End clamping mechanism for tearing adhesive tape

Abstract

The utility model discloses an end clamping mechanism for tearing an adhesive tape, which comprises a driving part and a pair of moving plates driven by the driving part to get close to each other or get away from each other, and the opposite inner sides of the moving plates are both provided with a scraping module for scraping the end part of the adhesive tape and a clamping module for clamping the end part of the adhesive tape after being scraped to be flat; the scraping and shoveling module comprises a first positioning column arranged on the moving plate, a scraping and shoveling plate arranged at the tail end of the first positioning column in a front-back floating mode and a first spring arranged on the first positioning column in a sleeving mode and located between the moving plate and the scraping and shoveling plate; the clamping module comprises a second positioning column arranged on the moving plate, a clamping plate arranged at the tail end of the second positioning column in a front-back floating mode and a second spring arranged on the second positioning column in a sleeving mode and located between the moving plate and the clamping plate. According to the utility model, the problem that the adhesive tape is shoveled off or the surface of the assembly is scratched due to different bending degrees of the photovoltaic assembly can be solved.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic module manufacturing technology, and in particular relates to an end clamping mechanism for tearing adhesive tape. Background Technology

[0002] During the production of photovoltaic (PV) modules, a laminator is needed to press together several layers of materials, including glass, EVA, solar cells, and a backsheet. Before lamination, to ensure the proper installation position of each component, tape is usually applied around the perimeter of the PV module before it enters the laminator. After lamination, this tape needs to be removed. One end of the tape on the PV module perimeter protrudes 3-5cm from the edge of the module. This is to facilitate removing the tape from the module without manually searching for the end on the perimeter, while also ensuring the exposed length is not too long to avoid interfering with the module's processing. The four sets of tape protruding around the perimeter are arranged clockwise or counterclockwise. The ends of the tape often curl upwards or downwards, or even get pressed against the glass surface, making it difficult for the clamps to grip the tape properly. This requires manual intervention and reduces production efficiency.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN217100731U discloses a clamping mechanism comprising a fixed bracket, on which a clamping assembly and a scraper assembly are respectively mounted. The scraper assembly is used to flatten the end of the adhesive tape, and then the clamping assembly clamps the end of the adhesive tape. This solution, by scraping and flattening the end of the adhesive tape with the scraper assembly and then clamping it with the clamping assembly, can smoothly clamp the end of the adhesive tape without manual intervention, thereby improving production efficiency and ensuring smooth equipment operation. However, this solution still has the following problems:

[0004] (1) The scraper plate on the scraper assembly is fixed to the end of the positioning column, that is, the scraper plate is fixed. When the tape is torn off the side of the photovoltaic module, the bottom surface of the photovoltaic module is equipped with a lifting mechanism to lift the photovoltaic module. The photovoltaic module is large in size and thin in thickness, and the bending phenomenon will occur at the edge of the photovoltaic module. When the scraper plate is fixed and always horizontal, the scraper plate moves from the edge of the module away from the edge of the module. Due to the unevenness of the edge of the photovoltaic module, the scraper plate can easily cut the tape or damage the edge of the module. After the scraper plate cuts the tape, the problem of not being able to tear the tape will occur. The scraper plate damaging the edge of the module will cause the photovoltaic module to have hidden cracks or more serious quality problems, thus scrapping the photovoltaic module and reducing the module production yield.

[0005] (2) The scraping and clamping process is as follows: the second gripper cylinder controls the two fixed plates to move closer to each other, the scraper plate contacts the glass to perform the scraping action, and after the end of the tape is located between the two clamping blocks, the first gripper cylinder controls the two clamping blocks to move closer to each other, so as to achieve the clamping of the end of the tape. That is, the second gripper cylinder drives the clamping first, and then the first gripper cylinder drives the clamping action. The clamping component and the scraper component are driven by different driving components to perform the clamping and scraping actions, which will not only reduce the clamping cycle, but also make the structure of the entire clamping structure complicated by setting two gripper cylinders to drive them separately.

[0006] Therefore, it is necessary to provide an end-clamping mechanism for tearing tape to solve the above-mentioned technical problems. Utility Model Content

[0007] The main purpose of this utility model is to provide an end clamping mechanism for tearing tape, which can solve the problem of tape being cut or the surface of the photovoltaic module being scratched due to different curvature of the photovoltaic module.

