Cutting device for plastic bag production

Abstract

The utility model relates to the technical field of plastic bag production, and discloses a cutting device for plastic bag production, which comprises a workbench, the upper surface of the workbench is fixedly connected with a support, the outer wall of the support is fixedly connected with a first motor, and the output end of the first motor is fixedly provided with a transmission shaft. A rotating plate is fixedly connected to the outer wall of the transmission shaft, a fixed shaft is fixedly connected to the outer wall of the rotating plate, a sliding plate is slidably connected to the outer wall of the fixed shaft, a connecting plate is fixedly connected to the outer wall of the sliding plate, a limiting block is fixedly connected to the outer wall of the connecting plate, and a supporting plate is slidably connected to the outer wall of the limiting block; and the lower surface of the connecting plate is fixedly connected with a blade. According to the plastic bag cutting device, the first motor is started to drive the transmission shaft to rotate, the rotating plate, the fixing shaft, the sliding plate, the connecting plate, the limiting block and the supporting plate are matched to drive the blade to cut in a reciprocating mode, and the effect that the cutting sizes of plastic bags are consistent through synchronization of reciprocating cutting of the blade and conveying of the plastic bags is achieved.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag production technology, and in particular to a cutting device for plastic bag production. Background Technology

[0002] Plastic bags are thin film bags made primarily of plastics (such as polyethylene and polypropylene), widely used in packaging, shopping, and food preservation. Cutting devices can precisely cut plastic films into the required sizes and shapes, ensuring product quality and consistency; therefore, a cutting device for plastic bag production is used.

[0003] A search revealed Chinese Patent Publication No. CN216634622U, which discloses a cutting device for producing PE plastic bags. The device includes: a cutting assembly for cutting the plastic bag; a traction assembly for guiding the plastic bag to the cutting assembly; an adjusting assembly for adjusting the height of the traction assembly; and a balancing assembly for maintaining the balance of the adjusting assemblies on both sides. The cutting assembly, used to cut the plastic bag, includes a base plate, a first support, a cutter, a cylinder, and a lower cutter. The first support is mounted on one side of the top of the base plate, the cylinder is mounted on the top of the first support, the cutter is mounted on the telescopic end of the cylinder, and the lower cutter is fixedly connected to the base plate. The lower cutter is located directly below the lower cutter. When the plastic bag is moved below the lower cutter, the cylinder drives the cutter downwards, thereby cutting the plastic bag.

[0004] In the above-mentioned utility model, the traction component uses a downward-pressing conveyor belt for traction, which increases the contact area between the conveyor belt and the plastic bag, making the feeding more stable, the cutting quality better, and the cut plastic bags of uniform length. However, in actual use, it is difficult to ensure that the reciprocating cutting time of the blade is consistent and that the cutting size of the plastic bag is the same each time, as it is only driven by the cylinder to cut the plastic bag. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cutting device for plastic bag production, which aims to improve the problem that it is difficult to ensure that the reciprocating cutting time of the control blade is consistent, and it is also difficult to control the cutting size of the plastic bag to be the same each time.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cutting device for producing plastic bags, comprising a workbench, a support fixedly connected to the upper surface of the workbench, a first motor fixedly connected to the outer wall of the support, a transmission shaft fixedly installed at the output end of the first motor, the outer wall of the transmission shaft rotatably connected to the inside of the support, a rotating plate fixedly connected to the outer wall of the transmission shaft, a fixed shaft fixedly connected to the outer wall of the rotating plate, a sliding plate slidably connected to the outer wall of the fixed shaft, a connecting plate fixedly connected to the outer wall of the sliding plate, a limit block fixedly connected to the outer wall of the connecting plate, a support plate slidably connected to the outer wall of the limit block, the lower surface of the support plate fixedly connected to the upper surface of the workbench, a blade fixedly connected to the lower surface of the connecting plate, and a conveying assembly provided on the outer wall of the workbench.

[0007] Through the above technical solution: the workbench fixes the support, the support fixes the first motor, the workbench is designed in a sloping shape to facilitate the feeding of the cut plastic bags, the first motor drives the rotating plate and the fixed shaft to rotate through the transmission shaft, and then drives the connecting plate to slide through the sliding plate. The connecting plate fixes the blade, so that the blade can slide at the same time. The reciprocating movement of the blade can reciprocate to cut the plastic bag.

[0008] As a further description of the above technical solution:

[0009] The conveying assembly includes a fixed plate, the outer wall of which is fixedly connected to the outer wall of the workbench. A second motor is fixedly connected to the outer wall of the fixed plate. An active roller is fixedly installed at the output end of the second motor. The outer wall of the active roller is rotatably connected to the inside of the fixed plate. A driven roller is installed inside the fixed plate.

