JP2018100120A - Article holding equipment in horizontal bag filling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide article holding equipment which can secure a wide working space between an endless belt and a conveyance passage with a simple structure.SOLUTION: A horizontal bag filling machine comprises an endless conveyer 67 to make an article 102 provided in a film 101 formed cylindrically to be conveyed while holding the article 102 from an upper side with the film 101. A paralleled link mechanism 36 is constituted by supporting a first link 24 and a second link 33 respectably and rotatably at one end of a supporting member 22 on a machine flame of the horizontal bag filling machine and by supporting an intermediate link 31 of a protruding portion of one end of a supporting arm 26 rotatably at the other end of the first link 24 and the second link 33. The endless conveyer 67 is supported by the supporting arm 26. When a handle is operated, the endless conveyer 67 is held by holding means in a prescribed height position after going up and down without an angle change by acting of the paralleled link mechanism 36.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an article pressing device in a horizontal bag making and filling machine that presses and conveys an article in a cylindrical film together with the film from above.

  Patent Document 1 discloses a horizontal bag making and filling machine in which a film is formed into a cylindrical shape by bag making means and an article is supplied into the cylindrical film. And in this horizontal bag making and filling machine of Patent Document 1, bag making means for making the film cylindrical, and horizontal sealing means for sealing the film in a state in which the article is enclosed in the cylindrical film, An article pressing device located between the two is provided. This article pressing device presses an article together with the film from above to prevent disturbance in the conveying posture of the article and displacement of the article, and eliminate excess air in the cylindrical film.

  In the article pressing device of Patent Document 1, an arm is cantilevered at one end by a support member, and an endless conveyor is supported by the arm. In the case of maintenance such as cleaning of the transfer bed, the endless conveyor is pivoted upward about the support member, and the space between the lower surface of the endless conveyor and the upper surface of the transfer bed is greatly opened.

  This kind of article pressing device is also disclosed in Patent Document 2. In the article pressing device of Patent Document 2, a moving base that can be moved up and down by rotating the screw shaft with a handle provided on the screw shaft, and being detachable by a pin with respect to the moving base, is also supported. An operation block that is movable up and down with respect to the rod, a transport belt supported by the operation block, and the like are provided.

  In this Patent Document 2, an operation block that supports a conveyor belt is integrated with a moving table by an engagement pin. In this state, a screw shaft is rotated by a handle to move the moving table up and down by the action of a screw. Thus, the conveyor belt can be moved in the same direction with respect to the screw shaft. In addition, a coil spring is provided on the support rod that supports the operation block and is compressed by the operation block when locked by the locking pin. Then, by releasing the locking by the locking pin, the operation block is moved upward by the spring force of the coil spring, and thus the conveying belt is also moved upward.

  That is, in this configuration, the height of the conveyor belt can be adjusted by moving the movable table up and down with the handle, and the conveyor belt is raised by the coil spring by releasing the latch pin. be able to. As a result, a wide working space for maintenance or the like can be secured below the conveyor belt.

JP 2011-219159 A JP 2009-96484 A

  However, in Patent Document 1, when the conveyor belt is retracted upward, the conveyor belt is rotated about the support member at one end thereof, so that the lower part of the center of rotation does not spread. As a result, a sufficiently wide working space cannot be obtained below the support arm.

  In Patent Document 2, many parts such as a screw shaft for moving the conveyor belt up and down, a support rod, a moving base, an operating block, a coil spring, and a locking pin are necessary, and the mechanism becomes complicated. There is a problem that it ends up. In addition, by using the coil spring, the conveyor belt can be raised only by releasing the locking by the locking pin, but the elastic restoring force may not work properly depending on the weight of the conveyor belt. Further, when the locking pin is again locked, it is necessary to compress the coil spring, that is, it is necessary to push back the conveyor belt downward manually, which increases the work load for the operator. There is also.

