Independent single-winding mechanism for pole piece of lithium battery winding machine

Abstract

The utility model discloses a lithium battery winder pole piece independent single winding mechanism, which relates to the field of lithium batteries and comprises a winding mechanism, an electrode piece is arranged on the right side of the winding mechanism, the back of the winding mechanism is connected with an extrusion mechanism, and the front of the winding mechanism is connected with a discharging mechanism. According to the independent single-winding mechanism for the pole piece of the lithium battery winding machine, after being wound to a certain length, the pole piece can be cut off through an external mechanism, the cut-off pole piece can be completely wound on the surface of the winding strip block, the winding efficiency of the pole piece is improved, the winding looseness can be improved when the tail of the pole piece is extruded, and therefore the winding compactness of adjacent layers is improved, and the winding quality is improved. The defective electrode plate is wound into a cylinder at a time, the loose electrode plate can be prevented from rubbing a peripheral mechanism, the connecting end can slide in a guiding mode through the guiding groove, when the connecting end slides to the end of the electrode plate, extrusion can be conducted, and the electrode plate can leave the surface of the strip winding block when being extruded; the discharging function of the single-roll mechanism on the electrode plates is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to an independent single winding mechanism for pole pieces of a lithium battery winding machine. Background Art

[0002] Lithium battery is a rechargeable battery that uses the movement of lithium ions between positive and negative electrodes to store and release electrical energy. Lithium batteries have positive and negative plates, also known as pole pieces. Winding machines are required in the manufacturing process of pole pieces. They are mainly responsible for stacking the positive and negative electrode materials together in a winding manner to form the electrode structure of the battery. The independent single-winding mechanism of the winding machine is to wind the defective pole pieces in a single section and throw them into the waste bin.

[0003] In the prior art, a Chinese patent with the authorization announcement number CN208062202U discloses a pole piece winding device of a winding machine, which belongs to the field of lithium batteries. Its technical points include a mounting seat, a winding assembly is arranged on the mounting seat, and the winding assembly includes a linear guide rail, a sleeve seat is arranged on the linear guide rail, and a winding needle outer sleeve with an incision is arranged at the front end of the sleeve seat, and the position of the incision is defined as the pole piece winding position; the sleeve seat is connected to the driving device in a transmission manner, and the driving device can drive the sleeve seat and the winding needle outer sleeve to slide along the linear guide rail; the sleeve seat A winding assembly is provided at the rear end, and a winding needle is provided at the front end of the winding assembly. The driving device drives the sleeve seat and the outer sleeve of the winding needle to slide along the linear guide rail, so that the winding needle can move through the sleeve seat and the outer sleeve of the winding needle and then extend into / exit the pole piece winding position, and cooperate with the rotation of the winding needle to complete the pole piece winding; a needle pulling driving device connected to the sleeve seat or the connecting block is provided on the side of the winding assembly. The needle pulling driving device cooperates with the sleeve seat or the connecting block to drive the winding assembly to slide along the linear guide rail, so that the winding needle moves out / extends into the pole piece winding position and removes the wound pole piece material.

[0004] At present, most independent single winding mechanisms on the market still have certain shortcomings when used. As described in the above-mentioned document, the winding needle moves through the sleeve seat and the outer sleeve of the winding needle and then extends into / out of the pole piece winding position, and the pole piece winding is completed by cooperating with the rotation of the winding needle. The stability during winding is not high, and the simple winding of the device will affect the relaxation of the pole piece. When relaxed, the pole piece is easy to be scratched with other mechanisms during the subsequent movement process, and there are certain shortcomings in use. Utility Model Content

[0005] The utility model aims to provide an independent single-rolling mechanism for pole pieces of a lithium battery winding machine, so as to solve the problem in the above-mentioned background technology that the single-rolling mechanism is not convenient for stably winding the electrode pieces and is not convenient for unloading the electrode pieces.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery winding machine pole piece independent single winding mechanism, including a winding mechanism, the winding mechanism is provided with an electrode sheet on the right side, the winding mechanism is connected to a pressing mechanism at the back, and the winding mechanism is connected to a discharge mechanism at the front;

[0007] The winding mechanism includes a box body, a first motor is installed on the left side of the box body, a screw rod is fixed to the output end of the first motor, the screw rod rotates inside the box body, a threaded cylinder is threaded on the surface of the screw rod, a clamp block is connected to the surface of the screw rod, the clamp block slides through the box body, a movable plate is fixed at the bottom of the clamp block, a guide rail frame is slidably connected to the upper surface of the movable plate, a second motor is installed on the inner side of the guide rail frame, two sets of bearings are installed inside the guide rail frame, a first rotating rod is fixed to the output end of the second motor, and the first rotating rod rotates through the bearing of a guide rail frame, a connecting end is slidably connected to the surface of the first rotating rod, and a winding block is symmetrically connected to the right end of the connecting end.

