A punching device for plastic bags

Abstract

The utility model discloses a kind of punching device for plastic bag, it includes base, the top of the base is fixedly installed with four support rods, and the top between four support rods is fixedly installed with top plate, and the top of top plate is installed with forward and reverse motor, and the bottom of top plate is rotatably installed with the threaded shaft connected with the output end of forward and reverse motor, and the threaded connection between the threaded shaft and the lifting plate slidably installed between four support rods, hollow cutter is installed on lifting plate, and the top of base is provided with placing groove, and the bottom of placing groove is provided with punching groove, and the lower part between four support rods is fixedly installed with inverted U-shaped plate, and movable overturning collection box is installed in the inside of inverted U-shaped plate, and one end of base is fixedly installed with U-shaped material discharging plate;The punching device has waste automatic export and collection discharge processing structure, and the performance thereof can meet the use requirement of plastic bag punching processing.

Description

Technical Field

[0001] This utility model belongs to the field of punching technology, specifically a punching device for plastic bags. Background Technology

[0002] Plastic bag punching refers to the process of punching holes in plastic bags using mechanical equipment during the production or processing of plastic bags. Punching can be used for various purposes, such as facilitating ventilation and moisture wicking, preventing static electricity buildup, or serving as handle holes or hanging holes for hanging and sealing the bags. The shapes and sizes of punched holes are diverse, with common shapes including round, oval, and rectangular. The specific design depends on the intended use of the plastic bag and customer requirements. This process is generally completed using punching machines and molds, offering high efficiency and precision, and is one of the commonly used processing methods in the plastic packaging industry.

[0003] When creating air holes in plastic bags, a hollow knife is usually used. The hollow knife can cut the plastic to create neat and aesthetically pleasing air holes on the plastic bag, and at the same time, it can collect the generated waste. However, the existing punching setup does not have a waste discharge and collection structure, resulting in insufficient use of the equipment. Therefore, improvements are needed to address the above problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a punching device for plastic bags, comprising a base, four support rods fixedly installed on the top of the base, a top plate fixedly installed between the tops of the four support rods, a reversible motor installed on the top of the top plate, a threaded shaft rotatably installed at the bottom of the top plate and connected to the output end of the reversible motor, a lifting plate slidably installed between the four support rods and threadedly connected to the threaded shaft, a hollow knife installed on the lifting plate, a placement groove opened on the top of the base, a punching groove opened at the bottom of the placement groove, an inverted U-shaped plate fixedly installed between the lower parts of the four support rods, a movable and flip-up collection box installed inside the inverted U-shaped plate, and a U-shaped discharge plate fixedly installed at one end of the base.

[0005] Preferably, the hollow knife includes a hollow knife body fixedly installed on the lifting plate, a fixing rod is movably inserted into the top of the hollow knife body, the fixing rod is fixedly connected to the bottom of the top plate, and an extrusion plate is fixedly installed at the bottom of the hollow knife body inside the fixing rod.

[0006] Preferably, the inverted U-shaped plate has sliding grooves on both sides near the U-shaped discharge plate. Large-pitch threaded rods are rotatably installed inside each sliding groove. Moving sleeves, slidably installed inside the sliding grooves, are threaded onto the surfaces of both large-pitch threaded rods. A flipping shaft is rotatably installed between the two moving sleeves. One end of the collection box is fixedly connected to the middle of the flipping shaft, and transmission gears are fixedly installed on both sides of the flipping shaft. Gear plates matching the transmission gears are fixedly installed at the bottom ends of both sliding grooves. Sliding grooves are opened in the middle of both sides of the top of the inverted U-shaped plate. Sliding rods are fixedly installed at both ends of the collection box. One end of each sliding rod is located inside the two sliding grooves and slides in contact with them.

