Coating equipment

Abstract

The utility model provides coating equipment. The coating equipment is used for coating an electrode plate. The coating equipment comprises a rack, a coating die head, an adjusting device, a limiting device and a die head driver. And the coating die head is arranged in a sliding manner relative to the rack and is used for coating the coating on the electrode plate. The adjusting device is installed on the rack and used for adjusting the distance between the coating die head and the electrode pole piece. The limiting device is fixedly connected to the rack. And the die head driver is mounted on the rack and is used for driving the coating die head to keep abutting against the limiting device. Thus, in the coating process of the electrode pole piece, the coating die head is jointly limited through the die head driver and the limiting device, jumping of the coating die head can be reduced or avoided, and the distance between the coating die head and the electrode pole piece is kept stable, so that the consistency of the coating thickness of the electrode pole piece is improved, and the coating quality of the coating equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating equipment, in particular to a coating equipment. Background Art

[0002] In the existing coating equipment, the coating die head is prone to jumping, and the distance between the coating die head and the electrode plate is unstable, resulting in poor consistency of the coating thickness of the electrode plate. Summary of the Utility Model

[0003] The utility model provides a coating equipment to solve the problem that the coating die head is prone to jumping.

[0004] The utility model provides a coating equipment for coating an electrode plate. The coating equipment includes a frame, a coating die head, an adjusting device, a limiting device and a die head driver. The coating die head is slidably arranged relative to the frame and is used for coating the electrode plate with a coating material. The adjusting device is installed on the frame and is used for adjusting the distance between the coating die head and the electrode plate. The limiting device is fixedly connected to the frame. The die head driver is installed on the frame and is used for driving the coating die head to be in contact with the limiting device.

[0005] In some embodiments, the coating equipment further includes a guiding roller and a clamping device. The coating die head is located between the guiding roller and the clamping device. The guiding roller and the coating die head are located on the same side of the electrode plate. The coating die head is in contact with the electrode plate. The separation point of the guiding roller and the electrode plate, the contact point of the coating die head and the electrode plate, and the clamping point of the clamping device and the electrode plate are collinearly arranged.

[0006] In some embodiments, the coating die head includes a first die body and a second die body. A slurry channel is formed between the first die body and the second die body. The first die body is located upstream of the second die body along the conveying path of the electrode plate. The first die body is in contact with the electrode plate. An arc portion is arranged at one end of the first die body close to the electrode plate. The second die body is spaced from the electrode plate.

[0007] In some embodiments, the limiting device includes a fixing structure and a stopping structure. The fixing structure is fixedly connected to the frame. The stopping structure is arranged on the fixing structure and extends relative to the fixing structure in the direction towards the coating die head. One end of the stopping structure away from the fixing structure is used for being in contact with the coating die head.

[0008] In some embodiments, the limiting device further includes an adjusting structure mounted on the fixed structure, and the adjusting structure is used to adjust the protruding length of the stopping structure relative to the fixed structure.

[0009] In some embodiments, the adjusting device includes a first abutting member and a second abutting member. The first abutting member is movably mounted on the machine frame, and the second abutting member is slidably connected to the machine frame and is fixedly arranged relative to the coating die head. The first abutting member is used to push the second abutting member to move when moving relative to the second abutting member along the conveying path of the electrode plate, so that the second abutting member drives the coating die head to approach or move away from the electrode plate.

[0010] In some embodiments, the adjusting device further includes a base fixedly connected to the machine frame. The base has opposite first end and second end along the conveying path of the electrode plate. The first abutting member is mounted on the base, and the second abutting member is located on the side of the first abutting member away from the base; along the direction of the first abutting member towards the second abutting member, the protruding height of the first abutting member relative to the base monotonically increases or decreases from the first end towards the second end; and / or, along the direction of the second abutting member towards the first abutting member, the protruding height of the second abutting member relative to the base monotonically increases or decreases from the first end towards the second end.

[0011] In some embodiments, the adjusting device further includes a driving member and a transmission member. The driving member is fixedly connected to the machine frame, the transmission member is in threaded cooperation with the first abutting member, the driving member is used to drive the transmission member to rotate, and when the transmission member rotates, it drives the first abutting member to move relative to the machine frame.

[0012] In some embodiments, the coating equipment further includes a distance indicating device, and the distance indicating device is used to indicate the moving distance of the second abutting member.

[0013] In some embodiments, the coating equipment further includes a detecting device, and the detecting device is used to detect the distance between the coating die head and the electrode plate.

[0014] In some embodiments, the clamping device includes a height adjusting structure, a first clamping roller and a second clamping roller. The electrode plate is clamped between the first clamping roller and the second clamping roller, and the height adjusting structure is used to drive the first clamping roller and the second clamping roller to move integrally relative to the machine frame.

