Limiting device for production and processing of plastic packaging bags

Abstract

The utility model discloses a plastic packaging bag producing and processing limiting device, which belongs to the technical field of plastic packaging bag processing, and comprises a rack, two sides of the rack are fixedly connected with limiting mechanisms, the rack is fixedly connected with a fixing frame, a belt is arranged in the fixing frame, and the belt is fixedly connected with the limiting mechanisms. A motor is fixedly connected to one side of the fixing frame and drives the belt to rotate. The hydraulic rod drives the rotating block to rotate, the rotating block drives the first lifting rod and the second lifting rod to move relatively through the first connecting rod and the second connecting rod, so that the moving plate gets close to the middle, a plastic packaging bag is clamped through the first clamping block firstly, then the first clamping block continues to move along with the moving plate, and the first clamping block moves towards the two sides; therefore, the plastic packaging bag is opened towards the two sides, and the surface, needing to be printed, of the plastic packaging bag is smooth.

Description

Technical Field

[0001] This utility model belongs to the field of plastic packaging bag processing technology, specifically relating to a limiting device for the production and processing of 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 various industries such as food, daily necessities, clothing, and electronics. During the production of plastic packaging bags, printing is required, and limiting devices are needed during this process to ensure smooth and efficient production and that the final product meets quality requirements.

[0003] Existing limiting devices cannot stretch and tighten plastic packaging bags during the printing process, which can easily lead to wrinkles and misprints, thus reducing the yield rate. 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 limiting device for the production and processing of plastic packaging bags.

[0005] The technical solution adopted to solve the above technical problems is: a limiting device for the production and processing of plastic packaging bags, including a frame, with limiting mechanisms fixedly connected to both sides of the frame, a fixed frame fixedly connected to the frame, a belt installed inside the fixed frame, and a motor fixedly connected to one side of the fixed frame, the motor driving the belt to rotate.

[0006] The above technical solution uses a hydraulic rod to drive a rotating block to rotate. The rotating block, through a first connecting rod and a second connecting rod, drives a first lifting rod and a second lifting rod to move relative to each other, thereby causing the moving plate to move towards the center. First, the plastic packaging bag is clamped by the first clamping block. Then, as the moving plate continues to move, the first clamping block moves to both sides, thereby opening the plastic packaging bag to both sides and clamping and fixing it by the second clamping block. This makes the surface of the plastic packaging bag to be printed flat, greatly improving the printing yield.

[0007] Furthermore, the limiting mechanism includes a base, on which a fixing plate is fixedly connected, and on one side of the base, a rotating frame is rotatably connected.

[0008] The above technical solution allows the hydraulic rod to rotate, preventing it from jamming due to limit switches during extension and retraction.

[0009] Furthermore, a hydraulic rod is fixedly connected inside the rotating frame, and a rotating block is rotatably connected to the fixed plate, with the lower end of the rotating block rotatably connected to the hydraulic rod.

[0010] The above technical solution allows the rotating block on the fixed plate to rotate by extending and retracting the hydraulic rod.

[0011] Furthermore, one end of the rotating block is rotatably connected to a first connecting rod, and the end of the rotating block away from the first connecting rod is rotatably connected to a second connecting rod.

[0012] The above technical solution allows the first and second connecting rods to move by rotating the rotating block. Since the first and second connecting rods are located at opposite ends of the rotating block, their directions of movement are opposite.

[0013] Furthermore, the end of the first connecting rod away from the rotating block is rotatably connected to a first lifting rod, and the end of the second connecting rod away from the rotating block is rotatably connected to a second lifting rod.

[0014] With the above technical solution, the first lifting rod can be moved by the first connecting rod, and the second lifting rod can be moved by the second connecting rod. Since the first connecting rod and the second connecting rod move in opposite directions, the first lifting rod and the second lifting rod also move in opposite directions.

[0015] Furthermore, the first lifting rod passes through the sliding connection base, the second lifting rod passes through the sliding connection base, and a movable plate is fixedly connected to the upper end of both the first and second lifting rods.

