Automatic scraper replacing device for gravure coating of lithium battery foil

Abstract

The invention discloses an automatic scraper replacing device for gravure coating of a lithium battery foil. A scraper propelling mechanism of the automatic scraper replacing device is used for controlling a scraper replacing mechanism of the automatic scraper replacing device to transversely move back and forth; the scraper replacing mechanism comprises a clip type scraper box and a scraper pushing plate capable of transversely moving back and forth. The bottom of the cartridge holder type scraper material box is provided with a scraper outlet groove for the scraper blade to fall down; the scraper pushing plate shields the scraper outlet groove, and a scraper clamping groove is formed in the edge of the scraper pushing plate; the scraper replacing mechanism is used for driving the scraper pushing plate to move so that the scraper clamping groove can move back and forth between the scraper outlet groove and the pressing part of the scraper pressing mechanism. The scraper pressing mechanism is used for adjusting the pressing tightness of the scraper blade; the clip type scraper material box is matched with the scraper replacing mechanism to replace the scraper blade, so that the complicated operation that an operator manually installs the scraper blade is omitted, the functions of automatic replacing and pressing are achieved in cooperation with the scraper pressing mechanism, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of scrapers for gravure coating of lithium battery foil, and in particular to an automatic replacement device for scrapers for gravure coating of lithium battery foil. Background Art

[0002] The gravure primer process is to soak the slurry in the material tray into the surface of the plate roller, scrape off the surface slurry through the scraper device, transfer the primer slurry quantitatively to the pits on the plate roller, and evenly transfer it to the surface of the substrate after passing through the rubber pressure roller. The cleanness of the scraper mechanism scraping the slurry directly affects the transfer effect of the substrate coating. As the coating progresses, the friction between the scraper and the plate roller causes the scraper to be replaced within a specified length of meters or time. When the gravure roller is running at a high speed and the plate roller is not scraped clean due to the wear of the scraper when transferring the primer slurry, it can directly cause the foil to be scrapped.

[0003] Among them, the specific problems of the prior art are as follows:

[0004] 1. When replacing the conventional scraper mechanism, it is necessary to manually adjust the slide table forward and backward to return the scraper to the appropriate position, loosen the locking screw of the scraper upper pressure plate, take out the old scraper, and then replace it. The operation is complicated and time-consuming.

[0005] 2. When replacing a new scraper, it is necessary to extract and cut it from the scraper box according to the corresponding length, which reduces work efficiency and delays production.

[0006] 3. The scraper clamping structure is manual clamping. When the width is wide, the rotating structure with handle has a large span of handles on both sides and the elastic force of the spring pressure plate, which makes it difficult to operate the rotating handle and open it. The other structure that clamps the scraper pressure plate with screws requires loosening a row of locking screws, which is also not convenient enough.

[0007] 4. The clamping cylinder of the scraper extension mechanism presses the scraper against the plate roller through the swing arm structure. The vertical installation of the cylinder occupies a large space, and the clamping and buffering effect is not ideal. Excessive pressure causes serious wear of the scraper, and too little pressure causes coating leakage.

[0008] Therefore, if the automatic replacement of the scraper can be achieved, it will be of great help to the existing technology. Summary of the invention

[0009] The purpose of the present invention is to provide a device for automatically replacing scrapers for gravure coating of lithium battery foil, so as to solve the problem that the prior art cannot realize automatic replacement of scrapers.

[0010] In order to solve the above technical problems, the present invention provides an automatic scraper replacement device for gravure coating of lithium battery foil, comprising a scraper propulsion mechanism, a scraper replacement mechanism arranged on the scraper propulsion mechanism, and a scraper pressing mechanism arranged on the scraper replacement mechanism; the scraper propulsion mechanism is used to control the scraper replacement mechanism to move back and forth laterally; the scraper replacement mechanism comprises a clip-type scraper material box and a scraper pushing plate that can move back and forth laterally; the interior of the clip-type scraper material box is used to stack scraper blades, and the clip-type scraper The bottom of the blade box is provided with a blade exit groove for the scraper blade to fall down, and the side of the blade exit groove facing the clamping part of the scraper clamping mechanism is provided with a first blade gap; the scraper pushing plate covers the blade exit groove, and a scraper clamping groove for placing the scraper blade is provided at the edge of the scraper pushing plate; the scraper replacement mechanism is used to drive the scraper pushing plate to move so that the scraper clamping groove moves back and forth between the blade exit groove and the clamping part of the scraper clamping mechanism; the scraper clamping mechanism is used to adjust the tightness of the clamping of the scraper blade.

