Production device and production method for zippered bag easy to tear

Abstract

The device comprises a rack, an unwinding mechanism in the rack is in butt joint with an inclined rotating lever through a front tensioning assembly, a vertical roller assembly behind the inclined rotating lever is matched with a cutter on one side of a triangular rotating lever, and an upper inclined lever and a lower inclined lever of the triangular rotating lever are in butt joint with an upper tensioning assembly and a lower tensioning assembly in a tail frame of the rack respectively. A bottom chain mechanism is arranged in the middle of the tail frame, the output end of the tail frame is in butt joint with a traction assembly at the head end of the bed body, a connecting plate mechanism is arranged in the bed body, supporting rods on the two sides of the connecting plate mechanism vertically penetrate out of the top face of the bed body to be connected with a plurality of longitudinal and transverse sealing and pressing mechanisms in sequence, and the sealing and pressing mechanisms are matched with rear chain head mechanisms. The rear portion of the ejection assembly is connected with a conveyor, and a defective material roller is arranged below the conveyor. The method comprises the steps of feeding and cutting, belt chain compounding, transverse and longitudinal heat sealing and die cutting forming. Two zipper bags can be produced at a time, zippers in the bags only need to be thermally bonded to the bag face on one side, production is convenient, and the positions of the zippers can be freely adjusted.

Description

Technical Field

[0001] This invention relates to the field of zipper bag processing equipment technology, specifically to an easy-tear zipper bag production device and production method. Background Technology

[0002] Easy-tear zipper bags are plastic packaging bags that combine convenient opening and reliable sealing. They are usually made of PE or other plastic materials and have two parallel compression strips (i.e., zippers) at the opening. A gentle press is all it takes to seal them securely, effectively preventing moisture, leakage, and keeping food fresh. Their unique feature is the easy-tear opening at the top of the bag. When using them, there is no need to search for an opening or use scissors. Simply tear off the top along the easy-tear opening to reveal the zipper for opening and closing, greatly improving the convenience of accessing the contents. They are widely used for storing and packaging food (such as snacks, dried goods, and tea), daily necessities, and small items, and are especially suitable for occasions that require frequent opening and closing. Traditional easy-tear zipper bag production lines use a one-out-one-out mode, meaning that one roll of bag film is used as the feed material, and one zipper bag is produced each time. This mode has low production efficiency, mainly due to the fact that the sealing zipper needs to be heat-bonded to both sides of the bag surface, which is a relatively complex process. In addition, the zipper bags produced by this method are limited by the internal volume of the bag, and the zipper can only be placed at the bag opening. When the bag is deep, it is not convenient for users to take out the contents of the bottom of the bag. A new type of production equipment and method is needed to solve the above problems. Summary of the Invention

[0003] To address the aforementioned problems, this invention first proposes an easy-tear zipper bag production device, comprising a frame, an unwinding mechanism on the front guard plate of the frame connecting to a slanted rotating bar in the middle frame of the frame via a front tensioning component, a vertical roller assembly behind the slanted rotating bar cooperating with a cutter on one side of a triangular rotating bar, upper and lower slanted bars of the triangular rotating bar respectively connecting to upper and lower tensioning components in the tail frame of the frame, a bottom chain mechanism with a corner plate and a punching cylinder in the middle of the tail frame, an output end of the tail frame connecting to a traction component at the head of the bed, a connecting plate mechanism built into the bed, support rods on both sides of the connecting plate mechanism vertically extending out of the top surface of the bed and successively connecting to several longitudinal and transverse sealing mechanisms, the sealing mechanisms cooperating with a rear chain head mechanism, a die-cutting mechanism with an ejector assembly at the end of the bed, a conveyor connected behind the ejector assembly, and a residual material roller below the conveyor.

[0004] Furthermore, the unwinding mechanism includes an unwinding cylinder, the cylinder body of which is hinged to the upper side of the outer wall of the front guard plate, the unwinding cylinder is hinged to the body of the winding arm, the first end of the winding arm is hinged to the lower side of the outer wall of the front guard plate, the ends of the two winding arms are rotatably connected to the winding shaft, the sprocket at the end of the winding shaft is connected to the output sprocket of the unwinding motor A through a chain ring, the unwinding motor A is mounted on one side of the winding arm, the inner wall of the front guard plate is connected to the vertical waist holes on the mounting plates on both sides of the pressure roller through bolts, the bottom of the pressure roller is clearance-fitted with the top of the drive roller, and the shaft of the drive roller is connected to the unwinding motor B on the outer wall of the front guard plate.

[0005] Furthermore, the tensioning assembly includes a tensioning cylinder, a tensioning cylinder body hinged to the frame, a tensioning cylinder piston rod hinged to the end of a tilting arm, the beginnings of the two tilting arms connected by pressure rods, the pressure rods hinged to the frame on both sides, the pressure rod body connected to the ends of the two pressure arms, the beginnings of the two pressure arms hinged to tensioning rollers, and several staggered intermediate rollers on both sides of the tensioning rollers; the front tensioning assembly connects to the inclined rotating bar via a bottom roller hinged to the bottom surface of the middle frame, the upper and lower tensioning assemblies connect to the upper and lower inclined bars via steering rollers hinged to the upper and lower sides of the triangular rotating bar respectively, and the upper and lower tensioning assemblies connect to the traction frame of the traction assembly via a pressure roller group hinged to the output end of the tail frame, the traction frame is horizontally mounted on the bed, the top of the adjustment slots on both sides of the traction frame is equipped with adjustment cylinders, the output ends of the two adjustment cylinders are hinged to the two ends of the pressure rollers, a traction roller is provided below the pressure rollers, the traction roller shaft is connected to the output end of the traction motor, and the traction motor is mounted on the outside of the traction frame.