[0015] In some embodiments, the clamping device further includes a first spacing adjustment structure and a second spacing adjustment structure. Both the first spacing adjustment structure and the second spacing adjustment structure are used to adjust the spacing between the first clamping roller and the second clamping roller, and the adjustment accuracy of the second spacing adjustment structure is greater than that of the first spacing adjustment structure.

[0016] In some embodiments, the coating device further includes a first driving structure for driving the guide roller to reciprocate in a first direction, and / or the coating device further includes a second driving structure for driving the guide roller to reciprocate in a second direction. The first direction and the second direction are arranged at an angle.

[0017] In the coating device provided by the present utility model, the coating die head is driven to move relative to the frame by an adjusting device so that the distance between the coating die head and the electrode pole piece meets the production requirements. The adjusting device is used to define the installation position of the limiting device on the frame. After the limiting device is fixedly connected to the frame, the limiting device is in contact with the coating die head. The die head driver drives the coating die head to keep in contact with the limiting device. In this way, during the coating process of the electrode pole piece, the common limitation of the coating die head by the die head driver and the limiting device can reduce or avoid the jumping of the coating die head, keep the distance between the coating die head and the electrode pole piece stable, thereby improving the consistency of the coating thickness of the electrode pole piece and the coating quality of the coating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of the coating device provided by the embodiment of the present utility model.

[0020] Figure 2 is Figure 1 an enlarged view of part I in

[0021] Figure 3 is Figure 1 an enlarged view of part II in

[0022] Figure 4 is a schematic structural diagram of the electrode pole piece provided by the embodiment of the present utility model.

[0023] Figure 5 is a schematic structural diagram of the clamping device provided by the embodiment of the present utility model.

[0024] Description of main reference numerals: coating equipment 100; frame 101; coating die head 110; first die body 111; arc portion 1111; straight portion 1112; second die body 112; slurry channel 113; die head fixing seat 114; adjusting device 120; first abutting member 121; third stop portion 1212; second abutting member 122; support seat 1222; guiding and sliding structure 123; base 124; first end 1241; second end 1242; first stop portion 1243; second stop portion 1244; driving member 1251; transmission member 1252; limiting device 130; fixing structure 131; stop structure 132; adjusting structure 133; die head driver 140; distance indicating device 150; scale 151; pointer 152; detecting device 160; guiding roller 170; first driving structure 171; second driving structure 172; clamping device 180; first clamping roller 181; second clamping roller 182; height adjusting structure 183; driving portion 1831; mounting portion 1832; first spacing adjusting structure 184; second spacing adjusting structure 185; fixing portion 1851; abutting portion 1852; stop portion 1853; electrode plate 200; coating area 210; non - coating area 220.

[0025] The following specific embodiments will further illustrate the present invention in conjunction with the above - mentioned drawings. Specific embodiments

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0027] Referring to "embodiments" or "embodiments" herein means that the specific features, structures or characteristics described in conjunction with the embodiments or embodiments can be included in at least one embodiment of the present invention. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0028] It should be noted that the terms in the specification and claims of the present invention and the above - mentioned drawings are only for describing specific embodiments and do not intend to limit the present invention. The terms "first", "second", etc. in the specification and claims of the present invention and the above - mentioned drawings are used to distinguish different objects, rather than to describe a specific order.

[0029] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a coating device 100 provided by an embodiment of the present invention. The coating device 100 is used for coating an electrode plate 200. The coating device 100 includes a frame 101, a coating die head 110, an adjusting device 120, a limiting device 130, and a die head driver 140. The coating die head 110 is slidably arranged relative to the frame 101. The coating die head 110 is used for coating a slurry on the electrode plate 200. The adjusting device 120 is installed on the frame 101. The adjusting device 120 is used for adjusting the distance between the coating die head 110 and the electrode plate 200. The limiting device 130 is fixedly connected to the frame 101. The die head driver 140 is installed on the frame 101. The die head driver 140 is used for driving the coating die head 110 to keep in contact with the limiting device 130.

[0030] In the coating device 100 provided by the embodiment of the present invention, the adjusting device 120 drives the coating die head 110 to move relative to the frame 101, so that the distance between the coating die head 110 and the electrode plate 200 meets the production requirements. The adjusting device 120 is used for limiting the installation position of the limiting device 130 on the frame 101. After the limiting device 130 is fixedly connected to the frame 101, the limiting device 130 is in contact with the coating die head 110. The die head driver 140 drives the coating die head 110 to keep in contact with the limiting device 130. In this way, during the coating process of the electrode plate 200, through the combined limitation of the die head driver 140 and the limiting device 130 on the coating die head 110, the jumping of the coating die head 110 can be reduced or avoided, so that the distance between the coating die head 110 and the electrode plate 200 is kept stable, thereby improving the consistency of the coating thickness of the electrode plate 200 and improving the coating quality of the coating device 100.