[0008] This utility model achieves the above-mentioned objective through the following technical solution: an end-clamping mechanism for tearing adhesive tape, comprising a driving member and a pair of movable plates driven by the driving member to move closer or further apart from each other. Each movable plate has a scraper module for flattening the end of the adhesive tape and a clamping module for clamping the flattened end of the adhesive tape on its respective inner side. The scraper module includes a first positioning post disposed on the movable plate, a scraper plate that floats back and forth at the end of the first positioning post, and a first spring sleeved on the first positioning post and located between the movable plate and the scraper plate. The clamping module includes a second positioning post disposed on the movable plate, a clamping plate that floats back and forth at the end of the second positioning post, and a second spring sleeved on the second positioning post and located between the movable plate and the clamping plate.

[0009] Furthermore, each of the two first positioning posts, front and rear, is provided with a scraper plate at its end via a first cotter pin screw.

[0010] Furthermore, the end of the first positioning post is provided with a first through hole for the first cotter pin screw to be inserted horizontally. The height of the first through hole is greater than the height of the first cotter pin screw, that is, a first gap is provided in the first through hole for the first cotter pin screw to move up and down.

[0011] Furthermore, the scraper plate is provided with a first threaded hole that mates with the first cotter pin screw and a first oblong hole into which the end of the first positioning post extends. A second gap is formed between the front and rear sides of the first positioning post and the wall of the first oblong hole to facilitate the scraper plate to float back and forth.

[0012] Furthermore, the scraper plate is provided with scraper parts on both the left and right sides, and the scraper parts on both sides are in the shape of an "eight"; a clearance recess is provided in the middle of the scraper plate.

[0013] Furthermore, each of the two second positioning posts, front and rear, is provided with a clamping plate at its end via a second cotter pin screw.

[0014] Furthermore, the end of the second positioning post is provided with a second through hole for the second cotter pin screw to be inserted horizontally. The height of the second through hole is greater than the height of the second cotter pin screw, that is, a third gap is provided in the second through hole for the second cotter pin screw to move up and down.

[0015] Furthermore, the clamping plate is provided with a second threaded hole that mates with the second cotter pin screw, and a second oblong hole into which the end of the second positioning post extends. A fourth gap is formed between the front and rear sides of the second positioning post and the wall of the second oblong hole to facilitate the back-and-forth movement of the clamping plate.

[0016] Furthermore, both the first positioning post and the second positioning post are mounted on the movable plate via linear bearings. The movable plate is provided with a plurality of mounting holes for mounting the first positioning post and the second positioning post. A limit plate is provided at the top of the linear bearing. Screws are screwed onto the tops of both the first positioning post and the second positioning post, and the head end face of the screw abuts against the limit plate.

[0017] Compared with the prior art, the beneficial effects of the end clamping mechanism for tearing adhesive tape of this utility model are as follows:

[0018] (1) The scraper can float back and forth at a certain angle to adapt to photovoltaic modules with different degrees of curvature. The scraper can make contour contact with the surface of the photovoltaic module, which can solve the problem in the prior art that the scraper cuts the tape or scratches the surface of the module due to the different curvature of the photovoltaic module; The clamping plate can float back and forth at a certain angle to adapt to photovoltaic modules with different degrees of curvature. The clamping plate can make contour contact with the surface of the photovoltaic module, which can solve the problem that the surface of the photovoltaic module is damaged due to the different curvature of the photovoltaic module.

[0019] (2) The scraper is provided on both the left and right sides. The scraper on both sides is in the shape of an octagon or an inverted octagon. If the end of the tape is exposed on the outside of the photovoltaic module, the scraper will straighten the end of the tape. The scraper is provided on both the left and right sides, which can fit tightly with the end of the tape. This ensures that it can adapt to the ends of the tape in various warped states, and improves the reliability and effectiveness of straightening the end of the tape. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the end clamping mechanism for tearing adhesive tape according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the end clamping mechanism for tearing adhesive tape according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the end clamping mechanism for tearing adhesive tape according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the end clamping mechanism for tearing adhesive tape according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram showing the moving direction of the end clamping mechanism for tearing tape according to an embodiment of the present invention during operation;

[0025] The numbers in the diagram represent:

[0026] 100 - End clamping mechanism for tearing tape;

[0027] 1-Driver; 2-Moving board;

