Automatic lip and mouth wiping device

Abstract

The utility model relates to an automatic lip mouth wiping device which comprises a mounting plate, a material groove, lip mouth wiping blocks, a clamping jaw and a linear driving module, the material groove where a plurality of lip mouth wiping blocks are stacked is formed in the mounting plate, the clamping jaw is movably arranged below the mounting plate and located at a discharging opening of the material groove, and the lip mouth wiping blocks in the material groove fall into a clamping opening of the clamping jaw through the gravity of the lip mouth wiping blocks. The lip mouth wiping block clamped by the clamping jaw is located at the same height as the die head lip mouth, the clamping jaw and the trough are in transmission connection with the driving end of the linear driving module through the mounting plate, and during wiping operation, the linear driving module drives the mounting plate to linearly move along the die head lip mouth so as to drive the lip mouth wiping block clamped by the clamping jaw to wipe the die head lip mouth; and when the wiping operation is not carried out, the mounting plate and the clamping jaw are positioned on the outer side of the die head so as to avoid the coating operation of the main roller of the coating machine and the die head. According to the utility model, the lip mouth of the die head is wiped and cleaned through the lip mouth wiping block, so that the consistency of subsequent coating is facilitated, and the production quality of pole piece coating is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery pole piece coating equipment, in particular to an automatic lip wiping nozzle device. Background Art

[0002] During the production of lithium battery pole pieces, the coating machine must evenly apply the slurry to the metal foil. The uniformity of the slurry coating has a significant impact on the product quality and performance of lithium batteries. In the actual production process, when the die head is used for coating, the slurry will continuously accumulate at the lip of the die head during use, resulting in slurry residue on the outer side of the die head lip. If it is not cleaned, when one batch of pole pieces is coated and the next batch of pole pieces is coated, the slurry remaining at the lip of the previous batch will adhere to the pole pieces of the next batch, resulting in the surface density of the next batch of pole pieces being affected, affecting the effect of the pole piece coating and the quality of the lithium battery products. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides an automatic lip wiping mouthpiece device.

[0004] The utility model provides an automatic lip wiping device, comprising a mounting plate, a material trough, a lip wiping nozzle block, a clamping claw and a linear drive module. A material trough for stacking a plurality of lip wiping nozzle blocks is provided on the mounting plate. The clamping claw is movably arranged below the mounting plate and is located at the material outlet of the material trough. The lip wiping nozzle blocks in the material trough fall into the clamping jaws of the clamping claws by their own gravity. The lip wiping nozzle blocks clamped by the clamping claws are located at the same height as the die lip. The clamping claws and the material trough are connected to the driving end of the linear drive module through the mounting plate. During the wiping operation, the linear drive module drives the mounting plate to move in a straight line along the die lip to drive the lip wiping nozzle block clamped by the clamping claws to wipe the die lip. When the wiping operation is not performed, the mounting plate and the clamping claws are located outside the die to avoid the coating operation of the main roller of the coater and the die.

[0005] In some embodiments, the linear drive module is a rodless cylinder, and the upper end of the mounting plate is fixed to the slide seat of the rodless cylinder.

[0006] In some embodiments, the material trough is composed of two guide rails fixed on a mounting plate, the guide rails are arranged along the length direction, and the guide rails are slidably connected to the lip wiping mouthpiece.

[0007] In some embodiments, the mounting plate is T-shaped, the wider horizontal end of the mounting plate is connected to the linear drive module, and the guide rails of the material trough and the finger cylinders of the clamp are respectively installed on the two side surfaces of the vertical end of the mounting plate.

[0008] In some embodiments, the clamp includes a finger cylinder, a connecting block and a clamping block. The finger cylinder is fixed on the mounting plate. The two clamping blocks are respectively connected to the two driving fingers of the finger cylinder through two connecting blocks. A clamping opening for clamping the lip wiping mouthpiece is formed between the two clamping blocks.