[0031] In this embodiment, the adjusting device 120 is used to adjust the coating die head 110 to a position where it is in contact with the electrode plate 200. After the die head driver 140 presses the coating die head 110 against the limiting device 130, the coating die head 110 remains in contact with the electrode plate 200. In this way, the coating die head 110 can support the electrode plate 200, keep the electrode plate 200 taut, reduce the fluctuations generated during the transportation of the electrode plate 200, and improve the consistency of the coating thickness of the electrode plate 200.

[0032] In some embodiments, the limiting device 130 includes a fixing structure 131 and a stopping structure 132. The fixing structure 131 is fixedly connected to the frame 101. The stopping structure 132 is disposed on the fixing structure 131 and protrudes relative to the fixing structure 131 in the direction towards the coating die head 110. One end of the stopping structure 132 away from the fixing structure 131 is used to abut against the coating die head 110. The fixing structure 131 and the frame 101 are detachably connected to facilitate adjusting the position of the limiting device 130 on the frame 101. The stopping structure 132 and the fixing structure 131 may be connected by a threaded connection. The fixing structure 131 is provided with a first threaded hole. The stopping structure 132 passes through the first threaded hole, and a threaded structure matching the first threaded hole is provided on the stopping structure 132. By rotating the stopping structure 132, the length that the stopping structure 132 protrudes relative to the fixing structure 131 in the direction towards the coating die head 110 can be adjusted.

[0033] In some embodiments, the limiting device 130 further includes an adjusting structure 133 mounted on the fixing structure 131. A second threaded hole matching the threaded structure on the stopping structure 132 may be provided on the adjusting structure 133. The adjusting structure 133 is sleeved on the stopping structure 132. After the adjusting structure 133 rotates to an abutting state with the fixing structure 131, the adjusting structure 133 can fix the stopping structure 132 relative to the fixing structure 131, preventing the stopping structure 132 from rotating relative to the fixing structure 131 when subjected to vibration, so that the protruding length of the stopping structure 132 relative to the fixing structure 131 is kept fixed, and further the position of the coating die head 110 relative to the frame 101 is fixed, avoiding the coating die head 110 from jumping. The adjusting structure 133 is also used to adjust the protruding length of the stopping structure 132 relative to the fixing structure 131. Specifically, by rotating the adjusting structure 133 in the reverse direction to space the adjusting structure 133 from the fixing structure 131, then rotating the stopping structure 132 and adjusting the protruding length of the stopping structure 132 relative to the fixing structure 131 to a predetermined length, and finally rotating the adjusting structure 133 to make the adjusting structure 133 abut against the fixing structure 131, this can avoid repeatedly disassembling and assembling the fixing structure 131 and the frame 101, reduce the adjustment difficulty of the limiting device 130, and improve the adjustment efficiency.

[0034] In some embodiments, the limiting device 130 can be configured as a single structure, and the whole limiting device 130 is detachably fixed on the frame 101. When adjusting the distance between the coating die head 110 and the electrode plate 200, after the adjusting device 120 drives the coating die head 110 to move relative to the frame 101 to a suitable position, the whole limiting device 130 is moved to a position abutting against the coating die head 110, and then the limiting device 130 is fixedly installed on the frame 101.

[0035] Please refer toFigure 1 and Figure 2 , the adjusting device 120 includes a first abutting member 121 and a second abutting member 122. The first abutting member 121 is movably mounted on the frame 101. The second abutting member 122 is slidably connected to the frame 101 and is fixedly arranged relative to the coating die head 110. The die head driver 140 is further configured to keep the second abutting member 122 in abutment with the first abutting member 121 through the coating die head 110. Specifically, the coating device 100 further includes a support seat 1222 and a die head fixing seat 114 fixedly connected to the support seat 1222. The support seat 1222 is fixedly connected to the second abutting member 122. The die head fixing seat 114 is fixedly connected to the coating die head 110.

[0036] When the first abutting member 121 moves relative to the second abutting member 122, the first abutting member 121 is configured to push the second abutting member 122 to move relative to the frame 101, and the second abutting member 122 drives the coating die head 110 to approach or move away from the electrode tab 200. The moving direction of the first abutting member 121 relative to the second abutting member 122 may be along the direction of the conveying path of the electrode tab 200, or form an angle with the direction of the conveying path of the electrode tab 200. Wherein, the direction of the conveying path of the electrode tab 200 may refer to the direction of the conveying path of the portion of the electrode tab 200 located at the coating die head 110.

[0037] The moving stroke of the first abutting member 121 is greater than the moving stroke of the second abutting member 122. When the first abutting member 121 pushes the second abutting member 122 to move, the moving distance of the first abutting member 121 is greater than the moving distance of the second abutting member 122. The first abutting member 121 is configured to amplify the moving distance of the second abutting member 122, so as to improve the adjustment accuracy of the position of the coating die head 110.

