Edge cutting device for PET (polyethylene terephthalate) resin film

Abstract

The utility model belongs to the technical field of resin film production, and particularly relates to a PET (Polyethylene Terephthalate) resin film trimming device which comprises a compression roller assembly for dynamically clamping a PET resin film during trimming, cutter assemblies mounted at two axial ends of the compression roller assembly and used for trimming the PET resin film, and a winding roller for winding the PET resin film after trimming, a plurality of guide rollers are arranged on the two sides, in the conveying direction of the PET resin film, of the pressing roller assembly; the pressing roller assembly is adopted, and the cutter assemblies are installed at the two axial ends of the pressing roller assembly, so that dynamic clamping is conducted during edge cutting of the PET resin film, the stability of the PET resin film at the cutting point can be guaranteed, the edge cutting accuracy and consistency of the PET resin film are effectively guaranteed, and it is guaranteed that the edge of the PET resin film after edge cutting is neat and flawless.

Description

Technical Field

[0001] This utility model belongs to the field of resin film production technology, and in particular relates to a PET resin film edge cutting device. Background Technology

[0002] Solar cell backsheet films are typically made of PET resin film, which is produced by removing impurities from the resin, melting and plasticizing it, extruding it, casting it, stretching and shaping it, and then cutting it to a fixed width.

[0003] Traditionally, PET resin film is cut at fixed widths after biaxial stretching and before winding. Therefore, the cutting device is usually placed at the end of the production line to ensure that the produced PET resin film has neat and flawless edges. However, existing cutting devices have poor stability when the PET resin film passes through the cutting point of the cutter, which can easily affect the cutting effect of the PET resin film. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a PET resin film edge-cutting device that effectively improves the stability of the PET resin film as it passes the cutting point of the cutter.

[0005] In view of this, the present invention provides a PET resin film edge-cutting device, comprising:

[0006] The pressure roller assembly is used for dynamic clamping of PET resin film during edge trimming.

[0007] The cutter assembly is installed at both ends of the pressure roller assembly and is used to cut the edges of the PET resin film;

[0008] Multiple guide rollers are provided, and they are respectively arranged on both sides of the pressure roller assembly along the conveying direction of the PET resin film;

[0009] Take-up rollers are used to rewind PET resin films after the edges have been trimmed.

[0010] In the above technical solution, further;

[0011] The pressure roller assembly includes a support roller and a clamping roller, and a gap is formed between the support roller and the clamping roller for the PET resin film to pass through;

[0012] Both the support roller and the clamping roller can rotate as the PET resin film is conveyed, and the support roller has a first shaft at both ends of its axial direction, while the clamping roller has a second shaft at both ends.

[0013] In the above technical solution, the cutting blade assembly further includes:

[0014] The pressure roller includes a support roller sleeved on the first shaft and a clamping roller sleeved on the second shaft, and can be slidably adjusted along the axial direction;

[0015] The first bolt is installed on the pressure roller and is used to lock the pressure roller after sliding adjustment;

[0016] The cutter holder includes a first cutter holder sleeved on a first shaft and a second cutter holder sleeved on a second shaft, and is capable of sliding adjustment along the axial direction, and a first cutter and a second cutter are respectively installed on the first cutter holder and the second cutter holder;

[0017] The second bolt is installed on the cutter holder and is used to lock the cutter holder after sliding adjustment;

[0018] A drive unit is installed at one axial end of the pressure roller assembly and is used to drive the first shaft to rotate;

[0019] In this process, the first and second cutters, which are in a rotating state, work together to trim the edges of the PET resin film.

[0020] In the above technical solution, further:

[0021] Both the support wheel and the clamping wheel include a first body and a first cylinder axially disposed on the side of the first body;

[0022] The first cylinder has a first threaded hole, and the first bolt is threaded into the first threaded hole.

[0023] In the above technical solution, further:

[0024] The inner wall of the first cylinder is provided with a first semicircular surface, a second semicircular surface, and a first plane for transition between the first semicircular surface and the second semicircular surface, and the first threaded hole is provided on the first semicircular surface.