[0006] Furthermore, the vertical roller assembly includes a vertical roller motor, which is installed on the top surface of the middle frame of the machine frame. The output end of the vertical roller motor is vertically connected to the drive vertical roller inside the middle frame. The drive vertical roller is staggered with the feed vertical rollers on both sides. The feed vertical roller is connected to the inclined rotating bar, and the feed vertical roller is connected to the cutter. The cutter holder is installed on one side of the docking frame opening between the middle frame and the tail frame of the machine frame. A triangular rotating bar is installed inside the docking frame opening.

[0007] Furthermore, the bottom chain mechanism includes a carrier plate, which is horizontally installed inside the tail frame of the frame. A bottom belt motor is provided on the bottom surface of the two wing plates at the front end of the carrier plate. The output shaft of the bottom belt motor passes through the top surface of the wing plate. An interlaced vertical roller group is provided between the output shaft and the mounting seat of the corresponding corner plate. The vertical roller is hinged to the input side of the mounting seat. The vertical roller is connected to the interlaced vertical roller group. A pressure belt clamp is provided behind the corner plate. The two ends of the bottom plate of the pressure belt clamp are connected to the tail frame. The bottom plate is connected to the top plate by a bolt group. The gap between the pressure belt clamps is divided into several segments by the bolt group. A negative pressure box is provided at the tail end of the carrier plate. Punching seats are provided on both sides of the opening of the negative pressure box. The cylinder body of the punching cylinder is installed on the top surface of the punching seat. The cutter head of the punching cylinder can extend into the groove opened in the punching seat.

[0008] Furthermore, the connecting plate mechanism includes a drive motor, which is installed in the middle of the bed seat plate. The output gear of the drive motor meshes with the gear on the transmission shaft. The transmission shaft is rotatably connected to the hinge seat on the seat plate. The eccentric columns on the turntables at both ends of the transmission shaft are hinged to the lower end of the connecting rod. The upper end of the connecting rod is hinged to the inner side of the connecting plate. The connecting plate is vertically slidably connected to the lifting seats on both sides of the seat plate. The outer side of the connecting plate is connected to the support rod. The support rod passes through the return spring on the top side of the bed. The upper end of the return spring contacts the support rod body disc.

[0009] Furthermore, the sealing mechanism includes a sealing seat, with a threaded through hole on the top surface of the sealing seat connecting several lifting rods to the upper end of a spring rod. A hanging plate at the bottom of the lifting rod is vertically slidably connected to a movable groove on the top surface of the suspension platform. The diameter of the sealing ring at the opening of the movable groove is smaller than the diameter of the hanging plate. The lower end of the spring rod passes through a buffer spring, and the lower end of the buffer spring is embedded in a recessed groove on the top surface of the suspension platform. The upper end of the buffer spring contacts the spring rod body. The suspension platform mates with a lower pad, which is located within a groove on the top surface of the bed. The bottom surface of the pad is rotatably connected to the top of an adjusting rod, and the adjusting rod body is threadedly connected to a threaded seat on the inner wall of the groove. Each sealing seat of the longitudinal sealing mechanism is mounted on a beam frame at both ends through transverse waist holes. The beam frame has two ends... The top of the connecting support rod is connected to the two suspension platforms under each sealing seat, which successively hang the upper electric heating box and the cold water jacket. The upper electric heating boxes on both sides correspond to the lower electric heating boxes on both sides of the pad. The upper electric heating box is connected to the electrical control box on the outside of the beam frame, and the lower electric heating box is connected to the electrical control box at the bottom of the pad. The sides of the bed are provided with longitudinal hanging cloth rods. The sealing seats of the transverse sealing mechanism are directly connected to the top of the support rod at both ends. Each transverse sealing mechanism shares a pad. The pad has lower hanging cloth rods at both ends, and upper hanging cloth rods are provided on both sides of the suspension platform. The end suspension platform hangs the cold water jacket, and the remaining suspension platforms hang the upper electric heating box. The upper electric heating box corresponds to the lower transverse electric heating box on the pad. Both the upper and lower electric heating boxes are connected to the electrical control box on one side of the bed.

[0010] Furthermore, the chain head mechanism includes a frame A, which is horizontally mounted on the bed and is spaced to the end horizontal sealing mechanism. Two bottom-cutting cylinders are horizontally mounted on the top of the frame A, and the pressure plate at the output end of the bottom-cutting cylinder can extend into the frame opening of the frame A and cooperate with the cutter holder on the bottom surface of the frame opening. A frame B is located behind the frame A and is spaced to it. Two profile-cutting cylinders are horizontally mounted on the top of the frame B, and the cutter head of the profile-cutting cylinder can extend into the frame opening of the frame B and cooperate with the bottom surface of the frame opening.

[0011] Furthermore, the die-cutting mechanism includes a die-cutting box mounted at the end of the bed. The die-cutting box's feed inlet connects to a chain head mechanism. A die-cutting cylinder is located on the top surface of a partition inside the die-cutting box. The output end of the die-cutting cylinder is vertically connected downwards to a die-cutting plate. Two sets of profile cutters are arranged horizontally side-by-side on the die-cutting plate. The die-cutting plate mates with an anvil below. Sliding rods on both sides of the anvil's bottom surface are vertically slidably connected to a sleeve on the bottom surface of the die-cutting box. The center of the anvil's bottom surface is rotatably connected to the top of a lifting shaft. The lifting shaft is threadedly connected to the center of a gear plate, which is screwed to the bottom of the die-cutting box. The outer gear ring of the gear plate meshes with the worm gear. The handwheel at the end of the worm gear extends out of the side wall of the die-cutting box. The discharge port of the die-cutting box connects to the conveyor. A cross frame for the ejection assembly is installed at the inlet of the conveyor. The screw on the top surface of the ejection cylinder passes through the transverse groove on the top surface of the cross frame and is secured by a nut. A roller is installed at the output end of the ejection cylinder. The roller engages with the lower axle. The end of the axle is connected to the axle motor installed on the outside of the cross frame. The axle connects with the residual material roller through several connecting rollers set below. The winding motor of the residual material roller is installed on the mounting arm on one side of the bottom of the bed.

