A composite unwinding device for producing a zippered bag

Abstract

The utility model provides a kind of composite unwinding device for producing zipper bag, belong to zipper bag production equipment technical field, including front frame, the outer wall of front frame both sides guard plate upper and lower side is respectively hinged and is unwound air cylinder cylinder body with reel arm first end, unwinding air cylinder piston rod hinged reel arm arm body, two reel arm terminal rotary connection reel shaft, bag roll on reel shaft is pulled to front tensioning assembly by driving assembly, front tensioning assembly is connected with the inclined lever in middle frame, vertical roller assembly and cutting tool cooperation in rear inclined lever, bag belt is cut into upper bag belt and lower bag belt by half, upper and lower bag belt is respectively connected with the upper and lower tensioning assembly in tail frame by upper and lower inclined lever on triangular lever, bottom chain mechanism on the carrier plate in tail frame middle part pulls bottom belt, zipper and upper and lower bag belt composite;The device can be two zipper bag production line for one to carry out composite unwinding feeding, built-in multistage tensioning, driving, positioning component, ensure the stability of feeding, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of zipper bag production equipment, specifically to a composite unwinding device for producing zipper bags. Background Technology

[0002] Self-sealing zipper bags are plastic bags with an interlocking plastic zipper at the opening. To use, simply align the protrusions and grooves on both sides of the opening and press to easily seal. To open, simply pull the zipper. This design allows the bag to be repeatedly opened and closed, ensuring excellent sealing and effectively preventing moisture, dust, and leakage while keeping the contents fresh. They are widely used for food storage and preservation, storing small items (such as stationery and parts), travel repackaging, and protecting important documents or electronic components. Traditional zipper bags have a simple structure, consisting of only three heat-sealed parts: the upper and lower bag surfaces and the zipper. Their capacity is limited, and production lines often operate on a one-to-one basis, resulting in low production efficiency. This is mainly due to the limited unwinding capacity of the unwinding device, necessitating a new type of equipment to address these issues. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a composite unwinding device for producing zipper bags, comprising a front frame, with the cylinder body of an unwinding cylinder and the beginning of a winding arm respectively hinged to the upper and lower sides of the outer walls of the side guards on both sides of the front frame. The piston rod of the unwinding cylinder is hinged to the body of the winding arm, and the ends of the two winding arms are rotatably connected to a winding shaft. The bag roll on the winding shaft is pulled to a front tensioning component by a drive assembly. The front tensioning component is connected to a diagonal rotating bar in the middle frame. A vertical roller assembly behind the diagonal rotating bar cooperates with a cutter to cut the bag strip in half into an upper bag strip and a lower bag strip. The upper and lower bag strips are connected to the upper and lower tensioning components in the tail frame respectively through the upper and lower diagonal bars of the triangular rotating bar. The bottom chain mechanism on the middle carrier plate of the tail frame pulls the bottom strip, zipper strip, and upper and lower bag strips to composite them.

[0004] Furthermore, the drive assembly includes a feeding motor A, which is mounted on one side of the winding arm. The output sprocket of the feeding motor A is connected to the end sprocket of the winding shaft via a chain ring. The inner walls of the two side guard plates of the front frame are connected to the vertical waist holes on the mounting plates on both sides of the pressure roller via bolts. The bottom of the pressure roller is clearance-fitted with the top of the drive roller. The shaft of the drive roller is connected to the feeding motor B on the outer wall of the guard plate.

[0005] Furthermore, the tensioning assembly includes a pair of tensioning cylinders. The cylinder bodies of the front, upper, and lower tensioning cylinders are symmetrically hinged to the front, middle, and rear frames, respectively. The piston rod of the tensioning cylinder is hinged to the end of the tilting arm. The beginnings of the two tilting arms are connected by pressure rods. The two sides of the pressure rods are hinged to the corresponding frames. The rod body is connected to the ends of the two pressure arms. The beginnings of the two pressure arms are hinged to tensioning rollers. Several intermediate transfer rollers are arranged alternately on both sides of the tensioning rollers. The front tensioning assembly is connected to the inclined rotating bar through the bottom roller hinged to the bottom surface of the middle frame. The upper and lower tensioning assemblies are connected to the upper and lower inclined bars through the steering rollers hinged to the upper and lower sides of the triangular rotating bar, respectively.

[0006] Furthermore, the vertical roller assembly includes a vertical roller motor, which is installed on the top surface of the middle 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, and a triangular rotating bar is installed inside the docking frame opening.

