Thin film slitter edge cutting device

Abstract

The utility model provides a film slitter edge cutting device, and belongs to the technical field of film production equipment. Comprising a tool rest which is provided with a tool apron for installing a tool and a position adjusting mechanism. The tool apron is provided with a cushioning groove which allows relative displacement between the tool and the tool apron to occur and enables the relative position of the tool and the tool apron to return to the initial position after the relative displacement occurs at the tool mounting position; and an elastic assembly is arranged in the cushioning groove in the displacement direction of the cutter. According to the thin film slitter edge cutting device, the cushioning groove provided with the elastic assembly provides displacement and buffering capacity with the tool apron for the tool, when the relative position between the thin film and the edge cutting equipment is changed, the tool is correspondingly driven by the thin film to slightly move, dynamic matched cutting is formed, and therefore relative displacement is eliminated; the surface tension of the film does not need to be changed while good cutting is achieved, no extra requirements for the film production speed and the surface tension of the film exist, and adaptability is high.

Description

Technical Field

[0001] The present application belongs to the technical field of film production equipment, and more specifically, relates to a film waste edge cutting device. Background Art

[0002] Film waste edge removal is an important process in the film production process. It is suitable for removing uneven or incomplete waste edges produced in the film production process to retain a flat, complete and smooth film. The overall shape of the film will no longer change significantly after the waste edge removal. Therefore, the quality of waste edge removal will directly determine the quality of the finished film. One of the important reasons affecting the quality of film removal is the relative displacement between the film and the trimming equipment. The inherent vibration of the film production equipment, the fluctuation of the film under the interference of airflow, and the shaking caused by the relaxation of the film when it is cut will affect the quality of the film trimming.

[0003] In the prior art, in order to improve the quality of film trimming, the technical solution adopted is to adjust the film surface tension to reduce the vibration of the film surface. For example, the Chinese utility model patent with publication number CN209797039U provides a trimming machine, which discloses that a roller for adjusting the film surface tension and blocking the film surface vibration is set between the unwinding roller and the winding roller. The horizontal and vertical movements of the roller are adjusted by an adjustment mechanism to change the tension of the film surface, thereby reducing the jitter of the film surface and improving the trimming effect.

[0004] However, the prior art has certain deficiencies. Specifically, the device is an off-line trimming device and requires reprocessing of the rolled film. If it is directly used in the production line for online cutting, the film surface tension adjustment between the unwinding roller and the winding roller will lead to a mismatch between the film winding and the normal film delivery speed. Therefore, it is not suitable for online cutting and increases the production process. Summary of the invention

[0005] The present application provides a device for cutting off waste edges of thin films, which can avoid the influence of relative movement between the film and the cutting device during film cutting, and can solve the problem that the film cutting device for reducing the vibration of the film surface in the prior art is not suitable for online cutting and increases the production process.

[0006] In order to solve the above problems, the technical solution adopted in the present application is a film waste edge cutting device, comprising a knife holder, a knife seat for mounting a knife is arranged on the knife holder, and a position adjustment mechanism is arranged on the knife holder;

[0007] The tool holder is provided with a damping groove at the tool installation position, which allows relative displacement between the tool and the tool holder and returns the relative position of the tool and the tool holder to the initial position after the relative displacement occurs; an elastic component is provided in the damping groove in the displacement direction of the tool.

[0008] Preferably, the tool is movably connected to the tool holder via at least two connecting shafts, and all connecting shafts of the tool are located in the damping grooves which are inclined and parallel to each other.

[0009] Preferably, the tool is movably connected to the tool holder through at least two connecting shafts, and a fixed groove allowing the connecting shaft to rotate is provided at the connection between the tool and the tool holder. Only one connecting shaft is located in the fixed groove, and the shock-absorbing groove is an arc with the fixed groove as the arc center.

[0010] Preferably, the position adjustment mechanism includes a horizontal position adjustment mechanism, a vertical position adjustment mechanism and an angle adjustment mechanism.

[0011] Preferably, a pressure mechanism is provided inside the tool holder, and the pressure mechanism consists of a slide groove and a sliding piece. The slide groove and the shock-absorbing groove are parallel to each other. The sliding piece is arranged in the slide groove and can slide freely in the slide groove. The sliding piece is made of a material with magnetic force. The connecting shaft located in the shock-absorbing groove is a magnetic material, and the elastic component and the tool holder are non-magnetic materials.

[0012] Preferably, at least two cutting tools are installed in parallel on the cutting tool seat.

