Roll core separation pretreatment device

Abstract

The invention belongs to the technical field of lithium battery recycling, and particularly relates to a roll core separation pretreatment device which comprises a placing table, a laser module and a clamping jaw, the placing table is used for placing a roll core, the laser module is located above the placing table, and a laser cutting head of the laser module faces the placing table; the clamping jaw is located above the containing table and used for clamping the roll core, the clamping jaw is provided with a rotating mechanism, and the rotating mechanism is used for driving the roll core to turn over when the clamping jaw clamps the roll core. On the basis of ensuring that the bonding and fixing part at the tail end of the roll core is effectively cut, the diaphragm or the adhesive tape near the cutting part is prevented from being fused to be tightly bonded with the pole piece, subsequent complete separation of the pole piece and the diaphragm is facilitated, residues of the diaphragm and the adhesive tape on the pole piece after separation are reduced, other operations such as diaphragm punching and the like can be carried out on the surface of the roll core, and the production efficiency is improved. And other requirements in the separation operation can be better met.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery recycling technology, specifically relating to a core separation and pretreatment device. Background Technology

[0002] In lithium battery recycling production, when automating the separation of separators and positive / negative electrode sheets, the adhesive fixing points at the ends of the core need to be disassembled first. Traditional methods include mechanical cutting or hot air melting. However, mechanical cutting has low precision, easily leaving adhesive residue that affects subsequent separator and positive / negative electrode sheet separation, and the cutting tools wear out quickly, requiring frequent replacement. Hot air melting, on the other hand, can cause heat concentration, leading to melting and adhesion of surrounding separators, thus affecting subsequent separator and positive / negative electrode sheet separation. Furthermore, mechanical cutting or hot air melting has limited functionality and cannot meet other requirements in automated separator and positive / negative electrode sheet separation operations. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a core separation pretreatment device that ensures that the bonding and fixing part at the end of the core is effectively cut open, avoids the diaphragm or tape near the cut point from melting and sticking tightly to the electrode, facilitates the complete separation of the electrode and diaphragm in the later stage, reduces the residue of diaphragm and tape on the electrode after separation, and can also perform other operations such as diaphragm perforation on the core surface, so as to better meet other needs in the separation operation.

[0004] The present invention includes a placement platform, a laser module, and grippers. The placement platform is used to place the roll core. The laser module is located above the placement platform and the laser cutting head of the laser module is positioned facing the placement platform. The grippers are located above the placement platform and are used to clamp the roll core. The grippers are provided with a rotating mechanism for driving the roll core to flip over when the grippers are clamping the roll core.

[0005] Furthermore, the gripper includes a linear drive mechanism and two gripping arms, which are arranged opposite to each other and parallel. The linear drive mechanism is used to drive the two gripping arms to move closer to or further away from each other.

[0006] Furthermore, each of the two clamping arms has several push rods on its opposite sides, and the ends of the push rods are pointed.

[0007] Furthermore, one side of the clamping arm with several push rods is also connected to a positioning plate via a support column. The positioning plate has several through holes, and the ends of the push rods pass through the several through holes.

[0008] Furthermore, the gripper also includes a fixing plate, on which two gripping arms are slidably mounted.

[0009] Furthermore, the linear drive mechanism includes a lead screw and a motor. The lead screw is rotatably mounted on a fixed plate, and the threads at both ends of the lead screw are in opposite directions. Two clamping arms are correspondingly mounted at both ends of the lead screw through threaded engagement. The motor is mounted on the fixed plate and is directly or via transmission connected to one end of the lead screw.

[0010] Furthermore, the gripper also includes two connecting seats, with two gripping arms correspondingly disposed on the two connecting seats. One connecting seat is threadedly connected to one end of the lead screw, and the other connecting seat is connected to the other end of the lead screw, so that the two gripping arms are correspondingly disposed at both ends of the lead screw through threaded engagement.

[0011] Furthermore, both connecting seats are slidably engaged with the fixed plate via slide rails and sliders, so that the two clamping arms are slidably mounted on the fixed plate.

[0012] Furthermore, the two clamping arms are rotatably mounted on the two connecting seats, and there are two rotating mechanisms, which are respectively mounted on the two connecting seats. Each rotating mechanism is directly or through a transmission connection with the clamping arm on its connecting seat.

[0013] Furthermore, the placement platform or laser cutting head is equipped with a nitrogen nozzle.