[0011] In one of the embodiments, the scraper propulsion mechanism includes a propulsion slide, a first propulsion guide rail, a first propulsion slider and a propulsion cylinder; the propulsion slide is provided with the first propulsion guide rail and the propulsion cylinder; the first propulsion slider is slidably mounted on the first propulsion guide rail; the first propulsion slider is connected and fixed to the scraper replacement mechanism; the propulsion cylinder is connected and fixed to the scraper replacement mechanism, and the propulsion cylinder is used to drive the scraper replacement mechanism to move back and forth along the layout trajectory of the first propulsion guide rail.

[0012] In one of the embodiments, the scraper propulsion mechanism also includes a second propulsion slider, a second propulsion guide rail and a propulsion unit; the second propulsion slider is slidably mounted on the second propulsion guide rail; the second propulsion slider is connected and fixed to the propulsion slide plate; the propulsion unit is used to control the second propulsion slider to move back and forth on the second propulsion guide rail.

[0013] In one of the embodiments, the scraper replacement mechanism also includes a pushing fixed plate, a pushing guide rail, a pushing slider and a pushing cylinder; the pushing fixed plate is connected to the scraper propulsion mechanism in a manner that allows for linear reciprocating movement; the pushing guide rail is arranged on the pushing fixed plate; the pushing slider is slidably installed on the pushing guide rail, and the pushing slider is connected and fixed to the scraper pushing plate; the pushing cylinder is connected and fixed to the scraper pushing plate, and the propulsion cylinder is used to control the scraper pushing plate to move back and forth on the pushing guide rail.

[0014] In one embodiment, the scraper pressing mechanism includes a fixed seat and a scraper seat; the two fixed seats are respectively arranged on the opposite sides of the scraper pushing plate, and the scraper seat is supported on the two fixed seats; the scraper seat is arranged above the scraper pushing plate, the scraper seat and the clip-type scraper material box are arranged side by side, and a second blade gap is provided at the bottom of the scraper seat, and the second blade gap is arranged opposite to the first blade gap; the pressing part of the scraper pressing mechanism is arranged at the outlet of the second blade gap.

[0015] In one of the embodiments, the scraper clamping mechanism is provided with a scraper clamping sheet and an elastic sheet at its clamping position; the scraper clamping sheet and the elastic sheet are both arranged on the scraper seat; the elastic sheet elastically abuts against the scraper clamping sheet; the scraper clamping mechanism is used to adjust the elastic clamping force of the elastic sheet on the scraper clamping sheet, and the clamped scraper clamping sheet is used to clamp the scraper blade and fix it on the scraper slot.

[0016] In one of the embodiments, the scraper clamping mechanism is provided with a clamping cylinder on the two fixed seats, and the telescopic ends of the two clamping cylinders are provided with U-shaped joints, and the two U-shaped joints are rotatably connected to swing arms, and a circular pressure rod with a flat position is connected between the two swing arms, and the circular pressure rod is rotatably arranged in a circular arc groove on the scraper seat, and the circular pressure rod is arranged opposite to the elastic sheet; when the circular pressure rod is rotated to the arc surface opposite to the elastic sheet, the circular pressure rod is used to push the elastic sheet to press the scraper clamping sheet; when the circular pressure rod is rotated to the flat position opposite to the elastic sheet, the separation of the circular pressure rod and the elastic sheet is used to release the clamping of the scraper clamping sheet.

[0017] In one of the embodiments, the elastic sheet is provided with a waist hole, and the scraper pressing mechanism is provided with a screw passing through the waist hole to fix the elastic sheet on the scraper seat.