[0007] Preferably, the inverted U-shaped plate has notches on both sides of the center. One end of each of the two large-pitch threaded rods extends movably into the interior of the two notches and is fixedly mounted with a bevel gear. An adjusting rod is rotatably mounted between the interiors of the two notches. Two bevel gears are symmetrically fixedly mounted on both sides of the adjusting rod. The two bevel gears are respectively meshed with the two bevel gears. An adjusting gear is fixedly mounted in the center of the adjusting rod. A vertical plate is fixedly mounted at the bottom of the lifting plate. A rack that matches and meshes with the adjusting gear is fixedly mounted on the lower part of one side of the vertical plate.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This punching device has an automatic waste discharge and collection and discharge treatment structure. The automatic waste discharge structure can automatically push out the waste after punching is completed, while the centralized collection and treatment structure can collect and discharge the automatically discharged waste, thereby effectively improving the efficiency and quality of punching processing. Place the stacked plastic bags inside the placement slot, aligning the openings of the plastic bags with the punching slot and the hollow knife body. Then start the forward and reverse motor to rotate the threaded shaft. The rotation of the threaded shaft will cause the lifting plate to move down, which in turn will cause the hollow knife body, vertical plate, and rack to move down. The downward movement of the rack drives the adjusting gear, which in turn drives the adjusting rod to rotate the two bevel gears. The rotation of the two bevel gears drives the two bevel gears, which in turn drive the two large-pitch threaded rods to rotate. The rotation of the two large-pitch threaded rods causes the moving sleeve to move the flipping shaft and the collection box, thereby removing the collection box from below the hollow knife body. As the moving sleeve moves, the transmission gear rolls on the toothed plate, causing the flipping shaft to flip the collection box, thus dumping the waste inside the collection box into the U-shaped discharge plate for centralized discharge and collection. Then the rack separates from the vertical plate, and the downward-moving vertical plate and rack insert into the through groove. After the collection box is removed from below the hollow blade body, the descending hollow blade body punches holes in the plastic bag. Simultaneously, through its interaction with the punching slot, the waste generated during punching gets stuck inside the hollow blade body. Then, by reversing the forward and reverse motors, the hollow blade body and collection box are reset. When the collection box is reset and moved directly below the hollow blade body, as the hollow blade body continues to move upward, the extrusion plate pushes and extrudes the waste stuck inside the hollow blade body, thereby collecting the waste into the collection box. Attached Figure Description

[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0010] In the attached diagram: Figure 1 This is a front sectional view of the punching device for plastic bags according to this utility model; Figure 2 This is a front view structural diagram of the punching device for plastic bags according to this utility model; Figure 3 This utility model Figure 1 A schematic diagram of a partial structure; Figure 4 This utility model Figure 3 A schematic diagram of a partial structure; In the diagram: 1. Base; 2. Support rod; 3. Top plate; 4. Forward and reverse motor; 5. Threaded shaft; 6. Lifting plate; 7. Hollow knife; 8. Placement slot; 9. Punching slot; 10. Inverted U-shaped plate; 11. Collection box; 12. U-shaped discharge plate; 13. Hollow knife body; 14. Fixing rod; 15. Extrusion plate; 16. Sliding groove; 17. Large pitch threaded rod; 18. Moving sleeve; 19. Tilting shaft; 20. Transmission gear; 21. Tooth plate; 22. Sliding groove; 23. Slide rod; 24. Notch; 25. Bevel gear one; 26. Adjusting rod; 27. Bevel gear two; 28. Adjusting gear; 29. ​​Vertical plate; 30. Rack. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0012] Depend on Figures 1 to 4The present invention includes a base 1, four support rods 2 fixedly mounted on the top of the base 1, a top plate 3 fixedly mounted between the tops of the four support rods 2, a reversible motor 4 mounted on the top of the top plate 3, a threaded shaft 5 rotatably mounted on the bottom of the top plate 3 and connected to the output end of the reversible motor 4, a lifting plate 6 threadedly connected to the threaded shaft 5 and slidably mounted between the four support rods 2, a hollow knife 7 mounted on the lifting plate 6, a placement groove 8 opened on the top of the base 1, a punching groove 9 opened at the bottom of the placement groove 8, the punching groove 9 being directly below the hollow knife 7, an inverted U-shaped plate 10 fixedly mounted between the lower parts of the four support rods 2, a movable and flip-able collection box 11 installed inside the inverted U-shaped plate 10, the collection box 11 being located between the punching groove 9 and the hollow knife 7, and a U-shaped discharge plate 12 fixedly mounted on one end of the base 1.

