Plastic bag notching device

Abstract

The utility model relates to the technical field of plastic bag processing, and particularly discloses a plastic bag notching device which comprises a supporting mechanism, the supporting mechanism comprises a frame body, a working table is fixed at the upper end of the frame body, a beam frame is arranged on the working table, and a notching mechanism used for punching a plastic bag is arranged on the supporting mechanism. The notching mechanism comprises a vertically-arranged hydraulic column, a mounting plate is fixed to the lower end of the hydraulic column, a guide column penetrates through the mounting plate, a pressing plate is fixed to the lower end of the guide column, a limiting plate is mounted at the upper end of the guide column, and a first spring is arranged on the outer diameter of the guide column and located between the mounting plate and the pressing plate. Through the arrangement of the notching mechanism, when a hydraulic column extends to push the mounting plate to move downwards as a whole, a pressing plate firstly makes contact with a plastic bag to press and fix the plastic bag, the mounting plate continues to move downwards, the pressing plate upwards compresses a first spring through a guide column, and a punching cutter carries out notching operation on the plastic bag; the stability of the plastic bag during notching is guaranteed, and the notching quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag processing, in particular to a plastic bag punching device. Background Technique

[0002] Plastic bags are bags made mainly of plastics and are essential items in people's daily lives. They are often used to hold other items and are widely used because of their advantages of low cost, extremely light weight, large capacity, and convenient storage. During their production process, a punching machine is needed to perform punching and cutting operations on them. There is a plastic bag punching device with the publication number CN 220332140 U. Through a driving component, a cutting knife is driven to move up and down through a connecting rod and a mounting block, so that the cutting knife contacts the chopping board, squeezes the plastic bag on the chopping board, and then can punch the plastic bag. By using the mounting groove opened on the mounting block, taking out the cutting knife from the mounting groove can facilitate the disassembly and replacement of the cutting knife, improving the convenience. However, when the above device punches a plastic bag, the bag may be displaced, thus affecting the quality of the punching. Content of the Utility Model

[0003] The purpose of the utility model is to provide a plastic bag punching device to solve the above problems.

[0004] The utility model realizes the above purpose through the following technical solutions:

[0005] A plastic bag punching device includes a support mechanism. The support mechanism includes a frame body. A workbench is fixed at the upper end of the frame body. A beam frame is arranged on the workbench. A punching mechanism for punching a plastic bag is arranged on the support mechanism. The punching mechanism includes a vertically arranged hydraulic cylinder. An installation plate is fixed at the lower end of the hydraulic cylinder. A guide post penetrates through the installation plate. A pressing plate is fixed at the lower end of the guide post. A limit plate is installed at the upper end of the guide post. A first spring is arranged between the outer diameter of the guide post and between the installation plate and the pressing plate. A punching knife is arranged at the lower end of the installation plate. A notch groove corresponding to the punching knife is opened on the pressing plate. A through hole corresponding to the punching knife is opened on the workbench. A support plate is arranged at the rear side of the through hole on the workbench. The rear end of the support plate is connected with a cylinder, and the cylinder is fixed at the rear side of the workbench.

[0006] Further setting: The punching knife is in a semi-circular ring shape. A push plate is arranged inside the punching knife. A sliding column passing through the installation plate is fixed at the upper end of the push plate. A second spring is sleeved on the outer diameter of the sliding column above the push plate.

[0007] Further setting: L-shaped positioning plates are oppositely arranged at the upper end of the workbench.

[0008] Further setting: The guide post is slidably connected with the installation plate, and the lower end surface of the pressing plate is flush with the lower end surface of the punching knife.

[0009] Further settings: The sliding column is slidably connected to the mounting plate, and the pushing plate is slidably connected to the punching knife.

[0010] Further settings: The support plate is slidably connected to the workbench, and a discharge plate is arranged at the corresponding position on the lower side of the workbench and corresponding to the through hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] Through the setting of the punching mechanism, when the hydraulic column extends to push the entire mounting plate to move downward, the pressing plate first contacts the plastic bag and presses and fixes the plastic bag. When the mounting plate continues to move downward, the pressing plate compresses the first spring upward through the guide post, and the punching knife performs a punching operation on the plastic bag, ensuring the stability of the plastic bag during punching and improving the punching quality. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is an axonometric view of a plastic bag punching device according to the present utility model;

[0015] Figure 2 is a schematic structural view of another perspective of a plastic bag punching device according to the present utility model;

[0016] Figure 3 is a schematic right-sectional view of a plastic bag punching device according to the present utility model;

[0017] Figure 4 is a schematic structural view of the punching mechanism of a plastic bag punching device according to the present utility model;

[0018] Figure 5 is a schematic partial structural view of a plastic bag punching device according to the present utility model.

[0019] The descriptions of the reference numerals are as follows:

[0020] 1. Support mechanism; 11. Frame body; 12. Workbench; 13. Beam frame; 14. L-shaped positioning plate; 21. Hydraulic column; 22. Mounting plate; 23. Guide post; 24. Pressing plate; 25. Limiting plate; 26. First spring; 27. Punching knife; 28. Sliding column; 29. Pushing plate; 210. Second spring; 31. Cylinder; 32. Support plate; 33. Discharge plate. Detailed Embodiments

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0023] The following further describes the present utility model with reference to the drawings:

[0024] As Figures 1 - 5 shown, a plastic bag punching device includes a support mechanism 1. The support mechanism 1 includes a frame body 11. A workbench 12 is fixed to the upper end of the frame body 11. A beam frame 13 is arranged on the workbench 12. L-shaped positioning plates 14 are oppositely arranged at the upper end of the workbench 12 for placing and limiting the plastic bag. A punching mechanism for punching the plastic bag is arranged on the support mechanism 1;

