JP2916671B2 - Tape bundling method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape binding method and apparatus for binding an upper portion of a bag-like film, which is formed into a cylindrical shape by a vertical bag making and filling machine and filled with an object to be packaged and whose lower end is sealed. It is about.

[0002]

2. Description of the Related Art A bag-shaped film which is disposed in a vertical bag making and filling machine for obtaining a package by end-sealing and cutting the upper and lower positions of an object to be packaged which is dropped and supplied to a cylindrical film, and having a lower end sealed. For example, there is an apparatus disclosed in Japanese Patent Application Laid-Open No. 2-72010 as an apparatus for binding the film to a tape at the upper part of the packaged article in Japanese Patent Application Laid-Open No. 2-72010. This tape bundling device is provided with a bag upper holding means for holding the upper central portion of the bag-shaped film immediately below a sealing device for performing end sealing / cutting on the tubular film, and under the bag upper holding means. In addition, an elevating table provided with a bag upper squeezing means comprising four upper and lower sandwiching claws for squeezing the bag-shaped film is arranged so as to be able to move up and down. Then, with the bag upper holding means holding the upper central portion of the bag-shaped film, by swinging and closing the pair of holding claws forming a pair above and the pair of holding claws forming a pair below, respectively, The upper part of the bag-like film is narrowed down. Next, start lowering the elevating table,
When the upper bag squeezing means pulls down the squeezed portion of the bag to the vicinity of the article packed in the bag, the upper bag squeezing means is opened to release the bag squeezing. Subsequently, the slide table on which the adhesive tape wrapping mechanism is disposed moves forward toward the bag squeezing portion located between the upper and lower pinching claw groups, and the adhesive tape wrapping mechanism adheres to the bag squeezing portion. Wrap and tie the tape. Then, when the lifting table is lowered and stopped, the upper and lower pinching claw groups are opened so that the bags bound by the adhesive tape fall on the conveyor by the action of gravity.

As a tape binding device, Japanese Patent Publication No.
There is another configuration disclosed in Japanese Patent No. 7257. In this bundling device, a rotating shaft is disposed on the lower side of a sealing device that performs end sealing and cutting on a cylindrical film, and between the upper and lower disks that rotate horizontally with the rotating shaft integrally,
A plurality of arm sets each composed of a pair of binding arms are pivotally supported at a required interval in the circumferential direction so as to be horizontally swingable. And
In a state where the rotating shaft is rotating, when each set of binding arms arrives at the throttle position immediately below the sealing device, the pair of binding arms are swung from the open position to the closed position, whereby the sealing device is moved from the sealing device. The hanging bag-like film is narrowed down and pinched. In the binding device, a binding device is disposed at a binding position that is circumferentially separated from the drawing position, and the upper portion of the bag that is transported aerial from the drawing position to the binding position while being sandwiched by the pair of binding arms, The binding device is configured to be bound with an adhesive tape.

[0004]

In the tape binding device according to the former configuration described above, of the four pinching claws, two pinching claws provided at the upper portion and two pinching claws provided at the lower portion are provided. The shape of the pinching introduction part in the nail is the same. For this reason, if the distance between the uppermost position of the packaged material filled in the bag-like film and the end seal position of the bag-like film is short, the lower pinching claw is located on the side of the film bulged by the filling of the packaged material. In this case, a pinhole is often generated in the film due to the claw tip caught on the center seal portion.
Further, in the case of the gusset formed, since the gusset folding portion is formed on the side surface of the bag, it is pointed out that the occurrence rate of the catch of the pinching claws increases. Furthermore, since the pinching claws when squeezing and holding the bag-shaped film are rocked,
The movement trajectory of the pinching claw has an arc shape that moves from the side of the film toward the hanging center of the bag-like film from behind the bag-like film, and it is expected that the occurrence rate of the pinhole described above will further increase.

[0005] Since the movement trajectory of the pinching claws when the bag-like film is narrowed is formed in an arc shape, the binding upper position of the packaged bag tends to be curved or twisted in the bag width direction, and the commercial value of the product is high. Is disadvantageously reduced. Further, since the pinching claw descends with respect to the film in a state where the bag-shaped film is squeezed, it is necessary to reduce the filling amount of the packaged object with respect to the cut pitch of the film. That is, while requiring a large amount of film for the filling amount of the packaged item,
There is also a disadvantage that the length of the binding ear portion formed above the tape binding portion is large and the appearance is inferior. Furthermore, since the tape is tied under the end seal position by only one adhesive tape wrapping mechanism, the next film cannot be fed until the tape is tied. Problems that cannot be addressed are also pointed out.

In the tape bundling device according to the latter configuration, the upper and lower four bundling arms have the same shape, and the movement trajectory of the bundling arm has an arc shape.
As in the former prior art described above, there are inherent problems such as the occurrence of pinholes. In addition, since it is a rotary type in which the arm set moves around the lower part of the seal device, it is excellent in high speed, but the device is complicated and large, the device cost is high, and there is also a problem that a large installation space is required. be pointed out. Further, since the seal position (aperture position) and the binding position are set at positions separated from each other, there is a disadvantage that good binding is not performed due to a positional shift of the bags when the bags are transported by air to the binding position. .

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems inherent in the prior art, and has been proposed to solve the problem suitably. It is an object of the present invention to provide a tape bundling method and a device capable of preventing the size of the device, reducing the size and the cost of the device by enabling high-speed packaging, and forming a beautiful fan-shaped shape at the ear above the binding position. I do.

[0008]

In order to overcome the above-mentioned problems and achieve the intended object, a tape bundling method according to the present invention comprises a film feeding path in a vertical bag making and filling machine,
In a tape bundling device provided below a pair of end sealers that move horizontally opposed to each other, before engagement of the end sealer after stopping intermittent feeding of the bag-shaped film sealed at the lower end fed the film feeding path, When the portion to be squeezed and held is pressed flat in the same direction as the opening and closing direction of the end sealer to release air in the bag, and when the end sealer is engaged, the center of the bag-like film immediately below the disposition position of the sealer Holding the portion, timing the end sealer to engage, release the pressing of the bag-shaped film, and when the end sealer is in the engaged state, press down the flat-shaped pressing of the bag-shaped film. Open and close the bag-shaped film by moving the pair of upper and lower film sandwiching claws horizontally opposite each other from the left and right direction that intersects the opening and closing direction of the end sealer. During the narrowing, the opening of the end sealer is started while the upper central portion of the bag is held, and after the completion of the narrowing of the bag-shaped film, the film is held by the film-holding claw, and then the upper central portion of the bag is held. Is released, and the film pinching claw is laterally moved to one of the left and right positions of the film feeding path which does not hinder the next film feeding while holding the bag-shaped film, and the movement of the pinching claw is performed. In the process, the tape is bound to the bag-like film between the upper and lower film sandwiching claws by any one of the left and right tape binders.