[0025] The second semicircular surface is coaxial with the first shaft, while the first semicircular surface is eccentric to the axis of the first shaft.

[0026] In the above technical solution, further:

[0027] Both the first and second cutting tool holders include a second body and a second cylinder axially disposed on one side of the second body;

[0028] The second cylinder has a second threaded hole, and the second bolt is connected to the second threaded hole.

[0029] In the above technical solution, further:

[0030] The inner wall of the second cylinder is provided with a third semicircular surface, a fourth semicircular surface, and a second plane for transition between the third semicircular surface and the fourth semicircular surface, and the second threaded hole is provided on the third semicircular surface.

[0031] The fourth semicircular surface is coaxial with the second shaft, while the third semicircular surface is eccentrically positioned relative to the axis of the second shaft.

[0032] In the above technical solution, the driving component further includes:

[0033] A drive motor is installed on one axial side of the pressure roller assembly, and its output shaft is connected to the first shaft body via a coupling;

[0034] The drive gear is mounted on the first cutter holder;

[0035] The driven gear is mounted on the second cutter holder and meshes with the driving gear.

[0036] The beneficial effects of this utility model are as follows:

[0037] 1. By using a pressure roller assembly and installing the cutter assembly at both ends of the pressure roller assembly, dynamic clamping is achieved when cutting the PET resin film. This ensures the stability of the PET polyester film at the cutting point, effectively guarantees the accuracy and consistency of the PET resin film cutting, and ensures that the edges of the PET resin film after cutting are neat and flawless.

[0038] 2. By setting the pressure roller, the stability of the PET resin film near the cutter is ensured, further guaranteeing its stability at the cutting point. Both the pressure roller and the cutter holder can slide and adjust along the axial direction, thus effectively ensuring the stability of the PET resin film cutting edge even if the cutting point in the axial direction changes.

[0039] 3. The locking mechanism using bolts offers advantages such as simple structure, low cost, and convenient operation. By placing the threaded holes for bolt installation on one side with an eccentric inner wall, axial adjustment is facilitated. After locking with bolts, the coaxiality of the pressure roller and cutter holder with the first and second shafts is effectively guaranteed, ensuring dynamic clamping and edge cutting of the PET resin film. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of this utility model;

[0041] Figure 2 This is an exploded view of the cutting blade assembly of this utility model;

[0042] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the middle;

[0043] Figure 4 This is a utility model Figure 3 Enlarged view of point B in the middle;

[0044] Figure 5 This is a utility model Figure 3 Enlarged view of point C in the middle;

[0045] The markings in the diagram represent: 1. Pressure roller assembly; 10. Support roller; 11. Clamping roller; 12. First shaft; 13. Second shaft; 2. Cutting assembly; 20. Support wheel; 200. First body; 201. First cylinder; 202. First threaded hole; 203. First semi-circular surface; 204. Second semi-circular surface; 205. First plane; 21. Clamping wheel; 22. First bolt; 23. First cutter holder; 230. Second body; 231. Second cylinder; 232. Second threaded hole; 233. Third semi-circular surface; 234. Fourth semi-circular surface; 235. Second plane; 24. Second cutter holder; 25. First cutter; 26. Second cutter; 27. Second bolt; 28. Driving component; 280. Drive motor; 281. Drive gear; 282. Driven gear; 3. Guide roller; 4. Take-up roller. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0047] Example 1:

[0048] This embodiment provides a PET resin film edge-cutting device, including:

[0049] Pressure roller assembly 1 is used for dynamic clamping of PET resin film during edge trimming.

[0050] The cutter assembly 2 is installed at both ends of the pressure roller assembly 1 and is used to cut the edges of the PET resin film;

[0051] Multiple guide rollers 3 are provided and are respectively arranged on both sides of the pressure roller assembly 1 along the PET resin film conveying direction;

[0052] 4 winding rollers are used to wind up the PET resin film after the edges have been trimmed.

[0053] The specific structures of the guide roller 3 and the winding roller 4, as well as the specific structure of the edge-cutting device of this application that is directly connected to the PET resin film production line, are all existing technologies and can be learned by those skilled in the art from conventional equipment, and will not be described in detail here.

