Automatic tape splicing device

Abstract

The utility model relates to an automatic band connecting device, including first turnover subassembly and second turnover subassembly, first turnover subassembly sets up in first band connecting position, second turnover subassembly sets up in second band connecting position, and first band connecting position and second band connecting position all are provided with cutting knife, and the cutting knife of first band connecting position is along the first material tape's tape path with the first turnover board of first turnover subassembly setting, and the cutting knife of second band connecting position is along the second material tape's tape path with the second turnover board of second turnover subassembly setting, and first turnover board and second turnover board have the same turnover center, when connecting the band, the cutting knife of first band connecting position cuts off first material tape, and first turnover board turns over first material tape after cutting to second turnover board, and through double -sided adhesive tape, the tail of first material tape is pasted and fixed with the head of second material tape on second turnover board, the utility model discloses simple structure, and the band connecting stability is higher, and the band connecting efficiency is higher, and the convenience of installation debugging maintenance has been increased.

Description

Technical Field

[0001] This utility model relates to the field of tape splicing technology, and in particular to an automatic tape splicing device. Background Technology

[0002] Currently, the efficiency of wafer stacking machines is developing rapidly. Taking a 390mm wide diaphragm machine as an example, the mainstream product in 2022 had a single-sheet stacking efficiency of 0.6 seconds per sheet, with an auxiliary time of 10 seconds. Assuming a cell width of 130mm and 105 layers, the efficiency of a single-sheet stacked cell is 60 seconds / (0.6 seconds * 105 layers + 10 seconds) = 0.82 ppm. Assuming a roll of diaphragm is 2000 meters long, it can be used for 2000 * 1000 / (0.82 * 105 * 130) = 178 minutes. However, the fastest wafer stacking machine currently available has an efficiency of 0.3 seconds per sheet, with an auxiliary time of 7 seconds. In this case, the efficiency of a single-sheet stacked cell is 60 seconds / (0.3 seconds * 105 layers + 7 seconds) = 1.56 ppm, and a roll of diaphragm can only be used for 2000 * 1000 / (1.56 * 105 * 130) = 94 minutes, doubling the roll change frequency. The existing diaphragm splicing structure is relatively complex, and the splicing efficiency needs to be improved, which cannot meet the production efficiency requirements of the existing stacking machine. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an automatic belt splicing device.

[0004] This utility model provides an automatic tape-connecting device, including a first flipping component and a second flipping component. The first flipping component is disposed at a first tape-connecting position, and the second flipping component is disposed at a second tape-connecting position. Both the first tape-connecting position and the second tape-connecting position are provided with cutters. The cutter at the first tape-connecting position and the first flipping plate of the first flipping component are disposed along the tape-carrying path of the first tape. The cutter at the second tape-connecting position and the second flipping plate of the second flipping component are disposed along the tape-carrying path of the second tape. The first flipping plate and the second flipping plate have the same flipping center.

[0005] During the tape splicing process, the cutter at the first splicing position cuts the first tape, the first flipping plate flips the cut first tape onto the second flipping plate, and double-sided adhesive is used to attach and fix the tail of the first tape to the head of the second tape on the second flipping plate; or, the cutter at the second splicing position cuts the second tape, the second flipping plate flips the cut second tape onto the first flipping plate, and double-sided adhesive is used to attach and fix the tail of the second tape to the head of the first tape on the first flipping plate.

[0006] In some embodiments, the first receiving position is provided with a first support platform and a first clamping plate, the first support platform and the first clamping plate are located on both sides in the thickness direction of the first strip, the cutter at the first receiving position is located on the side of the first strip close to the first clamping plate, and the cutter at the first receiving position is located toward the gap between the first support platform and the first flipping plate.

[0007] In some embodiments, the second receiving position is provided with a second support platform and a second clamping plate, the second support platform and the second clamping plate are located on both sides of the thickness direction of the second strip, the cutter at the second receiving position is located on the side of the second strip close to the second clamping plate, and the cutter at the second receiving position is positioned toward the gap between the second support platform and the second flipping plate.

[0008] In some embodiments, the flipping center is located at the intersection of the first conveyor belt path and the second conveyor belt path.

[0009] In some embodiments, the first flipping assembly further includes a first flipping roller, which is arranged parallel to the first flipping plate on the side near the flipping center, and the first material strip is pulled to the main conveyor path by the first flipping roller.