[0009] In some embodiments, the lip wiping nozzle block includes a sponge and a slider, one side of the sponge is fixed to the slider, and the other side is provided with a wiping portion for wiping the lip of the die head, the slider cooperates with the material trough and the clamping jaws, and the outer wall of the slider is provided with a slide groove, when the lip wiping nozzle block is in the material trough, the slide groove is slidably connected to the guide rail of the material trough to guide the lip wiping nozzle block to slide from the feed port of the material trough to the discharge port under the action of its own gravity, and the clamping block is provided with a guide protrusion on the clamping side, and the lip wiping nozzle block located at the discharge port slides into the clamping port under the guidance of the guide protrusion.

[0010] In some embodiments, a material receiving platform is further included, which is arranged on the moving path of the clamping jaws, and the material receiving platform is located below the clamping jaws. The material receiving platform is used to lift the waste lip wiper blocks that fall from the clamping jaws. A material receiving box for collecting the waste lip wiper blocks is provided on one side of the material receiving platform, and the clamping block is provided with a groove on one side of the guide protrusion, and the groove is used to push the waste lip wiper blocks that fall on the material receiving platform into the material receiving box.

[0011] In some embodiments, when the material receiving platform receives the used lip wiper block, the distance between the lowermost end of the clamping block and the material receiving platform is smaller than the width of the lip wiper block.

[0012] In some embodiments, the two clamping blocks of the clamping jaws cannot clamp the waste lip wiper block located on the material receiving platform through the groove.

[0013] In some embodiments, there are two material receiving platforms, and the two material receiving platforms are arranged outside the die along the moving path of the clamping jaws, and the distance between the two material receiving platforms is greater than the length of the die.

[0014] Compared with the prior art, the beneficial effects of the utility model are: wiping and cleaning the die lip by the lip wiping nozzle block is beneficial to the consistency of subsequent coating, ensuring the production quality of the electrode coating, and the components of the entire device are easy to assemble and maintain; the linear drive module drives the clamping jaws and the lip wiping nozzle block to wipe the die lip along a straight line, and the old and discarded lip wiping nozzle block is automatically replaced after wiping is completed, thereby improving the cleaning efficiency of the die lip, thereby improving the production efficiency of the electrode coating and increasing the benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the automatic lip wiping nozzle device, die head and main shaft assembled in an embodiment of the present application.

[0016] Figure 2 It is a schematic top view of the structure of the automatic lip wiping nozzle device, die head and main shaft assembled in an embodiment of the present application.

[0017] Figure 3 It is a side structural schematic diagram of the automatic lip wiping nozzle device, die head and main shaft assembled in an embodiment of the present application.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the automatic lip wiping mouthpiece device according to an embodiment of the present application.

[0019] Figure 5 It is a schematic diagram of the assembly structure of the mounting plate, material trough and clamping jaws of an embodiment of the present application.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the two clamping blocks of the clamping jaws of an embodiment of the present application clamping the lip wiping mouthpiece.

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the lip wiper block of an embodiment of the present application.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping block of an embodiment of the present application.

[0023] Figure 9 It is a schematic diagram of the planar structure of the two clamping blocks of the clamping jaws of the embodiment of the present application when clamping and releasing the lip wiping mouthpiece.

[0024] Reference numerals: 100, die head; 101, lip; 200, main shaft;

[0025] 1. Mounting plate;

[0026] 2. Material trough; 21. Guide rail; 22. Material outlet; 23. Material inlet;

[0027] 3. Lip wiper; 31. Sponge; 32. Slider; 33. Slide;

[0028] 4. Gripper; 41. Clamping jaw; 42. Finger cylinder; 43. Driving finger; 44. Connecting block; 45. Clamping block; 451. Guide protrusion; 452. Groove;

[0029] 5. Material receiving platform; 51. Mounting block;

[0030] 6. Material receiving box;

[0031] 7. Linear drive module; 71. Slide seat; 72. Slide rod. DETAILED DESCRIPTION

[0032] The specific implementation of the present utility model is introduced with reference to the accompanying drawings.

