Scraper quick-changing device, coating machine material box and coating machine

Abstract

The invention discloses a scraper quick-changing device, a coating machine material box and a coating machine. The scraper quick-changing device comprises a scraper changing bottom plate, a guide device and a scraper fixing plate driving device are arranged on the scraper changing bottom plate, a scraper fixing plate is arranged on the guide device, a scraper fixing concave position is arranged on the scraper fixing plate, and the scraper fixing concave position is arranged on the scraper fixing concave position. A scraper bin is further arranged on the scraper replacement bottom plate, a scraper pressing plate driving device is further included, and a scraper pressing plate is arranged at the output end of the scraper pressing plate driving device; the coating machine material box comprises the scraper quick-changing device. A material box adopted by the coating machine is provided with a scraper quick-changing device, or the coating machine comprises the material box of the coating machine. The scraper quick-changing device, the coating machine material box and the coating machine have the advantages of being simple in structure and easy to implement, operation difficulty and labor cost can be reduced when the scraper quick-changing device is applied, and production efficiency and production benefits are improved.

Description

Technical Field

[0001] The invention relates to the field of lithium battery coating, in particular to a scraper quick-change device, a coating machine material box and a coating machine. Background Art

[0002] In the production of lithium batteries, coating process is the core process. Among them, gravure coating is a commonly used method for producing functional film materials in the lithium battery industry. It has the advantages of uniform coating, thin coating thickness and applicability to different solutions.

[0003] In the existing gravure coating process, the coating material box is one of the core components. In the gravure coating process, the material box is divided into two structures: open and closed. The closed material box is modified and adjusted on the basis of the open material box. An opening is set on the side of the material box close to the plate roller, and the single-sided scraper is changed to a two-way scraper. The plate roller and the scraper of the material box are tightly attached to achieve sealing. When the existing closed material box scraper is used to coat the functional film material, the scraper on one side of the material box is in contact with the high-speed rotating plate roller for a long time, causing the scraper to wear and deform, affecting the quality of the coating operation, and requiring frequent replacement; and the scraper in the existing sealed material box is fixed by the scraper pressure plate and bolt locking. To replace the worn scraper, all bolts need to be removed, and the scraper pressure plate is removed and replaced with a new scraper, and the scraper pressure plate and bolts are locked again. The steps are cumbersome, time-consuming and labor-intensive, which seriously affects the production efficiency of coating.

[0004] Therefore, the purpose of the present invention is to provide a new technical solution to solve the existing technical problems. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a scraper quick-change device, a coater material box and a coater, which solve the technical defects of the prior art such as the need to disassemble bolts to replace the scraper, the troublesome scraper replacement, time-consuming and labor-intensive, and affecting production efficiency.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A scraper quick-change device comprises a scraper replacement base plate, a guide device and a scraper fixing plate driving device are arranged on the scraper replacement base plate, a scraper fixing plate is arranged on the guide device, a scraper fixing recess for installing a scraper is arranged on the scraper fixing plate, an output end of the scraper fixing plate driving device is connected to the scraper fixing plate and can drive the scraper fixing plate to move along the guide direction of the guide device, a scraper bin is also arranged on the scraper replacement base plate, the scraper bin is used to store spare scrapers, and the scraper bin is located above the scraper fixing plate , also includes a scraper pressure plate driving device fixedly connected to the scraper replacement base plate or the scraper magazine, a scraper pressure plate is provided at the output end of the scraper pressure plate driving device, and the scraper pressure plate driving device is used to drive the scraper pressure plate to press against the scraper fixing plate and press the scraper in the scraper fixing recess; when the scraper fixing plate driving device drives the scraper fixing plate to move on the guide device and makes the scraper fixing recess reach the position below the scraper magazine and match the scraper magazine, the spare scraper in the scraper magazine can fall into the scraper fixing recess.