[0038] The adjusting device 120 further includes a base 124 fixedly connected to the frame 101. The base 124 has opposite first end 1241 and second end 1242 along the conveying path direction of the electrode plate 200. Along the conveying path of the electrode plate 200, the first end 1241 is located upstream of the second end 1242. The first abutting member 121 is mounted on the base 124. The second abutting member 122 is located on the side of the first abutting member 121 away from the base 124. Along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 monotonically increases or decreases from the first end 1241 towards the second end 1242, and / or, along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 monotonically increases or decreases from the first end 1241 to the second end 1242. Exemplarily, in this embodiment, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 monotonically decreases from the first end 1241 towards the second end 1242, and along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 monotonically increases from the first end 1241 to the second end 1242. Wherein, when the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 to move away from the electrode plate 200.

[0039] In some embodiments, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 remains unchanged from the first end 1241 towards the second end 1242, and along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 monotonically increases from the first end 1241 to the second end 1242. Wherein, when the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 to move away from the electrode plate 200.

[0040] In some embodiments, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 remains unchanged from the first end 1241 towards the second end 1242, and along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 monotonically decreases from the first end 1241 to the second end 1242. Wherein, when the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 to move towards the electrode plate 200.

[0041] In some embodiments, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 monotonically increases from the first end 1241 towards the second end 1242. Along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 remains unchanged from the first end 1241 towards the second end 1242. Wherein, when the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 to move towards the electrode tab 200.

[0042] In some embodiments, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 monotonically decreases from the first end 1241 towards the second end 1242. Along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 remains unchanged from the first end 1241 towards the second end 1242. Wherein, when the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 to move away from the electrode tab 200.

[0043] In some embodiments, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 monotonically increases from the first end 1241 towards the second end 1242. Along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 monotonically decreases from the first end 1241 towards the second end 1242. Wherein, when the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 to move towards the electrode tab 200.

[0044] In some embodiments, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 monotonically decreases from the first end 1241 towards the second end 1242. Along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 monotonically decreases from the first end 1241 towards the second end 1242. Wherein, when the first abutting member 121 slides along the side surface of the second abutting member 122 towards the first abutting member 121, and the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 towards the direction close to the electrode tab 200. When the second abutting member 122 slides along the side surface of the first abutting member 121 towards the second abutting member 122, and the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 towards the direction away from the electrode tab 200.

[0045] In some embodiments, along the direction of the first abutting member 121 towards the second abutting member 122, the protruding height of the first abutting member 121 relative to the base 124 monotonically increases from the first end 1241 towards the second end 1242. Along the direction of the second abutting member 122 towards the first abutting member 121, the protruding height of the second abutting member 122 relative to the base 124 monotonically increases from the first end 1241 towards the second end 1242. Wherein, when the first abutting member 121 slides along the side surface of the second abutting member 122 towards the first abutting member 121, and the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 towards the direction away from the electrode tab 200. When the second abutting member 122 slides along the side surface of the first abutting member 121 towards the second abutting member 122, and the first abutting member 121 moves from the first end 1241 towards the second end 1242, the first abutting member 121 pushes the second abutting member 122 towards the direction close to the electrode tab 200.

[0046] One side surface of the first abutting member 121 facing the second abutting member 122 is provided as a flat surface or an arc surface, and / or one side surface of the second abutting member 122 facing the first abutting member 121 is provided as a flat surface or an arc surface. Exemplarily, in this embodiment, one side surface of the first abutting member 121 facing the second abutting member 122 can be provided as a flat surface, and one side surface of the second abutting member 122 facing the first abutting member 121 can be provided as a flat surface to reduce the processing difficulty of the first abutting member 121 and the second abutting member 122. In some embodiments, one side surface of the first abutting member 121 facing the second abutting member 122 can be provided as a flat surface, and one side surface of the second abutting member 122 facing the first abutting member 121 can be provided as an arc surface. In some embodiments, one side surface of the first abutting member 121 facing the second abutting member 122 can be provided as an arc surface, and one side surface of the second abutting member 122 facing the first abutting member 121 can be provided as a flat surface. In some embodiments, one side surface of the first abutting member 121 facing the second abutting member 122 can be provided as an arc surface, and one side surface of the second abutting member 122 facing the first abutting member 121 can be provided as an arc surface.