[0007] Furthermore, the bottom chain mechanism includes a bottom belt motor, which is installed 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 and is connected to the vertical rollers hinged to the input side of the mounting base through the staggered vertical roller group. The output side of the mounting base is provided with an angle plate, and a pressure belt clamp is provided behind the angle 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 through 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 rear 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. The output side of the negative pressure box is connected to the pressure belt roller group.

[0008] The beneficial effects of this utility model are as follows: This utility model can provide composite unwinding and feeding for a production line of two zipper bags. During feeding, the bag belt is tensioned, driven, and positioned by a three-stage tensioning assembly, an unwinding cylinder, a drive assembly, and a vertical roller assembly. Combined with the symmetrical feeding, positioning, and punching design of the bottom chain assembly, the upper and lower bag belts, bottom belt, and zipper belt are composited in three layers at the pressure roller assembly, which ensures the stability of the feeding and greatly improves the production efficiency of the production line. It has the characteristics of compact structure. Attached Figure Description

[0009] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a front view sectional view of the present invention; Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a schematic diagram of the right-side structure of the present invention at the middle frame; Figure 5 This is a schematic diagram of the left-side structure of the middle frame of this utility model.

[0010] The reference numerals in the attached diagram are explained as follows: 1. Front frame; 2. Unwinding cylinder; 3. Winding arm; 4. Winding shaft; 5. Bag roll; 501. Upper bag belt; 502. Lower bag belt; 6. Middle frame; 601. Butt joint frame opening; 7. Angled rotating bar; 8. Cutter; 801. Knife holder; 9. Triangular rotating bar; 10. Tail frame; 11. Carrier plate; 1101. Wing plate; 12. Bottom belt; 13. Zipper belt; 14. Feeding motor A; 15. Pressure roller; 16. Drive roller; 17. Feeding motor B; 18. Tensioner. 19. Tilting cylinder; 20. Tilting arm; 21. Pressure bar; 22. Pressure arm; 23. Tensioning roller; 24. Transfer roller; 25. Bottom roller; 26. Steering roller; 27. Vertical roller motor; 28. Drive vertical roller; 29. ​​Feed vertical roller; 30. Discharge vertical roller; 31. Bottom belt motor; 32. Staggered vertical roller group; 32. Mounting base; 3201. Vertical roller; 3202. Angle plate; 33. Pressure belt clamp; 34. Negative pressure box; 35. Punching seat; 36. Punching cylinder; 37. Pressure belt roller group. Detailed Implementation

[0011] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0012] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0013] The present invention will be further described below with reference to the accompanying drawings: like Figures 1 to 5As shown, a composite unwinding device for producing zipper bags includes a front frame 1. The upper and lower sides of the outer walls of the two side guards of the front frame 1 are respectively hinged to the cylinder body of an unwinding cylinder 2 and the head end of a winding arm 3. The piston rod of the unwinding cylinder 2 is hinged to the arm body of the winding arm 3. The ends of the two winding arms 3 are rotatably connected to a winding shaft 4. The sprocket at the end of the winding shaft 4 is connected to the output sprocket of a feeding motor A14 in the drive assembly via a chain ring. The feeding motor A14 is mounted on one side of the winding arm 3. The inner walls of the two side guards of the front frame 1 are bolted to vertical waist holes on the mounting plates on both sides of a pressure roller 15. The bottom of the pressure roller 15 is clearance-fitted with the top of a drive roller 16. The shaft of the drive roller 16 is connected to a feeding motor B17 on the outer wall of the guard. The drive assembly pulls the bag roll 5 on the winding shaft 4 to a front tensioning assembly. The front tensioning assembly is connected to a diagonal rotating bar 7 inside a middle frame 6. A vertical roller assembly is located behind the diagonal rotating bar 7.

[0014] In this embodiment, the vertical roller assembly includes a vertical roller motor 26, which is mounted on the top surface of the middle frame 6. The output end of the vertical roller motor 26 is vertically connected downward to the drive vertical roller 27 inside the middle frame 6. The drive vertical roller 27 is staggered with the feed and discharge vertical rollers on both sides. The feed vertical roller 28 is connected to the inclined rotating bar 7, and the discharge vertical roller 29 is connected to the cutter 8. The cutter holder 801 of the cutter 8 is mounted on one side of the docking frame opening 601 between the middle frame 6 and the tail frame 10. A triangular rotating bar 9 is installed inside the docking frame opening 601. The cutter 8 cuts the bag strap in half into an upper bag strap 501 and a lower bag strap 502. The upper and lower bag straps are connected to the upper and lower tensioning components in the tail frame 10 via the upper and lower inclined bars of the triangular rotating bar 9, respectively.