[0008] As a further improvement of the above technical solution, a wall surface on the scraper pressing plate close to the scraper fixing plate is a scraper pressing surface, a rubber strip installation groove is provided in the middle of the scraper pressing surface, and a scraper pressing rubber strip is provided in the rubber strip installation groove; and / or

[0009] The guiding device is a linear guide rail group, and there are two groups of linear guide rail groups. The linear guide rail group includes a linear guide rail and an adapted slide rail seat. The linear guide rail is installed on the scraper replacement base plate, and the scraper fixing plate is installed on the linear guide rail through the slide rail seat.

[0010] As a further improvement of the above technical solution, the scraper magazine is fixedly installed on the side of the scraper replacement base plate through a scraper magazine fixing plate.

[0011] As a further improvement of the above technical solution, the scraper magazine has a accommodating cavity, the spare scraper is accommodated in the accommodating cavity, a scraper pressing block is arranged in the accommodating cavity, and the scraper pressing block is used to press on the spare scraper.

[0012] As a further improvement of the above technical solution, there are two scraper magazines, which are symmetrically distributed. The scraper magazines are one-piece molded parts. The scraper magazines include a first limiting side plate and a second limiting side plate and an end connecting plate connected between the ends of the first limiting side plate and the second limiting side plate. The internal space jointly defined by the end connecting plate and the first limiting side plate and the second limiting side plate is the accommodating cavity, and the spare scraper and both ends of the scraper block are accommodated in the accommodating cavity.

[0013] As a further improvement of the above technical solution, the end connecting plate of the scraper magazine extends outwardly with an end connecting protrusion, and the scraper magazine fixing plate is an L-shaped fixing plate, one end of the L-shaped fixing plate is fixedly connected to the end connecting protrusion by a screw, and the other end of the L-shaped fixing plate is fixedly connected to the side of the scraper replacement bottom plate by a screw;

[0014] The end connecting plate of the scraper magazine is provided with a pressing block guide groove from top to bottom, and a pressing block guide portion is extended outward from the end of the scraper pressing block, and the pressing block guide portion passes through the pressing block guide groove.

[0015] As a further improvement of the above technical solution, the scraper bin and the scraper bin fixing plate are both made of steel.

[0016] As a further improvement of the above technical solution, the scraper fixing plate driving device is a scraper fixing plate driving cylinder and there are two scraper fixing plate driving cylinders, the scraper fixing plate driving cylinder is installed at the bottom of the scraper replacement base plate through a first cylinder mounting seat, the scraper fixing plate driving cylinder is fixedly connected to the bottom of the cylinder fixing plate through a cylinder connecting block, and a base plate avoidance groove for passing the cylinder connecting block is opened in the middle position of the scraper replacement base plate;

[0017] The scraper plate driving device is a scraper plate driving cylinder and there are two scraper plate driving cylinders. The scraper plate driving cylinder is installed on one side of the scraper bin through a second cylinder mounting seat, and the scraper plate is fixedly installed on the output shaft of the scraper plate driving cylinder.

[0018] As a further improvement of the above technical solution, the bottom of the scraper magazine is provided with a scraper fixing recess adapted to the scraper fixing plate, the recess depth of the scraper fixing recess is less than the thickness of the scraper, the recess depth of the scraper bottom recess is less than the thickness of the scraper, and the sum of the recess depth of the scraper fixing recess and the recess depth of the scraper bottom recess is greater than the thickness of the scraper and less than twice the thickness of the scraper.

[0019] As a further improvement of the above technical solution, the depth of the scraper fixing recess is 80% of the scraper thickness, and the depth of the recess at the bottom of the scraper bin is 30% of the scraper thickness.

[0020] The present invention also provides:

[0021] A coating machine material box comprises a material box body and the scraper quick-change device.

[0022] The present invention also provides:

[0023] A coating machine, wherein the material box used by the coating machine is provided with the scraper quick-change device or the coating machine includes the coating machine material box.