[0013] The hollow blade 7 includes a hollow blade body 13 fixedly installed on the lifting plate 6. A fixing rod 14 is movably inserted into the top of the hollow blade body 13. The fixing rod 14 is fixedly connected to the bottom of the top plate 3. An extrusion plate 15 is fixedly installed at the bottom of the hollow blade body 13, thereby effectively extruding the punched waste material.

[0014] Sliding grooves 16 are provided on both sides of the inverted U-shaped plate 10 near the U-shaped discharge plate 12. Large-pitch threaded rods 17 are rotatably installed inside the two sliding grooves 16. Moving sleeves 18, which are slidably installed inside the sliding grooves 16, are threadedly connected to the surfaces of the two large-pitch threaded rods 17. A flipping shaft 19 is rotatably installed between the two moving sleeves 18. One end of the collection box 11 is fixedly connected to the middle of the flipping shaft 19, and transmission gears 20 are fixedly installed on both sides of the flipping shaft 19. Tooth plates 21 that match the transmission gears 20 are fixedly installed at the bottom of the two sliding grooves 16. Sliding grooves 22 are provided in the middle of the top two sides of the inverted U-shaped plate 10. Sliding rods 23 are fixedly installed at both ends of the collection box 11. One end of each sliding rod 23 is located inside the two sliding grooves 22 and slides in contact with the sliding grooves 22, thereby effectively adjusting the installation, movement, and flipping of the collection box 11.

[0015] The inverted U-shaped plate 10 has recesses 24 on both sides of its inner center. One end of each of the two large-pitch threaded rods 17 extends movably into the interior of the two recesses 24 and is fixedly mounted with a bevel gear 25. An adjusting rod 26 is rotatably mounted between the interiors of the two recesses 24. Two bevel gears 27 are symmetrically fixedly mounted on both sides of the adjusting rod 26. The two bevel gears 27 are respectively meshed with the two bevel gears 25. An adjusting gear 28 is fixedly mounted in the middle of the adjusting rod 26. A vertical plate 29 is fixedly mounted at the bottom of the lifting plate 6. A rack 30 that matches and meshes with the adjusting gear 28 is fixedly mounted on the lower part of one side of the vertical plate 29. A through groove is opened at the top of the base 1, located directly below the vertical plate 29 and the rack 30. The through groove matches the vertical plate 29 and the rack 30, thereby enabling effective transmission adjustment.

[0016] Specifically, the stacked plastic bags are placed inside the placement slot 8, and the opening of the plastic bags is aligned with the punching slot 9 and the hollow knife body 13. Then, the forward and reverse motor 4 is started to rotate the threaded shaft 5. The rotation of the threaded shaft 5 will cause the lifting plate 6 to move down. The movement of the lifting plate 6 will drive the hollow knife body 13, the vertical plate 29 and the rack 30 to move down. The downward movement of rack 30 will drive adjusting gear 28, causing adjusting rod 26 to drive two bevel gears 27 to rotate. The rotation of two bevel gears 27 will drive two bevel gears 25, causing two large-pitch threaded rods 17 to rotate. The rotation of two large-pitch threaded rods 17 will cause moving sleeve 18 to drive flipping shaft 19 and collection box 11 to move, thereby removing collection box 11 from below hollow knife body 13. As moving sleeve 18 moves, transmission gear 20 will roll on toothed plate 21, causing flipping shaft 19 to drive collection box 11 to flip, thereby dumping the waste inside collection box 11 into U-shaped discharge plate 12 for centralized discharge and collection. Then rack 30 will separate from vertical plate 29, and the downward-moving vertical plate 29 and rack 30 will be inserted into the through groove. When the collection box 11 is removed from below the hollow knife body 13, the lowered hollow knife body 13 will punch holes in the plastic bag, and at the same time, through cooperation with the punching slot 9, the waste generated by punching will be stuck inside the hollow knife body 13. Then, by reversing the forward and reverse motor 4, the hollow blade body 13 and the collection box 11 are reset. When the collection box 11 is reset and moved directly below the hollow blade body 13, as the hollow blade body 13 continues to move upward, the extrusion plate 15 will push and squeeze out the waste material stuck inside the hollow blade body 13, thereby collecting the waste material into the inside of the collection box 11. The above operations completed one punching, waste collection and discharge operation.

