JP6731363B2 - Position adjustment mechanism - Google Patents

Description

The present invention relates to a position adjusting mechanism, for example, a position adjusting mechanism of a device such as a side guide or a folding line forming device that requires lateral position adjustment.

For example, a position adjustment mechanism that adjusts the distance between a pair of left and right side guides placed on a conveyor can rotate the screw shaft that is threaded in the opposite direction on the right and left to move the left and right side guides closer or further apart. The interval is adjusted by doing. The screw shafts are arranged at two front and rear positions of the conveyor, and each side guide is supported at two positions by a pair of brackets connected to the front and rear screw shafts. The front and rear screw shafts are connected by a chain, and by rotating one, the other can be rotated at the same time. Further, a connecting shaft may be used instead of the chain, and front and rear screw shafts may be connected via a bevel gear.

In the above-described conventional gap adjusting mechanism, since the left and right side guides move uniformly when the screw shaft is rotated, it is necessary to replace the side guide itself when offsetting the reference position (for example, the center position). ..

As a mechanism for solving this problem, for example, application of the guide device disclosed in Patent Document 1 can be considered. The technique disclosed in Patent Document 1 uses a screw shaft (adjustment shaft) having left and right threads in opposite directions, and rotates the screw shaft in the forward and reverse directions, as in the conventional adjusting mechanism described above. The spacing is adjusted by moving a pair of guide rollers close to or away from each other at the same time. Then, a slide shaft for adjusting the axial position of the pair of guide rollers with respect to the screw shaft is provided in parallel with the screw shaft for adjusting the gap, and the pair of guide rollers is rotated by rotating the slide shaft in the forward and reverse directions. By moving in the same direction, the pair of guide rollers are offset from the reference position.

Actual Kaihei 6-73021

However, in the technique disclosed in Patent Document 1, after the slide shaft is normally and reversely rotated and offset, the screw shaft is normally and reversely rotated, so that the pair of guide rollers are brought close to each other at the offset position at the same time. The distance is adjusted by moving it away or away. Therefore, for example, when you want to change the spacing of the side guides according to the product width with one side guide aligned with the reference, rotating the screw shaft shifts the position of the side guide at the reference position. You have to adjust the reference every time you adjust.

In order to solve the above-mentioned problems, the position adjusting mechanism according to the present invention (1) moves a plurality of moving objects arranged at a predetermined interval toward and away from each other, and moves the moving object in the moving direction. A position adjusting mechanism for adjusting a position, comprising a first screw shaft arranged in parallel with the moving direction, and a second screw shaft, and one of both sides of the first screw shaft in the axial direction of the positive screw It has a first positive male threaded portion, and has a first reverse male threaded portion of a reverse thread on the other side thereof, and a second positive male threaded portion of a positive thread on one of both sides in the axial direction of the second screw shaft. And a second reverse male screw part having a reverse screw on the other of both sides thereof, and a first female screw connector detachably attachable to both the first positive male screw part and the second positive male screw part. A male and a second female screw top detachably attachable to any of the first reverse male screw portion and the second reverse male screw portion, and the second female screw top is mounted and the second female screw top is attached . With the forward or reverse rotation of the first screw shaft or the second screw shaft without mounting the female screw top, the first female screw top reciprocates along the axial direction, and the plurality of movements occur by the reciprocating movement of the first female screw top. Only one of the objects moves, the second female screw top is mounted and the second female screw top is not mounted, and the first female screw shaft or the second screw shaft is not mounted. Reciprocally moves along the axial direction, and the second female screw top reciprocates so that only the other one of the plurality of moving objects moves, and the first female shaft and the first female screw top are connected to the first screw shaft. Two female screw tops are mounted, or the first female screw top and the second female screw top are mounted on the second screw shaft, and the first screw shaft on which the first female screw top and the second female screw top are mounted, or With the forward and reverse rotation of the second screw shaft, both of the plurality of moving objects move toward and away from each other at the same time .