[0024] The beneficial effects of the present invention are as follows: the present invention provides a scraper quick-change device, a coating machine material box and a coating machine. When the scraper quick-change device, the coating machine material box and the coating machine need to replace the scraper, the scraper pressure plate is first loosened by the scraper pressure plate driving device, and then the scraper fixing plate is driven by the scraper fixing plate driving device to retreat. During the retreat of the scraper fixing plate, the spare scraper in the scraper bin will push off the worn scraper and drop into the scraper fixing groove, and then the scraper fixing plate driving device will push the new scraper that has fallen into the scraper fixing recess forward to a preset position, and finally the scraper pressure plate driving device drives the scraper pressure plate to press the new scraper into the scraper fixing recess, thereby completing the scraper replacement work. The entire scraper replacement work is automated, avoiding the trouble of frequently screwing screws to replace the scraper, reducing labor intensity and labor costs, saving time, and greatly improving production efficiency.

[0025] In summary, this scraper quick-change device, coater material box and coater solve the technical defects of the prior art, such as the need to disassemble bolts to replace the scraper, the troublesome scraper replacement, time-consuming and labor-intensive, and the impact on production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the assembly of the scraper quick-change device of the present invention;

[0028] Figure 2 It is another assembly schematic diagram of the scraper quick-change device of the present invention;

[0029] Figure 3 It is a schematic diagram of the assembly of the scraper quick-change device at a third angle in the present invention;

[0030] Figure 4 yes Figure 3 Sectional view in the AA direction;

[0031] Figure 5 yes Figure 4 A partial enlarged view of B in the middle;

[0032] Figure 6 It is a structural schematic diagram of the scraper bin in the present invention;

[0033] Figure 7 It is another structural schematic diagram of the scraper bin in the present invention;

[0034] Figure 8 yes Figure 7 A partial enlarged view of C in the middle. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other. Reference Figure 1-8 .

[0036] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 The present invention provides: a scraper quick-change device, including a scraper replacement base plate 1, the scraper replacement base plate 1 is provided with a guide device 2 and a scraper fixing plate driving device 3, the guide device 2 is provided with a scraper fixing plate 4, the scraper fixing plate 4 is provided with a scraper fixing recess 41 for installing a scraper 9, the output end of the scraper fixing plate driving device 3 is connected to the scraper fixing plate 4 and can drive the scraper fixing plate 4 to move along the guide direction of the guide device 2, the scraper replacement base plate 1 is also provided with a scraper bin 5, the scraper bin 5 is used to store spare scrapers 9, and the scraper bin 5 is located on the scraper fixing plate 4, it also includes a scraper pressing plate driving device 6 fixedly connected to the scraper replacement base plate 1 or the scraper magazine 5, and a scraper pressing plate 7 is provided at the output end of the scraper pressing plate driving device 6. The scraper pressing plate driving device 6 is used to drive the scraper pressing plate 7 to press against the scraper fixing plate 4 and press the scraper 9 to the scraper fixing recess 41. When the scraper fixing plate driving device 3 drives the scraper fixing plate 4 to move on the guide device 2 and makes the scraper fixing recess 41 reach the position below the scraper magazine 5 and match the scraper magazine 5, the spare scraper 9 in the scraper magazine 5 can fall into the scraper fixing recess 41.

[0037] When in use, there is no scraper 9 in the scraper fixing recess 41 of the scraper fixing plate 4, and a spare new scraper 9 is stored in the scraper bin 5. When working for the first time, the scraper pressing plate driving device 6 drives the scraper pressing plate 7 to lift and move away from the scraper fixing plate 4, so that there is no interaction force between the scraper fixing plate 4 and the scraper pressing plate 7. Then, the scraper fixing plate driving device 3 drives the scraper fixing plate 4 to move backward on the guide device 2 until the scraper fixing recess 41 on the scraper fixing plate 4 moves to a position that fits the scraper bin 5, and the scraper fixing plate driving device 3 drives the scraper fixing plate 4 to stop. At this time, among the new scrapers 9 stored in the scraper bin 5, the bottom scraper 9 falls into the scraper fixing recess 41 of the scraper fixing plate 4. Further, the scraper fixing plate driving device 3 drives the scraper fixing plate 4 to move forward, and at the same time, a scraper 9 that falls into the scraper fixing groove 41 moves forward together with the scraper fixing plate 4, until the scraper 9 moves to the preset installation position, and then the scraper fixing plate driving device 3 drives the scraper fixing plate 4 and the scraper 9 to stop. After the scraper stops, the scraper pressing plate driving device 6 drives the scraper pressing plate 7 to press against the scraper 9, so that the scraper 9 is pressed tightly at the scraper fixing recess 41. At this time, the scraper is installed, and the scraper 9 subsequently carries out normal coating work.