Further, in order to preferably carry out the above method,
A tape binding device according to another invention of the present application is a tape binding device provided below a pair of end sealers that horizontally move across a film feeding path in a vertical bag making and filling machine, wherein the film By moving in a lateral direction intersecting with the opening and closing direction of the end sealer with respect to the feeding path, the bag-shaped film having a sealed lower end on the feeding path is narrowed and pinched, and the film is wrapped by a tape tying device in the pinched state. In order to bind the tape to the narrowing-down portion, at least one pair of a pair of film sandwiching claws vertically separated from each other is provided,
The opening angle of the film squeezing introduction portion formed to be open to the side opposite to the other film sandwiching claw of the pair in the lower film sandwiching claw is larger than the opening angle of the film squeezing introduction portion in the upper film sandwiching claw. It is characterized by being set.

Further, in order to preferably carry out the above-mentioned method,
A tape binding device according to still another invention of the present application is a tape binding device provided below a pair of end sealers that horizontally move across a film feeding path in a vertical bag making and filling machine, Activated before the end seal is applied to the cylindrical film on the film feed path, the lower end hanging down below the end sealer presses the sealed bag-shaped film to release air in the bag. Means, and a pair of film pinching claws that move oppositely from both left and right sides intersecting the opening and closing direction of the end sealer that sandwiches the bag-shaped film held and drooped at the lower part of the end sealer to narrow and pinch the film. Squeezing means, lateral moving means for integrally moving a pair of film pinching claws holding the bag-like film to the right or left side of the film feeding path, and Two tape bundling means disposed on each of the right and left sides of the film feeding path in the lateral movement path of the pinching claw, and winding and affixing a tape to a bag-like film narrowed and pinched by the pinching claw; and It is characterized by comprising.

Further, in order to preferably carry out the above method,
A tape binding device according to still another invention of the present application is a tape binding device provided below a pair of end sealers that horizontally move across a film feeding path in a vertical bag making and filling machine, Before the end sealer is closed, the filled lower end of the article to be packaged located below the sealer is operated and controlled so as to press the sealed bag-shaped film, and intersects the opening and closing direction of the end sealer. A pair of film pinching claws disposed so as to be able to move in the left-right direction and squeezing the film from the left and right sides of the upper part of the bag-shaped film at a position below the end sealer being sealed by the end sealer and holding the film at the center of the film feeding path; Immediately below the end sealer, before the end sealer is closed and before the bag-like film is clamped by the film-clamping claw, the widthwise center of the film is Film holding means that operates in conjunction with the opening and closing operation of the end sealer to press and hold, driving means for moving the pair of film pinching claws to face each other, and position detecting means for detecting a position when the end sealer is closed, And control means for receiving a signal input from the position detecting means of the end sealer and activating the driving means of the film-clamping claw.

[0012]

Before the end sealer is engaged with the end sealer after the intermittent feeding of the tubular film is stopped, the portion to be squeezed and held of the bag-shaped film whose lower end is sealed below the end sealer is flattened from the same direction as the opening and closing direction of the end sealer. The air in the bag is evacuated by pressing in the shape. When the end sealer is engaged, the central portion of the bag-shaped film is held immediately below the disposition position of the sealer, and the pressing of the bag-shaped film is released at the timing when the sealer is engaged. The pair of upper and lower film-holding claws are narrowed down and held by horizontally moving the pair of upper and lower film-holding claws from the left and right directions intersecting the opening and closing direction of the end sealer at the flattened narrowing and holding planned portion of the bag-shaped film that is pressed flat. Note that the portion to be narrowed down and held in the film is pressed in a flat shape in advance, so that narrowing down by the film-holding claw is favorably performed. Further, after the film is clamped by the film-clamping claws, the holding of the upper central portion of the bag is released, so that the bag-shaped film does not fall. Then, the film pinching claw holding the bag-shaped film is laterally moved to either one of the left and right positions of the film feeding path as it is, and the tape is tied by the tape tying device. As a result, the next film can be fed while the tape is being bound, and it is possible to cope with a high speed operation.

[0013]

Next, a method for binding tapes according to the present invention will be described.
A description will be given below with reference to the accompanying drawings in relation to a device capable of suitably performing this.

1 to 5 show the overall structure of a tape binding device according to an embodiment.
A bag-shaped film 12 which is disposed below the end seal device 11 in the vertical bag making and filling machine and has a sealed lower end hanging down from the end seal device 11 is filled with an object to be packaged (not shown). After sealing / cutting is performed at the position, the upper portion of the bag-like film 12 is configured to be bound with a tape. In the end seal device 11, a pair of end sealers 13, 13 are disposed so as to be horizontally movable across a vertical film feeding path. The film feeding path is a cylindrical film that is intermittently fed from a raw roll (not shown), formed into a cylindrical shape via a bag making machine, and has a center seal applied to edges overlapping in the longitudinal direction. Are intermittently fed. Then, at the timing when the feeding of the tubular film is stopped, the film is placed at the upper and lower positions sandwiching the article to be supplied supplied to the film by the end sealer 1.
The end seal is applied by sandwiching between 3, 13. Note that one end sealer 13 is provided with a cutter 35 (see FIG. 17),
The cutting of the film is also achieved by the cutter 35 advancing toward the groove provided in the other end sealer 13 when the cylindrical film is pressed by the third and the third 13.

The opposed end sealers 13, 13
The operating mechanism 14 for horizontally moving the first link 15 and the second link 16 horizontally includes a first link 15 and a second link 16.
Are driven by a servo motor SM.
That is, two guide rods 17, 17 are horizontally opposed to each other with the vertical feed path of the tubular film interposed therebetween, and the end sealer 13, 13 are fixed respectively. Figure 2,
As shown in FIG. 3, a small-diameter pulley 19 attached to the servomotor SM and a large-diameter pulley 21
The first timing belt 22 is wound between the small-diameter pulley 23 coaxially fixed to the large-diameter pulley 21 and another large-diameter pulley 24.