[0014] The beneficial effects of this invention are as follows: Laser cutting offers higher precision, accurately cutting the bonded area at the end of the core. Its energy is more concentrated, precisely and effectively targeting the cut position. This ensures the bonded area at the core end is effectively cut while preventing the diaphragm or tape near the cut from melting and adhering tightly to the electrode. This facilitates the complete separation of the electrode and diaphragm and reduces diaphragm and tape residue on the electrode after separation. Furthermore, the gripper design allows for easy adjustment of the core's posture. Combined with the laser cutting head, other operations such as diaphragm perforation can be performed on the core surface, facilitating the adsorption of the electrode below through the diaphragm during subsequent separation operations, better meeting other requirements in the separation process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the core separation pretreatment device of the present invention.

[0016] Figure 2 For the present invention Figure 1 Enlarged view of point A in the image.

[0017] In the diagram: 11. Placement platform; 12. Laser module; 121. Laser cutting head; 13. Gripper; 131. Fixing plate; 132. Lead screw; 133. Motor; 134. Connecting seat; 135. Gripper arm; 1351. Top rod; 1352. Support column; 136. Positioning plate; 1361. Through hole; 137. Rotation mechanism. Detailed Implementation

[0018] like Figure 1 and Figure 2 As shown, the present invention provides a core separation pretreatment device, including a placement table 11, a laser module 12, and a gripper 13. The placement table 11 is used to place the core conveyed from the previous station. The laser module 12 is located above the placement table 11, and the laser cutting head 121 of the laser module 12 is set towards the placement table 11. The gripper 13 is located above the placement table 11 and is used to clamp the core. The gripper 13 is provided with a rotating mechanism 137, which is used to drive the core to rotate when the gripper 13 clamps the core, so as to flip the core.

[0019] This invention employs laser cutting, which offers higher cutting precision and can accurately cut the adhesive fixing points at the ends of the core. Its energy is more concentrated, allowing for precise and effective application to the target cutting position. This ensures that the adhesive fixing points at the core ends are effectively cut while preventing the diaphragm or tape near the cutting point from melting and adhering tightly to the electrode. This facilitates the complete separation of the electrode and diaphragm and reduces the amount of diaphragm and tape residue on the electrode after separation. Furthermore, the gripper 13 allows for easy adjustment of the core's posture. Combined with the laser cutting head 121, other operations such as diaphragm perforation can be performed on the core surface to facilitate the adsorption of the electrode below through the diaphragm during subsequent separation operations, better meeting other requirements in the separation process.

[0020] The gripper 13 includes a linear drive mechanism and two gripping arms 135, which are arranged opposite each other and parallel. The linear drive mechanism is used to drive the two gripping arms 135 to move closer or further apart. Based on this arrangement, the two gripping arms 135 clamp the core through relative movement in a parallel state. Compared with the hinged movement of the gripping arms 135, the gripper 13 of the present invention clamps the core more stably and effectively.

[0021] In a preferred embodiment of the present invention, each of the two clamping arms 135 has a plurality of push rods 1351 on its opposite sides, and the ends of the push rods 1351 are pointed. In this embodiment, the two clamping arms 135 clamp the two sides of the core through the ends of the push rods 1351. While ensuring stable and effective clamping of the core, the rotation of the core by the rotating mechanism 137 can form a release structure for the core to unfold. When applied to a core separation device, the additional core release structure can be eliminated, reducing the structural complexity of the core separation device.

[0022] The clamping arm 135, which has several push rods 1351, is also connected to a positioning plate 136 via a support column 1352. The positioning plate 136 has several through holes 1361, through which the ends of the push rods 1351 pass. This arrangement provides support for the push rods 1351 and improves their structural stability.

[0023] The gripper 13 also includes a fixing plate 131, and two gripping arms 135 are slidably disposed on the fixing plate 131 to guide the movement of the two gripping arms 135 and improve the stability of the two gripping arms 135 when they move.

[0024] The linear drive mechanism includes a lead screw 132 and a motor 133. The lead screw 132 is rotatably mounted on a fixed plate 131, and the threads at both ends of the lead screw 132 are in opposite directions. Two clamping arms 135 are correspondingly mounted at both ends of the lead screw 132 via threaded engagement. The motor 133 is mounted on the fixed plate 131, and the output end of the motor 133 is directly connected to one end of the lead screw 132, or connected via a transmission structure. Based on this configuration, while ensuring the movement accuracy of the two clamping arms 135, a single linear drive mechanism can simultaneously drive both clamping arms 135 to move closer or further apart, reducing the number of linear drive mechanisms required and thus lowering the overall structural complexity and cost.

