Film cutter device

Abstract

The utility model relates to the technical field of film cutting, in particular to a film cutter device which is installed on a supporting frame and comprises an installation base and a cutter head which are parallel to each other, an installation hole channel is formed in the center of the installation base, and a rotating shaft penetrating through the installation base is rotatably installed in the installation hole channel through a bearing. A positioning disc with the center penetrated by the rotating shaft is fixed to the rotating shaft, a spring pin is perpendicularly installed on the face, right opposite to the positioning disc, of the installation base, a plurality of positioning holes which can be matched with the spring pin in an inserted mode and are located on the same circular track are formed in the face, right opposite to the spring pin, of the positioning disc, and the distance between every two adjacent positioning holes is consistent. A through hole for the rotating shaft to penetrate through is formed in the center of the cutter head, the cutter head is installed on the rotating shaft in a sleeving mode and can rotate along with the positioning disc and the rotating shaft, a plurality of cutters in one-to-one correspondence with the positioning holes are installed on the front face, back to the positioning disc, of the cutter head, and cutter heads of the cutters extend out of the cutter head. According to the utility model, the cutter can be safely and accurately replaced without shutdown, and the production cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of film cutting, in particular to a film cutting device. Background Art

[0002] As a precision processing method, thin film cutting technology plays an important role in the processing of thin film materials. Thin film materials are developing in the direction of thinner, more complex and more specialized, which puts higher requirements on cutting technology, including equipment precision, cutter wear resistance and cutting adaptability.

[0003] Nowadays, flat knife slitting is the most commonly used method for film cutting on the market. The knife will wear out after long-term use and needs to be checked and replaced regularly. If it is not replaced in time, the cutting accuracy cannot be guaranteed, which may easily affect the cutting surface. However, the knife structure of the existing technology is inconvenient to replace and the film production line needs to be shut down for replacement, resulting in high replacement costs. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a film cutter device, which is equipped with multiple cutters. The cutter disc can be rotated by a cutter changing rod and cooperated with a spring pin and a positioning hole to achieve safe and accurate replacement of the cutters without stopping the machine, thereby greatly reducing costs.

[0005] The utility model is realized through the following technical solutions:

[0006] A film cutting device is provided, which is installed on a supporting frame of a frame, and comprises a mounting seat and a cutter disc which are arranged vertically and parallel to each other. A mounting hole is provided at the center of the mounting seat, and a rotating shaft which passes through the mounting seat is rotatably installed in the mounting hole through a bearing, and a positioning plate whose center is penetrated by the positioning plate is fixed on the rotating shaft. A spring pin is vertically installed on a side of the mounting seat facing the positioning plate, and a plurality of positioning holes which can be plugged and matched with the spring pin and are located on the same circular trajectory are provided on a side of the positioning plate facing the spring pin, and the spacing between adjacent positioning holes is consistent; a through hole is provided in the center of the cutter disc for the rotating shaft to pass through, and the cutter disc is sleeved and installed on the rotating shaft and can rotate with the positioning plate and the rotating shaft, and a plurality of cutters which correspond to the positioning holes are respectively installed on the front side of the cutter disc which is opposite to the positioning plate, and the cutter heads of the cutters extend out of the cutter disc.

[0007] The film cutting device of this solution solves the problem of replacing cutting tools safely, effectively and accurately without stopping the machine during continuous film production.

[0008] Furthermore, the cutters are distributed on the cutter disc in a spiral divergent shape, and each cutter is installed at the same angle with the cutter disc.

[0009] The cutters are arranged on the cutter disc in a spiral divergent shape, and the angles of each cutter remain consistent, which facilitates the positioning of the cutter and ensures accuracy.

[0010] Furthermore, a knife groove for accommodating and limiting the position of the cutter is formed on the cutter disc corresponding to each cutter, and the cutter is fixed in the knife groove of the cutter disc by screws.

[0011] A knife groove is provided on the knife disc, and the tail of the cutter is limited by the knife groove, and screws are used to fix the cutter, so as to ensure the stability of the cutter on the knife disc and prevent the cutter from loosening.

[0012] Furthermore, a thread is provided at the end of the rotating shaft, and the cutter disc is fixed on the rotating shaft by a limit nut.

[0013] A thread is arranged at the end of the rotating shaft, and the cutter disc is locked by a limit nut in cooperation with the thread, so that the cutter disc can be fixed on one side of the positioning disc, which is convenient for disassembly, replacement and installation of the cutter disc.

[0014] Furthermore, a straight slot is formed on the end surface of the rotating shaft, a tool changing rod is movably arranged on the support frame and a straight protrusion is formed on the end of the tool changing rod to match the slot.

[0015] A slot is formed at the end of the rotating shaft, and a tool changing rod is arranged on the support frame. The protrusion at the end of the tool changing rod cooperates with the slot at the end of the rotating shaft. The tool changing rod can be manually rotated to drive the rotating shaft to rotate, thereby driving the cutter disc to rotate, so as to facilitate the tool changing operation.