[0054] As can be seen from this embodiment, by using the pressure roller assembly 1 and installing the cutter assembly 2 at both ends of the axial direction of the pressure roller assembly 1, dynamic clamping is performed when cutting the PET resin film. This ensures the stability of the PET polyester film at the cutting point, effectively guarantees the accuracy and consistency of the PET resin film cutting, and ensures that the edges of the PET resin film after cutting are neat and without defects.

[0055] Example 2:

[0056] This embodiment provides a PET resin film edge cutting device, which, in addition to the technical solutions of the above embodiments, also has the following technical features;

[0057] The pressure roller assembly 1 includes a support roller 10 and a clamping roller 11, and a gap is formed between the support roller 10 and the clamping roller 11 for the PET resin film to pass through.

[0058] Both the support roller 10 and the clamping roller 11 can rotate as the PET resin film is conveyed. The support roller 10 has a first shaft 12 at both ends of its axial direction, and the clamping roller 11 has a second shaft 13 at both ends of its axial direction.

[0059] As can be seen from this embodiment, by setting the pressure roller assembly 1 as a support roller 10 and a clamping roller 11, and forming a gap between them for the PET resin film to pass through, it is possible to avoid the clamping roller 11 and the support roller 10 affecting the thickness of the PET resin film and ensure product quality.

[0060] The first shaft 12 and the second shaft 13 facilitate the rotational installation of the support roller 10 and the clamping roller 11, thereby effectively ensuring the dynamic clamping of the PET resin film.

[0061] Example 3:

[0062] This embodiment provides a PET resin film edge-cutting device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the cutter assembly 2 includes:

[0063] The pressure roller includes a support roller 20 sleeved on the first shaft 12 and a clamping roller 21 sleeved on the second shaft 13, and can be slidably adjusted along the axial direction.

[0064] The first bolt 22 is installed on the pressure roller and is used to lock the pressure roller after sliding adjustment;

[0065] The cutter holder includes a first cutter holder 23 sleeved on a first shaft 12 and a second cutter holder 24 sleeved on a second shaft 13, and can be slidably adjusted along the axial direction, and a first cutter 25 and a second cutter 26 are respectively installed on the first cutter holder 23 and the second cutter holder 24;

[0066] The second bolt 27 is installed on the cutter holder and is used to lock the cutter holder after sliding adjustment;

[0067] The drive component 28 is installed at one axial end of the pressure roller assembly 1 and is used to drive the first shaft 12 to rotate.

[0068] In this process, the first cutter 25 and the second cutter 26, which are in a rotating state, work together to cut the edges of the PET resin film.

[0069] As can be seen from this embodiment, by setting the axially adjustable support wheel 20 and clamping wheel 21, the stability of the PET resin film at the cutting point can be effectively guaranteed, preventing the curling of the edge. Furthermore, the axially adjustable first cutter holder 23 and second cutter holder 24 can not only adjust the cutting size of the PET resin film, but also maintain a small cutting gap between the cutter holder and the pressure roller, facilitating the insertion of the cutter and improving the cutting accuracy and product quality.

[0070] Furthermore, the drive unit 28 can drive the pressure roller assembly 1 and the cutter assembly 2 to rotate, effectively ensuring the cutting effect of the PET resin film.

[0071] Example 4:

[0072] This embodiment provides a PET resin film edge-cutting device, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0073] Both the support wheel 20 and the clamping wheel 21 include a first body 200 and a first cylinder 201 axially disposed on the side of the first body 200;

[0074] The first cylinder 201 has a first threaded hole 202, and the first bolt 22 is threadedly connected to the first threaded hole 202.

[0075] Meanwhile, the first body 200 and the first cylinder 201 can be integrated into one structure, and the first bolt 22 passes through the first threaded hole 202 and abuts against the first shaft 12 to lock the support wheel 20, and abuts against the second shaft 13 to lock the clamping wheel 21.

[0076] As can be seen from this embodiment, the locking of the support wheel 20 and the clamping wheel 21 after adjustment by using the cooperation of the first bolt 22 and the first threaded hole 202 has the advantages of simple structure, low cost and convenient operation.