[0017] This punching device features an automatic waste discharge and collection system. The automatic waste discharge system pushes out the waste after punching, while the centralized collection system collects and discharges the automatically discharged waste, effectively improving the efficiency and quality of the punching process. Furthermore, this punching device has a simple design, is easy to use, and offers stable and reliable processing. Its performance meets the requirements for punching plastic bags.

Claims

1. A punching device for plastic bags, comprising a base (1), characterized in that: Four support rods (2) are fixedly installed on the top of the base (1). A top plate (3) is fixedly installed between the tops of the four support rods (2). A reversible motor (4) is installed on the top of the top plate (3). A threaded shaft (5) connected to the output end of the reversible motor (4) is rotatably installed on the bottom of the top plate (3). A lifting plate (6) connected to the threaded shaft (5) is slidably installed between the four support rods (2). A hollow knife (7) is installed on the lifting plate (6). A placement groove (8) is opened on the top of the base (1). A punching groove (9) is opened on the bottom of the placement groove (8). An inverted U-shaped plate (10) is fixedly installed between the lower parts of the four support rods (2). A movable and flip-out collection box (11) is installed inside the inverted U-shaped plate (10). A U-shaped discharge plate (12) is fixedly installed at one end of the base (1).

2. The punching device for plastic bags according to claim 1, characterized in that: The hollow knife (7) includes a hollow knife body (13) fixedly installed on the lifting plate (6). A fixing rod (14) is movably inserted into the top of the hollow knife body (13). The fixing rod (14) is fixedly connected to the bottom of the top plate (3). A pressing plate (15) is fixedly installed at the bottom of the hollow knife body (13).

3. A punching device for plastic bags according to claim 1, characterized in that: The inverted U-shaped plate (10) has sliding grooves (16) on both sides near the U-shaped discharge plate (12). Large-pitch threaded rods (17) are rotatably installed inside the two sliding grooves (16). The surfaces of the two large-pitch threaded rods (17) are threadedly connected to movable sleeves (18) that are slidably installed inside the sliding grooves (16). A flipping shaft (19) is rotatably installed between the two movable sleeves (18). One end of the collection box (11) is fixedly connected to the middle of the flipping shaft (19). Transmission gears (20) are fixedly installed on both sides of the flipping shaft (19). A toothed plate (21) matching the transmission gear (20) is fixedly installed at one end of the bottom of the two sliding grooves (16). Sliding grooves (22) are opened in the middle of both sides of the top of the inverted U-shaped plate (10). Sliding rods (23) are fixedly installed at both ends of the collection box (11). One end of the two sliding rods (23) is located inside the two sliding grooves (22) and slides in contact with the sliding grooves (22).

4. A punching device for plastic bags according to claim 3, characterized in that: The inverted U-shaped plate (10) has notches (24) on both sides of the middle part. One end of each of the two large-pitch threaded rods (17) extends into the interior of the two notches (24) and is fixedly installed with bevel gears (25). An adjusting rod (26) is rotatably installed between the interiors of the two notches (24). Two bevel gears (27) are symmetrically fixedly installed on both sides of the adjusting rod (26). The two bevel gears (27) mesh with the two bevel gears (25) respectively. An adjusting gear (28) is fixedly installed in the middle of the adjusting rod (26). A vertical plate (29) is fixedly installed at the bottom of the lifting plate (6). A rack (30) that matches and meshes with the adjusting gear (28) is fixedly installed on the lower part of one side of the vertical plate (29).

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