JP2023169811A - Article pressing device of horizontal bag making and filling machine - Google Patents

Abstract

To provide an article pressing device for a horizontal bag making and filling machine that can effectively support the upper part of an article without expanding the unsupported area of the tubular packaging material from the pressing means to the horizontal sealing position, even in a horizontal bag making and filling machine that employs a box motion type horizontal sealing device.SOLUTION: A slide base 31 is supported on a support base 30 so as to be slidable back and forth in a film transport direction. The slide base 31 is coupled to a movable frame 21 of a transfer conveyor 13 that moves back and forth in the film transfer direction correspondingly to opening and closing movement of an uppermost pair of sealing bodies 15,16. Pressing means 27 comprising article pushers 59 disposed at predetermined intervals on an endless belt 56 are arranged on the slide base 31. The article pushers 59 supporting an article 11 in a tubular film 10 from above, move in the film transport direction at a speed synchronized with a film transport speed when the slide base 31 moves back and forth in the film transport direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to an article holding device that presses and conveys an article fed into a cylindrical packaging material from above in a horizontal bag-forming-filling machine.

In packaging machines such as horizontal bag-forming-filling machines, the film (packaging material) that is pulled out from a roll of material and guided by a bag-forming means is formed into a cylindrical shape with both edges in the width direction overlapped in a clasped shape. , At the same time, a vertical seal is applied to the overlapping part in the direction of film transport, and a horizontal seal is applied by a horizontal sealing device to cross the transport direction at the front and back positions of each article fed at predetermined intervals into the cylindrical film. We are getting pillow packaging products. In addition, in the packaging machine, between the bag making means and the horizontal sealing device, a comb tooth section in which a plurality of teeth made of silicone rubber are lined up in the width direction is provided as an endless cord in a predetermined range in the transport direction of the cylindrical film. A pressing means is provided in which comb teeth are arranged at predetermined intervals in the running direction of the endless cable body so as to protrude outside the body, and the article in the cylindrical film is supported from above by the pressing means for horizontal sealing. By feeding the film toward the horizontal sealing position in the device, disturbances in the conveying posture of the product and misalignment of the product are prevented, and excess air in the cylindrical film is eliminated (for example, Patent Documents 1 and 2). reference).

Patent No. 5342494 Japanese Patent Application Publication No. 2018-100120

When a cylindrical film is horizontally sealed, as the cylindrical film is narrowed vertically, the product may be pushed back upstream during conveyance, or when multiple products are packaged as a set, the condition of the assembled state may be affected. It is desirable that the articles be supported from above by the holding means close to the horizontal sealing position so that the posture of the articles and the state of collection are not disturbed.

As disclosed in Patent Documents 1 and 2, in a rotary horizontal sealing device in which the horizontal sealing position does not change in the film transport direction and in which a pair of sealing bodies are rotated in opposite directions to perform horizontal sealing, a presser means is used. It is possible to arrange the pressing means so that the support position is close to the horizontal sealing position. However, in a so-called box motion horizontal sealing device in which the cylindrical film is held between sealing bodies and moved in the film transport direction, the unsupported area of the cylindrical film from the holding means placed at a fixed position to the lateral sealing position is However, this expands as the seal body moves downstream, resulting in a decrease in the conveying force applied to the film when the holding device feeds the cylindrical film toward the horizontal sealing position, as well as misalignment and aggregation of the articles. It has been pointed out that the effectiveness of preventing the posture of products and the state of gathering is reduced.

An object of the present invention is to prevent the unsupported area of the cylindrical packaging material from expanding from the presser means to the lateral sealing position in a horizontal bag-forming-filling machine that employs a box-motion type lateral sealing device, so that the product can be effectively packaged. An object of the present invention is to provide an article holding device for a horizontal bag-forming-filling machine that can support the upper part of the bag.

