Multi-layer electrode plate coating device for forming lithium battery

Abstract

The invention relates to the technical field of electrode plate processing, in particular to a lithium battery forming multilayer electrode plate coating device which comprises a vertical frame and two sets of concave mounting frames, and the two sets of concave mounting frames are in mirror symmetry relative to the vertical frame and are fixedly mounted at the middle sections of the two side faces of the vertical frame respectively. The front inner wall and the rear inner wall of each set of concave installation frame are provided with a material conveying roller and a material rolling roller through clamping frames of concave structures respectively, electrode plates are jointly rolled between the material conveying rollers and the corresponding material rolling rollers on the same side, transmission wheels are arranged at the bottoms of each set of material rolling rollers, and a transmission belt is jointly connected between the two sets of transmission wheels in the same row in a sleeved mode. Wherein a motor is arranged at a rotating shaft at the top of one group of winding rollers, limiting frames are fixedly mounted at two ends of the inner wall of the bottom of the vertical frame, and the top of each limiting frame is of a curved surface structure. On the basis of stretching and smoothing multiple groups of electrode plates, the electrode plates are automatically turned over, so that the double-sided coating effect of the electrode plates is facilitated, and the coating efficiency of the multiple layers of electrode plates is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electrode sheet processing, and in particular to a multi-layer electrode sheet coating device for lithium battery molding. Background Art

[0002] Coating is a method of coating a paste polymer, a molten polymer or a polymer melt on paper, cloth or a plastic film to obtain a composite material (film). During the production and processing of electrode sheets, the surface of the electrode sheet generally needs to be coated.

[0003] According to the patent CN211376806U, a lithium battery electrode sheet coating device is disclosed, which adjusts the electrode sheet position and makes the coating liquid of the coating roller evenly distributed, thereby improving the coating efficiency;

[0004] Although the above patent can adjust the coating of the motor sheet, this coating method is limited to the single-sided coating process of the single-layer electrode sheet, and it is difficult to coat multiple groups of electrode sheets at the same time. In addition, when the traditional electrode sheet coating device is in operation, most of them use multiple groups of rollers to transmit materials. However, it is difficult to quickly turn the electrode sheet over with the help of roller transmission. The entire electrode sheet needs to be turned over after coating is completed, resulting in reduced electrode sheet coating efficiency.

[0005] In view of the technical defects in this aspect, a solution is now proposed. Summary of the invention

[0006] The purpose of the present invention is to realize automatic flipping of electrode sheets on the basis of stretching and smoothing multiple groups of electrode sheets, thereby facilitating double-sided coating of the electrode sheets and improving the coating efficiency of multi-layer electrode sheets.

[0007] The objective of the present invention can be achieved through the following technical scheme: A multi-layer electrode sheet coating device for lithium battery molding, comprising a vertical frame and two groups of concave mounting frames, the two groups of concave mounting frames are mirror-symmetrical with respect to the vertical frame and are respectively fixedly mounted at the middle sections of the two side surfaces of the vertical frame, the front and rear inner walls of each group of the concave mounting frames are respectively provided with a material transfer roller and a material winding roller through a concave structure clamping frame, the material transfer roller and the corresponding material winding roller on the same side are jointly wound with the electrode sheet, a transmission wheel is provided at the bottom of each group of the material winding rollers, a transmission belt is jointly sleeved between the two groups of the transmission wheels in the same row, a motor is provided at the top rotating shaft of one group of the material winding rollers, and limit frames are fixedly mounted at both ends of the bottom inner wall of the vertical frame.

[0008] Furthermore, the top of the limit frame is a curved structure, and a limit groove with the same structure as the limit frame is opened inside the limit frame near the frame, and a tooth group is arranged at the center of the inner wall at the top of the limit groove, and each group of the limit grooves is slidably connected with a sliding shaft at the bottom position of one side, and the front and rear end circular shafts of the sliding shaft extend to the outside of the limit groove and are fixedly installed with a disc, and a plurality of groups of tooth grooves are arranged in a ring at equal distances in the middle section of the sliding shaft.

[0009] Furthermore, a liquid collecting box is commonly provided on one side of the two groups of discs, and the liquid collecting box is arranged on one side inside the limiting frame, a liquid guiding frame is fixedly provided on the side of the liquid collecting box away from the discs, and several groups of coating rollers are embedded in one side of the liquid guiding frame at equal distances.