[0010] In some embodiments, the second flipping assembly further includes a second flipping roller, which is arranged parallel to the second flipping plate on the side near the flipping center, and the second strip is pulled to the main conveyor path through the second flipping roller.

[0011] In some embodiments, the first and second flip plates are both adsorption plates connected to an external air source, and each adsorption plate has only one adsorption surface.

[0012] In some embodiments, the flip angles of the first and second flip plates are both ≥45 degrees and ≤315 degrees.

[0013] In some embodiments, the first and second flip plates are both flipped at an angle of 180 degrees.

[0014] Compared with the prior art, the advantages of this utility model are: 1. The adsorption plate is only set with one adsorption surface and one vacuum cavity, which reduces the design and processing costs and the vacuum energy consumption; the whole assembly uses fewer parts and does not use the high-precision and high-rigidity guide structure required in the traditional tape structure, which reduces the manufacturing cost. 2. The splicing stability is higher, especially for material belts with a larger width. The operation process is simple, and the splicing can be completed in only 4 steps, which is more efficient. Traditional splicing structures require at least 6 steps to complete the splicing. 3. Compared with traditional connector structures, the structure is simpler, which greatly increases the convenience of installation, debugging and maintenance, and also improves personnel safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the layout structure of the automatic tape-attaching device in the stacking machine according to an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the structure of the automatic tape-attaching device before tape attachment according to an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the tape-connecting structure of the automatic tape-connecting device according to an embodiment of this application.

[0018] Reference numerals: 101, stacking machine; 102, protective door; 103, automatic tape receiving device; 104, double-sided adhesive; 1. First flipping assembly; 11. First flipping plate; 12. First flipping roller; 2. Second flipping assembly; 21. Second flipping plate; 22. Second flipping roller; 3. First connecting point; 31. First support platform; 32. First clamping plate; 4. Second connecting strip position; 41. Second support platform; 42. Second clamping plate; 5. Cutting knife; 6. Flip the center; 7. Diaphragm A material roll; 71. First material strip; 8. Diaphragm B material roll; 81. Second material strip; 9. Main conveyor path; 91. Third clamping plate; 92. Material roller. Detailed Implementation

[0019] The specific embodiments of this utility model are described with reference to the accompanying drawings.

[0020] refer to Figure 1An automatic tape-connecting device 103 is installed on the upper left side of the stacking machine 101, near the protective door 102, to facilitate operations such as opening the door for material replacement, debugging, and maintenance. It includes a first flipping component 1 and a second flipping component 2. The first flipping component 1 is located at the first tape-connecting position 3, corresponding to the diaphragm A material roll 7, which feeds the first tape 71 to the first tape-connecting position 3. The second flipping component 2 is located at the second tape-connecting position 4, corresponding to the diaphragm B material roll 8, which feeds the second tape 71 to the second tape-connecting position 4. Cutters 5 are provided at both the first connecting position 3 and the second connecting position 4 of the material belt 81. The cutter 5 at the first connecting position 3 and the first flipping plate 11 of the first flipping assembly 1 are arranged along the conveying path of the first material belt 71. The cutter 5 at the second connecting position 4 and the second flipping plate 21 of the second flipping assembly 2 are arranged along the conveying path of the second material belt 81. In this embodiment, the first flipping plate 11 and the second flipping plate 21 have the same flipping center 6, and the flipping angle of the first flipping plate 11 and the second flipping plate 21 is 180 degrees.

[0021] The first flip plate 11 and the second flip plate 21 are both adsorption plates with an external air source. Each adsorption plate has only one adsorption surface and a vacuum chamber inside. The vacuum chamber and the adsorption surface of the adsorption plate work together to adsorb the material strip. Both the first flip plate 11 and the second flip plate 21 adsorb the diaphragm through vacuum. When the first material strip 71 is used as the old diaphragm material strip and the second material strip 81 is used as the new diaphragm material strip for splicing, the second flip plate 21 adsorbs the head of the second material strip 81 through vacuum. The side of the head of the second material strip 81 facing away from the second flip plate 21 is covered with double-sided tape 104. The cutter 5 at the first splicing position 3 cuts the first material strip 71. The first flip plate 11 flips the cut first material strip 71 180 degrees and then transfers it to the second flip plate 21. The tail of the first material strip 71 is then attached and fixed to the head of the second material strip 81 on the second flip plate 21 with double-sided tape 104.