[0018] In one of the embodiments, a blade recovery box is provided on the scraper propulsion mechanism, and the blade recovery box is arranged below the pressing part of the scraper pressing mechanism.

[0019] In one of the embodiments, a vertical through slot is provided on the combined wall of the clip-type scraper box, a pressure plate is provided inside the clip-type scraper box, the pressure plate is connected to a handle, and the handle extends through the vertical through slot to the outside of the clip-type scraper box.

[0020] The beneficial effects of the present invention are as follows:

[0021] The present invention adopts a clip-type scraper material box and a scraper replacement mechanism to replace the scraper blade, eliminating the operator's complicated operation of manually installing the scraper blade, and cooperates with the scraper clamping mechanism to realize the functions of automatic replacement and clamping, thereby greatly improving work efficiency.

[0022] Moreover, after the automatic replacement of the scraper blade is realized, the automatic replacement of the scraper blade device can be carried out without stopping the machine. During the operation of the high-speed gravure coater, the waste of foil caused by rapid wear of the scraper blade and frequent and long-term shutdown for replacement of the scraper blade is avoided.

[0023] Furthermore, the coating action is that the scraper blade is pressed against the plate roller to scrape off the excess slurry on the plate roller, leaving the engraved area to be transferred to the foil, so the degree of compression and the amount of compression of the scraper blade directly affect the coating quality; and the scraper blade and the plate roller are pressed together by the propulsion unit adjustment and cylinder ejection, which solves and avoids the problem of missing coating caused by the scraper line. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure provided by an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 Structural schematic diagram of scraper propulsion mechanism;

[0027] Figure 3 yes Figure 1 Structural schematic diagram of scraper replacement mechanism;

[0028] Figure 4 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0029] Figure 5 yes Figure 3 Schematic diagram of the partial disassembly structure;

[0030] Figure 6 yes Figure 3 Schematic diagram of the disassembled structure of the clip-type scraper material box;

[0031] Figure 7 yes Figure 1 Structural schematic diagram of the scraper pressing mechanism;

[0032] Figure 8 yes Figure 7 A schematic diagram of the enlarged structure of part B;

[0033] Fig. 9 yes Figure 7 Schematic diagram of the scraper seat structure;

[0034] Fig.10 yes Figure 1 A partial side view structural diagram of .

[0035] The reference numerals are as follows:

[0036] 10. Scraper propulsion mechanism; 11. Propulsion slide; 121. First propulsion guide rail; 122. Second propulsion guide rail; 131. First propulsion slide block; 132. Second propulsion slide block; 14. Propulsion cylinder; 15. First retractable dust cover; 16. Propulsion unit; 17. First limit assembly;

[0037] 20. Scraper replacement mechanism; 21. Clip-type scraper material box; 211. Scraper outlet groove; 212. First knife gap; 213. Vertical through groove; 214. Pressing plate; 215. Handle; 22. Scraper push plate; 221. Scraper clamping groove; 23. Push fixing plate; 24. Push guide rail; 25. Push slider; 26. Push cylinder; 27. Second retractable dust cover; 28. Second limit assembly; 29. ​​Blade recovery box;

[0038] 30. Scraper clamping mechanism; 31. Fixed seat; 32. Scraper seat; 321. Second knife gap; 322. Arc-shaped groove; 33. Scraper clamping sheet; 34. Elastic sheet; 341. Screw; 35. Clamping cylinder; 36. U-shaped joint; 37. Swing arm; 38. Round pressure rod; 39. Third dust cover;

[0039] 40. Scraper blade;