[0013] Preferably, the tool consists of a tool handle and a blade, the connecting shaft between the tool and the tool holder is a magnetic connecting shaft, and the blade and the tool handle are connected via the magnetic connecting shaft.

[0014] Preferably, the inclination angle between the shock absorbing groove and the bottom edge of the knife seat is 30°-60°.

[0015] Preferably, the arc angle of the shock absorbing groove is 60°-90°.

[0016] The beneficial effects of the utility model are:

[0017] 1. The cushioning groove with elastic components is provided to provide the tool with the ability to move relative to the tool holder and return to the initial position. When the relative position between the film and the trimming device changes due to the inherent vibration of the film production equipment, the fluctuation of the film under the interference of airflow, and the shaking caused by the instantaneous relaxation of the film when it is cut, the tool also moves slightly under the drive of the film, forming a dynamic matching cutting, thereby eliminating the relative displacement;

[0018] 2. There are no special requirements for the working environment. It is suitable for online film cutting and can be directly set in offline film cutting equipment. There are no additional requirements for film production speed and film surface tension, and it has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments or the prior art description:

[0020] Figure 1It is a three-dimensional schematic diagram of the overall structure of this application;

[0021] Figure 2 It is a front view schematic diagram of the overall structure of this application;

[0022] Figure 3 It is a side view schematic diagram of the overall structure of this application;

[0023] Figure 4 This is a three-dimensional schematic diagram of the installation of the tool holder and the tool in Example 1 of the present application;

[0024] Figure 5 This is a front view schematic diagram of the tool holder and tool installation in Example 1 of the present application;

[0025] Figure 6 This is a schematic side view of the installation of the tool holder and the tool in Example 1 of the present application;

[0026] Figure 7 yes Figure 6 AA section view;

[0027] Figure 8 This is a front view schematic diagram of the tool holder and tool installation of Example 2 of the present application;

[0028] Fig. 9 This is a front view schematic diagram of the tool holder and tool installation of Example 3 of the present application;

[0029] Fig.10 This is a three-dimensional schematic diagram of a knife holder according to Embodiment 4 of the present application;

[0030] Fig.11 It is a front view schematic diagram of the knife holder in embodiment 4 of the present application.

[0031] Fig.12 It is a schematic side view of the knife holder in embodiment 4 of the present application.

[0032] Fig.13 yes Fig.10 BB cross-sectional view;

[0033] Fig.14 It is a front view schematic diagram of the knife holder of embodiment 5.

[0034] Description of reference numerals:

[0035] 1. Base plate; 2. Pillar fixing seat; 3. Pillar; 4. Vertical position adjustment mechanism; 5. Vertical slide; 6. Vertical position fixing button; 7. Horizontal position adjustment mechanism; 8. Horizontal slide; 9. Horizontal position fixing button; 10. Guide shaft; 11. Fixing block; 12. Knife holder; 13. First angle fixing bolt; 14. Second angle fixing bolt; 15. Limiting block; 16. Shock-absorbing groove; 17. Spring; 18. Tool connecting shaft; 19. Fixing groove; 20. Knife handle; 21 Blade connecting shaft; 22. Blade; 23. Slide groove; 24. Sliding piece. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] A film waste edge cutting device provided in an embodiment of the present application is now described:

[0039] Example 1

[0040] like Figure 1-5As shown, the film waste edge cutting device includes a tool holder. In this embodiment, the tool holder is composed of: a base 1 fixed to the side of the film production line to be cut, a pillar fixing seat 2 is arranged on the base 1, the pillar fixing seat 2 fixes the pillar 3 on the base 1, the pillar 3 carries a position adjustment mechanism and a tool holder 12 connected to the position adjustment mechanism, the tool holder 12 is used to install the tool, the tool holder includes a position adjustment mechanism, in this embodiment, the position adjustment mechanism includes a vertical position adjustment mechanism 4, a horizontal position adjustment mechanism 7 and an angle adjustment mechanism, the vertical position adjustment mechanism 4 includes a vertical slide 5 and a vertical position fixing button 6, the horizontal position adjustment mechanism 7 includes a horizontal slide 8 and a horizontal position fixing button 9, the angle adjustment mechanism includes a guide shaft 10, a fixing block 11, a first angle fixing bolt 13 and a second angle fixing bolt 14. Among them, the vertical slideway 5 of the vertical position adjustment mechanism 4 is directly connected to the support 3, the vertical position fixing button 6 is used to fix the position of the horizontal position adjustment mechanism 7 on the vertical slideway 5, and the horizontal slideway 8 of the horizontal position adjustment mechanism 7 is slidably connected to the vertical slideway 5 of the vertical position adjustment mechanism 4. One end of the guide shaft 10 is connected to the horizontal slideway 8 through a slider slidably connected to the horizontal slideway 8, and the horizontal position adjustment mechanism 7 is provided with a horizontal position fixing button 9 to fix the position of the slider of the guide shaft 10 on the horizontal slideway 8. The other end of the guide shaft 10 is provided with a fixing block 11, and the fixing block 11 is fixedly connected to the guide shaft 10. The guide shaft 10 passes through the fixing block 11 and the knife seat 12 in sequence and is detachably connected to the limit block 15. The limit block 15 fixes the axial position of the knife seat 12 on the guide shaft, and the knife seat 12 can rotate on the guide shaft 10. The first angle fixing bolt 13 and the second angle fixing bolt 14 are fixedly connected to the knife seat 12, and are used to fix the rotation angle of the relative rotation of the knife seat 12 and the fixing block 11.