[0015] In this embodiment, the tensioning assembly includes a pair of tensioning cylinders 18. The cylinder bodies of the front, upper, and lower tensioning cylinders 18 are symmetrically hinged to the front, middle, and tail frames, respectively. The piston rod of the tensioning cylinder 18 is hinged to the end of the flipping arm 19. The heads of the two flipping arms 19 are connected through pressure rods 20. The two sides of the pressure rods 20 are hinged to the corresponding frames. The rod body of the pressure rods 20 is connected to the ends of the two pressure arms 21. The heads of the two pressure arms 21 are hinged to tensioning rollers 22. Several intermediate transfer rollers 23 are arranged alternately on both sides of the tensioning rollers 22. The front tensioning assembly is connected to the inclined rotating bar 7 through the bottom roller 24 hinged to the bottom surface of the middle frame 6. The upper and lower tensioning assemblies are connected to the upper and lower inclined bars through the steering rollers 25 hinged to the upper and lower sides of the triangular rotating bar 9, respectively. The upper and lower tensioning assemblies pull the upper and lower bag straps to the output end of the tail frame 10.

[0016] In this embodiment, a bottom chain mechanism is installed on the middle carrier plate 11 of the tail frame 10. The bottom chain mechanism includes a bottom belt motor 30, which is installed on the bottom surface of the two side wing plates 1101 at the front end of the carrier plate 11. The output shaft of the bottom belt motor 30 passes through the top surface of the wing plate 1101 and is connected to the vertical roller 3201 hinged to the input side of the mounting base 32 via the staggered vertical roller group 31. The output side of the mounting base 32 is provided with a corner plate 3202, and a pressure plate is provided behind the corner plate 3202. The belt clamp 33 has a bottom plate with both ends connected to the tail frame 10. The bottom plate is connected to the top plate by bolts. The gaps between the belt clamps 33 are divided into several segments by the bolts. The tail end of the carrier plate 11 is equipped with a negative pressure box 34. The negative pressure box 34 has punch seats 35 on both sides of its open opening. The top surface of the punch seat 35 is equipped with the cylinder body of the punch cylinder 36. The cutter head of the punch cylinder 36 can extend into the groove opened in the punch seat 35. The output side of the negative pressure box 34 is connected to the belt pressing roller group 37. The bottom chain mechanism pulls the bottom belt 12 and the zipper belt 13 to the belt pressing roller group 37 to combine with the upper and lower bag belts.

[0017] The working principle of this utility model is as follows: The two feeding motors in the drive assembly are started, causing the bag roll 5 to be released laterally. After passing through the front tensioning assembly, the bag roll passes around the bottom roller 24 and enters the inclined rotating bar 7 for folding. After folding, the bag roll passes longitudinally through the feed vertical roller 28, drive vertical roller 27 and discharge vertical roller 29 and then contacts the cutter 8. The cutter 8 cuts the middle of the bag roll. The cut upper bag roll 501 and lower bag roll 502 are folded by the upper and lower inclined bars of the triangular rotating bar 9, respectively, and then enter the upper and lower tensioning assemblies through the turning roller 25, and then converge at the pressure roller group 37.

[0018] During the above process, the bottom belt motors 30 on both sides of the bottom chain mechanism release the bottom belt 12. After passing through the staggered vertical roller group 31, the bottom belt 12 turns to the corner plate 3202 at the vertical roller 3201 and is folded around the sharp corner of the corner plate 3202. The inner surface of the fold is made of non-heat-sealed material. After folding, it enters the pressure belt clamping plate 33 and is flattened on both sides. The flattened bottom belt 12 is punched with waist holes at the punching cylinder 36. At the same time, the two zipper belts 13 enter the middle of the pressure belt clamping plate 33 through the wire holes on both sides of the middle frame 6, 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 37 to press them into a three-layer composite belt. The composite belt is output laterally to the downstream equipment.

