuck to be attached is received from the proximal end side of both sandwiched bodies into the gap between both sandwiched bodies, and the chuck is cut In extent, by the chuck cutting unit, after exit from the upper sheet of the first and second holding member, a chuck engaging portion upwardly sheets are fused disconnect from subsequent chuck,
In the locked portion fusion process, the sheet feeding portion moves the upper sheet between the second fusion portion and the second reception portion of the chuck fusion portion, and the second fusion portion is changed to the second reception portion. The upper sheet and the extended portion of the substrate of the locked portion are sandwiched between the second fused portion and the second receiving portion from above, and the substrate surface of the locked portion is The peel cord is fused to the lower surface of the upper sheet, and after the locked portion is fused to the upper sheet, the sheet feeding unit moves the upper sheet and the lower sheet in an overlapping manner, and in the peel punching process, the overlapping is performed. For the upper and lower sheets thus formed, a punch is provided near one end of the peel cord so that the peel cord can be easily pulled and pulled. , The left and right side parts of the bag body Seal, the sheet winding step, the sheet winding unit winds the upper and lower sheets and integrally.

Each invention of the present application can provide a manufacturing method of a bag body with a chuck and an apparatus for manufacturing the same, in which the belt-like sheet is fed in the longitudinal direction of the sheet and the chuck is attached to the lower surface of the belt-like sheet in the direction crossing the sheet . That is, each invention of the present application enables the chuck attached to the sheet to be intermittently and stably disposed on the lower surface of the belt-like sheet.
Specifically, in each invention of the present application, the chuck is returned to the chuck supply unit side by the pressing of the chuck by the pressing body with respect to the first and second sandwiching bodies moving toward the lower surface of the belt-like sheet. After the chuck is fused to the sheet, the chuck is left between the sheet and the middle sheet piece, and both the clamps are moved. It can be moved to the chuck supply section.
In particular, the pressing body of the first clamping body and the pressing body of the second clamping body are not arranged at the same position with respect to the movement direction of the chuck, but are arranged at different positions so that the soft chuck is hardly damaged. It was supposed to be.
Especially each invention of this application is suitable for manufacture of the bag body with a chuck | zipper which has an opening part in an upper surface part.

(A) is a schematic plan view of a bag body for manufacturing purposes, (B) is a schematic cross-sectional view showing a state where a locking portion and a locked portion of a chuck before being attached to the bag body are separated, ( (C) is a schematic cross-sectional view showing a state in which the locking portion and the locked portion of the chuck shown in (B) are locked, and (D) is an enlarged plan view of a partly cutout main portion of the bag body. (B) and (C) are schematic cross-sectional views taken along the line XX of FIG. 1 (A) in which the sheet is omitted in relation to the bag body M. (A) is a fragmentary enlarged partial cutaway sectional view of a main part of a bag body with a chuck before opening which is scheduled to be formed by the apparatus according to the present invention, and (B) is a principal part enlarged partial cutaway view showing a state of opening the bag body. Sectional drawing, (C) is a principal part enlarged partially cutaway sectional view showing a state in which the zipper of the bag body is opened after opening, that is, the lock is released. 1 is an overall schematic side view of an apparatus according to an embodiment of the present invention. FIG. 4 is a partially cutaway enlarged schematic end view showing a use state of the apparatus of FIG. 3. (A) is a partially cutaway schematic plan view of a part of the apparatus shown in FIG. 3, and (B) is a schematic YY sectional view of (A). The principal part perspective view of the said apparatus which concerns on one embodiment of this invention. Explanatory drawing which shows the flow of the manufacturing method of the bag body with a chuck | zipper which concerns on this invention. (A) is a schematic front view showing a state where the chuck placement portion places the chuck c on the upper sheet m1, and (B) is a view where the chuck c where the chuck fusion portion (first fusion portion) is placed is fused to the upper sheet. (C) A schematic front view showing a state in which the chuck placement portion is retracted from the upper side and the sheet m1, and (D) is a subsequent chuck c fused to the upper sheet m1 by the chuck cutting portion. The schematic front view which shows the state cut | disconnected from the chuck | zipper c.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Configuration of bag)
First, a bag body to be manufactured will be described. A plurality of bag bodies are formed from two resin-made belt-like sheets.
As shown in FIG. 1 (A) and FIG. 2 (A), each bag body M has a top surface Ma taken from one side of the belt-like sheet and an upper surface taken from the other side of the belt-like sheet in plan view. And a lower surface portion Mb overlapping the portion. The bag body M has a substantially rectangular shape in plan view, and includes left and right side portions M1 and M2, a front portion M3, and a rear portion M4 serving as a bottom. The upper surface portion Ma and the lower surface portion Mb are sealed by the front and rear, left and right peripheral edge portions M1 to M4. As shown in FIG. 2A, the upper surface portion Ma is provided with an opening K near the front. The unsealing part K is provided with a chopping tape, i.e., a peel cord T, extending to the left and right. The upper surface portion Ma includes a chuck c that closes the opened opening portion K so as to be freely opened and closed. That is, this bag is a bag with a chuck having a substantially rectangular shape in plan view.
The chuck c is provided on the lower surface of the upper surface portion Ma and extends to the left and right. Specifically, the chuck c is a long piece having the same length as the width between the left and right side portions M1 and M2. And extends left and right along the opening K. The chuck c closes the upper surface portion Ma opened by opening the opening portion K so as to be freely opened and closed.
In FIG. 1A, a belt-like sheet m (m1, m2) for collecting the bag M in the present invention is shown by a one-dot chain line, and a conventional belt-like belt described in the background art is shown by a two-dot chain line. Indicates a sheet. In FIG. 1A, the solid line arrow indicates the feeding direction of the belt-like sheet in the present invention, and the broken line arrow indicates the feeding direction of the belt-like sheet being manufactured as described in the background art section. . As shown in FIG. 1A, manufacturing of a conventional bag body in which side portions m′3 and m′4 of the belt-like sheet being fed become front and rear ends of the bag body M and a chuck is attached along the feeding direction. In contrast, in the present invention, the side portions m3 and m4 of the belt-like sheet being fed become the left and right side portions M1 and M2 of the bag body M, and the chuck c intersects the feeding direction of the belt-like sheet in the manufacturing process of the bag body. It is provided in the direction. Point seals are made on both or one of the left and right side portions M1, M2 of the sheet to ensure sealing near the end of the chuck c, if necessary.
As shown to FIG. 2 (B), the tearing tape T is pulled up and the upper surface part Ma is opened. After opening, as shown in FIG. 2 (C), the chuck c can be opened, and the object to be stored can be taken into and out of the bag. As the peel cord T, a conventionally known resin is used. In this embodiment, the peel cord T is temporarily fixed to the chuck c before being attached to the sheet.
As shown in FIG. 1 (D), the sheet (left side M1) is surrounded by one end of the peel cord T by punching (peel punch) so that the end portion of the peel cord T can be easily picked when torn into pieces. Further, a tab Ta for punching the end portion of the tape is punched out. N in FIG. 1D indicates an expanded seal portion in which the seal portion is expanded for reinforcement against the formation of the tab Ta.

