Automatic tape splicing device

Abstract

The utility model relates to an automatic belt splicing device, comprising a base; a belt splicing mechanism, comprising a first suction plate seat and a second suction plate seat relatively arranged on the base, a gap for a pole piece to pass through is arranged between the first suction plate seat and the second suction plate seat, the first suction plate seat and the second suction plate seat are arranged to be able to approach or move away from each other, the first suction plate seat is provided with a cutter accommodating gap, and the second suction plate seat is provided with a cutter avoidance groove opposite to the cutter accommodating gap; a cutting mechanism, arranged on the base, comprising a first driving member and a cutter connected to the first driving member, the cutter is penetrated in the cutter accommodating gap, the first driving member drives the cutter to penetrate the cutter accommodating gap and extend to the cutter avoidance groove, or retract into the cutter accommodating gap; the cutter of the utility model can actively extend the suction plate, which is convenient for controlling the cutter stroke and can effectively improve the cutting accuracy of the cutter.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to an automatic belt splicing device. Background Art

[0002] In the production process of lithium batteries, lithium battery winding equipment is needed to wind the positive electrode sheet, negative electrode sheet and diaphragm material of the battery into a battery cell by continuous rotation. When a roll of electrode sheet material is about to be used up, it is generally necessary to use an automatic splicing mechanism to complete the roll change. The existing automatic material change and splicing mechanism usually sets a buffer structure at the connection between the two splicing suction cups and the base to buffer the splicing suction cups. This makes it difficult to control the cutting accuracy of the cutter to a certain extent, and the cutting accuracy needs to be improved. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the passive extension of the cutter makes it difficult to control the cutting accuracy of the cutter, and further provide an automatic tape splicing device, in which the cutter can actively extend out of the suction plate seat, which is convenient for controlling the cutter stroke and can effectively improve the cutting accuracy of the cutter.

[0004] In order to solve the above technical problems, the utility model provides an automatic belt splicing device, comprising:

[0005] Pedestal;

[0006] The belt connection mechanism comprises a first suction plate seat and a second suction plate seat which are arranged on the base relatively to each other, a gap for the pole piece to pass through is arranged between the first suction plate seat and the second suction plate seat, the first suction plate seat and the second suction plate seat are arranged to be able to approach or move away from each other, the first suction plate seat is provided with a cutter accommodating gap, and the second suction plate seat is provided with a cutter avoidance groove facing the cutter accommodating gap;

[0007] The cutting mechanism is arranged on the base, and includes a first driving member and a cutter connected to the first driving member. The cutter is inserted into the cutter accommodating gap. The first driving member drives the cutter to pass through the cutter accommodating gap and extend to the cutter avoidance groove, or retract into the cutter accommodating gap.

[0008] In one embodiment of the present utility model, the belt connecting device further comprises a guide rail arranged on the base, the guide rail extends along the thickness direction of the pole piece, and the first suction plate seat and the second suction plate seat slide along the guide rail.

[0009] In one embodiment of the utility model, the belt connecting device also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are slidably connected to the guide rail, the first suction plate seat and the second suction plate seat are respectively installed on the first mounting plate and the second mounting plate, and the cutting mechanism is arranged on the first mounting plate.

[0010] In one embodiment of the utility model, it further includes a first driving mechanism, which includes two first drivers arranged on the base, and the two first drivers respectively drive the first mounting plate and the second mounting plate to move closer to or away from each other.

[0011] In one embodiment of the utility model, it also includes a second driving mechanism, which includes two second drivers, and the two second drivers are respectively arranged on the first mounting plate and the second mounting plate, and the two second drivers respectively drive the first suction plate seat and the second suction plate seat to flip relative to each other.

[0012] In one embodiment of the utility model, it also includes a third driving mechanism arranged on the second mounting plate, the third driving mechanism is connected to the second suction plate seat, and drives the second suction plate seat to approach or move away from the first suction plate seat.