According to the present invention, when both the first female screw top and the second female screw top are attached to one of the first screw shaft or the second screw shaft and the screw shaft of the attached one is rotated in the forward or reverse direction, the first female screw The top and the second female threaded top both move at the same time to move toward and away from each other. Therefore, a plurality of moving objects also move toward and away from each other simultaneously with the operation of one screw shaft. When the first female screw top and the second female screw top are attached to different screw shafts, respectively, when the first screw shaft is rotated forward and backward, the female screw top attached to the first screw shaft (first female screw top or second female screw top) As a result, the moving object linked to the female screw top moves, and the other moving objects do not move. On the other hand, when the second screw shaft is rotated in the forward or reverse direction, the other moving object moves, and one moving object that moves by the first screw shaft does not move. As described above, according to the present invention, it is possible to easily switch the mode in which the moving objects are individually moved and the mode in which both of them are simultaneously moved.

(2) A pair of base plates are arranged so as to extend in a direction orthogonal to the moving direction, and two pairs of mounting plates mounted so as to face each other are provided on the surfaces of the pair of base plates, and the pair of mounting plates are mounted. Each plate is provided with a through hole, the first screw shaft is in a state of being inserted into the through hole of the pair of mounting plates of one of the two sets, and the second screw shaft is the two sets thereof. Of the other one of the pair of mounting plates is inserted into the through hole, the first female screw top and the second female screw top are fixed in a state of being connected to the mounting plate, and the moving object is It is advisable to move integrally with the base plate. With this configuration, the first female screw top and the second female screw top are fixed to the mounting plate in a state where the first female screw top and the second female screw top are mounted on the male screw portion of the desired screw shaft, so that the movement object can be easily and reliably linked. ..

(3) The moving object may be supported by the base plate at a plurality of locations via supporting members. This is preferable because the moving object can be moved stably.

(4) The pair of base plates may be guided in the movement in the movement direction by a linear guide. With this configuration, when the first female screw top and/or the second female screw top tries to move in the axial direction due to the rotation of the predetermined screw shaft, the base plate moves smoothly, and the moving object is stabilized accordingly. It's good because you can move around.

(5) The moving object may be side guides arranged on both sides of the carrying device in the carrying direction. With this configuration, it is possible to appropriately guide the product according to the transport position (the position in the lateral direction orthogonal to the transport direction). In particular, for example, in the case of a carrying device used in a pillow packaging machine, etc., both side guides can be easily positioned at desired positions when the formation position of the center seal part in the pillow packaging machine is offset from the eccentricity/center. It's good because you can.

According to the present invention, it is possible to perform position adjustment for simultaneously moving or moving a plurality of moving objects at the same time as in the conventional case, and to individually change the moving objects with respect to, for example, changing the reference position or the product width. The position can be easily adjusted.

It is a front view which shows an example of the pillow packaging machine in which the position adjusting mechanism which concerns on this invention is mounted. It is a perspective view which expands and shows a part. It is a perspective view (the 1) showing one suitable embodiment of a position adjusting mechanism concerning the present invention. It is the perspective view (the 2). It is the front view. It is the top view. It is the left side view. It is the rear view. It is the exploded perspective view. It is a top view showing an example of a mounting pattern of the 1st female screw top and the 2nd female screw top. It is a top view showing an example of a mounting pattern of the 1st female screw top and the 2nd female screw top. It is a top view showing an example of a mounting pattern of the 1st female screw top and the 2nd female screw top.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not construed as being limited to this, and various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

FIG. 1 shows an example of a pillow wrapping machine in which the position adjusting mechanism according to the present invention is mounted, and FIG. 2 shows the essential parts thereof. This pillow wrapping machine is arranged on the upstream side of the wrapping machine body 1, a film supply device 2 for continuously supplying a band-shaped wrapping film to the wrapping machine body 1, and the packaging machine body 1. The main body 1 is provided with a package feed and supply device 4 for feeding the package 3 at predetermined intervals.

The film supply device 2 links the output of a drive motor (a motor capable of speed control such as a servomotor) (not shown) to the original roll 6 obtained by winding the strip-shaped film 5 into a roll, and the original roll 6 It is supplied to the packaging machine body 1 at a constant speed while appropriately controlling the rotation speed. In addition, various rollers 7 (only one is shown in the figure as a representative) are arranged at predetermined positions from the original roll 6 to the packaging machine main body 1, and the belt-shaped film 5 sent out from the original roll 6 is disposed. Is passed over the roller 7 and guided to the packaging machine body 1 through a predetermined path. In the present invention, the drive motor does not necessarily need to be linked to the original roll 6, and a feed roller may be provided on the transport path of the packaging film and pulled out.