[0012] The present invention also proposes a method for producing the above-mentioned device, comprising the following steps: Material feeding and cutting: The bag belt released laterally by the unwinding mechanism is folded at the inclined rotating bar. After being folded, the bag belt is longitudinally wrapped around the vertical roller assembly and then comes into contact with the cutter. The cutter cuts the middle of the bag belt. The cut upper and lower bag belts are folded by the upper and lower inclined bars of the triangular rotating bar respectively, and then output laterally to the traction assembly through the upper and lower tensioning assemblies. Chain composite: The bottom belt extends from both sides of the bottom chain mechanism. The bottom belt is folded around the corner plate and the inner part of the fold is made of non-heat-sealed material. After the bottom belt is folded, it enters the traction component with the two zipper belts in the middle and is clamped between the upper and lower bag belts. Horizontal and longitudinal heat sealing: The traction component drives the composite belt to step forward, and the step amount is the center distance between adjacent waist holes. The connecting plate mechanism simultaneously drives all longitudinal and transverse sealing mechanisms to perform reciprocating heat pressing in accordance with the step amount. At the longitudinal sealing mechanism, the zipper belt is bonded to the upper bag belt, and the two folded outward sides of the bottom belt are bonded to the upper and lower bag belts respectively to form the bottom edge of the bag. The upper and lower bag belts at the waist holes are bonded to form the two sides of the bottom edge of the bag. At the longitudinal sealing mechanism, the upper and lower bag belts are bonded to form the side edge of the bag. Die-cutting: The chain head mechanism first cuts an easy-tear channel at the zipper tape on the side of the bag. The easy-tear channel does not cut through the upper bag tape. Then, it cuts through the outer contour of the zipper head. The outer contour notch corresponds to the easy-tear channel. Subsequently, the die-cutting mechanism cuts the entire outer contour of the zipper bag into shape. The ejector component ejects the cut zipper bag to the conveyor. The cutting residue is rolled into the residual material roller.

[0013] The beneficial effects of this invention are as follows: This invention can produce two zipper bags in one process, with two zipper bags produced each time. The two zipper edges inside the bag are heat-bonded to one side of the bag surface, which greatly simplifies the hot pressing process and improves production efficiency. When opening the bag for the first time, the bag surface is torn open along the zipper bite by the pre-cut zipper head. The zipper opening is only located on one side of the bag body, so that the zipper position can be adjusted as needed, making it convenient for the user to take out the contents of the bottom of the bag. Attached Figure Description

[0014] Figure 1 This is a partial cross-sectional view of the front structure of the present invention; Figure 2 This is a partial cross-sectional view of the top structure of the present invention; Figure 3 This is a front view sectional view of the present invention at the frame. Figure 4 This is a schematic diagram of the right-side structure of the present invention at the diagonal bar; Figure 5 This is a schematic diagram of the left-side structure of the present invention at the triangular rotating bar; Figure 6 This is a schematic diagram of the left-side structure of the die-cutting mechanism in this invention; Figure 7 This is a schematic diagram of the right-side structure of the chain head mechanism in this invention; Figure 8 This is a right-side structural cross-sectional view of the transverse sealing mechanism in this invention; Figure 9 This is a front view sectional view of the longitudinal sealing mechanism in this invention; Figure 10 This is a right-side structural schematic diagram of the longitudinal sealing mechanism in this invention; Figure 11 for Figure 1 A magnified view of a portion of region A in the middle; Figure 12 This is a schematic diagram of the composite strip structure in this invention; Figure 13 This is a schematic diagram of the structure of the zipper bag produced by the present invention.

[0015] The reference numerals in the attached drawings are explained as follows: 1. Frame; 101. Docking frame opening; 2. Bag strap; 201. Upper bag strap; 202. Lower bag strap; 203. Zipper head; 3. Angled rotating bar; 4. Triangular rotating bar; 5. Cutter; 501. Knife holder; 6. Angle plate; 601. Mounting base; 602. Vertical roller; 7. Punching cylinder; 8. Bed; 801. Lifting seat; 802. Threaded seat; 803. Mounting arm; 9. Support rod; 10. Conveyor; 11. Residual material roller; 1101. Roller motor; 12. Bottom belt; 1201. Waist hole; 13. 14. Zipper belt; 15. Unwinding cylinder; 16. Winding arm; 17. Winding shaft; 18. Feeding motor A; 19. Pressure roller; 20. Drive roller; 21. Feeding motor B; 22. Tensioning cylinder; 23. Tilting arm; 24. Pressure bar; 25. Pressure arm; 26. Tensioning roller; 27. Transfer roller; 28. Bottom roller; 29. ​​Directional roller; 30. Vertical roller motor; 31. Drive vertical roller; 32. Feed vertical roller; 33. Carrier plate; 34. Bottom belt motor; 35. Interlaced vertical roller group; 36. Pressure clamp; 37. Negative pressure box; 3 8. Punching seat; 39. Drive motor; 40. Transmission shaft; 4001. Turntable; 41. Connecting rod; 42. Connecting plate; 43. Return spring; 44. Sealing seat; 4401. Transverse waist hole; 45. Hanging rod; 46. Suspension platform; 4601. Movable groove; 4602. Upper hanging cloth rod; 47. Buffer spring; 48. Pad plate; 4801. Lower hanging cloth rod; 49. Adjusting rod; 50. Beam frame; 51. Upper heating box; 52. Cold water jacket; 53. Electrical control box; 54. Longitudinal hanging cloth rod; 55. Bottom cutting cylinder; 56. Knife holder; 57. Frame B 58. Cutting cylinder; 59. Die-cutting box; 5901. Sleeve; 60. Die-cutting cylinder; 61. Die-cutting plate; 62. Anvil; 6201. Slide rod; 63. Lifting shaft; 64. Gear plate; 65. Worm gear; 66. Frame; 67. Ejection cylinder; 6701. Roller; 68. Wheel axle; 69. Connecting roller; 70. Pressure roller group; 71. Traction frame; 72. Adjusting cylinder; 73. Pressure roller; 74. Traction roller; 75. Traction motor; 76. Spring rod; 77. Lower heating box; 78. Frame A; 79. Wheel axle motor. Detailed Implementation

