Vertical pillow wrapping machine

Abstract

To provide a packaging machine that hardly reduces a production speed while effectively preventing biting by enabling arbitrary adjustment of a squeezing condition, in a vertical pillow packaging machine.SOLUTION: A vertical pillow packaging machine 1 comprises: a lateral sealing / cutting section 18 for subjecting a cylindrical film TFi to lateral sealing and cutting at a pair of heater blocks 18a, 18b; squeezing sections 27, 28 moving together with the heater blocks 18a, 18b; a vertical pillow packaging machine control section 40; and a lateral sealing / squeezing condition setting section. The lateral sealing / cutting section 18 comprises a heater block opening / closing mechanism, a heater block opening / closing servomotor 20M, a heater block elevating / lowering mechanism, and a heater block elevating / lowering servomotor 30M. The vertical pillow packaging machine control section 40 comprises a heater block operation control section. An elevating / lowering distance of the heater blocks 18a, 18b is proportional to a rotation angle of the heater block elevating / lowering servomotor 30M, and comprises a lateral sealing height setting section and a squeezing start height setting section.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a vertical pillow packaging machine that allows the squeezing conditions, such as the squeezing start position, squeezing length, and squeezing speed, to be adjusted as desired. [Background technology]

[0002] A vertical pillow packaging machine is a packaging machine that sends packaging material up and down (vertically) to form it into a tubular packaging material, supplies the packaged products vertically to fill the tubular packaging material one after another, and produces packages by sealing the tubular packaging material vertically in the top and bottom directions and sealing and cutting it horizontally in the left and right directions (horizontally). This vertical pillow packaging machine is equipped with a device that squeezes the part of the tubular packaging material that is to be transversely sealed just before the transverse seal is applied to prevent so-called pinching. In this pressing device, a pressing plate is attached to each of a pair of heater blocks, and the heater blocks are moved to press the tubular packaging material with the pressing plates. In the vertical pillow packaging machine, before the horizontal sealing is performed, the tubular packaging material is squeezed using a squeezing device; specifically, a pair of heater blocks are brought close to each other to sandwich the tubular packaging material between a pair of squeezing plates, and the heater blocks are lowered to lower the squeezing plates to squeeze the tubular packaging material, and then the pair of heater blocks are brought even closer to each other to sandwich the tubular packaging material between the heater blocks and the horizontal sealing is performed.

[0003] However, even if squeezing is performed using a squeezing device, if the lateral seal position (the height of the heater block, i.e., the vertical distance from the bottom end of the filling tube in which the packaged goods are filled to the heater block) is constant, there is a problem that pinching cannot be effectively prevented depending on the type of packaging, such as the type of packaged goods, and it is therefore desirable to adjust the lateral seal position depending on the type of packaging. Specifically, in the case of a package filled with flat packaged products such as potato chips, the horizontal seal position is raised and the height of the heater block is reduced, and the package is bulged, so that the packaged products are stacked horizontally inside the tubular packaging material, effectively preventing them from getting caught in the container when they are stacked vertically.In the case of a package filled with stick-shaped packaged products such as persimmon seeds or granular packaged products such as nuts, the horizontal seal position is lowered and the height of the heater block is increased, and the distance between the top of the pile of packaged products in the tubular packaging material and the horizontal seal is increased, effectively preventing the packaged products from jumping up and getting caught in the container. For this reason, proposals have been made to make it possible to adjust the horizontal seal position of vertical pillow packaging machines.

[0004] For example, Patent Document 1 (JP 2008-184167 A) discloses an intermittent or continuous operation vertical form-fill-seal packaging machine in which both edges of a packaging film are vertically sealed to form a packaging tube, and the film is lowered into the tube by a film feeding device and a horizontal seal (end seal) cutting device seals the upper edge of the packaged items filled into the packaging tube and the lower edge of the packaged items that will next be dropped into the packaging tube in two horizontal lines and cuts the middle, and the horizontal seal start position can be adjusted to any height. However, in the vertical form-fill-seal packaging machine of Patent Document 1, the movement of a pair of horizontal sealing heaters and a pair of squeezing plates attached below them is determined by a cam curve, and although the start position of the horizontal seal can be adjusted, the start position of squeezing by the squeezing plates, squeezing length, squeezing speed, etc. are determined by the cam curve and cannot be adjusted arbitrarily. For this reason, even if the starting position of the horizontal seal is the same, it is necessary to change the squeezing start position, squeezing length, squeezing speed, etc. in accordance with the type of packaged product, the size of the package, etc., so as to effectively prevent jamming without slowing down the production speed. For example, in the case of packaged products that are particularly susceptible to jamming, it is not possible to effectively prevent jamming by making the squeezing length longer than usual without slowing down the production speed.

[0005] Furthermore, Patent Document 2 (JP 2014-111464 A) discloses an intermittent vertical bag form fill seal packaging machine that temporarily stops the descent of the packaging tube during horizontal sealing and is equipped with a mechanism for adjusting the horizontal sealing start position to any height, a control device that can set the horizontal sealing start position to a height that is stored for each product item, and a setting display device that sets and stores the height of the horizontal sealing start position for each product item, wherein the control device has the function of switching the height of the horizontal sealing start position between when producing empty bags that are not filled with the packaged product and when producing bags filled with the packaged product. However, the vertical form fill seal packaging machine of Patent Document 2, like Patent Document 1, only adjusts the start position of the horizontal seal, and does not adjust the squeezing start position, squeezing length, squeezing speed, etc. In this case, since the vertical form-fill-seal packaging machine of Patent Document 2 does not determine the movement of the squeezing plate by a cam curve as in Patent Document 1, it is also possible to adjust the squeezing start position, squeezing length, squeezing speed, etc. in addition to the horizontal sealing start position. However, in the vertical form-fill-seal packaging machine of Patent Document 2, the horizontal sealer is raised and lowered by a crank mechanism and a horizontal sealer lifting servo motor that drives the crank mechanism, so the rotation angle (rotation speed) of the horizontal sealer lifting servo motor is not at all proportional to the lifting speed and distance of the horizontal sealer, making it difficult to arbitrarily adjust the squeezing start position, squeezing length, squeezing speed, etc. of the squeezing plate.

[0006] Furthermore, Patent Document 3 (JP 2013-43681 A) discloses a form-fill-seal machine that includes a pair of horizontal sealing blocks, a pair of squeezing members that move together with the horizontal sealing blocks, a motor for opening and closing the blocks, a motor for moving the blocks, etc., and that controls the horizontal sealing time to be constant even if the operating time of one cycle of the horizontal sealing blocks varies, and controls the moving speed of the horizontal sealing blocks and the movement of the tubular packaging film to ensure a constant squeezing amount (squeezing length) even if the length of the packaging bag is changed. However, the form-fill-seal machine of Patent Document 3 ensures a constant sealing time and a constant squeezing amount even if the operating time of one cycle or the length of the packaging bag changes, but it does not adjust the start position of the horizontal seal, the start position of squeezing, the squeezing length, the squeezing speed, etc. In this case, it is possible to consider adjusting the squeezing start position, squeezing length, squeezing speed, etc. in the form-fill-seal packaging machine of Patent Document 3, but Patent Document 3 only discloses a link mechanism as the movement mechanism for the horizontal seal block, and if the driving force (rotation) of the block movement motor is transmitted to the horizontal seal block via a link mechanism, then, as with the crank mechanism in the vertical form-fill-seal packaging machine of Patent Document 2, the rotation angle (rotation speed) of the block movement motor and the movement speed / distance of the horizontal seal block are not at all proportional, making it difficult to arbitrarily adjust the squeezing start position, squeezing amount (squeezing length), squeezing speed, etc. of the squeezing members. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2008-184167 A [Patent Document 2] JP 2014-111464 A [Patent Document 3] JP 2013-43681 A Summary of the Invention [Problem to be solved by the invention]