[0077] Example 5:

[0078] This embodiment provides a PET resin film edge-cutting device, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0079] The inner wall of the first cylinder 201 is provided with a first semicircular surface 203, a second semicircular surface 204 and a first plane 205 for transition between the first semicircular surface 203 and the second semicircular surface 204, and a first threaded hole 202 is provided on the first semicircular surface 203.

[0080] The second semicircular surface 204 is coaxially arranged with the first shaft 12, while the first semicircular surface 203 is eccentrically arranged with respect to the axis of the first shaft 12.

[0081] As can be seen from this embodiment, by setting the first threaded hole 202 for mounting the first bolt 22 on one side with an eccentric inner wall, it is convenient to adjust axially. After locking by the first bolt 22, the coaxiality between the support wheel 20 and the first shaft 12 and between the clamping wheel 21 and the second shaft 13 can be effectively guaranteed, thus ensuring the dynamic clamping and edge cutting effect of the PET resin film.

[0082] Meanwhile, the first plane 205 allows the first cylinder 201 to remain offset on the first shaft 12 before the first bolt 22 engages and locks, thereby maintaining the clearance fit between the first cylinder 201 and the first shaft 12 and ensuring the ease of axial adjustment of the first cylinder 201, i.e., the support wheel 20. Similarly, it ensures the ease of axial adjustment of the clamping wheel 21.

[0083] Example 6:

[0084] This embodiment provides a PET resin film edge-cutting device, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0085] Both the first cutting tool holder 23 and the second cutting tool holder 24 include a second body 230 and a second cylinder 231 axially disposed on one side of the second body 230;

[0086] The second cylinder 231 has a second threaded hole 232, and the second bolt 27 is connected to the second threaded hole 232.

[0087] As can be seen from this embodiment, the locking of the support wheel 20 and the clamping wheel 21 after adjustment by using the cooperation of the second bolt 27 and the second threaded hole 232 has the advantages of simple structure, low cost and convenient operation.

[0088] Example 7:

[0089] This embodiment provides a PET resin film edge-cutting device, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0090] The inner wall of the second cylinder 231 is provided with a third semicircular surface 233, a fourth semicircular surface 234 and a second plane 235 for transition between the third semicircular surface 233 and the fourth semicircular surface 234, and the second threaded hole 232 is provided on the third semicircular surface 233.

[0091] The fourth semicircular surface 234 is coaxial with the second shaft 13, while the third semicircular surface 233 is eccentrically positioned with respect to the axis of the second shaft 13.

[0092] As can be seen from this embodiment, by setting the second threaded hole 232 for mounting the second bolt 27 on one side with an eccentric inner wall, it is convenient to adjust axially. After locking by the second bolt 27, the coaxiality between the first cutter holder 23 and the first shaft 12 and between the second cutter holder 24 and the second shaft 13 can be effectively guaranteed, thus ensuring the dynamic clamping and cutting effect of the PET resin film.

[0093] Meanwhile, the setting of the second plane 235 allows the second cylinder 231 to remain offset on the second shaft 13 before the second bolt 27 engages and locks, thereby maintaining the clearance fit between the second cylinder 231 and the second shaft 13, ensuring the ease of axial adjustment of the second cylinder 231, i.e. the first cutter holder 23. Similarly, it ensures the ease of axial adjustment of the second cutter holder 24.

[0094] Example 8:

[0095] This embodiment provides a PET resin film edge-cutting device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the driving component 28 includes:

[0096] The drive motor 280 is installed on one axial side of the pressure roller assembly 1, and its output shaft is connected to the first shaft 12 via a coupling;

[0097] The drive gear 281 is mounted on the first cutter holder 23;

[0098] Driven gear 282 is mounted on the second cutter holder 24 and meshes with drive gear 281.

[0099] As can be seen from this embodiment, by adopting the configuration of the driving gear 281 and the driven gear 282, it is convenient to drive the first shaft 12 and the second shaft 13 by a single drive motor 280, so that the first cutter 25 on the first cutter holder 23 and the second cutter 26 on the second cutter holder 24 both rotate. Thus, when cutting the PET resin film, a scissor-like cutting method is adopted, which effectively ensures the accuracy and consistency of the cutting edge, and ensures that the edge is neat and flawless.