(Configuration of chuck)
As shown in FIGS. 1B and 1C, the chuck c includes a locking part c1 and a locked part c2 formed separately from the locking part c1. 1B shows a state where the locking part c1 and the locked part c2 are separated, and FIG. 1C shows a state where the locking part c1 is locked to the locked part c2. Each of the locking part c1 and the locked part c2 includes a substrate c3 whose back surface is fused to the sheet, and either the locking part c1 or the locked part c2 includes a substrate c3. A male part c4 projecting to the surface side of the substrate c3 and a female part c5 projecting to the surface side of the substrate c3 are provided on either side. In FIGS. 1B and 1C, c30 indicates the back surface of the substrate c3.
By forcibly fitting the male part c4 to the female part c5, the locking part c1 and the locked part c2 are locked. In this embodiment, the locking part c1 includes a male part c4, the locked part c2 includes a female part c5, and both male and female parts c4 and c5 are formed in a channel shape having a substantially C-shaped cross section, It is integrated with the substrate c3. With the forced fitting, the C-shape exhibited by the male part c4 is inserted inside the C-character exhibited by the female part c5.
As shown in FIGS. 1B and 1C, the substrate c3 of the locked portion c2 is extended to the front, that is, to the downstream side of the moving path of the belt-like sheet described later, and wider than the substrate of the locking portion. A peel cord T for opening the opening portion is temporarily fixed along the longitudinal direction of the chuck c on the surface side of the extended portion c6. In the chuck c in which the locking portion c1 is locked to the locked portion c2, the extending portion c6 of the substrate c3 of the locked portion c2 extends forward from the substrate c3 of the locking portion c1. The temporary fixing of the peel cord T is to fix the peel cord T to the extending portion c6 to the extent that the extended portion c6 of the chuck c can be easily separated without being damaged.

(Configuration of manufacturing equipment)
Next, an apparatus according to the present invention will be described.
The invention of the present application includes not only what completes a bag as a final product but also what performs only an intermediate process mainly for attaching a chuck to a sheet before completion of the bag.
In the manufacturing process of the bag body with a chuck, the apparatus according to this embodiment performs the process of attaching the chuck to the belt-like sheet and sealing the left and right sides of the bag body, After the right and left seals, a belt-like sheet is wound up, and the process of accommodating the packaged object, fusing the front and rear parts, and separating the sheet into a plurality of bags is performed by a separate device.
For convenience of explaining the relative arrangement of the respective parts, one of the two strip-shaped resin sheets m1 and m2 is arranged substantially horizontally as the upper sheet m1 and the other one is set as the lower sheet m2 of the upper sheet m1. As to be disposed substantially horizontally downward, the downstream side of the sheet to be sent is defined as the front side, and the upstream side is defined as the rear side. That is, in the figure, for convenience of explanation, U is upward, S is downward, F is forward (downstream side of the sheet to be sent), B is backward (upstream side of the sheet to be sent), and L is left side. , R respectively indicates the right side. Such a direction is not absolute, and for example, it is not excluded to define front, rear, left, and right with any direction other than the upper direction shown here as an upper direction. The upper and lower sides of the belt-like sheet correspond to the upper and lower sides of the upper surface portion Ma and the lower surface portion Mb of the target bag body.

As shown in FIG. 3, the apparatus includes a sheet supply unit a1, a sheet feeding unit, a chuck placement unit 2, a chuck fusion unit 3, a chuck cutting unit 4 (FIG. 6), a point seal unit a3, A peel punch portion a4, a side seal portion a5, and a sheet winding portion a6 are provided.
The chuck fusion part 3 includes a locking fusion part 3a and a locked part fusion part 3b.
Hereinafter, the configuration of each part of the apparatus will be described in order.

(Sheet supply part a1)
The sheet supply unit a1 is configured such that the upper and lower sheets of a plurality of bags can be sampled, and two sheets of equal width, that is, the upper and lower sheets m1 and m2, are combined with each other. The sheet is moved in the longitudinal direction.
This will be specifically described. The sheet supply unit a1 includes an upper sheet holding unit a11 and a lower sheet holding unit a12. The upper sheet holding part a11 is a well-known means for holding a web around which the upper sheet m1 which is one of the belt-like sheets is wound so as to be rotatable in the sheet drawing direction. The lower sheet holding part a12 is a well-known device that holds a web around which the lower sheet m2, which is the other one of the belt-like sheets, is wound so as to be rotatable in the sheet drawing direction. Each sheet holding unit may be implemented using a known device.

(Sheet feeding section)
The sheet feeding unit includes an alignment guide unit 10 and a feeding guide unit 11.
The alignment guide means 10 guides the drawing of the upper sheet m1 held by the upper sheet holding part a11 of the sheet supply part a1 and the lower sheet m2 held by the lower sheet holding part a12 of the sheet supply part a1. This is a well-known device in which the upper and lower sheets m1 and m2 are in a state of being vertically aligned. The pulling guide means 10 can be implemented by one or a plurality of guide rollers that abut against at least one of the upper and lower sheets m1 and m2, or at least one of the upper and lower sheets m1 and m2.
The feed guide means 11 guides the belt-like upper and lower sheets m1 and m2 drawn from the upper and lower sheet holding portions toward the downstream sheet winding portion a5, and is constituted by a plurality of rollers. Can do.

The roller group constituting the feed guide means 11 is shown in FIG.
The feed guide means 11 has first driving rollers 12, 13 in order from the upstream side (right side in FIG. 3) to the downstream side (left side in FIG. 3) of the belt-like upper and lower sheets m1 and m2. A pair of branch rollers 14 and 14, a guide roller 15, a pair of second drive rollers 16a and 17a, a pair of third drive rollers 16b and 17b, and a pair of fourth drive rollers 16c and 17c.
At least one of the pair of upper and lower driving rollers is a driving roller that rotates by obtaining power from driving means (not shown) such as a motor. The belt-like upper and lower sheets m1 and m2 facing each other at the drawing guide means 10 are sandwiched between the first driving rollers 12 and 13 that are in contact with each other and sent to the downstream side.
The branching roller 14 is interposed between the upper and lower sheets m1 and m2, and pulls up and down the upper and lower sheets m1 and m2 which are fed out by the first driving rollers 12 and 13 to separate the m1 between the two sheets. , M2 is opened, and a space for chuck attachment by a chuck placement portion 2 to a chuck fusion portion 3 (an engagement portion fusion portion 3a and a locked portion fusion portion 3b) to be described later is secured. In this embodiment, the branching roller 14 pulls the lower sheet m2 downward from the upper sheet m1.