[0041] When in use, the vertical position fixing button 6, the horizontal position fixing button 9, the first angle fixing bolt 13 and the second angle fixing bolt 14 are all completely locked. At this time, the vertical height, horizontal position and angle of the tool holder 12 are completely locked. After the vertical position fixing button 6 is loosened, the horizontal slide 8 can slide up and down on the vertical slide 5, thereby driving the horizontal position adjustment mechanism 7, the angle adjustment mechanism and the tool holder 12 to adjust their positions up and down until the vertical position fixing button 6 is tightened again.

[0042] After the horizontal position fixing button 9 is loosened, the slider can be adjusted in horizontal position on the horizontal slide 8, thereby driving the angle adjustment mechanism and the knife seat 12 to adjust their positions horizontally until the horizontal position fixing button 9 is tightened again.

[0043] After loosening the first angle fixing bolt 13 and the second angle fixing bolt 14, the tool holder 12 can rotate around the guide shaft 10 to adjust the angle. When the angle of the tool holder 12 is appropriate, tighten the first angle fixing bolt 13 and the second angle fixing bolt 14, and the angle of the tool holder 12 is completely fixed.

[0044] The knife seat 12 and the tool installation position are provided with a damping groove 16 that allows relative displacement between the tool and the knife seat 12 and returns the relative position of the tool and the knife seat 12 to the initial position after the relative displacement occurs; the knife seat 12 is provided with an elastic component in the displacement direction of the damping groove 16. In this embodiment, the tool includes a handle 20 and a blade 22, the knife seat 12 is connected to the handle 20 through a tool connecting shaft 18, the handle 20 is connected to the blade 22 through a blade connecting shaft 21, the tool connecting shaft 18 is provided in the damping groove 16, and elastic components are provided on both sides of the movable direction in the damping groove 16, and the elastic components are springs 17 in this embodiment.

[0045] During the production process, the blade 22 continuously cuts the film. The blade 22 moves forward driven by the forward movement of the film, and then drives the connected knife handle 20 to move forward. The knife handle 20 drives the tool connecting shaft 18 to move forward in the shock-absorbing groove 16. At this time, the tool connecting shaft 18 compresses the spring 17 in front of its movement direction and stretches the spring 17 behind its movement direction until the elastic force of the two springs 17 and the force generated by the film movement on the blade 22 are balanced with each other. In an ideal state where there is no inherent vibration of the equipment and the airflow interferes with the film fluctuation, this state will be maintained during the production process.

[0046] When the film and the blade 22 cause relative movement due to the inherent vibration of the equipment and the interference of the airflow with the film fluctuation, the blade 22 moves driven by the film, and then drives the connected handle 20 to move, and the handle 20 drives the tool connecting shaft 18 to move in the shock-absorbing groove 16. After the initial movement process of the blade 22 driven by the film is completed, the blade 22 returns to its initial position under the action of the elastic mechanism in the shock-absorbing groove 16, completing a whole shock-absorbing process. During this process, the blade 22 always moves smoothly.

[0047] Therefore, the shock absorbing groove 16 provides a great buffering effect for the relative movement between the blade 22 and the film, so that the relative position of the blade 22 and the film is maintained in a nearly fixed state, and the edge of the film after trimming is smooth and neat.

[0048] Furthermore, if Figure 5As shown, the tool is movably connected to the tool holder 12 through at least two tool connection shafts 18, and all tool connection shafts 18 of the tool are located in the damping grooves 16 which are arranged obliquely and parallel to each other. In this embodiment, two damping grooves 16 are arranged on the tool holder 12, and the movement of the tool connection shaft 18 in the damping grooves 16 is an inclined linear movement, which enables the position adjustment of the tool to adapt to the relative displacement of the tool and the film up and down and the relative displacement of the tool and the film front and back, and the adjustable range is large and the adjustment is flexible.