[0047] The adjusting device 120 further includes a driving member 1251 and a transmission member 1252. The driving member 1251 is fixedly connected to the frame 101. The transmission member 1252 is in transmission connection with the driving member 1251. The transmission member 1252 is used to drive the first abutting member 121 to move relative to the frame 101. Wherein, the transmission member 1252 can be in threaded cooperation with the first abutting member 121. The driving member 1251 is used to drive the transmission member 1252 to rotate. When the transmission member 1252 rotates, it drives the first abutting member 121 to move relative to the frame 101. Exemplarily, the transmission member 1252 and the first abutting member 121 can be configured as a lead screw-nut structure to improve the smoothness and movement accuracy of the first abutting member 121 when moving relative to the frame 101, thereby improving the adjustment accuracy of the coating die head 110. Specifically, the transmission member 1252 can be configured as a lead screw structure. The transmission member 1252 is rotatably connected to the base 124. The first abutting member 121 is configured as a nut structure that cooperates with the lead screw structure. When the driving member 1251 drives the transmission member 1252 to rotate, the first abutting member 121 moves along the axial direction of the transmission member 1252. Wherein, the driving member 1251 can be configured as a servo driver to improve the rotation accuracy when the driving member 1251 drives the transmission member 1252 to rotate. In some embodiments, the first abutting member 121 can include a nut structure and an abutting structure, and the abutting structure is fixedly connected to the nut structure. The nut structure is used for threaded cooperation with the transmission member 1252, and the abutting structure is used for abutting against the second abutting member 122.

[0048] In some embodiments, the transmission member 1252 can also be configured as a timing belt, a chain, etc. For example, the transmission member 1252 can be configured as a timing belt, and the first abutting member 121 is fixed on the timing belt. The driving member 1251 is used to drive the timing belt to move, and the timing belt drives the first abutting member 121 to move.

[0049] In some embodiments, the adjusting device 120 further includes a guiding and sliding structure 123 to reduce the frictional force between the first abutting member 121 and the second abutting member 122, thereby improving the adjusting accuracy and service life of the adjusting device 120. Among them, the guiding and sliding structure 123 can be disposed at one end of the first abutting member 121 close to the second abutting member 122 and is used to abut against the second abutting member 122. The guiding and sliding structure 123 can be configured as a roller or a ball. When the first abutting member 121 moves relative to the second abutting member 122, the guiding and sliding structure 123 is used to change the sliding friction into rolling friction, so as to reduce the frictional force between the first abutting member 121 and the second abutting member 122. In some embodiments, the guiding and sliding structure 123 can also be disposed at one end of the second abutting member 122 close to the first abutting member 121 and is used to abut against the first abutting member 121.

[0050] The adjusting device 120 further includes a first stopping portion 1243 and a second stopping portion 1244. The first stopping portion 1243 and the second stopping portion 1244 are spaced apart. A third stopping portion 1212 is provided on the first abutting member 121. Along the moving direction of the first abutting member 121, the third stopping portion 1212 is located between the first stopping portion 1243 and the second stopping portion 1244. Among them, an activity space for the third stopping portion 1212 is formed between the first stopping portion 1243 and the second stopping portion 1244. The first stopping portion 1243 and the second stopping portion 1244 can prevent the moving stroke of the first abutting member 121 from exceeding a preset range and avoid the problem that the first abutting member 121 is disengaged from the second abutting member 122.

[0051] In some embodiments, the coating device 100 further includes a distance indicating device 150. The distance indicating device 150 is configured to indicate the moving distance of the second abutting member 122 relative to the frame 101, so as to facilitate the technician to adjust the position of the second abutting member 122 relative to the frame 101. Wherein, the distance indicating device 150 may include a scale 151 and a pointer 152. The scale 151 is fixedly arranged relative to the frame 101. The pointer 152 is fixedly arranged relative to the second abutting member 122. When the second abutting member 122 moves relative to the frame 101, the second abutting member 122 drives the pointer 152 to move relative to the scale 151, and the moving distance of the second abutting member 122 relative to the frame 101 can be obtained by reading the value indicated by the pointer 152 on the scale 151. Wherein, the pointer 152 may be fixedly connected to any one of the second abutting member 122, the support seat 1222, the die head fixing seat 114, and the coating die head 110. Exemplarily, the pointer 152 may be fixed on the coating die head 110. The scale 151 is arranged at a position corresponding to the pointer 152 on the frame 101.

[0052] In some embodiments, the coating device 100 further includes a detection device 160. The detection device 160 is configured to detect the distance between the coating die head 110 and the electrode plate 200. Wherein, the coating device 100 further includes a controller communicatively connected to the detection device 160. The controller is configured to receive in real time the distance data detected by the detection device 160. When the controller determines that the distance data is abnormal, it can control the coating device 100 to stop working, so as to stop coating the electrode plate 200 in time and reduce losses. The detection device 160 may be arranged at a position between the adjusting device 120 and the limiting device 130. The detection device 160 may also be configured to detect the moving distance of the die head fixing seat 114 relative to the frame 101, so as to detect the movement of the coating die head 110 relative to the frame 101. The detection device 160 may be configured as a grating detection device to improve the detection accuracy.