The guide roller 15 contacts the lower sheet m2 separated from the upper sheet m1 and guides the lower sheet m2 to the downstream side while bringing the lower sheet m2 closer to the upper sheet m1.
At least one of the pair of upper and lower second driving rollers 16a, 17a is rotated by obtaining power from a driving means (not shown) such as a motor as the driving roller. The second driving rollers 16a and 17a sandwich the upper and lower sheets m1 and m2, which have been separated from each other in the vertical direction, and send them out downstream.
Although not shown, the controller of the apparatus causes the driving rollers of the first to fourth driving rollers to be fused from the arrangement of the chuck to the upper sheet, which will be described later, to the upper sheet m1 of the locking portion c1. Until the cutting of the rear chuck is completed, the rotation of the locked portion c2 is stopped during the fusion to the upper sheet m1, during the point seal, and during the peel punch, and the sheet feeding is stopped. When the operation (automatic) is completed, the driving roller resumes rotation and feeds the sheet again. For the placement of the chuck on the upper sheet and the chuck cutting, each apparatus can be provided with a position sensor to detect the start and end positions of the operation and control the stop / restart of the roller. Also, the position can be detected by printing a mark on a belt-like sheet and detecting the mark with an optical sensor. 3 indicates a mark sensor which is the optical sensor. The mark sensor a2 detects the completion of the chuck fusion and sets the timing of the next peel punt operation (starts counting the time until the operation).
During the stop from the placement of the chuck on the upper sheet to the end of cutting of the chuck after the fixing portion c1 is fused to the upper sheet m1, the preceding portion of the sheet, that is, the downstream portion is fused to the locked portion. It is stopped at the portion 3b, and the locked portion c2 is fused to the upper sheet m1, and at this time, the further preceding portion of the sheet, that is, the further downstream portion is stopped at the point seal portion. A point seal is applied, and the further preceding portion of the sheet, that is, the further downstream portion is stopped at the peel punch portion, and the peel punch is applied. As described above, the sheet feeding unit intermittently feeds the sheet, and each operation is performed at the timing of stopping the sheet.

(Chuck placement part 2)
As shown in FIG. 6, the chuck placement unit 2 is placed in a section where the lower sheet m2 is separated from the upper sheet m1 by the branching rollers 14 and 14 in the feeding direction of the upper sheet m1, that is, the moving direction of the upper sheet m1. Is done.
The chuck placement unit 2 includes a chuck supply unit (not shown) and a chuck moving unit 21.
Although not shown in the drawings, the chuck supply unit is fed in the front-rear direction in the plan view in the direction of movement of the upper sheet m1 and the lower sheet m2 (the longitudinal direction of the belt-like upper and lower sheets m1 and m2). It is located on the right or left side of the upper and lower seats m1, m2. In this embodiment, for the upper and lower sheets m1 and m2 sent from the rear B side to the front F side, the chuck placement unit 2 includes the chuck supply unit and the right side of the upper and lower sheets m1 and m2. R is arranged. However, the chuck placement portion 2 can be implemented as being placed on the left side L of the upper and lower sheets m1 and m2.
The chuck supply unit winds and holds a long chuck c capable of collecting the chucks c for a plurality of bags in a web shape, and locks the locking portion c1 and the locking portion c2. This is a well-known device that is supplied in a state of being prepared.
The chuck moving unit 21 pulls out the chuck c from the chuck supply unit and arranges the chuck on the sheet.

More specifically, the chuck moving unit 21 includes a shuttle unit 22, a guide unit 27, and a drive unit.
The shuttle unit 22 is provided with a first sandwiching body 23 and a second sandwiching body 24 each having at least a surface made of titanium.
In this embodiment, the guide part 27 is a rail for guiding the movement of the shuttle part 22, and the drive part (not shown) includes a motor attached to the shuttle part 22 and a caster driven by the motor. (Wheel). However, the chuck moving unit may move the shuttle unit 22 by a known actuator using fluid pressure such as hydraulic pressure, or may move the shuttle unit 22 by other known moving means. Also good.
Both the first and second sandwiching bodies 23 and 24 are long plate-like bodies that extend in their own moving directions. The first and second sandwiching bodies 23 and 24 are arranged in parallel with a gap G between them, and the shuttle unit 22 is moved by the driving of the driving unit, so that the first and second The front ends of the two sandwiching bodies 23 and 24 are made to run along the back surface of the upper sheet m1 between the upper and lower sheets m1 and m2.

More specifically, the rail constituting the guide portion 27 is, in plan view, from either the left or right of the upper and lower seats m1 and m2, a direction intersecting the moving direction of the upper seat m1, more specifically, the upper side. It extends at right angles to the moving direction of the sheet m1.
The drive unit moves the shuttle unit 22 along the rails of the guide unit 27, thereby moving the sheet from the left or right separated position (right side R in FIG. 6) of the sheet on which the chuck supply unit is disposed. The shuttle portion 22 is moved toward the side (left L in FIG. 6) in a direction crossing and orthogonal to the moving direction of the sheet, and the first and first sheets are positioned between the upper and lower sheets m1 and m2 and to the lower surface of the upper sheet m1. The two sandwiching bodies 24 and 25 are arranged so as to cross the top sheet m1. In this embodiment, the drive unit moves the shuttle unit 22 in a direction orthogonal to the moving direction of the sheet to perform the above-described arrangement of the chuck c on the lower surface of the upper sheet m1.
However, the rail may extend in a direction that intersects the moving direction of the seat, and does not actually need to intersect with the upper seat m1. On the contrary, it is preferable to dispose the front end side of the rail so as not to enter into the movement path of the sheet, that is, not to cross, so as not to hinder the movement of the sheet.
The shuttle unit 22 can only move from the base end side of the rail, that is, the chuck supply unit side, to the tip end position of the rail. However, the long first and second sandwiching bodies 23 and 24 are further separated from the shuttle unit 22. When extending to the upper seat m1 side and the shuttle portion 22 is on the front end side of the rail, the length that can actually be arranged across the entire width of the upper seat m1 crossing the seat m1 and toward the lower surface of the upper seat m1, It protrudes from the shuttle portion 22 toward the upper seat m1.
In FIG. 6, the first and second holding bodies 23 and 24 are retracted from the lower surface of the upper sheet m1 to the chuck supply unit before holding the chuck, and the whole is moved from the upper and lower sheets m1 and m2. The exposed state is shown.

As shown in FIGS. 5A and 5B, the first and second sandwiching bodies 23 and 24 include pressing bodies 25 and 26 that press the chuck c, respectively. Hereinafter, the pressing body 25 included in the first clamping body 23 is referred to as a first pressing body 25 and the pressing body 26 included in the second clamping body 24 is referred to as a second pressing body 26 as necessary.
Both the first and second pressing bodies 25 and 26 are linear spring materials having elasticity. The first pressing body 25 has a distal end side as a free end and a proximal end side fixed to the first holding body 23, and extends from the fixed first holding body 23 toward the second holding body 24 in a plan view. The base end side is fixed obliquely with respect to the moving direction of the chuck c, that is, the extending direction of the long holding members 23 and 24 so as to be closer to the chuck supply side than the front end side. The second pressing body 26 has a distal end side as a free end and a proximal end side fixed to the second holding body 24, and extends from the fixed second holding body 24 toward the first holding body 23 in a plan view. The base end side is fixed obliquely with respect to the moving direction of the chuck c, that is, the extending direction of the long holding members 23 and 24 so as to be closer to the chuck supply side than the front end side. In other words, each of the first and second pressing bodies 25, 26 is attached obliquely so that the distal end side is closer to the upper sheet m1 side than the proximal end side.
Moreover, the 1st press body 27 and the 2nd press body 26 are arrange | positioned in a mutually different position about the moving direction of a chuck | zipper.
In this embodiment, a screw hole (not shown) provided on the upper surface of the shuttle portion 22 and a hole (not shown) penetrating the first and second sandwiching bodies 23 and 24 vertically. A known fixing tool a ... a such as a screw or a bolt is passed, and both sandwiching bodies 23, 24 are fixed to the upper surface of the shuttle portion 22 in a state of being arranged in parallel to each other. The bases of the pressing bodies 25 and 26 are fixed to the upper surfaces of the first and second holding bodies 23 and 24 by the fixing tools a and a. Specifically, the base side of the linear pressing bodies 25 is sandwiched between the seating surface of the fixture a and the upper surfaces of the first and second clamping bodies. However, the fixing of the pressing bodies 25, 26 to the first and second holding bodies 23, 24 depends on a fixture that also serves to fix the first and second holding bodies 23, 24 to the shuttle portion 22. Alternatively, it may be performed using a separate fixing means.
As described above, by fixing with the fasteners a, a on the upper surface of the shuttle portion 22, the pressing bodies 25, 26 are such that the leading ends of the first and second sandwiching bodies 23, 24 are located on the upper sheet m1. In the state of being disposed on the lower surface, the sheet is disposed on the upper surfaces of the first and second sandwiching bodies 23 and 24 so as to be positioned closer to the chuck supply unit than the sheet on the transfer path.