[0019] This utility model can provide composite unwinding and feeding for a production line of two zipper bags. During feeding, the bag belt is tensioned, driven, and positioned by a three-stage tensioning assembly, unwinding cylinder 2, drive assembly, and vertical roller assembly. Combined with the symmetrical feeding, positioning, and punching design of the bottom chain assembly, the upper and lower bag belts, bottom belt 12, and zipper belt 13 are composited at the pressure roller group 37, which ensures the stability of the feeding and greatly improves the production efficiency of the production line. It has the characteristics of compact structure.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A composite unwinding device for producing a zippered bag, comprising a front frame (1), characterized in that: The upper and lower sides of the outer wall of the two side guards of the front frame (1) are respectively hinged to the cylinder body of the unwinding cylinder (2) and the head end of the winding arm (3). The piston rod of the unwinding cylinder (2) is hinged to the arm body of the winding arm (3). The ends of the two winding arms (3) are rotatably connected to the shaft (4). The bag roll (5) on the shaft (4) is pulled to the front tensioning component by the drive component. The front tensioning component is connected to the inclined rotating bar (7) in the middle frame (6). The vertical roller component behind the inclined rotating bar (7) cooperates with the cutter (8) to cut the bag belt in half into the upper bag belt (501) and the lower bag belt (502). The upper and lower bag belts are connected to the upper and lower tensioning components in the tail frame (10) through the upper and lower inclined bars of the triangular rotating bar (9). The bottom chain mechanism on the middle carrier plate (11) of the tail frame (10) pulls the bottom belt (12), the zipper belt (13) and the upper and lower bag belts to combine.

2. The composite unwinding device for producing a zippered bag according to claim 1, characterized in that: The drive assembly includes a feeding motor A (14), which is mounted on a side arm (3). The output sprocket of the feeding motor A (14) is connected to the end sprocket of the reel (4) via a chain ring. The inner walls of the guard plates on both sides of the front frame (1) are connected to the vertical waist holes on the mounting plates on both sides of the pressure roller (15) via bolts. The bottom of the pressure roller (15) is clearance-fitted with the top of the drive roller (16). The shaft of the drive roller (16) is connected to the feeding motor B (17) on the outer wall of the guard plate.

3. The composite unwinding device for producing a zipper bag according to claim 1, wherein: The tensioning assembly includes a pair of tensioning cylinders (18). The cylinder bodies of the front, upper and lower tensioning cylinders (18) are symmetrically hinged to the front, middle and rear frames, respectively. The piston rod of the tensioning cylinder (18) is hinged to the end of the flipping arm (19). The beginnings of the flipping arms (19) on both sides are connected by pressure rods (20). The pressure rods (20) are hinged to the corresponding frames on both sides. The rod body of the pressure rods (20) is connected to the ends of the two pressure arms (21). The beginnings of the two pressure arms (21) are hinged to the tensioning rollers (22). Several intermediate transfer rollers (23) are arranged alternately on both sides of the tensioning rollers (22). The front tensioning assembly is connected to the inclined rotating bar (7) through the bottom roller (24) hinged to the bottom surface of the middle frame (6). The upper and lower tensioning assemblies are connected to the upper and lower inclined bars through the steering rollers (25) hinged to the upper and lower sides of the triangular rotating bar (9), respectively.

4. The composite unwinding device for producing a zipper bag according to claim 1, wherein: The vertical roller assembly includes a vertical roller motor (26), which is installed on the top surface of the middle frame (6). The output end of the vertical roller motor (26) is vertically connected to the drive vertical roller (27) inside the middle frame (6). The drive vertical roller (27) is staggered with the feed vertical rollers on both sides. The feed vertical roller (28) is connected to the inclined rotating bar (7), and the discharge vertical roller (29) is connected to the cutter (8). The cutter holder (801) of the cutter (8) is installed on one side of the docking frame opening (601) between the middle frame (6) and the tail frame (10). A triangular rotating bar (9) is installed inside the docking frame opening (601).

5. The composite unwinding device for producing a zipper bag according to claim 1, wherein: The bottom chain mechanism includes a bottom belt motor (30), which is installed on the bottom surface of the two wing plates (1101) at the front end of the carrier plate (11). The output shaft of the bottom belt motor (30) passes through the top surface of the wing plate (1101). The output shaft is connected to the vertical roller (3201) hinged to the input side of the mounting base (32) through the staggered vertical roller group (31). The output side of the mounting base (32) is provided with a corner plate (3202). A pressure plate (33) is provided behind the corner plate (3202). 3) The bottom plate is connected to the tail frame (10) at both ends. The bottom plate is connected to the top plate by bolt group. The gap between the pressure belt clamps (33) is divided into several sections by bolt group. The tail end of the carrier plate (11) is provided with a negative pressure box (34). The negative pressure box (34) is provided with punching seats (35) on both sides of the opening. The top surface of the punching seat (35) is equipped with the cylinder body of the punching cylinder (36). The cutter head of the punching cylinder (36) can be inserted into the groove opened in the punching seat (35). The output side of the negative pressure box (34) is connected to the pressure belt roller group (37).

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