[0028] 3-Scraper module, 31-First positioning post, 32-Scraper plate, 321-Scraper part, 322-Relief recess, 33-First spring, 34-First cotter pin screw, 35-First oblong hole, 36-First threaded hole, 37-First through hole, 38-First gap, 39-Second gap;

[0029] 4-Clamping module, 41-Second positioning post, 42-Clamping plate, 43-Second spring, 44-Second cotter pin screw, 45-Second oblong hole, 46-Second threaded hole, 47-Second through hole, 48-Third gap, 49-Fourth gap;

[0030] 5-Linear bearing; 6-Limiting plate; 7-Screw. Detailed Implementation

[0031] Example 1:

[0032] Please refer to Figures 1-5This embodiment is an end-clamping mechanism 100 for tearing adhesive tape. The end-clamping mechanism 100 includes a driving member 1 and a pair of movable plates 2 driven by the driving member 1 to move closer or further apart from each other. Each movable plate 2 has a scraper module 3 for flattening the end of the tape and a clamping module 4 for clamping the flattened end of the tape on its opposite inner side. The scraper module 3 includes a first positioning post 31 disposed on the movable plate 2, a scraper plate 32 disposed at the end of the first positioning post 31, and a first spring 33 sleeved on the first positioning post 31 and located between the movable plate 2 and the scraper plate 32. That is, one end of the first spring 33 abuts against the surface of the movable plate 2 and the other end abuts against the surface of the scraper plate 32. The clamping module 4 includes a second positioning post 41 disposed on the movable plate 2, a clamping plate 42 disposed at the end of the second positioning post 41, and a second spring 43 sleeved on the second positioning post 41 and located between the movable plate 2 and the clamping plate 42. Specifically, one end of the second spring 43 abuts against the surface of the movable plate 2, and the other end abuts against the surface of the clamping plate 42. When the driving member 1 drives the movable plates 2 to move closer together, the inner surface of the movable plate 2 can compress the first spring 33 and the second spring 43, enabling the scraper plate 32 and the clamping plate 42 to elastically contact the surface of the photovoltaic module. This provides a vertically floating function, allowing for a tight fit with the photovoltaic module and improving the reliability and effectiveness of straightening the tape end. Both the scraper plate 32 and the clamping plate 42 can float back and forth to adapt to photovoltaic modules with different degrees of curvature, solving the problem in the prior art where different curvatures of photovoltaic modules cause the tape to break or scratch the module surface. In the initial position, the clamping plate 42 is either lower or higher than the scraper plate 32. If the clamping plate 42 and the scraper plate 32 are above the photovoltaic module, the clamping plate 42 is lower than the scraper plate 32. If the clamping plate 42 and the scraper plate 32 are below the photovoltaic module, the clamping plate 42 is higher than the scraper plate 32. That is, the clamping plate 42 is closer to the photovoltaic module than the scraper plate 32. This design is so that the clamping plate 42 can clamp the end of the tape more smoothly.