The first and second sandwiching bodies 23 and 24 and the pressing bodies 25 and 26 will be described in more detail.
As described above, the linear pressing bodies 25 and 26 are sandwiched between the seating surfaces of the fixtures a and a and the upper surfaces of the sandwiching bodies, so that the upper surfaces of the first and second sandwiching bodies 23 and 24 are placed on the upper surfaces. The front ends of the pressing bodies 25 and 26 are positioned on the gap G between the first and second sandwiching bodies in a state where the chucks c are not held.
A gap G between the first and second sandwiching bodies 23 and 24 shown in FIG. 5B is a width w1 of each of the substrates c3 and c3 provided in the locking portion c1 and the locked portion c2 of the chuck c. W2 (FIG. 1 (B)) is smaller and one of the locking portion c1 and the locked portion c2 is in the fitted state of the female portion c5 provided in the locked portion c2 in this embodiment. Is substantially the same as or slightly larger than the lateral width w3 (FIG. 1C).
Further, a groove b extending along the longitudinal direction of the first and second holding bodies 23 and 24 is provided on the upper surface of the shuttle portion 22 below the gap G between the first and second holding bodies 23 and 24. ing. The lateral width of the groove b is larger than the lateral widths w1 and w2 of the upper substrate of the chuck c, and smaller than the total width of the first sandwiching body 23 and the second sandwiching body 24 including the gap G.
The front and rear ends of the groove b reach the front and rear surfaces of the shuttle unit 22. That is, the groove b is opened before and after the shuttle portion 22.
As shown in FIG. 6, the first and second sandwiching bodies 23, 24 arranged side by side are provided with a portion whose tip side is tapered like a sword in plan view.

The chuck c is in a state in which the locking portion c1 and the locked portion c2 are locked (FIG. 1C), and as shown in FIGS. It is inserted between the holding bodies 24 and 25. Specifically, the male and female fitting portions of the chuck c in the locked state, that is, the male portion c4 and the female portion c5 in the fitted state are the rear end sides of the first and second holding bodies 23 and 24 (right side in FIG. 6). From R), it is inserted into the gap G between the sandwiching bodies 23, 24. At this time, the substrate c3 of the locking portion c1 is positioned on the upper surface side of the first and second holding bodies 23 and 24. Further, the substrate c3 of the locked portion c2 is located on the lower surface side of the first and second sandwiching bodies 23 and 24 and is housed in the groove b.
By inserting the male and female fitting portions of the chuck c in the locked state into the gap G, the distal ends of the pressing bodies 25 and 26 are the male and female fitting portions of the chuck c, particularly the male portion c4 in this embodiment. Is pressed back to the base end side of the pressing bodies 25 and 26, and the pressing bodies 25 and 26 are elastically bent, respectively, and the base end sides of the first and second holding bodies 23 and 24, that is, chucks. The chuck c is held so that it cannot be returned to the supply unit side.
In this embodiment, the locking part c1 includes the male part c4, the locked part c2 includes the female part c5, and the pressing part presses the base of the male part c4. In addition, the locked portion c2 includes the male portion c4, the locking portion c1 includes the female portion c5, and the pressing portion presses the base portion of the female portion c5.
In the vertical direction, the position of the lower surface of the upper sheet m1 between the branching rollers 14 and 14 and the guide roller 15 and the first and second sandwiching bodies 23 and 24 in a state where the shuttle unit 22 is placed on the rail. The position of the rail extends substantially horizontally from the chuck supply unit side to the seat side to guide the horizontal movement of the shuttle unit 22, so that both the sandwiching bodies 23 and 24 are moved to the lower surface of the upper sheet m <b> 1. invite.
The long first and second sandwiching bodies 23, 24 extend substantially horizontally from the shuttle portion 22 toward the upper sheet m1 at least by the lateral width of the upper sheet m1, so that they do not become unstable. In the vicinity of the upper seat m1 (right side), as shown in FIG. 6, the sub guide portion 28 is provided with a through portion 29 through which the front ends of the first and second holding bodies 23 and 24 pass, and the sub guide portion 28 is on the rail front side. Is provided. In FIG. 6, in order to show the shape of the front-end | tip of the 1st and 2nd clamping bodies 23 and 24, the subguide part 28 is represented in the state seen through with the dashed-dotted line.

(Locking part fusion part 3a)
As shown in FIG. 4, the locking portion fusion portion 3a included in the chuck fusion portion 3 is disposed at a position along the upper sheet m1 in the chuck arrangement portion 2 in the movement path of the upper sheet m1. Is done.
The locking part fusion part 3a includes a first fusion part 31 disposed above the upper sheet m1, a first receiving part 32 disposed below the upper sheet m1, and a first vertical drive part (not shown). Z.).
The first fusion part 31 and the first receiving part 32 are operated by the first vertical driving part arranged at the same position in the feeding direction of the upper sheet m1. Can approach and separate with the upper sheet in between. As the first fusion part 31, one having a known fusion means such as a heat generating device or an ultrasonic generator is adopted. The first receiving portion 32 receives the adjacent first fusion portion 31 and the first fusion portion 31 between the substrate c3 of the locking portion c1, the first and second sandwiching bodies 23 and 24, and the covered portion. The portion behind the extended portion of the substrate c3 of the locking portion c2 is sandwiched, and no fusion means is provided.
The width of the first fused portion 31 and the first receiving portion 32 in the sheet feeding direction is substantially the same as or slightly larger than the width of the locking portion c1 in the substrate, that is, the width in the sheet feeding direction.
The width of the first fused portion 31 and the first receiving portion 32 in the direction orthogonal to the sheet feeding direction is the same as or larger than the left and right widths of the upper sheet m1.

(Chuck cutting part 4)
The chuck cutting unit 4 (FIG. 6) is positioned between the front ends of the first and second sandwiching bodies 23 and 24 in a state of being retracted toward the chuck supply unit and the sheet in plan view. The chuck cutting unit 4 has a blade capable of cutting the chuck c. That is, the chuck cutting unit 4 includes a cutting blade that moves for cutting and a fixed receiving blade, but only the cutting blade is shown in FIG. 6 (and FIG. 8 described later) in order to avoid complication of the drawing.