[0016] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] The present invention will be further described below with reference to the accompanying drawings: like Figures 1 to 13 As shown, an easy-tear zipper bag production device includes a frame 1. The unwinding mechanism on the front guard plate of the frame 1 is connected to the inclined rotating bar 3 in the middle frame of the frame 1 through the front tensioning component. The vertical roller component behind the inclined rotating bar 3 cooperates with the cutter 5 on one side of the triangular rotating bar 4. The upper and lower inclined bars of the triangular rotating bar 4 are respectively connected to the upper and lower tensioning components in the tail frame of the frame 1. The middle of the tail frame is provided with a bottom chain mechanism with corner plates 6 and punching cylinders 7. The output end of the tail frame is connected to the traction component at the head end of the bed body 8. The bed body 8 has a built-in connecting plate mechanism. The support rods 9 on both sides of the connecting plate mechanism extend vertically out of the top surface of the bed body 8 and are connected to several longitudinal and transverse sealing mechanisms. The sealing mechanism cooperates with the rear chain head mechanism. The end of the bed body 8 is provided with a die-cutting mechanism with an ejection component. The ejection component is connected to a conveyor 10. The conveyor 10 is provided with a residual material roller 11 below it.

[0019] In this embodiment, the unwinding mechanism includes an unwinding cylinder 14. The cylinder body of the unwinding cylinder 14 is hinged to the upper side of the outer wall of the front guard plate, and the unwinding cylinder 14 is hinged to the arm body of the winding arm 15. The first end of the winding arm 15 is hinged to the lower side of the outer wall of the front guard plate. The ends of the two winding arms 15 are rotatably connected to the shaft 16. The sprocket at the end of the shaft 16 is connected to the output sprocket of the unwinding motor A17 through a chain ring. The unwinding motor A17 is mounted on one side of the winding arm 15. The inner wall of the front guard plate is bolted to the vertical waist holes on the mounting plates on both sides of the pressure roller 18. The bottom of the pressure roller 18 is clearance-fitted with the top of the drive roller 19. The shaft of the drive roller 19 is connected to the unwinding motor B20 on the outer wall of the front guard plate. During operation, the bag film roll is mounted on the shaft 16. The pressure roller 18 presses the bag strip 2 released from the bag film roll onto the drive roller 19. The two unwinding motors simultaneously drive the bag film roll to unwind. The unwinding cylinder 14 can adjust the height of the bag film roll and tension the bag strip 2.

[0020] In this embodiment, each tensioning component adopts the same structure, including a tensioning cylinder 21. The cylinder body of the tensioning cylinder 21 is hinged to the frame 1. The piston rod of the tensioning cylinder 21 is hinged to the end of the flipping arm 22. The heads of the two flipping arms 22 are connected by pressure rods 23. The two sides of the pressure rods 23 are hinged to the frame 1. The rod body of the pressure rods 23 is connected to the ends of two pressure arms 24. The heads of the two pressure arms 24 are hinged to tensioning rollers 25. Several intermediate transfer rollers 26 are provided on both sides of the tensioning rollers 25, which are arranged alternately in an upper and lower manner. When the tensioning cylinder 21 extends or retracts, it can link the tensioning rollers 25 to swing up and down, thereby tensioning the belt surface. The front tensioning assembly is connected to the inclined rotating bar 3 via a bottom roller 27 hinged to the bottom surface of the middle frame. The upper and lower tensioning assemblies are connected to the upper and lower inclined bars via steering rollers 28 hinged to the upper and lower sides of the triangular rotating bar 4, respectively. The upper and lower tensioning assemblies are connected to the traction frame 71 of the traction assembly via a pressure roller group 70 hinged to the output end of the tail frame. The traction frame 71 is horizontally mounted on the bed 8. Adjusting cylinders 72 are provided at the top of the adjusting slots on both sides of the traction frame 71. The output ends of the two adjusting cylinders 72 are hinged to the two ends of the pressure rollers 73. A traction roller 74 is provided below the pressure rollers 73. The shaft of the traction roller 74 is connected to the output end of the traction motor 75. The traction motor 75 is installed on the outside of the traction frame 71. The traction assembly can be added to the front of the subsequent sealing mechanism, chain head mechanism and die-cutting mechanism as needed. During traction, the adjusting cylinders 72 drive the pressure rollers 73 to press the belt surface onto the traction roller 74. The traction motor 75 rotates the traction roller 74 to guide the belt surface forward.

[0021] In this embodiment, the vertical roller assembly includes a vertical roller motor 29, which is installed on the top surface of the middle frame of the frame 1. The output end of the vertical roller motor 29 is vertically connected to the drive vertical roller 30 inside the middle frame. The drive vertical roller 30 is staggered with the feed vertical rollers on both sides. The feed vertical roller 31 is connected to the inclined rotating bar 3, and the discharge vertical roller 32 is connected to the cutter 5. The cutter holder 501 of the cutter 5 is installed on one side of the docking frame 101 between the middle frame and the tail frame of the frame 1. A triangular rotating bar 4 is installed inside the docking frame 101.

[0022] In this embodiment, the bottom chain mechanism includes a carrier plate 33, which is horizontally installed in the tail frame of the frame 1. A bottom belt motor 34 is provided on the bottom surface of the two wing plates at the front end of the carrier plate 33. The output shaft of the bottom belt motor 34 passes through the top surface of the wing plate. An interlaced vertical roller group 35 is provided between the output shaft and the mounting seat 601 of the corresponding corner plate 6. The input side of the mounting seat 601 is hinged to the vertical roller 602, and the vertical roller 602 is connected to the interlaced vertical roller group 35. A pressure belt clamp 36 is provided behind the corner plate 6. The two ends of the bottom plate of the pressure belt clamp 36 are connected to the tail frame. The bottom plate is connected to the top plate by a bolt group. The gap between the pressure belt clamps 36 is divided into several segments by the bolt group to limit the bottom belt 12 and the zipper belt 13 that pass through. A second pressure belt clamp 36 can be added to the front side of the longitudinal sealing and pressing mechanism as needed. The negative pressure box 37 is provided at the tail end of the carrier plate 33. The air port of the negative pressure box 37 with filter screen is connected to the external air passage. The negative pressure box 37 has punch seats 38 on both sides of the open opening. The punch cylinder 7 is installed on the top surface of the punch seat 38. The cutter head of the punch cylinder 7 can extend into the groove opened in the punch seat 38. When the cutter head is working, the fragments cut off are sucked into the negative pressure box 37 for collection.