[0013] In one embodiment of the utility model, the automatic tape splicing device further comprises an unwinding mechanism for placing the pole piece roll and a fixing adjustment mechanism for fixing the pole piece, and the tape splicing mechanism is arranged between the fixing adjustment mechanism and the unwinding mechanism.

[0014] In one embodiment of the present invention, the first suction plate seat and the second suction plate seat are both provided with a first suction surface and a second suction surface perpendicular to each other, and the first suction surface is arranged between the first suction plate seat and the second suction plate seat.

[0015] In one embodiment of the present invention, the first adsorption surfaces include two independently controllable pole piece adsorption surfaces.

[0016] In one embodiment of the utility model, the cutter accommodating gap is located between the two pole piece adsorption surfaces of the first suction plate seat, and the cutter avoidance groove is located between the two pole piece adsorption surfaces of the second suction plate seat.

[0017] The above technical solution of the utility model has the following advantages compared with the prior art:

[0018] The cutter of the automatic tape splicing device described in the utility model can be driven to actively extend out of the first suction plate seat to cut off the pole piece, and the timing of the cutter extending out of the first suction plate seat can be controlled, thereby controlling the timing of the cutter cutting the material tape; the cutter can actively extend out of the first suction plate seat, which is convenient for controlling the cutter stroke and can effectively improve the cutting accuracy of the cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0020] Figure 1 It is a structural schematic diagram of the automatic tape splicing device in the preferred embodiment of the utility model.

[0021] Figure 2 for Figure 1 The structural schematic diagram of the front view of the automatic tape splicing device shown.

[0022] Figure 3 for Figure 1 Another structural schematic diagram of the automatic tape splicing device shown.

[0023] Figure 4 for Figure 1 The structure schematic diagram of the first waste collecting shaft and the second waste collecting shaft of the automatic tape splicing device is shown.

[0024] Figure 5 for Figure 1 The structural schematic diagram of the second suction plate seat of the automatic tape splicing device is shown.

[0025] Explanation of the reference numerals in the specification: 1. base; 21. first suction plate seat; 22. second suction plate seat; 211. cutter accommodating gap; 222. cutter avoidance groove; 223. adsorption hole; 31. first mounting plate; 32. second mounting plate; 41. first guide roller; 42. second guide roller; 5. fixed adjustment mechanism; 51. first waste collecting shaft; 52. second waste collecting shaft; 53. slotting; 6. first driver; 7. gap; 81. first adsorption surface; 811. first pole piece adsorption surface; 812. second pole piece adsorption surface; 82. second adsorption surface; 9. cutting mechanism; 91. slide rail; 92. second driver; 10. tape connecting mechanism; 11. cutter; 12. first driver; 13. third driver; 71. second driver; 61. first unwinding mechanism; 62. second unwinding mechanism. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] Example

[0028] In one embodiment of the present invention, referring to Figure 1As shown, the automatic tape splicing device includes an unwinding mechanism, a tape splicing mechanism 10, a fixed adjustment mechanism 5, and a cutting mechanism 9; the cutting mechanism 9 and the tape splicing mechanism 10 are arranged between the unwinding mechanism and the fixed adjustment mechanism 5, the unwinding mechanism is used to place the pole piece tape (material roll), and the unwinding mechanism is divided into a first unwinding mechanism and a spare second unwinding mechanism; the cutting mechanism 9 is used to cut the overlapping new pole piece tape and the old pole piece tape, so that the initial end of the new pole piece tape and the end of the old pole piece tape are aligned for easy splicing, the new pole piece tape refers to the spare tape, and the old pole piece tape refers to the tape on the production line, and the tape splicing mechanism 10 also includes

[0029] Base 1;

[0030] A first suction plate seat 21 and a second suction plate seat 22 are relatively arranged on the base 1, and the first suction plate seat 21 and the second suction plate seat 22 are used to fix the electrode material strip and the adsorption tape; a gap 7 is provided between the first suction plate seat 21 and the second suction plate seat 22, and the new electrode material strip passes through the gap 7 after coming out of the unwinding mechanism and moves to the production line. When it is necessary to splice the strips, the first suction plate seat 21 and the second suction plate seat 22 are configured to be able to approach each other and press the new electrode material roll and the old electrode material roll, and then move away from each other after the splicing is completed. The first suction plate seat 21 is provided with a cutter accommodating gap 211, and the second suction plate seat 22 is provided with a cutter avoidance groove 222 opposite to the cutter accommodating gap 211.