[0040] 50. Plate roller. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0042] The present invention provides a device for automatically replacing scrapers for gravure coating of lithium battery foil, and the embodiment thereof is as follows: Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, it includes a scraper propulsion mechanism 10, a scraper replacement mechanism 20 arranged on the scraper propulsion mechanism 10, and a scraper pressing mechanism 30 arranged on the scraper replacement mechanism 20; the scraper propulsion mechanism 10 is used to control the scraper replacement mechanism 20 to move back and forth horizontally; the scraper replacement mechanism 20 includes a clip-type scraper material box 21 and a scraper pushing plate 22 that can move back and forth horizontally; the clip-type scraper material box 21 is used to stack and place scraper blades 40, and the bottom of the clip-type scraper material box 21 is provided with a scraper blade 40 for falling down The blade outlet groove 211 is provided with a first blade gap 212 on the side of the blade outlet groove 211 facing the clamping part of the scraper clamping mechanism 30; the scraper pushing plate 22 covers the blade outlet groove 211, and a scraper clamping groove 221 for placing the scraper blade 40 is provided at the edge of the scraper pushing plate 22; the scraper replacement mechanism 20 is used to drive the scraper pushing plate 22 to move so that the scraper clamping groove 221 moves back and forth between the blade outlet groove 211 and the clamping part of the scraper clamping mechanism 30; the scraper clamping mechanism 30 is used to adjust the clamping tightness of the scraper blade 40.

[0043] When used in conjunction with the plate roller 50, the scraper clamping mechanism 30 will clamp and fix the scraper blade 40, and then the scraper advancing mechanism 10 controls the scraper changing mechanism 20 to move toward the plate roller 50 until the scraper blade 40 abuts against the plate roller 50; if the scraper blade 40 needs to be replaced, the scraper clamping mechanism 30 can be controlled to release the clamping of the scraper blade 40, and the scraper changing mechanism 20 can be used to control the scraper pushing plate 22 to move away from the plate roller 50. At this time, the scraper blade 40 that has lost the clamping force will fall due to its own weight.

[0044] After the scraper push plate 22 moves away from the plate roller 50 to a certain distance, the scraper slot 221 will move to just below the blade outlet slot 211 , so that the scraper blades 40 in the clip-type scraper material box 21 will fall due to their own gravity, and the bottom scraper blade 40 will be just embedded in the scraper slot 221 .

[0045] At this time, the scraper pushing plate 22 is controlled to move toward the plate roller 50, and the scraper blade 40 in the scraper slot 221 can pass through the first blade gap 212 and finally reach the clamping position of the scraper clamping mechanism 30, so that the scraper clamping mechanism 30 can clamp the scraper blade 40 again.

[0046] It should be pointed out that in order to avoid the simultaneous conveying of multiple scraper blades 40, the height of the first blade gap 212 can be specifically designed; for example, when the scraper blade 40 is embedded in the scraper slot 221, the upper part of the scraper blade 40 will protrude, so that the top surface of the scraper blade 40 will be higher than the top surface of the scraper pushing plate 22, so at this time, it is only necessary to set the height of the first blade gap 212 to be flush with or match the top surface of the scraper blade 40, so that the remaining scraper blades 40 can be prevented from being output through the first blade gap 212 at the same time, ensuring that the remaining scraper blades 40 can only fall to the top surface of the scraper pushing plate 22 to wait for the next replacement operation of the scraper blade 40.

[0047] like Figure 1 and Figure 2 As shown, this embodiment provides a scraper propulsion mechanism 10 including a propulsion slide 11, a first propulsion guide rail 121, a first propulsion slider 131 and a propulsion cylinder 14; the propulsion slide 11 is provided with a first propulsion guide rail 121 and a propulsion cylinder 14; the first propulsion slider 131 is slidably mounted on the first propulsion guide rail 121; the first propulsion slider 131 is connected and fixed to the scraper replacement mechanism 20; the propulsion cylinder 14 is connected and fixed to the scraper replacement mechanism 20, and the propulsion cylinder 14 is used to drive the scraper replacement mechanism 20 to move back and forth along the arrangement trajectory of the first propulsion guide rail 121.

[0048] After adopting this setting method, the thrust cylinder 14 will use its own telescopic end to connect and fix with the scraper replacement mechanism 20, so when the thrust cylinder 14 controls its telescopic end to perform telescopic movement, the first thrust slider 131 and the first thrust guide rail 121 will be able to cooperate to achieve the movement trajectory limit of the scraper replacement mechanism 20, thereby realizing the linear reciprocating movement control of the scraper replacement mechanism 20.

