Cutting machine for plastic bag production

Abstract

The utility model discloses a cutting machine for plastic bag production, which comprises an operating platform, a winding machine and an unwinding machine are respectively arranged on two sides of the top of the operating platform, an L-shaped fixing frame is fixed on the rear side of the center of the top of the operating platform, an air cylinder is fixed on the top of the L-shaped fixing frame in a penetrating manner, and a mounting plate is fixed at the lower end of the air cylinder. According to the cutting machine for plastic bag production, a pull handle is pulled upwards, the pull handle can drive a pressing roller to move upwards, a second spring is further compressed, the pull handle is loosened, and under the elastic force effect of the second spring, the pressing roller can be driven to move upwards, so that the pressing roller can be driven to move upwards, and the plastic bag can be cut off. According to the plastic bag pressing device, the pressing rollers move downwards to press the plastic bags, it is guaranteed that the plastic bags can be flattened in the moving process, cutting of the plastic bags is facilitated, and meanwhile the plastic bags with different thicknesses can be flattened.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag production technology, specifically a cutting machine for plastic bag production. Background Technology

[0002] During the production of plastic bags, the rolls of plastic bags need to be cut, thus requiring the use of a plastic bag cutting machine. Currently available plastic bag cutting machines do not secure the cutting section during the cutting process, causing the plastic bags to easily move, resulting in poor cut quality and making it inconvenient to flatten plastic bags of different thicknesses, thus affecting work efficiency.

[0003] To address the aforementioned issues, there is an urgent need for innovative designs based on existing cutting machines used in plastic bag production. Utility Model Content

[0004] The purpose of this invention is to provide a cutting machine for producing plastic bags, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cutting machine for producing plastic bags, comprising an operating table, with a winding machine and an unwinding machine respectively arranged on both sides of the top of the operating table, an L-shaped fixing frame fixed to the rear side of the center of the top of the operating table, a cylinder fixed through the top of the L-shaped fixing frame, an mounting plate fixed to the lower end of the cylinder, a hollow rectangular cutting blade fixed to the bottom of the mounting plate, an outer cylinder fixed inside the hollow rectangular cutting blade at the bottom of the mounting plate, a first spring fixed to the top of the outer cylinder, an inner cylinder fixed to the lower end of the first spring, a pressing plate fixed to the lower end of the inner cylinder through the interior of the outer cylinder, and the outer cylinder and the inner cylinder being slidably connected, and a hollow rectangular blade groove opened directly below the hollow rectangular cutting blade on the top of the operating table.

[0006] Preferably, a fixing plate is fixed to both the front and rear sides of the top of the operating table. A groove is provided on one side of the fixing plate, and a movable block is slidably installed inside the groove. A rotating shaft is rotatably installed on one side of the movable block via a bearing. A pressure roller is fixed to the outside of the rotating shaft. The bottom plate of the pressure roller abuts against the top of the operating table. A movable rod is fixed to the top of the movable block. A pull plate is fixed through the top of the fixing plate at the top of the movable rod, and the movable rod is slidably connected to the fixing plate. A second spring is nested on the outside of the movable rod. The top and bottom of the second spring are respectively connected to the top of the groove and the top of the movable block.

[0007] Preferably, a handle is fixed at the center of the top of the pull plate.

[0008] Preferably, the outer cylinder, the first spring, and the inner cylinder are all symmetrically distributed about the central axis of the pressure plate.

[0009] Preferably, guide rods are fixed on both sides of the top of the mounting plate, the upper end of the guide rods penetrates through the top of the L-shaped fixing frame, and the guide rods are slidably connected to the L-shaped fixing frame.

[0010] Preferably, the outer side of the clamping plate is in contact with the inner side of the hollow rectangular cutting blade.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the cutting machine for producing plastic bags can move the pressure roller upward by pulling the handle upward, so that the second spring is further compressed. When the handle is released, the pressure roller moves downward under the elastic force of the second spring to press the plastic bag, ensuring that the plastic bag can be flattened during the movement, which is beneficial to the cutting of the plastic bag. At the same time, it can flatten plastic bags of different thicknesses.