The article holding device of the horizontal bag-forming-filling machine of the invention according to claim 1 of the present application includes:
Between the articles (11) fed into the cylindrical packaging material (10) at predetermined intervals, the cylindrical packaging material (10) is held between the upper and lower seal bodies (15, 16) and moved in the packaging material conveyance direction. In a horizontal bag making and filling machine that performs horizontal sealing while
Disposed on the upstream side of the sealing body (15, 16), and capable of supporting and transporting the article (11) from above the cylindrical packaging material (10), to the outside of the endless cable body (56). a presser means (27) having article pressers (59) protrudingly formed at predetermined intervals;
As the sealing bodies (15, 16) move back and forth when performing horizontal sealing with the sealing bodies (15, 16), the pressing means (27) is moved back and forth together with the sealing bodies (15, 16). a moving actuation means (32);
When the holding means (27) is moved back and forth, the holding means (27) supports the article (11) in the cylindrical packaging material (10) and corresponds to the conveyance speed of the cylindrical packaging material (10). It is configured to move in the packaging material conveyance direction at a speed of
The pressing means (27) is
a support base (30) whose position is adjustable up and down with respect to the support member (28) by a height adjustment means (29);
It is supported so as to be slidable back and forth in the packaging material conveyance direction with respect to the support base (30), and is moved back and forth in the packaging material conveyance direction as the seal body (15, 16) is moved back and forth by the actuation means (32). The slide base (31) to be
a driving cable body (49) disposed on the support base (30) and traveling around by a driving motor (46);
The holding means (27) is arranged so as to be able to run around the endless cable body (56), and the support body (33) is supported by the slide base (31);
a transmission means (60) for transmitting the driving force of the drive cable body (49) to the endless cable body (56) while allowing the slide base (31) to slide with respect to the support base (30); Prepare,
The support body (33) is wrapped around the slide base (31) in a state where the driving force can be transmitted from the drive cable body (49) to the endless cable body (56) by the transmission means (60). It is characterized by being configured such that either the front or rear end in the material conveyance direction is rotatably supported.
According to the invention according to claim 1, since the pressing means is moved back and forth in the packaging material conveyance direction in accordance with the back and forth movement of the seal body in the packaging material conveyance direction, the unsupported area of the cylindrical packaging material is expanded. Instead, the upper part of the article is supported by a pressing means up to the vicinity of the horizontal seal position to prevent a decrease in the conveying force applied to the cylindrical packaging material, misalignment of the article, disturbance of the posture of the assembled articles, and disorder of the assembled condition. It can be effectively prevented. Furthermore, even if the holding means moves back and forth in the packaging material conveyance direction, the article presser that supports the article in the cylindrical packaging material from above conveys the packaging material at a speed corresponding to the transportation speed of the cylindrical packaging material. Since it moves in the direction, it is possible to appropriately apply a conveying force to the cylindrical packaging material without shifting the position of the articles or disturbing the posture or the assembled state of the assembled items.
Further, by moving the support base up and down by the height adjusting means, the height at which the cylindrical packaging material is supported by the holding means can be adjusted without affecting the forward and backward movement of the holding means. Furthermore, when the support is rotated to separate the pressing means from the cylindrical packaging material, the troublesome work required to disconnect or connect the linking portion of the drive transmission mechanism from the motor or the like can be eliminated.

In the invention according to claim 2, the actuating means (32) is arranged between the engaging member (62) disposed on the slide base (31) and the front and rear sides of the seal body (15, 16) in the packaging material conveyance direction. a coupling member (61) that moves in conjunction with the movement and engages with the engagement member (62) to move the slide base (31) together;
The coupling member (61) is characterized in that it is configured to be engaged with the engagement member (62) in a manner that allows variation in the height of the holding means (27).
According to the invention of claim 2, even if the height of the support base is adjusted when changing the support height of the article, the engagement state between the engagement member and the coupling member is not released, and the pressing means can be moved together with the seal body.

In the invention according to claim 3, a conveyor (13) is provided that supports the cylindrical packaging material (10) from below that is conveyed toward the seal body (15, 16),
The conveyor (13) includes an extensible portion (21) that expands and contracts the end of the conveyor conveyance back and forth in the packaging material conveyance direction in conjunction with the opening/closing movement and back-and-forth movement of the seal bodies (15, 16). ,
It is characterized in that the connecting member (61) is provided on the expandable portion (21).
According to the third aspect of the present invention, the presser means can be moved together with the seal body in conjunction with the opening/closing movement and back-and-forth movement of the seal body without providing a separate dedicated drive means.

In the invention according to claim 4, the support body (33) is arranged such that the protruding end of the article holder (59) located at the lower running part of the endless cable body (56) is connected to the slide base (31). It is characterized by comprising a holding means (63) for positioning and holding in a posture that moves along a trajectory in the packaging material conveyance direction.
According to the fourth aspect of the present invention, the article can be appropriately supported from above by the presser means without vertically displacing the article.

In the invention according to claim 5, the holding means (63) has a supporting member at the other end spaced apart from one end where the supporting member (33) is rotatably supported with respect to the slide base (31). (33), a magnet (64) provided on one side of the slide base (31), and a magnetic body (65) provided on the other side.
According to the fifth aspect of the invention, since the support body is positioned and held by magnetic attraction between the magnet and the magnetic body, coupling and disassembly operations can be carried out extremely easily.