[0010] Through the above technical solution: the worktable fixes the fixed plate, the fixed plate fixes the second motor, the start of the second motor can drive the drive roller to rotate, and through the cooperation between the drive roller and the driven roller, the plastic bag can be conveyed.

[0011] As a further description of the above technical solution:

[0012] A connecting frame is fixedly connected to the outer wall of the workbench, a cylinder is fixedly connected inside the connecting frame, and a push block is fixedly connected to the output end of the cylinder.

[0013] Through the above technical solution: the worktable plays a role in fixing the connecting frame, the connecting frame plays a role in fixing the cylinder, and the cylinder can drive the push block to slide by starting.

[0014] As a further description of the above technical solution:

[0015] The push block has a sliding connection to a limiting strip inside, and the lower surface of the limiting strip is fixedly connected to the upper surface of the connecting frame.

[0016] Through the above technical solution: the connecting frame plays a role in fixing the limiting strip. When the push block slides, it will be limited by the limiting strip, effectively preventing deviation during the sliding process.

[0017] As a further description of the above technical solution:

[0018] The push block has a sliding groove inside, and a rotating plate is rotatably connected to the outer wall of the push block. A pressure plate is fixedly connected to the lower surface of the rotating plate.

[0019] The above technical solution allows the sliding column to slide along the shape of the sliding groove, and the sliding of the push block can indirectly cause the rotating plate to rotate. The fixing effect of the rotating plate on the pressure plate can make the pressure plate rotate synchronously and limit the downward pressure of the plastic bag.

[0020] As a further description of the above technical solution:

[0021] The rotating plate is fixedly connected to a sliding column inside, and the outer wall of the sliding column is slidably connected to the inside of the sliding groove.

[0022] The above technical solution involves fixing the sliding column with a rotating plate. When the rotating plate rotates, it drives the sliding column to slide stably along the shape of the groove.

[0023] As a further description of the above technical solution:

[0024] The rotating plate is fixedly connected to a connecting shaft inside, and a fixing block is rotatably connected to the outer wall of the connecting shaft.

[0025] The above technical solution works by connecting the connecting shaft. When the rotating plate rotates, it drives the connecting shaft to rotate simultaneously through the fixed block, thereby providing stable support for the rotation of the connecting shaft through the fixed block.

[0026] As a further description of the above technical solution:

[0027] The outer wall of the fixing block is rotatably connected to the outer wall of the rotating plate, and the lower surface of the fixing block is fixedly connected to the upper surface of the connecting frame.

[0028] Through the above technical solution: the connecting frame supports and fixes the fixed block, and the rotating plate rotates on the outer wall of the fixed block.

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, the first motor is started to drive the transmission shaft to rotate. Through the cooperation between the rotating plate, the fixed shaft, the sliding plate, the connecting plate, the limiting block and the support plate, the blade is driven to reciprocate and cut, so as to achieve the effect of synchronous cutting of the plastic bag with the plastic bag and ensuring that the plastic bag is cut to a consistent size.

[0031] 2. In this utility model, the starting cylinder pushes the push block to slide. Through the cooperation between the rotating plate, sliding column, connecting shaft, fixed block and pressure plate, the pressure plate is driven to press down to press the plastic bag, so as to achieve the effect of pressing and limiting the plastic bag of different thicknesses and preventing it from moving or deforming during cutting. Attached Figure Description

[0032] Figure 1 This is a perspective view of a cutting device for producing plastic bags according to the present invention;

[0033] Figure 2 This is a partial structural diagram of the blade of a cutting device for plastic bag production proposed in this utility model;

[0034] Figure 3 This is a partial structural diagram of the rotating plate of a cutting device for plastic bag production proposed in this utility model;

[0035] Figure 4 This is a partial structural diagram of the pusher block of a cutting device for plastic bag production proposed in this utility model.

[0036] Legend:

[0037] 1. Workbench; 2. Support; 3. First motor; 4. Drive shaft; 5. Rotating plate; 6. Fixed shaft; 7. Slide plate; 8. Connecting plate; 9. Limiting block; 10. Support plate; 11. Blade; 12. Conveying assembly; 1201. Fixed plate; 1202. Second motor; 1203. Drive roller; 1204. Driven roller; 13. Connecting frame; 14. Cylinder; 15. Push block; 16. Limiting strip; 17. Slide groove; 18. Rotating plate; 19. Sliding column; 20. Connecting shaft; 21. Fixed block; 22. Pressure plate. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3An embodiment of this utility model provides a cutting device for producing plastic bags, including a workbench 1, a support 2 fixedly connected to the upper surface of the workbench 1, a first motor 3 fixedly connected to the outer wall of the support 2, a transmission shaft 4 fixedly installed at the output end of the first motor 3, the outer wall of the transmission shaft 4 rotatably connected to the inside of the support 2, a rotating plate 5 fixedly connected to the outer wall of the transmission shaft 4, a fixed shaft 6 fixedly connected to the outer wall of the rotating plate 5, a sliding plate 7 slidably connected to the outer wall of the fixed shaft 6, a connecting plate 8 fixedly connected to the outer wall of the sliding plate 7, a limit block 9 fixedly connected to the outer wall of the connecting plate 8, a support plate 10 slidably connected to the outer wall of the limit block 9, the lower surface of the support plate 10 fixedly connected to the upper surface of the workbench 1, a blade 11 fixedly connected to the lower surface of the connecting plate 8, and a conveying assembly 12 provided on the outer wall of the workbench 1.