  In view of the above problems, the present invention provides an article pressing device in a horizontal bag making and filling machine that does not require a complicated mechanism and can secure a wide working space between an endless conveyor and a conveyance path with a simple configuration. The purpose is to provide.

  In order to achieve the above-described object, the invention described in claim 1 is configured such that an article 102 that is disposed above a conveyance path of the film 101 and is supplied into the film 101 formed into a cylindrical shape is combined with the film 101 from above. In the article pressing device 21 in the horizontal bag making and filling machine provided with the endless conveyor 67 for holding and transporting, each can be rotated at one end with respect to the support member 22 on the machine frame of the horizontal bag making and filling machine. The first link 24 and the second link 33 supported in parallel and the other end of the first link 24 and the second link 33 is rotatably supported at one end and extends in the conveying direction, and the endless conveyor A parallel link mechanism 36 including a support arm 26 having a pair of winding portions 64 and 66 for winding 67, and an operation portion 71 for raising and lowering the support arm 26. It is possible to secure a working space below the endless conveyor 67 by regulating means 44 and 47 for regulating the height of the support arm 26 and regulating the height position of the support arm 26 for maintaining the adjusted height. Holding means 41 and 43 for holding the support arm 26 at a predetermined height position are provided.

  In the above configuration, the height of the support arm 26 is adjusted by the regulating means 44 and 47, and the position is maintained. And by operation with respect to the operation part 71, the endless conveyor 67 is raised / lowered while the parallel link mechanism 36 rotates. In this case, due to the action of the parallel link mechanism 36, the endless conveyor 67 is moved up and down by parallel movement while maintaining a predetermined angle such as horizontal with respect to the transport path. Therefore, it is possible to secure a wide working space between the endless conveyor 67 and the transport path in the raised state of the endless conveyor 67. The holding means 41 and 43 can hold the support arm 26 at a predetermined height position where a work space can be secured. For this reason, maintenance such as cleaning of the conveyance path and setting of the film 101 can be easily performed. In addition, the endless conveyor 67 is composed of first and second links 24 and 33 and one end of a support arm 26 rotatably supported by the other ends of the first and second links 24 and 33. Since it is moved up and down by the mechanism 36, unlike Patent Document 2, it is not necessary to use a large number of parts such as a screw shaft, a support rod, a moving base, and an operation block, and the configuration is simple.

In the second aspect of the invention, the holding means 41 and 43 are operated by the action of the urging means 43 to hold the support arm 26 at the predetermined height position.
Therefore, in the configuration of the second aspect, when the support arm 26 and the endless conveyor 67 are raised to predetermined positions, the support arm 26 and the endless conveyor 67 are held by the holding means 41, 43 based on the action of the biasing means 43. Is automatically held in the raised position. For this reason, the work space below the endless conveyor 67 can be maintained in an open state by a simple operation, and maintenance work can be easily performed.

  In the invention according to claim 3, the holding means 41, 43 includes a fixed side lock portion 412 provided on the machine frame side and a movable side lock portion 431 provided on the parallel link mechanism 36 side. The both lock portions 412 and 431 engage with each other in an uneven relationship.

  Therefore, in the third aspect of the invention, the support arm 26 is held in the raised position by the engagement of the lock portions 412 and 431. If the support arm 26 is raised, the holding means 41 and 43 are locked due to the engagement of the movable side lock portion 431 and the fixed side lock portion 412, so that the work space below the endless conveyor 67 can be easily expanded. In addition, the support arm 26 can be held in the raised position, and maintenance work can be easily performed.

According to a fourth aspect of the present invention, the operation portion is a handle 71 provided on the extending end side of the support arm 26.
Therefore, in the invention according to the fourth aspect, the support arm 26 and the endless conveyor 67 can be easily moved up and down by having the handle 71 on the extending end side of the support arm 26.

