Cutter for cutting plastic film

Abstract

The utility model relates to the technical field of plastic film cutting tools, and discloses a plastic film cutting tool which comprises a machine shell, a film containing groove is transversely formed in the machine shell, a blade groove is formed above the film containing groove, and a T-shaped cutting knife is inserted into the blade groove. When a plastic film needs to be cut, the plastic film penetrates through a film containing groove, then a pressing rod is pressed downwards, in the downward moving process of the pressing rod, an L-shaped baffle and a pressing plate are firstly extruded through a second spring, the pressing plate is made to press and fix the plastic film needing to be cut, and at the same time, when the pressing rod moves downwards, a second tooth groove moves downwards to drive a special-shaped gear to rotate; the special-shaped gear rotates to drive the T-shaped cutting knife with the first tooth groove formed in the other side to move upwards, when the special-shaped gear rotates to the tooth-missing part to make contact with the first tooth groove, the T-shaped cutting knife rebounds downwards rapidly under extrusion of the first spring, and therefore the plastic film is cut through vertical vibration of the T-shaped cutting knife.

Description

Technical Field

[0001] This utility model relates to the field of plastic film cutting tools, specifically a cutting tool for cutting plastic film. Background Technology

[0002] Plastic film is a thin, flexible plastic product made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins. It is used for packaging and as a coating layer.

[0003] Plastic film needs to be cut using a cutting tool during use. Typically, a utility knife is used, but when cutting with a utility knife, the film slides from one end to the other. During this process, the film is torn by the blade, causing the cut to curl in a wavy shape, resulting in an uneven cut or a crooked cut. Therefore, those skilled in the art have provided a cutting tool for plastic film to solve the problems mentioned in the background. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cutting tool for plastic film, which solves the problem that when a utility knife is used for cutting, the film slides from one end to the other. During the sliding process of the blade, the film will curl in a wavy shape at the cut due to the tearing of the blade, resulting in an uneven cut or a crooked cut after cutting.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic film cutting tool, comprising a housing, a film placement groove laterally formed inside the housing, a blade groove formed above the film placement groove, a T-shaped cutting blade inserted into the blade groove, a first toothed groove formed on one side of the T-shaped cutting blade, a first limiting cavity formed above the blade groove, an insert plate inserted into the top of the first limiting cavity, a first spring connected to the bottom side of the insert plate, a gear groove formed on one side of the blade groove, and a toothed toothed groove provided inside the gear groove. The gear has a limiting hole on the side of the gear groove away from the blade groove. A pressure rod is vertically inserted into the limiting hole. The pressure rod has a second tooth groove on the side facing the T-shaped cutting blade. A spring mounting groove is formed on the bottom side of the pressure rod. A second spring is inserted into the spring mounting groove. A second limiting cavity is formed on the bottom side of the limiting hole. An L-shaped baffle is set in the second limiting cavity. A third spring is connected to the upper side wall of the L-shaped baffle. A pressure plate is connected to the bottom end of the L-shaped baffle. The upper side of the pressure plate is in contact with the upper side wall of the film placement groove.

[0006] Preferably, the limiting hole is connected to the second limiting cavity, and the second spring at the bottom of the pressure rod is connected to the L-shaped baffle. When the pressure rod is pressed down, the L-shaped baffle and the pressure plate are first squeezed by the second spring, so that the pressure plate presses down and fixes the plastic film to be cut.

[0007] Preferably, the shaped gear is rotatably engaged with the gear groove, the blade groove is laterally connected to the limiting hole through the gear groove, one side of the shaped gear meshes with the first tooth groove, and the other side of the shaped gear meshes with the second tooth groove.

[0008] Preferably, the T-shaped cutting blade is connected by a first spring. When the pressure rod moves downward, the second tooth groove moves downward, causing the shaped gear to rotate. The rotation of the shaped gear causes the T-shaped cutting blade with the first tooth groove on the other side to move upward. When the shaped gear rotates to the part with missing teeth and contacts the first tooth groove, the T-shaped cutting blade rebounds rapidly downward under the compression of the first spring, thereby cutting the plastic film through the up-and-down vibration of the T-shaped cutting blade.