(Locked portion fused portion 3b)
As shown in FIG. 4, the locked portion fusion portion 3b provided in the chuck fusion portion 3 is disposed on the downstream side of the engagement portion fusion portion 3a in the movement path of the upper sheet m1. In this embodiment, the locked portion fusion portion 3b is disposed about 50 cm from the locking portion fusion portion 3a and on the downstream side of the movement path of the upper sheet m1.
The locked portion fused portion 3b includes a second fused portion 33 disposed above the upper sheet m1, a second receiving portion 34 disposed below the upper sheet m1, and a second vertical driving portion (see FIG. Not shown.).
The second fusion part 33 and the second receiving part 34 are operated by the second vertical driving part disposed at the same position in the feeding direction of the upper sheet m1. Can approach and separate with the upper sheet in between. As the second fusion part 33, one having a known fusion means such as a heat generating device or an ultrasonic generator is adopted. The second receiving portion 33 receives the adjacent second fusion portion 33 and sandwiches the extended portion c6 of the substrate c3 of the locked portion c2 between the second fusion portion 31 and the fusion means. Not equipped.
The width in the sheet feeding direction of the second fusion part 33 and the second receiving part 34 is substantially the same as or slightly larger than the width in the sheet feeding direction of the extension part c6 of the substrate c3 of the locked part c2.
The width of the second fusion part 33 and the second receiving part 34 in the direction orthogonal to the sheet feeding direction is the same as or larger than the left and right widths of the upper sheet m1.
The second fusion part 33 also serves as a peel cord fusion part. At the same time as the extension part c6 is fused to the lower surface of the upper sheet m1, the peel cord T temporarily fixed to the surface of the extension part c6 is attached to the upper sheet. It is fused to the lower surface of m1.

(Point seal part a3)
The point seal portion a3 is a known device that applies the above-described point seal to the sheet, and further seals the vicinity of both ends of the chuck c from the upper and lower sides of the upper and lower sheets m1 and m2. The point seal part a3 is provided on the downstream side of the chuck fusion part. If the point seal is unnecessary, the point seal portion a3 can be provided without providing it. Moreover, it is good also as what performs a point seal not with the apparatus which concerns on this invention but with another apparatus.

(Peel punch part a4)
The peel punch portion a4 is a well-known device that applies the above-described punch to the vicinity of one end of the peel cord T on the sheet. In this embodiment, it is arrange | positioned in the downstream of the point seal | sticker part a3. However, the present invention is not limited to this position, and the peel punch may be performed by another device instead of the device according to the present invention.

(Side seal part a5)
The side seal part a5 is provided in the middle of the movement path of the upper and lower sheets m1 and m2 which are attached with the chuck c and passed between the second driving rollers 16a and 17a and stacked. The side seal part a5 is heat-sealed at the position so as to form the left and right side parts m3 and m4 of the bag. The side seal part a4 can be implemented using a known device.
In this embodiment, the side seal part a5 includes a left and right fusion part a51 that performs sealing, and a cooling part a52.

(Sheet winding part a6)
The sheet winding unit a6 is a device that winds the belt-like upper and lower sheets m1 and m2 after the right and left side seals are applied at the side seal portion a5, and uses a known device. Can be implemented.

(Production method)
Next, the flow of the manufacturing method of the bag body with a chuck | zipper of this invention using this apparatus is demonstrated.
As shown in FIG. 7, the manufacturing method of the bag body with a chuck includes a sheet supply step k1, a chuck placement step k2, a locking portion fusion step k3, a chuck preparation step k4, and a chuck cutting step k5. The engaged portion fusion process k6, the point seal process k7, the peel punch process k8, the side seal process k9, and the sheet winding process k10 are performed.

(Sheet supply process k1)
In the sheet supply step k1, the belt-like upper and lower sheets m1 and m2 are pulled out from the sheet supply unit by driving the drive roller of the sheet feeding unit.
The upper and lower sheets m1 and m2 drawn out are sent toward the downstream winding unit.

(Chuck placement step k2)
The chuck arranging step k2 is a step of arranging the chuck c on the lower surface of the upper sheet m1 sent toward the downstream by the chuck arranging unit 2.
In this step, the chuck c is sandwiched in the gap G between the first and second sandwiching bodies 23 and 24 shown in FIG. 6 as shown in FIGS. 5A and 5B, and pulled out from the chuck supply unit. go.
That is, the chuck placement unit 2 sandwiches the base part of the male part c4 of the chuck c in the locked state between the first and second holding bodies 23 and 24, and moves the shuttle part 22 by the driving part. Then, both the sandwiching bodies 23 and 24 are moved from the chuck supply unit side toward the lower surface of the upper sheet m1 in a direction crossing the moving direction of the upper sheet m1. By this movement, as shown in FIG. 8A, the chuck c is disposed on the lower surface of the upper sheet m1 so as to cross the upper sheet m1 between the upper and lower sheets m1 and m2.
When the first and second holding members 23 and 24 dispose the chuck c as shown in FIG. 8A, the sheet feeding unit stops the driving roller as described above.
When the chuck c is arranged on the sheet, the first and second pressing bodies 25 and 26 are bent to press the base of the male part c4 of the chuck c as shown in FIG. The chuck is prevented from returning to the chuck supply unit side with respect to the first and second holding bodies moving toward the upper side, and the chuck c is moved to the upper sheet side with respect to the first and second holding bodies 23 and 24. Allow movement.

(Locking part fusion process k3)
When the chuck c is fed to the lower surface of the upper sheet m1 by the chuck placement portion 2 between the upper and lower fusion portions 31 and 32 of the chuck fusion portion 3, the processing shifts to the locking portion fusion step k3. Specifically, the position of the chuck c of the first and second clamping bodies 23 and 24 of the chuck placement unit 2 or the shuttle unit 22 is detected by a sensor (not shown) such as a position sensor. By detecting the completion of the movement of the first and second sandwiching bodies 23, 24 between the sheets, the process shifts to the locking portion fusion step k3. In the locking part fusion process k3, the first fusion part 31 is moved closer to the first receiving part 32 by the first vertical drive part, and the first fusion part 31 separated from the upper sheet m1 is moved upward. While pressing against the surface (upper surface) of the upper sheet m1, it is pressed against the substrate c3 back surface c30 of the locking portion c1 disposed above both the first and second sandwiching bodies 23, 24.
As described above, by bringing the first fusion part 31 close to the first receiving part 33, from above, the upper sheet m1, the substrate c3 of the locking part c1, the first and second sandwiching bodies 23 and 24, and The portion behind the extended portion c6 of the substrate c3 of the locked portion c2 is sandwiched between the first receiving portion 32, and the back surface c30 of the substrate c3 of the locking portion c1 is fused to the lower surface of the upper sheet m1. To do. That is, the surfaces indicated by the solid arrows in FIG. 4 are integrated by fusion. During the fusion, both the first and second sandwiching bodies 23 and 24 function as a separator that prevents the substrates c3 and c3 from sticking to each other between the upper and lower substrates c3 and c3 of the chuck c.