According to the present invention, since the pressing means is moved in accordance with the back and forth movement of the sealing body in the packaging material conveyance direction, the unsupported area that supports the upper part of the article does not expand with respect to the horizontal sealing position. By supporting the upper part of the article with the pressing means up to the vicinity of the horizontal seal position, it is possible to effectively prevent the article from shifting, the posture of the assembled article, and the assembled condition from being disturbed.

FIG. 2 is a schematic side view of main parts of a horizontal bag-forming-filling machine. FIG. 3 is a schematic plan view of the article holding device. It is a schematic perspective view of an article holding device, Comprising: Some members are shown transparently. FIG. 3 is a schematic diagram of the article holding device viewed from the upstream side. FIG. 3 is a schematic vertical cross-sectional view of the article holding device viewed from the downstream side. FIG. 6 is an explanatory diagram showing the movement of the article press when the press means moves back and forth in the film transport direction.

Next, a preferred embodiment of the article holding device for the horizontal bag-forming-filling machine according to the present invention will be described below with reference to the accompanying drawings.

A horizontal bag-forming-filling machine (packaging machine) forms a cylindrical film (cylindrical packaging material) 10 by polymerizing a band-shaped film (packaging material) pulled out from a roll of raw material into a cylindrical film (cylindrical packaging material) 10 by polymerizing both longitudinal edges of the film into a palm-shaped shape. a supply conveyor that supplies the articles 11 toward the cylindrical film 10 at predetermined intervals; and a vertical seal oriented in the film transport direction at the overlapping portion of the cylindrical film 10 that is overlapped in the shape of palms together. a vertical sealing device for carrying out the sealing process, a film conveying means for sandwiching the overlapping portion of the tubular film 10 and conveying the tubular film 10 toward the vertical sealing device, and articles fed into the tubular film 10 at predetermined intervals. A lateral sealing device 12 that clamps the cylindrical film 10 at the front and rear positions of 11 and performs lateral sealing and cutting in a direction (width direction) intersecting the transport direction of the film is provided. In addition, in the packaging machine, the articles 11 supplied in the cylindrical film 10 are placed before and after the horizontal sealing device 12 in the film transport direction, and the cylindrical film 10 is supported from below and transported to the downstream side. A transport conveyor 13 and a discharge conveyor 14 are provided, and the product is configured to be transversely sealed and cut and then transported to the next process as a bagged product (pillow packaged product) separated from the upstream cylindrical film 10. be done.

As shown in FIG. 1, the horizontal sealing device 12 includes a plurality of (three in the embodiment) a pair of sealing bodies 15 and 16 vertically facing each other across the conveyance path of the cylindrical film 10 conveyed by the conveyor 13. ), and the plurality of seal units 17a, 17b, 17c are arranged in line in the conveying direction of the cylindrical film 10 (hereinafter referred to as the film conveying direction (packaging material conveying direction)). be done. The plurality of seal units 17a, 17b, 17c each have a plurality of opening/closing mechanisms 18 that independently move the pair of seal bodies 15, 16 toward and away from each other, and each of the plurality of seal units 17a, 17b, 17c independently. and a plurality of reciprocating mechanisms 19 that reciprocate along the film transport direction. By operating the opening/closing mechanism 18 and the reciprocating mechanism 19, each seal unit 17 moves the pair of seal bodies 15, 16 from an initial position where they are separated from each other across the conveyance path to approach each other to form a cylindrical film. It is configured to perform a so-called box motion operation in which the articles 10 are sandwiched between the articles, and the tubular film 10 is moved downstream in the film transport direction in the sandwiched state, and then separated from each other and returned to the initial position. . Each seal unit 17 is configured to move the tubular film 10 in the width direction of the tubular film 10 while the tubular film 10 being transported by the film transporting means is moved downstream in the film transport direction while being held between the pair of seal bodies 15 and 16. It is configured to apply a horizontal seal and cut the cylindrical film 10 in the width direction using a knife installed in one of the sealing bodies 15.