[0038] After working for a period of time, the scraper 9 is worn out and becomes an old scraper and needs to be replaced. At this time, the coating machine stops working. Then the scraper pressure plate driving device 6 drives the scraper pressure plate 7 to rise, and the old scraper is loosened. Further, the scraper fixing plate driving device 3 drives the scraper fixing plate 4 and the old scraper to move backward. During the backward movement of the old scraper, the edge of the scraper 9 at the bottom of the scraper bin 5 contacts the rear edge of the old scraper and pushes the old scraper out of the scraper fixing recess 41, thereby separating the old scraper. Further, after the old scraper falls out of the scraper fixing recess 41, the scraper fixing plate 4 continues to move backward until the scraper fixing recess 41 moves to a position that fits the scraper bin 5, repeats the above process, and installs a new scraper 9 in the scraper fixing recess 41 to complete the automatic replacement of the scraper. There is no need to remove bolts and other work, which greatly reduces the difficulty of work and labor costs, greatly saves production time and improves production efficiency.

[0039] Reference Figure 2 , Figure 4 , Figure 5 In this embodiment, a wall surface on the scraper pressing plate 7 close to the scraper fixing plate 4 is a scraper pressing surface, and a rubber strip installation groove 71 is provided in the middle of the scraper pressing surface. A scraper pressing rubber strip 72 is arranged in the rubber strip installation groove 71. The scraper pressing rubber strip 72 can further improve the degree of pressing on the scraper 9 to avoid looseness, making the pressing force more uniform and more stable and reliable during operation.

[0040] Reference Figure 6, Figure 7 In this embodiment, in the above technical solution, the scraper magazine 5 is fixedly installed on the side of the scraper replacement base plate 1 through a scraper magazine fixing plate 500. The scraper magazine 5 has a accommodating chamber 50, and the spare scraper 9 is accommodated in the accommodating chamber 50. A scraper pressing block 8 is provided in the accommodating chamber 50, and the scraper pressing block 8 is used to press on the spare scraper 9. When used, the scraper 9 at the bottom of the scraper magazine 5 falls into the scraper fixing recess 41 by its own gravity and the gravity of the scraper pressing block 8. By providing the scraper pressing block 8, the scraper 9 can be more easily dropped into the scraper fixing recess 41, avoiding the situation where the scraper 9 cannot smoothly fall into the scraper fixing recess 41 due to the friction between it and the side of the scraper magazine 5, thereby improving the reliability of the device.

[0041] Reference Figure 6 , Figure 7 , further, in this embodiment, there are two scraper bins 5, and the two scraper bins 5 are symmetrically distributed. In other embodiments, the two scraper bins 5 can also be formed as a whole, and a suitable specific method is selected according to specific needs or manufacturing processes. The scraper bin 5 is an integrally formed part, and the scraper bin 5 includes a first limiting side plate 51 and a second limiting side plate 52 and an end connecting plate 53 connected between the ends of the first limiting side plate 51 and the second limiting side plate 52. The internal space defined by the end connecting plate 53 and the first limiting side plate 51 and the second limiting side plate 52 is the accommodating cavity 50. Since there are two scraper bins 5 in this embodiment, the two ends of the spare scraper 9 and the scraper pressing block 8 are accommodated in the accommodating cavity 50. The middle position of the spare scraper 9 and the scraper pressing block 8 is not accommodated in the accommodating cavity 50 of the scraper bin 5, and the user observes the status of the spare scraper 9 and the scraper pressing block 8.