(Chuck preparation process k4)
The chuck preparation step k4 is a step in which the chuck c to be fused to the sheet next is disposed in the gap G between the first and second sandwiching bodies 23 and 24.
This process will be described in detail.
As shown in FIGS. 4 and 8B, the heating portions 34, 34 of the upper and lower first and second fused portions 31, 32 are respectively connected to the back surfaces c30, c30 of the substrates c3, c3 of the chuck c. Although it contacts, it does not contact directly with the 1st and 2nd clamping bodies 23 and 24. FIG.
On the other hand, as described above, the first and second pressing bodies 25 and 26 of the first and second sandwiching bodies 23 and 24 prevent the chuck c from returning to the chuck supply unit side and sandwich both the sandwiching bodies 23 and 24. The movement of the chuck c toward the upper sheet m1 with respect to the bodies 23 and 24 is allowed. As a result of the action of the first and second pressing bodies 25 and 26, as shown in FIG. 8C, the shuttle unit 22 is retreated to the chuck supply unit side by the drive unit, thereby being fused to the upper sheet m1. Only the first and second sandwiching bodies 23, 24 can be smoothly retracted while leaving the chuck c.
As the first and second sandwiching bodies 23, 24 are retreated, the portion to be fused next enters the gap G between the first and second sandwiching bodies 23, 24 sequentially. . That is, both the first and second sandwiching bodies 23 and 24 automatically receive the subsequent chuck attached to the sheet next by the retreat from the proximal end side into the gap G of both sandwiching bodies. . In this way, the next chuck c is arranged between the first and second holding bodies 23 and 24.
As described above, when the first and second sandwiching bodies 23 and 24 are formed of titanium, the surface slips well, the peelability from the chuck c is good, and the above-described retreat can be performed more smoothly.

(Chuck cutting process k5)
After both the first and second sandwiching bodies 23 and 24 have come out of the first fusion part 31 and the first receiving part 32 and completely moved back to the chuck supply part side, in this chuck cutting step k5, FIG. As shown in (D), the chuck cutting unit 4 swings the cutting blade down to the chuck c1, and then separates the chuck c fused to the upper sheet m1 from the subsequent chuck c to be fused. The operation timing of the chuck cutting unit 4 may be determined by detecting the position of the first and second holding bodies 23 and 24 or the shuttle unit 22 with a sensor such as a position sensor.
After the chuck cutting step k5, the first fusing unit 31 and the first receiving unit 32 are separated from each other by the first vertical driving unit and returned to the original position. The driving roller of the sheet feeding unit starts rotating again and feeds the sheet to the downstream side.

(Locked portion fusion process k6)
After the chuck cutting step k5, the sheet is moved downstream from the locking portion fusion portion 3a by the sheet feeding portion, and reaches the position where the locked portion fusion portion 3b is disposed. In FIG. 4, the locking portion fused portion 3 a and the locked fusion portion 3 b are drawn so as to be adjacent to each other, but in practice, the locked fusion portion 3 b is locked as described above. It is provided at a position about 50 cm away from the part fusion part 3a to the downstream side of the upper sheet m1.
As shown in FIG. 4, the extended portion c <b> 6 of the substrate c <b> 3 of the locked portion c <b> 2 of the chuck c is provided between the second fused portion 33 and the second receiving portion 34 provided in the locked portion fused portion 3 b. , The second fusion part 33 is brought close to the second receiving part 34, so that the upper sheet m1 and the extension part c6 of the substrate c3 of the locked part c2 are connected to the second from above. It is sandwiched between the fusion part 33 and the second receiving part 34, and the surface of the substrate c3 of the locked part c2 and the peel cord T are fused to the lower surface of the upper sheet m1.
In this step k6, as shown in FIG. 4, in the upper sheet m1, the peel cord T temporarily fixed to the surface of the extended part c6 of the locked part c2 by the second fusion part 33 is replaced with the upper sheet m1. Fused to the lower surface of That is, the surfaces indicated by the broken-line arrows in FIG. 4 are fused and integrated.
In addition, the rear part of the peel cord T indicated by a white triangle in FIG. 4 is not sealed. By not sealing the rear part of the peel cord T, the upper sheet m1 can be opened smoothly.

(Point seal process k7)
After the locked portion fusion process k6, the upper and lower sheets m1 and m2 move further downstream at the sheet feeding section, and at the point seal section a3, the sheet chuck c is moved by the point seal process k7. Point seals are made near the left and right ends.

(Peel punching process k8)
After the point sealing step k7, the upper and lower sheets m1 and m2 move further downstream at the sheet feeding portion. In the peel punching step k8, the sheet is near one end of the stripping tape T by the peel punch portion a4. Is punched.

(Side seal process k9)
After the peel punch step k8, the sheet moves further downstream in the sheet feeding portion, and in the left and right fused portions a51 of the side seal portion a5 that has reached, the portions that become the left and right side portions of the bag body by the front and rear seal portions described above. Heated and sealed. Then, the formed side seal is cooled in the subsequent cooling part a52.

(Sheet winding process k10)
In the sheet feeding portion, the upper and lower sheets m1 and m2 are further fed further downstream from the front and rear seal portions, and are wound in the state of a belt-like sheet by the above-described sheet winding portion a6.
In this embodiment, as described above, after storing the object to be stored between the front and rear seals, the left and right sides of the seat are sealed. As described above, the sheet is wound around the sheet winding unit, and the processing is completed.

In the manufacturing process of the bag body with a chuck, the apparatus according to this embodiment performs the attachment of the chuck to the belt-like sheet and the formation of the side seal, and winds the belt-like sheet after the chuck attachment and the right and left seals. In this apparatus, the process of accommodating the object to be accommodated, the process of sealing the front and rear portions, and the process of separating the sheet into a plurality of bags are performed by a separate device. The above-described filling means, sealing means before and after the bag, cutting means for cutting the belt-like sheet, etc. can be provided, and each process carried out elsewhere can also be carried out with this apparatus.

In the above, the opening part of the bag body is orthogonal to the longitudinal direction of the sheet, and the attachment direction of the chuck is orthogonal to the longitudinal direction of the sheet, but the chuck is attached along the portion that becomes the opening part of the bag body. If the opening portion is oblique to the longitudinal direction of the sheet, the chuck may be fed so as to be oblique to the longitudinal direction of the sheet in accordance with the opening.
In addition, although the target bag body does not include the “town” in the left and right side portions, the rear portion and the front portion which are the bottom, the bag body can be implemented as including the “town”.