[0023] In this embodiment, the connecting plate mechanism includes a drive motor 39, which is installed in the middle of the seat plate of the bed 8. The output gear of the drive motor 39 meshes with the shaft gear of the transmission shaft 40. The transmission shaft 40 is rotatably connected to the hinge seat on the seat plate. The eccentric column on the turntable 4001 at both ends of the transmission shaft 40 is hinged to the lower end of the connecting rod 41. The upper end of the connecting rod 41 is hinged to the inner side of the connecting plate 42. The connecting plate 42 is vertically slidably connected to the lifting seats 801 on both sides of the seat plate. The outer side of the connecting plate 42 is connected to the support rod 9. The support rod 9 passes through the return spring 43 on the top side of the bed 8. The upper end of the return spring 43 contacts the rod body of the support rod 9. When the drive motor 39 is started, each sealing mechanism can be driven to move up and down synchronously through each support rod 9.

[0024] In this embodiment, the sealing mechanism includes a sealing seat 44. A threaded through hole on the top surface of the sealing seat 44 is threadedly connected to the upper end of a plurality of hanging rods 45 and a spring rod 76. The bottom plate of the hanging rod 45 is vertically slidably connected to the movable groove 4601 on the top surface of the suspension platform 46. The diameter of the sealing ring hole at the opening of the movable groove 4601 is smaller than the diameter of the hanging plate, so that the hanging rod 45 can suspend the suspension platform 46. Rotating the hanging rod 45 can adjust the suspension height of the suspension platform 46. The lower end of the spring rod 76 passes through a buffer spring 47. The lower end of the buffer spring 47 is embedded in the recessed groove on the top surface of the suspension platform 46. The upper end of the buffer spring 47 is in contact with the rod body of the spring rod 76. Rotating the spring rod 76 can change the compression degree of the buffer spring 47, thereby cooperating with the hanging rod 45 to adjust the buffering force when the suspension platform 46 is pressed down. The suspension platform 46 cooperates with the lower pad 48. The pad 48 is located in the groove on the top surface of the bed 8. The bottom surface of the pad 48 is rotatably connected to the top of the adjusting rod 49. The body of the adjusting rod 49 is threadedly connected to the threaded seat 802 on the inner side wall of the groove.

[0025] Based on the same structure described above, each sealing seat 44 of the longitudinal sealing mechanism is mounted on the beam frame 50 at both ends through transverse waist holes 4401. The tops of the support rods 9 are connected to both ends of the beam frame 50. The two suspension platforms 46 under each sealing seat 44 successively hang the upper heating box 51 and the cold water jacket 52. The upper heating boxes 51 on both sides correspond to the longitudinal lower heating boxes 77 on both sides of the pad plate 48, as shown above. Figure 10 As shown, the upper and lower heating boxes are slidably connected by heat-pressing strips on opposite sides. The heat-pressing strips are about 15cm long and can be moved freely for quick replacement. The gap between the two heat-pressing strips of the upper heating box 51 in the middle matches the opening of the zipper belt 13. The upper heating box 51 is connected to the outer electrical control box 53 of the beam frame 50, and the lower heating box 77 is connected to the bottom electrical control box 53 of the pad plate 48. The bed body 8 has longitudinal hanging cloth rods 54 on both sides. The sealing seat 44 of the transverse sealing mechanism is directly connected to the top of the support rod 9 at both ends. Each transverse sealing mechanism shares a pad plate 48. The pad plate 48 has lower hanging cloth rods 4801 at both ends, and upper hanging cloth rods 4602 on both sides of the suspension platform 46. The end suspension platform 46 is equipped with a cold water jacket 52, and the remaining suspension platforms 46 are equipped with upper heating boxes 51. The upper heating box 51 corresponds to the transverse lower heating box 77 on the pad plate 48. Both the upper and lower heating boxes are connected to the electrical control box 53 on one side of the bed body 8. When the longitudinal and transverse sealing mechanisms are working, there are partition cloths hanging horizontally and longitudinally between each cloth hanging rod to prevent the electric heating box from directly contacting the bag belt 2 and causing adhesion.

[0026] In this embodiment, the chain head mechanism includes a frame A78, which is horizontally mounted on the bed 8 and is spaced to the end horizontal sealing mechanism. Two bottom-cutting cylinders 55 are horizontally mounted on the top of the frame A78. The pressure plate at the output end of the bottom-cutting cylinder 55 can extend into the frame opening of the frame A78 and cooperate with the cutter holder 56 on the bottom surface of the frame opening. A frame B57 is provided behind the frame A78 and is spaced to it. Two profile-cutting cylinders 58 are horizontally mounted on the top of the frame B57. The cutter head of the profile-cutting cylinder 58 can extend into the frame opening of the frame B57 and cooperate with the bottom surface of the frame opening.