[0040] Specifically, the bracket 2 is fixed to the upper surface of the workbench 1 and serves to fix the first motor 3. Driven by the first motor 3, the transmission shaft 4 can rotate stably inside the bracket 2. The transmission shaft 4 fixes the rotating plate 5, allowing the rotating plate 5 to rotate with the transmission shaft 4. The rotating plate 5 fixes the fixed shaft 6, allowing the fixed shaft 6 to slide synchronously on the inner wall of the slide plate 7 through the rotation of the rotating plate 5. When the fixed shaft 6 slides, it will simultaneously push the connecting plate 8 to slide. The connecting plate 8 fixes the limiting block 9, which slides inside the support plate 10 and limits the sliding of the connecting plate 8. The connecting plate 8 fixes the blade 11, allowing it to slide only in the vertical direction. Through the reciprocating motion of the blade 11 and the constant conveying speed of the plastic bag, the cutting size of the plastic bag can be guaranteed to be the same each time.

[0041] Reference Figure 1 and Figure 2 The conveying assembly 12 includes a fixed plate 1201. The outer wall of the fixed plate 1201 is fixedly connected to the outer wall of the workbench 1. A second motor 1202 is fixedly connected to the outer wall of the fixed plate 1201. An active roller 1203 is fixedly installed at the output end of the second motor 1202. The outer wall of the active roller 1203 is rotatably connected to the inside of the fixed plate 1201. A driven roller 1204 is installed inside the fixed plate 1201.

[0042] Specifically, the fixing plate 1201 is fixed to the outer wall of the worktable 1 to fix the second motor 1202. The driving action of the second motor 1202 can make the drive roller 1203 rotate stably inside the fixing plate 1201. The fixing plate 1201 supports the driven roller 1204. By placing the plastic bag between the drive roller 1203 and the driven roller 1204, the plastic bag can be conveyed.

[0043] Reference Figure 1 , Figure 2 and Figure 4 A connecting frame 13 is fixedly connected to the outer wall of the workbench 1. A cylinder 14 is fixedly connected inside the connecting frame 13. A push block 15 is fixedly connected to the output end of the cylinder 14. A limit strip 16 is slidably connected inside the push block 15. The lower surface of the limit strip 16 is fixedly connected to the upper surface of the connecting frame 13. A sliding groove 17 is opened inside the push block 15. A rotating plate 18 is rotatably connected to the outer wall of the push block 15. A pressure plate 22 is fixedly connected to the lower surface of the rotating plate 18. A sliding column 19 is fixedly connected inside the rotating plate 18. The outer wall of the sliding column 19 is slidably connected to the inside of the sliding groove 17. A connecting shaft 20 is fixedly connected inside the rotating plate 18. A fixing block 21 is rotatably connected to the outer wall of the connecting shaft 20. The outer wall of the fixing block 21 is rotatably connected to the outer wall of the rotating plate 18. The lower surface of the fixing block 21 is fixedly connected to the upper surface of the connecting frame 13.

[0044] Specifically, the connecting frame 13 is fixed to the outer wall of the workbench 1 to fix the cylinder 14. By activating the cylinder 14, the push block 15 can be pushed to slide. The limiting strip 16 is fixed to the upper surface of the connecting frame 13 to limit the sliding of the push block 15 and prevent the push block 15 from deviating during the sliding process. The opening of the slide groove 17 allows the slide column 19 to slide stably inside the slide groove 17 through the sliding action of the push block 15. The rotating plate 18 fixes the slide column 19 and allows the rotating plate 18 to rotate through the sliding of the slide column 19. The connecting shaft 20 connects the rotating plate 18 and the fixed block 21 and allows the connecting shaft 20 to rotate stably inside the fixed block 21 through the rotation of the rotating plate 18. The connecting frame 13 fixes the fixed block 21, and the rotating plate 18 fixes the pressure plate 22, allowing the pressure plate 22 to rotate synchronously to press the plastic bag, ensuring the stability of the plastic bag during the cutting process and preventing the cutting accuracy from being affected by deviation.