[0031] The cutting mechanism 9 is disposed on the base 1 , and includes a first driving member 12 and a cutter 11 disposed at an output end of the first driving member 12 . The first driving member 12 is preferably a cylinder. The cutter 11 is inserted into the cutter accommodating gap 211, and the cutter 11 extends along the length direction of the cutter accommodating gap 211. When the first suction plate seat 21 and the second suction plate seat 22 fix the new pole piece material strip and the old pole piece material strip, the first driving member 12 drives the cutter 11 to pass through the cutter accommodating gap 211 and the gap 7 to extend into the cutter avoidance groove 222 to cut the overlapping part of the new pole piece material roll and the old pole piece material roll, ensuring that the new pole piece material roll and the old pole piece material roll are aligned for easy splicing. The cutter 11 can actively extend out of the first suction plate seat 21, which is convenient for controlling the cutter stroke and can effectively improve the cutting accuracy of the cutter; after cutting, it shrinks to the cutter accommodating gap 211, and the cutter avoidance groove 222 is used to avoid the blade of the cutter 11 to prevent the cutter 11 from being blunted.

[0032] In one embodiment of the present invention, in order to improve cutting accuracy, the tape connection mechanism 10 includes a guide rail arranged on the base 1, the guide rail extends along the thickness direction of the pole piece, and the first suction plate seat 21 and the second suction plate seat 22 slide along the guide rail.

[0033] In one embodiment of the present invention, referring to Figure 2As shown, in order to improve the structural stability of the first suction plate seat 21 and the second suction plate seat 22, the belt connecting mechanism 10 also includes a first mounting plate 31 and a second mounting plate 32, the first mounting plate 31 and the second mounting plate 32 are slidably mounted on the guide rail, and the first suction plate seat 21 and the second suction plate seat 22 are respectively mounted on the first mounting plate 31 and the second mounting plate 32; the cutting mechanism 9 is arranged on the first mounting plate 31.

[0034] In one embodiment of the present invention, referring to Figure 1 , Figure 2 As shown, in order to ensure the smooth and accurate cutting of the cutter 11, the cutting mechanism 9 also includes a slide rail 91 that guides the cutter 11 and a second drive member 92 that drives the cutter for a second time. The slide rail extends along the cutting direction of the cutter 11, and the cutter 11 is slidably arranged on the slide rail 91. The second drive member 92 is preferably a cylinder. At this time, the first drive member 12 drives the cutter to approach the pole piece, and the second drive member 92 drives the cutter to extend out of the first suction plate seat 21 to cut off the pole piece. Since the cylinder only has an extended position and a retracted position, the two-stage drive member is not only light in weight, but also convenient for controlling the movement of the cutter 11. In other embodiments, the first drive member 12 and the second drive member 92 can also be set as a linear motor, a screw module, etc.

[0035] In one embodiment of the present invention, referring to Figure 2 As shown, in order to improve the efficiency of the first suction plate seat 21 and the second suction plate seat 22 in pressing the pole piece strip, a first driving mechanism is also included. The first driving mechanism also includes two first drivers 6 arranged on the base 1. The two first drivers 6 respectively drive the first mounting plate 31 and the second mounting plate 32 to move closer to or away from each other.