[0049] Furthermore, if Figure 5 As shown, at least two cutting tools are mounted in parallel on the cutting tool seat 12 .

[0050] In this embodiment, two knives are installed in parallel on the knife seat 12. Therefore, when the blade 22 becomes blunt and the cutting is poor, the blade 22 or the knife can be replaced while maintaining the normal operation of the equipment.

[0051] Furthermore, if Figure 6 and Figure 7 As shown, a pressure mechanism is arranged inside the tool holder 12, and the pressure mechanism is composed of a slide groove 23 and a slide 24. The slide groove 23 is parallel to the damping groove 16, and the slide 24 is arranged in the slide groove 23 and can slide freely in the slide groove 23. The slide 24 is made of a magnetic material, the tool connecting shaft 18 located in the damping groove 16 is a magnetic material, and the elastic component is a non-magnetic material. In this embodiment, the tool connecting shaft 18 is made of iron alloy, and the elastic component is a spring 17 made of titanium alloy.

[0052] In this embodiment, the slide groove 23 of the pressurizing mechanism is arranged between the two shock-absorbing grooves 16. The slide 24 in the slide groove 23 can simultaneously attract the tool connecting shafts 18 in the two shock-absorbing grooves 16. The slide 24 is affected by its own gravity and provides attraction to the tool connecting shaft 18 through its own magnetism, providing additional pressure for the contact between the tool and the film, avoiding the false cutting phenomenon caused by insufficient cutting pressure due to the movement of the blade 22, and optimizing the cutting effect.

[0053] Furthermore, if Figure 5 As shown, the tool is composed of a tool handle 20 and a blade 22. The tool connecting shaft 18 between the tool and the tool holder 12 is a magnetic connecting shaft, and the blade 22 and the tool handle 20 are also connected via a magnetic connecting shaft.

[0054] The film waste edge removal device used for online trimming is usually arranged at the exit of the film high temperature treatment device, where there is high temperature radiation for the operators who are replacing the tools. In order to reduce the impact of high temperature on the workers and improve the efficiency of tool replacement, a magnetic connecting shaft is provided to facilitate the replacement of the blade 22. The setting of the magnetic connecting shaft will not affect the operation of the pressurizing mechanism. It is only necessary to replace the original tool connecting shaft 18 made of magnetic material with a material having magnetic force.

[0055] Furthermore, if Figure 5 As shown, the inclination angle between the damping groove 16 and the bottom edge of the knife seat 12 is 30°-60°. The damping groove 16 within this range has the best effect on the knife position adjustment to adapt to the up-down relative displacement and the front-back relative displacement between the knife and the film. When the inclination angle of the damping groove 16 is lower than this range, the ability of the knife to adjust the up-down position will be reduced. When the inclination angle of the damping groove 16 is higher than this range, the ability of the knife to adjust the front-back position will be reduced. In this embodiment, the inclination angle between the damping groove 16 and the bottom edge of the knife seat 12 is 45°.

[0056] Figure 4-Figure 14 The schematic diagram of the tool holder only includes the lower half of the tool holder 12, that is, the connection part between the tool holder 12 and the tool.

[0057] Example 2

[0058] like Figure 8 As shown, the difference from Example 1 is that the inclination angle of the shock absorbing groove 16 in this embodiment and the bottom edge of the knife seat 12 is 30°. The design of the shock absorbing groove 16 with an inclination angle of 30° is more suitable for production scenarios with stable equipment operation and small mechanical vibration, and it has stronger shock absorbing ability in the horizontal direction.

[0059] Example 3

[0060] like Fig. 9 As shown, the difference from Example 1 is that the inclination angle of the shock absorbing groove 16 in this embodiment and the bottom edge of the knife seat 12 is 60°. The design of the shock absorbing groove 16 with an inclination angle of 60° is more suitable for production scenarios where the mechanical vibration of the equipment is large and the ambient airflow is difficult to control, and it has a stronger shock absorbing ability in the vertical direction.

[0061] Example 4

[0062] like Figure 10-13 As shown, this embodiment is different from the embodiment 1 only in the structure of the tool holder. The tool in this embodiment is movably connected to the tool holder 12 through two tool connecting shafts 18. A fixed groove 19 is provided at the connection between the tool and the tool holder 12 to allow the tool connecting shaft 18 to rotate. Only one tool connecting shaft 18 is located in the fixed groove 19. The damping groove 16 is an arc with the fixed groove 19 as the arc center. In this embodiment, the arc of the damping groove 16 is 90°. In addition, a pressurizing mechanism is also provided in this embodiment. The slide groove 23 of the pressurizing mechanism is consistent with the damping groove 16, and is also an arc with the fixed groove 19 as the arc center. Therefore, in this embodiment, as in the embodiment 1, the slide groove 23 is parallel to the damping groove 16.