The following first link 15 is connected to the large-diameter pulley 24 in a related manner. That is, one end of a link rod 27 is pivotally attached to an arm 26 coaxially fixed to the large-diameter pulley 24, and the other end of the link rod 27 is pivotally attached to an open end of an arm 29 fixed to a rotating shaft 28, thereby 1
The link 15 is constituted. And the servo motor S
If M is rotated forward and backward at the required timing, the first link 15 operates to rotate the rotary shaft 28 forward and reverse at the required center angle. Further, the rotation shaft 28 and the end sealer 13, 1
3 is connected to the second link 16. That is, the illustrated arm 30 is inserted and fixed to the rotation shaft 28 at a portion deviated from the center thereof, and one end of a short link rod 31 is pivotally attached to the short end of the arm 30. The other end of the link rod 31 is connected to the one slider 18.
Is pivoted to. One end of a long link rod 32 is pivotally connected to the longitudinal end of the arm 30, and the other end of the link rod 32 is pivotally connected to the other slider 18 as a whole, and a toggle mechanism ( (Operation mechanism) 14. The operation of the first link 15 causes the rotation shaft 2
When the motor 8 rotates forward and backward at the required center angle, the second link 16 also operates, and as shown in FIGS. 10 and 12, the movement for separating (fully opening) and approaching (fully closing) the end sealers 13, 13 is reciprocated. You.

The operation of the servo motor SM is controlled by receiving a command from a control circuit 33 as control means shown in FIG. An encoder E as a pulse signal transmitter (position detecting means) is provided to the servo motor SM.
Are attached, and the end sealer 13 from the encoder E,
13 is input to the control circuit 33, and the operation of the tape binding device 10 is controlled based on the signal. As shown in FIGS. 1 and 2, a detection dog 77 is provided on one slider 18, and an origin detection sensor S for detecting the detection dog 77 is provided at an appropriate position on the apparatus frame 20. A signal from the origin detection sensor S is input to the control circuit 33. That is, the home position of the end sealers 13, 13 output from the home position detection sensor S during the set operation of the packaging machine is stored in the control circuit 33, and the stored home position data and the pulse signal from the encoder E are stored during the operation. By End Sealer 1
It is configured to determine the current position of 3,13.

A mounting member 34 protruding toward the film feed path is disposed below the position where the end sealer 13 is disposed in each slider 18, and a film presser 36 as a film holding means is attached to the mounting member 34. It is slidably mounted in the movement direction. As shown in FIG. 3, a compression spring 3 is provided between the mounting member 34 and the film retainer 36.
7, 37 are elastically inserted, and the elasticity of the springs 37, 37 urges the film retainer 36 toward the film feeding side so that the front surface of the film retainer 36 is always in the end sealer 1 position.
3 is set so as to protrude from the front surface toward the film feeding path side. On the front surface of the film retainer 36, a protrusion 36a is provided at a central portion in the longitudinal direction thereof.
a, 36a are configured to hold the central portion in the width direction of the bag-like film 12. That is, the end sealer 13,
13 before they engage each other in close proximity to each other,
The protrusions 36a of the film retainers 36, 36 hold the central portion in the width direction of the bag-like film 12. When the end sealers 13 and 13 are separated from each other, the end sealer 1
When the members 3 and 13 are separated from the film by a predetermined distance, the protrusions 36a and 36a are separated from each other to release the holding of the film.

Below the end sealers 13, 13, an air venting means 38 for discharging the internal air of the bag-like film 12 filled with the article to be packaged is provided. That is, as shown in FIG. 2, the air cylinders 3 are mounted on the device frames 20, 20, which face each other in the opening and closing directions of the end sealers 13, 13 with the film feeding path of the end seal device 11 interposed therebetween.
9, 39 are provided to face each other. An air bleeding member 40 is provided on a piston rod 39a of each air cylinder 39 which faces the other air cylinder 39. The air bleeding members 40 and 40 are urged synchronously to urge the air bleeding members 40 and 40. They are moved closer and further away from each other. When the air release members 40 and 40 approach each other, the air release members 40 and 40 function to press the bag-like film 12 and discharge air inside the bag. The arrangement position of the air release members 40, 40 is determined by a narrowing means 74 described later.
Is set at a position where the portion to be squeezed and pinched of the bag-shaped film 12 is pressed flat.

One air release member 40 is made of a material having elasticity such as sponge, and the other air release member 40 can be made of a synthetic resin, rubber, or the like, and can follow the bag-like film 12. It is formed of a material having a high flexibility. Further, both members 40, 40 are wider than the width of the bag-shaped film 12, and have a length reaching from the immediately below the end sealer 13 to the vicinity of the uppermost portion of the packaged material filled in the bag-shaped film 12, and The bag-like film 12
Is configured to be able to be pressed over a certain range (area) without damage. Further, the air bleeding means 38 operates the air bleeding members 40 and 40 in proximity to each other at a timing before the end sealers 13 and 13 mesh with each other after the bag-shaped film 12 is filled with the packaged material, and the end sealer 1.
The air bleeding members 40, 40 are set to be separated from each other before the members 3, 13 are engaged with each other (see FIG. 20).

Below the air release means 38, FIG.
As shown in the figure, a pair of slide shafts 4 are separated in the left-right direction intersecting the opening / closing direction of the end sealers 13, 13.
1, 41 are arranged vertically, and both slide shafts 41, 4
1, a slide block 42 is disposed slidably up and down. A piston rod 73a of an air cylinder 73 is connected to the lower surface of the slide block 42, and the slide block 42 moves up and down between a lowered position and a raised position by urging the cylinder 73 in the forward and reverse directions. It is configured as follows.

A pair of vertically spaced guide shafts 43 are inserted horizontally through the slide block 42 so as to be slidable in the left-right direction. Support plates 44 are respectively provided on both shaft ends of both guide shafts 43, 43, and a piston rod 45a of an air cylinder 45 as a lateral moving means horizontally fixed to the slide block 42 is attached to one support plate 44. Connected. Therefore,
When the air cylinder 45 is urged in the forward and reverse directions, the holding frame 46 including the guide shafts 43, 43 and the support plates 44, 44 moves laterally with respect to the slide block 42 in the left-right direction.