[0053] In some embodiments, the coating device 100 further includes a guiding roller 170 and a clamping device 180. The coating die head 110 is located between the guiding roller 170 and the clamping device 180. The guiding roller 170 is arranged in contact with the electrode tab 200 and is used to guide the electrode tab 200 to change the conveying direction of the electrode tab 200. The coating die head 110 is arranged in contact with the electrode tab 200. The guiding roller 170 and the coating die head 110 are located on the same side of the electrode tab 200. The separation point between the guiding roller 170 and the electrode tab 200, the contact point between the coating die head 110 and the electrode tab 200, and the clamping point between the clamping device 180 and the electrode tab 200 are collinear, so as to keep the electrode tab 200 taut, thereby improving the coating effect of the coating die head 110 and avoiding the problem of the slurry coated on the electrode tab 200 falling off. In some embodiments, the separation point between the guiding roller 170 and the electrode tab 200, the contact point between the coating die head 110 and the electrode tab 200, and the clamping point between the clamping device 180 and the electrode tab 200 may not be collinear. For example, along the height direction of the coating device 100, the contact point between the coating die head 110 and the electrode tab 200 is higher than the separation point between the guiding roller 170 and the electrode tab 200 and the clamping point between the clamping device 180 and the electrode tab 200.

[0054] In the embodiments of the present utility model, by jointly adjusting the electrode tab 200 and the coating die head 110 through the guiding roller 170, the adjusting device 120, the limiting device 130, the die head driver 140 and the clamping device 180, the fine adjustment of the distance between the electrode tab 200 and the coating die head 110 can be realized, so as to realize the fine adjustment of the coating thickness of the slurry on the electrode tab 200, and avoid the coating die head 110 from jumping during operation, thereby improving the coating quality of the coating device 100.

[0055] In some embodiments, two coating die heads 110 may be provided, and the two coating die heads 110 are arranged on different sides of the electrode tab 200 and are used to coat the two opposite surfaces of the electrode tab 200 respectively.

[0056] The coating device 100 further includes a first driving structure 171, and the first driving structure 171 is used to drive the guiding roller 170 to reciprocate along a first direction, and / or the coating device 100 further includes a second driving structure 172, and the second driving structure 172 is used to drive the guiding roller 170 to reciprocate along a second direction. The first direction and the second direction are arranged at an angle.

[0057] In some embodiments, the coating device 100 may include a first driving structure 171. The first direction may be the direction in which the coating die head 110 approaches or moves away from the electrode plate 200. By driving the guide roller 170 to move, the first driving structure 171 can adjust the distance between the electrode plate 200 and the coating die head 110, and adjust the tension of the electrode plate 200 to keep the electrode plate 200 taut and improve the coating quality.

[0058] In some embodiments, the coating device 100 may include a second driving structure 172. The second direction may be the direction of the conveying path of the electrode plate 200. The first direction and the second direction may be perpendicularly arranged. By driving the guide roller 170, the second driving structure 172 can adjust the tension of the electrode plate 200 to keep the electrode plate 200 taut and improve the coating quality.

[0059] In some embodiments, the coating device 100 may include a first driving structure 171 and a second driving structure 172. The first driving structure 171 and the second driving structure 172 can independently drive the guide roller 170 to move, so as to adjust the distance between the electrode plate 200 and the coating die head 110, and adjust the tension of the electrode plate 200 to keep the electrode plate 200 taut and improve the coating quality.

[0060] Please refer to Figure 1 and Figure 3 , the coating die head 110 includes a first die body 111 and a second die body 112. A slurry channel 113 is formed between the first die body 111 and the second die body 112. The slurry channel 113 is used to connect with a storage tank. The slurry flows out of the coating die head 110 through the slurry channel 113. The first die body 111 is located upstream of the second die body 112 along the conveying path of the electrode plate 200. The first die body 111 is in contact with the electrode plate 200. Wherein, an arc portion 1111 is provided at one end of the first die body 111 close to the electrode plate 200 to reduce the friction between the first die body 111 and the electrode plate 200 and avoid damaging the electrode plate 200 by the first die body 111. The second die body 112 is spaced from the electrode plate 200 so that the slurry flows out from the gap between the second die body 112 and the electrode plate 200, and the slurry adheres to the electrode plate 200 better.

[0061] In some embodiments, a flat portion 1112 is further provided at one end of the first die body 111 close to the electrode plate 200. The arc portion 1111 is located on the side of the flat portion 1112 away from the second die body 112. The flat portion 1112 is in contact with the electrode plate 200. Among them, the coating die head 110 can avoid damaging the electrode plate 200 by the arc portion 1111, and the contact between the flat portion 1112 and the electrode plate 200 can increase the contact area between the first die body 111 and the electrode plate 200, so as to support the electrode plate 200 more stably.