As shown in FIG. 1, the transport conveyor 13 includes a movable frame 21 that is movable back and forth in the film transport direction with respect to a fixed frame 20, and a plurality of pulleys 22 arranged on both frames 20, 21. An endless belt 23 is wound around it so that it can run. The movable frame 21 of the conveyor 13 is configured to move horizontally in conjunction with the opening/closing mechanism 18 of the seal unit 17a (in this example, the most upstream seal unit) and to follow the opening/closing movement of the pair of seal bodies 15, 16. When the pair of seal bodies 15 and 16 approach, the turning part of the endless belt 23 wound around the pulley 22 at the end of the conveyor 13 is moved upstream in the film conveyance direction, and the pair of seal bodies 15 and 16 are moved toward each other. , 16 toward the meshing position, and when the pair of seal bodies 15, 16 are separated, the turning part of the pulley 22 at the end of the endless belt 23 is moved downstream in the film transport direction. Configured to move. Further, the movable frame 21 horizontally moves back and forth in the film transport direction, following the back and forth movement of the seal unit 17a (seal bodies 15, 16) in the film transport direction. The carry-out conveyor 14 has the same structure as the conveyor 13, and has a movable frame 24 that is movable back and forth in the film conveyance direction with respect to a fixed frame. The turning part of the endless belt 26, which is wound around the pulley 25 at the starting end of the discharge conveyor 14, is set on the downstream side in the film conveyance direction so as to be linked to the opening/closing movement and the back and forth movement of the pair of seal bodies 15 and 16 in the seal unit (seal unit). and is configured to move upstream in the film transport direction, and the turning portion of the endless belt 26 horizontally moves back and forth in the film transport direction following the movement of the seal unit 17c back and forth in the film transport direction. . In the transport conveyor 13, a movable frame 21 whose downstream portion in the film transport direction expands and contracts with respect to the fixed frame 20 is linked to (corresponding to) the opening/closing movement of the pair of seal bodies 15 and 16 and the back and forth movement in the film transport direction. ) constitutes an extensible section that moves (expands and contracts) back and forth in the film transport direction.

As shown in FIGS. 1, 4, and 5, on the upstream side of the sealing unit 17a in the horizontal sealing device 12, a cylindrical film 10 is supported from above the article 11 fed into the cylindrical film 10. An article holding device is provided in which holding means 27 for assisting the conveyance of the cylindrical film 10 is disposed above the conveyor 13 by running the article. The article holding device includes an operating means 32 that moves the holding means 27 back and forth in the film transporting direction in accordance with the back and forth movement of the seal bodies 15 and 16 in the film transporting direction, and when the holding means 27 moves back and forth, The article presser 59 supporting the article 11 is configured to run in the film conveyance direction at a speed synchronized with the conveyance speed of the cylindrical film 11. Further, the article holding device includes a support base 30 whose position can be adjusted up and down with respect to the support column (support member) 28 by a height adjustment means 29, and a support base 30 which is supported so as to be slidable back and forth in the film transport direction with respect to the support base 30. A slide base 31, a support member 33 on which a presser means 27 is disposed, and a support member 33 rotatably supported at either front or rear end in the film transport direction with respect to the slide base 31, and a presser means 27, which will be described later. A drive mechanism 34 that runs around an endless belt (endless cable body) 56 in a predetermined direction, and the actuation means 32 causes the holding means 27 disposed on the slide base 31 to press the film of the seal unit 17a. The film is integrally moved back and forth in the film transport direction in accordance with the back and forth movement in the film transport direction.

As shown in FIGS. 1 to 5, the support column 28 is disposed on the machine frame of the packaging machine and stands upright on one side of the conveyance path of the conveyor 13. The support base 30 is supported so as to be movable in the vertical direction via a plurality of extending slide shafts 35. A threaded shaft 36 is vertically supported by the support column 28, and the threaded shaft 36 is screwed into a female threaded member 37 disposed on the support base 30. An operation handle 38 is rotatably disposed at the upper end of a screw shaft 36 extending upward from the support column 28. By rotating the operation handle 38 forward and backward, the screw shaft 36 and the female screw member 37 are rotated. Under the screwing action of the adjustment screw means consisting of The height position of the pressing means 27 relative to the conveying surface of the conveyor 13 can be adjusted depending on the dimensions. The height adjusting means 29 is constituted by the operation handle 38, the slide shaft 35, the threaded shaft 36, and the female threaded member 37.

As shown in FIGS. 2 to 4, a guide rail 39 extending in the film transport direction is disposed on the front surface of the support base 30 facing the transport path side of the tubular film 10, and the guide rail 39 is connected to the slide base. 31 is supported so as to be slidable forward and backward in the film transport direction via a slider 40. A rotary shaft 41 is rotatably supported on the upstream side of the slide base 31 in the film transport direction, and a toothed first pulley 42 rotates integrally with the end of the rotary shaft 41 that extends toward the back side of the slide base 31. A toothed second pulley 43 is disposed at the end of the rotating shaft 41 that extends toward the front side of the slide base 31 so as to be rotatable therewith. Furthermore, guide rollers 44 are rotatably supported on the slide base 31 at positions above the first pulley 42 and at front and back positions in the film transport direction sandwiching the first pulley 42 .