The article conveying/supplying device 4 includes a sprocket 9 arranged at the front and rear, an endless chain 10 hung over the plurality of sprockets 9, and a plurality of pushing fingers 11 attached to the endless chain 10 at a predetermined pitch. Composed of and. As a result, when the pushing finger 11 hits the rear surface of the article to be packaged 3, the article 3 to be packaged also moves forward on the transport path along with the movement of the pushing finger 11.

The packaging machine body 1 includes a bag making device 15 for making the supplied strip-shaped film 5 into a tubular film 14, a center seal device 16 arranged on the downstream side of the bag making device 15, and a center seal device 16 thereof. Belt conveyor 17 that conveys the tubular film 14 that is arranged on the downstream side, a top seal device 20 that is arranged on the downstream side of the belt conveyor 17, and a carry-out conveyor 18 that is arranged on the downstream side of the top seal device 20. The holding belt 19 is provided above the belt conveyor 17 and immediately before the top seal device 20.

The bag-making device 15 allows the strip-shaped film 5 continuously supplied from the film supply device 2 to pass therethrough so that both side edge portions 5a of the strip-shaped film 5 are brought into contact with each other (polymerization), and are formed into a tubular shape. The film-shaped film 14 is made into a bag. The bag making device 15 of the present embodiment is open on the lower side, and is set so that both side edge portions 5a of the strip film 5 are located on the lower side.

Further, the articles to be packaged 3 which are sequentially supplied from the article-to-be-packaged conveying/supplying device 4 to the packaging machine body 1 are inserted into the bag making machine 15. As a result, the articles 3 to be supplied to the bag making device 15 are arranged in the tubular film 14 at predetermined intervals. Further, since the article 3 to be packaged is contained in the tubular film 14 as described above, the belt conveyor 17 conveys the tubular film 14 containing the article 3 to be packaged.

The center seal device 16 seals both side edge portions 5 a of the polymerized strip film 5. The center seal device 16 is provided with a pair of left and right sealers, and sandwiches the overlapped portions of both side edge portions 5a of the strip film 5 with the pair of sealers and heats them for heat sealing.

The restraining belt 19 is arranged in the immediate vicinity of the upstream side of the top seal device 20, and restrains the article to be packaged 3 in the tubular film 14 from being lifted upward so that it can be conveyed while maintaining a horizontal state. There is.

The top seal device 20 seals and cuts the tubular film 14 in a direction orthogonal to the traveling direction of the film, that is, in a direction traversing the film. The top seal device 20 is of a so-called box motion type, and a pair of top sealers 21 and 22 arranged above and below revolve around a predetermined locus while maintaining a state in which their seal surfaces 21a and 22a face each other. The drive mechanism for moving is provided. Both top sealers 21 and 22 operated by this drive mechanism move closer to each other from a reference position separated by a predetermined distance to sandwich the tubular film 14 from above and below, and thereby the film portions contacting the sealing surfaces 21a and 22a are removed. It is pressurized and heated at a predetermined pressure. Then, the top sealers 21 and 22 move forward along the moving direction of the tubular film 14 while maintaining the state where they are close to each other and sandwich the tubular film 14 as described above. The moving speed at this time is equal to the moving speed of the tubular film 14. During this movement, the sandwiched tubular film is cut. Both top sealers 21, 22 move away from each other when they move a predetermined distance, and move in the direction opposite to the moving direction of the tubular film 14 to reach the reference position. The film portion to be sealed/cut is a predetermined position between the front and rear objects to be packaged 3. As a result, by passing through the top seal device 20, the leading portion of the tubular film 14 is separated from the subsequent portion, and the package 25 is manufactured.