[0008] The problem that the present invention aims to solve is to, in a vertical pillow packaging machine equipped with a squeezing device and capable of adjusting the horizontal seal position, make it possible to arbitrarily adjust squeezing conditions such as the squeezing start position, squeezing length, and squeezing speed, thereby effectively preventing jamming while not slowing down the production speed. [Means for solving the problem]

[0009] The invention of claim 1 comprises tubular packaging material forming means for feeding packaging material in a vertical direction to form it into a tubular packaging material, product filling means for supplying products to be packaged in a vertical direction and filling the tubular packaging material with the products, vertical sealing means for applying a vertical seal to the tubular packaging material filled with the products, horizontal sealing means for sandwiching the tubular packaging material vertically sealed by the vertical sealing means between a pair of heater blocks and horizontally sealing and cutting the tubular packaging material, and The pair of heater blocks are attached to the underside of each of the heater blocks. Move with A pair A pressing member is provided. The pair of heater blocks are not close to each other and do not sandwich the tubular packaging material, but are in contact with each other and sandwich the tubular packaging material. The lateral seal of the cylindrical packaging material is performed by a squeezing member. R a means for squeezing the portion to be wrapped, and a vertical pillow packaging machine control unit for controlling the vertical pillow packaging machine body; a horizontal seal and pressing condition input means for inputting conditions for the horizontal seal and the pressing by the pair of pressing members; and a horizontal sealing / squeezing condition setting means for setting conditions for the horizontal sealing and the squeezing, the horizontal sealing means comprising a heater block opening and closing mechanism for opening and closing the pair of heater blocks, a heater block opening and closing servomotor for driving the heater block opening and closing mechanism, a heater block lifting mechanism for moving the pair of heater blocks in a vertical direction, and a heater block lifting servomotor for driving the heater block lifting mechanism, the vertical pillow packaging machine control unit comprising heater block operation control means for controlling rotation of the heater block opening and closing servomotor and rotation of the heater block lifting servomotor and for controlling operations of the pair of heater blocks and the squeezing member, a lifting distance of the pair of heater blocks by the heater block lifting mechanism is proportional to a rotation angle of the heater block lifting servomotor, and the horizontal sealing / squeezing condition setting means comprises Based on the horizontal seal height that specifies the position of the horizontal seal input from the horizontal seal and ironing condition input means, A horizontal seal height setting means for setting the horizontal seal height; The pressing start height is input from the horizontal seal / pressing condition input means, and specifies a pressing start position by the pair of pressing members. and a pressing start height setting means for setting a pressing start height, and the heater block operation control means is configured to set the horizontal seal height by the horizontal seal height setting means. fixed The above problem is solved by providing a vertical pillow packaging machine that controls the operation of the pair of heater blocks and the squeezing members in accordance with the horizontal seal height and the squeezing start height set by the squeezing start height setting means.

[0010] The invention of claim 2 is as follows: the horizontal seal / squeezing condition input means further includes a squeezing action timing input means for inputting a timing of the squeezing action by the pair of squeezing members in one cycle of operation of the pair of heater blocks, The horizontal sealing and ironing condition setting means further includes: Based on the timing of the squeezing motion input from the timing input means of the squeezing motion, The present invention solves the above-mentioned problems by providing a vertical pillow packaging machine equipped with a squeezing operation timing setting means for setting the timing of the squeezing operation.

[0011] The invention of claim 3 is as follows: the horizontal sealing / ironing condition input means further includes a heater block opening / closing timing input means for inputting the opening / closing timing of the pair of heater blocks in one cycle, The horizontal sealing and ironing condition setting means further includes: Based on the timing of opening and closing the pair of heater blocks input from the horizontal seal and ironing condition input means The above-mentioned problems are solved by providing a vertical pillow packaging machine equipped with a heater block opening / closing timing setting means for setting the timing for opening and closing the pair of heater blocks.

[0012] The invention of claim 4 solves the above-mentioned problem by providing a vertical pillow packaging machine in which the heater block operation control means controls the rotation of the servo motor for lifting and lowering the heater block in response to the opening and closing timing of the pair of heater blocks set by the heater block opening and closing timing setting means, and causes the heater block lifting mechanism to lift, lower, and stop the pair of heater blocks.

[0013] The invention of claim 5 solves the above-mentioned problem by providing a vertical pillow packaging machine in which the heater block lifting mechanism includes a support block that supports the heater block opening and closing mechanism, a timing belt connected to the support block via a connecting member, and a timing pulley across which the timing belt is stretched and which rotates with the rotation of a servo motor for lifting and lowering the heater block, and in which the timing belt moves with the rotation of the servo motor for lifting and lowering the heater block, thereby lifting and lowering the pair of heater blocks. Effect of the Invention

[0014] In the vertical pillow packaging machine of the invention described in claim 1, the lifting distance of a pair of heater blocks is proportional to the rotation angle of the servo motor for lifting the heater blocks, so that the horizontal seal height setting means can set the horizontal seal height and the squeezing start height setting means can set the squeezing start height in accordance with the type of package produced by the vertical pillow packaging machine.This allows the squeezing conditions, such as the squeezing start position and squeezing length of the squeezing members, to be adjusted as desired, resulting in the effect of producing packages without reducing production speed while effectively preventing jamming.

[0015] In the vertical pillow packaging machine of the invention described in claim 2, the squeezing action timing setting means can further set the timing of the squeezing action by the squeezing members, thereby providing the effect of allowing the squeezing speed by the squeezing members to be adjusted as desired. The squeezing operation timing setting unit 51a3 can set the timing of the squeezing operation by the squeezing plates 18c and 18d.

[0016] In the vertical pillow packaging machine of the invention described in claim 3, the heater block opening / closing timing setting means can set the timing for opening and closing the heater block, thereby providing the effect of allowing the timing of horizontal sealing to be adjusted as desired.

[0017] The vertical pillow packaging machine of the invention described in claim 4 has the same effects as the invention described in claim 3.