[0036] In one embodiment of the present invention, referring to Figure 2 As shown, in order to drive the first suction plate seat 21 and the second suction plate seat 22 to rotate so that the first suction plate seat 21 and the second suction plate seat 22 can stick the adhesive tape on both sides of the joint of the new pole piece material roll and the old pole piece material roll, a second driving mechanism is also included, and the second driving mechanism includes two second drivers 71, and the two second drivers 71 are respectively arranged on the first mounting plate 31 and the second mounting plate 32, and the two second drivers 71 respectively drive the first suction plate seat 21 and the second suction plate seat 22 to flip, specifically, after the first suction plate seat 21 fixes the pole piece material strip, the second driver 71 drives the second suction plate seat 22 to rotate, and sticks the pre-absorbed adhesive tape on the joint; after the second suction plate seat 22 fixes the pole piece material strip, the second driver 71 drives the first suction plate seat 21 to rotate, and sticks the pre-absorbed adhesive tape on the other side of the joint.

[0037] In one embodiment of the present invention, referring to Figure 3 As shown, it also includes a third driving mechanism arranged on the second mounting plate 32, and the third driving mechanism includes a third driver 13. The output end of the third drive is connected to the second suction plate seat 22, and the third driver 13 drives the second suction plate seat 22 to approach or move away from the first suction plate seat 21. The third driver 13 drives the second suction plate seat 22 to move to achieve fine adjustment of the distance between the first suction plate seat 21 and the second suction plate seat 22.

[0038] In one embodiment of the utility model, the tape splicing mechanism 10 is arranged between the fixed adjusting mechanism 5 and the unwinding mechanism, and the initial end of the pole piece stock roll placed on the unwinding mechanism can be arranged on the fixed adjusting mechanism 5 after passing through the cutting mechanism 9 and the tape splicing mechanism 10. The fixed adjusting mechanism 5 includes a first waste collecting shaft 51 and a second waste collecting shaft 52 and a motor for driving the first waste collecting shaft 51 and the second waste collecting shaft 52 to rotate. The first waste collecting shaft 51 and the second waste collecting shaft 52 are both provided with a slot 53. The end of the new pole piece stock passes through the gap, bypasses the first guide roller 41 and passes through the slot 53 of the first waste collecting shaft 51 to be fixed. When the new pole piece stock needs to be aligned with the old pole piece stock, the fixed adjusting mechanism 5 is pushed by the external structure to move along the width direction of the pole piece stock until the new pole piece stock is aligned with the old pole piece stock. The first waste collecting shaft 51 and the second waste collecting shaft 52 can also be used for winding and recycling waste strips.

[0039] In one embodiment of the present invention, referring to Figure 1 As shown, in order to improve the loading and unloading efficiency of adhesive tape and waste tape, the first suction plate seat 21 and the second suction plate seat 22 are both provided with a first suction surface 81 and a second suction surface 82 perpendicular to each other, and the first suction surface 81 is arranged between the first suction plate seat 21 and the second suction plate seat 22. When the first suction plate seat 21 and the second suction plate seat 22 are rotated at a fixed angle, the second suction surface 82 can also be located between the first suction plate seat 21 and the second suction plate seat 22, that is, on both sides of the pole piece. The first suction surface 81 and the second suction surface 82 are connected to an external vacuum device, and the suction force is adjustable. The second suction surface 82 is used to absorb adhesive tape, and the first suction surface 81 is used to absorb new pole piece tape, old pole piece tape and cut waste tape.

[0040] The two first adsorption surfaces 81 each include two pole piece adsorption surfaces that can independently control the vacuum degree, namely, the first pole piece adsorption surface 811 and the second pole piece adsorption surface 812. The cutter accommodating gap 211 is located between the first pole piece adsorption surface 811 and the second pole piece adsorption surface 812 of the first suction plate seat 21, and the cutter avoidance groove 222 is located between the first pole piece adsorption surface 811 and the second pole piece adsorption surface 812 of the second suction plate seat 22.