[0033] refer to Figure 1 , the figure is a schematic diagram of the three-dimensional structure of the automatic lip wiping device, the coating machine die head 100, and the main shaft 200. The automatic lip wiping device is installed between the die head 100 and the main shaft 200. When coating the electrode, the die head 100 squeezes the slurry into strips through the lip 101 onto the rotating main shaft 200, so that the cylindrical surface of the main shaft 200 is evenly covered with slurry. The main shaft 200 transfers the slurry to the electrode to complete the coating of the electrode. After long-term use, the die head 100 will have residual slurry at the lip 101. After pausing, the die head 100 will retreat a distance so that the lip 101 leaves the cylindrical surface of the main shaft 200. The residual slurry can be quickly cleaned by the automatic lip wiping device. After the lip 101 is cleaned, the die head 100 approaches the cylindrical surface of the main shaft 200 to coat the next batch of electrode pieces. The cleaned lip 101 of the die head 100 is conducive to the consistency of electrode coating.

[0034] refer to Figures 1 to 9 An automatic lip wiping device includes a mounting plate 1, a material trough 2, a lip wiping block 3, a clamping jaw 4, a material receiving platform 5, a material receiving box 6 and a linear drive module 7. The mounting plate 1 is provided with a material trough 2 on which a plurality of lip wiping blocks 3 are stacked. The clamping jaw 4 is movably arranged below the mounting plate 1 and is located at the material outlet 22 of the material trough 2. The lip wiping block 3 in the material trough 2 falls into the clamping opening 41 of the clamping jaw 4 by its own gravity. The lip wiping block 3 clamped by the clamping jaw 4 is located at the lip opening 100 of the die head 100. 1 are at the same height, the clamping jaws 4 and the trough 2 are connected to the driving end of the linear drive module 7 through the mounting plate 1. During the wiping operation, the linear drive module 7 drives the mounting plate 1 to move linearly along the lip 101 of the die head 100, so as to drive the lip wiping nozzle block 3 clamped by the clamping jaws 4 to wipe the lip 101 of the die head 100. When the wiping operation is not in progress, the mounting plate 1 and the clamping jaws 4 are located outside the die head 100 to avoid the main roller of the coater and the die head 100 during the coating operation.

[0035] The automatic lip wiping device of the embodiment of the present application wipes and cleans the lip 101 of the die head 100 through the lip wiping block 3, which is beneficial to the consistency of subsequent coating and ensures the production quality of electrode coating. The components of the entire device are easy to assemble and maintain; the linear drive module 7 drives the clamping jaws 4 and the lip wiping block 3 to wipe the lip 101 of the die head 100 along a straight line. After wiping is completed, the used lip wiping block 3 is automatically replaced, thereby improving the cleaning efficiency of the lip 101 of the die head 100, thereby improving the production efficiency of electrode coating.

[0036] In order to drive the clamping jaws 4 to move linearly along the lip 101 of the die head 100, in this embodiment, reference Figure 4 The linear drive module 7 is a rodless cylinder, and the upper end of the mounting plate 1 is fixed to the slide seat 71 of the rodless cylinder.

[0037] It can be understood that with such a setting, there are many types of linear drive modules 7. In this embodiment, a rodless cylinder is used as the linear drive module 7. The overall structure of the rodless cylinder is simple, which avoids taking up too much space in the coater and will not interfere with the coating operation of the die head 100 and the main shaft 200. The rodless cylinder has its own sliding rod 72, and the sliding rod 72 is parallel to the die head 100 and the main shaft 200. The slide seat 71 can move stably along the sliding rod 72, thereby driving the mounting plate 1 and the clamping jaw 4 to move stably along the lip 101 of the die head 100.

[0038] In order to facilitate the stable stacking of multiple lip wiping mouthpieces 3 in the material trough 2, in this embodiment, reference Figure 5 The material trough 2 is composed of two guide rails 21 fixed on the mounting plate 1. The guide rails 21 are arranged along the length direction, and the guide rails 21 are slidably connected to the lip wiping mouthpiece 3.