[0042] Reference Figure 6 , Figure 7 , further, the end connecting plate 53 of the scraper magazine 5 extends outwardly with an end connecting protrusion 54, and the scraper magazine fixing plate 500 is an L-shaped fixing plate, one end of the L-shaped fixing plate is fixedly connected to the end connecting protrusion 54 by screws, and the other end of the L-shaped fixing plate is fixedly connected to the side of the scraper replacement base plate 1 by screws; the end connecting plate 53 and the end connecting protrusion 54 jointly assume the function of connecting the first limiting side plate 51 and the second limiting side plate 52 into a whole. In addition, the end connecting plate 53 of the scraper magazine 5 is provided with a pressure block guide groove 55 from top to bottom, and the end of the scraper pressure block 8 extends outwardly with a pressure block guide portion 81, and the pressure block guide portion 81 passes through the pressure block guide groove 55. The stability of the device can be further improved by the matching structure of the pressure block guide portion 81 and the pressure block guide groove 55.

[0043] In addition, in the embodiment, when the scraper fixing plate 4 moves horizontally back and forth, in order to prevent damage to the entire device caused by metal friction, the scraper bin 5 and the scraper bin fixing plate 500 are both made of steel components, which can minimize wear damage.

[0044] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 In this embodiment, the scraper fixing plate driving device 3 is a scraper fixing plate driving cylinder, and there are two scraper fixing plate driving cylinders. In other embodiments, other existing components that can realize linear drive and meet the performance requirements, such as oil cylinders, electric cylinders, linear motors, etc., can also be used to replace the scraper fixing plate driving cylinder, which can be selected according to the implementation needs. Specifically, the scraper fixing plate driving cylinder is installed at the bottom of the scraper replacement base plate 1 through the first cylinder mounting seat 31, and the scraper fixing plate driving cylinder is fixedly connected to the bottom of the cylinder fixing plate 4 through the cylinder connecting block 32. The scraper replacement base plate 1 is provided with a bottom plate avoidance groove 11 for passing through the cylinder connecting block 32 in the middle position; the scraper pressure plate driving device 6 is a scraper pressure plate driving cylinder, and there are two scraper pressure plate driving cylinders. In other embodiments, other existing components that can realize linear drive and meet the performance requirements, such as oil cylinders, electric cylinders, linear motors, etc., can also be used to replace the scraper pressure plate driving cylinder, which can be selected according to the implementation needs. Specifically, the scraper plate driving cylinder is mounted to one side of the scraper magazine 5 through a second cylinder mounting seat (not shown in the figure), and the scraper plate 7 is fixedly mounted on the output shaft of the scraper plate driving cylinder.

[0045] Reference Figure 1 , Figure 4 , Figure 5 In this embodiment, the guide device 2 is a linear guide rail group, and the linear guide rail group has two groups. In other embodiments, other guide members that can meet the performance requirements can also be used to replace the linear guide rail group, such as guide columns, linear bearings, guide grooves, etc., which can be selected according to implementation needs. The linear guide rail group includes a linear guide rail and an adapted slide rail seat, the linear guide rail is installed on the scraper replacement base plate 1, and the scraper fixing plate 4 is installed on the linear guide rail through the slide rail seat.