[0022] When the second tape 81 is used as the old diaphragm tape and the first tape 71 is used as the new diaphragm tape for splicing, the first flip plate 11 vacuum-adsorbs the head of the first tape 71. Double-sided tape 104 is attached to the side of the head of the first tape 71 away from the first flip plate 11. The cutter 5 at the second splicing position 4 cuts the second tape 81. The second flip plate 21 flips the cut second tape 81 180 degrees and then transfers it to the first flip plate 11. The tail of the second tape 81 is then attached and fixed to the head of the first tape 71 on the first flip plate 11 using double-sided tape 104.

[0023] refer to Figure 2 and Figure 3In some embodiments, the first receiving position 3 is provided with a first support platform 31 and a first clamping plate 32, which are located on opposite sides of the thickness direction of the first strip 71. The cutter 5 of the first receiving position 3 is located on the side of the first strip 71 near the first clamping plate 32, and the cutter 5 of the first receiving position 3 is positioned towards the gap between the first support platform 31 and the first flipping plate 11. The second receiving position 4 is provided with a second support platform 41 and a second clamping plate 42, which are located on opposite sides of the thickness direction of the second strip 81. The cutter 5 of the second receiving position 4 is located on the side of the second strip 81 near the second clamping plate 42, and the cutter 5 of the second receiving position 4 is positioned towards the gap between the second support platform 41 and the second flipping plate 21.

[0024] It should be noted that the first support platform 31 and the second support platform 41 are both fixed on the back plate of the machine tool. The first clamping plate 32 and the second clamping plate 42 can be driven by a cylinder or a motor to move the first clamping plate 32 and the second clamping plate 42 relative to the first support platform 31 and the second support platform 41 respectively, so as to clamp the first material strip 71 and the second material strip 81.

[0025] refer to Figure 2 and Figure 3 In some embodiments, the flipping center 6 is located at the intersection of the first material belt 71's travel path and the second material belt 81's travel path. The first flipping assembly 1 also includes a first flipping roller 12, which is arranged parallel to the first flipping plate 11 near the flipping center 6. The first material belt 71 is pulled to the main travel path 9 by the first flipping roller 12. The second flipping assembly 2 also includes a second flipping roller 22, which is arranged parallel to the second flipping plate 21 near the flipping center 6. The second material belt 81 is pulled to the main travel path 9 by the second flipping roller 22.

[0026] It should be further explained that the first flipping plate 11 and the second flipping roller 22 can be set on the same flipping frame (not shown in the figure), and the second flipping plate 21 and the second flipping roller 22 can be set on another flipping frame. The two flipping frames are driven by a motor or cylinder and rotate around the same flipping center 6. Those skilled in the art can easily understand and implement this, so it will not be described in detail here.

[0027] refer to Figure 2 and Figure 3 There is a third clamping plate 91 and a material roller 92 on the main conveyor path 9. The third clamping plate 91 is driven by a cylinder. The cylinder drives the third clamping plate 91 to move relative to the material roller 92. Before the belt is spliced, the material belt on the main conveyor path 9 is clamped to maintain the tension of the old material belt. After the belt splicing is completed, the material belt on the main conveyor path 9 is released to allow the material belt to work normally.

[0028] In some embodiments, the flip angles of the first flip plate 11 and the second flip plate 21 are both ≥45 degrees and ≤315 degrees, such as 45 degrees, 60 degrees, 90 degrees, 120 degrees, 150 degrees, 180 degrees, 210 degrees, 270 degrees, 315 degrees, etc., as long as there is enough space for the first flip component 1 and the second flip component 2 to be set, and it does not have to be 180 degrees as in the above embodiments.