[0039] It can be understood that, with such an arrangement, a guide rail 21 is fixed on the mounting plate 1, and a material trough 2 is formed between the two guide rails 21. Above the material trough 2 is the feed port 23 of the lip wiping nozzle block 3, and below is the discharge port 22 of the lip wiping nozzle block 3. Under the action of gravity, the lip wiping nozzle block 3 can slide from the feed port 23 to the discharge port 22 along the guide rail 21, so that multiple lip wiping nozzle blocks 3 can be stacked in the material trough 2 in sequence.

[0040] In order to avoid interference between the mounting plate 1 and the clamping jaws 4 on the die head 100 and the main shaft 200, in this embodiment, Figure 5 The mounting plate 1 is T-shaped, the wider horizontal end of the mounting plate 1 is connected to the linear drive module 7, and the guide rails 21 of the trough 2 and the finger cylinder 42 of the clamping jaw 4 are respectively installed on both sides of the vertical end of the mounting plate 1.

[0041] It can be understood that, with such a configuration, the width of the vertical end of the mounting plate 1 is approximately the same as the width of the finger cylinder 42. While meeting the installation conditions of the finger cylinder 42 and the material trough 2, the width of the vertical end of the mounting plate 1 is as small as possible to reduce the space occupied by the mounting plate 1, thereby avoiding interference with the coating operation of the die head 100 and the main shaft 200.

[0042] In order to stably hold the lip wiping mouthpiece 3, in this embodiment, reference Figures 4 to 6 The clamping jaw 4 includes a finger cylinder 42, a connecting block 44 and a clamping block 45. The finger cylinder 42 is fixed on the mounting plate 1. The two clamping blocks 45 are respectively connected to the two driving fingers 43 of the finger cylinder 42 through two connecting blocks 44. A clamping opening 41 for clamping the lip wiping mouthpiece 3 is formed between the two clamping blocks 45.

[0043] It can be understood that, with such a setting, the two driving fingers 43 of the finger cylinder 42 are connected to the two clamping blocks 45 through the connecting block 44. The driving finger 43 drives the two clamping blocks 45 to move inward toward each other to clamp the lip wiping mouthpiece 3 at the clamping opening 41, and the driving finger 43 drives the two clamping blocks 45 to move outward to release the lip wiping mouthpiece 3 at the clamping opening 41.

[0044] In order to clean the die head 100 lip 101, in this embodiment, refer to Figures 5 to 7 The lip wiping nozzle block 3 includes a sponge 31 and a slider 32. One side of the sponge 31 is fixed to the slider 32, and the other side is set to a wiping part for wiping the lip 101 of the die head 100. The slider 32 cooperates with the material trough 2 and the clamping jaw 4. The outer wall of the slider 32 is provided with a slide groove 33. When the lip wiping nozzle block 3 is in the material trough 2, the slide groove 33 is slidably connected to the guide rail 21 of the material trough 2 to guide the lip wiping nozzle block 3 to slide from the feed port 23 of the material trough 2 to the discharge port 22 under the action of its own gravity. The clamping block 45 is provided with a guide protrusion 451 on the side of the clamping port 41. The lip wiping nozzle block 3 at the discharge port 22 slides into the clamping port 41 under the guidance of the guide protrusion 451.

[0045] It can be understood that, with such a configuration, the sponge 31 has a soft texture and can fit well with the lip 101 of the wrapped die head 100. At the same time, during the process of cleaning the lip 101 of the die head 100, the lip 101 will not be scratched, thereby avoiding affecting the discharge of the lip 101; the sponge 31 has many holes and can accommodate more residual slurry, ensuring that the lip wiping block 3 can wipe off the residual slurry at the lip 101 with one movement.

[0046] In order to automatically replace the lip wiping mouthpiece 3, in this embodiment, reference Figure 4 The material receiving platform 5 is arranged on the moving path of the clamping jaw 4, and the material receiving platform 5 is located below the clamping jaw 4. The material receiving platform 5 is used to lift the waste lip wiping nozzle block 3 falling from the clamping mouth 41. A material receiving box 6 for collecting the waste lip wiping nozzle block 3 is provided on one side of the material receiving platform 5. The clamping block 45 is provided with a groove 452 on one side of the guide protrusion 451. The groove 452 is used to push the waste lip wiping nozzle block 3 fallen on the material receiving platform 5 into the material receiving box 6.