  In the invention according to claim 5, the restricting means adjusts the height by an adjustment screw rod 47 screwed into the support arm 26 and a receiving member 44 for receiving the adjustment screw rod 47. The adjustment screw rod 47 is provided in the vicinity of the rotation center for rotatably supporting the first link 24 on the support member 22.

  Therefore, in the fifth aspect of the present invention, the height position of the support arm 26 is positioned by receiving the adjusting screw rod 47 on the receiving member 44. Then, the height of the support arm 26 can be adjusted according to the shape of the article 102 to be conveyed by rotating the adjustment screw rod 47 and adjusting its position in the forward / backward direction. For this reason, an appropriate conveying action can be given to the article 102. Further, since the adjustment screw rod 47 is provided in the vicinity of the rotation center C1 that rotatably supports the first link 24 on the support member 22, the adjustment screw rod 47 is used as a rotation fulcrum of the parallel link mechanism 36. Can be placed close together. For this reason, it is not necessary to enlarge the receiving member 44 provided on the support member 22, a compact and durable configuration can be obtained, the adjustment amount of the adjustment screw rod 47 can be reduced, and the height of the support arm 26 can be adjusted. Can be easily performed.

The invention according to claim 6 is provided with fulcrum distance adjusting means 38 and 39 for adjusting the distance between fulcrums at both ends of the first link 24 or the second link 33.
Accordingly, in the invention of claim 6, the distance between the fulcrums of the first link 24 or the second link 33 is adjusted by the inter-fulcrum distance adjusting means 38, 39, whereby the first and second links 24, 33 are adjusted. The angle of one end of the support arm 26 rotatably supported at the other end is adjusted. Therefore, the angle of the support arm 26 is changed, and the angle of the endless conveyor 67 with respect to the conveyance path can be adjusted according to the shape and type of the article 102. For this reason, an appropriate conveying action can be given to the article 102.

  In the invention according to claim 7, pulleys 53 and 62 for transmitting rotation to the endless conveyor 67 are provided at the rotation center C <b> 1 at one end of the first link 24 and the rotation center C <b> 3 at the other end. The rotary shafts 52 and 61 are rotatably attached to the rotary shafts 52 and 61, respectively. The endless cords 63 are stretched between the pulleys 53 and 62.

  Therefore, in the seventh aspect of the invention, the endless cord body 63 is paralleled by the endless cord body 63 being stretched between the pulleys 53 and 62 that can rotate integrally with the rotary shafts 52 and 61 of the parallel link mechanism 36. It is not located outside the link mechanism 36, and can be easily accommodated in the parallel link mechanism 36. In addition, since the pulleys 53 and 62 are positioned coaxially with the rotation centers at both ends of the link, the rotation of the timing pulleys 53 and 62 is not affected even if the link operation in which the parallel link mechanism 26 is rotated is performed. A smooth power transmission action can be obtained.

  According to the present invention, there is an effect that a wide working space can be secured between the endless conveyor and the conveyance path with only a simple configuration without requiring a complicated mechanism.

The front view which simplifies and shows the horizontal bag making and filling machine provided with the article pressing device of the embodiment. The perspective view which abbreviate | omitted the endless conveyor and showed the article pressing device from the front side. The perspective view which looked at the article pressing device from the back side. Sectional drawing of the AA line part of FIG. Sectional drawing of the BB line | wire part of FIG. The rear view of an article pressing device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.
As shown in FIG. 1, in the horizontal bag making and filling machine provided with the article pressing device 21 of the present embodiment, a belt-like film drawn rightward from a film supply source (not shown) on the left side of FIG. 101 is formed into a cylindrical shape by the bag making means 10. An article to be packaged (hereinafter referred to as an article) 102 is pushed along the conveyance path on the upper surface of the conveyance bed 13 at predetermined intervals by the pusher 12 of the supply conveyor 11 toward the inside of the film 101 formed in the cylindrical shape. Is done. The cylindrical film 101 containing the article 102 is conveyed while being polymerized by being sandwiched between a pair of feed rollers 14 on the downstream side of the bag making means 10 and sandwiched by a pair of feed rollers 14. The overlapping edge portion is vertically sealed by a seal roller 15 provided downstream of 14.