[0018] The vertical pillow packaging machine of the invention described in claim 5 has a further advantage in that the lifting distance of the pair of heater blocks can be easily made proportional to the rotation angle of the servomotor for lifting the heater blocks. [Brief description of the drawings]

[0019] [Figure 1] 1 is a diagram showing the configuration of a vertical pillow packaging machine of the present invention. [Diagram 2] 2 is a perspective view showing the overall configuration of the vertical pillow packaging machine body shown in FIG. 1. [Diagram 3]FIG. 3 is a perspective view of the horizontal seal and cut portion shown in FIG. 2. [Figure 4] 3A and 3B are front and rear views of a heater block, a block holder, and a squeezing unit. [Diagram 5] 4 is a block diagram showing the configuration of a vertical pillow packaging machine control unit 40 and an operation panel 50. FIG. [Figure 6] 13 is a screen configuration diagram showing an example of an operation screen for setting the horizontal sealing and squeezing conditions set by a horizontal sealing and squeezing condition setting unit 51a. FIG. [Figure 7] 4 is an explanatory diagram illustrating the configuration of a product parameter table stored in a storage unit 42. FIG. [Figure 8] 13 is an operation explanatory diagram illustrating an operation in which heater blocks 18a and 18b rise from the horizontal sealing position. FIG. [Figure 9] 11 is an explanatory diagram illustrating the squeezing operation of the cylindrical film TFi by the squeezing plates 18c and 18d. FIG. [Figure 10] 11 is an operation explanatory diagram illustrating the lateral sealing operation of the cylindrical film TFi by heater blocks 18a and 18b. FIG. [Figure 11] 10 is a timing chart showing the timing of raising and lowering and opening and closing of heater blocks 18a and 18b in one cycle. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] [Vertical pillow packaging machine configuration] Figure 1 is a diagram showing the configuration of the vertical pillow packaging machine of the present invention, which is a combination of a schematic front view of the vertical pillow packaging machine main body and a block of the control section, Figure 2 is an oblique view showing the overall configuration of the vertical pillow packaging machine main body shown in Figure 1, and Figure 3 is an oblique view of the horizontal sealing and cutting section shown in Figure 2. In the figure, 1 is a vertical pillow packaging machine, 10 is a vertical pillow packaging machine main body, 11 is a film (packaging material) supply section, 12 is a tension adjustment section, 12a is a rotating arm, 13 is a date printing section, 13a is a date printing device, 13b is a lifting roller, 14 is a packaged product supply section, 14a is a hopper, 14b is a filling tube, 15 is a tube making section, 15a is a tube making device (former), 15b is a pressing member, 15c is a slide roller, 16 is a film feed section, 16a is a pulley, 16b is a feed belt, 16M is a servo motor. 1, 17 is a vertical seal section, 17a and 17b are vertical seal blocks, 18 is a horizontal seal and cutting section, 18a and 18b are heater blocks, 18c and 18d are ironing plates, 19 is a package discharge section, 19a is a belt conveyor, 20 is a horizontal seal device, 20M is a servo motor, 20Ma is a rotating shaft, 21 is a block holder, 21a is a guide hole, 22 is a block holder, 23 is an opening and closing toggle mechanism, 23a is a rotating arm, 23b and 23c are driven arms, 24 is a holder drive block, 2 Reference numeral 5 denotes a support block, 25a and 25b denote frame portions, 25c denotes a connecting portion, 26a and 26b denote connecting rods, 27 and 28 denote ironing portions, 29 denotes a cutting device, 29a denotes a support plate, 29b denotes an air cylinder, 29c denotes a piston rod, 29d denotes a slider, 29e and 29f denote guide rods, 30 denotes a lifting device, 30M denotes a servo motor, 31a and 31b denote brackets, 32 denotes a timing belt, 32a denotes a belt gripping member, 33 denotes a connecting plate, 34 denotes a drive pulley, and 34a denotes a pulley shaft. Reference numeral 35 is a driven pulley, 35a is a pulley shaft, 36a and 36b are lifting guide rods, 40 is a vertical pillow packaging machine control unit, 50 is an operation panel, CL is a communication line, Fi is the film (packaging material), gr is a guide roller, MF is the rolled up film, Pc is the packaging body, TFi is a tubular film (tubular packaging material), ts is a vertical seal portion, ys is a horizontal seal portion, and in the figure, X is the left-right direction, Y is the up-down direction, and Z is the front-back direction, and in FIG. 1, the film portion is represented by a two-dot chain line. The vertical pillow packaging machine 1 is composed of a vertical pillow packaging machine main body 10 that produces a package Pc by unwinding film Fi from a winding film MF and packaging the packaged product, a vertical pillow packaging machine control unit 40 that controls the operation of the vertical pillow packaging machine main body 10, and an operation panel 50 that operates the vertical pillow packaging machine main body 10.

[0021] The vertical pillow packaging machine main body 10 is composed of a film (packaging material) supply section 11, a tension adjustment section 12, a printing section 13, a packaged product supply section 14, a tube making section 15, a packaging material feed section 16, a vertical sealing section 17, a horizontal sealing and cutting section 18, a package discharge section 19, etc. The film (packaging material) supply unit 11 includes a rolled-up packaging material supply device (not shown) that holds the rolled-up film MF, and pays out the film (packaging material) Fi from the rolled-up film MF. The take-up film supporting device includes a shaft (not shown) and a servo motor 11M which serves as the take-up film rotating means of the present invention. The servo motor 11M rotates the shaft, thereby rotating the take-up film MF attached to the shaft. The tension adjustment unit 12 is composed of a pair of rotating arms 12a, a dancer roller rotatably held by the rotating arms 12a, a fixed roller, a rotating rod, etc., and the rotating arms 12a rotate to adjust the film (packaging material) Fi. The date printing section 13 includes a date printing device 13a, a lifting roller 13b, etc., and prints the date on the film Fi. The packaged product supply section 14 is equipped with a filling tube 14b with a hopper 14a at the top, a packaged product insertion device (not shown), etc., and packaged products such as snacks inserted from the packaged product insertion device are received by the hopper 14a and filled into the filling tube 14b. The tube making section 15 is equipped with a tube making device 15a, a pressing member 15b, a slide roller 15c, etc., and the film Fi that is fed from the film supply section 11 and has the date printed by the date printing section 13 is guided by the slide roller 15c, formed into a cylindrical shape by the tube making device 15a, and pressed against the outer peripheral surface of the filling tube 14b by the pressing member 15b. The film feed section 16 has a pair of film feed mechanisms equipped with a pulley 16a, a feed belt 16b, a servo motor 16M, etc., which are arranged on both sides of the filling tube 14b, and the pulley 16a is rotated by the servo motor 16M to move the feed belt 16b, thereby feeding the film Fi wrapping around the outer surface of the filling tube 14b downward by a certain length. The vertical seal unit 17 includes vertical seal blocks 17a, 17b and a heater (not shown), and vertically seals both ends of the film Fi overlapped and wrapped around the outer periphery of the stuffing tube 14b to form vertical seal portions ts. The horizontal sealing and cutting section 18 is equipped with a horizontal sealing device 20 equipped with a pair of heater blocks 18a, 18b, and squeezing sections 27, 28 having a pair of squeezing plates 18c, 18d, a cutting device 29, and a lifting device 30 (details will be described later), and applies horizontal sealing to the vertically sealed tubular film TFi filled with the packaged goods to form a horizontally sealed portion ys, cuts the center of the horizontally sealed portion ys, and generates a package Pc filled with the packaged goods. The package discharge section 19 includes a belt conveyor 19a and the like, and discharges the package Pc by the belt conveyor 19a.