A toothed drive pulley 45 is rotatably supported on the front surface of the support base 30 at a position on the upstream side in the film transport direction. It is linked to a drive motor 46 made of a servo motor via a linkage mechanism 47 made of a belt and a pulley. Further, a toothed driven pulley 48 is rotatably supported on the front side of the support base 30 on the downstream side in the film transport direction, and the driven pulley 48 and the drive pulley 45 are connected to each other with teeth and an endless drive belt (driving rope). 49 is wrapped around it. The lower running portion of the drive belt 49 is wound around the first pulley 42 disposed on the slide base 31, and is held by guide rollers 44, 44 so as to maintain a large rotation range around the first pulley 42. will be guided to. With such a configuration, the drive pulley 45 is rotated by the drive motor 46, and the drive belt 49 is rotated, so that the second pulley 43 is rotated via the first pulley 42. When the slide base 31 slides downstream in the film conveyance direction, the drive motor 46 rotates around the drive belt 49 at a speed matching the horizontal movement speed of the slide base 31. The first pulley 42 meshing with the first pulley 42 moves downstream in the film transport direction together with the lower running section without rotating (see FIGS. 6(a) and 6(b)).

As shown in FIGS. 2 and 3, a support shaft 50 extending toward the front side is disposed at the downstream end (one end) of the slide base 31 in the film transport direction, and the support shaft 50 is rotatably supported. The presser means 27 is disposed along the support member 33 extending upstream in the film transport direction from the shaft support. The pressing means 27 is composed of an endless conveyor, and includes a toothed conveyor drive pulley 52 rotatably supported by the support shaft 50, and a rear surface from the support 33 at the upstream end side of the support 33 in the film conveyance direction. It is wound between a toothed conveyor driven pulley 55 that is freely rotatably supported by a driven shaft 54 supported by a support piece 53 spaced apart from the side, and a conveyor drive pulley 52 and a conveyor driven pulley 55. and a toothed endless belt 56. Further, on the back side of the conveyor drive pulley 52, a toothed transmission pulley 57 that can rotate integrally with the conveyor drive pulley 52 is freely rotatably supported by the support shaft 50, and the transmission pulley 57 and the second A toothed transmission belt 58 is wound between the pulley 43 and the pulley 43 . The rotation of the second pulley 43 is transmitted to the transmission belt 58, the transmission pulley 57, and the conveyor drive pulley 52, so that the endless belt 56 runs around the endless belt 56 in a predetermined direction. On the outer circumferential surface of the endless belt 56, a plurality of comb-shaped article pressers 59 made of silicone rubber are arranged at equal intervals in the circumferential direction, and as the endless belt 56 runs around, articles on the lower running section are held. The presser foot 59 is configured to press the upper part of the article 11 supplied into the cylindrical film 10 and to assist in conveying the cylindrical film 10 . When the slide base 31 horizontally slides along the tubular film 10 toward the downstream side in the film conveyance direction, the holding means 27 prevents the drive belt 49 from rotating while the first and second pulleys 42 and 43 do not rotate. By moving to the downstream side in the film transport direction together with the lower running section, the article presser 59 of the lower running section can slide as shown in FIGS. 6(a) and 6(b) without the endless belt 56 running around. As the base 31 moves, it moves downstream in the film transport direction at a speed that is synchronized (corresponding) with the film transport speed. Furthermore, when the slide base 31 slides upstream in the film transport direction, the holding means 27 prevents the first and second pulleys 42 and 43 from rotating by the same distance as the sliding amount due to the rotation of the drive belt 49. As shown in FIG. 6(c), the endless belt 56 runs around and the article presser 59 in the lower running section moves downstream in the film transport direction at a speed that is synchronized (corresponding) with the film transport speed. configured. In the embodiment, the endless belt 56 of the holding means 27 is connected to a predetermined position from the drive motor 46, the linkage mechanism 47, the drive belt 49, the first pulley 42, the second pulley 43, the transmission belt 58, the transmission pulley 57, and the conveyor drive pulley 52. The drive mechanism 34 is configured to rotate in the direction. Further, a transmission means 60 transmits the driving force of the drive belt 49 to the endless belt 56 from the first pulley 42 , the second pulley 43 , the transmission belt 58 , and the transmission pulley 57 by allowing the slide base 31 to slide with respect to the support base 30 . is configured.

Here, the support body 33 is rotatably supported by a support shaft 50 disposed on the slide base 31, and a transmission pulley 57 and a conveyor drive pulley 52 are freely rotatably supported by the support shaft 50. The support body 33 is attached to the slide base 31 in a state in which the driving force can be transmitted from the drive belt 49 to the endless belt 56 by the transmission means 60 without changing the winding state between the transmission belt 58 and the transmission pulley 57. It is configured to be able to move up and down on the upstream end side (the other end side) in the film transport direction using the supported support shaft 50 as a fulcrum.