[0016] With the above technical solution, since the first lifting rod and the second lifting rod move in opposite directions, the moving plate can move relative to each other to clamp the plastic packaging bag. At the same time, the base limits the first lifting rod and the second lifting rod, so that the first lifting rod and the second lifting rod can only move up and down, avoiding deviation.

[0017] Furthermore, a pair of third connecting rods are rotatably connected to both sides of the movable plate, and a first clamping block is rotatably connected to the end of the third connecting rod away from the movable plate. A tension spring is fixedly connected between the first clamping blocks, and a second clamping block is fixedly connected to the movable plate.

[0018] With the above technical solution, when the moving plate approaches, the first clamping block first clamps the plastic packaging bag. Then, as the moving plate continues to move, the first clamping block moves to both sides, thereby opening the plastic packaging bag to both sides and clamping and fixing it with the second clamping block, so that the surface of the plastic packaging bag to be printed is flat. With the setting of the tension spring, when the moving plate moves away from the plastic packaging bag, the second clamping block separates first, and then the first clamping block moves inward. The tension spring pulls the first clamping block to reset, thus facilitating the next clamping.

[0019] Furthermore, the surface of the first clamping block is provided with anti-slip texture, and both the first and second clamping blocks are made of silicone.

[0020] The above technical solution can greatly improve the friction of the first clamping block, preventing the plastic packaging bag from sliding. At the same time, the first and second clamping blocks made of silicone can prevent damage to the plastic packaging bag.

[0021] The beneficial effects of this utility model are as follows: This utility model uses a hydraulic rod to drive a rotating block to rotate. The rotating block drives a first lifting rod and a second lifting rod to move relative to each other through a first connecting rod and a second connecting rod, thereby causing the moving plate to move closer to the center. First, the plastic packaging bag is clamped by the first clamping block. Then, as the moving plate continues to move, the first clamping block moves to both sides, thereby opening the plastic packaging bag to both sides and clamping and fixing it by the second clamping block. This makes the surface of the plastic packaging bag that needs to be printed flat, greatly improving the printing yield. 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 structural diagram of the clamping mechanism of this utility model.

[0025] Reference numerals: 1. Frame; 2. Fixing frame; 3. Motor; 4. Belt; 5. Base; 6. Fixing plate; 7. Rotating block; 8. Rotating frame; 9. Hydraulic rod; 10. First connecting rod; 11. Second connecting rod; 12. First lifting rod; 13. Second lifting rod; 14. Moving plate; 15. Third connecting rod; 16. First clamping block; 17. Tension spring; 18. Second clamping block. Detailed Implementation

[0026] 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.

[0027] like Figures 1-3 As shown, a limiting device for the production and processing of plastic packaging bags in this embodiment includes a frame 1, with limiting mechanisms fixedly connected to both sides of the frame 1. A fixed frame 2 is fixedly connected to the frame 1, and a belt 4 is provided inside the fixed frame 2. A motor 3 is fixedly connected to one side of the fixed frame 2. The motor 3 drives the belt 4 to rotate, and the belt 4 drives the plastic packaging bag to move.

[0028] A hydraulic rod 9 is fixedly connected inside the rotating frame 8. A rotating block 7 is rotatably connected to the fixed plate 6. The lower end of the rotating block 7 is rotatably connected to the hydraulic rod 9. The end of the first connecting rod 10 away from the rotating block 7 is rotatably connected to the first lifting rod 12. The end of the second connecting rod 11 away from the rotating block 7 is rotatably connected to the second lifting rod 13. When the hydraulic rod 9 shortens, it causes the rotating block 7 to rotate counterclockwise. At this time, the rotating block 7 causes the first connecting rod 10 to descend and the second connecting rod 11 to rise, thereby causing the first lifting rod 12 to descend and the second lifting rod 13 to rise.

[0029] A pair of third connecting rods 15 are rotatably connected to both sides of the movable plate 14. The end of the third connecting rod 15 away from the movable plate 14 is rotatably connected to a first clamping block 16. A tension spring 17 is fixedly connected between the first clamping blocks 16. A second clamping block 18 is fixedly connected to the movable plate 14. The movable plate 14 drives the first clamping block 16 to move. When the first clamping block 16 clamps the plastic packaging bag, it moves to both sides as the movable plate 14 moves, thereby stretching and tightening the packaging bag until the second clamping block 18 clamps and fixes the plastic packaging bag, thus facilitating printing.