DESCRIPTION OF SYMBOLS 1 Sheet feeding part 2 Chuck arrangement | positioning part 3 Chuck fusion | fusion part 4 Chuck cutting | disconnection part

Claims (4)

In the vicinity of the front part, the upper part and the lower part, and the left and right side parts, the front part, the bottom part, the bottom part, and the front part. In an apparatus for manufacturing a bag body with a chuck provided with an opening portion provided on the upper surface portion and extending left and right, and a chuck for closing the opening portion so as to be freely opened and closed,
A sheet feeding section that moves a belt-like sheet that can be collected from the upper surface of the bag body in the longitudinal direction of the belt-like sheet;
A chuck arrangement portion for bringing the chuck, which is separate from the belt-like sheet, along the lower surface of the belt-like sheet;
A chuck fusion part for fusing a chuck along the lower surface of the belt-like sheet to the lower surface of the belt-like sheet;
The left and right side portions of the belt-like sheet are the left and right side portions of the bag body to be formed,
The chuck placement unit includes a chuck supply unit positioned on the right or left side of the belt-like sheet with the moving direction of the belt-like sheet as a front-rear direction, and a chuck moving unit that moves the chuck received from the chuck supply unit to the lower surface of the belt-like sheet. And
The chuck moving unit includes a first sandwiching body, a second sandwiching body, and a driving unit. The chuck is sandwiched between the both sandwiching bodies, and the sandwiching body is sandwiched by the driving unit from the chuck supply unit side. The chuck is disposed on the lower surface of the belt-like sheet so as to cross the belt-like sheet by moving in the direction crossing the moving direction of the belt-like sheet.
The first and second sandwiching bodies each include a pressing body that presses the chuck,
The pressing body is a linear spring material having elasticity, the distal end side is a free end, the proximal end side is fixed to the sandwiching body, extends from one sandwiching body to the other sandwiching body, and the proximal end side is the distal end It is fixed obliquely with respect to the moving direction of the chuck so that it is closer to the chuck supply side than the side.
The pressing body of the first clamping body and the pressing body of the second clamping body are arranged at different positions with respect to the moving direction of the chuck,
Each pressing body abuts on the chuck on the tip side, and presses the chuck by bending due to elasticity, and suppresses the chuck from returning to the chuck supply unit side with respect to both the holding bodies moving toward the sheet. In addition, the chuck can be moved to the sheet side with respect to both sandwiched bodies, and after the chuck is fused to the belt-like sheet, the chuck can be left on the belt-like sheet, and both the sandwiched bodies can be moved to the chuck supply unit side. The manufacturing apparatus of the bag body with a chuck | zipper characterized by the above-mentioned. The chuck is composed of a locking part and a locked part formed separately from each other, and is fused to the belt-like sheet in a state where the locking part is locked to the locked part. The locking portion and the locked portion each include a substrate fused to the belt-like sheet, and one of the locking portion and the locked portion includes a female portion on the surface side of the substrate, and the locking portion And the other part of the locked part includes a male part that can be forcibly fitted to the female part, and the board of the locked part is directed toward the downstream side of the moving path of the belt-like sheet. It is provided with an extension part having a larger width than the extension part, and a peel cord for opening the opening part is temporarily fixed along the longitudinal direction of the chuck on the surface side of the extension part,
The chuck fusion part includes a first fusion part disposed above the belt-like sheet in the belt-like sheet movement path, a first receiving part arranged below the first fusion part with the belt-like sheet interposed therebetween, A second fusion part disposed above the belt-like sheet on the downstream side of the belt-like sheet from the first fusion part, and a second receiving part arranged below the second fusion part with the belt-like sheet interposed therebetween. Provided, the first fused part and the first receiving part can be approached / separated with a belt-like sheet sandwiched therebetween, and the second fused part and the second receiving part can be approached / separated with a belt-like sheet sandwiched therebetween,
The chuck placement part includes a chuck cutting part,
The chuck supply unit supplies a long chuck,
The chuck moving part includes a shuttle part provided with the first and second clamping bodies.
Said drive part moves a shuttle part in the direction which crosses the movement direction of a sheet,
The first and second sandwiching bodies are each a long plate-like body that extends in the direction of movement of the shuttle portion and is longer than the lateral width of the belt-like sheet, and the both sandwiching bodies are arranged with a gap therebetween. The leading end side is coordinated to the lower surface of the belt-like sheet between the first fusion part and the first receiving part by driving the shuttle part by the driving part,
In a state where the leading end sides of both the first and second sandwiching bodies are coordinated to the lower surface of the belt-like sheet, the pressing body is moved to the upper surface of both the sandwiching bodies so as to be positioned closer to the chuck supply unit than the belt-like sheet. In the state that is provided along the upper surface and does not hold the chuck, the front end side of the pressing body extends over the gap between the sandwiching bodies,
The gap between the first and second sandwiching bodies is smaller than the width of each of the long substrates provided in the locking portion and the locked portion,
When the gap between the first and second holding bodies receives the male and female fitting portions of the chuck in the locked state, the first and second holding bodies lock the substrate of the locking portion above both the holding bodies. And the pressing body is in contact with the male or female part in the fitted state and bends and retreats from the gap between the two sandwiched bodies. Pressing the part or female part, and holding the long chuck along the gap between both sandwiched bodies,
The shuttle unit arranges the chucks held by the first and second clamping bodies between the first fusion part and the first receiving part by the movement of the first and second clamping bodies,
The first fusion part is in close proximity to the first receiving part, and from above, the belt-like sheet, the substrate of the locking part, the first and second sandwiching bodies, and the extended part of the substrate of the locked part The rear part is sandwiched between the first receiving part and the back surface of the locking part is fused to the lower surface of the belt-like sheet,
The shuttle unit is configured to retract the first and second sandwiching bodies to the chuck supply unit side while leaving the chuck fused to the belt-like sheet, and both sandwiching bodies are subsequent chucks that are attached to the sheet next by the receding. Is received from the base end side of both sandwiched bodies into the gap between both sandwiched bodies,
The chuck cutting part is for cutting the fused chuck from the subsequent chuck after the first and second sandwiching bodies are withdrawn from the belt-like sheet,
The sheet feeding unit stops the movement of the sheet while at least the chuck is welded along the lower surface of the belt-like sheet and is cut by the chuck cutting unit, and after the chuck is cut, the belt-like sheet is moved and the chuck is second-fused. Between the second portion and the second receiving portion,
The second fused portion is close to the second receiving portion, so that the belt-like sheet and the extended portion of the substrate of the locked portion are arranged between the second fused portion and the second receiving portion from above. The apparatus for manufacturing a bag body with a chuck according to claim 1, wherein the substrate surface of the locked portion and the peel cord are fused to the lower surface of the belt-like sheet. In the vicinity of the front part, the upper part and the lower part, and the left and right side parts, the front part, the bottom part, the bottom part, and the front part. In the manufacturing method of the bag body with a chuck provided with an opening portion provided on the upper surface portion and extending left and right, and a chuck that freely closes the opening portion,
A sheet feeding section that moves a belt-like sheet that can be collected from the upper surface of the bag body in the longitudinal direction of the belt-like sheet;
A chuck arrangement portion for bringing the chuck, which is separate from the belt-like sheet, along the lower surface of the belt-like sheet;
Using a chuck fusion part that fuses the chuck along the lower surface of the belt-like sheet to the lower surface of the belt-like sheet,
The left and right side portions of the belt-like sheet are the left and right side portions of the bag body to be formed,
The chuck placement unit includes a chuck supply unit located on the right or left side of the belt-like sheet with the moving direction of the belt-like sheet as a front-rear direction, and a chuck movement for moving the chuck received from the chuck supply unit to the lower surface of the belt-like sheet. Use the one with the part,