Further, in the present embodiment, above the transport surface of the belt conveyor 17, the first side guide 26 and the second side guide 27 that guide the packaged object 3 contained via the left and right side surfaces of the tubular film 14 are provided. It is arranged. The first side guide 26 is arranged on the back side of the packaging machine body 1/belt conveyor 17 (left side in the transport direction), and the second side guide 27 is on the front side of the packaging machine body 1/belt conveyor 17 (in the transport direction). Place it on the right side). Further, the packaging machine body 1 has a position adjusting mechanism 30 for adjusting the positions of the pair of left and right first side guides 26, second side guides 27 in the lateral direction (direction orthogonal to the transport direction of the tubular film 14). Prepare

The position adjusting mechanism 30 of the present embodiment changes the distance between the first side guide 26 and the second side guide 27 at the same time by approaching and separating from each other, for example, while maintaining a state where the respective distances from the reference position are equal, as in the conventional case. And the function of individually adjusting the positions of the first side guide 26 and the second side guide 27, respectively. A specific configuration example for realizing these two functions is as follows.

FIG. 3 and subsequent drawings show a preferred embodiment of the position adjusting mechanism 30. The first side guides 26 arranged on the inner side of the device are supported by the first side guide brackets 31 at two positions, front and rear. Both of these two first side guide brackets 31 are linked on the first base plate 32. The first base plate 32 has an elongated strip plate shape that is arranged in parallel below the back side of the belt conveyor 17 along the transport direction. Each of the first side guide brackets 31 is connected to both ends of the upper surface of the first base plate 32 in the longitudinal direction (front and rear along the transport direction). As a result, the first side guide 26, the two first side guide brackets 31, and the first base plate 32 are integrated and, for example, when the first base plate 32 is moved orthogonally to the transport direction, The guide 26 also moves in the same direction.

More specifically, the first side guide bracket 31 is formed by connecting a plurality of members and has a substantially U-shape as a whole, and a tip 31 a above the upper side is connected to the first side guide 26. The lower end 31b of the first side guide bracket 31 is linked to the first base plate 32 via the first front mounting plate 35 or the first rear mounting plate 36. That is, on the upper surface of the first base plate 32, the first front mounting plate 35 is arranged in a standing state on the front side, that is, on the downstream side in the carrying direction, and the first rear mounting plate 36 is standing on the rear side, that is, on the upstream side in the carrying direction. Will be placed in. The first front attachment plate 35 and the first rear attachment plate 36 in the upright state are flat plates, and their planes are arranged parallel to the transport direction. The lower end 31b of one of the first side guide brackets 31 is connected with a bolt, a set screw, or the like in a state of being in contact with the side surface of the first front mounting plate 35 on the front side in the transport direction. Further, the lower end portion 31b of the other first side guide bracket 31 is connected with a bolt, a set screw or the like in a state of being in contact with the side surface of the first rear mounting plate 36 on the rear side in the transport direction.

Similarly, the second side guides 27 arranged on the front side of the apparatus are supported by the second side guide brackets 33 at the two front and rear positions. These two second side guide brackets 33 are linked to the vicinity of both front and rear ends on a second base plate 34, which is an elongated strip-shaped plate and is arranged in parallel along the transport direction, below the front side of the belt conveyor 17. To be done. The linkage with the second base plate 34 is performed via a second front mounting plate 38 and a second rear mounting plate 39 which are arranged on the upper surface of the second base plate 34 in the front and back along the film transport direction. The second front attachment plate 38 and the second rear attachment plate 39 are both flat plates, and their planes are arranged parallel to the transport direction.

The second side guide bracket 33 is formed by connecting a plurality of members and has a substantially U-shape as a whole, and an upper end 33a above the second side guide bracket 33 is connected to the second side guide 27. Further, the lower end portions 33b of the two second side guide brackets 33 arranged at the front and rear are connected to predetermined side surfaces of the second front mounting plate 38 and the second rear mounting plate 39, respectively. Thereby, the second side guide 27, the two second side guide brackets 33, and the second base plate 34 are integrated, and when the second base plate 34 is moved in a direction orthogonal to the transport direction, The guide 27 also moves in the same direction.

The first base plate 32 and the second base plate 34 are arranged in parallel at a predetermined interval. A guide plate 60 is arranged above the first base plate 32 and the second base plate 34 so as to bridge them. The guide plates 60 have an elongated strip plate shape, and two guide plates 60 are arranged in parallel in the front-rear direction along the film transport direction. At both ends of the guide plate 60 in the longitudinal direction, connecting plates 61 in an upright state are attached upward. The connecting plate 61 is linked to a machine frame of a device (not shown). Thereby, the two guide plates 60 are fixedly installed.