[0063] When the film vibrates during the production process and drives the tool to move in the shock-absorbing groove 16, the tool connecting shaft 18 in the shock-absorbing groove 16 rotates around the tool connecting shaft 18 in the fixed groove 19, and then, one end of the tool is fixed in the position of the fixed groove 19, and the other end performs a circular motion around the fixed groove 19. Therefore, when the tool rotates driven by the vibration of the film and the vibration of the equipment, the contact point between the blade 22 and the film moves for the same distance, and the shock-absorbing effect is better.

[0064] In this embodiment, the slide groove 23 of the pressure mechanism of the knife seat 12 remains parallel to the shock absorbing groove 16. When adjusting the angle of the knife seat 12, the slide 24 can still remain at the lowest point to attract the knife, thereby increasing the contact pressure between the knife and the film to prevent false cutting.

[0065] Furthermore, if Fig.11 and Fig.14 As shown, the arc angle of the shock absorbing groove 16 is 60°-90°. Since the contact point of the blade 22 and the film has a longer travel distance when the contact point of the blade 22 and the film is displaced to the same height or horizontal distance when the arc-shaped shock absorbing groove 16 is used, the shock absorbing effect is better, so the arc angle of the arc-shaped shock absorbing groove 16 can be reduced, and the elastic component of the arc-shaped shock absorbing groove 16 with a small angle range can be shorter, which significantly improves the stability of the elastic component. This is because during the compression process of the elastic component, there may be uneven force, which causes the elastic component itself to tilt or bend.

[0066] Example 5

[0067] like Fig.14 As shown, the difference between this embodiment and embodiment 4 is that the arc of the shock absorbing groove 16 is 60°.

[0068] In this embodiment, the curvature of the arc-shaped shock-absorbing groove 16 is reduced, and the radial length of the elastic component used in this embodiment can be set shorter to prevent it from being deflected or bent during the compression process.

[0069] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A film waste edge cutting device, comprising a knife holder, a knife seat for mounting a knife on the knife holder, and a position adjustment mechanism, characterized in that: The tool holder is provided with a shock-absorbing groove at the tool installation position, which allows relative displacement between the tool and the tool holder and returns the relative position of the tool and the tool holder to the initial position after the relative displacement occurs; an elastic component is provided in the shock-absorbing groove in the displacement direction of the tool.

2. The film waste edge cutting device according to claim 1, characterized in that: The tool is movably connected to the tool holder via at least two connecting shafts, and all the connecting shafts of the tool are located in the damping grooves which are inclined and parallel to each other.

3. The film waste edge cutting device according to claim 1, characterized in that: The tool is movably connected to the tool holder through at least two connecting shafts. A fixing groove allowing the connecting shaft to rotate is provided at the connection between the tool and the tool holder. Only one connecting shaft is located in the fixing groove. The shock-absorbing groove is an arc with the fixing groove as the arc center.

4. The film waste edge cutting device according to claim 2 or 3, characterized in that: The position adjustment mechanism includes a horizontal position adjustment mechanism, a vertical position adjustment mechanism and an angle adjustment mechanism.

5. The film waste edge cutting device according to claim 2 or 3, characterized in that: A pressure mechanism is arranged inside the tool holder, and the pressure mechanism consists of a slide groove and a sliding piece. The slide groove is parallel to the shock-absorbing groove. The sliding piece is arranged in the slide groove and can slide freely in the slide groove. The sliding piece is made of a material with magnetic force. The connecting shaft located in the shock-absorbing groove is a magnetic material. The elastic component and the tool holder are non-magnetic materials.

6. The film waste edge cutting device according to any one of claims 1 to 3, characterized in that: At least two knives are installed in parallel on the knife seat.

7. The film waste edge cutting device according to claim 5, characterized in that: The tool is composed of a tool handle and a blade. The connecting shaft between the tool and the tool holder is a magnetic connecting shaft, and the blade and the tool handle are connected via the magnetic connecting shaft.

8. The film waste edge cutting device according to claim 2, characterized in that: The inclination angle between the shock absorbing groove and the bottom edge of the knife seat is 30°-60°.

9. The film waste edge cutting device according to claim 3, characterized in that: The arc angle of the shock absorbing groove is 60°-90°.

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