[0008] Furthermore, the extrusion mechanism includes a first cylinder, which is installed on the back of the box, a fixed block is fixed to the output end of the first cylinder, a rotating block is rotatably connected to the surface of the fixed block, and a second rotating rod is connected to the left side of the rotating block.

[0009] Furthermore, the second rotating rod penetrates and rotates inside another guide rail frame, a connecting block is connected to the left side of the second rotating rod, and an extrusion rod is rotatably connected to the left side of the connecting block.

[0010] Furthermore, the unloading mechanism includes an external block, which is fixed to the front of the box body, a second cylinder is installed on the right side of the external block, a guide block is fixed on the left side of the external block, and an L-shaped block slides on the surface of the guide block.

[0011] Furthermore, a latch is fixed on the back of the L-shaped block, a connecting piece is connected to the inner side of the latch, and the connecting piece is fixed to the output end of the second cylinder.

[0012] Furthermore, a slot is provided on the surface of the connecting end, a guide groove is provided on the surface of the first rotating rod, and a connecting end is slidably provided on the surface of the guide groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The lithium battery winding machine has an independent single-winding mechanism for the electrode sheet. After the electrode sheet is wound to a certain length, it can be cut off by an external mechanism. After cutting, the electrode sheet will be completely wound on the surface of the winding bar block, which improves the efficiency of electrode sheet winding. When the tail of the electrode sheet is squeezed, the looseness of the winding can be increased, thereby improving the tightness of the adjacent layers of winding. The defective electrode sheet can be wound into a cylinder at one time, which can prevent the loose electrode sheet from being scratched by the surrounding mechanism. The sliding of the connection end can be guided by the guide groove. When the connection end slides to the end of the electrode sheet, it can be squeezed. When the electrode sheet is squeezed, it can leave the surface of the winding bar block, realizing the unloading function of the single-winding mechanism for the electrode sheet;

[0015] 2. A winding block is provided, and the electrode sheet is sandwiched between two winding blocks for winding, which can improve the efficiency of winding the electrode sheet;

[0016] 3. A guide rail frame is provided, and the two bearings inside the guide rail frame can improve the stability of the first rotating rod and the second rotating rod during rotation, reduce the wear of the machine parts during the movement process, and increase the service life;

[0017] 4. An extrusion rod is provided. Through the rotation of the extrusion rod and the connecting block, the extrusion rod will reduce friction when extruding the electrode sheet, thereby reducing component wear and improving the smoothness of extrusion;

[0018] 5. A latch is provided, and the position of the connection end can be positioned by inserting the latch into the slot, and the electrode sheet can be unloaded through the connection end, which improves the convenience of single-roll mechanism operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is an enlarged three-dimensional structural diagram of the coil block of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the coil block of the utility model;

[0022] Figure 4 This is an enlarged three-dimensional structural diagram of the connection block of the utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the box body of the utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the electrode sheet winding of the utility model;

[0025] Figure 7 For this utility model Figure 6 The enlarged three-dimensional structure diagram of the middle A part;

[0026] Figure 8 It is a schematic diagram of the enlarged three-dimensional structure of the guide groove of the utility model.

[0027] In the figure: 1, winding mechanism; 2, electrode sheet; 3, extrusion mechanism; 4, unloading mechanism; 101, box body; 102, first motor; 103, screw rod; 104, threaded cylinder; 105, clamping block; 106, movable plate; 107, second motor; 108, first rotating rod; 109, guide rail frame; 110, connecting end; 111, winding block; 301, first cylinder; 302, fixed block; 303, rotating block; 304, second rotating rod; 305, connecting block; 306, extrusion rod; 401, external block; 402, second cylinder; 403, guide block; 404, L-shaped block; 405, latch; 406, connecting piece; 407, slot; 408, guide groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1:

[0030] like Figure 1-Figure 3 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that a single winding mechanism is not convenient for stably winding the electrode sheet 2, which affects the winding efficiency, a winding mechanism 1 is disclosed:

[0031] The winding mechanism 1 includes a winding mechanism 1, an electrode sheet 2 is arranged on the right side of the winding mechanism 1, an extrusion mechanism 3 is connected to the back of the winding mechanism 1, and a discharge mechanism 4 is connected to the front of the winding mechanism 1. The winding mechanism 1 includes a box body 101, a first motor 102 is installed on the left side of the box body 101, a screw rod 103 is fixed to the output end of the first motor 102, the screw rod 103 rotates inside the box body 101, a threaded cylinder 104 is threadedly connected to the surface of the screw rod 103, a clamping block 105 is connected to the surface of the screw rod 103, the clamping block 105 penetrates and slides inside the box body 101, and a movable plate 1 is fixed to the bottom of the clamping block 105 06, the upper surface of the movable plate 106 is slidably connected with a guide frame 109, a second motor 107 is installed inside the guide frame 109, two sets of bearings are installed inside the guide frame 109, a first rotating rod 108 is fixed to the output end of the second motor 107, and the first rotating rod 108 rotates through a bearing of a guide frame 109, a connecting end 110 is slidably connected to the surface of the first rotating rod 108, and a winding block 111 is symmetrically connected to the right end of the connecting end 110. When the single winding mechanism is used, the electrode sheet 2 is moved to the specified position, and the output end of the first motor 102 is started to drive the screw rod 103 rotates, and when the screw rod 103 rotates, the threaded cylinder 104 can be driven to slide in a threaded manner. When the threaded cylinder 104 slides in a threaded manner, the clamping block 105 can be driven to move. When the clamping block 105 moves, it can slide through the box body 101. When the clamping block 105 slides, it can drive the movable plate 106 to move. When the movable plate 106 moves to a specified position, the guide rail frame 109 can slide through the upper surface of the movable plate 106. When the guide rail frame 109 slides, it can drive the winding block 111 at the end of the connecting end 110 to move. When the two winding blocks 111 move to the side of the electrode sheet 2, the second electric Machine 107, when the second motor 107 is started, the output end can drive the first rotating rod 108 to rotate, and the first rotating rod 108 can rotate through the bearing inside the guide frame 109 when it rotates. At the same time, when the first rotating rod 108 rotates, it can drive the two winding blocks 111 to rotate through the connecting end 110, and when the two winding blocks 111 rotate, the electrode sheet 2 on the inside can be wound. After the electrode sheet 2 is wound to a certain length, the electrode sheet 2 can be cut off by an external mechanism. After cutting, the electrode sheet 2 will be completely wound on the surface of the winding block 111, which improves the efficiency of winding the electrode sheet 2.

[0032] Embodiment 2:

[0033] like Figure 3-Figure 5 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the electrode sheet 2 of the single-rolling mechanism has low rolling accuracy, is relatively loose, and is easy to be scratched with other components, an extrusion mechanism 3 is disclosed:

[0034] The extrusion mechanism 3 includes a first cylinder 301, which is mounted on the back of the box 101. A fixed block 302 is fixed to the output end of the first cylinder 301. A rotating block 303 is rotatably connected to the surface of the fixed block 302. A second rotating rod 304 is connected to the left side of the rotating block 303. The second rotating rod 304 rotates through another guide frame 109. A connecting block 305 is connected to the left side of the second rotating rod 304. The connecting block 305 is rotatably connected to the extrusion rod 306 on the left side. When the electrode sheet 2 of the single-rolling mechanism is rolled up, the output end of the first cylinder 301 can be started to shrink. When the output end of the first cylinder 301 shrinks, the fixed block 302 can be driven to move. When the fixed block 302 moves, the rotating block 303 can be driven to rotate. At the same time, the fixed block 302 can be rotated by the rotating block 3 03 is rotated, when the rotating block 303 rotates, it can drive the second rotating rod 304 to rotate, and when the second rotating rod 304 rotates, it can rotate through another bearing inside the guide frame 109, and when the second rotating rod 304 rotates, it can drive the connecting block 305 to rotate, and when the connecting block 305 rotates, it can drive the extrusion rod 306 to rotate to the sheared tail of the electrode sheet 2 for extrusion, and the friction between the extrusion rod 306 and the electrode sheet 2 can be increased during extrusion, and the extrusion rod 306 can be rotated through the connecting block 305 through the friction force, and when the tail of the electrode sheet 2 is squeezed, the slackness of the winding can be increased, thereby improving the tightness of the adjacent layers of the winding, and winding the defective electrode sheet into a tube shape at one time, which can prevent the loose electrode sheet 2 from rubbing against the surrounding mechanism, and further improve the quality of the electrode sheet 2 during winding.