[0010] Furthermore, a transverse frame is fixedly connected between the two groups of concave mounting frames and at the front end of the vertical frame. Each group of transverse frames is provided with slots at both ends, and an inner slot is provided inside the transverse frame between the two groups of slots. A partition is fixedly installed at the center of the inner slot, and blocks are movably connected inside the inner slot at both sides of the partition. A spring damping shock absorber is commonly provided between the opposite surfaces of the two groups of blocks and the two side surfaces of the partition.

[0011] Furthermore, the other ends of the two groups of the blocks pass through the inner groove and extend into the slot, and the blocks extend on one side of the slot and the corresponding inner wall of the slot are equidistantly embedded and rotatably connected with a vertical roller, and one side of the roller extends into the inner groove.

[0012] Furthermore, vertical grooves are provided at the middle and upper ends of the inner walls on both sides of the vertical frame, and a lifting mechanism is commonly provided between the two groups of the vertical grooves. The lifting mechanism includes a lifting plate, which is slidably connected between the two groups of vertical grooves, and a push rod is provided at the center of the top of the lifting plate. The top of the push rod extends to the inner wall of the top of the vertical frame and is provided with a cylinder. Vertical poles are fixedly installed at the left, middle and right positions of the bottom of the lifting plate at the front and rear end frame, and a lifting frame is fixedly installed at the bottom of each group of vertical poles.

[0013] Furthermore, both ends of each group of the lifting frames are provided with sliding grooves, and long grooves are provided inside the lifting frames at adjacent positions of the two groups of sliding grooves, and push rods are provided through the long grooves near both ends, one end of the push rod extends into the sliding groove, and a spring damping shock absorber 2 is provided between the other end and the inner wall of the sliding groove, a slot 1 is provided at the center of the inside of each group of the push rods, and the inner wall of one side of the slot 1 is provided with an inclined surface, and slots 2 are provided at the upper and lower end surfaces of the lifting frames corresponding to the beveled end of the slot 1, and wedge-shaped push pieces are provided on the inner wall of the top end of the vertical frame and at the upper and lower corresponding positions of several groups of slots 2.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention is achieved by setting a limit frame, a cross frame assembly and other components to cooperate. Before the two groups of electrode sheets enter the limit frame, the two groups of electrode sheets are respectively inserted into the corresponding card slots, and the inner wall of the card slot and the end of the stop block are used to press and clamp the electrode sheets together, and the distance between the two groups of electrode sheets is adaptively adjusted according to the thickness of the electrode sheets. The two side surfaces of the electrode sheets are respectively pressed by rollers on both sides. This structure can not only limit the transmission position of the electrode sheets to prevent the electrode sheets from being arbitrarily offset during inkjet impact, but also facilitate the use of rollers to smooth out wrinkles or folds on the surface of the electrode sheets, thereby reducing the impact on the coating effect on the surface and improving the coating efficiency.

[0016] 2. The present invention is to set a lifting mechanism to cooperate with the sliding shaft, disc and other components for movement. After the single-sided coating of the electrode sheet is completed, the cylinder pulls the lifting frame to move upward, and the sliding shaft continues to move upward along the side of the limiting groove until it slides to the top curved surface of the limiting groove. At this time, the push rod is pushed and inserted into the inside of the sliding groove, and the end of the push rod continuously presses the disc, so that the disc gradually slides into the inside of the sliding groove, and the sliding shaft moves linearly to the curved surface end at the top of the limiting groove, forcing the tooth groove to engage with the tooth group, causing the liquid guide frame to rotate 180 degrees, and then the push rod loses the pressure on the disc. Therefore, the flipped sliding shaft slides to the other side of the limiting groove and continues to slide down to the bottom of the groove. At this time, the inkjet device is flipped and faces the other side of the electrode sheet, and then the above-mentioned inkjet method is repeated to inkjet coat the other side of the electrode sheet. This structure can simultaneously realize double-sided coating operations of multiple groups of electrode sheets, further improving the coating efficiency of the electrode sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a bottom plan schematic diagram of the overall structure of the present invention;

[0020] Figure 3 It is a plan view of the combination of the vertical frame and its internal structure of the present invention;

[0021] Figure 4 It is a side cross-sectional view of the push bar and the slider combined with the present invention;

[0022] Figure 5 It is a three-dimensional schematic diagram of the combination of the lifting mechanism and the sliding shaft of the present invention;

[0023] Figure 6 It is a cross-sectional view of the lifting plate of the present invention.