The pair of front and rear guide plates 60, the first base plate 32, and the second base plate 34 are linked via a linear guide 65 such as an LM guide. Rails 62 are attached to both sides of the lower surface of the guide plate 60 in the longitudinal direction. A block body 63, which is a bearing that is linked to the rail 62 and slides along the rail 62, is attached to the upper surfaces of the first base plate 32 and the second base plate 34. The rail 62 and the block body 63 form a linear guide 65. Therefore, the first base plate 32 and the second base plate 34 are linked to the rails 62 of the guide plate 60 at two locations along the longitudinal direction, respectively, and the function of the linear guides 65 ensures a stable and smooth longitudinal direction of the guide plate 60. Move back and forth along.

The first front mounting plate 35 and the second front mounting plate 38 are arranged to face each other, and through holes 35a and 38a are provided on the facing surfaces, respectively. The first screw shaft 40 is mounted so as to pass through the through holes 35a and 38a. The inner diameters of the through holes 35a and 38a are set to be larger than the outer diameter of the first screw shaft 40. Therefore, when the first screw shaft 40 in the state of penetrating the through holes 35a and 38a is rotated in the forward and reverse directions, the portions of the through holes 35a and 38a idle and allow the rotation. Both ends of the first screw shaft 40 penetrate the first front mounting plate 35 and the second front mounting plate 38, respectively, and project outward, and are rotatably supported by bearing brackets 41 arranged on the outer sides thereof. Each of the pair of bearing brackets 41 is fixed to a machine frame of an apparatus (not shown). Further, a disk-shaped first handle 42 is attached to the front end of the first screw shaft 40, and the first screw shaft 40 rotates forward and backward by rotating the first handle 42 forward and backward. Furthermore, an indicator 43 is provided between the first handle 42 and the bearing bracket 41.

The numerical value displayed on the display unit 43a of the indicator 43 increases or decreases as the first screw shaft 40 arranged so as to pass through the inside of the first handle 42 and eventually the indicator 43 rotates. The numerical value displayed on the display 43a is, for example, the distance from the reference position to the first side guide 26. The reference position is, for example, a position where a pair of left and right sealers of the center seal device 16 come into contact with each other, and both side edge portions of the strip-shaped film 5 formed in a tubular shape by the bag making device 15 in a direction orthogonal to the transport direction. It is set as a position where 5a is formed.

The first screw shaft 40 includes a first positive male screw portion 40a, which is a positive screw thread, and a first reverse male screw portion 40b, which is a reverse screw thread, in predetermined sections on both ends. In the present embodiment, the first male screw portion 40a is arranged on the front side and the first male screw portion 40b is arranged on the inner side, but they may be reversed. Further, in the present embodiment shown in FIGS. 3 to 9, the first female screw top 44 is detachably connected to the outer surface side of the first front attachment plate 35 located on the back side. In this embodiment, the first female screw top 44 is fixed by using two setscrews 45. The first female screw top 44 includes a female screw portion 44a that penetrates in the axial direction at the center of the disc-shaped main body. The female screw portion 44a has a reverse thread, and is screwed with a first reverse male screw portion 40b provided on the inner side of the first screw shaft 40. Therefore, since the first female screw top 44 is fixed to the first front mounting plate 35, when the first screw shaft 40 rotates in the forward and reverse directions, the first reverse male screw portion of the first screw shaft 40 accordingly. The first female screw top 44 reciprocates along the axial direction of the first screw shaft 40 due to the fitting of the female screw portion 44a of the first female screw top 44 with the 40b. As a result, the first front mounting plate 35 connected to the first female screw top 44, and thus the first side guide 26, reciprocates along the axial direction of the first screw shaft 40.

On the other hand, on the side of the second front mounting plate 38, a member that is screwed with the first male screw portion 40a unlike the first female screw top 44 is not attached. Therefore, as described above, the through hole 38a of the second front mounting plate 38 is in a so-called stupid hole state with respect to the first screw shaft 40, and idles even when the first screw shaft 40 rotates in the forward and reverse directions. The front mounting plate 38 and thus the second side guide 27 do not move.