  Further, the cylindrical film 101 is horizontally sealed in a direction intersecting the conveying direction by the pair of seal bodies 17 of the horizontal sealing mechanism 16 at the front and rear positions in the conveying direction sandwiching the packaged article 102 in the cylindrical film 101. At the same time, the packaged product 103 is packed. The packaged product 103 is carried out to the next process by the carry-out conveyor 18.

  In the horizontal bag making and filling machine, an article pressing device 21 is provided. The article pressing device 21 is configured to press and convey an article 102 supplied into a cylindrically formed film 101 together with the film 101 from between the bag making means 10 and the lateral seal mechanism 16. In FIG. 3, the transfer bed 13 is provided above the transfer path. Below, this article presser 21 and its related structure are demonstrated.

  As shown in FIGS. 1 to 3, a support member 22 is erected on a machine frame (not shown) of the horizontal bag making and filling machine. The support member 22 includes a support column 221 and the support columns 221. And a support cylinder 222 that is fixed to the upper end and protrudes forward of the machine frame. As shown in FIG. 4, one end of the first link 24 is supported on the front end surface of the support tube 222 via an inner ring 25 that can rotate the cross roller bearing 23 so as to be rotatable in the vertical direction.

  As shown in FIG. 5, at the other end of the first link 24, the support arm 26 is vertically relative to the first link 24 via an inner ring 27 that can rotate the cross roller bearing 28 at one end. It is rotatably supported. As shown in FIG. 2, the support arm 26 includes an extension portion 29 extending in the left-right direction that is the transfer direction along the transfer path of the transfer bed 13, and upward from one end portion of the extension portion 29. A projecting portion 26a projecting toward the top is integrally formed.

  As shown in FIGS. 4 and 6, a rotation shaft 52 is rotatably supported in the support cylinder 222 so as to be coaxial with the rotation center C <b> 1 of one end of the first link 24. Timing pulleys 53 and 54 are fixed to both front and rear ends. The timing pulley 54 on the rear end side is rotated in one direction by a drive motor (not shown) via a timing belt 55 and a plurality of timing pulleys 56. The drive motor drives the supply conveyor 11 and the carry-out conveyor 18. For this reason, the rotating shaft 52 is rotated in synchronization with the supply conveyor 11 and the carry-out conveyor 18.

  As shown in FIGS. 5 and 6, the other end portion of the first link 24 supports a shaft 61 as a rotation shaft that is positioned coaxially with the rotation center C <b> 3 of the other end portion. A timing pulley 62 is supported, and a timing belt 63 as an endless cord is stretched between the timing pulley 62 and the timing pulley 53. The shaft 61 is rotated via the timing belt 63 by the rotation of the rotating shaft 52.

  As shown in FIGS. 1, 5, and 6, a timing pulley 64 is supported on the shaft 61, and a timing pulley 66 is attached to a distal end portion of the extending portion 29 of the support arm 26 via a shaft 65. An endless belt 67 as an endless conveyor is stretched between the timing pulleys 64 and 66 by a timing belt 671 integrally formed on the inner peripheral surface thereof. As the shaft 61 rotates, the timing belt 671 of the endless belt 67 is rotated via the timing pulleys 64 and 66, and therefore the endless belt 67 is rotated. 2, 3 and 6, illustration of the endless belt 67 is omitted.

  On the outer peripheral surface of the endless belt 67, a plurality of pressing members 68 made of comb-like silicone rubber are arranged at equal intervals in the circumferential direction. The endless belt 67 is disposed such that the lower traveling portion thereof travels along the transport path of the transport bed 13, and the pressing member 68 of the lower traveling portion is caused to rotate by the rotation of the endless belt 67. The cylindrical portion of the film 101 and the article 102 are pressed and conveyed from above.