[0046] Reference Figure 4 , Figure 5 Figure 6 , Figure 7 , Figure 8In the above embodiment, in order to ensure that the scraper 9 falling into the scraper fixing recess 41 can smoothly leave the scraper bin 5 from one side of the scraper bin 5, and also to ensure that the worn old scraper can be smoothly separated from the scraper fixing recess 41 of the scraper fixing plate 4, a scraper bin bottom recess 56 adapted to the scraper fixing recess 41 of the scraper fixing plate 4 is provided at the bottom of the scraper bin 5, the recess depth of the scraper fixing recess 41 is less than the thickness of the scraper 9, the recess depth of the scraper bin bottom recess 56 is less than the thickness of the scraper 9, and the sum of the recess depths of the scraper fixing recess 41 and the scraper bin bottom recess 56 is greater than the thickness of the scraper 9 and less than twice the thickness of the scraper 9. Specifically in this embodiment, the recess depth of the scraper fixing recess 41 is 80% of the thickness of the scraper 9, and the recess depth of the scraper bin bottom recess 56 is 30% of the thickness of the scraper 9.

[0047] Based on the above scraper quick-change device, the present invention also provides:

[0048] A coating machine material box comprises a material box body and the scraper quick-change device.

[0049] Based on the above-mentioned scraper quick-change device and coating machine material box, the present invention also provides:

[0050] A coating machine, wherein the material box used by the coating machine is provided with the scraper quick-change device or the coating machine includes the coating machine material box.

[0051] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A scraper quick-change device, characterized in that: The invention comprises a scraper replacement base plate (1), wherein the scraper replacement base plate (1) is provided with a guide device (2) and a scraper fixing plate driving device (3), wherein the guide device (2) is provided with a scraper fixing plate (4), wherein the scraper fixing plate (4) is provided with a scraper fixing recess (41) for mounting a scraper (9), wherein the output end of the scraper fixing plate driving device (3) is connected to the scraper fixing plate (4) and can drive the scraper fixing plate (4) to move along the guide direction of the guide device (2), wherein the scraper replacement base plate (1) is also provided with a scraper bin (5), wherein the scraper bin (5) is used to store spare scrapers (9), wherein the scraper bin (5) is located above the scraper fixing plate (4), and further comprises a scraper fixing recess (41) for mounting a scraper (9), wherein the output end of the scraper fixing plate driving device (3) is connected to the scraper fixing plate (4) and can drive the scraper fixing plate (4) to move along the guide direction of the guide device (2), wherein the scraper replacement base plate (1) is provided with a scraper bin (5), wherein the scraper bin (5) is used to store spare scrapers (9), wherein the scraper bin (5) is located above the scraper fixing plate (4), and further comprises a scraper fixing recess (41) for mounting a scraper (9), wherein the scraper fixing recess (41) is provided with a scraper fixing recess (41) for mounting a scraper (9), wherein the output end of the scraper fixing plate driving device (3) is connected to the scraper fixing plate (4) and can drive the scraper fixing plate (4) to move along the guide direction of the guide device (2), wherein the scraper fixing plate (4) is provided with a scraper bin (5), wherein the scraper bin (5) is used to store spare scrapers (9), wherein the scraper bin (5) is located above the scraper fixing plate (4), and further comprises a scraper fixing recess (41) for mounting a scraper (9), wherein the scraper fixing recess (41) is A scraper pressure plate driving device (6) fixedly connected to the scraper replacement base plate (1) or the scraper magazine (5), wherein a scraper pressure plate (7) is arranged at the output end of the scraper pressure plate driving device (6), and the scraper pressure plate driving device (6) is used to drive the scraper pressure plate (7) to press against the scraper fixing plate (4) and press the scraper (9) against the scraper fixing recess (41); when the scraper fixing plate driving device (3) drives the scraper fixing plate (4) to move on the guide device (2) and makes the scraper fixing recess (41) reach a position below the scraper magazine (5) and matching the scraper magazine (5), the spare scraper (9) in the scraper magazine (5) can fall into the scraper fixing recess (41).

2. A scraper quick-change device according to claim 1, characterized in that: A wall surface of the scraper pressing plate (7) close to the scraper fixing plate (4) is a scraper pressing surface, a rubber strip installation groove (71) is provided in the middle of the scraper pressing surface, and a scraper pressing rubber strip (72) is provided in the rubber strip installation groove (71); and / or The guiding device (2) is a linear guide rail group, and the linear guide rail group has two groups. The linear guide rail group includes a linear guide rail and an adapted slide rail seat. The linear guide rail is installed on the scraper replacement base plate (1), and the scraper fixing plate (4) is installed on the linear guide rail through the slide rail seat.