[0049] In order to protect the propulsion cylinder 14, this embodiment also provides a first retractable dust cover 15, which is sleeved on the telescopic end of the propulsion cylinder 14, thereby realizing dust-proof protection for the propulsion cylinder 14 and extending the service life of the propulsion cylinder 14.

[0050] In addition, in this embodiment, a first limit assembly 17 is provided on the propulsion slide plate 11 to adjust the stroke of the propulsion cylinder 14 when it is retracted.

[0051] like Figure 1 and Figure 2 As shown, the scraper propulsion mechanism 10 of this embodiment also includes a second propulsion slider 132, a second propulsion guide rail 122 and a propulsion unit 16; the second propulsion slider 132 is slidably mounted on the second propulsion guide rail 122; the second propulsion slider 132 is connected and fixed to the propulsion slide plate 11; the propulsion unit 16 is used to control the second propulsion slider 132 to move back and forth on the second propulsion guide rail 122.

[0052] After adopting this setting method, once the propulsion unit 16 controls the second propulsion slider 132 to move on the second propulsion guide rail 122, the cooperation between the second propulsion slider 132 and the second propulsion guide rail 122 will limit the moving trajectory of the propulsion slide 11, thereby realizing the linear reciprocating movement control of the propulsion slide 11.

[0053] Among them, the propulsion unit 16 of this embodiment is a manual screw transmission structure, and the propulsion unit 16 is connected to the second propulsion slider 132 by screw transmission. Therefore, when the operator manually moves the propulsion unit 16, the screw transmission structure can be driven to rotate, thereby realizing corresponding movement control.

[0054] like Figure 1 , Figure 3 , Figure 5 As shown, the scraper replacement mechanism 20 of this embodiment also includes a pushing fixed plate 23, a pushing guide rail 24, a pushing slider 25 and a pushing cylinder 26; the pushing fixed plate 23 is connected to the scraper propulsion mechanism 10 in a manner that it can move back and forth in a straight line; the pushing guide rail 24 is arranged on the pushing fixed plate 23; the pushing slider 25 is slidably installed on the pushing guide rail 24, and the pushing slider 25 is connected and fixed to the scraper pushing plate 22; the pushing cylinder 26 is connected and fixed to the scraper pushing plate 22, and the propulsion cylinder 14 is used to control the scraper pushing plate 22 to move back and forth on the pushing guide rail 24.

[0055] After adopting this setting method, once the scraper propulsion mechanism 10 controls the push fixing plate 23 to move, the overall movement of the scraper replacement mechanism 20 can be realized; and since the push cylinder 26 will use its own telescopic end to connect and fix with the scraper push plate 22, when the push cylinder 26 controls its telescopic end to perform telescopic movement, the push slider 25 and the push guide rail 24 will cooperate to realize the movement trajectory limit of the scraper push plate 22, thereby realizing the linear reciprocating movement control of the scraper push plate 22.

[0056] In order to protect the pushing cylinder 26, this embodiment also provides a second retractable dust cover 27, which is sleeved on the telescopic end of the pushing cylinder 26, thereby realizing dust-proof protection for the pushing cylinder 26 and extending the service life of the pushing cylinder 26.

[0057] In addition, in this embodiment, a second limit assembly 28 is provided on the pushing fixing plate 23 to adjust the stroke of the pushing cylinder 26 when it is retracted.

[0058] like Figure 1 , Figure 7 , Figure 8 and Fig. 9As shown, in this embodiment, a scraper pressing mechanism 30 is provided, which includes a fixed seat 31 and a scraper seat 32; the two fixed seats 31 are respectively arranged on the opposite sides of the scraper pushing plate 22, and the scraper seats 32 are supported on the two fixed seats 31; the scraper seat 32 is arranged above the scraper pushing plate 22, the scraper seat 32 is arranged side by side with the clip-type scraper material box 21, and a second knife gap 321 is provided at the bottom of the scraper seat 32, the second knife gap 321 is arranged opposite to the first knife gap 212, and the second knife gap 321 runs through the opposite sides of the scraper seat 32; the pressing part of the scraper pressing mechanism 30 is arranged at the outlet of the second knife gap 321, that is, Figure 8 The scraper holder 32 is shown on the right side.