[0022] [Horizontal sealing device 20, cutting device 28, lifting device 30] The horizontal sealing device 20, the cutting device 29 and the lifting device 30 which constitute the horizontal sealing and cutting section 18 will be described. As shown in FIG. 3, the horizontal sealing device 20 is composed of a pair of heater blocks 18a, 18b, a servo motor 20M, block holders 21, 22, an opening / closing toggle mechanism 23, a holder drive block 24, a support block 25, connecting rods 26a, 26b, etc. In the horizontal sealing device 20, heaters (not shown) are embedded in heater blocks 18a and 18b. The heater block 18a is attached to the right side of a block holder 21, and the heater block 18b is attached to the left side of a block holder 22. The block holder 21 is connected to a holder drive block 24 by connecting rods 26a and 26b, and the block holder 22 is connected to the holder drive block 24 via an opening / closing toggle mechanism 23 and is supported slidably by the connecting rods 26a and 26b. The support block 25 is an integral block in which U-shaped frame portions 25a, 25b are connected by a connecting portion 25c, and connecting rods 26a, 26b are slidably supported by the frame portions 25a, 25b. In the opening / closing toggle mechanism 23, the servo motor 20M is attached to the underside of the connecting portion 25c of the support block 25, the rotating shaft 20Ma of the servo motor 20M is inserted through the connecting portion 25c and fitted into the shaft hole of the rotating arm 23a, one ends of the driven arms 23b, 23c are rotatably attached to both ends of the rotating arm 23a, the other end of the driven arm 23b is rotatably attached to the block holder 22, and the other end of the driven arm 22c is rotatably attached to the holder drive block 24. In the horizontal sealing device 20, when the rotating shaft 20Ma of the motor 20M is rotated to rotate the rotating arm 23a of the opening / closing toggle mechanism 23, the block holder 22 moves along the connecting rods 26a, 26b via the driven arm 23b. At the same time, the holder drive block 24 moves via the driven arm 23c, and the connecting rods 26a, 26b move along the frames 25a, 25b of the support block 25, and the block holder 21 moves in the opposite direction to the block holder 22. This causes the heater blocks 18a and 18b to be opened and closed (connected and separated). In this case, servo motor 20M serves as the heater block opening / closing servo motor of the present invention, and block holders 21, 22, opening / closing toggle mechanism 23, holder drive block 24, support block 25, and connecting rods 26a, 26b constitute the heater block opening / closing mechanism of the present invention.

[0023] 4(a) and (b) are front and rear views of the heater block, block holder, and squeezing unit, in which 18am and 18bm are central grooves, 27a1, 27a2, 28a1, and 28a2 are moving rods, 27at1, 27at2, 28at1, and 28at2 are flanges, 27b1, 27b2, 27c1, 27c2, 28b1, 28b2, 28c1, and 28c2 are retaining plates, and 27s1, 27s2, 28s1, and 28s2 are springs. As shown in FIG. 4, squeezing unit 27 and squeezing unit 28 have the same structure and form a pair, with squeezing unit 27 attached to the lower side of heater block 18a and squeezing unit 28 attached to the lower side of heater block 18b. In the squeezing section 27, a pair of movable rods 27a1, 27a2 are attached to the left side of the heater block 18a. The movable rod 27a1 has a flange 27at1 attached thereto and is inserted into holding plates 27b1, 27c1 attached to the block holder 21. A spring 27s1 is attached between the flange 27at1 and the holding plate 27b1. The movable rod 27a2 has a flange 27at2 attached thereto and is inserted into holding plates 27b2, 27c2 attached to the block holder 21. A spring 27s2 is attached between the flange 27at2 and the holding plate 27b2. In the squeezing section 28, a pair of movable rods 28a1, 28a2 are attached to the right side of the squeezing plate 18d. The movable rod 28a1 has a flange 28at1 attached thereto and is inserted into holding plates 28b1, 28c1 attached to the block holder 22. A spring 28s1 is attached between the flange 28at1 and the holding plate 28b1. The movable rod 28a2 has a flange 28at2 attached thereto and is inserted into holding plates 28b2, 28c2 attached to the block holder 28. A spring 28s2 is attached between the flange 28at2 and the holding plate 28b2. The squeezing plate 18c protrudes to the right (X direction) from the heater block 18a, and the squeezing plate 18d protrudes to the left (X direction) from the heater block 18b. As a result, the squeezing units 27, 28 move together with the heater blocks 18a, 18b, and as the heater blocks 18a, 18b approach each other, the squeezing plates 18c, 18d also approach each other, and before the opposing surfaces of the heater blocks 18a, 18b come into contact, the opposing surfaces of the squeezing plates 18c, 18d come into contact. When the heater blocks 18a, 18b approach each other further, in the squeezing units 27, 28, the springs 27s1, 27s2, 28s1, 28s2 contract with the opposing surfaces of the squeezing plates 18c, 18d in contact, and the heater blocks 18a, 18b can approach each other until their opposing surfaces come into contact.

[0024] As shown in FIG. 3, the cutting device 29 is composed of a support plate 29a, an air cylinder 29b, a piston rod 29c, a slider 29d, and guide rods 29e and 29f. In the cutting device 29, an air cylinder 29b is attached to the left side of the support plate 29a, and guide rods 29e, 29f are attached to the right side of the support plate 29a. The guide rods 29e, 29f are inserted into a slider 29d, and their tips are attached to the wall surface (not shown) of the guide hole 21a of the block holder 21. The slider 29d is slidably held by guide rods 29e, 29f, and the tip of the piston rod 29c of the air cylinder 29b is attached to its left side. By operating the air cylinder 29b, the slider 29d slides along the guide rods 29e, 29f and moves within the guide hole 21a of the block holder 21. Furthermore, a T-shaped cutting knife (not shown) is attached to the upper center of the back right side of the slider 29d. Then, when the horizontal sealing device 20 is operated and the heater blocks 18a, 18b are closed with the tubular film TFi sandwiched therebetween, the air cylinder 29b of the cutting device 27 is actuated to move the slider 29d. As a result, the cutting knife protrudes from the central groove 18am of the heater block 18a and enters the central groove 18bm of the heater block 18b, thereby cutting the tubular film TFi.

[0025] As shown in FIG. 3, the lifting device 30 is made up of a servo motor 30M, brackets 31a and 31b, a timing belt 32, a connecting plate 33, a driving pulley 34, a driven pulley 35, lifting guide rods 36a and 36b, and the like. In the lifting device 30, brackets 31a, 31b are arranged to face the rear right side of the horizontal sealing device 20 and are attached to the frame (not shown) of the vertical pillow packaging machine main body 10, a servo motor 30M is attached to the upper back surface of bracket 31a, pulley shaft 34a of drive pulley 34 is rotatably held at the upper parts of brackets 31a, 31b, and pulley shaft 34a is connected to the rotating shaft of servo motor 30M, pulley shaft 35a of driven pulley 35 is rotatably held at the lower parts of brackets 31a, 31b, and a timing belt 32 is stretched between drive pulley 34 and driven pulley 35. A connecting plate 33 is attached to the right side surface of the frame portion 25a of the support block 25 of the horizontal sealing device 20, and a timing belt 32 is gripped on the upper portion of the connecting plate 33 by a belt gripping member 32a. Furthermore, lift guide rods 36a, 36b are attached to the frame of the vertical pillow packaging machine body 10, and support blocks 25a, 25b are fitted into the lift guide rods 36a, 36b. In the lifting device 30, when the servo motor 30M is rotated, the drive pulley 34 rotates, the timing belt 32 moves, and the support block 25 together with the connecting plate 33 clamped to the timing belt 32 rises and falls along the lifting guide rods 36a, 36b, and the heater blocks 18a, 18b of the horizontal sealing device 20 also rise and fall, and the lifting distance of the heater blocks 18a, 18b is proportional to the rotation angle of the servo motor 30M. In this case, servo motor 30M becomes the servo motor for lifting and lowering the heater block of the present invention, and brackets 31a, 31b, timing belt 32, connecting plate 33, drive pulley 34, driven pulley 35, lift guide rods 36a, 36b, etc. constitute the heater block lifting mechanism of the present invention.