[0012] By activating the cylinder, the hollow rectangular cutting blade and the pressure plate can move downwards simultaneously. The pressure plate contacts the plastic bag first, and pushes the inner cylinder to move inwards towards the outer cylinder, further compressing the first spring. The elastic force generated by the first spring fixes the plastic bag in place, ensuring that the plastic bag will not move during the cutting process and improving the quality of plastic bag cutting. Attached Figure Description

[0013] Figure 1 This is a frontal cross-sectional view of the present invention.

[0014] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0015] Figure 3 This is a side view sectional structural diagram of the present invention;

[0016] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B;

[0017] Figure 5 This is a top view sectional view of the installation structure of the clamping plate of this utility model.

[0018] In the diagram: 1. Control panel; 2. Winding machine; 3. Unwinding machine; 4. L-shaped fixing frame; 5. Cylinder; 6. Mounting plate; 7. Guide rod; 8. Hollow rectangular cutting blade; 9. Outer cylinder; 10. First spring; 11. Inner cylinder; 12. Pressure plate; 13. Fixing plate; 14. Groove; 15. Movable block; 16. Rotating shaft; 17. Pressure roller; 18. Movable rod; 19. Second spring; 20. Pull plate; 21. Handle; 22. Hollow rectangular blade groove. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-5 This utility model provides a technical solution: a cutting machine for producing plastic bags, including an operating table 1. A winding machine 2 and an unwinding machine 3 are respectively arranged on both sides of the top of the operating table 1. An L-shaped fixing frame 4 is fixed to the rear side of the center of the top of the operating table 1. A cylinder 5 is fixed through the top of the L-shaped fixing frame 4. An mounting plate 6 is fixed to the lower end of the cylinder 5. A hollow rectangular cutting blade 8 is fixed to the bottom of the mounting plate 6. An outer cylinder 9 is fixed inside the hollow rectangular cutting blade 8 at the bottom of the mounting plate 6. A first spring 10 is fixed to the top inside the outer cylinder 9. An inner cylinder 11 is fixed to the lower end of the first spring 10. A pressing plate 12 is fixed through the lower end of the inner cylinder 11 inside the outer cylinder 9. The outer cylinder 9 and the inner cylinder 11 are slidably connected. A hollow rectangular blade groove 22 is opened on the top of the operating table 1 directly below the hollow rectangular cutting blade 8.

[0021] Fixed plates 13 are fixed on the front and rear sides of the top of the operating table 1. A groove 14 is provided on one side of the fixed plate 13. A movable block 15 is slidably installed inside the groove 14. A rotating shaft 16 is rotatably installed on one side of the movable block 15 through a bearing. A pressure roller 17 is fixed on the outside of the rotating shaft 16. The bottom plate of the pressure roller 17 abuts against the top of the operating table 1. A movable rod 18 is fixed on the top of the movable block 15. A pull plate 20 is fixed through the top of the fixed plate 13 and the movable rod 18 is slidably connected to the fixed plate 13. A second spring 19 is nested on the outside of the movable rod 18. The top and bottom of the second spring 19 are respectively connected to the top of the groove 14 and the top of the movable block 15.

[0022] A handle 21 is fixed at the center of the top of the pull plate 20, which makes it easy to pull the pull plate 20 upward by pulling it.

[0023] The outer cylinder 9, the first spring 10, and the inner cylinder 11 are all symmetrically distributed about the central axis of the pressure plate 12, ensuring the balance of force on the pressure plate 12.

[0024] Guide rods 7 are fixed on both sides of the top of the mounting plate 6. The upper end of the guide rod 7 passes through the top of the L-shaped fixing frame 4, and the guide rod 7 is slidably connected to the L-shaped fixing frame 4. The design of the two guide rods 7 ensures that the mounting plate 6 and the hollow rectangular cutting blade 8 can be raised and lowered stably.

[0025] The outer side of the clamping plate 12 fits against the inner side of the hollow rectangular cutter 8, ensuring that the clamping plate 12 can enter the interior of the hollow rectangular cutter 8.

[0026] The first spring 10 and the second spring 19 are springs with a high elastic coefficient, which allows the plastic bag to be fixed in place.