[0062] Please refer to Figure 1 , Figure 4 and Figure 5 , the clamping device 180 includes a first clamping roller 181, a second clamping roller 182 and a height adjustment structure 183. The electrode plate 200 includes a coating area 210 and a non-coating area 220. The coating area 210 and the non-coating area 220 extend along the conveying direction of the electrode plate 200. The coating area 210 and the non-coating area 220 are adjacent to each other along the direction perpendicular to the conveying direction of the electrode plate 200. Among them, the non-coating area 220 can be set to two, the coating area 210 can be set to one, and the coating area 210 is arranged between the two non-coating areas 220. In some embodiments, the coating area 210 and the non-coating area 220 can be respectively set to multiple, and the multiple coating areas 210 and the multiple non-coating areas 220 are alternately arranged.

[0063] The electrode plate 200 is clamped between the first clamping roller 181 and the second clamping roller 182. The first clamping roller 181 and the second clamping roller 182 are used to clamp the non-coating area 220 to reduce the fluctuation and jitter of the electrode plate 200, so that the part of the electrode plate 200 near the coating die head 110 remains stable, thereby improving the uniformity of the coating thickness of the electrode plate 200 and the coating quality of the coating device 100.

[0064] The height adjustment structure 183 is used to drive the first clamping roller 181 and the second clamping roller 182 to move integrally relative to the frame 101, so as to adjust the distance between the electrode plate 200 and the coating die head 110, which is beneficial to adjusting the distance between the electrode plate 200 and the coating die head 110 to meet the production requirements. Specifically, the height adjustment structure 183 includes a driving part 1831 and a mounting part 1832. The mounting part 1832 is mounted on the frame 101. The mounting part 1832 is movably arranged relative to the frame 101. The first clamping roller 181 and the second clamping roller 182 are both mounted on the mounting part 1832. The driving part 1831 is used to drive the mounting part 1832 to move relative to the frame 101, so that the mounting part 1832 drives the first clamping roller 181 and the second clamping roller 182 to move integrally relative to the frame 101. Among them, the height adjustment structure 183 can be configured as a lead screw-slider structure, the driving part 1831 can be configured as a lead screw, the mounting part 1832 can be configured as a slider, and the driving part 1831 is in threaded cooperation with the mounting part 1832. When the driving part 1831 is rotated, the mounting part 1832 can be made to move along the axial direction of the driving part 1831. In some embodiments, the height adjustment structure 183 can also be configured as other structures, which are not specifically limited in the present utility model. For example, the height adjustment structure 183 can also be configured as a gear-rack structure, the driving part 1831 can be configured as a gear, and the mounting part 1832 can be configured as a rack that is slidably matched with the frame 101. Another example is that the height adjustment structure 183 can also be configured as a cylinder structure, the driving part 1831 is configured as a cylinder body, and the mounting part 1832 is configured as a cylinder piston rod that cooperates with the cylinder body.

[0065] In some embodiments, the clamping device 180 further includes a first distance adjustment structure 184. The first distance adjustment structure 184 is used to adjust the distance between the first clamping roller 181 and the second clamping roller 182, so as to adjust the clamping force of the first clamping roller 181 and the second clamping roller 182 on the electrode plate 200, and to adjust the distance between the electrode plate 200 and the coating die head 110.

[0066] In some embodiments, the clamping device 180 further includes a second spacing adjustment structure 185. The adjustment accuracy of the second spacing adjustment structure 185 is greater than that of the first spacing adjustment structure 184. The second spacing adjustment structure 185 is used to more finely adjust the spacing between the first clamping roller 181 and the second clamping roller 182, so as to more finely adjust the clamping force of the first clamping roller 181 and the second clamping roller 182 on the electrode sheet 200, and is used to more finely adjust the distance between the electrode sheet 200 and the coating die head 110. Among them, the first spacing adjustment structure 184 is used to roughly adjust the distance between the first clamping roller 181 and the second clamping roller 182 to improve the adjustment efficiency, and the second spacing adjustment structure 185 is used to finely adjust the distance between the first clamping roller 181 and the second clamping roller 182, so that the first clamping roller 181 and the second clamping roller 182 have a suitable clamping force on the electrode sheet 200.