[0025] The gripper 13 further includes two connecting seats 134, and two gripping arms 135 are correspondingly disposed on the two connecting seats 134. One connecting seat 134 is threadedly connected to one end of the lead screw 132, and the other connecting seat 134 is connected to the other end of the lead screw 132, so that the two gripping arms 135 are correspondingly disposed at both ends of the lead screw 132 through threaded engagement. Slider blocks are provided on the two connecting seats 134, and slide rails are provided on the fixing plate 131. The sliders on the two connecting seats 134 are slidably engaged with the slide rails, so that the two gripping arms 135 are slidably disposed on the fixing plate 131.

[0026] In a preferred embodiment of the present invention, two clamping arms 135 are rotatably mounted on two connecting seats 134. Two rotating mechanisms 137 are provided, each mounted on one of the two connecting seats 134. Each rotating mechanism 137 is directly connected to the clamping arm 135 on its corresponding connecting seat 134, or is connected via a transmission structure. Based on this configuration, the rotating mechanism 137 drives the core to rotate by driving the two clamping arms 135, eliminating the need for the gripper 13 to rotate as a whole. This avoids interference or obstruction problems that can occur when the gripper 13 rotates as a whole, and also facilitates core release. The rotating mechanism 137 can be a rotary cylinder or a motor module.

[0027] Specifically, this invention uses a laser with a wavelength of 200-1000nm. The placement stage 11 or the laser cutting head 121 is equipped with a nitrogen nozzle, which is connected to an external nitrogen source. During laser cutting, nitrogen is introduced for protection, and the temperature of the cutting area is controlled in real time within the range of 50-80℃, further avoiding the problem of diaphragm and tape melting caused by heat concentration.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0029] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A core separation pretreatment device, characterized in that, The device includes a placement platform (11), a laser module (12), and a gripper (13). The placement platform (11) is used to place the roll core. The laser module (12) is located above the placement platform (11), and the laser cutting head (121) of the laser module (12) is set towards the placement platform (11). The gripper (13) is located above the placement platform (11) and is used to hold the roll core. The gripper (13) is provided with a rotating mechanism (137), which is used to drive the roll core to flip over when the gripper (13) holds the roll core.

2. The core separation pretreatment apparatus as described in claim 1, characterized in that, The gripper (13) includes a linear drive mechanism and two gripping arms (135), which are arranged opposite to each other and parallel. The linear drive mechanism is used to drive the two gripping arms (135) to move closer to or further away from each other.

3. The core separation pretreatment apparatus as described in claim 2, characterized in that, Each of the two clamping arms (135) has several push rods (1351) on its opposite side, and the ends of the push rods (1351) are pointed.

4. The core separation pretreatment apparatus as described in claim 3, characterized in that, The clamping arm (135) has several push rods (1351) on one side, and a positioning plate (136) is connected to it via a support column (1352). The positioning plate (136) has several through holes (1361), and the ends of the push rods (1351) pass through the several through holes (1361).

5. The core separation pretreatment apparatus according to any one of claims 2-4, characterized in that, The gripper (13) also includes a fixing plate (131), and two gripping arms (135) are slidably disposed on the fixing plate (131).

6. The core separation pretreatment apparatus as described in claim 5, characterized in that, The linear drive mechanism includes a lead screw (132) and a motor (133). The lead screw (132) is rotatably mounted on a fixed plate (131), and the threads at both ends of the lead screw (132) are opposite in direction. Two clamping arms (135) are correspondingly mounted at both ends of the lead screw (132) through threaded engagement. The motor (133) is mounted on the fixed plate (131) and is directly or via transmission connected to one end of the lead screw (132).

7. The core separation pretreatment apparatus as described in claim 5, characterized in that, The gripper (13) also includes two connecting seats (134), and two gripping arms (135) are correspondingly disposed on the two connecting seats (134). One connecting seat (134) is threadedly connected to one end of the lead screw (132), and the other connecting seat (134) is connected to the other end of the lead screw (132), so that the two gripping arms (135) are correspondingly disposed at both ends of the lead screw (132) through threaded engagement.

8. The core separation pretreatment apparatus as described in claim 7, characterized in that, Both connecting seats (134) are slidably engaged with the fixed plate (131) via slide rails and sliders, so that the two clamping arms (135) are slidably set on the fixed plate (131).

9. The core separation pretreatment apparatus as described in claim 7 or 8, characterized in that, Two clamping arms (135) are rotatably mounted on two connecting seats (134). There are two rotating mechanisms (137), which are respectively mounted on two connecting seats (134). Each rotating mechanism (137) is directly or through transmission connected to the clamping arm (135) on its connecting seat (134).

10. The core separation pretreatment apparatus as described in claim 1, characterized in that, A nitrogen nozzle is provided on the placement platform (11) or the laser cutting head (121).

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