At the upper part of the holding frame 46, the narrowing portion to be narrowed and pressed by the air venting means 38 in the bag-like film 12 hanging down below the end sealers 13, 13 is narrowed down in the flat direction. There is provided a narrowing-down means 74 for holding the same. That is, a pair of guide shafts 47, 47 which are separated from each other in the front and rear direction are horizontally installed between facing surfaces of the holding frames 46, which extend upward from the slide blocks 42 of the support plates 44, 44. , Three slide blocks 48, 49, 50 are slidably disposed respectively. The first slide block 48 located at the center is provided with a mounting plate 51 extending upward by a required length, and a first sandwiching means is formed above the mounting plate 51 by being vertically separated by a predetermined distance. The first film holding claws 52 and 53 are horizontally disposed. As shown in FIG. 6, V-shaped aperture holding pieces 52c, 53c are formed on both left and right sides of the upper first film holding claw 52 and the lower first film holding claw 53, respectively. The second slide blocks 49, 5 located on the left and right
In FIG. 2, mounting plates 51 extending upward by a required length are respectively disposed, and a second film pinching claw 54 constituting a second pinching means is provided above and below each of the mounting plates 51 with a predetermined vertical interval. ,
55 are arranged horizontally, respectively. Each of the upper and lower second film sandwiching claws 54, 55 is formed with a V-shaped aperture sandwiching piece 54c, 55c that opens to the side facing the first film sandwiching claws 52, 53, respectively. The first film pinching claws 52 and 53 and the second film pinching claws 54 and 55 are such that the upper second film pinching tab 54 faces the upper first film pinching tab 52 and the lower first film pinching tab 53. The lower second film sandwiching claw 55 is positioned so as to face the lower side, and is set so as not to interfere with each other.
That is, when the first film pinching claws 52, 53 and the second film pinching claws 54, 55 are brought close to each other by a mechanism described later, the upper pinching claws 52, 54 and the lower pinching claws 53, 55 become The upper and lower portions are vertically overlapped with each other, and are squeezed from the width direction toward the center at two places vertically separated from the bag-like film 12 by the opposed squeezing holding pieces 52c and 54c and the squeezing and holding pieces 53c and 55c. (Figure 1
4).

The film holding claws 52, 53, 54, 55 of the squeezing means 74 urge the air cylinder 73 disposed on the slide block 42 to move the block 42 to the raised position. As shown in FIG. 14, the bag-shaped film 12 is set so as to reach a position where the portion to be squeezed to be squeezed and pressed by the air bleeding means 38 can be squeezed. Then, the narrow pressing position of the bag-like film 12 is narrowed and pinched by the film-clamping claws 52, 53, 54, 55, so that a good narrowing can be achieved. When the slide block 42 is moved to the lowering position, the film sandwiching claws 52, 53, 54, 55 are moved to the end sealers 13, 13 as shown in FIG.
Is lowered by a required distance from the disposition position, so that the next tubular film can be fed, and the pressing operation of the air release means 38 on the next squeezing and holding portion of the bag-like film 12 is allowed. It is configured.

At a required position of the guide shafts 47, 47, a pinion 57 is rotatably supported via a bracket 56. As shown in FIG.
A first rack 58 disposed on the first slide block 48 and extending in parallel with the guide shaft 47 meshes.
A second rack 59 is provided between the second slide blocks 49 and 50 on the opposite side of the first rack 58 with the pinion 57 interposed therebetween, and the second rack 59 meshes with the pinion 57. Further, an air cylinder 60 as a driving means is horizontally disposed on the one support plate 44, and its piston rod 60 a is connected to the first slide block 48. That is, when the air cylinder 60 is urged in the forward and reverse directions, the first
In conjunction with the horizontal movement of the slide block 48 in the left-right direction, the two second slide blocks 49 and 50 move horizontally in the direction opposite to the first slide block 48 integrally.
For example, when the first slide block 48 is moved rightward as shown in FIG.
0 moves to the left. At this time, the squeezing pieces 54c, 55c of the right second film pinching claws 54, 55 and the right squeezing pieces 52c, 53c of the first film pinching claws 52, 53 form a bag. The film 12 is narrowed down and clamped. When the first slide block 48 is moved to the left as shown in FIG. 8, the second slide blocks 49 and 50 move to the right.
Squeeze holding pieces 54c, 5 in film holding claws 54, 55
The bag-like film 12 is squeezed and held by the left and right squeezing holding pieces 52c and 53c of the first film holding claws 52 and 53.

It should be noted that one of the second film sandwiching claws 54, 5
The film feeding path is fed to the opposing portions of the first film pinching claws 52 and 53 that narrow and pinch the bag-shaped film 12 in proximity to 5 and the other second film pinching claws 54 and 55. A space W that allows the bag-like film 12 to pass through is defined. The stroke of the air cylinder 45 for moving the holding frame 46 laterally was narrowed and pinched by the first film pinching claws 52 and 53 and one of the second film pinching claws 54 and 55 at the center of the feeding path of the bag-like film 12. The bag-like film 12 is connected to a tape tying device 6 described later.
3, 63, and the first film pinching claws 52, 5
3 and the other second film pinching claws 54 and 55 which are separated from
Is set to be moved to a position corresponding to the film feed path (see FIGS. 9 and 15).

Here, the upper first film pinching claw 52
As shown in FIG. 6, the V-shaped grooves of the right and left aperture holding pieces 52c, 52c are respectively composed of a narrowing-in introduction section 52a on the expansion side and a holding section 52b on the convergence side.
a, opening angle alpha ₂ of 52b are set to the same. On the other hand, the left and right aperture clamping pieces 53c, 53c of the lower first film clamping claw 53 have V-shaped grooves each composed of a narrowing-in introduction section 53a on the expanding side and a clamping section 53b on the converging side. with the opening angle of the parts 53b is set to be the same as the opening angle alpha ₂ of the clamping portion 52b in the upper portion of the diaphragm holding pieces 52c, the opening angle of the narrowing inlet section 53a alpha ₁
Is a narrowing-in introduction portion 5 in the upper narrowing holding piece 52c.
2a is set angle of opening alpha ₂ larger as than. Similarly, in the second film pinching claws 54, 55, the V-shaped groove of the squeezing piece 54c in the upper second film pinching claw 54 is composed of a squeezing introduction part 54a on the expanding side and a nip part 54b on the converging side. And both parts 54
a, opening angle alpha ₂ of 54b are set to the same, the lower second film sandwiched V-shaped groove in the diaphragm holding pieces 55c of pawl 55 and the narrowing inlet part 55a of the opening拡側convergence side holding portion 55b
Together composed of the open angle of the clamping portion 55b is set to be the same as the opening angle alpha ₂ of the clamping portion 54b in the upper portion of the diaphragm holding pieces 54c, aperture opening angle alpha ₁ of the narrowing inlet part 55a of the upper clamping piece It is set to be larger than the opening angle α ₂ of the narrowing-in introduction portion 54a at 54c. That is, the upper and lower film sandwiching claws 52, 53, 5
By setting the holding portions 52b, 53b, 54b, and 55b at the same open angle α2 at ₄ , 55, the bag-like film 12
Can be transported laterally while being securely pinched. Further, the narrowing-in introduction section 52 in the upper film sandwiching claws 52, 54
Since a and 54a are set to be sandwiched with respect to the narrowing-in introduction portions 53a and 55a of the lower film sandwiching claws 53 and 55, the bag-shaped film held by the film pressers 36 and 36 and formed into a substantially flat shape. Twelve narrowing portions to be held are restrained from being twisted or distorted by holding portions 52b, 53b,
The guide can be narrowed down to 54b and 55b. Further, the narrowing-in introduction parts 52a, 52a,
Refine inlet portion 53a in the lower portion of the film pinching member 53, 55 relative to 54a, because the larger the 55a opening angle alpha ₁ of, when Filter bag-shaped film 12, inflated by the filling of the articles to be packaged in the film 12 It is possible to effectively prevent a pinhole from being generated by hooking the tip of the lower pinching claws 53, 55 on the portion where the pinch is located.