Therefore, when the first handle 42 is rotated in the forward or reverse direction, only the first side guide 26 on the back side reciprocates along the axial direction of the first screw shaft 40, and in the lateral direction orthogonal to the single carrying direction. The position can be adjusted.

On the other hand, the first rear mounting plate 36 and the second rear mounting plate 39 are arranged so as to face each other, and through holes 36a and 39a are provided on the facing surfaces, respectively. The second screw shaft 50 is mounted so as to penetrate the through holes 36a and 39a. The inner diameters of the through holes 36a and 39a are set to be larger than the outer diameter of the second screw shaft 50. Therefore, when the second screw shaft 50 that has penetrated into the through holes 36a and 39a is rotated in the forward and reverse directions, the portions of the through holes 36a and 39a run idle and allow the rotation. The second screw shaft 50 and the first screw shaft 40 are arranged in parallel, and also arranged in parallel with the guide plate 60.

Both ends of the second screw shaft 50 pass through the first rear mounting plate 36 and the second rear mounting plate 39, respectively, and project outward, and are rotatably supported by bearing brackets 51 arranged outside thereof. Each of the pair of bearing brackets 51 is fixed to a machine frame of an apparatus (not shown). Further, a disc-shaped second handle 52 is attached to the front end of the second screw shaft 50, and the second screw shaft 50 is rotated in the normal and reverse directions by rotating the second handle 52 in the normal and reverse directions. Furthermore, an indicator 53 is provided between the second handle 52 and the bearing bracket 51.

The numerical value displayed on the display portion 53a of the indicator 53 increases or decreases as the second screw shaft 50 arranged so as to pass through the inside of the second handle 52 and eventually the indicator 53 rotates. The numerical value displayed on the display portion 53a is, for example, the distance from the reference position to the second side guide 27. Therefore, when the numerical values displayed on the display unit 43a and the display unit 53a are equal, the distance from the reference position of the center to the first side guide 26 and the distance to the second side guide 27 are equal, and center alignment is performed. You're done. On the other hand, when the numerical values displayed on the display unit 43a and the display unit 53a are different, the center is deviated to be eccentric.

The second screw shaft 50 includes a second positive male screw portion 50a, which is a positive screw thread, and a second reverse male screw portion 50b, which is a reverse screw thread, in a predetermined section on both end sides. Further, the second male screw portion 50a on the front side has the same screw specifications as the screw direction, pitch, etc., as the first male screw portion 40a provided on the front side of the first screw shaft 40. The second reverse male screw portion 50b on the back side has the same screw specifications as the first reverse male screw portion 40b provided on the back side of the first screw shaft 40.

Further, in the present embodiment shown in FIGS. 3 to 9, the second female screw top 54 is detachably connected to the outer surface side of the second rear mounting plate 39 located on the front side. In the present embodiment, the second female screw top 54 is fixed by using two setscrews 55. The second female threaded piece 54 includes a female threaded portion 54a that penetrates in the axial direction at the center of the disk-shaped body. The female screw portion 54a has a positive screw thread and is screwed with a second positive male screw portion 50a provided on the front side of the second screw shaft 50. Therefore, since the second female screw top 54 is fixed to the second rear mounting plate 39, when the second screw shaft 50 rotates forward and backward, the second positive male screw portion of the second screw shaft 50 is accordingly rotated. The second female screw top 54 reciprocates along the axial direction of the second screw shaft 50 due to the fitting of the female screw portion 54a of the second female screw top 54 with the 50a. As a result, the second rear mounting plate 39 connected to the second female screw top 54, and thus the second side guide 27, reciprocates along the axial direction of the second screw shaft 50.

On the other hand, on the side of the first rear mounting plate 36, a member that is screwed with the second reverse male screw portion 50b unlike the second female screw top 54 is not attached. Therefore, as described above, the through hole 36a of the first rear mounting plate 36 is in a so-called stupid hole state with respect to the second screw shaft 50, and idles even when the second screw shaft 50 rotates forward and backward. The rear mounting plate 36 and thus the first side guide 26 do not move.