[0024] In the figure: 1, vertical frame; 2, concave mounting frame; 3, clamping frame; 4, material transfer roller; 5, material winding roller; 6, transmission wheel; 7, transmission belt; 8, motor; 9, limit frame; 901, limit slot; 902, tooth group; 903, sliding shaft; 904, disc; 905, tooth slot; 906, liquid collecting box; 907, liquid guiding frame; 10, horizontal frame; 101, clamping slot; 102, inner slot; 103, partition ; 104, stop block; 105, spring damping shock absorber 1; 106, roller; 11, vertical slot; 12, lifting mechanism; 121, lifting plate; 122, push rod; 123, cylinder; 124, vertical rod; 125, lifting frame; 126, slide slot; 127, long slot; 128, stop rod; 129, spring damping shock absorber 2; 130, slot 1; 131, slot 2; 132, wedge-shaped stop piece. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1: Please refer to Figure 1 - Figure 6 As shown, a multi-layer electrode sheet coating device for lithium battery molding comprises a vertical frame 1 and two groups of concave mounting frames 2, the two groups of concave mounting frames 2 are mirror-symmetrical with respect to the vertical frame 1 and are respectively fixedly mounted at the middle sections of the two sides of the vertical frame 1, the front and rear inner walls of each group of concave mounting frames 2 are respectively provided with a material transfer roller 4 and a material winding roller 5 through a clamping frame 3 of a concave structure, the material transfer roller 4 and the corresponding material winding roller 5 on the same side are jointly wound with the electrode sheet, the bottom of each group of material winding rollers 5 is provided with a transmission wheel 6, and a transmission belt 7 is jointly sleeved between the two groups of transmission wheels 6 in the same row, and a motor 8 is provided at the top rotating shaft of one group of material winding rollers 5;

[0027] The inner wall at the bottom of the vertical frame 1 is fixedly installed with a limit frame 9 at both ends. First, the two groups of electrode sheets are respectively rolled up at the two groups of winding rollers 5, and then the starting ends of the electrode sheets are respectively pulled out and pulled to the corresponding winding rollers 5. Then the motor 8 is started, which drives one group of winding rollers 5 and the corresponding transmission wheel 6 to rotate. Under the transmission action of the transmission belt 7, the two groups of winding rollers 5 are forced to rotate and roll up and pull the electrode sheets respectively.

[0028] The top of the limit frame 9 is a curved structure, and a limit groove 901 with the same structure as the limit frame 9 is opened near the frame inside the limit frame 9, and a tooth group 902 is arranged at the center of the inner wall of the top of the limit groove 901. A sliding shaft 903 is slidably connected to the bottom position of one side inside each group of limit grooves 901, and the front and rear end circular shafts of the sliding shaft 903 are extended to the outside of the limit groove 901 and fixedly installed with a disc 904. A plurality of groups of tooth grooves 905 are arranged in a ring at equal distances in the middle section of the sliding shaft 903;

[0029] A liquid collecting tank 906 is commonly provided on one side of the two groups of discs 904, and the liquid collecting tank 906 is arranged on one side of the inner part of the limiting frame 9, and a liquid guiding frame 907 is fixedly provided on the side of the liquid collecting tank 906 away from the disc 904, and a plurality of groups of coating rollers are equidistantly embedded in one side of the liquid guiding frame 907, and the two groups of electrode sheets are respectively passed through the corresponding inner part of the limiting frame 9, and one side of the electrode sheet corresponds to the left and right of the liquid guiding frame 907. Then, the liquid collecting tank 906 is started to quantitatively collect the stored ink into the inner part of the liquid guiding frame 907, and a plurality of coating rollers outside the liquid guiding frame 907 print the colloid on the corresponding surface of the electrode sheet, and the electrode sheet surface is coated in turn along with the traction movement of the electrode sheet, so as to complete the single-sided uniform coating operation of the electrode sheet.