[0029] Working process: When the diaphragm B material roll 8 is the preparation roll, the second material strip 81 is manually threaded onto the second flip plate 21 of the second flip assembly 2. The second flip plate 21 vacuum-suctions the head of the second material strip 81. The second support platform 41 and the second clamping plate 42 assist in pressing the second material strip 81, and double-sided tape 104 is attached to the head of the second material strip 81. When the diaphragm A roll 7 is used up, the first support platform 31 and the first clamping plate 32 press down on the first material strip 71. At the same time, the first flipping plate 11 sucks up the head of the first material strip 71, and the cutter 5 at the first tape-connecting position 3 cuts the first material strip 71. The first flipping plate 11 drives the first material strip 71 to flip 180 degrees along the flipping center 6, so that the tail of the first material strip 71 is bonded to the double-sided adhesive 104 at the head of the second material strip 81. The second support platform 41 and the second clamping plate 42 release the second material strip 81, the first flipping plate 11 flips back to its original position, and the second flipping plate 21 releases its suction on the second material strip 81. The diaphragm B roll 8 can then be used as a working roll for production. The operation process is quite simple. During the production process, the diaphragm A roll 7 is replaced and a new diaphragm roll is installed without affecting the production of the equipment.

[0030] The automatic tape-jointing device 103 of this utility model can well meet the production needs of the existing stacking machine 101. The tape-jointing structure is simple and the tape-jointing efficiency is high and stable.

[0031] It should be noted that the embodiments of this application are described using the diaphragm splicing of the stacking machine 101, but the protection scope of this utility model is not limited to the diaphragm splicing. Strip materials such as electrode sheets and adhesive tapes made according to the principle of this utility model are all within the protection scope. The machine model is not limited to the stacking machine 101. Equipment related to lithium batteries or other industries are all within the protection scope.

[0032] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. An automatic tape-connecting device, characterized in that, It includes a first flipping component and a second flipping component. The first flipping component is located at a first tape receiving position, and the second flipping component is located at a second tape receiving position. Both the first tape receiving position and the second tape receiving position are provided with cutters. The cutter at the first tape receiving position and the first flipping plate of the first flipping component are arranged along the tape travel path of the first material belt, and the cutter at the second tape receiving position and the second flipping plate of the second flipping component are arranged along the tape travel path of the second material belt. The first flipping plate and the second flipping plate have the same flipping center. During the tape splicing process, the cutter at the first splicing position cuts the first tape, the first flipping plate flips the cut first tape onto the second flipping plate, and double-sided adhesive is used to attach and fix the tail of the first tape to the head of the second tape on the second flipping plate; or, the cutter at the second splicing position cuts the second tape, the second flipping plate flips the cut second tape onto the first flipping plate, and double-sided adhesive is used to attach and fix the tail of the second tape to the head of the first tape on the first flipping plate.

2. The automatic tape-connecting device according to claim 1, characterized in that, The first receiving position is provided with a first support platform and a first clamping plate. The first support platform and the first clamping plate are located on both sides of the thickness direction of the first material strip. The cutter at the first receiving position is located on the side of the first material strip close to the first clamping plate. The cutter at the first receiving position is positioned towards the gap between the first support platform and the first flipping plate.

3. The automatic tape-connecting device according to claim 1, characterized in that, The second receiving position is provided with a second support platform and a second clamping plate. The second support platform and the second clamping plate are located on both sides of the thickness direction of the second material strip. The cutter at the second receiving position is located on the side of the second material strip close to the second clamping plate. The cutter at the second receiving position is positioned towards the gap between the second support platform and the second flipping plate.

4. The automatic tape-connecting device according to claim 1, characterized in that, The flipping center is located at the intersection of the first material conveyor belt path and the second material conveyor belt path.

5. The automatic tape-connecting device according to claim 1, characterized in that, The first flipping assembly further includes a first flipping roller, which is arranged parallel to the first flipping plate on the side near the flipping center. The first material belt is pulled to the main conveyor path through the first flipping roller.

6. The automatic tape-connecting device according to claim 1, characterized in that, The second flipping assembly also includes a second flipping roller, which is arranged parallel to the second flipping plate on the side near the flipping center. The second material strip is pulled to the main conveyor path through the second flipping roller.

7. The automatic tape-connecting device according to claim 1, characterized in that, Both the first and second flip plates are adsorption plates connected to an external air source, and each adsorption plate has only one adsorption surface.

8. The automatic tape-connecting device according to claim 1, characterized in that, The flipping angles of the first and second flipping plates are both ≥45 degrees and ≤315 degrees.

9. The automatic tape-connecting device according to claim 8, characterized in that, The first and second flip plates both have a flip angle of 180 degrees.

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