[0047] It should be further explained that after the clamping jaws 4 have cleaned the lip 101 of the die head 100, they move to the material receiving platform 5, the clamping jaws 4 open the two clamping blocks 45, and the used and old lip wiping mouthpiece block 3 slides down to the material receiving platform 5 through the guide protrusion 451 by gravity, and the chute 33 of the used and old lip wiping mouthpiece block 3 has not yet completely separated from the guide protrusion 451, and the groove 452 on the lower side of the guide protrusion 451 cooperates with the used and old lip wiping mouthpiece block 3. At the same time, the new lip wiping mouthpiece block 3 in the material trough 2 slides down together under the action of its own gravity, and when the used and old lip wiping mouthpiece block 3 falls, When it reaches the material receiving platform 5, the new lip wiping nozzle block 3 next to the old lip wiping nozzle block 3 will slide to the guide protrusion 451 of the clamping block 45, and the clamping jaws 4 drive the two clamping blocks 45 to clamp the new lip wiping nozzle block 3, while the groove 452 corresponding to the old lip wiping nozzle block 3 cannot clamp the old lip wiping nozzle block 3, so that when the old lip wiping nozzle block 3 is subsequently pushed by the clamping block 45 along the material receiving platform 5 to the material receiving box 6, the old lip wiping nozzle block 3 can fall into the material receiving box 6 by itself, and the clamping jaws 4 clamp the new lip wiping nozzle block 3, thereby completing the replacement of the lip wiping nozzle block 3.

[0048] It can be understood that, with such arrangement, the multiple lip wiping mouthpieces 3 in the material trough 2 are stacked up in sequence. When the lip 101 of the die head 100 is cleaned, the lip wiping mouthpiece 3 of the bottom layer clamped by the clamping jaws 4 wipes the lip 101 of the die head 100. After wiping, it becomes a waste lip wiping mouthpiece 3 and needs to be replaced. The clamping jaws 4 move to the top of the material receiving platform 5, and the clamping jaws 4 release the waste lip wiping mouthpiece 3. Under the action of gravity, the waste lip wiping mouthpiece 3 slides down together with the multiple lip wiping mouthpieces 3 in the material trough 2 until the waste lip wiping mouthpiece 3 falls on the material receiving platform 5. Under the limitation of the guide protrusion 451, the waste lip wiping mouthpiece 3 It cannot move horizontally on the material receiving platform 5 by itself, so that the waste lip wiping nozzle block 3 and multiple lip wiping nozzle blocks 3 of the material trough 2 are stacked together on the material receiving platform 5, and the mounting plate 1, the material trough 2 and the clamping jaw 4 are also stationary on the material receiving platform 5 to avoid interfering with the coating operation of the die head 100 and the main shaft 200; the finger cylinder 42 of the clamping jaw 4 does not need to clamp the lip wiping nozzle block 3, which reduces the working time of the finger cylinder 42 and increases the service life of the finger cylinder 42. The finger cylinder 42 only needs to start clamping a new lip wiping nozzle block 3 on the upper layer of the waste lip wiping nozzle block 3 when the die head 100 lip 101 is cleaned next time, thereby reducing energy consumption.

[0049] In order to ensure that the waste lip wiping mouthpiece 3 can stably fall on the material receiving platform 5, in this embodiment, reference Figure 4 When the receiving platform 5 receives the waste lip wiping nozzle block 3, the distance between the lower end of the clamping block 45 and the receiving platform 5 is smaller than the width of the lip wiping nozzle block 3.