[0016] Furthermore, the positioning disk is a ratchet, the number of ratchet teeth on the ratchet is the same as the number of positioning holes and corresponds one to one, and a mounting seat is rotatably installed above the ratchet with a stop pawl that can cooperate with the ratchet through a pawl fixing shaft. The mounting seat is also provided with a spring fixing rod on one side of the pawl fixing shaft, and a spring is connected between the spring fixing rod and the stop pawl.

[0017] The mounting seat is provided with a stop pawl above the ratchet, which can cooperate with the ratchet teeth of the ratchet to assist in limiting the rotation of the ratchet, which can not only prevent the ratchet from driving the cutter disc to reverse, but also cooperate with the spring pin to increase the stability of the ratchet driving the cutter disc to rotate and position.

[0018] Beneficial effects of the utility model:

[0019] The film cutter device of the utility model uses a cutter disc to fix the cutter, and at least 6 cutters can be installed at one time. The spring pin cooperates with the positioning hole, and the ratchet pawl kit cooperates with each other, so that the limit lock can be performed at the correct cutting position to ensure the accuracy during adjustment.

[0020] The utility model can be configured with the required tool model according to different products and different production requirements. At the same time, multiple cutters of the same type can be assembled as spare parts. When in use, it is only necessary to operate and rotate the cutter change rod outside the equipment to realize manual and quick replacement of the cutter. This design avoids the problem of stopping the machine to replace the cutter when producing different films and when there is a problem with the cutter, greatly improving the applicability of the film cutter device to materials. Manual and quick replacement of the cutter can reduce the impact of the problem cutter on the cutting accuracy, and can optimally control the cutting depth of the cutter, and mill a groove at the contact position between the cutter and the support roller to prevent the production of thinner films from causing film damage to the part outside the cutting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of Example 1 of the present utility model.

[0022] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0023] Figure 3 for Figure 2 Schematic diagram of the back side of the center positioning plate.

[0024] Figure 4 This is a schematic diagram of the installation of the cutter disc in Example 2 of the present utility model.

[0025] Figure 5 for Figure 4 A quarter section view.

[0026] Figure 6 for Figure 4 Schematic diagram of the installation structure of the middle ratchet and spring pin.

[0027] As shown in the figure:

[0028] 1. Support frame, 2. Tool changing rod, 3. Mounting seat, 4. Positioning plate, 5. Tool disc, 6. Cutter, 7. Rotating shaft, 8. Slot, 9. Thread, 10. Pawl fixing shaft, 11. Ratchet, 12. Ratchet teeth, 13. Stop pawl, 14. Spring fixing rod, 15. Spring, 16. Bearing, 17. Limit nut, 18. Positioning hole. DETAILED DESCRIPTION

[0029] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0030] Embodiment 1:

[0031] As shown in the figure, a film cutting device is installed on a support frame 1 of a frame, including a mounting seat 3 and a knife disc 5 which are vertically arranged and parallel to each other. A mounting hole is opened in the center of the mounting seat 3, and a rotating shaft 7 which passes through the mounting seat 3 is rotatably installed in the mounting hole through a bearing 16. A positioning plate 4 whose center is penetrated by it is fixed on the rotating shaft 7. A spring pin is vertically installed on the side of the mounting seat 3 facing the positioning plate 4. A plurality of positioning holes 18 which can be plugged with the spring pin and are located on the same circular trajectory are opened on the side of the positioning plate 4 facing the spring pin, and the spacing between adjacent positioning holes 18 is consistent; a through hole is opened in the center of the knife disc 5 for the rotating shaft 7 to pass through, and the knife disc 5 is sleeved and installed on the rotating shaft 7 and can rotate with the positioning plate 4 and the rotating shaft 7. A thread 9 is set at the end of the rotating shaft 7, and the knife disc 5 is fixed to the rotating shaft 7 by a limit nut 17. The end surface of the rotating shaft 7 is concavely provided with a straight slot 8 , and a tool changing rod 2 is movably provided on the support frame 1 and a straight protrusion matching the slot 8 is formed at the end of the tool changing rod 2 .

[0032] A plurality of cutters 6 corresponding to the positioning holes 18 are installed on the front side of the cutter disc 5 facing away from the positioning disc 4. The cutter heads of the cutter 6 extend out of the cutter disc 5. The cutters 6 are distributed on the cutter disc 5 in a spiral divergent shape, and each cutter 6 is installed at the same angle as the cutter disc 5.

[0033] In order to ensure the stability of the installation of the cutter 6, a knife groove for accommodating and limiting the cutter 6 is formed on the cutter disc 5, and the cutter 6 is fixed in the knife groove of the cutter disc 5 by screws.