[0030] The limiting mechanism includes a base 5, a fixed plate 6 fixedly connected to the base 5, a rotating frame 8 rotatably connected to one side of the base 5, a first connecting rod 10 rotatably connected to one end of a rotating block 7, a second connecting rod 11 rotatably connected to the end of the rotating block 7 away from the first connecting rod 10, a first lifting rod 12 slidably connected to the base 5, a second lifting rod 13 slidably connected to the base 5, a moving plate 14 fixedly connected to the upper end of both the first lifting rod 12 and the second lifting rod 13, a first clamping block 16 with anti-slip texture on its surface, and both the first clamping block 16 and the second clamping block 18 are made of silicone. The first lifting rod 12 and the second lifting rod 13 drive the moving plate 14 to move towards the center, and the moving plate 14 drives the first clamping block 16 to move. With the setting of the tension spring 17, when the moving plate 14 moves away from the plastic packaging bag, the second clamping block 18 is first separated, and then the first clamping block 16 moves inward. The tension spring 17 pulls the first clamping block 16 to reset, thus facilitating the next clamping.

[0031] The working principle of this embodiment is as follows: Motor 3 drives belt 4 to rotate, belt 4 moves the plastic packaging bag, and then hydraulic rod 9 shortens, causing rotating block 7 to rotate counterclockwise. At this time, rotating block 7 drives first connecting rod 10 to descend and second connecting rod 11 to rise, thereby causing first lifting rod 12 to descend and second lifting rod 13 to rise. First lifting rod 12 and second lifting rod 13 drive moving plate 14 to move towards the middle. Moving plate 14 drives first clamping block 16 to move. After first clamping block 16 clamps the plastic packaging bag, it moves to both sides with the drive of moving plate 14, thereby stretching and tightening the packaging bag until second clamping block 18 clamps and fixes the plastic packaging bag, thus facilitating printing.

[0032] 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 plastic packaging bag production and processing limiting device, comprising a rack (1), characterized in that: Both sides of the rack (1) are fixedly connected with limiting mechanisms, the rack (1) is fixedly connected with a fixed frame (2), the fixed frame (2) is provided with a belt (4), one side of the fixed frame (2) is fixedly connected with a motor (3), the motor (3) drives the belt (4) to rotate; The limiting mechanism comprises a base (5), the base (5) is fixedly connected with a fixed plate (6), one side of the base (5) is rotatably connected with a rotating frame (8); The rotating frame (8) is fixedly connected with a hydraulic rod (9), the fixed plate (6) is rotatably connected with a rotating block (7), the lower end of the rotating block (7) is rotatably connected with the hydraulic rod (9); One end of the rotating block (7) is rotatably connected with a first connecting rod (10), the end of the rotating block (7) away from the first connecting rod (10) is rotatably connected with a second connecting rod (11); The end of the first connecting rod (10) away from the rotating block (7) is rotatably connected with a first lifting rod (12), the end of the second connecting rod (11) away from the rotating block (7) is rotatably connected with a second lifting rod (13).

2. The limiting device for processing plastic packaging bag according to claim 1, characterized in that, The first lifting rod (12) penetrates through the base (5) and is slidably connected with the base (5), the second lifting rod (13) penetrates through the base (5) and is slidably connected with the base (5), the upper ends of the first lifting rod (12) and the second lifting rod (13) are fixedly connected with a moving plate (14).

3. The limiting device for processing plastic packaging bag according to claim 2, characterized in that, Both sides of the moving plate (14) are rotatably connected with a pair of third connecting rods (15), the ends of the third connecting rods (15) away from the moving plate (14) are rotatably connected with first clamping blocks (16), the first clamping blocks (16) are fixedly connected with a tension spring (17), the moving plate (14) is fixedly connected with second clamping blocks (18).

4. The limiting device for processing plastic packaging bag according to claim 3, characterized in that, The surface of the first clamping block (16) is provided with anti-skid lines, the first clamping block (16) and the second clamping block (18) are made of silica gel.

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