3. The scraper quick-change device according to claim 1, characterized in that: The scraper bin (5) is fixedly mounted on the side of the scraper replacement base plate (1) via a scraper bin fixing plate (500).

4. A scraper quick-change device according to claim 3, characterized in that: The scraper magazine (5) has a accommodating chamber (50), in which a spare scraper (9) is accommodated, and a scraper pressing block (8) is arranged in the accommodating chamber (50), and the scraper pressing block (8) is used to press on the spare scraper (9).

5. A scraper quick-change device according to claim 4, characterized in that: There are two scraper bins (5), which are symmetrically distributed. The scraper bins (5) are an integrally formed part. The scraper bins (5) include a first limiting side plate (51), a second limiting side plate (52), and an end connecting plate (53) connected between the ends of the first limiting side plate (51) and the second limiting side plate (52). The internal space defined by the end connecting plate (53) and the first limiting side plate (51) and the second limiting side plate (52) is the accommodating cavity (50). The spare scraper (9) and the two ends of the scraper pressing block (8) are accommodated in the accommodating cavity (50). The end connecting plate (53) of the scraper magazine (5) is provided with an end connecting protrusion (54) extending outwardly, and the scraper magazine fixing plate (500) is an L-shaped fixing plate, one end of the L-shaped fixing plate is fixedly connected to the end connecting protrusion (54) by means of screws, and the other end of the L-shaped fixing plate is fixedly connected to the side of the scraper replacement base plate (1) by means of screws; The end connecting plate (53) of the scraper magazine (5) is provided with a pressing block guide groove (55) from top to bottom, and the end of the scraper pressing block (8) is provided with a pressing block guide portion (81) extending outward, and the pressing block guide portion (81) passes through the pressing block guide groove (55).

6. The scraper quick-change device according to claim 1, characterized in that: The scraper fixing plate driving device (3) is a scraper fixing plate driving cylinder and there are two scraper fixing plate driving cylinders. The scraper fixing plate driving cylinder is installed on the bottom of the scraper replacement base plate (1) through a first cylinder mounting seat (31). The scraper fixing plate driving cylinder is fixedly connected to the bottom of the cylinder fixing plate (4) through a cylinder connecting block (32). A base plate avoidance groove (11) for passing the cylinder connecting block (32) is opened in the middle of the scraper replacement base plate (1); The scraper plate driving device (6) is a scraper plate driving cylinder and there are two scraper plate driving cylinders. The scraper plate driving cylinder is installed on one side of the scraper bin (5) through a second cylinder mounting seat, and the scraper plate (7) is fixedly installed on the output shaft of the scraper plate driving cylinder.

7. A scraper quick-change device according to any one of claims 1 to 6, characterized in that: The bottom of the scraper bin (5) is provided with a scraper bin bottom recess (56) adapted to the scraper fixing recess (41) of the scraper fixing plate (4); the recess depth of the scraper fixing recess (41) is less than the thickness of the scraper (9); the recess depth of the scraper bin bottom recess (56) is less than the thickness of the scraper (9); the sum of the recess depths of the scraper fixing recess (41) and the recess depths of the scraper bin bottom recess (56) is greater than the thickness of the scraper (9) and less than twice the thickness of the scraper (9).

8. A scraper quick-change device according to claim 7, characterized in that: The depth of the scraper fixing recess (41) is 80% of the thickness of the scraper (9), and the depth of the scraper bin bottom recess (56) is 30% of the thickness of the scraper (9).

9. A coating machine material box, characterized in that: It comprises a material box main body and the scraper quick-change device according to any one of claims 1-8.

10. A coating machine, characterized in that: The material box used in the coating machine is provided with the scraper quick-change device according to any one of claims 1 to 8, or the coating machine includes the coating machine material box according to claim 9.

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