  As shown in FIG. 3, a first protective cover 69 that covers the timing pulleys 53 and 62 and the timing belt 63 is attached to the first link 24. A second protective cover 70 is attached to the extended end portion of the support arm 26 on the left side in FIG. 1 so as to cover the end portion of the endless belt 67 supported by the pulley and open the lower surface. A handle 71 is attached to the front surface of the cover 70 as an operation unit located on the extending end side of the support arm 26. When the operator operates the handle 71, the support arm 26 and the endless belt 67 are raised and lowered while being rotated by the parallel link mechanism 36 described later. In FIG. 1, the protective covers 69 and 70 are not shown.

  As shown in FIGS. 2 and 3, on the back side of the first link 24, a holder 32 protrudes and is fixed to the outer periphery of the support tube 222, and a second link parallel to the first link 24 is attached to the holder 32. 33 is rotatably supported at one end portion via a shaft 34. The other end of the second link 33 is rotatably connected to the protruding portion 26 a of the support arm 26 via a connecting shaft 35. The first link 24 and the second link 33 are parallel to each other, and the intermediate link 31 extends from the protruding portion 26a between the links 24 and 33 to the rotation center C3 of the support arm 26. The links 24 and 33 and the intermediate link 31 connect the rotation center C1 at one end of the first link 24 and the rotation center C2 at one end of the second link 33 with a virtual line in a front view. By connecting the rotation center C3 of the other end portion of the one link 24 and the rotation center C4 of the other end portion of the second link 33 with an imaginary line, the inter-axis distance between the first link and the second link 33 facing each other is obtained. The virtual lines facing each other are parallel and have the same length, so that a so-called parallelogram is defined. Accordingly, the parallel link mechanism 36 is constituted by the links 24, 33 and the intermediate link 31 from the protruding portion 26a of the support arm 26 to the rotation center C3 of the support arm 26, and both the links 24, 33 are kept parallel. In this state, the inner ring 25 and the shaft 34 can be pivoted up and down. In this case, even if both the links 24 and 33 are rotated around the inner ring 25 and the shaft 34 by the action of the parallel link mechanism 36, as is apparent from the solid line and the two-dot chain line in FIG. Without changing the angle, it is translated up and down while maintaining the posture of the same angle, and the extending portion 29 of the support arm 26 and the lower side traveling portion of the endless belt 67 are along the conveying path of the conveying bed 13. Maintain posture.

  Note that the protruding portion 26 a of the support arm 26 protrudes upward, so that the holder 32 and the second link 33 are located above the first link 24. On the other hand, the protrusions 26 a may be protruded downward, and the holder 32 and the second link 33 may be positioned below the first link 24. Further, although the second link 33 is disposed on the back side of the first link 24, the second link 33 may be positioned on the front side of the first link 24. In this case, the shaft 34 that connects the holder 32 and the second link 33 is a long one positioned between the inner holder 32 and the front second link 33, and conversely, the connecting shaft 35 is short.

  As shown in the enlarged view of FIG. 3, the end of the second link 33 on the shaft 34 side is supported by a support hole 37 of the shaft 34 so as to be movable in and out. A plurality of positioning holes 38 are formed along the length direction of the end portion of the second link 33 on the shaft 34 side. A hole (not shown) is formed in the shaft center portion of the shaft 34, and a positioning pin 39 is inserted into the hole while being biased toward the positioning hole 38 by a spring (not shown). The second link 33 is fixed to the shaft 34 by the positioning pin 39 engaging with the positioning hole 38 by the biasing force of the spring. Accordingly, the positioning pin 39 is retracted against the biasing force of the spring, and the positioning pin 39 is engaged with the selected positioning hole 38 by the biasing force of the spring, so that both end portions of the second link 33 are engaged. The distance between the fulcrums, in other words, the substantial length of the second link 33 can be changed, and the angle at the rotation center C3 of the support arm 26 from the protrusion 26a constituting the intermediate link 31 can be adjusted. Therefore, the angle within the vertical plane of the support arm 26 and the endless belt 67, in other words, the angle of the endless belt 67 with respect to the conveyance path can be adjusted. The positioning pin 39 and the positioning hole 38 constitute a fulcrum distance adjusting means for adjusting the fulcrum distance of the second link 33.