[0034] When the utility model is in use, the required tool models are prepared according to different product installations and different production requirements. At the same time, multiple cutters 6 of the same type can also be assembled as spare parts. The cutters 6 are fixedly installed in the knife grooves of the cutter disc 5 by screws, and then the cutter disc 5 with the cutter 6 installed is installed on the rotating shaft 7 as a whole through the limit nut 17. The positioning disk 4 on one side of the cutter disc 5 is used to limit and lock the cutter 6 on the cutter disc 5. By operating the tool changing rod 2, the I-shaped protrusion at the end of the tool changing rod 2 is inserted into the I-shaped slot 8 at the end of the rotating shaft 7. The tool changing rod 2 can be used to rotate to drive the rotating shaft 7 to rotate. The rotating shaft 7 rotates to drive the cutter disc 5 and the positioning disk 4 on one side of the cutter disc 5 to rotate. The positioning hole 18 on the positioning disk 4 will be plugged and matched with the spring pin after contacting the spring pin to complete the locking of a position. In the production process, it is only necessary to operate the tool changing rod 2 outside the equipment to achieve rapid replacement of the cutter 6. Such a design can effectively avoid the problem of stopping the machine to replace the cutter 6 when producing different films or when the cutter 6 has problems, greatly improving the applicability of the cutter device to materials. At the same time, the cutter 6 can be replaced quickly, reducing the impact of the faulty cutter 6 on the cutting accuracy.

[0035] Embodiment 2:

[0036] In this embodiment, on the basis of embodiment 1, the positioning disk 4 is replaced by a ratchet 11. The number of ratchet teeth 12 on the ratchet 11 is the same as the number of positioning holes 18 and corresponds one to one. A mounting seat 3 is rotatably mounted above the ratchet 11 via a pawl fixing shaft 10 with a stop pawl 13 that can cooperate with the ratchet 11. The mounting seat 3 is also provided with a spring fixing rod 14 on one side of the pawl fixing shaft 10, and a spring 15 is connected between the spring fixing rod 14 and the stop pawl 13.

[0037] By replacing the positioning disk with a ratchet 11, a stop pawl 13 is provided above the ratchet 11 on the mounting seat 3, and the number of ratchet teeth 12 on the ratchet 11 is the same as the number of positioning holes 18 and corresponds one to one. The stop pawl 13 can cooperate with the ratchet teeth 12 on the ratchet 11, which can not only assist the positioning holes 18 and the spring pin in playing a limiting positioning role, but also the cooperation between the ratchet 11 and the stop pawl 13 can effectively prevent the blade 5 from rotating in the opposite direction, thereby improving the stability of the blade 5 when working.

[0038] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A film cutting device, mounted on a support frame of a frame, comprising a mounting seat and a cutter disc arranged vertically and parallel to each other, characterized in that: A mounting hole is provided at the center of the mounting seat, and a rotating shaft that passes through the mounting seat is rotatably installed in the mounting hole through a bearing, a positioning plate with its center passed through is fixed on the rotating shaft, a spring pin is vertically installed on a side of the mounting seat facing the positioning plate, a side of the positioning plate facing the spring pin is provided with a plurality of positioning holes that can be plugged with the spring pin and are located on the same circular trajectory, and the spacing between adjacent positioning holes is consistent; a through hole for the rotating shaft to pass through is provided at the center of the cutter disc, the cutter disc sleeve is installed on the rotating shaft and can rotate with the positioning plate and the rotating shaft, a plurality of cutters corresponding to the positioning holes are respectively installed on the front side of the cutter disc facing away from the positioning plate, and the cutter heads extend out of the cutter disc.

2. The film cutting device according to claim 1, characterized in that: The cutters are distributed on the cutter disc in a spiral divergent shape, and each cutter is installed at the same angle with the cutter disc.

3. The film cutting device according to claim 1 or 2, characterized in that: A knife groove for accommodating and limiting the position of the cutter is formed on the cutter disc corresponding to each cutter, and the cutter is fixed in the knife groove of the cutter disc by screws.

4. The film cutting device according to claim 1, characterized in that: The end of the rotating shaft is provided with a thread, and the cutter disc is fixed on the rotating shaft through a limit nut.

5. The film cutting device according to claim 1 or 4, characterized in that: The end surface of the rotating shaft is concavely provided with a straight slot, and a tool changing rod arranged transversely is movably provided on the support frame, and a straight protrusion matching with the slot is formed at the end of the tool changing rod.

6. The film cutting device according to claim 1, characterized in that: The positioning disk is a ratchet, the number of ratchet teeth on the ratchet is the same as the number of positioning holes and corresponds one to one. A mounting seat is rotatably installed above the ratchet with a stop pawl that can cooperate with the ratchet. The mounting seat is also provided with a spring fixing rod on one side of the pawl fixing shaft, and a spring is connected between the spring fixing rod and the stop pawl.

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