A film cutting mechanism for processing a stretched film

Abstract

The application discloses a stretching film processing cutting mechanism and belongs to the technical field of stretching film production. The stretching film processing cutting mechanism comprises two lifting plates, which are arranged on the two sides of a stretching film body and are driven to lift by external force; a pressing plate is symmetrically arranged on one side of the lifting plate, and two groups of the pressing plates are arranged on the side, close to each other, of the two lifting plates; and cutting knives are slidably arranged on the side, close to each other, of the two lifting plates, and the two cutting knives are symmetrically arranged on the two sides of the stretching film body. The application effectively solves the problem that, in the prior art, the film body is prone to displacement and wrinkling at the cutting moment due to the traction and positioning of front and rear roller groups, thereby affecting the flatness of the cut and the production quality, realizes accurate fixing of the film body during cutting, guarantees the flatness of the cut, and improves the production quality and efficiency.

Description

Technical Field

[0001] This application relates to the field of stretch film production technology, and more specifically, to a film-cutting mechanism for stretch film processing. Background Technology

[0002] Stretch film is a packaging material with high toughness and strong tensile strength. During its production process, the continuously produced rolls of stretch film need to be cut into finished products of specified lengths by a film-cutting mechanism to meet the needs of different scenarios.

[0003] In related technologies, in order to solve the problems of poor accuracy and inconvenient, cumbersome and laborious operation when cutting stretch film at equal intervals, for example, the patent with the prior art publication number CN214352659U provides a film-cutting mechanism for the production and processing of stretch film. This film-cutting mechanism drives the cutting blade to perform up-and-down reciprocating cutting through the meshing transmission between the half gear and the toothed ring. At the same time, it cooperates with the conveyor roller to process the stretch film in batches, which greatly improves the working efficiency of the film-cutting mechanism, makes the operation convenient and labor-saving, and can also cut the stretch film at equal intervals, thus improving the accuracy of the film-cutting mechanism during cutting.

[0004] Although the existing technical solutions mentioned above improve the working efficiency of the film cutting mechanism by cutting the film back and forth with the cutting blade, they rely solely on the traction and positioning of the front and rear roller groups during cutting. This makes the film body susceptible to displacement and wrinkling due to the impact force of the cutting blade at the moment of cutting, affecting the flatness of the cut and thus affecting the production quality of the stretch film.

[0005] In view of this, we propose a film-cutting mechanism for stretch film processing. Utility Model Content

[0006] The purpose of this application is to provide a film cutting mechanism for stretch film processing, which can effectively solve the problem in the prior art that the film body is prone to displacement and wrinkling during the cutting moment due to the traction and positioning of the front and rear roller groups, thus affecting the flatness of the cut and the production quality. It achieves the effect of accurately fixing the film body during cutting, ensuring the flatness of the cut, and improving the production quality and efficiency.

[0007] This application provides a film-cutting mechanism for stretch film processing, comprising: There are two lifting plates, which are respectively located on both sides of the stretch membrane body. The lifting plates are driven to rise and fall by external force. Pressure plates are symmetrically arranged on one side of the lifting plate, and two sets of pressure plates are arranged on the side of the two lifting plates that are close to each other; The film-cutting blade is slidably disposed on one side of the two lifting plates that are close to each other, and the two film-cutting blades are symmetrically disposed on both sides of the stretch film body.

[0008] As an optional solution to the technical solution of this application, a connecting column is fixedly provided on the top of the pressure plate, the connecting column is slidably provided on the inner side of the lifting plate, and a spring is sleeved on the outer side of the connecting column.

[0009] As an optional solution to the technical solution in this application, a limit plate is fixedly provided at the end of the connecting column away from the pressure plate to prevent the connecting column from sliding out from the inside of the lifting plate.

[0010] As an optional solution to the technical solution of this application, a slide rail A is provided on the inner side of the lifting plate, a mounting base is fixedly provided on the side of the two cutting blades that are far apart from each other, and a slider B is fixedly provided on the outer side of the mounting base. The slide rail A and the slider B are slidably disposed, and the slider B is driven by an external force to slide along the slide rail A.