[0009] Preferably, one end of the third spring is in contact with the L-shaped baffle, and the other end of the third spring is in contact with the bottom sidewall of the second limiting cavity.

[0010] Preferably, a blade receiving groove is provided on the bottom side of the film placement groove, the blade receiving groove is vertically aligned with the blade groove, and a buffer pad is provided at the bottom of the blade receiving groove, which can effectively protect the blade of the vibrating T-shaped cutting knife.

[0011] Compared with the prior art, this utility model provides a cutting tool for cutting plastic film, which has the following advantages:

[0012] By design, when the plastic film needs to be cut, the plastic film is passed through the film placement groove, and then the pressure rod is pressed down. During the downward movement of the pressure rod, the L-shaped baffle and the pressure plate are first squeezed by the second spring, so that the pressure plate presses down and fixes the plastic film to be cut. At the same time, when the pressure rod moves down, the second tooth groove moves down and drives the special gear to rotate. The rotation of the special gear drives the T-shaped cutting blade with the first tooth groove on the other side to move up. When the special gear rotates to the part with missing teeth and contacts the first tooth groove, the T-shaped cutting blade rebounds quickly downward under the compression of the first spring. Thus, the plastic film is cut by the up and down vibration of the T-shaped cutting blade. In this structure, the blade can cut quickly under the limit of the pressure plate and the rebound of the spring, thus avoiding the problem that the film will be torn by the blade and the cut will be wavy and curled, resulting in an uneven film cut or a crooked cut after cutting. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a plastic film cutting tool provided in an embodiment of this application.

[0014] Figure 2 This is a schematic diagram of the housing structure of a plastic film cutting tool provided in an embodiment of this application.

[0015] Figure 3This is a cross-sectional view of the housing of a plastic film cutting tool provided in an embodiment of this application.

[0016] Figure 4 This is a schematic diagram of the structure of a T-shaped cutting blade in a plastic film cutting tool provided in an embodiment of this application.

[0017] Figure 5 This is a cross-sectional view of the pressure bar in a plastic film cutting tool provided in an embodiment of this application.

[0018] Figure 6 This is a schematic diagram of the irregular gear structure in a plastic film cutting tool provided in an embodiment of this application.

[0019] In the diagram: 1. Housing; 2. First limiting cavity; 3. Blade groove; 4. Gear groove; 5. Limiting hole; 6. Second limiting cavity; 7. Blade receiving groove; 8. Film placement groove; 9. T-shaped cutting blade; 901. First tooth groove; 10. First spring; 11. Insert plate; 12. Irregular gear; 13. Pressure rod; 1301. Second tooth groove; 14. Spring placement groove; 15. Second spring; 16. Pressure plate; 17. L-shaped baffle; 18. Third spring. Detailed Implementation

[0020] 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.