On the front surface of the slide block 42, a pair of inverted L-shaped support members 61, 61 which are separated to the left and right,
The tape bundling device 63 is disposed and fixed via shafts 62, 62, and is attached to the upper horizontal portion 61 a of each support member 61.
Are detachably attached. Note that since the configurations of the tape bundling devices 63, 63 disposed on the left and right are symmetric, only the configuration of the bundling device 63 located on the right side of FIG. 5 will be described, and the same members of the other bundling device 63 will be the same. A code shall be attached.

On a horizontal support plate 65 attached to the support member 61, an auxiliary plate 66 is disposed in parallel at a predetermined interval above and at a position facing the right side of the film feed path. The slits 65a, 66a are formed in the 65, 66 and open to the side of the feeding path that allows the bag-like film 12 to enter. The support plate 65 and the auxiliary plate 66 are
It is positioned so as to face between the upper and lower first film sandwiching claws 52, 53 which have moved laterally, and the slits 65a,
Reference numeral 66a is set to be aligned on a line intersecting the center of the film feeding path. That is, the first film pinching claws 52, 53 and the second film pinching claws 54, 55, which squeeze and hold the bag-shaped film 12, are moved rightward from the film feeding path, so that the pinching claws 52, 53, 5
The film narrowing portion facing between the upper film sandwiching claws 52, 54 and the lower film sandwiching claws 53, 55 is introduced into the slits 65a, 66a without the 4, 55 interfering with the support plate 65 and the auxiliary plate 66. It has become.

As shown in FIG. 5, a tape roll 68 around which a tape 67 is wound is provided on the support plate 65 at a position away from the slit 65a at a position where the slit 65a is formed. Further, between the support plate 65 and the auxiliary plate 66, a tape holding member 69 is disposed near the open ends of the slits 65a and 66a, and the tape 67 pulled out from the tape roll 68 by the holding member 69 is used. The attachment surface is configured to be held in a state facing the open end side of the slits 65a and 66a. That is, the first film pinching claws 52 and 53 and the second film pinching claws 54 and 55
Moves laterally to the right from the center of the film feeding path, so that the narrowed portions of the bag-like film 12 narrowed by the pinching claws 52, 53, 54, 55 are slits 65a, 66a of the support plate 65 and the auxiliary plate 66. And the tape 67 is stuck. Then, the first film pinching claws 52 and 53 and the second film pinching claws 54 and 55 further laterally move to the right, so that the tape 67 is pulled out from the tape roll 68 and extends all around the narrowed portion of the film 12. They are wound and adhered (see FIGS. 15 and 16).

A knife holding member 70 is pivotally supported on the right side of the arrangement position of the tape holding member 69 between the support plate 65 and the auxiliary plate 66 (the side separated from the film feeding path) so as to be horizontally rotatable. The holding member 70 has slits 65a,
A knife 71 pointing to 66a is provided. The knife 71 is activated when the narrowed portion of the bag-like film 12 on which the tape 67 is wound and adhered passes through the position where the tape holding member 69 is provided and passes through the position where the knife holding member 70 is provided. Slits 65a, 66 on the left side
a so as to cut the tape 67. The support plate 65 and the auxiliary plate 66 have large-diameter openings 65b communicating with the right ends of the slits 65a, 66a.
When the bag-like film 12 reaches the positions of the openings 65b, 66b, the bag-like film 12 is allowed to fall. A chute 72 inclined forward is provided immediately below the openings 65b and 66b, as shown in FIG.
The bag-like film 12 that has fallen from is discharged to the front of the apparatus.

[0032]

Next, the operation of the tape binding apparatus according to the embodiment will be described with reference to FIG.
This will be described with reference to the timing chart of FIG. In the initial state of the tape binding device 10, as shown in FIG.
It is assumed that the film sandwiching claws 52, 53 are separated from the right second film sandwiching claws 54, 55, and the space W defined therebetween is located in the film feeding path. The slide block 42 is waiting at the lowered position as shown in FIG. Further, the pair of end sealers 13, 1
3 and the air release members 40 and 4 of the air release means 38
No. 0 stands by in a state where the bag-like film 12 is allowed to pass away from each other.

In this state, the article to be packaged is filled toward the bag-like film 12 whose lower end is sealed, so that an article filling signal is input, and the bag-like film 12 is intermittently fed downward by one packing length. At the same time, the servo motor SM starts to be driven in accordance with the timing at which the package falls to the bottom of the bag-like film 12, whereby the toggle mechanism 14 operates to close the end sealers 13, 13. Is started. Also, before the end sealers 13, 13 engage,
The air cylinders 39, 39 of the air release means 38 are urged, and the opposing air release members 40, 40 press the portions to be squeezed and pinched of the bag-like film 12 at the timing after the intermittent feeding stop of the film. The air in the bag is exhausted. Note that, due to the pressing by the air release members 40, 40, the portion to be narrowed down and held of the film 12 becomes flat along the width direction. In addition, the air release means 38
At about the same time when the air cylinders 39, 39 are urged, the air cylinder 73 is urged to raise the slide block 42 from the lowered position (see FIG. 12).

Before the end sealers 13 and 13 closed by the toggle mechanism 14 engage with each other, as shown in FIG. 17, the projections 36a and 36a of the film retainers 36 and 36 hold the central portion of the bag-like film 12. . End sealer 1
When the film holders 3 and 13 are further closed, the film retainers 36 and 36 are retracted toward the mounting members 34 and 34 against the elasticity of the compression springs 37 and 37 while holding the film 12 by the protrusions 36a and 36a. Thereafter, the end sealers 13 and 13 are engaged with each other with the bag-like film
Is subjected to end sealing and cutting (see FIG. 11). The air release members 40, 4 of the air release means 38
0 starts separation before the end sealers 13 and 13 mesh with each other (see FIG. 18). In addition, the slide block 42 has reached the ascending position before the end sealers 13, 13 mesh with each other.