[0050] It can be understood that with such arrangement, when the used lip wiping nozzle block 3 falls from the clamping jaws 41 to the material receiving platform 5, in order to prevent the lip wiping nozzle block 3 in the material trough 2 from also falling onto the material receiving platform 5, the distance between the lower end of the clamping block 45 and the material receiving platform 5 is set to be smaller than the width of the lip wiping nozzle block 3, and the used lip wiping nozzle block 3 falls vertically onto the material receiving platform 5 under the guidance of the guide protrusion 451 and the slide groove 33, which can ensure that the used lip wiping nozzle block 3 cannot move along the material receiving platform 5 by itself, so that the used lip wiping nozzle block 3 and multiple lip wiping nozzle blocks 3 in the material trough 2 are stacked together on the material receiving platform 5, and after the clamping jaws 4 clamp the new lip wiping nozzle block 3 at the clamping jaws 41, the used lip wiping nozzle block 3 will move horizontally from the material receiving platform 5 to the material receiving box 6, and this translation process is achieved by the clamping block 45 pushing the used lip wiping nozzle block 3 to move through the groove 452.

[0051] In order to discard the lip wiping mouthpiece 3, the material receiving platform 5 can be pushed into the material receiving box 6. In this embodiment, the reference Figure 6 and Figure 9 The two clamping blocks 45 of the clamping jaws 4 cannot clamp the waste lip wiping mouthpiece 3 located on the material receiving platform 5 through the groove 452.

[0052] It should be further explained that a mounting block 51 is vertically provided on one side of the material receiving platform 5, and the material receiving platform 5 is fixed to the coating machine through the mounting block 51. The positions of the material receiving platform 5 and the material receiving box 6 are fixed and will not interfere with the coating operation of the die head 100 and the main shaft 200.

[0053] It can be understood that, with such a configuration, the material receiving box 6 is located on one side of the material receiving platform 5 and is arranged on the moving path of the clamp 4. When the lip 101 of the die head 100 needs to be cleaned, the finger cylinder 42 of the clamp 4 is started to clamp the new lip wiping nozzle block 3 at the clamp 41. Because there is a gap between the groove 452 and the waste lip wiping nozzle block 3, the two clamps 45 cannot clamp the waste lip wiping nozzle block 3. In the process of the linear drive module 7 driving the mounting plate 1 and the clamp 4 to move, the groove 452 part of the clamp 45 will push the waste lip wiping nozzle block 3 to move horizontally along the material receiving platform 5 until the waste lip wiping nozzle block 3 falls into the material receiving box 6 under the action of its own gravity, thereby completing the recovery of the waste lip wiping nozzle block 3.

[0054] In order to improve the cleaning effect, in this embodiment, reference Figure 2 and Figure 4 There are two receiving platforms 5 , and the two receiving platforms 5 are arranged outside the die head 100 along the moving path of the clamping jaws 4 . The distance between the two receiving platforms 5 is greater than the length of the die head 100 .

[0055] It can be understood that, with such an arrangement, a material receiving platform 5 is provided on each side of the die head 100 in the axial direction. When wiping and cleaning the lip 101 of the die head 100, the clamping jaws 4 and the lip wiping nozzle block 3 move back and forth driven by the linear drive module. When the clamping jaws 4 and the lip wiping nozzle block 3 stop at the material receiving platform 5 on the other side from the material receiving platform 5 on one side, the waste lip wiping nozzle block 3 that has wiped the lip 101 of the die head 100 once in one direction is replaced, so as to avoid the slurry adhered to the waste lip wiping nozzle block 3 from sticking back to the lip 101 of the die head 100 during the reciprocating process, thereby improving the cleaning effect.

[0056] In the embodiment of the present application, the linear drive module 7 drives the clamping jaws 4 and the lip wiping nozzle block 3 to wipe the lip 101 of the die head 100 in a straight line. After wiping, the old and waste lip wiping nozzle block 3 is automatically replaced through the material trough 2, the material receiving platform 5 and the clamping jaw 4, and the replaced old and waste lip wiping nozzle block 3 automatically falls into the material receiving box 6, thereby improving the cleaning efficiency of the lip 101 of the die head 100, thereby improving the production efficiency of the electrode coating; the open material trough 2 can facilitate the stacking of the lip wiping nozzle block 3, thereby improving the loading efficiency of the lip wiping nozzle block 3.