[0041] In one embodiment of the present invention, referring to Figure 5 As shown, the cutter avoidance groove 222 is provided with a plurality of adsorption holes 223 and an external dust removal device. Since dust or debris may be generated when the material strip is cut, the dust or debris will enter the cutter avoidance groove 222, which is conducive to the cutter avoidance groove 222 to collect dust or debris.

[0042] In one embodiment of the present invention, referring to Figure 3 As shown, it also includes a plurality of guide rollers arranged in the pole piece conveying path, and a first guide roller 41 and a second guide roller 42 are arranged relative to each other between the fixed adjustment mechanism 5 and the belt connecting mechanism 10. The pole piece material belt bypasses the first guide roller 41 and passes through the slot 53 of the first waste collecting shaft 51, or the pole piece material belt bypasses the second guide roller 42 and passes through the slot 53 of the second waste collecting shaft 52. The first unwinding mechanism 61 and the second unwinding mechanism 62 are arranged relatively to each other. When the first unwinding mechanism 61 stores a new material roll and the second unwinding mechanism 62 stores an old material roll, the first waste collecting shaft 51 located on the same side of the first unwinding mechanism 61 fixes the end of the pole piece of the new material roll, and the second waste collecting shaft 52 located on the same side of the second unwinding mechanism 62 is idle. On the contrary, when the first unwinding mechanism 61 stores an old material roll and the second unwinding mechanism 62 stores a new material roll, the first waste collecting shaft 51 located on the same side of the first unwinding mechanism 61 is idle, and the second waste collecting shaft 52 located on the same side of the second unwinding mechanism 62 fixes the end of the pole piece of the new material roll.

[0043] The working principle of the automatic belt splicing device of the utility model is:

[0044] When the old pole sheet material of the second unwinding mechanism 62 is about to be used up, the end of the new pole sheet material located at the first unwinding mechanism 61 is manually passed through the gap 7, bypassed the first guide roller 41, passed through the slot of the first waste collection shaft 51 and fixed, and the fixing adjustment mechanism 5 adjusts the new pole sheet material to be aligned with the old pole sheet material.

[0045] The first suction surfaces 81 of the first suction plate seat 21 and the second suction plate seat 22 are arranged opposite to each other, and the first suction plate seat 21 and the second suction plate seat 22 are driven by the first driver 6 to approach and adsorb and press the overlapping new pole piece material strip and the old pole piece material strip. At the same time, the first driving member 12 drives the cutter 11 to move relative to the first suction plate seat 21 and approach the pole piece.

[0046] When the first suction surface 81 of the first suction plate seat 21 and the second suction plate seat 22 press the overlapping new pole piece material strip and the old pole piece material strip, the second driving member 92 drives the cutter 11 to extend out of the receiving gap 211, and the slit 7 is inserted into the cutter avoidance groove 222 to cut the pressed new pole piece material strip and the old pole piece material strip. The timing and stroke of the cutter 11 extending can be controlled, which improves the cutting accuracy. The cutter 11 shrinks into the cutter receiving gap 211 after cutting. The purpose of cutting is to ensure that the initial end of the new pole piece material strip is aligned with the end of the old pole piece material strip.

[0047] The first electrode piece adsorption surface 811 of the first suction plate seat 21 breaks the vacuum to release the electrode piece, and the second electrode piece adsorption surface 812 of the first suction plate seat 21 adsorbs the cut end of the new electrode piece, and the first waste material collection shaft 51 reels the waste material or manually removes the waste material. The second electrode piece adsorption surface 812 of the second suction plate seat 22 breaks the vacuum to release the electrode piece, and the first electrode piece adsorption surface 811 of the second suction plate seat 22 adsorbs the cut end of the old electrode piece. At this time, the head of the new material roll and the tail of the old material roll are respectively released.

[0048] The first suction plate seat 21 and the second suction plate seat 22 are driven close to each other again, the first suction plate seat 21 is driven to adsorb the new and old pole pieces, the second suction plate seat 22 breaks the vacuum, the second suction plate seat 22 is driven away from the first suction plate seat 21, and then driven to flip, the second adsorption surface 82 of the second suction plate seat 22 faces the joint of the new and old pole pieces, and the second suction plate seat 22 is driven close to the first suction plate seat 21 to attach the tape.