Further, based on a position signal from an encoder E attached to the servomotor SM, the control circuit 33 transmits the end sealers 13 and 13 at a timing when the end sealers 13 and 13 reach a predetermined closing position before engagement. An urging command is issued to the air cylinder 60, and as shown in FIGS. 13 and 14, the first film pinching claws 52 and 53 are moved toward the center (right side) of the film feeding path. Accordingly, under the action of the first rack 58, the pinion 57, and the second rack 59, the right second film pinching claws 54, 55
Is moved toward the center (left side) of the film feeding path, and the substantially flat bag-shaped film 12 is provided with four upper and lower pinching claws 5.
The aperture is narrowed down in the flat direction by 2,54,53,55.
Since the left second film pinching claws 54 and 55 move to the left integrally with the right second film pinching claws 54 and 55, the left second film pinching claws 54 and 55 and the first film pinching claws 54 and 55 move together. A space W is defined between the pinching claws 52 and 53 so as to correspond to an interval at which the feeding of the tubular film is allowed.
Further, the narrowing of the bag-shaped film 12 by the two film sandwiching claws 52, 54, 53, 55 is performed by the end sealer 13,
13 has just opened and the film presser 36, 36
This is performed when the central portion in the film width direction is held by the protrusions 36a, 36a in the above. Thereby, the fan shape of the bag ear formed above the binding portion of the packaged bag-like film 12 can be made a clean fan shape without twisting, distortion, or the like.

Here, since the portion to be squeezed and squeezed of the bag-like film 12 is previously flattened by the air venting means 38, the film 1
2 can be narrowed down without difficulty. In addition, since the opening angles of the narrowing-in introduction portions 53a and 55a of the lower claws 53 and 55 in the first film claws 52 and 53 and the second film claws 54 and 55 are set to be large, filling of the packaged object is performed. As a result, good narrowing can be achieved without the tip of the claw catching on the center seal portion of the swelled bag-like film 12. Even when the gusset is formed on the side of the bag, it is possible to effectively prevent the claw tips of the lower film sandwiching claws 53 and 55 from being hooked on the gusset forming portion. Furthermore, the film at the upper end where the film 12 is flattened by the engagement of the end sealers 13 and 13
(The film located above the pinching claws) is guided by the film pinching claws 52, 54 whose narrowing-in introduction portions 52a, 54a are set to be narrow, so that it is combined with the opening timing of the film pressers 36, 36 described above. Thus, the fan shape of the bag ear formed above the binding portion of the packaged bag-like film 12 can be made a beautiful fan shape without twisting or distortion.

The first film sandwiching claws 52, 53 and the second
At the timing when the bag-shaped film 12 is squeezed and pinched by the film pinching claws 54 and 55, as shown in FIGS. 15 and 16, the holding frame 46 is moved rightward by the bias of the air cylinder 45 and the air Cylinder 73
Is reversely urged to lower the slide block 42 from the raised position. The lateral movement of the holding frame 46 causes the bag-like film 12 squeezed and pinched by the first film pinching claws 52 and 53 and the second film pinching claws 54 and 55 to move toward the right tape tying unit 63 and move upward. Film pinching claw 5
The narrowed-down portion of the bag-like film 12 between the second film 54 and the lower film sandwiching claws 53 and 55 is bound by tape. That is, as the holding frame 46 moves to the right, the film narrowing portion enters the slits 65a and 66a of the support plate 65 and the auxiliary plate 66, and the tape 67 previously held by the tape holding member 69 is attached. . And holding frame 4
6 is further moved to the right so that the tape 67 is pulled out from the tape roll 68 and is wound and adhered to the entire periphery of the film narrowing portion, and the knife 71 is operated to connect the tape on the side connected to the tape roll 68. 67 is cut.
In addition, the holding frame 46 (film pinching claws 52, 53, 54, 5)
Before the lateral movement of 5) is completed, the feeding of the next tubular film is started to cope with high speed (FIG. 2).
0).

When the bag-like film 12 bound with the tape arrives at the openings 65b, 66b of the support plate 65 and the auxiliary plate 66, the second film sandwiching claws 54, 5 on the left side.
The space W defined between 5 and the first film sandwiching claws 52 and 53 is located in the film feeding path. That is, the film pinching claws 52, 53, 54, 55
The lower end of the film is held at the lower end of the film even when the next film feeding is started before the lateral movement of the film sandwiching claws 52, 53, 54, 55 is completed. Film feed is not hindered by contacting the film 52, 53, 54, 55, the start of the next film feed can be set quickly, and the cycle time can be shortened. The next bag-like film 12 is fed downward through the space W.

When the next bag-like film 12 filled with the object to be packaged is fed between the first film pinching claws 52, 53 and the left second film pinching claws 54, 55, the above-described operation is performed. As described above, the driving of the servo motor SM is started and the air bleeding means 38 is operated, and the end seal device 11 seals the bag-like film 12 from which the air in the bag is discharged. Further, after the slide block 42 reaches the ascending position, the air cylinder 60 is reversely urged, and the first film pinching claws 52, 53 move to the left, so that the right second film pinching claws 54, 55 is released, and the tape tying unit 63 on the right side is released.
The bag-shaped film 12 located at the opening 65
b, 66b falls on the chute 72. The left second film pinching claws 54, 55 are relatively close to the first film pinching claws 52, 53, and the next bag-like film 12 is narrowed and pinched. The holding frame 46 is moved to the left by the reverse bias of the air cylinder 45, and the slide block 42 is lowered to the lowered position, so that the left second film pinching claws 54, 55 and the first film pinching claws 5
The bag-like film 12 narrowed and pinched by 2,53
Are bound by the tape binder 63 on the left side.