[0021] This utility model provides a technical solution: a cutting tool for cutting plastic film. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6The device includes a housing 1, within which a film placement groove 8 is laterally formed. Above the film placement groove 8, a blade groove 3 is formed, into which a T-shaped cutting blade 9 is inserted. A first toothed groove 901 is formed on one side of the T-shaped cutting blade 9. Above the blade groove 3, a first limiting cavity 2 is formed, with an insert plate 11 inserted into the top of the first limiting cavity 2. A first spring 10 is connected to the bottom side of the insert plate 11. A gear groove 4 is formed on one side of the blade groove 3, into which a non-circular gear 12 is disposed. A toothed groove 901 is formed on the side of the gear groove 4 away from the blade groove 3. A limiting hole 5 is provided, and a pressure rod 13 is vertically inserted into the limiting hole 5. The pressure rod 13 has a second toothed groove 1301 on the side facing the T-shaped cutting blade 9. A spring mounting groove 14 is provided on the bottom side of the pressure rod 13. A second spring 15 is inserted into the spring mounting groove 14. A second limiting cavity 6 is provided on the bottom side of the limiting hole 5. An L-shaped baffle 17 is provided in the second limiting cavity 6. A third spring 18 is connected to the upper side wall of the L-shaped baffle 17. A pressure plate 16 is connected to the bottom end of the L-shaped baffle 17. The upper side of the pressure plate 16 is in contact with the upper side wall of the film placement groove 8.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The limiting hole 5 is connected to the second limiting cavity 6. The second spring 15 at the bottom of the pressure rod 13 is connected to the L-shaped baffle 17. When the pressure rod 13 is pressed down, the pressure rod 13 first squeezes the L-shaped baffle 17 and the pressure plate 16 through the second spring 15, so that the pressure plate 16 presses down and fixes the plastic film to be cut. The irregular gear 12 is rotatably engaged with the gear groove 4. The blade groove 3 is laterally connected to the limiting hole 5 through the gear groove 4. One side of the irregular gear 12 meshes with the first tooth groove 901, and the other side of the irregular gear 12 meshes with the second tooth groove 1301. The T-shaped cutting blade 9 is connected through the first spring 10. When the pressure rod 13 moves down, the second tooth groove 1301 moves down and drives the irregular gear 9 to move down. When the shaped gear 12 rotates, the rotation of the irregular gear 12 drives the T-shaped cutting blade 9 with the first tooth groove 901 on the other side to move upward. When the irregular gear 12 rotates to the part with missing teeth and contacts the first tooth groove 901, the T-shaped cutting blade 9 rebounds rapidly downward under the compression of the first spring 10, thereby cutting the plastic film through the up and down vibration of the T-shaped cutting blade 9. One end of the third spring 18 is pressed and contacted by the L-shaped baffle 17, and the other end of the third spring 18 is pressed and contacted by the bottom side wall of the second limiting cavity 6. The bottom side of the film placement groove 8 is provided with a blade receiving groove 7, which is vertically aligned with the blade groove 3. A buffer pad is provided at the bottom of the blade receiving groove 7, which can effectively protect the blade of the vibrating T-shaped cutting blade 9.

[0023] The tool for cutting plastic film in this utility model includes a housing 1, a film placement groove 8 is horizontally formed inside the housing 1, a blade groove 3 is formed above the film placement groove 8, a first limiting cavity 2 is formed above the blade groove 3, a gear groove 4 is formed on one side of the blade groove 3, a limiting hole 5 is formed on the side of the gear groove 4 away from the blade groove 3, a second limiting cavity 6 is formed on the bottom side of the limiting hole 5, and a blade receiving groove 7 is formed on the bottom side of the film placement groove 8, the blade receiving groove 7 is vertically aligned with the blade groove 3;

[0024] A T-shaped cutting blade 9 is inserted into the blade groove 3. The upper T-shaped part of the T-shaped cutting blade 9 is set in the first limiting cavity 2. A first spring 10 is installed on the top of the T-shaped cutting blade 9. An insert plate 11 is installed on the top of the first spring 10 and is inserted into the top of the first limiting cavity 2.

[0025] A non-standard gear 12 is rotatably engaged in the gear groove 4. The teeth of the non-standard gear 12 are partially missing. A pressure rod 13 is slidably inserted into the limiting hole 5. A spring mounting groove 14 is opened on the bottom side of the pressure rod 13. A second spring 15 is installed in the spring mounting groove 14. A pressure plate 16 is horizontally arranged in the film placement groove 8. The upper side of the pressure plate 16 is in contact with the upper side wall of the film placement groove 8. An L-shaped baffle 17 is installed on the upper side of the pressure plate 16. The L-shaped baffle 17 passes through the bottom side wall of the second limiting cavity 6 and is installed in the second limiting cavity 6. A third spring 18 is installed on the L-shaped baffle 17. The bottom end of the third spring 18 is in contact with the bottom side wall of the second limiting cavity 6. The second spring 15 at the bottom of the pressure rod 13 is in contact with the upper side wall of the L-shaped baffle 17.