[0033] Each pair of first positioning posts 31 is connected to a scraper plate 32 via a first cotter pin screw 34 at its end. In this embodiment, each movable plate 2 has four first positioning posts 31, and each pair of first positioning posts 31 is connected to a scraper plate 32 at its end. The two scraper plates 32 are arranged in the left-right direction, are generally cuboid in shape, and extend in the front-back direction. The two scraper plates 32 scrape the tape twice, which can improve the success rate of scraping and ensure that the clamping module 4 can clamp the end of the tape smoothly. In other embodiments, the number of scraper plates 32 can be set according to the actual situation and is not limited here. The end of the first positioning post 31 is provided with a first through hole 37 for the first cotter pin screw 34 to be inserted horizontally. The height of the first through hole 37 is greater than the height of the first cotter pin screw 34, that is, the first through hole 37 is provided with a first gap 38 for the first cotter pin screw 34 to move up and down. The scraper plate 32 is provided with a first threaded hole 36 for mounting and engaging with the first cotter pin screw 34, and a first oblong hole 35 for the end of the first positioning post 31 to extend into. The scraper plate 32 and the first cotter pin screw 34 are fixedly connected by threads, and the first cotter pin screw 34 can move up and down within the first through hole 37. Each scraper plate 32 is respectively set at the end of the front and rear first positioning posts 31 by two first cotter pin screws 34. Each first cotter pin screw 34 can move up and down within the first through hole 37. When the height of the front and rear sides of the photovoltaic module is inconsistent, when the scraper plate 32 contacts the surface of the photovoltaic module, the two first cotter pin screws 34 will move to different heights, thereby causing the scraper plate 32 to float back and forth at a certain angle to adapt to photovoltaic modules with different degrees of curvature. The scraper plate 32 can make conformal contact with the surface of the photovoltaic module, which can solve the problem in the prior art that the scraper plate 32 cuts the tape or scratches the surface of the module due to the different curvature of the photovoltaic module. For example, when the outer side of the photovoltaic module is lower than the inner side, the front side of the scraper 32 is correspondingly lower than the rear side to adapt to the photovoltaic module. In this case, the first cotter pin screw 34 on the front side moves downward to a low position, and the first cotter pin screw 34 on the rear side moves upward to a high position. To facilitate the back-and-forth floating of the scraper 32, a second gap 39 is formed between the front and rear sides of the first positioning post 31 and the wall of the first oblong hole 35. That is, the front-and-back dimension of the first positioning post 31 is smaller than the front-and-back dimension of the first oblong hole 35, so that the scraper 32 can float back and forth. In this embodiment, the scraper 32 does not need to float left and right. Therefore, the left and right sides of the first positioning post 31 are flat and make contoured contact with the first oblong hole 35, which can limit the left and right floating of the scraper 32. Moreover, the left and right sides of the first positioning post 31 are set as flat surfaces, and the front and rear sides are set as curved surfaces, which can limit the rotation of the first positioning post 31 around the vertical axis.

[0034] In other embodiments, if the scraper plate 32 also needs to float in the left and right directions, the size of the first cotter pin screw 34 can be lengthened. Simultaneously, floating gaps are provided between the left and right sides of the first positioning post 31 and the left and right sides of the first oblong hole 35, enabling the scraper plate 32 to float left and right. A floating structure that allows the scraper plate 32 to float left and right can also be provided according to actual conditions; this is not limited here.

[0035] The scraper plate 32 has scraper sections 321 on both its left and right sides. These scraper sections 321 are either V-shaped or inverted V-shaped. The scraper plate 32 located above the photovoltaic module has V-shaped scraper sections 321 on both sides, while the scraper plate 32 located below the photovoltaic module has inverted V-shaped scraper sections 321 on both sides. If the tape end protrudes outside the photovoltaic module, the scraper plate 32 straightens the tape end. The scraper sections 321 on both sides of the scraper plate 32 can fit tightly against the tape end, ensuring adaptability to tape ends with various warping states and improving the reliability and effectiveness of tape end straightening. If the tape end is attached to the photovoltaic module, the scraper section 321 on one side of the scraper plate 32 can scrape the tape end off the photovoltaic module.

[0036] The scraper plate 32 has a relief recess 322 in the middle. The relief recess 322 can reduce the contact area between the scraper plate 32 and the photovoltaic module, thereby ensuring that the scraper part 321 of the scraper plate 322 can fit tightly with the surface of the photovoltaic module and improve the scraping effect.