[0027] Working principle: When using the plastic bag production cutting machine, firstly, the plastic bag roll is installed on the unwinding machine 3, and then one end of the plastic bag roll is passed through the bottom of the pressure roller 17 and installed on the rewinding machine 2. The above operation is existing technology and will not be described in detail here.

[0028] When flattening plastic bags of different thicknesses, pulling the handle 21 upwards causes the pull plate 20, movable rod 18, movable block 15, rotating shaft 16, and pressure roller 17 to move upwards simultaneously, further compressing the second spring 19. Figure 4 The second spring 19 is in a compressed state. Then, the plastic bag is passed through the bottom of the pressure roller 17. The handle 21 is released. Under the elastic force of the second spring 19, the pressure roller 17 moves downward to press the plastic bag, ensuring that the plastic bag can be flattened during the movement, which is beneficial for cutting the plastic bag.

[0029] When cylinder 5 is activated, it drives the mounting plate 6, guide rod 7, hollow rectangular cutter 8, outer cylinder 9, first spring 10, inner cylinder 11, and pressing plate 12 to move downwards simultaneously. Pressing plate 12 contacts the plastic bag first, and then pushes the inner cylinder 11 into the inner part of the outer cylinder 9, further compressing the first spring 10. Figure 1 The first spring 10 is in a compressed state. The elastic force generated by the first spring 10 fixes the plastic bag, ensuring that the plastic bag will not move during the cutting process, thus improving the cutting quality of the plastic bag. The hollow rectangular cutting blade 8 continues to move downward to complete the cutting of the plastic bag.

[0030] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A cutting machine for producing plastic bags, comprising an operating table (1), characterized in that: A winding machine (2) and an unwinding machine (3) are respectively installed on both sides of the top of the operating table (1). An L-shaped fixing frame (4) is fixed at the rear side of the center of the top of the operating table (1). A cylinder (5) is fixed through the top of the L-shaped fixing frame (4). A mounting plate (6) is fixed at the lower end of the cylinder (5). A hollow rectangular cutting blade (8) is fixed at the bottom of the mounting plate (6). An outer cylinder (9) is fixed inside the hollow rectangular cutting blade (8) at the bottom of the mounting plate (6). A first spring (10) is fixed at the top inside the outer cylinder (9). An inner cylinder (11) is fixed at the lower end of the first spring (10). A pressing plate (12) is fixed through the lower end of the inner cylinder (11) inside the outer cylinder (9). The outer cylinder (9) and the inner cylinder (11) are slidably connected. A hollow rectangular blade groove (22) is opened at the top of the operating table (1) directly below the hollow rectangular cutting blade (8).

2. The cutting machine for producing plastic bags according to claim 1, characterized in that: The front and rear sides of the top of the operating table (1) are fixed with a fixed plate (13). A groove (14) is provided on one side of the fixed plate (13). A movable block (15) is slidably installed inside the groove (14). A rotating shaft (16) is rotatably installed on one side of the movable block (15) through a bearing. A pressure roller (17) is fixed on the outside of the rotating shaft (16). The bottom plate of the pressure roller (17) abuts against the top of the operating table (1). A movable rod (18) is fixed on the top of the movable block (15). A pull plate (20) is fixed through the top of the fixed plate (13) at the top of the movable rod (18). The movable rod (18) is slidably connected to the fixed plate (13). A second spring (19) is nested on the outside of the movable rod (18). The top and bottom of the second spring (19) are respectively connected to the top of the groove (14) and the top of the movable block (15).

3. A cutting machine for producing plastic bags according to claim 2, characterized in that: A handle (21) is fixed at the center of the top of the pull plate (20).

4. A cutting machine for producing plastic bags according to claim 1, characterized in that: The outer cylinder (9), the first spring (10), and the inner cylinder (11) are all symmetrically distributed about the central axis of the pressure plate (12).

5. A cutting machine for producing plastic bags according to claim 1, characterized in that: Guide rods (7) are fixed on both sides of the top of the mounting plate (6). The upper end of the guide rod (7) passes through the top of the L-shaped fixing frame (4), and the guide rod (7) is slidably connected to the L-shaped fixing frame (4).

6. A cutting machine for producing plastic bags according to claim 1, characterized in that: The outer side of the clamping plate (12) is in contact with the inner side of the hollow rectangular cutter (8).

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