  As shown in FIG. 3, a holding member 41 is fixed to the outer periphery of the support cylinder 222 on the rear side of the holder 32, and the outer periphery of the holding member 41 is centered on the axis of the support cylinder 222. A circumferential surface 411 as a contact surface and a notch-shaped lock portion 412 as a fixed-side lock portion are formed. A lock member 43 is rotatably supported on the back surface of the first link 24 by a shaft 42, a claw portion 431 serving as a movable side lock portion is formed at one end portion thereof, and a weight portion 432 is formed at the other end portion. Is formed. The claw portion 431 is always in contact with the circumferential surface 411 of the holding member 41 by an urging force based on the weight balance of the entire lock member 43 including the weight portion 432. When the support arm 26 is raised, the first link 24 is rotated upward via the parallel link mechanism 36, and when the support arm 26 is raised via the parallel link mechanism 36, the claw portion 431 slides on the circumferential surface 411 by the weight balance and engages with the lock portion 412 in an uneven relationship. By this engagement, the rotation of the parallel link mechanism 36 is prevented, and the support arm 26 is locked in a state in which the further upward movement is prevented and held in the raised position. Accordingly, the lock member 43 itself constitutes an urging means, and the holding member 41 and the lock member 43 constitute a holding means.

  A receiving plate 44 as a receiving member is disposed on the lower side of the support tube 222 located at the rotation center C1 of the first link 24 so as to extend laterally. A screw hole provided in a bracket 45 extending from the support arm 26 to the back, in the middle position of the length of the support arm 26 and in the vicinity of the rotation center of the first link 24 with respect to the support tube 222. An adjustment screw rod 47 that is screwed onto 46 is erected. The adjustment screw rod 47 has a handle 471 at the upper end and a contact member 472 at the lower end. The contact member 472 is received by the receiving surface of the receiving plate 44, and the support arm 26 is held at a predetermined height. Therefore, by adjusting the screwing amount of the adjusting screw rod 47 with respect to the screw hole 46, the guide height position of the tubular film by the endless belt 67 supported by the support arm 26 is changed. The receiving plate 44 and the adjusting screw rod 47 constitute a restricting means. Here, the restricting means is disposed in the vicinity of the rotation center between the first link 24 and the support cylinder 222 constituting the parallel link mechanism 36, so that the restriction means is provided at a position away from the rotation center. Thus, the screwing amount of the adjusting screw rod 47 can be set small.

Next, the operation of the article pressing device 21 of the embodiment will be described.
In a normal state where the horizontal bag making and filling machine is operated, the article pressing device 21 is disposed at a lower position by its own weight. That is, the contact member 472 of the adjusting screw rod 47 is received by the receiving plate 44, and the article pressing device 21 is held at the lower position. Therefore, the lower side traveling portion of the endless belt 67 is disposed at a position close to the conveyance path of the conveyance bed 13.

  Further, in this state, the claw portion 431 of the lock member 43 is in contact with the circumferential surface 411 of the holding member 41, and the parallel link mechanism 36 including the first link 24 is prevented from rotating and is moved upward. It is in a rotatable state.