As shown in FIGS. 1, 2, and 5, the actuation means 32 includes a movable frame 21 of the conveyor 13, and a coupling means 67 for coupling the movable frame 21 to the slide base 31. 31 is configured to move back and forth in the film transport direction integrally with the movable frame 21. Further, the coupling means 67 includes a coupling member 61 disposed on the movable frame 21 and extending upward, and a roller 62 as an engagement member rotatably supported by the slide base 31. The movable frame 21 and the slide base 31 are coupled to each other by inserting the roller 62 from above into the long groove 61a that is formed in the movable frame 21 and opens upward. The height adjustment means 29 is allowed to adjust the height position (height change) of the pressing means 27 (slide base 31) within the range where the roller 62 is located within the long groove 61a. In the embodiment, two rollers 62, 62 are rotatably supported by the slide base 31 at a distance in the film transport direction, and two long grooves 61a are provided in the coupling member 61 corresponding to both rollers 62, 62. , 61a are provided. Further, by removing the roller 62 upward from the long groove 61a, the state of coupling between the movable frame 21 and the slide base 31 can be released.

As shown in FIG. 2, FIG. 3, and FIG. The protruding end of the presser foot 59 is provided with a holding means 63 for positioning and holding the presser foot 59 in a position that moves along a locus in the film transport direction. The holding means 63 includes a magnet 64 disposed on the upstream side of the slide base 31 in the film transport direction, and a magnetic metal 65 made of a metal material disposed on the support piece 53, From the position in which the lower running section is tilted upward from the downstream side to the upstream side in the film transport direction (see the two-dot chain line in FIG. 1), the upstream end in the film transport direction is rotated with the support body 33 about the support shaft 50 as a fulcrum. By rotating downward, the magnetic metal (magnetic material) 65 of the support body 33 is magnetically attracted to the magnet 64 of the slide base 31, and the lower running portion of the endless belt 56 is aligned in the film transport direction (see FIG. (see solid line). In this embodiment, the locus of movement at the lower running part of the protruding end of the article presser 59 in the presser means 27 held by the holding means 63 is horizontal along the film transport direction, but it is inclined downward toward the downstream side. The presser means 27 may be positioned and held in a posture that provides a movement trajectory. Further, a rod-shaped operating handle (operating portion) 66 is provided on the front surface of the support body 33 and protrudes toward the front side on the upstream side in the film transport direction, and by lifting the support body 33 with the operation handle 66, the holding device 63 is released, and the support body 33 can be rotated about the support shaft 50 as a fulcrum.

Next, the operation of the article holding device of the horizontal bag-forming-filling machine according to the embodiment will be explained. Note that FIG. 6 is an explanatory diagram showing the relationship between the operation of the sealing unit 17a and the movement of the article presser 59, and for the sake of understanding, for convenience, the article presser 59 at a predetermined position and the article supported by the article presser 59 are shown. Only the articles 11 are hatched to show the relationship with the movement of the articles 11 supplied into the cylindrical film 10 over time.

As shown in FIGS. 6(a) and 6(b), when the pressing means 27 moves integrally with the sealing unit 17a to the downstream side in the film transport direction, the first and second pulleys 42, 43 By moving downstream in the film transport direction together with the lower running section of the drive belt 49 without rotating, the article presser 59 on the lower running section can be moved along with the movement of the slide base 31 without the endless belt 56 running around. and moves downstream in the film transport direction at a speed that is synchronized with the film transport speed. The article presser 59 that supports the article 11 from above in the lower running section moves downstream in the film transport direction together with the article 11, so the relative positional relationship with the article 11 does not change and the article 11 can be appropriately supported to assist in transporting the cylindrical film 10. FIG. 6(b) shows a state in which the article presser 59 has been moved by a distance Y from the position shown in FIG. 6(a) to the downstream side in the film transport direction. Further, as shown in FIG. 6(c), when the pressing means 27 moves integrally with the sealing unit 17a to the upstream side in the film transport direction, the first and second pulleys 42 and 43 move in the film transport direction. However, as the drive belt 49 runs around, the first and second pulleys 42 and 43 rotate by the same distance as the slide amount, causing the endless belt 56 to run around and move to the lower running section. The article presser 59 moves downstream in the film transport direction at a speed synchronized with the film transport speed. That is, when the first and second pulleys 42 and 43 rotate by the same distance as the sliding amount of the holding means 27, and the holding means 27 moves upstream by a distance Y, the article 11 is moved from above in the lower running section. The supporting article presser 59 moves downstream by a distance Y, and the relative positional relationship with the article 11 does not change, and it is possible to properly support the article 11 and assist in transporting the tubular film 10. can.