[0026] Furthermore, a first toothed groove 901 is provided on the side of the T-shaped cutting blade 9 facing the pressure rod 13, and a second toothed groove 1301 is provided on the side of the pressure rod 13 facing the T-shaped cutting blade 9. The symmetrical teeth on both sides of the shaped gear 12 mesh with the first toothed groove 901 and the second toothed groove 1301 respectively.

[0027] When the plastic film needs to be cut, the plastic film is passed through the film placement groove 8, and then the pressure rod 13 is pressed down. During the downward movement of the pressure rod 13, the L-shaped baffle 17 and the pressure plate 16 are first squeezed by the second spring 15, so that the pressure plate 16 presses down and fixes the plastic film to be cut. At the same time, when the pressure rod 13 moves down, the second tooth groove 1301 moves down and drives the irregular gear 12 to rotate. The rotation of the irregular gear 12 drives the T-shaped cutting blade 9 with the first tooth groove 901 on the other side. When the irregular gear 12 rotates to the part with missing teeth and contacts the first tooth groove 901, the T-shaped cutting blade 9 rebounds rapidly downward under the compression of the first spring 10, thereby cutting the plastic film through the up and down vibration of the T-shaped cutting blade 9. In this structure, the blade can cut quickly under the limitation of the pressure plate 16 and the rebound of the spring, thereby avoiding the film from being torn by the blade and causing wavy curling at the cut, resulting in an uneven film cut or a crooked cut after cutting.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting tool for cutting plastic film, comprising a housing (1), characterized in that: A film placement groove (8) is horizontally opened inside the housing (1). A blade groove (3) is opened above the film placement groove (8). A T-shaped cutting blade (9) is inserted into the blade groove (3). A first tooth groove (901) is opened on one side of the T-shaped cutting blade (9). A first limiting cavity (2) is opened above the blade groove (3). An insert plate (11) is inserted into the top of the first limiting cavity (2). A first spring (10) is connected to the bottom side of the insert plate (11). A gear groove (4) is opened on one side of the blade groove (3). A special-shaped gear (12) is provided in the gear groove (4). A limiting hole is opened on the side of the gear groove (4) away from the blade groove (3). 5) A pressure rod (13) is vertically inserted into the limiting hole (5). The pressure rod (13) has a second tooth groove (1301) on the side facing the T-shaped cutting knife (9). A spring mounting groove (14) is opened on the bottom side of the pressure rod (13). A second spring (15) is inserted into the spring mounting groove (14). A second limiting cavity (6) is opened on the bottom side of the limiting hole (5). An L-shaped baffle (17) is provided in the second limiting cavity (6). A third spring (18) is connected to the upper side wall of the L-shaped baffle (17). A pressure plate (16) is connected to the bottom end of the L-shaped baffle (17). The upper side of the pressure plate (16) is in contact with the upper side wall of the film placement groove (8).

2. The plastic film cutting tool according to claim 1, characterized in that: The shaped gear (12) is rotatably engaged with the gear groove (4), the blade groove (3) is laterally connected to the limiting hole (5) through the gear groove (4), one side of the shaped gear (12) meshes with the first tooth groove (901), and the other side of the shaped gear (12) meshes with the second tooth groove (1301).

3. The plastic film cutting tool according to claim 1, characterized in that: The T-shaped cutting blade (9) is connected by a first spring (10).

4. The plastic film cutting tool according to claim 1, characterized in that: The limiting hole (5) is connected to the second limiting cavity (6), and the second spring (15) at the bottom of the pressure rod (13) is connected to the L-shaped baffle (17).

5. A cutting tool for cutting plastic film according to claim 1, characterized in that: One end of the third spring (18) is pressed against the L-shaped baffle (17), while the other end of the third spring (18) is pressed against the bottom sidewall of the second limiting cavity (6).

6. The plastic film cutting tool according to claim 1, characterized in that: The bottom side of the film placement groove (8) is provided with a blade receiving groove (7), which is vertically aligned with the blade groove (3).

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