Therefore, when the second handle 52 is rotated in the normal or reverse direction, only the second side guide 27 on the front side reciprocates along the axial direction of the second screw shaft 50, and the second lateral guide 27 in the lateral direction orthogonal to the single conveying direction. The position can be adjusted.

Therefore, the user can independently adjust the positions of the first side guide 26 and the second side guide 27 by appropriately operating the first handle 42 and the second handle 52. As a result, for example, when offsetting the position of the center seal portion in the package by shifting the center seal position by a predetermined distance from the center in the width direction and shifting the position in the width direction without replacing the side guide, The positions of the first side guide 26 and the second side guide 27 can be adjusted to appropriate distances from the reference position where the pair of sealers of the center seal device 16 contact each other.

In the above-described embodiment, the first female screw top 44 and the second female screw top 54 are detachably attached to the first front mounting plate 35 and the second rear mounting plate 39, respectively. Then, for example, the first reverse male screw portion 40b on the back side of the first screw shaft 40 and the second reverse male screw portion 50b on the back side of the second screw shaft 50 have the same screw specifications, so the first female screw top 44 Can also be mounted on the second reverse male screw portion 50b on the inner side of the second screw shaft 50. Therefore, for example, by removing the bearing bracket 41 on the back side of the first screw shaft 40 and removing the set screw 45, the first female screw top 44 is removed from the first screw shaft 40. After removing the first female screw top 44, the bearing bracket 41 is set to support the back end of the first screw shaft 40 by bearing. Then, the removed first female screw top 44 is mounted from the back side of the second screw shaft 50, is linked to the second reverse male screw portion 50b, and is fixed to the first rear mounting plate 36 using the set screw 45.

As a result, as shown in FIG. 10, the first female screw top 44 and the second female screw top 54 are mounted on the back side and the front side of the second screw shaft 50, respectively. When the second screw shaft 50 is normally or reversely rotated in this state, the first female screw top 44, the second female screw top 54, and thus the first side guide 26 and the second side guide 27 approach and separate from each other. In other words, the center position between the first side guide 26 and the second side guide 27 when the first female screw top 44 is attached is always the center reference position, and they approach and separate from each other, so that the positions and intervals of both are maintained. adjust. In this way, similarly to the conventional case, the positions of the first side guide 26 and the second side guide 27 are simultaneously adjusted by operating one screw shaft.

Further, none of the female screw tops is linked to the first screw shaft 40, and the first screw shaft 40 is in a free state. Therefore, even if the first screw shaft 40 is normally or reversely rotated, neither the first side guide 26 nor the second side guide 27 moves.

Contrary to the above, from the state of the above-described embodiment, the second female screw piece 54 mounted on the front side of the second screw shaft 50 is removed and connected to the second front mounting plate 38 on the front side of the first screw shaft 40. Then, as shown in FIG. 11, the first female screw top 44 and the second female screw top 54 are linked to both sides of the first screw shaft 40. As a result, the first screw shaft 40 serves as an operation shaft, and the first side guide 26 and the second side guide 27 can be moved toward and away from each other.

Further, when the positions of the first side guide 26 and the second side guide 27 are adjusted separately, the second female screw top 54 is attached to the front side of the first screw shaft 40 to reverse the second screw, contrary to the above-described embodiment. The first female screw top 44 may be attached to the inner side of the shaft 50 (see FIG. 12).

In this way, by appropriately changing the position at which the female screw top is attached to the screw shaft, it is possible to adjust the positions of the first side guide 26 and the second side guide 27 at the same time or individually, and The side guides that move with the rotation of the first screw shaft 40 and the second screw shaft 50 can be appropriately changed.

In the above-described embodiment, each female screw top is attached to the outside of the attachment plate, but one or both may be attached to the inside of the attachment plate.

Further, in the above-described embodiment, each female screw top has a female screw portion that penetrates in the axial direction at the center of the disc-shaped main body, and is configured as an endless integrally formed body in the circumferential direction. The structure is not limited to this, and may be, for example, a half-divided structure having an inner diameter screw. In this case, the female screw top can be attached to and detached from the screw shaft without removing the bearing bracket, which facilitates the mounting work. Further, each female screw top has only to have a female screw portion in a state where it is attached to a screw shaft, and the outer shape is not limited to a disk and can be a rectangular shape or any other shape.