The present invention is not limited to the configuration of the embodiment, and other modifications can be adopted. (1) For example, as for the air bleeding means, a motor or a cam lever system can be used instead of the air cylinder as the driving means of the air bleeding member. Alternatively, the air may be released by pressing from the outside of the bag at the position where the packaged object is filled by the air release member. (2) The film holding means for pressing and holding the widthwise central portion of the bag-shaped film immediately below the end sealer is driven separately from the end sealer by an air cylinder drive, a motor drive, which operates in synchronization with the opening and closing operation of the end sealer, Various types, such as a cam lever, may be used. (3) The driving means of the film pinching claw, the lateral moving means of the film pinching claw (narrowing means) holding the film, and the elevating means of the film pinching claw holding the film are each driven by a motor instead of the air cylinder driving method. Each driving method such as a cam lever method can be adopted. (4) Regarding the first pinching means of the squeezing means, instead of forming the nip pieces on both the left and right sides of one film pinching claw, a pair of film pinches having the nip pieces on one of the left and right sides It is possible to adopt a configuration in which the claws are positioned in a state where the squeezing and holding pieces are separated from each other, and the two film-clamping claws are horizontally moved in the left-right direction integrally. (5) The opening and closing drive of the end sealer may be a cam lever drive or an air cylinder drive instead of the servo motor drive. Also, regarding the format of the end sealer,
The upper part of the bag formed after sealing is made unsealed by making the lower part of the two sealing surfaces provided at the upper and lower positions sandwiching the cutter arrangement position a film holding surface that does not transmit heat. There may be. (6) The position detecting means for detecting the position when the end sealer closes is not an encoder attached to the servomotor,
An encoder provided in another drive system of the end seal device may be used. Further, as the position detecting means, one having a configuration such as a combination of a slit disk and a photoelectric sensor can be adopted. Further, instead of the encoder, photoelectric sensors 76 and 76 indicated by a two-dot chain line in FIG. 3 and other proximity sensors can be employed.

[0041]

As described above, according to the tape bundling method and apparatus according to the present invention, the opening angle of the film squeezing introduction portion at the lower film sandwiching claw is set to the opening angle of the film squeezing introduction portion at the upper film sandwiching claw. Because the angle is set to be larger than the angle, the flat film sandwiched by the end sealer can narrow down the flat film by suppressing twisting and bending distortion, etc.
In addition, the lower film pinching claw can prevent pinholes of the film caused by hooking the claw tip on a center seal portion or a gusset forming portion formed on the film, and can achieve good narrowing. Further, by moving the film-holding claw straight from the side of the film feeding path toward the center, the film hooking at the claw tip is eliminated, and the occurrence of pinholes can be reliably prevented.

Since the portion to be squeezed and held by the film-clamping claw is flatly pressed in advance by the air bleeding means, the film can be squeezed reliably and satisfactorily. Further, since the narrowing is performed while the end sealer is opened and the central portion of the bag-shaped film is held, a fan-shaped shape is formed clearly above the binding position, and the commercial value can be increased. Furthermore, by detecting the operation position of the end sealer by the position detection means and controlling the operation of the film pinching claw, timing accuracy is improved as compared with the case where the operation is controlled by a timer or a control clock pulse of a packaging machine, It becomes possible to form the bag ear portion above the tape binding position into a more beautiful fan shape.

After the film is cut and sealed, the film pinching claw is moved laterally to a position where the next film feeding is not hindered, so that the film can be fed quickly to the next packaged object and the cycle time can be reduced. It can be set to a shorter value to respond to higher speeds. Further, by lowering the film-holding claw holding the bag-like film while moving it laterally, the next film feeding can be started more quickly, and further higher speed can be achieved.

Since the tape bundling device is provided below the end seal device, it can be installed in the same installation space as the vertical bag making and filling machine without the device of the present invention. In addition, since two tape bundling units are provided on the left and right sides of the film feeding path, the speed of packaging can be increased without increasing the size of the apparatus. In addition, since the tape binding of the bag-shaped film sandwiched by the film pinching claws can be performed at a position where the film feeding is not hindered, the tape binding is performed by holding the film pinching claws at the position. Even if there is no specification, it can be used with the device of the present invention installed.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a main part of a vertical bag making and filling machine employing a tape binding device according to an embodiment.

FIG. 2 is a schematic side view showing a main part of a vertical bag making and filling machine employing a tape binding device according to an embodiment.

FIG. 3 is a schematic plan view mainly showing an end seal device of a vertical bag making and filling machine employing a tape binding device according to an embodiment.

FIG. 4 is a schematic front view of the tape binding device according to the embodiment.

FIG. 5 is a schematic plan view of the tape binding device according to the embodiment.

FIG. 6 is a plan view showing narrowing means.

FIG. 7 is a plan view showing the squeezing means in a state where a first film pinching claw and a right second film pinching claw are brought close to each other.

FIG. 8 is a plan view showing the squeezing means in a state where a first film pinching claw and a left second film pinching claw are brought close to each other.

FIG. 9 is an explanatory plan view showing an initial state in which a bag-like film is tape-bound by a tape-binding device.

10 is an explanatory side view of the tape binding device corresponding to FIG.

FIG. 11 is an explanatory plan view showing a state in which the bag-like film is sealed with an end sealer.

12 is an explanatory side view of the tape binding device corresponding to FIG.

FIG. 13 is an explanatory plan view showing a state in which the upper portion of the bag-shaped film is narrowed down and clamped by a first film clamping claw and a right second film clamping claw.

14 is an explanatory front view of the tape binding device corresponding to FIG.

FIG. 15 is an explanatory plan view showing a state in which a bag-shaped film sandwiched between a pair of film sandwiching claws is tape-bound by a right-side tape binding device.

16 is an explanatory front view of the tape binding device corresponding to FIG.

FIG. 17 is an operation explanatory view of an end sealer, a film presser, and an air release member.

FIG. 18 is an operation explanatory view of an end sealer, a film presser, and an air release member.

FIG. 19 is a control block diagram of an end seal device and a tape binding device.

FIG. 20 is a timing chart of the end seal device and the tape binding device.

[Explanation of symbols]

Reference Signs List 12 bag-like film 13 end sealer 33 control circuit 36 film presser (film holding means) 38 air release means 45 air cylinder (lateral moving means) 52 upper first film pinching claw (first pinching means) 52a narrowing-in introduction section 53 lower first section 1 film pinching claw (first pinching means) 53a squeezing and introducing section 54 upper second film pinching claw (second pinching means) 54a squeezing and introducing section 55 lower second film pinching claw (second pinching means) 55a squeezing and introducing section 60 air Cylinder (driving means) 63 Tape bundling device 73 Air cylinder (elevating means) 74 Narrowing means 76 Photoelectric sensor (Position detecting means) E Encoder (Position detecting means) α ₁ Opening angle of film narrowing introduction part at lower film pinching claw α ₂ Opening angle of film squeezing introduction part at upper film pinching claw

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65B 51/00-51/32 B65B 9/00-9/24

Claims (11)