[0100] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A PET resin film edge-cutting device, characterized in that, include: The pressure roller assembly (1) is used for dynamic clamping of the PET resin film during edge trimming; The cutter assembly (2) is installed at both ends of the pressure roller assembly (1) and is used to cut the PET resin film. Multiple guide rollers (3) are provided and are respectively arranged on both sides of the pressure roller assembly (1) along the PET resin film conveying direction; The take-up roller (4) is used to take up the PET resin film after the edges are cut.

2. The PET resin film edge-cutting device according to claim 1, characterized in that; The pressure roller assembly (1) includes a support roller (10) and a clamping roller (11), and a gap is formed between the support roller (10) and the clamping roller (11) for the PET resin film to pass through; The support roller (10) and the clamping roller (11) are both able to rotate as the PET resin film is conveyed, and the support roller (10) has a first shaft (12) at both ends of its axial direction, and the clamping roller (11) has a second shaft (13) at both ends of its axial direction.

3. The PET resin film edge-cutting device according to claim 2, characterized in that, The cutting blade assembly (2) includes: The pressure roller includes a support roller (20) sleeved on the first shaft (12) and a clamping roller (21) sleeved on the second shaft (13), and can be slidably adjusted along the axial direction; The first bolt (22) is installed on the pressure roller and is used to lock the pressure roller after sliding adjustment; The cutter holder includes a first cutter holder (23) sleeved on a first shaft (12) and a second cutter holder (24) sleeved on a second shaft (13), and is capable of sliding adjustment along the axial direction, and a first cutter (25) and a second cutter (26) are respectively installed on the first cutter holder (23) and the second cutter holder (24); The second bolt (27) is installed on the cutter holder and is used to lock the cutter holder after sliding adjustment; A drive unit (28) is installed at one axial end of the pressure roller assembly (1) and is used to drive the first shaft (12) to rotate. In this process, the first cutter (25) and the second cutter (26) in the rotating state cooperate with each other to cut the PET resin film.

4. The PET resin film edge-cutting device according to claim 3, characterized in that: Both the support wheel (20) and the clamping wheel (21) include a first body (200) and a first cylinder (201) axially disposed on the side of the first body (200); The first cylinder (201) has a first threaded hole (202) and the first bolt (22) is threaded into the first threaded hole (202).

5. The PET resin film edge-cutting device according to claim 4, characterized in that: The inner wall of the first cylinder (201) is provided with a first semicircular surface (203), a second semicircular surface (204) and a first plane (205) for transition between the first semicircular surface (203) and the second semicircular surface (204), and a first threaded hole (202) is provided on the first semicircular surface (203); The second semicircular surface (204) is coaxial with the first shaft (12), and the first semicircular surface (203) is eccentric with the first shaft (12).

6. The PET resin film edge-cutting device according to claim 3, characterized in that: The first cutter holder (23) and the second cutter holder (24) both include a second body (230) and a second cylinder (231) axially disposed on one side of the second body (230); The second cylinder (231) has a second threaded hole (232) and a second bolt (27) is connected to the second threaded hole (232).

7. The PET resin film edge-cutting device according to claim 6, characterized in that: The inner wall of the second cylinder (231) is provided with a third semicircular surface (233), a fourth semicircular surface (234) and a second plane (235) for transition between the third semicircular surface (233) and the fourth semicircular surface (234), and the second threaded hole (232) is provided on the third semicircular surface (233); The fourth semicircular surface (234) is coaxial with the second shaft (13), and the third semicircular surface (233) is eccentrically positioned with respect to the axis of the second shaft (13).

8. The PET resin film edge-cutting device according to claim 3, characterized in that, The drive unit (28) includes: A drive motor (280) is installed on one axial side of the pressure roller assembly (1), and its output shaft is connected to the first shaft (12) via a coupling. The drive gear (281) is mounted on the first cutter holder (23); The driven gear (282) is mounted on the second cutter holder (24) and meshes with the driving gear (281).

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