[0011] As an optional solution to the technical solution of this application, a connecting plate is fixedly provided on the side of the slider B away from the cutting blade. The connecting plate is fixedly provided on the output end of the electric push rod A. The electric push rod A is fixedly provided on the outside of the corresponding lifting plate through a fixed seat.

[0012] As an optional solution to the technical solution of this application, the lifting plate is fixedly installed at the output end of the electric push rod B, and a slider A is fixedly installed on the outer side of the lifting plate, and the slider A is slidably installed on the inner side of the slide rail B.

[0013] As an optional solution to the technical solution of this application, the stretch membrane body is provided with upright plates on both sides, the slide rail B is fixedly provided on the outside of the upright plates, the top and bottom of the two upright plates are fixedly provided with horizontal plates, and the electric push rod B is fixedly provided on the inside of the corresponding horizontal plate.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: (1) Since this application uses pressure plates, when the stretch film body needs to be cut, the two lifting plates are brought closer to each other, so that the pressure plates on both sides can be elastically fixed to the stretch film body, and the cutting position is located between the two pressure plates. Then, the two lifting plates are brought closer to each other, thereby driving the two cutting blades to move to both sides of the stretch film body respectively, and the two cutting blades are on the same horizontal line. The two cutting blades are driven by the two electric push rods A to cut the stretch film body in turn. Therefore, it effectively solves the problem in the prior art that the film body is easy to shift and wrinkle at the moment of cutting due to the traction positioning of the front and rear roller groups, which affects the flatness of the cut and the production quality. It achieves the effect of accurately fixing the film body during cutting, ensuring the flatness of the cut, and improving the production quality and efficiency.

[0015] (2) This application sets a spring-loaded connecting column between the pressure plate and the lifting plate, and uses the elastic deformation of the spring to achieve flexible pressing of the membrane. It can automatically adjust the pressing force according to the different thicknesses of the stretch membrane, avoiding the problem of thin membrane being damaged by pressure and thick membrane not being pressed firmly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the film-cutting mechanism for stretch film processing disclosed in a preferred embodiment of this application; Figure 2 This is a schematic diagram of the assembly of the electric push rod B and the vertical plate in the film cutting mechanism for stretch film processing disclosed in a preferred embodiment of this application. Figure 3 This is a schematic diagram of the assembly of the lifting plate and the pressure plate in the film cutting mechanism for stretch film processing disclosed in a preferred embodiment of this application; Figure 4 This is a schematic diagram of the structure of the film-cutting blade in the film-cutting mechanism for stretch film processing disclosed in a preferred embodiment of this application; The following are the labels in the diagram: 100, stretch film body; 200, conveyor roller; 1, lifting plate; 11, slide rail A; 12, slider A; 13, slide rail B; 2, pressure plate; 21, connecting column; 211, limiting plate; 22, spring; 3, film cutter; 31, mounting base; 32, slider B; 33, connecting plate; 34, electric push rod A; 341, fixed base; 4, electric push rod B; 5, vertical plate; 51, horizontal plate. Detailed Implementation

[0017] The present application will be further described in detail below with reference to the accompanying drawings.

[0018] Reference Figure 1 and Figure 2 This application discloses a film-cutting mechanism for stretch film processing, including two lifting plates 1, which are respectively disposed on both sides of a stretch film body 100. The lifting plates 1 are driven to rise and fall by external force. Two pressure plates 2 are disposed on the side of the two lifting plates 1 that are close to each other. The two pressure plates 2 are symmetrically disposed. Film-cutting blades 3 are slidably disposed on the side of the two lifting plates 1 that are close to each other. The two film-cutting blades 3 are symmetrically disposed on both sides of the stretch film body 100. Two sets of conveying rollers 200 are respectively disposed on both sides of the stretch film body 100 to drive the stretch film body 100 to rotate.