[0037] Each pair of front and rear second positioning posts 41 are connected at their ends by a clamping plate 42 via a second cotter pin screw 44. In this embodiment, each movable plate 2 has two second positioning posts 41, and the ends of the two front and rear second positioning posts 41 are connected by a clamping plate 42. The clamping plate 42 is generally rectangular and extends in the front-rear direction. The clamping plate 42 is used to clamp the end of the tape. The end of the second positioning post 41 is provided with a second through hole 47 for the second cotter pin screw 44 to be inserted horizontally. The height of the second through hole 47 is greater than the height of the second cotter pin screw 44, that is, the second through hole 47 is provided with a third gap 48 for the second cotter pin screw 44 to move up and down. The clamping plate 42 is provided with a second threaded hole 46 for mounting and cooperating with the second cotter pin screw 44, and a second oblong hole 45 for the end of the second positioning post 41 to extend into. The clamping plate 42 and the second cotter pin screw 44 are fixedly connected by threads, and the second cotter pin screw 44 can move up and down within the second through hole 47. The clamping plate 42 is respectively mounted on the ends of the front and rear second positioning posts 41 by two second cotter pins 44. Each second cotter pin 44 can move up and down in the second through hole 47. When the heights of the front and rear sides of the photovoltaic module are inconsistent, when the clamping plate 42 contacts the surface of the photovoltaic module, the two second cotter pins 44 will move to different heights, thereby causing the clamping plate 42 to float back and forth at a certain angle to adapt to photovoltaic modules with different degrees of curvature. The clamping plate 42 can make conformal contact with the surface of the photovoltaic module, which can solve the problem of damaging the surface of the photovoltaic module due to different curvatures. For example, when the outer side of the photovoltaic module is lower and the inner side is higher, the clamping plate 42 is correspondingly lower on the front side and higher on the rear side to adapt to the photovoltaic module. At this time, the second cotter pin 44 on the front side moves downward to a low position and the second cotter pin 44 on the rear side moves upward to a high position. To facilitate the forward and backward floating of the clamping plate 42, a fourth gap 49 is formed between the front and rear sides of the second positioning post 41 and the wall of the second oblong hole 45. That is, the front-back dimension of the second positioning post 41 is smaller than the front-back dimension of the second oblong hole 45, so that the clamping plate 42 can float forward and backward. In this embodiment, the clamping plate 42 does not need to float left and right. Therefore, the left and right sides of the second positioning post 41 are flat and make contoured contact with the second oblong hole 45, which can limit the left and right floating of the clamping plate 42. Moreover, the left and right sides of the second positioning post 41 are set as flat surfaces and the front and rear sides are set as curved surfaces, which can limit the rotation of the second positioning post 41 around the vertical axis.

[0038] In other embodiments, if the clamping plate 42 also needs to float in the left and right directions, the size of the second cotter pin screw 44 can be lengthened. Simultaneously, floating gaps are also provided between the left and right sides of the second positioning post 41 and the left and right sides of the second oblong hole 45, enabling the clamping plate 42 to float left and right. A floating structure that allows the clamping plate 42 to float left and right can also be provided according to actual conditions; this is not limited here.

[0039] The first positioning post 31 and the second positioning post 41 are both mounted on the movable plate 2 via linear bearings 5. The movable plate 2 has several mounting holes for mounting the first positioning post 31 and the second positioning post 41. The linear bearings 5 ​​are sleeved on the outer periphery of the first positioning post 31 and the second positioning post 41 and located in the mounting holes. A limit piece 6 is provided at the top of the linear bearing 5. Screws 7 are screwed onto the top of the first positioning post 31 and the second positioning post 41. The head end face of the screw 7 abuts against the limit piece 6. The limit piece 6 and the screw 7 work together to restrict the downward movement of the first positioning post 31 and the second positioning post 41.

[0040] In this embodiment, the driving component 1 is a gripper cylinder. A pair of movable plates 2 are respectively fixed on the two grippers of the gripper cylinder. The gripper cylinder drives the pair of movable plates 2 to move closer or further apart. Each movable plate 2 is provided with a scraper module 3 and a clamping module 4. One driving component 1 can drive the scraper module 3 and the clamping module 4 to work at the same time, which can improve the working cycle and increase production efficiency. During operation, the two opposing movable plates 2 are located on the upper and lower sides of the photovoltaic module, respectively. At the same time, the scraper module 3 and clamping module 4 on the upper movable plate 2 are located on the upper side of the photovoltaic module, and the scraper module 3 and clamping module 4 on the lower movable plate 2 are located on the lower side of the photovoltaic module. The upper and lower scraper modules 3 and clamping modules 4 are arranged opposite each other. When the end of the tape is folded to the upper or lower surface of the photovoltaic module, the scraper module 3 can flatten it and ensure that the clamping module 4 can smoothly clamp the end of the tape, which facilitates the subsequent tape tearing operation and improves production efficiency.

[0041] In other embodiments, the driving element 1 can drive the moving plates 2 to move closer or further apart, and other driving structures can be configured, which are not limited here.