  In this state, by changing the screwing amount of the adjusting screw rod 47 and adjusting the position of the adjusting screw rod 47 up and down, the height of the lower traveling portion of the endless belt 67 can be adjusted. The distance between the conveyance bed 13 and the conveyance path can be appropriately adjusted according to the height of the article 102 or the like. Further, if the inter-axis length between the shaft 34 and the connecting shaft 35 in the second link 33 is adjusted by selecting the positioning hole 38 of the second link 33, the support arm constituting the intermediate link 31 of the parallel link mechanism 36 The angle of the protruding portion 26a of the 26 is adjusted with the rotation center C3 of the support arm 26 as an axis. For this reason, the angle of the support arm 26 and the endless belt 67 with respect to the conveyance path can be adjusted to an appropriate angle according to the shape of the article 102 to be conveyed.

  When the drive motor is rotated in this state, the supply conveyor 11, the carry-out conveyor 18 and the endless belt 67 are run, and the film 101 and the article 102 are conveyed to the right in FIG. At this time, since the pressing member 68 made of silicone rubber is easily deformed according to the shape of the article 102 while holding the article 102, the article 102 can be appropriately conveyed by the endless belt 67 regardless of the shape of the article 102. Thus, the film 101 does not plastically deform or get damaged by hitting the corner of the article 102.

  When performing maintenance such as setting the film 101 on the transport bed 13 or cleaning the transport path, the first link 24 is connected to the cross roller bearing 23 by holding the handle 71 and raising the support arm 26 and the endless belt 67. The second link 33 is pivoted upward about the shaft 34 while being pivoted upward about the inner ring 25. For this reason, due to the action of the parallel link mechanism 36, the support arm 26 and the endless belt 67 are translated upward while maintaining a predetermined angle with respect to the transport path of the transport bed 13. A large work space is secured between the section and the conveyance path. When the support arm 26 and the endless belt 67 are raised to a predetermined upper position, the claw portion 431 of the lock member 43 engages with the lock portion 412 of the holding member 41, and the parallel link mechanism 36 rotates upward. Held in position. Accordingly, the state in which the wide work space is secured is maintained, and maintenance such as setting of the film 101 and cleaning of the conveyance path can be easily performed. Here, the position for securing the work space is at least a position higher than the adjustable height position of the support arm 26 that can be adjusted by the regulating means.

  After the maintenance is completed, if the operator rotates the lock member 43 in the unlocking direction and removes the claw portion 431 from the lock portion 412, the parallel link mechanism 36 can be rotated downward, and the support arm 26 and endless The belt 67 can be returned to a position where the contact member 472 of the adjustment screw rod 47 is received by the receiving plate 44.

  By the way, in the article pressing device 21 of the present embodiment, the timing pulley 53 for transmitting the rotation to the endless belt 67 is coaxial with the rotation centers at both ends of the first link 24, that is, at the joint of the first link 24. 62 and 64 are supported, and timing belts 63 and 671 are wound around the timing pulleys 53, 62 and 64. Accordingly, since the timing belts 63 and 671 are provided between the joints of the first link 24 constituting the parallel link mechanism 36, the timing belts 63 and 671 are not positioned outside the parallel link mechanism 36, and the timing belt 63 , 671 can be stored in the parallel link mechanism 36 without difficulty. In addition, since the timing pulleys 53, 62, and 64 are positioned coaxially with the rotation centers at both ends of the first link 24, the timing pulleys 53 and 62 even if the link operation in which the parallel link mechanism 36 is rotated is performed. , 64 has no effect on the rotation, and a smooth power transmission action can be obtained.

In addition, this invention is not limited to the said embodiment, It is also possible to embody in the following aspects.
-Instead of the endless belt 67, an endless conveyor is constituted by a plurality of rollers arranged in the transport direction.

-Use the endless belt 67 having a flat pressing surface without the pressing member 68.
An adjustment screw rod 47 for adjusting the height of the endless belt 67 is provided on the support member 22 so as to be upside down with respect to the above-described embodiment, and on the contact member 472 at the upper end of the adjustment screw rod 47 turned upside down. A receiving plate 44 to be abutted is provided on the support arm 26.