[0019] By rotating synchronously with two sets of conveyor rollers 200, the stretch film body 100 is transported to the cutting area between the two lifting plates 1. After the stretch film body 100 is transported to the specified length, the conveyor rollers 200 stop operating and then drive the two lifting plates 1 to move closer to each other. First, the stretch film body 100 is pressed and fixed by the pressure plate 2, and then the cutting action is completed by the film cutting knife 3, so as to achieve precise cutting of the stretch film.

[0020] Reference Figure 2 and Figure 3 A connecting column 21 is fixedly installed on the top of the pressure plate 2. The connecting column 21 is slidably installed on the inner side of the lifting plate 1. A spring 22 is sleeved on the outer side of the connecting column 21. A limit plate 211 is fixedly installed at the end of the connecting column 21 away from the pressure plate 2 to prevent the connecting column 21 from sliding out from the inner side of the lifting plate 1.

[0021] The lifting plate 1 drives the pressure plate 2 to approach the stretching membrane body 100. When the pressure plate 2 contacts the surface of the stretching membrane body 100, the lifting plate 1 continues to move downward. At this time, the connecting column 21 slides along the inner side of the lifting plate 1, the spring 22 is compressed and generates an elastic reaction force, so that the pressure plate 2 presses the stretching membrane body 100 with appropriate pressure, which not only prevents the membrane from shifting, but also prevents the membrane from being damaged by excessive pressure. At the same time, the limiting plate 211 can effectively limit the sliding stroke of the connecting column 21 and prevent it from coming out of the lifting plate 1.

[0022] Reference Figure 2 and Figure 4 A slide rail A11 is provided on the inner side of the lifting plate 1. A mounting base 31 is fixedly provided on the side of the two cutting blades 3 that are far apart from each other. A slider B32 is fixedly provided on the outer side of the mounting base 31. The slide rail A11 and the slider B32 are slidably arranged. The slider B32 is driven by an external force to slide along the slide rail A11. A connecting plate 33 is fixedly provided on the side of the slider B32 that is far away from the cutting blades 3. The connecting plate 33 is fixedly arranged at the output end of the electric push rod A34. The electric push rod A34 is fixedly arranged on the outer side of the corresponding lifting plate 1 through the fixing base 341.

[0023] When the electric push rod A34 is powered on, its output end pushes the connecting plate 33 to move, which in turn drives the slider B32 to slide along the slide rail A11. Since the slider B32 is fixedly connected to the mounting base 31, and the mounting base 31 is fixed to the cutting blade 3, the cutting blade 3 is finally moved along the slide rail. By controlling the sequential activation of the two electric push rods A34, the two film-cutting blades 3 can move orderly from both sides of the stretch film body 100 towards the middle, completing the cutting of the stretch film body 100. The cooperation between the slide rail A11 and the slider B32 ensures the linearity of the movement of the film-cutting blades 3 and improves the cutting accuracy.

[0024] Reference Figure 2 and Figure 3 The lifting plate 1 is fixedly installed at the output end of the electric push rod B4. A slider A12 is fixedly installed on the outer side of the lifting plate 1. The slider A12 is slidably installed on the inner side of the slide rail B13. Vertical plates 5 are provided on both sides of the stretch film body 100. The slide rail B13 is fixedly installed on the outer side of the vertical plates 5. Horizontal plates 51 are fixedly installed at the top and bottom of the two vertical plates 5. The electric push rod B4 is fixedly installed on the inner side of the corresponding horizontal plate 51.

[0025] When the electric push rod B4 is powered on, its output end drives the lifting plate 1 to move up and down. At the same time, the slider A12 on the outside of the lifting plate 1 slides along the slide rail B13 on the vertical plate 5. The cooperation between the slider A12 and the slide rail B13 provides guidance for the lifting of the lifting plate 1, ensuring that the two lifting plates 1 always move in parallel, avoiding uneven pressing of the pressure plate 2 or misalignment of the cutting blade 3 due to lifting deviation. The frame structure formed by the vertical plate 5 and the horizontal plate 51 provides stable support for the entire mechanism, ensuring the coordinated operation of all components.