[0026] [Vertical pillow packaging machine control unit 40, operation panel 50] FIG. 5 is a block diagram showing the configuration of vertical pillow packaging machine control unit 40 and operation panel 50, in which 41 is a calculation control unit, 41a is a drive equipment control unit, 41b is a heater block operation control unit, 42 is a memory unit, 43 is a transmission / reception unit, 51 is a computer, 51a is a horizontal seal / squeezing condition setting unit, 51a1 is a horizontal seal height setting unit, 51a2 is a squeezing start height setting unit, 51a3 is a squeezing operation timing setting unit, 51a4 is a heater block opening / closing timing setting unit, 53 is a transmission / reception unit, and 54 is an input / display unit. The vertical pillow packaging machine control unit 40 includes an arithmetic and control unit 41, a memory unit 42, and a transmission and reception unit 43, and the arithmetic and control unit 41 includes a drive device control unit 41a, and a heater block operation control unit 41b. The drive equipment control unit 41a controls the operation of the drive equipment of the vertical pillow packaging machine main body 10, such as the servo motor 16M of the film feed unit 16 and various heaters of the vertical sealing unit 17 and the horizontal sealing and cutting unit 18, based on parameters (numeric values ​​representing the production capacity, bag length, heater temperature, etc. set for each product produced by the vertical pillow packaging machine main body 10) registered in the product parameter table of the memory unit 42 for the product set on the operation panel 50. The heater block operation control unit 41b controls the rotation timing, speed, etc. of the servo motors 20M, 30M in accordance with the conditions set in the lateral sealing / pressing condition setting unit 51a on the operation panel 50, thereby controlling the operation of the heater blocks 18a, 18b and the pressing plates 18c, 18d. The memory unit 42 stores a product parameter table, a production information table, etc., and in the product parameter table, the No. (registration number), product name, production capacity, bag length, heater temperature, horizontal sealing and squeezing conditions, etc., of the products produced by the vertical pillow packaging machine 1 are registered (details will be described later), and in the production information table, production results such as the output, empty bags, waste bags, operating rate, operating time, stop time, waiting time, etc., of the products actually produced are registered. The transmission / reception unit 43 communicates with the transmission / reception unit 53 of the operation panel 50 via the communication line CL, transmits various data from the calculation / control unit 41 to the transmission / reception unit 53 of the operation panel 50, and also receives various data transmitted from the transmission / reception unit 53 and sends it to the calculation / control unit 41.

[0027] The operation panel 50 includes a computer 51, a transmitting / receiving unit 53, and an input / display unit . The computer 51 includes an arithmetic processing unit and a memory unit, and is loaded with a dedicated program corresponding to the vertical pillow packaging machine main body 10. The computer 51 performs various processes and controls the operation panel 50 in an integrated manner. The calculation processing unit of the computer 51 has a horizontal sealing / squeezing condition setting unit 51a, which has a horizontal seal height setting unit 51a1, a squeezing start height setting unit 51a2, a squeezing operation timing setting unit 51a3, and a heater block opening / closing timing setting unit 51a4. The horizontal seal height setting unit 51a1 sets the position of the horizontal seal on the vertically sealed film Fi, that is, the horizontal seal height that specifies the up-down position (Y direction) of the heater blocks 18a, 18b when applying the horizontal seal to the vertically sealed film Fi. The squeezing start height setting unit 51a2 sets a squeezing start height that specifies the vertical position (squeezing start position) at which the squeezing plates 18c, 18d start squeezing the vertically sealed cylindrical film TFi. The squeezing operation timing setting unit 51a3 sets the timing of the squeezing operation by the squeezing plates 18c, 18d in one cycle of operation of the heater blocks 18a, 18b, i.e., a cycle (hereinafter referred to as "one cycle") in which the vertically sealed tubular film TFi filled with vertically packaged products is horizontally sealed and cut in the horizontal sealing and cutting unit 18 to generate one package Pc. Heater block opening / closing timing setting unit 51a4 sets the timing at which heater blocks 18a, 18b move in the left-right direction (X direction) to open and close in one cycle. The input display unit 54 has a touch panel type display screen and displays various screens created by a dedicated program built into the computer 51, such as an operation screen for setting the horizontal sealing and squeezing conditions set by the horizontal sealing and squeezing condition setting unit 51a (horizontal sealing position, squeezing start position, timing of the squeezing operation, opening and closing timing of the heater blocks 18a, 18b, etc.).

[0028] FIG. 6 is a screen configuration diagram showing an example of an operation screen for setting the horizontal sealing and squeezing conditions set by the horizontal sealing and squeezing condition setting unit 51a, where (a) in the figure shows the operation screen for the product name "AAAA" and (b) in the figure shows the operation screen for the product name "BBBB". In the figure, 60 is a horizontal sealing and squeezing condition setting screen, 61 is a display unit, 62 to 64, 65a to 68a, 65b to 68b are input display boxes, and 69a to 69c are buttons (switches). As shown in Fig. 6, the display section 61 at the top of the horizontal sealing / squeezing condition setting screen 60 displays the name of the product being produced by the vertical pillow packaging machine 1, production capacity, and bag length operating status. Specifically, Fig. 6(a) displays the product name "AAAA", "production capacity 100 bags / min", and "bag length 120 mm", while Fig. 6(b) displays the product name "BBBB", "production capacity 80 bags / min", and "bag length 120 mm". The input display boxes 62 to 64, 65a to 68a, and 65b to 68b display the lateral sealing and squeezing conditions set by the lateral sealing and squeezing condition setting unit 51a. Specifically, the input display box 62 labeled "squeezing start height" displays the squeezing start height hs (the distance from the reference positions of the heater blocks 18a, 18b to the position where squeezing starts) set by the squeezing start height setting unit 51a2 (shown as "20" mm in Figures 6(a) and (b)). The input display box 63 labeled "Horizontal seal height" displays the horizontal seal height hy (the distance from the reference position of the heater blocks 18a, 18b to the position where the horizontal seal is performed) set by the horizontal seal height setting unit 51a1 (in Figures 6(a) and (b) it is displayed as "100" mm). The input display box 64 labeled "Lowest Height" displays the distance from the reference position of the heater blocks 18a, 18b to the lowest position (in FIG. 6(a) it is displayed as "100" mm, and in FIG. 6(b) it is displayed as "105" mm.