Further, in the above-described embodiment, an example in which the both side edge portions 5a of the strip-shaped film 5 are applied to the pillow packaging machine in which the lower side is shown is shown, but it is applied to the reverse pillow packaging machine in which the both side edge portions 5a are overlapped on the upper side. It may be used for various other packaging machines.

Further, in the above-described embodiment, the side guide is used for position adjustment, but the present invention is not limited to this, and can be used for position adjustment of various devices and equipment.

Although various aspects of the present invention have been described above by using the embodiments and the modifications, these embodiments and explanations are not made for the purpose of limiting the scope of the present invention, and are not intended for understanding the present invention. It should be added that it was provided to contribute. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described in the specification, and also includes combinations of various aspects of the present invention disclosed in the present specification within the scope. Of the present invention, the configuration for which a patent is sought is specified in the appended claims, but even if the present location is not specified in the claims, it is disclosed in the present specification. Just in case, I would like to note that there is a possibility that I will claim the configuration in the future.

17 Belt conveyor (conveyor)
26 1st side guide 27 2nd side guide 30 Position adjustment mechanism 31 1st side guide bracket 32 1st base plate 33 2nd side guide bracket 34 2nd base plate 35 1st front mounting plate 36 1st rear mounting plate 38 2nd front Mounting plate 39 Second rear mounting plate 40 First screw shaft 40a First male screw portion 40b First reverse male screw portion 44 First female screw top 50 Second screw shaft 40a Second male screw portion 40b Second reverse male screw portion 54 Second Female thread top 60 Guide plate 65 Linear guide

Claims (5)

A position adjusting mechanism that moves a plurality of moving objects arranged at a predetermined interval toward and away from each other, and adjusts the position of the moving object in the moving direction,
A first screw shaft arranged in parallel with the moving direction, and a second screw shaft,
On one of both sides in the axial direction of the first screw shaft, there is a first positive male screw part of a positive screw, and on the other of both sides thereof, a first reverse male screw part of a reverse screw
One of the two axial sides of the second screw shaft has a second positive male screw portion of a positive screw, the other of the two sides has a second reverse male screw portion of a reverse screw,
A first female screw top detachably attachable to both the first male screw portion and the second male screw portion;
A second female screw top detachably attachable to both the first reverse male screw part and the second reverse male screw part,
Equipped with
The first female screw top is reciprocally moved along the axial direction with forward or reverse rotation of the first screw shaft or the second screw shaft with the first female screw top attached and the second female screw top not attached , and Only one of the plurality of moving objects moves due to the reciprocating movement of the first female screw top,
The second female screw top is reciprocally moved along the axial direction with forward or reverse rotation of the first screw shaft or the second screw shaft with the second female screw top attached and the first female screw top not attached. Only the other of the plurality of moving objects is moved by the reciprocating movement of the second female screw top,
The first female screw top and the second female screw top are mounted on the first screw shaft, or the first female screw top and the second female screw top are mounted on the second screw shaft, and the first female screw top and A position characterized in that both of the plurality of moving objects are moved toward and away from each other at the same time with forward and reverse rotations of the first screw shaft or the second screw shaft equipped with the second female screw top. Adjustment mechanism. Arranging a pair of base plates so as to extend in a direction orthogonal to the moving direction,
On the surface of the pair of base plates, two pairs of mounting plates mounted so as to face each other are provided,
Each of the pair of mounting plates has a through hole,
The first screw shaft is in a state of being inserted into the through hole of the pair of mounting plates of one of the two sets,
The second screw shaft is in a state of being inserted into the through hole of the other one of the pair of mounting plates of the two sets,
The first female screw top and the second female screw top are fixed in a state of being connected to the mounting plate,
The position adjusting mechanism according to claim 1, wherein the moving object is configured to move integrally with the base plate. The position adjusting mechanism according to claim 2, wherein the moving object is supported by the base plate at a plurality of positions via supporting members. The position adjusting mechanism according to claim 2, wherein the pair of base plates are guided by a linear guide in movement in the movement direction. The position adjusting mechanism according to any one of claims 1 to 4, wherein the moving object is a side guide arranged on both sides of the conveying device in the conveying direction.

Images