Cutting device for processing plastic packaging bag

Abstract

The utility model discloses a cutting device for processing a plastic packaging bag, which belongs to the technical field of plastic packaging bag processing, and comprises a plurality of racks, the upper end of each rack is fixedly connected with a blanking slide way, the upper end of each rack is fixedly connected with a feeding slide way, and the upper end of each feeding slide way is fixedly connected with a cutting device. The feeding slide way and the discharging slide way are fixedly connected with a fixing frame in a key mode, the position, close to the fixing frame, of the feeding slide way is rotationally connected with a pair of conveying idler wheels, one side of the feeding slide way is fixedly connected with a first motor, and the lower end between the feeding slide way and the discharging slide way is fixedly connected with a knife sharpening mechanism. The knife sharpening mechanism is arranged below the blade, the second motor drives the lead screw to rotate, the lead screw drives the movable table to move, when the blade cuts downwards, the movable table drives the knife sharpening sliding block to move, and the knife sharpening rod on the knife sharpening sliding block polishes the blade, so that the blade is always in a sharp state.

Description

Technical Field

[0001] This utility model belongs to the field of plastic packaging bag processing technology, specifically relating to a cutting device for processing plastic packaging bags. Background Technology

[0002] Plastic packaging bags are bags made of plastic materials and are widely used for packaging and storing various goods or items. They are lightweight, durable, highly malleable, and moisture-proof, making them widely used in food, daily necessities, clothing, electronics, and many other industries. In the processing of plastic packaging bags, the cutting device is a crucial component, primarily used to cut the plastic film into the required size and shape. Nowadays, most cutting methods utilize cold-cutting blades, where a sharp blade cuts the plastic packaging bag at room temperature. The blade is typically mounted on a blade holder, and pressure forces the blade into the plastic material to complete the cut.

[0003] However, existing cutting devices require blade replacement after prolonged use, which is time-consuming and significantly reduces production efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a cutting device for processing plastic packaging bags.

[0005] The technical solution adopted to solve the above technical problems is: a cutting device for processing plastic packaging bags, including several frames, a feeding slide is fixedly connected to the upper end of the frame, a feeding slide is fixedly connected to the upper end of the frame, a fixed frame is fixedly connected to the feeding slide and the feeding slide, a pair of conveying rollers are rotatably connected to the feeding slide near the fixed frame, a first motor is fixedly connected to one side of the feeding slide, and a grinding mechanism is fixedly connected at the lower end between the feeding slide and the feeding slide.

[0006] The above technical solution allows for the sharpening of blades using a grinding mechanism, eliminating the need to replace blades and improving processing efficiency.

[0007] Furthermore, the output end of the first motor is fixedly connected to the conveying roller, and pneumatic rods are fixedly connected to both sides of the fixed frame, with blades fixedly connected to the output end of the pneumatic rods.

[0008] The above technical solution allows for cutting by using a pneumatic rod to move the blade up and down.

[0009] Furthermore, a fixing plate is fixedly connected to both sides of the blade, and a plurality of first sliding rods are slidably connected through the fixing plate. A first spring is sleeved on the first sliding rod, and a pressure plate is fixedly connected to the lower end of the first sliding rod. The lower surface of the pressure plate is provided with anti-slip texture.

[0010] The above technical solution can prevent plastic packaging bags from shifting during cutting, thus improving cutting accuracy.

[0011] Furthermore, the grinding mechanism includes a second motor fixedly connected to one side of the feeding slide, a lead screw fixedly connected to the output end of the second motor, second slide rods provided on both sides of the lead screw, and a movable table slidably connected through the second slide rods.

[0012] The above technical solution allows the second motor to drive the lead screw to rotate, which in turn drives the moving table to move, thereby enabling comprehensive grinding of the blade edge.

[0013] Furthermore, the lead screw is threaded through and connected to the movable platform, a pair of third slide rods are fixedly connected to the movable platform, and a second spring is fixedly connected to the movable platform.

[0014] The above technical solution allows the second spring to push the sharpening slider, ensuring that the sharpening rod remains in close contact with the blade.

[0015] Furthermore, a sharpening slider is slidably connected through the third slide rod, and the upper end of the second spring is fixedly connected to the sharpening slider.

[0016] The above technical solution allows the moving table to drive the sharpening slider to move, and the sharpening rod on the sharpening slider to sharpen the blade, keeping the blade always sharp.