[0029] Further, input display boxes 65a and 65b labeled with "squeezing timing" and "ON" and "OFF" display the timing of the squeezing action set by squeezing action timing setting unit 51a3, that is, the timing of the start and end of the squeezing action of the cylindrical film TFi by squeezing units 27 and 28 (squeezing plates 18c and 18d) in one cycle (in FIGS. 6(a) and 6(b), "45" is displayed in input display box 65a, and "70" is displayed in input display box 65b). The input display boxes 66a, 66b, which are marked with "Closing 1 Timing," "ON," and "OFF," display the timing at which the heater blocks 18a, 18b close for the squeezing operation set by the heater block opening / closing timing setting unit 51a4, i.e., the timing at which the heater blocks 18a, 18b start to move in the closing direction and the timing at which they stop moving in order to perform the squeezing operation of the tubular film TFi by the squeezing units 27, 28 in the above-mentioned one cycle (in Figures 6(a) and (b), "40" is displayed in the input display box 66a, and "45" is displayed in the input display box 66b). The input display boxes 67a, 67b, which are marked with "Closing 2 Timing", "ON", and "OFF", display the timing at which the heater blocks 18a, 18b close to perform the lateral seal set by the heater block opening / closing timing setting unit 51a4, i.e., the timing at which the heater blocks 18a, 18b start to move in the closing direction and the timing at which they stop moving in order to perform lateral sealing on the tubular film TFi by the heater blocks 18a, 18b in the above-mentioned one cycle (in Figures 6(a) and (b), "70" is displayed in the input display box 67a, and "75" is displayed in the input display box 67b). The input display boxes 68a, 68b, which are marked with "Opening timing", "ON", and "OFF", display the timing at which the heater blocks 18a, 18b open to complete the lateral sealing set by the heater block opening / closing timing setting unit 51a4, i.e., the timing at which the heater blocks 18a, 18b start to move in the opening direction and the timing at which they stop moving to complete the lateral sealing of the tubular film TFi by the heater blocks 18a, 18b in the above-mentioned one cycle (in FIG. 6(a), "90" is displayed in the input display box 68a and "00" is displayed in the input display box 68b; in FIG. 6(b), "90" is displayed in the input display box 68a and "95" is displayed in the input display box 68b). It should be noted that button 69a is a button for displaying a timing graph (timing chart) of the squeezing action by squeezing sections 27, 28 (squeezing plates 18c, 18d) and the opening and closing action of heater blocks 18a, 18b in the above-mentioned one cycle, button 69b is a button for displaying the top of the operation screen on input display section 54 of operation panel 50, and button 69c is a button for displaying the previous operation screen on input display section 54 of operation panel 50.

[0030] FIG. 7 is an explanatory diagram illustrating the configuration of a product parameter table stored in the storage unit 42. As shown in FIG. 7, the product parameter table registers No. (registration number), product name, production capacity, bag length, timing (squeezing ON, squeezing OFF, closing 1 ON, closing 1 OFF, closing 2 ON, closing 2 OFF, opening ON, opening OFF), etc. However, the item names themselves, such as "No. (registration number)", "product name", "production capacity", "bag length", "timing", "squeezing ON", "squeezing OFF", "closing 1 ON", "closing 1 OFF", "closing 2 ON", "closing 2 OFF", "opening ON", and "opening OFF", are not registered, and only the parts excluding the item names are registered. The No. is a number that identifies the product that the vertical pillow packaging machine 1 (vertical pillow packaging machine main body 10) produces, and is available in the range of 01 to 99. The No. and product name are entered from the product name registration screen displayed on the input display unit 54 of the operation panel 50, and are transmitted from the transceiver unit 53 to the vertical pillow packaging machine control unit 40 via the communication line CL, received by the transceiver unit 43, and registered in the product parameter table in the memory unit 42. The numerical values ​​for production capacity, bag length, etc. are parameters that indicate the conditions for operating the driving equipment (motors, etc.) of the vertical pillow packaging machine main body 10. For example, the "production capacity" parameter "100" means that 100 units (bags) are produced per minute, and the "bag length" parameter "120" means that the length of the package Pc (one bag) is 120 mm. The squeezing start height is input from an input display box 62 of the horizontal seal / squeezing condition setting screen 60 shown in FIG. 6 and is the squeezing start height hs set by the squeezing start height setting unit 51a2, the horizontal seal height is input from an input display box 63 and is the horizontal seal height hy set by the horizontal seal height setting unit 51a1, and the lowest position is the distance input from an input display box 64 (the distance from the reference position of the heater blocks 18a, 18b to the lowest position). In other words, when a new numerical value is entered in the input display boxes 62, 63, or an already entered numerical value is changed, the squeezing start height setting unit 51a2 and the horizontal seal height setting unit 51a1 send the entered numerical values ​​to the transceiver unit 53, which transmits them to the vertical pillow packaging machine control unit 40 via the communication line CL, receives them by the transceiver unit 43, and registers them in the product parameter table of the memory unit 42 as the squeezing start height hs and the horizontal seal height hy.

[0031] Of the timings, squeezing ON and squeezing OFF are input from input display boxes 65a, 65b of the horizontal seal / squeezing condition setting screen 60 shown in FIG. 6, and are the squeezing operation timings set by the squeezing operation timing setting unit 51a3. In other words, when a new numerical value is entered from the input display boxes 65a, 65b, or an already entered numerical value is changed, the squeezing operation timing setting unit 51a3 sends the entered numerical value to the transceiver unit 53, which transmits it to the vertical pillow packaging machine control unit 40 via the communication line CL, receives it by the transceiver unit 43, and registers it in the product parameter table of the memory unit 42 as the timing for squeezing ON or squeezing OFF. Among the timings, close 1 ON, close 1 OFF, close 2 ON, close 2 OFF, open ON, and open OFF are input from input display boxes 66a, 66b, 67a, 67b, 68a, and 68b on the horizontal seal / squeezing condition setting screen 60 shown in FIG. 6, and are the timings at which heater blocks 18a and 18b close for the squeezing operation set by heater block opening / closing timing setting unit 51a4. In other words, when a new numerical value is entered from input display boxes 66a, 66b, 67a, 67b, 68a, 68b, or an already entered numerical value is changed, heater block opening / closing timing setting unit 51a sends the entered numerical value to transceiver unit 53, which transmits it to vertical pillow packaging machine control unit 40 via communication line CL, receives it by transceiver unit 43, and registers it in the product parameter table of memory unit 42 as timing Close 1 ON, Close 1 OFF, Close 2 ON, Close 2 OFF, Open ON, Open OFF.