[0026] In summary, when the stretch film processing and cutting mechanism disclosed in this application is in use, the stretch film body 100 is first transported to the cutting area by two sets of conveying rollers 200, and the conveying rollers 200 stop after the set length is reached. Subsequently, the electric push rod B4 drives the two lifting plates 1 to approach each other along the slide rail B13. The lifting plate 1 drives the pressure plate 2 to contact the stretch film body 100, and the spring 22 is compressed to generate elastic pressure to press and fix the stretch film body 100. Then, the two electric push rods A34 drive the film-cutting blades 3 to move along the slide rail A11 in turn. The two film-cutting blades 3 cut from both sides of the stretch film body 100 toward the middle in turn to complete the film-cutting action. After cutting, the electric push rod B4 drives the lifting plate 1 to reset, and the pressure plate 2 disengages from the stretch film body 100. This mechanism first presses the stretch film body 100 with the pressure plate 2, and then cuts the stretch film body 100 with the film cutting knife 3. This completely solves the problems of displacement and wrinkling of the stretch film body 100 during cutting by traditional mechanisms. At the same time, the sliding guide structure of each component further ensures the cutting accuracy and operational stability, effectively improving the production quality and processing efficiency of the stretch film.

[0027] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A film-cutting mechanism for stretch film processing, characterized in that, Include: There are two lifting plates (1), which are respectively located on both sides of the stretch film body (100). The lifting plates (1) are driven to rise and fall by external force. Pressure plates (2) are symmetrically arranged on one side of lifting plates (1), and the two sets of pressure plates (2) are arranged on the side of the two lifting plates (1) that are close to each other; The film-cutting blade (3) is slidably disposed on one side of the two lifting plates (1) that are close to each other, and the two film-cutting blades (3) are symmetrically disposed on both sides of the stretch film body (100).

2. The film-cutting mechanism for stretch film processing according to claim 1, characterized in that: A connecting column (21) is fixedly installed on the top of the pressure plate (2). The connecting column (21) is slidably installed on the inner side of the lifting plate (1). A spring (22) is sleeved on the outer side of the connecting column (21).

3. The film-cutting mechanism for stretch film processing according to claim 2, characterized in that: A limit plate (211) is fixedly provided at the end of the connecting column (21) away from the pressure plate (2) to prevent the connecting column (21) from sliding out from the inside of the lifting plate (1).

4. The film-cutting mechanism for stretch film processing according to claim 1, characterized in that: The inner side of the lifting plate (1) is provided with a slide rail A (11), and the two cutting blades (3) are fixedly provided with a mounting base (31) on the side away from each other. The outer side of the mounting base (31) is fixedly provided with a slider B (32). The slide rail A (11) and the slider B (32) are slidably arranged. The slider B (32) is driven by an external force to slide along the slide rail A (11).

5. The film-cutting mechanism for stretch film processing according to claim 4, characterized in that: A connecting plate (33) is fixedly installed on the side of the slider B (32) away from the cutting blade (3). The connecting plate (33) is fixedly installed at the output end of the electric push rod A (34). The electric push rod A (34) is fixedly installed on the outside of the corresponding lifting plate (1) through the fixing seat (341).

6. The film-cutting mechanism for stretch film processing according to claim 1, characterized in that: The lifting plate (1) is fixedly installed at the output end of the electric push rod B (4), and a slider A (12) is fixedly installed on the outer side of the lifting plate (1). The slider A (12) is slidably installed on the inner side of the slide rail B (13).

7. The film-cutting mechanism for stretch film processing according to claim 6, characterized in that: The stretch film body (100) is provided with upright plates (5) on both sides, the slide rail B (13) is fixedly provided on the outside of the upright plate (5), the top and bottom of the two upright plates (5) are fixedly provided with horizontal plates (51), and the electric push rod B (4) is fixedly provided on the inside of the corresponding horizontal plate (51).

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