[0030] Example 2: Please refer to Figure 1 and Figure 4 As shown, a transverse frame 10 is fixedly connected between two groups of concave installation frames 2 and located at the front end of the vertical frame 1. Each group of transverse frames 10 is provided with a card slot 101 at both ends, and an inner slot 102 is provided between the two groups of card slots 101. A partition 103 is fixedly installed at the center of the inner slot 102, and a stopper 104 is movably connected at both sides of the partition 103 inside the inner slot 102. A spring damping shock absorber 105 is commonly provided between the opposite surfaces of the two groups of stoppers 104 and the two side surfaces of the partition 103. The other ends of the two groups of stoppers 104 penetrate the inner slot 102 and extend into the card slot 101. The stopper 104 extends to one side of the card slot 101 and the corresponding inner wall of the card slot 101 at an equal distance and is embedded and rotatably connected with a vertical roller shaft 106, and one side of the roller shaft 106 extends into the inner slot 102.

[0031] Therefore, before entering the limit frame 9, the electrode sheet first passes through the interior of the card slot 101, and is pressed and clamped by the inner wall of the card slot 101 and the end of the stopper 104, and the distance between the two is adaptively adjusted according to the thickness of the electrode sheet. During the adjustment process, the stopper 104 is pressed by the electrode sheet and moves toward the interior of the inner groove 102, and the spring damping shock absorber 105 is compressed until the two sides of the electrode sheet are respectively pressed by the rollers 106 on both sides. Therefore, this structure can not only limit the transmission position of the electrode sheet to prevent the electrode sheet from being arbitrarily offset during inkjet impact, but also facilitate the smoothing of wrinkles or creases on the surface of the electrode sheet to reduce the impact on the coating effect on its surface.

[0032] Example 3: Please refer to Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, vertical grooves 11 are provided at the middle and upper ends of the inner walls of both sides of the vertical frame 1, and a lifting mechanism 12 is provided between the two groups of vertical grooves 11. The lifting mechanism 12 includes a lifting plate 121, which is slidably connected between the two groups of vertical grooves 11, and a push rod 122 is provided at the center of the top of the lifting plate 121. The top of the push rod 122 extends to the inner wall of the top of the vertical frame 1 and is provided with a cylinder 123.

[0033] The bottom of the lifting plate 121 is fixedly installed with upright poles 124 at the left, middle and right positions of the front and rear end frames, and a lifting frame 125 is fixedly installed at the bottom of each group of upright poles 124. Both ends of each group of lifting frames 125 are provided with sliding grooves 126, and long grooves 127 are provided inside the lifting frame 125 at adjacent positions of the two groups of sliding grooves 126. A stopper 128 is provided through the inside of the long groove 127 near both ends. One end of the stopper 128 extends into the inside of the sliding groove 126, and a spring damping shock absorber 2 129 is provided between the other end and the inner wall of the sliding groove 126. A slot 130 is provided at the center of each group of stoppers 128, and the inner wall of one side of the slot 130 is provided with an inclined surface.

[0034] Slots 131 are provided at the upper and lower end surfaces of the lifting frame 125 and at the corresponding ends of the beveled surfaces of the slots 130. Wedge-shaped abutment pieces 132 are provided at the inner wall of the top of the standing frame 1 and at the corresponding upper and lower positions of a plurality of groups of slots 131.

[0035] After the electrode sheet is coated on one side, the cylinder 123 is started again, and the push rod 122 is used to pull the lifting plate 121 and several groups of lifting frames 125 to move upward. Therefore, the lifting frame 125 pulls the corresponding disc 904, the sliding shaft 903, the liquid collecting box 906 and the liquid guiding frame 907 that are clamped in the inside of the slide groove 126 to move upward synchronously, and the sliding shaft 903 continues to move upward along the side of the limiting groove 901 until the sliding shaft 903 slides to the curved surface near the top of the limiting groove 901. At this time, due to the lifting frame 125 being lifted, several groups of wedge-shaped abutting pieces 132 are forced to be inserted into the lifting plate 121 and into the corresponding slot 2 131, and the bottom oblique surface of the wedge-shaped abutting piece 132 penetrates downward to press against the inclined surface of the slot 1 130, thereby forcing the abutting rod 128 to be abutted and inserted into the inside of the slide groove 126;