(57) [Claims] 1. A pair of end sealers (13, 1) that move horizontally opposite to each other across a film feeding path in a vertical bag making and filling machine.
In the tape bundling device provided below 3), the end sealer (13,1) after stopping intermittent feeding of the bag-like film (12), the lower end of which is fed through the film feeding path, is sealed.
Prior to the meshing of 3), the portion to be squeezed and pinched of the film (12) is pressed flat in the same direction as the opening and closing direction of the end sealer (13, 13) to release air in the bag, and the end sealer (13, 13) when the sealer (1
The central portion of the bag-like film (12) is held immediately below the disposition position of (3, 13), and the end sealer (13, 13) is pressed at the timing of meshing with the bag-like film (12). When the end sealer (13, 13) is in the meshing state, the flattened narrowing and holding planned portion of the bag-like film (12) is moved in the opening and closing direction of the end sealer (13, 13). A pair of upper and lower film pinching claws (52, 53, 54, 5
5) is horizontally moved to start narrowing of the bag-like film (12), and in the middle of the narrowing, the opening of the end sealers (13, 13) is started while the upper central portion of the bag is held, and the bag-like film (12) is opened. Upon completion of narrowing down the film (12), the film
After the (12a) is pinched by the film pinching claws (52, 53, 54, 55), the holding of the upper center portion of the bag is released, and the film pinching claws (52, 53, 54, 55) are (1
While holding (2), the film is moved laterally to one of the left and right positions of the film feeding path which does not hinder the next film feeding, and in the process of moving the pinching claws (52, 53, 54, 55). The upper and lower film pinching claws (5
2. A tape binding method, wherein a tape is bound to a bag-like film (12) between 2,53,54,55). 2. At the same time as the film pinching claws (52, 53, 54, 55) that pinch the bag-like film (12) move laterally, the pinching claws (52, 53, 54, 55). 2. The method according to claim 1, wherein the lowering is performed. 3. A pair of end sealers (13, 1) that move horizontally and opposed to each other across a film feeding path in a vertical bag making and filling machine.
3) a tape bundling device provided below, wherein the lower end of the tape feeding path is moved by facing the film feeding path in the left-right direction crossing the opening and closing direction of the end sealer (13, 13). Squeezes and seals the sealed bag-like film (12), and, in the sandwiched state, performs a tape tying operation on the film squeezing portion by the tape tying device (63). , 53, 54, 55), and a film formed so as to open to a side of the lower film pinching claws (53, 55) facing the other pair of film pinching claws (55, 53). The opening angle (α ₁ ) of the narrowing-in introduction part (53a, 55a) is set to be larger than the opening angle (α ₂ ) of the film narrowing-in introduction part (52a, 54a) in the upper film pinching claw (52, 54). A tape binding device. 4. A pair of end sealers (13, 1) that move horizontally and opposed to each other across a film feeding path in a vertical bag making and filling machine.
A tape bundling device provided below 3), which is actuated before an end seal is applied to the cylindrical film on the film feed path, and hangs down below the end sealer (13, 13). Air release means (38) for releasing the air in the bag by pressing the bag-like film (12) whose lower end is sealed
And, opposite to the opening and closing direction of the end sealer (13, 13) sandwiching the bag-shaped film (12a) that is held at the lower part of the end sealer (13, 13) and intersect, the film moves oppositely
(12) A pair of film pinching claws (52, 54/5
Squeezing means (74) provided with a pair of film pinching claws that pinch the bag-shaped film (12).
(52, 54/53, 55), a lateral moving means (45) for laterally moving the film feeding path to the right or left side integrally, and a lateral movement of the film pinching claws (52, 54/53, 55). A tape is wound around a bag-like film (12) which is disposed on each of the right side and the left side of the film feeding path in the path and narrowed down and held by the film holding claws (52, 54/53, 55). A tape bundling device comprising a base tape bundling means (63, 63). 5. The air venting means (38) is set so as to be able to press a portion of the bag-shaped film (12) to be narrowed and pinched by the film pinching claws (52, 54/53, 55). Tape binding device. 6. The holding of the bag-like film (12) at the lower part of the end sealer (13, 13) is performed by pressing and holding the central part in the width direction of the film (12a) immediately below the end sealer (13, 13). This is performed by the film holding means (36, 36).
6) before the end sealer (13, 13)
The tape bundling device according to claim 4, wherein the tape bundling device is set so as to release the holding of the bag-like film after holding the end sealer and moving the end sealer toward the open position. 7. An elevating means (73) for elevating and lowering the film pinching claws (52, 54/53, 55), wherein the lowering of the film pinching claws (52, 54/53, 55) is performed at a raised position. 53, 55) are set at the same time as the lateral movement of the film pinching claws (52, 54/53, 55) by the lateral moving means (45) after the bag-like film (12) is clamped. 7. The tape binding device according to any one of 6. 8. The squeezing means (74) has squeezing pieces (52c / 53c) on both left and right sides, and a first squeezing means (52, / 53) at a central position capable of horizontal movement in the left-right direction. , The central first
Each of the left and right sides is set so as to be horizontally movable relative to the sandwiching means (52, / 53) and has a diaphragm sandwiching piece (54c / 55c) on the side facing the first sandwiching means (52, / 53). Second pinching means (54/55)
The tape binding device according to any one of claims 4 to 7, comprising: 9. A pair of end sealers (13, 1) that move horizontally opposite to each other across a film feeding path in a vertical bag making and filling machine.
3) A tape bundling device provided below the sealer (13, 13) before the end sealer (13, 13) is closed.
An air bleeding means (38) whose operation is controlled so as to press a sealed bag-like film (12) with a filled lower end of an article to be packaged located below, and an opening / closing direction of the end sealers (13, 13). Is disposed so as to be able to move in the left and right direction intersecting with the end sealer (13, 13). 12), a pair of film pinching claws (52, 54/53, 55) for pinching the film at the center of the film feeding path, and an end sealer immediately below the end sealer (13, 13).
Before (13,13) is closed, until the film-clamping claws (52,54 / 53,55) hold the bag-like film (12), the film (12)
End sealer (13,1
Film holding means (36) that operates in conjunction with the opening / closing operation of (3)
A driving unit (60) for moving the pair of film pinching claws (52, 54/53, 55) to face each other, and a position detecting unit (E) for detecting a position when the end sealer (13, 13) is closed. Receiving means for receiving a signal from the position detecting means (E) of the end sealer (13, 13), and driving means for the film pinching claws (52, 54/53, 55)
And a control means (33) for operating (60). 10. A position detecting means for detecting a position when the end sealer (13, 13) closes, wherein the end sealer (13, 1)
The tape bundling device according to claim 9, which is a pulse signal transmitter (E) disposed in the drive system of (3). 11. A position detecting means for detecting a position at which the end sealer (13, 13) closes, the end sealer (13, 1).
10. A sensor provided in the opposing moving section of (3) for detecting that the sealer (13, 13) has reached a predetermined closed position.
The tape bundling device according to the above.