[0049] The second suction surface 82 of the second suction plate seat 22 adsorbs the tape and the old and new pole pieces, the first suction plate seat 21 is driven away from the second suction plate seat 22, the first suction plate seat 21 is driven to flip, the second suction surface 82 of the first suction plate seat 21 faces the joint of the new and old pole pieces, the first suction plate seat 21 is driven close to the second suction plate seat 22 to attach the tape to the other side of the joint of the new and old pole pieces, completing the attachment of the tape on both sides of the new and old pole pieces.

[0050] After the connection between the new and old pole pieces is completed, the automatic connection device is driven to restore the initial state, waiting for the next connection between the new and old pole pieces.

[0051] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. An automatic tape splicing device, characterized in that: include: Pedestal; The belt connection mechanism comprises a first suction plate seat and a second suction plate seat which are arranged on the base relatively to each other, a gap for the pole piece to pass through is arranged between the first suction plate seat and the second suction plate seat, the first suction plate seat and the second suction plate seat are arranged to be able to approach or move away from each other, the first suction plate seat is provided with a cutter accommodating gap, and the second suction plate seat is provided with a cutter avoidance groove facing the cutter accommodating gap; The cutting mechanism is arranged on the base, and includes a first driving member and a cutter connected to the first driving member. The cutter is inserted into the cutter accommodating gap. The first driving member drives the cutter to pass through the cutter accommodating gap and extend to the cutter avoidance groove, or retract into the cutter accommodating gap.

2. An automatic tape splicing device according to claim 1, characterized in that: The belt connection device further comprises a guide rail arranged on the base, the guide rail extends along the thickness direction of the pole piece, and the first suction plate seat and the second suction plate seat slide along the guide rail.

3. An automatic tape splicing device according to claim 2, characterized in that: The belt connecting device also includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are slidably connected to the guide rail, the first suction plate seat and the second suction plate seat are respectively mounted on the first mounting plate and the second mounting plate, and the cutting mechanism is arranged on the first mounting plate.

4. An automatic tape splicing device according to claim 3, characterized in that: It also includes a first driving mechanism, which includes two first drivers arranged on the base, and the two first drivers respectively drive the first mounting plate and the second mounting plate to move closer to or away from each other.

5. The automatic tape splicing device according to claim 3, characterized in that: It also includes a second driving mechanism, which includes two second drivers, which are respectively arranged on the first mounting plate and the second mounting plate, and the two second drivers respectively drive the first suction plate seat and the second suction plate seat to flip relative to each other.

6. The automatic tape splicing device according to claim 3, characterized in that: It also includes a third driving mechanism arranged on the second mounting plate, wherein the third driving mechanism is connected to the second suction plate seat and drives the second suction plate seat to approach or move away from the first suction plate seat.

7. The automatic tape splicing device according to claim 1, characterized in that The automatic tape splicing device also includes an unwinding mechanism for placing the pole piece roll and a fixed adjusting mechanism for fixing the pole piece, and the tape splicing mechanism is arranged between the fixed adjusting mechanism and the unwinding mechanism.

8. The automatic tape splicing device according to claim 1, characterized in that: The first suction plate seat and the second suction plate seat are both provided with a first suction surface and a second suction surface which are perpendicular to each other, and the first suction surface is arranged between the first suction plate seat and the second suction plate seat.

9. An automatic tape splicing device according to claim 8, characterized in that: The first adsorption surfaces each include two independently controllable pole piece adsorption surfaces.

10. An automatic tape splicing device according to claim 9, characterized in that: The cutter accommodating gap is located between the two pole piece adsorption surfaces of the first suction plate seat, and the cutter avoiding groove is located between the two pole piece adsorption surfaces of the second suction plate seat.

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