[0036] As the end of the push rod 128 continuously presses against the disc 904, the disc 904 gradually slides into the slide groove 126, and the slide shaft 903 moves linearly to the curved end at the top of the limiting groove 901, forcing the tooth groove 905 to engage with the tooth group 902, causing the slide shaft 903, the disc 904, the liquid collecting box 906 and the liquid guide frame 907 to rotate one hundred and eighty degrees, and then the push rod 128 loses the pressure on the disc 904, so the flipped slide shaft 903 slides to the other side of the limiting groove 901 and continues to slide down to the bottom of the groove. At this time, the inkjet device is flipped and faces the other side of the electrode sheet, and then repeats the above-mentioned inkjet method to perform inkjet coating on the other side of the electrode sheet. This structure can simultaneously realize double-sided coating operations of multiple groups of electrode sheets, effectively improving the coating efficiency of the electrode sheets.

[0037] When the present invention is used, firstly, two groups of electrode sheets are respectively rolled up at two groups of winding rollers 5, then the starting ends of the electrode sheets are respectively pulled out and pulled to the corresponding winding rollers 5, and then the motor 8 is started, which drives one group of winding rollers 5 and the corresponding transmission wheel 6 to rotate, and under the driving action of the transmission belt 7, the two groups of winding rollers 5 are forced to rotate and respectively roll up and pull the electrode sheets. Before the electrode sheets enter the limit frame 9, they first penetrate the inside of the card slot 101, and the inner wall of the card slot 101 and the end of the abutment block 104 are used to press and clamp the electrode sheets together, and the distance between the two is adaptively adjusted according to the thickness of the electrode sheets;

[0038] Secondly, two groups of electrode sheets are respectively inserted into the corresponding limiting frame 9, and one side of the electrode sheet corresponds to the liquid guide frame 907. Then the liquid collecting box 906 is started to quantitatively collect the stored ink into the liquid guide frame 907, and the colloid is printed on the corresponding electrode sheet surface by a plurality of coating rollers outside the liquid guide frame 907. The electrode sheet surface is coated in sequence with the pulling movement of the electrode sheet.

[0039] Next, after the coating of one side of the electrode sheet is completed, the cylinder 123 is started again, and the cylinder 123 uses the push rod 122 to pull the lifting plate 121 and the plurality of lifting frames 125 to move upward. Therefore, the lifting frame 125 pulls the corresponding disc 904, the sliding shaft 903, the liquid collecting box 906 and the liquid guiding frame 907 that are clamped in the slide groove 126 to move upward synchronously, and the sliding shaft 903 continues to move upward along the side of the limiting groove 901 until the sliding shaft 903 slides to the curved surface near the top of the limiting groove 901. At this time, because the lifting frame 125 is lifted, it forces the plurality of wedge-shaped abutting pieces 132 to be respectively inserted into the lifting plate 121 and into the corresponding slot 2 131, and the bottom oblique surface of the wedge-shaped abutting piece 132 penetrates downward to the slot 1 1 The inclined surface of 30 is pressed, thereby forcing the push rod 128 to be pushed and inserted into the slide groove 126. Since the end of the push rod 128 continuously presses the disc 904, the disc 904 gradually slides into the slide groove 126, and the slide shaft 903 moves linearly to the curved surface end at the top of the limiting groove 901, forcing the tooth groove 905 to mesh with the tooth group 902, causing the slide shaft 903, the disc 904, the liquid collecting box 906 and the liquid guide frame 907 to rotate 180 degrees, and then the push rod 128 loses the pressure on the disc 904, and the flipped slide shaft 903 slides to the other side of the limiting groove 901 and continues to slide down to the bottom of the groove. At this time, the inkjet device is flipped and faces the other side of the electrode sheet;

[0040] Finally, the above inkjet method is repeated to inkjet coat the other side of the electrode sheet, and at the same time, double-sided coating operations are performed on multiple groups of electrode sheets.

[0041] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-layer electrode sheet coating device for lithium battery molding, comprising a vertical frame (1) and two sets of concave mounting frames (2), wherein the two sets of concave mounting frames (2) are mirror-symmetrical with respect to the vertical frame (1) and are respectively fixedly mounted at the middle sections of the two sides of the vertical frame (1), characterized in that: The front and rear inner walls of each group of the concave installation frames (2) are respectively provided with a material transfer roller (4) and a material winding roller (5) through a concave structure clamping frame (3); the material transfer roller (4) and the corresponding material winding roller (5) on the same side are used to wind up the electrode sheet; a transmission wheel (6) is provided at the bottom of each group of the material winding rollers (5); a transmission belt (7) is commonly sleeved between the two groups of the transmission wheels (6) in the same row; a motor (8) is provided at the top rotating shaft of one group of the material winding rollers (5); and limit frames (9) are fixedly installed at both ends of the bottom inner wall of the vertical frame (1).