[0059] After adopting this setting method, the scraper pushing plate 22 will be able to move back and forth in a straight line under the scraper seat 32, and when the scraper pushing plate 22 uses the scraper slot 221 to assemble a new scraper blade 40 for replacement, the scraper blade 40 needs to pass through the first blade gap 212 and the second blade gap 321 to reach the clamping position of the scraper clamping mechanism 30.

[0060] The height setting requirements of the second blade gap 321 may refer to the height setting requirements of the first blade gap 212 mentioned above, so as to ensure that only one scraper blade 40 is transported to the clamping position of the scraper clamping mechanism 30 each time.

[0061] like Figure 1 , Figure 3 , Figure 8 As shown, in this embodiment, the scraper clamping mechanism 30 is provided with a scraper clamping sheet 33 and an elastic sheet 34 at its clamping position; the scraper clamping sheet 33 and the elastic sheet 34 are both arranged on the scraper seat 32; the elastic sheet 34 elastically abuts against the scraper clamping sheet 33; the scraper clamping mechanism 30 is used to adjust the elastic clamping force of the elastic sheet 34 on the scraper clamping sheet 33, and the clamped scraper clamping sheet 33 is used to clamp the scraper blade 40 and fix it on the scraper slot 221.

[0062] After adopting this setting method, once the scraper blade 40 has been delivered to the clamping position of the scraper clamping mechanism 30, the scraper clamping mechanism 30 can adjust the elastic clamping force of the elastic sheet 34 on the scraper clamping sheet 33, so that the clamped scraper clamping sheet 33 can press the scraper blade 40 and fix it on the scraper slot 221.

[0063] For example, the scraper clamping plate 33 of this embodiment is in a step shape. When it is not subjected to external force, the scraper clamping plate 33 will use its bottom plane to fit and abut against the scraper blade 40; and the elastic plate 34 of this embodiment is arranged obliquely above the scraper clamping plate 33, and the elastic plate 34 uses its lower right part to contact the upper surface of the scraper clamping plate 33. At this time, if the elastic plate 34 is not subjected to external force, the elastic plate 34 will not generate a force applied to the scraper clamping plate 33. However, once the elastic plate 34 is subjected to external force and generates a clockwise flipping trend, the elastic plate 34 will apply a downward pressure on the scraper clamping plate 33, so that the scraper clamping plate 33 can press the scraper blade 40 onto the scraper slot 221.

[0064] like Figure 1 , Figure 7 , Figure 8 and Fig. 9 As shown, this embodiment sets the scraper clamping mechanism 30 and is provided with clamping cylinders 35 on two fixed seats 31, and the telescopic ends of the two clamping cylinders 35 are provided with U-shaped joints 36, and the two U-shaped joints 36 are rotatably connected with swing arms 37, and a circular pressure rod 38 with a flat position is connected between the two swing arms 37. The circular pressure rod 38 is rotatably arranged in the arc-shaped groove 322 on the scraper seat 32, and the circular pressure rod 38 is arranged opposite to the elastic sheet 34; when the circular pressure rod 38 rotates to the arc surface opposite to the elastic sheet 34, the circular pressure rod 38 is used to push the elastic sheet 34 to press the scraper clamping sheet 33; when the circular pressure rod 38 rotates to the flat position opposite to the elastic sheet 34, the separation of the circular pressure rod 38 and the elastic sheet 34 is used to release the clamping of the scraper clamping sheet 33.

[0065] After adopting this setting, when the clamping cylinder 35 controls its telescopic end to perform telescopic movement, the U-shaped joint 36 can be used to drive the swing arm 37 to perform reciprocating swing movement, and the reciprocating swing movement of the swing arm 37 will drive the circular pressure rod 38 to rotate.

[0066] Therefore, when the circular pressure rod 38 rotates to the point where the arc surface is opposite to the elastic sheet 34, the arc surface of the circular pressure rod 38 will lift up the elastic sheet 34, causing the elastic sheet 34 to have a tendency to flip clockwise, and the elastic sheet 34 will use its lower part to apply a downward pressure force to the scraper clamping sheet 33, thereby achieving the clamping of the scraper blade 40.