In the article holding device of the embodiment, the holding means 27 is disposed on a slide base 31 that is supported so as to be slidable back and forth in the film transport direction with respect to the support base 30, and the slide base 31 is attached to one pair of the seal units 17a. It is connected to the movable frame 21 of the transport conveyor 13, which expands and contracts in conjunction with the opening/closing movement of the pair of seal bodies 15, 16 and the back and forth movement in the film transport direction. The holding means 27 is configured to move integrally. As a result, as shown in FIG. 6, the distance N between the pressing means 27 and the pair of seal bodies 15 and 16 of the seal unit 17a does not change, and the unsupported area of the cylindrical film 10 does not expand. The upper part of the article 11 can be supported by the pressing means 27 up to the vicinity of the horizontal sealing position to assist in transporting the cylindrical film 10. Therefore, it is possible to effectively prevent a reduction in the conveying force applied to the tubular film 10 by the pressing means 27, a shift in the position of the articles 11, and disturbances in the posture and condition of the assembled articles. Further, since the holding means 27 is configured to move integrally with the seal bodies 15 and 16 using the movable frame 21 of the conveyor 13, the holding means 27 can be moved around the cylindrical film without providing a separate dedicated driving means. The 10 unsupported areas can be moved appropriately so as not to expand.

In the article holding device of the embodiment, the holding means 27 holds the article holding member 59, which supports the article 11 in the tubular film 10 from above, when the holding means 27 moves downstream and upstream in the film transport direction. In any case during movement, the structure is configured to move downstream at a speed synchronized (corresponding) with the transport speed of the cylindrical film 10, so that the articles 11 in the cylindrical film 10 are not misaligned or the aggregated items are The conveyance of the cylindrical film 10 can be appropriately assisted without disturbing the posture or the assembled state, and the article 11 can be appropriately conveyed together with the cylindrical film 10 without being displaced.

In the article holding device of the embodiment, a support base 30 that supports a slide base 31 on which the holding means 27 is disposed so as to be slidable back and forth in the film transport direction is moved up and down with respect to a support 28 by a height adjusting means 29. Since the support height of the tubular film 10 by the presser means 27 can be adjusted by adjusting the position, the support height can be adjusted without affecting the back and forth movement of the presser means 27 in the film transport direction. . Furthermore, when the slide base 31 is moved up and down, the rollers 62 of the actuating means 32 move within the long grooves 61a of the coupling member 61 and maintain the engaged state, so that the supporting height of the tubular film 10 can be reduced. Even in the case of adjustment, the supporting height of the tubular film 10 can be adjusted without the coupling state of the back and forth movement of the holding means 27 in the film transport direction being released.

In the article holding device of the embodiment, the holding means 27 is moved in such a manner that the protruding end of the article holding member 59 located at the lower running portion of the endless belt 56 moves along a trajectory directed in the film transport direction. Since the base 31 is configured to be positioned and held by the holding means 63, the holding means 27 is prevented from moving up and down during packaging operation, and the holding means 27 appropriately supports the article 11 from above. can do. Further, the pressing means 27 lifts the upstream end of the transport upward using one end (support shaft 50) in the film transport direction as a fulcrum in a state where the driving force of the drive belt 49 can be transmitted to the endless belt 56 by the transmission means 60. This configuration eliminates the troublesome operations required to disconnect and connect the transmission means 60 during film setting and other preparatory work before starting the packaging operation, and various maintenance work related to the transport section of the cylindrical film 10. It can be omitted and the work can be done in a short time. Moreover, since the holding means 63 can position and fix the holding means 27 by magnetic attraction, the coupling and disassembly operations can be performed extremely easily. Further, since the operating handle 66 is provided on the support 33 at the upstream end in the film transport direction away from the rotational fulcrum (support shaft 50), it is easy to lift the presser means 27 together with the support 33 during maintenance or the like. Therefore, it is easy to operate.