2. A multi-layer electrode sheet coating device for lithium battery molding according to claim 1, characterized in that: The top of the limit frame (9) is a curved structure, and a limit groove (901) having the same structure as the limit frame (9) is provided inside the limit frame (9) near the frame, a tooth group (902) is provided at the center of the inner wall of the top of the limit groove (901), a sliding shaft (903) is slidably connected to the bottom position of one side inside each group of the limit grooves (901), and the front and rear end circular shafts of the sliding shaft (903) extend to the outside of the limit groove (901) and are fixedly mounted with a disc (904), and a plurality of groups of tooth grooves (905) are provided in a ring at equal distances in the middle section of the sliding shaft (903).

3. A multi-layer electrode sheet coating device for lithium battery molding according to claim 2, characterized in that: A liquid collecting box (906) is commonly provided on one side of the two groups of circular discs (904), and the liquid collecting box (906) is arranged on one side inside the limiting frame (9); a liquid guiding frame (907) is fixedly provided on the side of the liquid collecting box (906) away from the circular discs (904), and a plurality of groups of coating rollers are embedded in one side of the liquid guiding frame (907) at equal distances.

4. A multi-layer electrode sheet coating device for lithium battery molding according to claim 1, characterized in that: A transverse frame (10) is fixedly connected between the two groups of concave installation frames (2) and located at the front end of the vertical frame (1). Each group of the transverse frames (10) is provided with a card slot (101) at both ends, and an inner groove (102) is provided inside the transverse frame (10) between the two groups of card slots (101). A partition (103) is fixedly installed at the center of the inner groove (102), and a stopper (104) is movably connected to both sides of the partition (103) inside the inner groove (102). A spring damping shock absorber (105) is provided between the opposite surfaces of the two groups of the stopper (104) and the two side surfaces of the partition (103).

5. A multi-layer electrode sheet coating device for lithium battery molding according to claim 4, characterized in that: The other ends of the two groups of the stoppers (104) penetrate the inner groove (102) and extend into the interior of the card slot (101); the stoppers (104) extend on one side of the card slot (101) and are evenly embedded and rotatably connected to a vertical roller (106) on the corresponding inner wall of the card slot (101); and one side of the roller (106) extends into the interior of the inner groove (102).

6. A multi-layer electrode sheet coating device for lithium battery molding according to claim 1, characterized in that: The inner walls of both sides of the vertical frame (1) are both provided with vertical grooves (11) at the middle and upper ends, and a lifting mechanism (12) is commonly provided between the two groups of the vertical grooves (11). The lifting mechanism (12) comprises a lifting plate (121), the lifting plate (121) is slidably connected between the two groups of vertical grooves (11), and a push rod (122) is provided at the center of the top of the lifting plate (121), the top of the push rod (122) extends to the inner wall of the top of the vertical frame (1) and is provided with a cylinder (123), and the bottom of the lifting plate (121) is fixedly installed with vertical rods (124) at the left, middle and right positions of the front and rear end frames, and a lifting frame (125) is fixedly installed at the bottom of each group of the vertical rods (124).

7. A multi-layer electrode sheet coating device for lithium battery molding according to claim 6, characterized in that: Both ends of each group of the lifting frames (125) are provided with sliding grooves (126), and long grooves (127) are provided inside the lifting frames (125) at adjacent positions of the two groups of sliding grooves (126). Abutment rods (128) are provided inside the long grooves (127) near both ends. One end of the abutment rod (128) extends into the sliding groove (126), and a spring damping shock absorber (129) is provided between the other end and the inner wall of the sliding groove (126). A slot (130) is provided at the center of each group of the abutment rods (128), and the inner wall of one side of the slot (130) is provided in an inclined surface. The upper and lower end surfaces of the lifting frames (125) are provided with slots (131) corresponding to the beveled ends of the slots (130). Wedge-shaped abutment pieces (132) are provided on the inner wall of the top end of the vertical frame (1) and corresponding to the upper and lower portions of the plurality of groups of slots (131).

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