[0032] [Operation of horizontal seal and cutting unit 18] 8 to 11 are operation explanatory diagrams illustrating the operation of the heater blocks 18a, 18b (squeezing plates 18c, 18d) in one cycle (FIG. 8 shows the operation of the heater blocks 18a, 18b rising from the lateral sealing position, FIG. 9 shows the squeezing operation of the tubular film TFi by the ironing plates 18c, 18d, and FIG. 10 shows the lateral sealing operation of the tubular film TFi by the heater blocks 18a, 18b). FIG. 11 is a timing chart showing the timing of the rising and lowering (movement in the Y direction) and opening and closing (movement in the X direction) of the heater blocks 18a, 18b in one cycle (FIG. 11(a) shows the timing of the rising and lowering (movement in the Y direction) and opening and closing (movement in the X direction) of the heater blocks 18a, 18b in one cycle for the product name "AAAA" shown in FIG. 6(a). 8 to 10, CP is the packaged product, the tubular film TFi and the packaged product CP are shown in grey, and the heater blocks 18a, 18b etc. before movement are shown by dashed double-dashed lines. In FIG. 11, the scale shown at the top indicates the cycle time divided into 100 parts (one cycle is 0.5 seconds in FIG. 11(a) and 0.75 seconds in FIG. 11(b)), and t0 to t7 are the elapsed time of one cycle. Hereinafter, the operation of the transverse sealing and cutting section 18 (the transverse sealing device 20, the cutting device 28, and the lifting device 30) will be described with reference to FIGS. Figure 8(a) shows the state of the heater blocks 18a, 18b (squeezing plates 18c, 18d) at the point when the production of one packaging body Pc has finished and the production of the next packaging body Pc has begun, i.e., at the start of one cycle, and corresponds to time t0 in Figure 11. As shown in FIG. 8(a), at the start of one cycle (time t0), the heater blocks 18a, 18b (the centers of the heater blocks 18a, 18b in the Y direction) are at a transverse seal position P1 that is separated from the reference position P0 by the transverse seal height hy. In this case, the reference position P0 is the uppermost position in the lifting device 30 to which the heater blocks 18a, 18b can be raised, and the horizontal seal height hy is the horizontal seal height set by the horizontal seal height setting unit 51a1 and registered in the product parameter table of the memory unit 42, and for both products "AAAA" and "BBBB", the horizontal seal height hy is 100 mm (see Figure 7).

[0033] First, when one cycle starts, the heater block operation control section 41b rotates the servo motor 30M to raise the heater blocks 18a and 18b. As shown in FIG. 8(b), when heater blocks 18a, 18b are rising, at time t1, heater block operation control section 41b rotates servo motor 20M to move heater blocks 18a, 18b in the closing direction. After that, at time t2, heater block operation control section 41b stops the rotation of servo motors 20M and 30M, and stops the lifting and closing operations of heater blocks 18a and 18b. At this time, as shown in FIG. 9(a), the positions of heater blocks 18a, 18b in the Y direction are at squeezing start position P2, which is a position away from reference position P0 by squeezing start height hs, and the squeezing height hs is the "squeezing start height" set by squeezing start height setting unit 51a2 and registered in the product parameter table of memory unit 42, and for both products "AAAA" and "BBBB", the squeezing start height hs is 20 mm (see FIG. 7). Time t1 is the timing of "Close 1 ON" in the product parameter table set by heater block opening / closing timing setting section 51a4, and time t1 is "40" for both products "AAAA" and "BBBB". Time t2 is the timing of “Squeeze ON” in the product parameter table set by the squeeze operation timing setting unit 51a3, and is also the timing of “Close 1 OFF” registered in the product parameter table set by the heater block opening / closing timing setting unit 51a4, and for both products “AAAA” and “BBBB”, time t2 is “45”. The heater blocks 18a, 18b are at a position where they have moved in the closing direction (X direction) by a distance s1, and the cylindrical film TFi is sandwiched between the ironing plates 18c, 18d and ironed. On the other hand, from time t0 to t1, the drive equipment control unit 41a rotates the servo motor 16M to feed the tubular film TFi downward a predetermined length, and the packaged product CP is supplied from the packaged product supply unit 14, and the packaged product CP is filled into the tubular film TFi. At this time, if the packaged products CP are rod-shaped or the like, and the packaged products CP are not lined up and filled without gaps in the cylindrical film TFi, the packaged products CP will be piled up high as shown in Figure 8(b).

[0034] Next, at time t2, the heater block operation control unit 41b stops the rotation of the servo motor 30M and simultaneously rotates it in the reverse direction, lowering the heater blocks 18a and 18b while the squeezing plates 18c and 18d are holding the tubular film TFi between them to start the squeezing operation, and at time t3, stops the rotation of the servo motor 30M and stops the descent of the heater blocks 18a and 18b, ending the squeezing operation. By the squeezing action of the squeezing plates 18c and 18d, the packaged products CP piled high inside the cylindrical film TFi are aligned and packed tightly together (see FIG. 8(b)). At this time, as shown in FIG. 9(b), the positions of the heater blocks 18a, 18b in the Y direction are at a transverse seal position P1 that is spaced apart from the reference position P0 by the transverse seal height hy. Meanwhile, at time t3, the heater block operation control unit 41b rotates the servo motor 20M to move the heater blocks 18a, 18b in the closing direction, and at time t4, stops the rotation of the servo motor 20M to stop the closing operation of the heater blocks 18a, 18b. At this time, as shown in FIG. 10(a), the springs 27s1 (27s2), 28s1 (28s2) of the squeezing portions 27, 28 contract, and while the squeezing plates 18c, 18d are clamping the tubular film TFi, the heater blocks 18a, 18b move in the closing direction (X direction) by a distance s2 to clamp the tubular film TFi and begin lateral sealing of the tubular film TFi. Time t3 is the timing of “Squeeze OFF” in the product parameter table set by the squeeze operation timing setting unit 51a3, and is also the timing of “Close 2 ON” registered in the product parameter table set by the heater block opening / closing timing setting unit 51a4, and for both products “AAAA” and “BBBB”, time t3 is “70”.

[0035] After that, at time t5, the heater block operation control unit 41b rotates the servo motor 20M in the reverse direction, moving the heater blocks 18a, 18b in the opening direction, completing the lateral sealing of the tubular film TFi and forming the lateral seal portion ys, and at time t6, stops the rotation of the servo motor 20M, stopping the opening operation of the heater blocks 18a, 18b. At this time, as shown in FIG. 10(b), the Y-direction positions of the heater blocks 18a and 18b are at a transverse seal position P1 that is a transverse seal height hy away from the reference position P0, and the heater blocks 18a and 18b are at a position separated in the X-direction by the initial distance (s1+s2). Time t5 is the "open ON" timing registered in the product parameter table set by heater block opening / closing timing setting unit 51a4, and is "95" for product "AAAA" and "90" for product "BBBB". Time t6 is the "open OFF" timing registered in the product parameter table set by heater block opening / closing timing setting unit 51a4, and is "00" for product "AAAA" and "95" for product "BBBB". As a result, for product "AAAA," since the "minimum lowering height" and "horizontal seal height" registered in the product parameter table are the same "100," heater blocks 18a and 18b do not descend from the horizontal seal position P1, and one cycle ends at time t6. Furthermore, for product "BBBB," since the "minimum descent height" registered in the product parameter table is "105," which is greater than the "horizontal seal height," at time t6, heater blocks 18a, 18b descend a further 5 mm from the horizontal seal position P1, and the descent stops at time t7, completing one cycle.