[0045] Working principle: When the device is needed, the second motor 1202 is started to drive the active roller 1203 to rotate. The plastic bag is placed between the active roller 1203 and the driven roller 1204 for conveying. The cylinder 14 is started to push the push block 15 to slide through the limit strip 16. When the push block 15 slides, the slide column 19 will slide on the inner wall of the slide groove 17. The sliding of the slide column 19 will drive the rotating plate 18 to rotate. When the rotating plate 18 rotates, it will drive the connecting shaft 20 to rotate inside the fixed block 21, thereby driving the pressure plate 22 to rotate to press and limit the plastic bag, and fix the plastic bag during cutting. This achieves the effect of pressing and limiting plastic bags of different thicknesses to prevent movement or deformation during cutting.

[0046] The first motor 3 is started, driving the transmission shaft 4 to rotate. When the transmission shaft 4 rotates, it will drive the rotating plate 5 and the fixed shaft 6 to rotate simultaneously. The fixed shaft 6 will slide on the inner wall of the slide plate 7, and push the slide plate 7 to drive the connecting plate 8 to slide during the sliding process. The connecting plate 8 will drive the limiting block 9 to slide inside the support plate 10. At the same time, the connecting plate 8 will drive the blade 11 to slide, thereby cutting the plastic bag. After the cutting is completed, it will reset and drive the blade 11 to perform reciprocating cutting. The reciprocating cutting of the blade 11 and the conveying of the plastic bag are synchronized to ensure the consistent cutting size. This cutting device can not only press and limit plastic bags of different thicknesses to prevent movement or deformation during cutting, but also drive the reciprocating cutting of the blade 11 and the conveying of the plastic bag to synchronize the cutting size.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cutting device for producing plastic bags, comprising a workbench (1), characterized in that: A bracket (2) is fixedly connected to the upper surface of the workbench (1). A first motor (3) is fixedly connected to the outer wall of the bracket (2). A transmission shaft (4) is fixedly installed at the output end of the first motor (3). The outer wall of the transmission shaft (4) is rotatably connected to the inside of the bracket (2). A rotating plate (5) is fixedly connected to the outer wall of the transmission shaft (4). A fixed shaft (6) is fixedly connected to the outer wall of the rotating plate (5). A sliding plate (7) is slidably connected to the outer wall of the fixed shaft (6). A connecting plate (8) is fixedly connected to the outer wall of the sliding plate (7). A limit block (9) is fixedly connected to the outer wall of the connecting plate (8). A support plate (10) is slidably connected to the outer wall of the limit block (9). The lower surface of the support plate (10) is fixedly connected to the upper surface of the workbench (1). A blade (11) is fixedly connected to the lower surface of the connecting plate (8). A conveying assembly (12) is provided on the outer wall of the workbench (1).

2. The cutting device for plastic bag production according to claim 1, characterized in that: The conveying assembly (12) includes a fixed plate (1201), the outer wall of which is fixedly connected to the outer wall of the workbench (1), a second motor (1202) is fixedly connected to the outer wall of the fixed plate (1201), an active roller (1203) is fixedly provided at the output end of the second motor (1202), the outer wall of the active roller (1203) is rotatably connected to the inside of the fixed plate (1201), and a driven roller (1204) is provided inside the fixed plate (1201).

3. The cutting device for plastic bag production according to claim 1, characterized in that: A connecting frame (13) is fixedly connected to the outer wall of the workbench (1), and a cylinder (14) is fixedly connected inside the connecting frame (13). A push block (15) is fixedly connected to the output end of the cylinder (14).

4. The cutting device for producing plastic bags according to claim 3, characterized in that: The push block (15) has a sliding connection to a limiting strip (16), and the lower surface of the limiting strip (16) is fixedly connected to the upper surface of the connecting frame (13).

5. A cutting device for producing plastic bags according to claim 3, characterized in that: The push block (15) has a sliding groove (17) inside, and a rotating plate (18) is rotatably connected to the outer wall of the push block (15). A pressure plate (22) is fixedly connected to the lower surface of the rotating plate (18).

6. A cutting device for producing plastic bags according to claim 5, characterized in that: The rotating plate (18) is fixedly connected to a sliding column (19), and the outer wall of the sliding column (19) is slidably connected to the inside of the sliding groove (17).

7. A cutting device for producing plastic bags according to claim 5, characterized in that: The rotating plate (18) is fixedly connected to a connecting shaft (20) inside, and a fixing block (21) is rotatably connected to the outer wall of the connecting shaft (20).

8. A cutting device for producing plastic bags according to claim 7, characterized in that: The outer wall of the fixing block (21) is rotatably connected to the outer wall of the rotating plate (18), and the lower surface of the fixing block (21) is fixedly connected to the upper surface of the connecting frame (13).

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