Instead of providing the contact member 472 at the tip of the adjusting screw rod 47, the contact member 472 should be provided on the upper surface of the receiving plate 44.
In the above-described embodiment, the claw portion 431 is engaged with the lock portion 412 of the holding member 41 by the weight balance of the lock member 43, but the claw portion 431 is used by using the biasing force of the spring as the biasing means. Is configured to engage with the lock portion 412.

  As a configuration for adjusting the distance between the fulcrums of the second link 33, the second link 33 is configured by connecting a plurality of short link pieces, and the entire length of the second link 33 at the connecting portion between the link pieces. Configure to adjust the height.

A restricting means for maintaining the adjusted height of the support arm 26 and the endless belt 67 is provided between the parallel link mechanism 36 and the machine frame of the horizontal bag making and filling machine.
A handle 71 for raising and lowering the article pressing device 21 is provided in a part of the parallel link mechanism 36.

A drive motor for rotating the endless belt 67 is provided on the support arm 26.
A drive motor for rotating the endless belt 67 is provided in the parallel link mechanism 36.
A drive motor for rotating the endless belt 67 is provided on the support member 22.

  -Instead of the structure which adjusts the length of the 2nd link 33, the structure which adjusts the length of the 1st link 24 is provided.

  DESCRIPTION OF SYMBOLS 21 ... Article pressing device, 22 ... Support member, 24 ... 1st link, 25 ... Inner ring, 26 ... Support arm, 29 ... Extension part, 26a ... Projection part, 33 ... 2nd link, 34 ... Shaft, 35 ... Connection Axis 36: Parallel link mechanism 42 ... Axis 44 ... Receiving plate 47 ... Adjusting screw rod 52 ... Rotating axis 61 ... Axis 65 ... Axis 67 ... Endless belt 71 ... Handle 471 ... Handle 472 ... Abutting member.

Claims (7)

In an article presser in a horizontal bag making and filling machine provided with an endless conveyor for transporting an article supplied in a cylindrically formed film placed above a film conveyance path together with the film from above ,
A first link and a second link, each supported in parallel so as to be rotatable at one end with respect to a support member on a machine frame of the horizontal bag making and filling machine;
The other end of the first link and the second link is rotatably supported, and extends in the transport direction, and includes a support arm having a pair of winding portions for winding the endless conveyor. A parallel link mechanism;
An operation unit for raising and lowering the support arm;
Regulating means for regulating the height of the support arm and regulating the height position of the support arm for maintaining the adjusted height;
An article pressing device in a horizontal bag making and filling machine, comprising holding means for holding the support arm at a predetermined height position capable of securing a working space below the endless conveyor.   The article holding device in the horizontal bag making and filling machine according to claim 1, wherein the holding means is operated by an action of an urging means to hold the support arm at the predetermined height position.   The holding means includes a fixed side lock portion provided on the machine frame side and a movable side lock portion provided on the parallel link mechanism side, and the both lock portions engage with each other in an uneven relationship. Item holding device in the horizontal bag making and filling machine according to Item 2.   The article pressing device in the horizontal bag making and filling machine according to claim 3, wherein the operation portion is a handle provided on an extending end side of the support arm. The restricting means adjusts the height by an adjustment screw rod screwed to a support arm and a receiving member for receiving the adjustment screw rod, and the adjustment screw rod attaches a first link to the support member. 2. The article pressing device in the horizontal bag making and filling machine according to claim 1, which is provided in the vicinity of a rotation center that is rotatably supported.   The article pressing device in the horizontal bag making and filling machine according to claim 1, further comprising a fulcrum distance adjusting means for adjusting the distance between the rotation fulcrums at both ends of the first link or the second link.   A pulley for transmitting rotation to the endless conveyor is disposed so as to be rotatable integrally with a rotation shaft that is rotatably attached to a rotation center of one end portion and a rotation center of the other end portion of the first link. The article pressing device in the horizontal bag making and filling machine according to any one of claims 1 to 6, wherein an endless cord is spanned between the pulleys.

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