[0035] Embodiment three:

[0036] like Figure 6-Figure 8 The technical solution shown in the figure, the present invention provides the following technical solution: In order to solve the problem that the electrode sheet 2 of the single-roll mechanism is inconvenient to disassemble and unload, which reduces the unloading efficiency, a unloading mechanism 4 is disclosed:

[0037] The unloading mechanism 4 includes an external block 401, which is fixed to the front of the box body 101, a second cylinder 402 is installed on the right side of the external block 401, a guide block 403 is fixed to the left side of the external block 401, an L-shaped block 404 is slidably arranged on the surface of the guide block 403, a latch 405 is fixed to the back of the L-shaped block 404, a connecting piece 406 is connected to the inner side of the latch 405, and the connecting piece 406 is fixed to the output end of the second cylinder 402, a slot 407 is provided on the surface of the connecting end 110, and the first A guide groove 408 is provided on the surface of a rotating rod 108, and a connecting end 110 is slidably provided on the surface of the guide groove 408. After the single-winding mechanism rewinds the electrode sheet 2, the screw rod 103 can drive the clamping block 105 to reset under the action of the first motor 102. When the clamping block 105 is reset, the movable plate 106 can be driven to reset, and the guide rail frame 109 can be reset at the same time. When the movable plate 106 and the guide rail frame 109 are reset, the connecting end 110 can drive the slot 407 to move, and the slot 407 moves When the second cylinder 402 reaches the side of the latch 405, the output end can push the connecting piece 406 to move. When the connecting piece 406 moves, it can drive the L-shaped block 404 to move. When the L-shaped block 404 moves, it can slide through the guide block 403. When the L-shaped block 404 slides, it can drive the latch 405 to move. When the latch 405 is inserted into the slot 407, it can be positioned. When the slot 407 is positioned, it can drive the connecting end 110 to be positioned. When the connecting end 110 is positioned, the first rotating rod 108 continues to reset to the contracted state. At this time, the latch 405 will squeeze the slot 407. During squeezing, the first rotating rod 108 can slide with the connecting end 110. The sliding of the connecting end 110 can be guided by the guide groove 408. When the connecting end 110 slides to the end of the electrode sheet 2, it can be squeezed. When the electrode sheet 2 is squeezed, it can slowly leave the surface of the coil block 111, realizing the unloading function of the single coil mechanism for the electrode sheet 2.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery winding machine electrode sheet independent single winding mechanism, comprising a winding mechanism (1), an electrode sheet (2) is arranged on the right side of the winding mechanism (1), a pressing mechanism (3) is connected to the back of the winding mechanism (1), and a discharge mechanism (4) is connected to the front of the winding mechanism (1), It is characterized by: The winding mechanism (1) comprises a box body (101), a first motor (102) is installed on the left side of the box body (101), a screw rod (103) is fixed to the output end of the first motor (102), the screw rod (103) rotates inside the box body (101), a threaded cylinder (104) is threadedly connected to the surface of the screw rod (103), a clamping block (105) is connected to the surface of the screw rod (103), the clamping block (105) penetrates and slides inside the box body (101), and a movable plate (106) is fixed to the bottom of the clamping block (105). The upper surface of the movable plate (106) is slidably connected to a guide rail frame (109), a second motor (107) is installed inside the guide rail frame (109), two sets of bearings are installed inside the guide rail frame (109), a first rotating rod (108) is fixed to the output end of the second motor (107), and the first rotating rod (108) rotates through the bearing of a guide rail frame (109), a connecting end (110) is slidably connected to the surface of the first rotating rod (108), and a winding bar block (111) is symmetrically connected to the right end of the connecting end (110).

2. The independent single winding mechanism of a lithium battery winding machine according to claim 1, characterized in that: The extrusion mechanism (3) comprises a first cylinder (301), the first cylinder (301) is mounted on the back of the box (101), a fixed block (302) is fixed to the output end of the first cylinder (301), a rotating block (303) is rotatably connected to the surface of the fixed block (302), and a second rotating rod (304) is connected to the left side of the rotating block (303).

3. The independent single winding mechanism of a lithium battery winding machine according to claim 2, characterized in that: The second rotating rod (304) penetrates and rotates inside another guide rail frame (109); the left side of the second rotating rod (304) is connected to a connecting block (305); the left side of the connecting block (305) is rotatably connected to an extrusion rod (306).

4. The independent single winding mechanism of a lithium battery winding machine according to claim 1, characterized in that: The unloading mechanism (4) comprises an external block (401), the external block (401) is fixed to the front of the box body (101), a second cylinder (402) is installed on the right side of the external block (401), a guide block (403) is fixed on the left side of the external block (401), and an L-shaped block (404) is slidably disposed on the surface of the guide block (403).

5. The independent single winding mechanism of a lithium battery winding machine according to claim 4, characterized in that: A latch (405) is fixed on the back of the L-shaped block (404), a connecting piece (406) is connected to the inner side of the latch (405), and the connecting piece (406) is fixed to the output end of the second cylinder (402).

6. The independent single winding mechanism of a lithium battery winding machine according to claim 1, characterized in that: A slot (407) is provided on the surface of the connection end (110), a guide groove (408) is provided on the surface of the first rotating rod (108), and the connection end (110) slides on the surface of the guide groove (408).

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