[0057] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic lip wiping device, characterized in that: The utility model comprises a mounting plate, a material trough, a lip wiping nozzle block, a clamping jaw and a linear drive module. A material trough for stacking a plurality of lip wiping nozzle blocks is provided on the mounting plate. The clamping jaw is movably arranged below the mounting plate and is located at the discharge port of the material trough. The lip wiping nozzle blocks in the material trough fall into the clamping jaws of the clamping jaws by their own gravity. The lip wiping nozzle blocks clamped by the clamping jaws are located at the same height as the lip of the die head. The clamping jaws and the material trough are connected to the driving end of the linear drive module through the mounting plate. During the wiping operation, the linear drive module drives the mounting plate to move in a straight line along the lip of the die head to drive the lip wiping nozzle block clamped by the clamping jaws to wipe the lip of the die head; when the wiping operation is not performed, the mounting plate and the clamping jaws are located outside the die head to avoid the coating operation of the main roller of the coater and the die head.

2. The automatic lip wiping device according to claim 1, characterized in that: The linear drive module is a rodless cylinder, and the upper end of the mounting plate is fixed to the slide seat of the rodless cylinder.

3. The automatic lip wiping device according to claim 1, characterized in that: The material trough is composed of two guide rails fixed on the mounting plate, the guide rails are arranged along the length direction, and the guide rails are slidably connected to the lip wiping mouthpiece.

4. The automatic lip wiping device according to claim 1, characterized in that: The mounting plate is T-shaped, the wider horizontal end of the mounting plate is connected to the linear drive module, and the guide rails of the material trough and the finger cylinders of the clamping claws are respectively installed on both sides of the vertical end of the mounting plate.

5. The automatic lip wiping device according to claim 1, characterized in that: The clamping jaws include a finger cylinder, a connecting block and a clamping block. The finger cylinder is fixed on the mounting plate. The two clamping blocks are respectively connected to the two driving fingers of the finger cylinder through two connecting blocks. A clamping opening for clamping the lip wiping mouthpiece is formed between the two clamping blocks.

6. The automatic lip wiping device according to claim 5, characterized in that: The lip wiping nozzle block includes a sponge and a slider, one side of the sponge is fixed to the slider, and the other side is provided with a wiping part for wiping the lip of the die head. The slider cooperates with the material trough and the clamping jaws, and the outer wall of the slider is provided with a slide groove. When the lip wiping nozzle block is in the material trough, the slide groove is slidably connected to the guide rail of the material trough to guide the lip wiping nozzle block to slide from the feed port of the material trough to the discharge port under the action of its own gravity. The clamping block is provided with a guide protrusion on the clamping port side, and the lip wiping nozzle block located at the discharge port slides into the clamping port under the guidance of the guide protrusion.

7. The automatic lip wiping device according to claim 6, characterized in that: It also includes a material receiving platform, which is arranged on the moving path of the clamping jaws, and the material receiving platform is located below the clamping jaws. The material receiving platform is used to lift the waste lip wiper blocks that fall from the clamping jaws. A material receiving box for collecting the waste lip wiper blocks is provided on one side of the material receiving platform, and the clamping block is provided with a groove on one side of the guide protrusion, and the groove is used to push the waste lip wiper blocks that fall on the material receiving platform into the material receiving box.

8. The automatic lip wiping device according to claim 7, characterized in that: When the material receiving platform receives the waste lip wiping nozzle block, the distance between the lowermost end of the clamping block and the material receiving platform is smaller than the width of the lip wiping nozzle block.

9. The automatic lip wiping device according to claim 7, characterized in that: The two clamping blocks of the clamping jaws cannot clamp the waste lip wiping mouth piece located on the material receiving platform through the groove.

10. The automatic lip wiping device according to claim 7, characterized in that: There are two material receiving platforms, which are arranged outside the die head along the moving path of the clamping jaws, and the distance between the two material receiving platforms is greater than the length of the die head.

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