[0067] The second spacing adjustment structure 185 includes a fixing portion 1851, an abutting portion 1852 and a stopping portion 1853. The stopping portion 1853 is fixedly arranged relative to the first clamping roller 181. The fixing portion 1851 is fixedly arranged relative to the mounting portion 1832. A through hole is formed in the fixing portion 1851. The abutting portion 1852 is inserted into the through hole and is in threaded cooperation with the fixing portion 1851. One end of the abutting portion 1852 away from the fixing portion 1851 is abutted against the stopping portion 1853. The abutting portion 1852 is used to adjust the distance between the stopping portion 1853 and the fixing portion 1851. Specifically, the stopping portion 1853 is slidably connected to the fixing portion 1851. The first clamping roller 181 is mounted on the stopping portion 1853. An internal thread structure may be provided in the through hole of the fixing portion 1851, and the abutting portion 1852 is configured as a rod, and an external thread structure matching the internal thread structure is provided on the outer wall of the abutting portion 1852. When the abutting portion 1852 is rotated, the abutting portion 1852 can move along the axial direction of the through hole to push against the stopping portion 1853, so that the stopping portion 1853 drives the first clamping roller 181 to approach or move away from the second clamping roller 182.

[0068] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A coating device for coating electrode sheets, characterized in that, Comprising: A frame; A coating die head, slidably arranged relative to the frame, and the coating die head is used for coating a coating on the electrode plate; An adjusting device, installed on the frame, and the adjusting device is used for adjusting the distance between the coating die head and the electrode plate; A limiting device, fixedly connected to the frame; A die head driver, installed on the frame, and the die head driver is used for driving the coating die head to be in contact with the limiting device.

2. The coating device according to claim 1, wherein The coating device further includes a guiding roller and a clamping device. The coating die head is located between the guiding roller and the clamping device. The guiding roller and the coating die head are located on the same side of the electrode plate. The coating die head is in contact with the electrode plate. The separation point between the guiding roller and the electrode plate, the contact point between the coating die head and the electrode plate, and the clamping point between the clamping device and the electrode plate are collinearly arranged.

3. The coating device according to claim 1, wherein, The coating die head includes a first die body and a second die body. A slurry channel is formed between the first die body and the second die body. The first die body is located upstream of the second die body along the conveying path of the electrode plate. The first die body is in contact with the electrode plate. An arc portion is arranged at one end of the first die body close to the electrode plate. The second die body is spaced from the electrode plate.

4. The coating device according to claim 1, characterized in that, The limiting device includes a fixing structure and a stopping structure. The fixing structure is fixedly connected to the frame. The stopping structure is arranged on the fixing structure and extends outwards relative to the fixing structure in the direction towards the coating die head. One end of the stopping structure away from the fixing structure is used for being in contact with the coating die head.

5. The coating device according to claim 4, wherein The limiting device further includes an adjusting structure installed on the fixing structure, and the adjusting structure is used for adjusting the extending length of the stopping structure relative to the fixing structure.

6. The coating device according to claim 1, characterized in that, The adjusting device includes a first abutting member and a second abutting member. The first abutting member is movably installed on the frame. The second abutting member is slidably connected to the frame and is fixedly arranged relative to the coating die head. When the first abutting member moves relative to the second abutting member, the first abutting member is used for pushing the second abutting member to move relative to the frame, so that the second abutting member drives the coating die head to approach or move away from the electrode plate.

7. The coating device according to claim 6, characterized in that, The adjusting device further includes a base fixedly connected to the frame. The base has opposite first and second ends along the conveying path direction of the electrode plate. The first abutting member is installed on the base. The second abutting member is located on the side of the first abutting member away from the base; Along the direction of the first abutting member towards the second abutting member, the protruding height of the first abutting member relative to the base monotonically increases or decreases from the first end towards the second end; and / or, along the direction of the second abutting member towards the first abutting member, the protruding height of the second abutting member relative to the base monotonically increases or decreases from the first end towards the second end.

8. The coating device according to claim 6, wherein, The adjusting device further includes a driving member and a transmission member. The driving member is fixedly connected to the frame. The transmission member is in threaded cooperation with the first abutting member. The driving member is used to drive the transmission member to rotate. When the transmission member rotates, it drives the first abutting member to move relative to the frame.

9. The coating device according to claim 1, characterized in that, The coating device further includes a detection device, which is used to detect the distance between the coating die head and the electrode plate.

10. The coating device according to claim 2, wherein, The clamping device includes a height adjustment structure, a first clamping roller and a second clamping roller. The electrode plate is clamped between the first clamping roller and the second clamping roller. The height adjustment structure is used to drive the first clamping roller and the second clamping roller to move integrally relative to the frame.

11. The coating device according to claim 10, characterized in that, The clamping device further includes a first distance adjustment structure and a second distance adjustment structure. Both the first distance adjustment structure and the second distance adjustment structure are used to adjust the distance between the first clamping roller and the second clamping roller. The adjustment accuracy of the second distance adjustment structure is greater than that of the first distance adjustment structure.

12. The coating device according to claim 2, characterized in that, The coating device further includes a first driving structure, which is used to drive the guide roller to reciprocate in a first direction, and / or, the coating device further includes a second driving structure, which is used to drive the guide roller to reciprocate in a second direction. The first direction and the second direction are arranged at an angle.

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