[0017] Furthermore, a pair of sharpening rods are fixedly connected to the sharpening slider, and the angle between the sharpening rods is consistent with the angle of the blade edge.

[0018] The above technical solutions can improve the accuracy of sharpening and maintain the sharpness of the blade edge.

[0019] Furthermore, a cleaning sponge is fixedly connected between the loading chute and the unloading chute, and baffles are provided on both sides of the loading chute and the unloading chute.

[0020] The above technical solution can clean the blade and prevent debris generated during grinding from moving upwards and contaminating the plastic bag.

[0021] The beneficial effects of this utility model are as follows: This utility model sets a sharpening mechanism below the blade, and drives the lead screw to rotate through the second motor. The lead screw drives the moving table to move. When the blade cuts downward, the moving table drives the sharpening slider to move. The sharpening rod on the sharpening slider sharpens the blade, so that the blade is always in a sharp state. At the same time, the blade is cleaned by a sponge to prevent the debris generated during sharpening from moving upward and contaminating the plastic bag. Attached Figure Description

[0022] Figure 1 This is a first-view perspective perspective view of this utility model;

[0023] Figure 2 This is a second-view perspective perspective view of this utility model;

[0024] Figure 3 This is a partial sectional view of the present invention;

[0025] Figure 4 This is a structural diagram of the grinding slider of this utility model.

[0026] Reference numerals in the attached diagram: 1. Frame; 2. Feeding chute; 3. Discharging chute; 4. First motor; 5. Conveyor roller; 6. Fixed frame; 7. Pneumatic rod; 8. Blade; 9. Fixed plate; 10. First slide bar; 11. First spring; 12. Pressure plate; 13. Second motor; 14. Lead screw; 15. Second slide bar; 16. Moving table; 17. Third slide bar; 18. Second spring; 19. Sharpening slider; 20. Sharpening rod; 21. Cleaning sponge. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] like Figures 1-4 As shown in this embodiment, a cutting device for processing plastic packaging bags includes several frames 1. A feeding slide 3 is fixedly connected to the upper end of the frame 1, and a feeding slide 2 is fixedly connected to the upper end of the frame 1. A fixed frame 6 is fixedly connected to the feeding slide 2 and the feeding slide 3. A pair of conveying rollers 5 are rotatably connected to the feeding slide 2 near the fixed frame 6. A first motor 4 is fixedly connected to one side of the feeding slide 2. A grinding mechanism is fixedly connected to the lower end between the feeding slide 2 and the feeding slide 3. The first motor 4 drives the conveying rollers 5 to rotate, feeding the plastic packaging bag through the feeding slide 2 onto the feeding slide 3. At the same time, the pneumatic rod 7 drives the blade 8 to move up and down reciprocally to cut the bag.

[0029] Both sides of the blade 8 are fixedly connected to a fixing plate 9. Several first slide rods 10 are slidably connected through the fixing plate 9. A first spring 11 is sleeved on the first slide rod 10. A pressure plate 12 is fixedly connected to the lower end of the first slide rod 10. The lower surface of the pressure plate 12 is provided with anti-slip texture. The lead screw 14 is threadedly connected to the moving table 16. A pair of third slide rods 17 are fixedly connected to the moving table 16. A second spring 18 is fixedly connected to the moving table 16. The blade 8 drives the pressure plate 12 to move down through the fixing plate 9. The first spring 11 pushes the pressure plate 12 to squeeze and fix the plastic packaging bag, ensuring the accuracy of cutting.

[0030] A pair of sharpening rods 20 are fixedly connected to the sharpening slider 19. The angle between the sharpening rods 20 is the same as the angle of the cutting edge of the blade 8. The output end of the first motor 4 is fixedly connected to the conveying roller 5. Pneumatic rods 7 are fixedly connected to both sides of the fixed frame 6. The output end of the pneumatic rods 7 is fixedly connected to the blade 8. The sharpening mechanism includes a second motor 13 fixedly connected to one side of the feeding slide 2. The output end of the second motor 13 is fixedly connected to a lead screw 14. Second slide rods 15 are provided on both sides of the lead screw 14. A moving table 16 is slidably connected through the second slide rod 15. When the blade 8 descends to the bottom of the feeding slide 2, the second spring 18 pushes the sharpening slider 19 so that the sharpening rods 20 on the sharpening slider 19 can always be in close contact with the blade. At this time, the second motor 13 drives the lead screw 14 to rotate. The lead screw 14 drives the moving table 16 to move along the second slide rod 15, so that the sharpening rods 20 move along the cutting edge of the blade 8 to sharpen the blade and keep the blade 8 in a sharp state.