[0027] In this embodiment, the die-cutting mechanism includes a die-cutting box 59, which is mounted at the end of the bed 8. The feed port of the die-cutting box 59 is connected to the chain head mechanism. A sensor is provided inside the feed port. The sensor can identify the marking points on the bag belt 2, thereby assisting the controller in coordinating the cooperation between the motors and cylinders in the device to ensure the stepping amount of the bag belt 2. The die-cutting box 59 has a die-cutting cylinder 60 on the top surface of the internal partition. The output end of the die-cutting cylinder 60 is vertically connected to the die-cutting plate 61. The die-cutting plate 61 has two sets of profile cutters arranged horizontally side by side. The die-cutting plate 61 cooperates with the anvil 62 below. The sliding rods 6201 on both sides of the bottom surface of the anvil 62 are vertically slidably connected to the sleeve 5901 on the bottom surface of the die-cutting box 59. The top of the lifting shaft 63 is rotatably connected to the center of the bottom surface of the anvil 62. The shaft body of the lifting shaft 63 is threadedly connected to the center of the gear plate 64. The gear plate 64 is screwed to the bottom of the die-cutting box 59. The outer gear ring of the gear plate 64 meshes with the worm gear 65. The handwheel at the end of the worm gear 65 extends out of the side wall of the die-cutting box 59. Rotating the handwheel can adjust the height of the anvil 62. The die-cutting box 59 is connected to the conveyor 10 at its outlet. The conveyor 10 is equipped with a frame 66 for the ejection assembly at its inlet. The top screw of the ejection cylinder 67 passes through the transverse groove on the top surface of the frame 66 and is secured by a nut. A roller 6701 is mounted on the output end of the ejection cylinder 67. The roller 6701 is engaged with the lower axle 68. The end of the axle 68 is connected to the axle motor 79 installed on the outside of the frame 66. The axle 68 is connected to the residual material roller 11 through several connecting rollers 69 provided below. The winding motor 1101 of the residual material roller 11 is mounted on the mounting arm 803 on one side of the bottom of the bed 8.

[0028] The present invention also proposes a production method for the above-mentioned production apparatus, comprising the following steps: Material feeding and cutting: The unwinding mechanism releases the bag strip 2 laterally. After passing through the front tensioning assembly, the bag strip 2 goes around the bottom roller 27 and enters the inclined rotating bar 3 for folding. After folding, the bag strip 2 goes around the feed vertical roller 31, drive vertical roller 30 and discharge vertical roller 32 longitudinally and then contacts the cutter 5. The cutter 5 cuts the middle of the bag strip 2. The cut upper bag strip 201 and lower bag strip 202 are folded by the upper and lower inclined bars of the triangular rotating bar 4, and then enter the upper and lower tensioning assemblies through the turning roller 28 and converge at the pressure roller group 70. Chain composite: The bottom belt motors 34 on both sides of the bottom chain mechanism release the bottom belt 12. After passing through the staggered vertical roller group 35, the bottom belt 12 turns to the corner plate 6 at the vertical roller 602 and is folded around the sharp corner of the corner plate 6. The inner surface of the fold is made of non-heat-sealed material. After folding, it enters the pressure belt clamping plate 36 and is flattened on both sides. The flattened bottom belt 12 punches waist holes 1201 at the punching cylinder 7. At the same time, the two zipper belts 13 enter the middle of the pressure belt clamping plate 36 through the wire holes on both sides of the frame 1, and are clamped together with the bottom belts 12 on both sides between the upper and lower bag belts and enter the pressure belt roller group 70 to press into a three-layer composite belt. The composite belt is output laterally to the traction component. Horizontal and longitudinal heat sealing: The traction component drives the composite belt to step forward, and the step amount is the center distance between adjacent waist holes 1201. The connecting plate mechanism simultaneously drives all longitudinal and transverse sealing mechanisms to perform reciprocating heat sealing in accordance with the step amount. At the first longitudinal sealing mechanism, the zipper belt 13 is initially bonded to the upper bag belt 201 and cooled. At the second longitudinal sealing mechanism, the zipper belt 13 is bonded to the upper bag belt 201 again and cooled. At the same time, the two folded and turned-out sides of the bottom belt 12 are bonded to the upper and lower bag belts respectively to form the bottom edge of the bag. The upper and lower bag belts at the waist holes 1201 are bonded to form the two sides of the bottom edge of the bag. At the longitudinal sealing mechanism, the upper and lower bag belts are heat-bonded four times at the same position to form the side edge of the bag, and are cooled at the cold water jacket 52 hanging on the end suspension platform 46. Die-cutting: The bottom-cutting cylinder 55 in the chain head mechanism works with the knife holder 56 to first cut an easy-tear groove at the zipper tape 13 on the side of the bag. The easy-tear groove does not cut through the upper bag tape 201. Then the outline-cutting cylinder 58 cuts through the outer outline of the zipper head 203. The outer outline notch corresponds to the easy-tear groove. Subsequently, the die-cutting plate 61 in the die-cutting mechanism cuts the entire outer outline of the zipper bag into shape. The ejection cylinder 67 in the ejection assembly ejects the two zipper bags cut side by side to the conveyor 10. The cutting residue is rolled into the residual material roller 11.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A tear-off zipper bag production apparatus, comprising a frame (1), characterized in that: The unwinding mechanism on the front guard plate of the frame (1) is connected to the inclined rotating bar (3) in the middle frame of the frame (1) through the front tensioning component. The vertical roller component behind the inclined rotating bar (3) cooperates with the cutter (5) on one side of the triangular rotating bar (4). The upper and lower inclined bars of the triangular rotating bar (4) are respectively connected to the upper and lower tensioning components in the tail frame of the frame (1). The middle of the tail frame is provided with a bottom chain mechanism with a corner plate (6) and a punch cylinder (7). The output end of the tail frame is connected to the traction component at the head end of the bed (8). The bed (8) has a built-in connecting plate mechanism. The support rods (9) on both sides of the connecting plate mechanism extend vertically through the top surface of the bed (8) and connect to several longitudinal and transverse sealing mechanisms. The sealing mechanism cooperates with the rear chain head mechanism. The end of the bed (8) is provided with a die-cutting mechanism with an ejection component. The ejection component is connected to the conveyor (10) behind it. The conveyor (10) is provided with a residual material roller (11) below it.