[0036] As described above, in the vertical pillow packaging machine 1, the lifting distance of the heater blocks 18a, 18b is proportional to the rotation angle of the servo motor 30M, so that in accordance with the type of package Pc produced by the vertical pillow packaging machine 1, the horizontal seal height setting unit 51a1 can set the horizontal seal height, the squeezing start height setting unit 51a2 can set the squeezing start height, the squeezing operation timing setting unit 51a3 can set the timing of the squeezing operation by the squeezing plates 18c, 18d, and the heater block opening and closing timing setting unit 51a4 can set the timing of the opening and closing of the heater blocks 18a, 18b. As a result, before the horizontal seal is applied by the heater blocks 18a, 18b, the squeezing conditions for the tubular film TFi, such as the squeezing start position, squeezing length, and squeezing speed, can be arbitrarily adjusted, and the package Pc can be produced without reducing the production speed while effectively preventing jamming. [Industrial Applicability]

[0037] The vertical pillow packaging machine of the present invention can arbitrarily adjust the squeezing conditions, such as the squeezing start position, squeezing length, and squeezing speed, effectively preventing jamming without slowing down the production speed, and can be used in vertical pillow packaging machines that are equipped with a squeezing device and have adjustable horizontal seal positions. [Explanation of symbols]

[0038] 1 Vertical pillow packaging machine 10 Vertical pillow packaging machine body 11 Film (packaging material) supply section 12 Tension adjustment section 12a Rotating arm 13 Date printing section 13a Date Printing Device 13b Lifting roller 14 Packaged product supply section 14a Hopper 14b Filling cylinder 15 Cylinder manufacturing section 15a Tube maker (former) 15b Holding member 15c Slide roller 16 Film feed section 16a Pulley 16b Feed belt 16M servo motor 17 Vertical seal part 17a, 17b Vertical seal block 18 Horizontal seal and cutting section 18a, 18b Heater block 18am, 18bm center groove 18c, 18d ironing board 19 Package discharge section 19a Conveyor belt 20 Horizontal sealing device 20M servo motor 20Ma Rotating Axis 21 Block Holder 21a Guide hole 22 Block holder 23 Opening and closing toggle mechanism 23a Rotating arm 23b, 23c Follower arm 24 Holder drive block 25 Support Block 25a, 25b frame 25c connection part 26a, 26b Connecting rod 27, 28 Stroking Department 27a1, 27a2, 28a1, 28a2 Moving rod 27at1, 27at2, 28at1, 28at2 Tsuba 27b1, 27b2, 27c1, 27c2, 28b1, 28b2, 28c1, 28c2 retaining plate 27s1, 27s2, 28s1, 28s2 springs 29 Cutting device 29a Support plate 29b Air cylinder 29c Piston rod 29d Slider 29e, 29f guide rod 30 Lifting device 30M servo motor 31a, 31b bracket 32 Timing belt 32a Belt clamping member 33 Connecting plate 34 Drive pulley 34a Pulley shaft 35 Driven pulley 35a Pulley shaft 36a, 36b Lifting guide rod 40 Vertical pillow packaging machine control section 41 Calculation control unit 41a Drive device control section 41b Heater block operation control section 42 Storage section 43 Transmitter / receiver 50 Operation Panel 51 Computer 51a Horizontal seal and ironing condition setting section 51a1 Horizontal seal height setting part 51a2 Squeezing start height setting part 51a3 Squeezing action timing setting section 51a4 Heater block opening / closing timing setting section 53 Transmitter / receiver 54 Input display section 60 Horizontal seal and ironing condition setting screen 61 Display section 62~64, 65a~68a, 65b~68b Input display box 69a~69c Buttons (switches) CL communication line CP packaged product Fi film (packaging material) gr Guide roller MF Winding Film PC packaging TC1~TC4 Timing chart TFi cylindrical film (cylindrical packaging material) ts Vertical seal part ys Horizontal seal part

Claims

1. A cylindrical packaging material forming means for feeding the packaging material in a vertical direction to form the packaging material into a cylindrical packaging material; A packaged product filling means for supplying the packaged product in a vertical direction and filling the packaged product into the tubular packaging material; A vertical sealing means for applying a vertical seal to the tubular packaging material filled with the packaged product in an up-down direction; a horizontal sealing means for sandwiching the tubular packaging material that has been vertically sealed by the vertical sealing means between a pair of heater blocks and performing a horizontal seal in the left-right direction and cutting the tubular packaging material; a pressing means for pressing a portion of the tubular packaging material where the transverse seal is to be applied by the pair of pressing members which are attached to the undersides of the pair of heater blocks and move together with the pair of heater blocks, and which sandwich and contact the tubular packaging material when the pair of heater blocks are not close to each other and do not sandwich the tubular packaging material; A vertical pillow packaging machine control unit that controls the vertical pillow packaging machine main body; a horizontal seal / squeezing condition input means for inputting conditions for the horizontal seal and squeezing by the pair of squeezing members; a horizontal seal / squeezing condition setting means for setting the conditions for the horizontal seal and the squeezing based on the conditions for the horizontal seal and the squeezing input from the horizontal seal / squeezing condition input means, The horizontal sealing means is a heater block opening / closing mechanism for opening and closing the pair of heater blocks; a heater block opening / closing servo motor for driving the heater block opening / closing mechanism; a heater block lifting mechanism for moving the pair of heater blocks in a vertical direction; a heater block lifting servo motor for driving the heater block lifting mechanism; Equipped with The vertical pillow packaging machine control unit includes a heater block operation control means for controlling the rotation of the servo motor for opening and closing the heater block and the rotation of the servo motor for lifting and lowering the heater block, and for controlling the operation of the pair of heater blocks and the squeezing member, a distance by which the pair of heater blocks are lifted by the heater block lifting mechanism is proportional to a rotation angle of the heater block lifting servo motor, The horizontal sealing and squeezing condition setting means is a horizontal seal height setting means for setting the horizontal seal height based on a horizontal seal height that specifies the position of the horizontal seal input from the horizontal seal and ironing condition input means; a pressing start height setting means for setting the pressing start height based on a pressing start height that specifies a pressing start position by the pair of pressing members inputted from the horizontal seal / squeezing condition input means, A vertical pillow packaging machine characterized in that the heater block operation control means controls the operation of the pair of heater blocks and the squeezing member in accordance with the horizontal seal height set by the horizontal seal height setting means and the squeezing start height set by the squeezing start height setting means.

2. The horizontal sealing / squeezing condition input means further includes a squeezing operation timing input means for inputting the timing of the squeezing operation by the pair of squeezing members in one cycle of operation of the pair of heater blocks, 2. The vertical pillow packaging machine according to claim 1, wherein the horizontal sealing / squeezing condition setting means further includes a squeezing operation timing setting means for setting the timing of the squeezing operation based on the timing of the squeezing operation input from the squeezing operation timing input means.

3. The horizontal sealing / squeezing condition input means further includes a heater block opening / closing timing input means for inputting the timing of opening and closing of the pair of heater blocks in the one cycle, The vertical pillow packaging machine according to claim 2, characterized in that the horizontal sealing / squeezing condition setting means further includes a heater block opening / closing timing setting means for setting the opening / closing timing of the pair of heater blocks based on the opening / closing timing of the pair of heater blocks input from the horizontal sealing / squeezing condition input means.

4. 4. The vertical pillow packaging machine according to claim 3, wherein the heater block operation control means controls the rotation of the servo motor for lifting and lowering the heater block in response to the timing for opening and closing the pair of heater blocks set by the heater block opening and closing timing setting means, and causes the heater block lifting mechanism to lift, lower, and stop the pair of heater blocks.

5. 5. The vertical pillow packaging machine according to claim 1, wherein the heater block lifting mechanism comprises a support block that supports the heater block opening and closing mechanism, a timing belt connected to the support block via a connecting member, and a timing pulley across which the timing belt is stretched and which rotates in response to rotation of a servo motor for lifting and lowering the heater block, and wherein the timing belt moves in response to rotation of the servo motor for lifting and lowering the heater block, thereby lifting and lowering the pair of heater blocks.

Images