(Example of change)
The present invention is not limited to the configuration of the embodiment, but can be modified as follows, for example. In addition, various embodiments may be adopted for the configurations described in the examples, without being limited to the following modified examples, within the scope of the gist of the present invention.
(1) The seal unit 17 may be one, two, or a plurality of four or more seal units.
(2) In the embodiment, the toothed endless belt 56, the toothed belts 49, 58, and the pulleys 45, 42, 43, 52, 57 were used as the drive mechanism 34 and the transmission means 60. It can be replaced by
(3) In the embodiment, the slide base 31 is connected to the movable frame 21 of the conveyor 13 so that the slide base 31 moves together with the seal bodies 15 and 16. However, in place of the movable frame 21, at least It is possible to adopt a configuration in which the slide base 31 is coupled to a member that moves back and forth in the film transport direction integrally with the seal bodies 15 and 16.
(4) In the embodiment, the actuating means 32 is configured to move the slide base 31 by the movable frame 21 that moves integrally with the seal bodies 15, 16, but the actuating means 32 may include a driving means such as a motor or a cylinder. Accordingly, it is possible to adopt a configuration in which the slide base 31 is moved back and forth in the film transport direction integrally with the seal members 15 and 16.
(5) In the coupling means 67, the arrangement of the coupling member 61 and the roller (engaging member) 62 may be reversed from that in the embodiment.
(6) Although the holding means 63 is composed of the magnet 64 and the magnetic metal (magnetic material) 65, it may be composed of two magnets capable of magnetic attraction. In addition, instead of the magnetic attraction structure, the holding means 63 may be of a screw type, a latch type that changes the engaging part between an engaged position and a released position by a predetermined operation, and other various means capable of positioning and holding. can be adopted.

10 cylindrical film (cylindrical packaging material), 11 article, 13 conveyor, 15 seal body, 16 seal body, 21 movable frame (expandable part), 27 presser means, 28 support column (support member)
29 height adjustment means, 30 support base, 31 slide base, 32 actuation means 33 support body, 46 drive motor, 49 drive belt (drive cable body)
56 endless belt (endless cable body), 59 article holding member, 60 transmission means, 61 coupling member 62 roller (engaging member), 63 holding means, 64 magnet, 65 magnetic metal (magnetic material)

Claims (5)

A horizontal bag-forming-filling machine that applies horizontal seals between articles fed into a cylindrical packaging material at predetermined intervals while sandwiching the cylindrical packaging material between upper and lower sealing bodies and moving in the direction of transport of the packaging material. In,
a holding means disposed on the upstream side of the seal body and having article pressers protruding outward from the endless cable body at predetermined intervals so as to be able to support and convey the articles from above the cylindrical packaging material;
an actuating means for moving the pressing means back and forth together with the seal body as the seal body moves back and forth when applying a horizontal seal with the seal body;
When the presser means is moved back and forth, the presser means supports the article in the cylindrical packaging material and moves in the packaging material conveyance direction at a speed corresponding to the conveyance speed of the cylindrical packaging material,
The pressing means is
a support base whose position is adjustable up and down with respect to the support member by a height adjustment means;
a slide base supported so as to be slidable back and forth in the packaging material conveyance direction with respect to the support base, and moved back and forth in the packaging material conveyance direction by the actuation means as the seal body moves back and forth;
a drive cable body disposed on the support base and traveling around by a drive motor;
The holding means is disposed so as to be able to run around the endless cable body, and a support body is supported by the slide base;
a transmission means for transmitting the driving force of the drive cable body to the endless cable body while allowing the slide base to slide with respect to the support base;
The support body is rotatably supported at either the front or rear end in the packaging material conveyance direction with respect to the slide base in a state where the driving force can be transmitted from the drive cable body to the endless cable body by the transmission means. 1. An article holding device for a horizontal bag-forming-filling machine, characterized in that it is configured to The actuation means is interlocked with an engagement member disposed on the slide base and the back and forth movement of the seal body in the packaging material conveying direction, and engages with the engagement member to move the slide base together. A connecting member;
2. The article holding device for a horizontal bag-forming-filling machine according to claim 1, wherein the connecting member is configured to be engaged with the engaging member such that a change in the height of the holding means can be tolerated. A conveyor is provided to support the cylindrical packaging material from below, which is conveyed toward the seal body,
The conveyor includes an extensible portion that expands and contracts the end of the conveyor conveyance back and forth in the packaging material conveyance direction in conjunction with the opening/closing movement and back-and-forth movement of the seal body,
3. The article holding device for a horizontal bag-forming-filling machine according to claim 2, wherein the connecting member is provided on the expandable portion. Holding means for positioning and holding the support body with respect to the slide base in a posture in which a protruding end of an article holder located at a lower running portion of the endless cable body moves along a trajectory directed in the packaging material conveyance direction. The article holding device for a horizontal bag-forming-filling machine according to any one of claims 1 to 3, characterized in that: The holding means includes a magnet provided on one of the support and the slide base and a magnetic body provided on the other at the other end separated from one end where the support is rotatably supported with respect to the slide base. 5. An article holding device for a horizontal bag-forming-filling machine according to claim 4.

Images