2. The easy-tear zipper bag production device according to claim 1, characterized in that: The unwinding mechanism includes an unwinding cylinder (14), the cylinder body of which is hinged to the upper side of the outer wall of the front guard plate, the unwinding cylinder (14) is hinged to the arm body of the winding arm (15), the head end of the winding arm (15) is hinged to the lower side of the outer wall of the front guard plate, the ends of the two winding arms (15) are rotatably connected to the winding shaft (16), the sprocket at the end of the winding shaft (16) is connected to the output sprocket of the unwinding motor A (17) through a chain ring, the unwinding motor A (17) is mounted on one side of the winding arm (15), the inner wall of the front guard plate is connected to the vertical waist holes on the mounting plates on both sides of the pressure roller (18) through bolts, the bottom of the pressure roller (18) is clearance-fitted with the top of the drive roller (19), and the shaft of the drive roller (19) is connected to the unwinding motor B (20) on the outer wall of the front guard plate.

3. The easy-tear zipper bag production device according to claim 1, characterized in that: The tensioning assembly includes a tensioning cylinder (21), the cylinder body of which is hinged to the frame (1), the piston rod of which is hinged to the end of the flipping arm (22), the beginnings of the two flipping arms (22) are connected by pressure rods (23), the two sides of the pressure rods (23) are hinged to the frame (1), the rod body of the pressure rods (23) is connected to the ends of the two pressure arms (24), the beginnings of the two pressure arms (24) are hinged to tensioning rollers (25), and several intermediate transfer rollers (26) are provided on both sides of the tensioning rollers (25) in an alternating manner; the front tensioning assembly is connected to the inclined rotating bar (3) through the bottom roller (27) hinged to the bottom surface of the middle frame, and the upper and lower tensioning assemblies The upper and lower diagonal bars are respectively connected to the steering rollers (28) hinged on the upper and lower sides of the triangular rotating bar (4). The upper and lower tensioning components are connected to the traction frame (71) of the traction component through the pressure roller group (70) hinged on the output end of the tail frame. The traction frame (71) is horizontally mounted on the bed (8). The top of the adjustment slots on both sides of the traction frame (71) is provided with adjustment cylinders (72). The output ends of the two adjustment cylinders (72) are hinged to the two ends of the pressure roller (73). The pressure roller (73) is provided with a traction roller (74) below it. The shaft of the traction roller (74) is connected to the output end of the traction motor (75). The traction motor (75) is installed on the outside of the traction frame (71).

4. The easy-tear zipper bag production device according to claim 1, characterized in that: The vertical roller assembly includes a vertical roller motor (29), which is installed on the top surface of the middle frame of the frame (1). The output end of the vertical roller motor (29) is vertically connected to the drive vertical roller (30) inside the middle frame. The drive vertical roller (30) is staggered with the feed vertical rollers on both sides. The feed vertical roller (31) is connected to the inclined rotating bar (3), and the discharge vertical roller (32) is connected to the cutter (5). The cutter holder (501) of the cutter (5) is installed on one side of the docking frame opening (101) between the middle frame and the tail frame of the frame (1). A triangular rotating bar (4) is installed inside the docking frame opening (101).

5. The easy-tear zipper bag production device according to claim 1, characterized in that: The bottom chain mechanism includes a carrier plate (33), which is horizontally installed in the tail frame of the frame (1). A bottom belt motor (34) is provided on the bottom surface of the wing plates on both sides of the front end of the carrier plate (33). The output shaft of the bottom belt motor (34) extends through the top surface of the wing plate. An interlaced vertical roller group (35) is provided between the output shaft and the mounting base (601) of the corresponding corner plate (6). A vertical roller (602) is hinged to the input side of the mounting base (601). The vertical roller (602) is connected to the interlaced vertical roller group (35). A pressure belt clamp (36) is provided behind the plate (6). The bottom plate of the pressure belt clamp (36) is connected to the tail frame at both ends. The bottom plate is connected to the top plate by a bolt group. The gap between the pressure belt clamps (36) is divided into several sections by the bolt group. A negative pressure box (37) is provided at the tail end of the carrier plate (33). A punching seat (38) is provided on both sides of the opening of the negative pressure box (37). The punching cylinder (7) is installed on the top surface of the punching seat (38). The cutting head of the punching cylinder (7) can be inserted into the groove opened in the punching seat (38).

6. The easy-tear zipper bag production device according to claim 1, characterized in that: The connecting plate mechanism includes a drive motor (39), which is installed in the middle of the seat plate of the bed (8). The output gear of the drive motor (39) meshes with the shaft gear of the transmission shaft (40). The transmission shaft (40) is rotatably connected to the hinge seat on the seat plate. The eccentric column on the turntable (4001) at both ends of the transmission shaft (40) is hinged to the lower end of the connecting rod (41). The upper end of the connecting rod (41) is hinged to the inner side of the connecting plate (42). The connecting plate (42) is vertically slidably connected to the lifting seats (801) on both sides of the seat plate. The outer side of the connecting plate (42) is connected to the support rod (9). The support rod (9) passes through the top side return spring (43) of the bed (8). The upper end of the return spring (43) contacts the rod body disc of the support rod (9).