The chuck moving unit is provided with a first sandwiching body, a second sandwiching body, and a driving unit. The chuck is sandwiched between the both sandwiching bodies, and both the clamping units are supplied to the chuck by the driving unit. By moving in the direction crossing the moving direction of the belt-like sheet from the part side toward the belt-like sheet, the chuck is arranged on the lower surface of the belt-like sheet so as to cross the belt-like sheet,
For both the first and second sandwiching bodies, those equipped with pressing bodies for pressing the chucks are used.
A linear spring material having elasticity is used for the pressing body, the distal end side of the pressing body is a free end, the base end side is fixed to the sandwiching body, and the pressing body is directed from one sandwiching body to the other sandwiching body. It is assumed that the base end side is fixed obliquely with respect to the moving direction of the chuck so that the base end side is closer to the chuck supply side than the front end side.
The pressing body of the first clamping body and the pressing body of the second clamping body are arranged at different positions with respect to the moving direction of the chuck,
By pressing the chuck by bringing the pressing body into contact with the chuck on the leading end side and bending it by elasticity, the chuck returns to the chuck supply section side with respect to both the clamping bodies moving toward the sheet. After the chuck is fused to the belt-like sheet, the chuck is left on the belt-like sheet, and both the sandwiches are moved to the chuck supply unit side. The manufacturing method of the bag body with a chuck | zipper characterized by the above-mentioned. In the vicinity of the front part, the upper part and the lower part, and the left and right side parts, the front part, the bottom part, the bottom part, and the front part. In the manufacturing method of the bag body with a chuck provided with an opening portion provided on the upper surface portion and extending left and right, and a chuck that freely closes the opening portion,
The chuck is composed of a locking part and a locked part formed separately from each other, and is fused to the belt-like sheet in a state where the locking part is locked to the locked part. Each of the locking portion and the locked portion includes a substrate fused to the belt-like sheet, and one of the locking portion and the locked portion includes a female portion on the surface side of the substrate, The other one of the part and the locked part is provided with a male part that can be forcibly fitted to the female part, and the base of the locked part is the locking part toward the downstream side of the moving path of the belt-like sheet. It is provided with an extending part having a width larger than that of the substrate, and a peel cord for opening the opening part is temporarily fixed along the longitudinal direction of the chuck on the surface side of the extending part,
Using the sheet supply unit, the sheet feed unit, the chuck placement unit, the chuck fusion unit, the chuck cutting unit, the peel punch unit, the side seal unit, and the sheet winding unit, in sequence, the sheet supply process A chuck placement step, a locking portion fusion step, a chuck preparation step, a chuck cutting step, a locked portion fusion step, a peel punch step, a side seal step, and a sheet winding step. Are to be performed sequentially,
In the sheet supply step, one of the two belt-like sheets from which the upper surface portion and the lower surface portion of the plurality of bag bodies can be collected by the sheet feeding unit is an upper sheet for collecting the upper surface portion, and the other one is As the lower sheet from which the lower surface portion is collected, the upper and lower sheets are pulled out from the sheet supply unit on which the sheet is wound by the sheet feeding unit, and the upper and lower sheets face each other and run in parallel. In particular, the movement direction of the upper and lower sheets is made to coincide with the front and rear direction of the target bag body,
At the sheet feeding section, the upper and lower sheets are spaced from the upper sheet and the lower sheet until the completion of the locked portion fusion process and the upper sheet and the lower sheet. Move
In the chuck placement step, the upper sheet movement direction is the front-rear direction, the chuck supply unit located on the right or left side of the upper sheet, and the chuck movement unit that moves the chuck received from the chuck supply unit to the lower surface of the upper sheet Using a chuck arrangement portion comprising
The chuck moving part includes a first plate and a second pinch body that are long plate-like bodies longer than the lateral width of the upper sheet and are arranged with a gap therebetween, and the first and second pinch bodies, respectively. Using a pressing body provided on the upper surface of the head and a drive unit,
As the pressing body, a linear spring material having elasticity is used, the distal end side of the pressing body is a free end, and the proximal end side is fixed to the clamping body, and the pressing body is changed from one clamping body to the other clamping body. The pressing body of the first clamping body and the second clamping body are fixed obliquely with respect to the moving direction of the chuck so that the proximal end side of the pressing body is closer to the chuck supply side than the distal end side. Are arranged at different positions with respect to the movement direction of the chuck,
Between the first and second sandwiching bodies, the male and female mating portions of the chuck in the locked state are received, and the pressing body is bent by elasticity by bringing the tip side of each pressing body into contact with the chuck. Press the male part or female part in the fitted state of the chuck, and place the substrate of the locking part above the sandwiching bodies and the substrate of the latched part below the sandwiching bodies, respectively.
The drive unit moves the first and second sandwiching bodies in a direction intersecting the longitudinal direction of the upper sheet, and along the chuck so as to cross the upper sheet to the lower surface of the upper sheet,
The pressing of the chuck on the leading end side of the pressing body against the male part or female part of the chuck suppresses the chuck from returning to the chuck supply part side with respect to both sandwiched bodies moving toward the sheet, Allow movement to the sheet side with respect to both sandwiched bodies,
In the locking part fusing step, the chuck fusing part is arranged below the first fusing part with the first fusing part arranged above the upper sheet and the upper sheet in the upper sheet moving path. A first receiving portion, a second fusion portion disposed above the upper sheet on the downstream side of the upper sheet relative to the first fusion portion, and a lower portion of the second fusion portion with the upper sheet interposed therebetween. The first fused portion and the first receiving portion can be brought close to and separated from each other with the upper sheet sandwiched therebetween, and the second fused portion and the second receiving portion are brought close to each other with the upper sheet sandwiched therebetween.・ Use something that can be separated.
By bringing the first fusion part close to the first receiving part, from above, from the upper sheet, the board of the locking part, the first and second clamping bodies, and the extended part of the board of the locked part Sandwiching the rear part between the first receiving part and fusing the back surface of the locking part to the lower surface of the upper sheet;
In the chuck preparation step, the first and second sandwiching bodies are moved backward toward the chuck supply unit, leaving the chuck with the engaging portion fused to the lower surface of the upper sheet, and subsequently attached to the sheet by the backward movement. The chuck is received from the base end side of both sandwiched bodies into the gap between both sandwiched bodies,
In the chuck cutting step, after the first and second sandwiching bodies are withdrawn from the upper sheet by the chuck cutting unit, the chuck in which the locking portion is fused to the upper sheet is cut from the subsequent chuck,
In the locked portion fusion process, the sheet feeding portion moves the upper sheet between the second fusion portion and the second reception portion of the chuck fusion portion, and the second fusion portion is changed to the second reception portion. The upper sheet and the extended portion of the substrate of the locked portion are sandwiched between the second fused portion and the second receiving portion from above, and the substrate surface of the locked portion is The peel cord is fused to the lower surface of the upper sheet,
After fusing the locked portion to the upper sheet, the sheet feeding unit moves the upper sheet and the lower sheet in an overlapping manner,
In the peel punching process, for the upper and lower sheets that are overlapped, a punch is provided near one end of the peel cord to make it easier to grip and pull the peel cord,
In the side seal process, the side seal portion seals the portions to be the left and right side portions of the bag body, respectively, with respect to the upper and lower sheets superimposed,
A method of manufacturing a bag with a chuck, wherein in the sheet winding process, the upper and lower sheets are united by a sheet winding unit.

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