[0067] When the circular pressure rod 38 rotates to a flat position opposite to the elastic sheet 34, the flat position of the circular pressure rod 38 will be parallel to the elastic sheet 34, so the force exerted by the circular pressure rod 38 on the elastic sheet 34 will disappear, causing the clamping force of the scraper blade 40 to disappear, thereby facilitating the subsequent replacement operation of the scraper blade 40.

[0068] In order to protect the clamping cylinder 35 , this embodiment further provides a third dust cover 39 , which is sleeved on the outside of the clamping cylinder 35 , thereby achieving dustproof protection for the clamping cylinder 35 and extending the service life of the clamping cylinder 35 .

[0069] like Figure 1 and Figure 8 As shown, in this embodiment, a waist hole is provided on the elastic sheet 34 , and a screw 341 is provided on the scraper pressing mechanism 30 to pass through the waist hole so as to fix the elastic sheet 34 on the scraper seat 32 .

[0070] After adopting this arrangement, the installation position between the elastic sheet 34 and the screw 341 has a certain movable space, which can realize the small-angle swing of the spring sheet.

[0071] like Figure 1 , Figure 3 , Figure 5 and Fig.10 As shown, in this embodiment, a blade recovery box 29 is provided on the scraper propulsion mechanism 10 , and the blade recovery box 29 is arranged below the pressing part of the scraper pressing mechanism 30 .

[0072] After adopting this setting method, if the scraper blade 40 needs to be replaced, the relative positions of the scraper propulsion mechanism 10 and the scraper pressing mechanism 30 can be adjusted so that the blade recovery box 29 is placed under the scraper blade 40 to be replaced. At this time, once the pressure on the scraper blade 40 is released, the scraper blade 40 will automatically fall into the blade recovery box 29 for recovery.

[0073] like Figure 3 and Figure 5 As shown, in this embodiment, a vertical through slot 213 is provided on the wall of the clip-type scraper material box 21 , a pressing plate 214 is provided inside the clip-type scraper material box 21 , and a handle 215 is connected to the pressing plate 214 , and the handle 215 passes through the vertical through slot 213 and extends to the outside of the clip-type scraper material box 21 .

[0074] After adopting this setting, the scraper blade 40 can be pre-cut according to the specifications of the clip-type scraper box 21 and then placed in the clip-type scraper box 21 to store multiple scraper blades 40 at the same time, so there is no need to re-draw and cut when replacing the scraper blade 40.

[0075] Furthermore, after the pressure plate 214 and the handle 215 are provided, the pressure plate 214 can be used to compress multiple scraper blades 40 to achieve clip-type delivery of the scraper blades 40. When it is necessary to add scraper blades 40, the pressure plate 214 can be taken out by simply using the handle 215, which is very convenient to operate.

[0076] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic scraper replacement device for gravure coating of lithium battery foil, characterized in that: It comprises a scraper propulsion mechanism, a scraper replacement mechanism arranged on the scraper propulsion mechanism, and a scraper pressing mechanism arranged on the scraper replacement mechanism; The scraper propulsion mechanism is used to control the scraper replacement mechanism to move back and forth horizontally; The scraper replacement mechanism comprises a clip-type scraper material box and a scraper pushing plate that can move back and forth laterally; the scraper blades are stacked and placed inside the clip-type scraper material box, and a blade outlet groove is provided at the bottom of the clip-type scraper material box for the scraper blades to fall down, and a first blade-passing gap is provided on the side of the blade outlet groove facing the pressing part of the scraper pressing mechanism; the scraper pushing plate shields the blade outlet groove, and a scraper clamping groove for placing the scraper blade is provided at the edge of the scraper pushing plate; the scraper replacement mechanism is used to drive the scraper pushing plate to move so that the scraper clamping groove moves back and forth between the blade outlet groove and the pressing part of the scraper pressing mechanism; The scraper blade clamping mechanism is used to adjust the tightness of the clamping of the scraper blade.

2. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 1, characterized in that: The scraper propulsion mechanism comprises a propulsion slide plate, a first propulsion guide rail, a first propulsion slide block and a propulsion cylinder; The propulsion slide is provided with the first propulsion guide rail and the propulsion cylinder; The first advancing slider is slidably mounted on the first advancing guide rail; The first propulsion slider is connected and fixed to the scraper replacement mechanism; The propulsion cylinder is fixedly connected to the scraper replacement mechanism, and the propulsion cylinder is used to drive the scraper replacement mechanism to move back and forth along the arrangement track of the first propulsion guide rail.

3. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 2, characterized in that: The scraper propulsion mechanism also includes a second propulsion slider, a second propulsion guide rail and a propulsion unit; The second advancing slide block is slidably mounted on the second advancing guide rail; The second propulsion sliding block is connected and fixed to the propulsion sliding plate; The propulsion unit is used to control the second propulsion slider to move back and forth on the second propulsion guide rail.

4. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 1, characterized in that: The scraper replacement mechanism also includes a push fixing plate, a push guide rail, a push slider and a push cylinder; The push fixing plate is connected to the scraper propulsion mechanism in a manner capable of linear reciprocating movement; The pushing guide rail is arranged on the pushing fixing plate; The pushing slider is slidably mounted on the pushing guide rail, and the pushing slider is connected and fixed to the scraper pushing plate; The pushing cylinder is connected and fixed to the scraper pushing plate, and the propulsion cylinder is used to control the scraper pushing plate to move back and forth on the pushing guide rail.

5. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 4, characterized in that: The scraper pressing mechanism comprises a fixing seat and a scraper seat; The two fixing seats are respectively arranged on two opposite sides of the scraper pushing plate, and the scraper seats are supported on the two fixing seats; The scraper seat is arranged above the scraper pushing plate, the scraper seat and the clip-type scraper material box are arranged side by side, and a second blade slit is arranged at the bottom of the scraper seat, and the second blade slit is arranged opposite to the first blade slit; The pressing part of the scraper pressing mechanism is arranged at the exit of the second blade gap.

6. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 5, characterized in that: The scraper pressing mechanism is provided with a scraper pressing sheet and an elastic sheet at its pressing position; The scraper pressing sheet and the elastic sheet are both arranged on the scraper seat; The elastic sheet is in elastic contact with the scraper pressing sheet; The scraper pressing mechanism is used to adjust the elastic pressing force of the elastic sheet on the scraper pressing sheet, and the pressed scraper pressing sheet is used to press the scraper blade to be fixed on the scraper clamping groove.

7. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 6, characterized in that: The scraper clamping mechanism is provided with a clamping cylinder on the two fixed seats, and the telescopic ends of the two clamping cylinders are provided with U-shaped joints, and the two U-shaped joints are rotatably connected with swing arms, and a circular pressure rod with a flat position is connected between the two swing arms, and the circular pressure rod is rotatably arranged in the arc-shaped groove on the scraper seat, and the circular pressure rod is arranged opposite to the elastic sheet; When the circular pressure rod rotates to the point where the arc surface is opposite to the elastic sheet, the circular pressure rod is used to push the elastic sheet to press the scraper pressing sheet; When the circular pressure rod is rotated to a flat position and is opposite to the elastic sheet, the separation of the circular pressure rod and the elastic sheet is used to release the pressure on the scraper pressure sheet.

8. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 6, characterized in that: The elastic sheet is provided with a waist hole, and the scraper pressing mechanism is provided with a screw passing through the waist hole so as to fix the elastic sheet on the scraper seat.

9. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 1, characterized in that: The scraper propulsion mechanism is provided with a blade recovery box, and the blade recovery box is arranged below the pressing part of the scraper pressing mechanism.

10. The automatic scraper replacement device for gravure coating of lithium battery foil according to claim 1, characterized in that: The combined wall of the clip-type scraper material box is provided with a vertical through slot, and a pressing plate is provided inside the clip-type scraper material box. The pressing plate is connected with a handle, and the handle extends through the vertical through slot to the outside of the clip-type scraper material box.

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