7. The easy-tear zipper bag production device according to claim 1, characterized in that: The sealing mechanism includes a sealing seat (44). A threaded through hole on the top surface of the sealing seat (44) is threaded to connect several lifting rods (45) and the upper ends of spring rods (76). The bottom hanging plate of the lifting rods (45) is vertically slidably connected to the movable groove (4601) on the top surface of the suspension platform (46). The diameter of the sealing ring at the opening of the movable groove (4601) is smaller than the diameter of the hanging plate. The lower end of the spring rod (76) passes through a buffer spring (47). The lower end of the buffer spring (47) is embedded in a recessed groove on the top surface of the suspension platform (46). The upper end of the buffer spring (47) is connected to… The spring rod (76) contacts the disc body, the suspension platform (46) cooperates with the lower pad (48), the pad (48) is located in the groove on the top surface of the bed (8), the bottom surface of the pad (48) is rotatably connected to the top of the adjusting rod (49), and the adjusting rod (49) is threadedly connected to the threaded seat (802) on the inner side wall of the groove; the two ends of each sealing seat (44) of the longitudinal sealing mechanism are erected on the beam frame (50) through the transverse waist hole (4401), and the two ends of the beam frame (50) are connected to the top of the support rod (9). The upper heating box (51) and the cold water jacket (52) are successively mounted on the two suspension platforms (46) under each sealing seat (44). The upper heating boxes (51) on both sides correspond to the lower heating boxes (77) on both sides of the pad (48). The upper heating boxes (51) are connected to the electrical control box (53) on the outside of the beam frame (50), and the lower heating boxes (77) are connected to the electrical control box (53) at the bottom of the pad (48). The bed body (8) is provided with longitudinal hanging cloth rods (54) on both sides. The sealing seats (44) of the transverse sealing mechanism are directly connected at both ends. At the top of the support rod (9), each horizontal sealing mechanism shares a pad (48). The pad (48) has a lower hanging cloth rod (4801) at both ends, and an upper hanging cloth rod (4602) on both sides of the suspension platform (46). The end suspension platform (46) is equipped with a cold water jacket (52), and the other suspension platforms (46) are equipped with an upper electric heating box (51). The upper electric heating box (51) corresponds to the horizontal lower electric heating box (77) on the pad (48). Both the upper and lower electric heating boxes are connected to the electrical control box (53) on one side of the bed body (8).

8. The easy-tear zipper bag production device according to claim 1, characterized in that: The chain head mechanism includes a frame A (78), which is horizontally mounted on the bed (8) and is spaced apart from the end horizontal sealing mechanism. The top of the frame A (78) is horizontally provided with two bottom-cutting cylinders (55). The pressure plate at the output end of the bottom-cutting cylinder (55) can extend into the frame opening of the frame A (78) and cooperate with the knife holder (56) on the bottom surface of the frame opening. The frame B (57) is located behind the frame A (78) and is spaced apart from it. The top of the frame B (57) is horizontally provided with two profile-cutting cylinders (58). The cutter head of the profile-cutting cylinder (58) can extend into the frame opening of the frame B (57) and cooperate with the bottom surface of the frame opening.

9. The easy-tear zipper bag production device according to claim 1, characterized in that: The die-cutting mechanism includes a die-cutting box (59), which is mounted at the end of the bed (8). The feed port of the die-cutting box (59) is connected to the chain head mechanism. The die-cutting box (59) has a die-cutting cylinder (60) on the top surface of the internal partition. The output end of the die-cutting cylinder (60) is vertically connected to the die-cutting plate (61). The die-cutting plate (61) has two sets of profile cutters arranged horizontally side by side. The die-cutting plate (61) cooperates with the anvil (62) below. The sliding rods (6201) on both sides of the bottom surface of the anvil (62) are vertically slidably connected to the sleeve (5901) on the bottom surface of the die-cutting box (59). The center of the bottom surface of the anvil (62) is rotatably connected to the top of the lifting shaft (63). The shaft body of the lifting shaft (63) is threadedly connected to the center of the gear plate (64). The gear plate (64) is screwed to the bottom of the die-cutting box (59). The outer gear ring of the gear plate (64) Engages with worm gear (65), the handwheel at the end of worm gear (65) extends out of the side wall of die-cutting box (59), the outlet of die-cutting box (59) connects to conveyor (10), the inlet of conveyor (10) is equipped with a cross frame (66) for ejection assembly, the top screw of ejection cylinder (67) passes through the horizontal groove on the top surface of cross frame (66) and is fastened by nut, the output end of ejection cylinder (67) is equipped with roller (6701), the roller (6701) cooperates with the lower axle (68), the end of axle (68) is connected to axle motor (79) installed on the outside of cross frame (66), axle (68) connects to residual material roller (11) through several connecting rollers (69) set below, the winding motor (1101) of residual material roller (11) is installed on the mounting arm (803) on one side of the bottom of bed (8).

10. The production method of the easy-tear zipper bag production device according to claim 1, characterized in that, Includes the following steps: Material feeding and cutting: The bag strip (2) released laterally by the unwinding mechanism is folded at the inclined rotating bar (3). After being folded, the bag strip (2) is longitudinally wrapped around the vertical roller assembly and then comes into contact with the cutter (5). The cutter (5) cuts the middle of the bag strip (2). The cut upper bag strip (201) and lower bag strip (202) are folded by the upper and lower inclined bars of the triangular rotating bar (4) respectively, and then output laterally to the traction assembly through the upper and lower tensioning assemblies. Chain composite: The bottom belt (12) is released from both sides of the bottom chain mechanism. The bottom belt (12) is folded around the corner plate (6) and the inner surface of the fold is made of non-heat-sealed material. After the bottom belt (12) is folded, a waist hole (1201) is punched at the punching cylinder (7) and then it enters the traction component with the two zipper belts (13) in the middle and is clamped together between the upper and lower bag belts. Horizontal and longitudinal heat sealing: The traction component drives the composite belt to step forward, and the step forward amount is the center distance between adjacent waist holes (1201). The connecting plate mechanism simultaneously drives all longitudinal and transverse sealing mechanisms to perform reciprocating heat pressing in accordance with the step forward amount. At the longitudinal sealing mechanism, the zipper belt (13) is bonded to the upper bag belt (201), and the two folded outward faces of the bottom belt (12) are bonded to the upper and lower bag belts respectively to form the bottom edge of the bag. The upper and lower bag belts at the waist holes (1201) are bonded to form the locking edges on both sides of the bottom edge of the bag. At the longitudinal sealing mechanism, the upper and lower bag belts are bonded to form the side edge of the bag. Die-cutting: The chain head mechanism first cuts an easy-tear channel at the zipper tape (13) on the side of the bag. The easy-tear channel does not cut through the upper bag tape (201). Then, it cuts through the outer contour of the zipper head (203). The outer contour notch corresponds to the easy-tear channel. Subsequently, the die-cutting mechanism cuts the entire outer contour of the zipper bag into shape. The ejector assembly ejects the cut zipper bag to the conveyor (10). The cutting residue is rolled into the residual material roller (11).

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