[0042] When using the tape-tearing end clamping mechanism 100 provided in this solution, after the photovoltaic module is delivered to its position and its four sides are aligned, a linear drive (not shown in the figure) drives the tape-tearing end clamping mechanism 100 to move to the corner of the photovoltaic module. The drive unit 1 is located outside the photovoltaic module, and the scraper module 3 and clamping module 4 are located on one side of the photovoltaic module. The upper moving plate 2 is located above the photovoltaic module, and the lower moving plate 2 is located below the photovoltaic module. The scraper module 3 and clamping module 4 on the upper moving plate 2 face the photovoltaic module, and the scraper module 3 and clamping module 4 on the lower moving plate 2 also face the photovoltaic module. The drive unit 1 drives the pair of moving plates 2 to move closer to each other. The inner surface of the moving plate 2 can compress the first spring 33 and the second spring 43, enabling... The scraper plate 32 and clamping plate 42 elastically contact the surface of the photovoltaic module, closely adhering to the surface of the photovoltaic module. The linear drive (not shown in the figure) drives the end clamping mechanism 100 for tearing tape to move outward of the photovoltaic module. If the end of the tape is exposed on the outside of the photovoltaic module, the scraper plate 32 straightens the end of the tape. If the end of the tape is stuck to the photovoltaic module, the scraper part 321 on one side of the scraper plate 32 can scrape the end of the tape off the photovoltaic module. After the linear drive (not shown in the figure) drives the end clamping mechanism 100 for tearing tape to move away from the photovoltaic module, the first spring 33 and the second spring 43 are compressed and stretched. The clamping plates 42 on the upper and lower sides clamp the end of the tape, making it easier for the tape tearing device (not shown in the figure) to tear off the tape.

[0043] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A tip holding mechanism for tearing adhesive tape, characterized by: It includes a driving member and a pair of moving plates driven by the driving member to move closer to or away from each other, the moving plates are provided with a scraper module for scraping the end of the adhesive tape and a clamping module for clamping the scraped end of the adhesive tape on the opposite inner side; the scraper module includes a first positioning column provided on the moving plate, a scraper plate provided at the end of the first positioning column in front and back, and a first spring provided on the first positioning column and located between the moving plate and the scraper plate; the clamping module includes a second positioning column provided on the moving plate, a clamping plate provided at the end of the second positioning column in front and back, and a second spring provided on the second positioning column and located between the moving plate and the clamping plate.

2. A tip holder mechanism for tearing adhesive tape as defined in claim 1, characterized in that: The end of each of the first positioning columns is provided with a first split pin screw, and one scraper plate is provided at the end of each of the first positioning columns.

3. A tip holder mechanism for tearing adhesive tape as defined in claim 2, characterized in that: The end of the first positioning column is provided with a first through hole for horizontal insertion of the first split pin screw, and the height of the first through hole is greater than the height of the first split pin screw, that is, the first through hole is provided with a first gap for upward and downward movement of the first split pin screw.

4. A tip holder mechanism for tearing adhesive tape as defined in claim 2, characterized in that: The scraper plate is provided with a first threaded hole matched with the first split pin screw and a first waist-shaped hole for insertion of the end of the first positioning column, and a second gap is formed between the front and back sides of the first positioning column and the hole wall of the first waist-shaped hole to facilitate the front and back floating of the scraper plate.

5. A tip holder mechanism for tearing adhesive tape as defined in claim 1, characterized in that: The left and right sides of the scraper plate are provided with scraper parts, and the scraper parts on both sides are in an eight-shaped structure.

6. A tip holder mechanism for tearing adhesive tape as defined in claim 1, characterized in that: The end of each of the second positioning columns is provided with a second split pin screw, and one clamping plate is provided at the end of each of the second positioning columns.

7. A tip holder mechanism for a tape tearing device as defined in claim 6, characterized in that: The end of the second positioning column is provided with a second through hole for horizontal insertion of the second split pin screw, and the height of the second through hole is greater than the height of the second split pin screw, that is, the second through hole is provided with a third gap for upward and downward movement of the second split pin screw.

8. A tip holder mechanism for a tape tearing device as defined in claim 6, characterized in that: The clamping plate is provided with a second threaded hole matched with the second split pin screw and a second waist-shaped hole for insertion of the end of the second positioning column, and a fourth gap is formed between the front and back sides of the second positioning column and the hole wall of the second waist-shaped hole to facilitate the front and back floating of the clamping plate.

9. A tip holder mechanism for a tape tearing device as defined in claim 1, characterized in that: The first positioning column and the second positioning column are provided on the moving plate through a linear bearing, the moving plate is provided with a plurality of mounting holes for mounting the first positioning column and the second positioning column, the top end of the linear bearing is provided with a limiting piece, and the top end of the first positioning column and the second positioning column is screwed with a screw, and the head end surface of the screw abuts against the limiting piece.

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