[0025] In this embodiment: The punching mechanism includes a vertically arranged hydraulic column 21. A mounting plate 22 is fixed to the lower end of the hydraulic column 21. A guide post 23 penetrates through the mounting plate 22. A pressing plate 24 is fixed to the lower end of the guide post 23. A limit plate 25 is installed at the upper end of the guide post 23. A first spring 26 is arranged on the outer diameter of the guide post 23 between the mounting plate 22 and the pressing plate 24. A punching cutter 27 is arranged at the lower end of the mounting plate 22. A notch groove corresponding to the punching cutter 27 is formed on the pressing plate 24. A through hole corresponding to the punching cutter 27 is formed on the workbench 12. A support plate 32 is arranged at the rear side of the through hole on the workbench 12. A cylinder 31 is connected to the rear end of the support plate 32. The cylinder 31 is fixed at the rear side of the workbench 12. By pushing the support plate 32 to move through the cylinder 31, the support plate 32 supports the plastic bag to be punched. A gap through which the punching cutter 27 passes is arranged between the support plate 32 and the workbench 12. The guide post 23 is slidably connected to the mounting plate 22. The lower end surface of the pressing plate 24 is flush with the lower end surface of the punching cutter 27. A sliding post 28 is slidably connected to the mounting plate 22. A pushing plate 29 is slidably connected to the punching cutter 27. By extending the hydraulic column 21 to push the mounting plate 22 to move downward as a whole, the pressing plate 24 first contacts the plastic bag. When the mounting plate 22 continues to move downward, the pressing plate 24 compresses the first spring 26 upward through the guide post 23 and presses the lower plastic bag tightly. Then, the punching cutter 27 performs a punching operation on the plastic bag, ensuring the stability of the plastic bag during punching.

[0026] In this embodiment: The punching cutter 27 is in a semi-circular shape. A pushing plate 29 is arranged inside the punching cutter 27. A sliding post 28 passing through the mounting plate 22 is fixed to the upper end of the pushing plate 29. A second spring 210 is sleeved on the outer diameter of the sliding post 28 above the pushing plate 29. A discharging plate 33 is arranged at the position corresponding to the through hole on the lower side of the workbench 12. The support plate 32 is slidably connected to the workbench 12. After punching, the cylinder 31 contracts to drive the support plate 32 to move backward. The hydraulic column 21 contracts to lift the mounting plate 22 upward. The second spring 210 pushes the pushing plate 29 to move downward, ejecting the punching waste stored in the punching cutter 27 and falling into the lower discharging plate 33 for discharging.

[0027] The working principle and usage process of the present utility model: Place the plastic bag on the workbench 12 and between the L-shaped positioning plates 14. By extending the hydraulic column 21 to push the mounting plate 22 to move downward as a whole, the pressing plate 24 first contacts the plastic bag. When the mounting plate 22 continues to move downward, the pressing plate 24 compresses the first spring 26 upward through the guide post 23 and presses the lower plastic bag tightly. Then, the punching cutter 27 performs a punching operation on the plastic bag. After punching, the cylinder 31 contracts to drive the support plate 32 to move backward. The hydraulic column 21 contracts to lift the mounting plate 22 upward. The second spring 210 pushes the pushing plate 29 to move downward, ejecting the punching waste stored in the punching cutter 27 and falling into the lower discharging plate 33.

[0028] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A plastic bag punching device, comprising a support mechanism (1), wherein the support mechanism (1) comprises a frame (11), a workbench (12) is fixed to the upper end of the frame (11), and a beam frame (13) is arranged on the workbench (12), characterized in that: The support mechanism (1) is provided with a punching mechanism for punching plastic bags, the punching mechanism comprising a vertically arranged hydraulic column (21), a mounting plate (22) being fixed at the lower end of the hydraulic column (21), a guide column (23) passing through the mounting plate (22), a holding plate (24) being fixed at the lower end of the guide column (23), a limiting plate (25) being installed at the upper end of the guide column (23), and an outer diameter of the guide column (23) being located between the mounting plate (22) and the holding plate (24). A first spring (26) is arranged between the mounting plate (22), a punching knife (27) is arranged at the lower end of the mounting plate (22), a notch groove corresponding to the punching knife (27) is provided on the holding plate (24), a through hole corresponding to the punching knife (27) is provided on the workbench (12), a support plate (32) is arranged on the workbench (12) at the rear side of the through hole, a cylinder (31) is connected to the rear end of the support plate (32), and the cylinder (31) is fixed to the rear side of the workbench (12).

2. A plastic bag punching device according to claim 1, characterized in that: The punching knife (27) is in a semi-ring shape. A push plate (29) is arranged inside the punching knife (27). A sliding column (28) passing through the mounting plate (22) is fixed to the upper end of the push plate (29). A second spring (210) is sleeved on the outer diameter of the sliding column (28) and located on the upper side of the push plate (29).

3. A plastic bag punching device according to claim 1, characterized in that: An L-shaped positioning plate (14) is arranged opposite to the upper end of the workbench (12).

4. A plastic bag punching device according to claim 1, characterized in that: The guide column (23) is slidably connected to the mounting plate (22), and the lower end surface of the holding plate (24) is flush with the lower end surface of the punching knife (27).

5. A plastic bag punching device according to claim 2, characterized in that: The sliding column (28) is slidably connected to the mounting plate (22), and the pushing plate (29) is slidably connected to the punching knife (27).

6. A plastic bag punching device according to claim 1, characterized in that: The support plate (32) is slidably connected to the workbench (12), and a discharge plate (33) is provided at a position corresponding to the through hole on the lower side of the workbench (12).

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