[0031] A sharpening slider 19 is slidably connected through the third slide rod 17. The upper end of the second spring 18 is fixedly connected to the sharpening slider 19. A cleaning sponge 21 is fixedly connected between the feeding slide 2 and the unloading slide 3. Baffles are provided on both sides of the feeding slide 2 and the unloading slide 3. The blade 8 moves upward and cleans the debris through the cleaning sponge 21.

[0032] The working principle of this embodiment is as follows: The first motor 4 drives the conveyor roller 5 to rotate, feeding the plastic packaging bag into the unloading slide 3 through the feeding slide 2. At the same time, the pneumatic rod 7 drives the blade 8 to move up and down reciprocally for cutting. During cutting, the blade 8 drives the pressure plate 12 to move down through the fixing plate 9. The first spring 11 pushes the pressure plate 12 to squeeze and fix the plastic packaging bag, ensuring the accuracy of the cut. Then, when the blade 8 descends to the bottom of the feeding slide 2, the second spring 18 pushes the sharpening slider 19, so that the sharpening rod 20 on the sharpening slider 19 can always be in close contact with the blade. At this time, the second motor 13 drives the lead screw 14 to rotate. The lead screw 14 drives the moving table 16 to move along the second slide rod 15, so that the sharpening rod 20 moves along the blade edge of the blade 8 to sharpen the blade, keeping the blade 8 always in a sharp state. Then the blade 8 moves up and the cleaning sponge 21 wipes away the debris to avoid contaminating the plastic packaging bag.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A cutting device for processing plastic packaging bags, comprising a plurality of racks (1), characterized in that: The upper end of the rack (1) is fixedly connected with a discharging chute (3), the upper end of the rack (1) is fixedly connected with a feeding chute (2), the feeding chute (2) and the discharging chute (3) are fixedly connected with a fixed frame (6), a pair of conveying rollers (5) are rotatably connected to the position of the feeding chute (2) close to the fixed frame (6), a first motor (4) is fixedly connected to one side of the feeding chute (2), and a knife sharpening mechanism is fixedly connected between the lower ends of the feeding chute (2) and the discharging chute (3); The knife sharpening mechanism comprises a second motor (13) fixedly connected to one side of the feeding chute (2), a lead screw (14) fixedly connected to the output end of the second motor (13), second sliding rods (15) arranged on both sides of the lead screw (14), and a moving table (16) slidably connected to the second sliding rods (15); The lead screw (14) is threadedly connected to the moving table (16), a pair of third sliding rods (17) are fixedly connected to the moving table (16), and a second spring (18) is fixedly connected to the moving table (16); A knife sharpening sliding block (19) is slidably connected to the third sliding rods (17), and the upper end of the second spring (18) is fixedly connected to the knife sharpening sliding block (19); A pair of knife sharpening rods (20) are fixedly connected to the knife sharpening sliding block (19), and the angle between the knife sharpening rods (20) is consistent with the angle of the blade (8).

2. The cutting apparatus for processing plastic packaging bags according to claim 1, characterized in that, The output end of the first motor (4) is fixedly connected to the conveying roller (5), the fixed frame (6) is fixedly connected with pneumatic rods (7) on both sides, and the output end of the pneumatic rod (7) is fixedly connected with a blade (8).

3. The cutting apparatus for processing plastic packaging bags according to claim 2, wherein Fixed plates (9) are fixedly connected to both sides of the blade (8), a plurality of first sliding rods (10) are slidably connected in the fixed plates (9), first springs (11) are arranged on the first sliding rods (10), pressing plates (12) are fixedly connected to the lower ends of the first sliding rods (10), and anti-skid patterns are arranged on the lower surfaces of the pressing plates (12).

4. The cutting apparatus for processing plastic packaging bags according to claim 1, characterized in that, Cleaning sponges (21) are fixedly connected between the feeding chute (2) and the discharging chute (3), and baffles are arranged on both sides of the feeding chute (2) and the discharging chute (3).

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