Scraper mechanism and applicator having scraper mechanism

Abstract

A scraper mechanism and a coater having the scraper mechanism, the scraper mechanism comprising: an angle adjustment assembly having an angle adjustment end to which a scraper is hingedly connected, a fine adjustment assembly having a second linear output end connected to the angle adjustment assembly, and a position setting assembly having a first linear output end connected to the fine adjustment assembly for setting the position when replacing a blade, wherein the angle adjustment end is further provided with a buffer control assembly for providing a buffering support force to the scraper, and when the deflection force received by the scraper is greater than a threshold value of the buffering force provided by the buffer control assembly, the scraper is deflected in accordance with the drive of the deflection force, and at this time, the buffer control assembly can be adjusted to extend or retract so that the threshold value of the buffering force provided by the buffer control assembly does not change.

Description

[Technical Field]

[0001] This application claims priority from a Chinese patent application bearing application number 202310049724.4, filed with the China Patent Office on February 1, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of coating, for example, a scraper mechanism and a coating machine having a scraper mechanism. [Background technology]

[0003] After the current collector is manufactured, it is necessary to proceed to the nanocarbon coating process, that is, to coat the surface of the current collector with a paint and then heat it. The main components of the paint are carbon materials such as conductive graphite, graphene, or carbon nanotubes, adhesives, and solvents. The coated carbon materials improve the conductive performance and enhance the bonding strength between the composite current collector and the positive electrode material or negative electrode material.

[0004] The currently used coating method is coating using a gravure coater. The coating process involves drawing out the slurry in the box body using a rotating gravure roll with small indentations, and then coating the slurry onto the composite current collector that passes over the surface of the gravure roll, thereby achieving coating printing on the substrate surface.

[0005] The scraper mechanism scrapes off the slurry from the light surface area and returns it to the slurry box, preventing the machine from being contaminated by the slurry and improving the utilization rate of the slurry. The scraper also scrapes off the slurry from the engraving area to make the carbon coating layer on the current collector more uniform.

[0006] However, due to the short lifespan of the scraper, it is necessary to replace it with a new one every day on average, and after replacing the scraper, readjustment of the position is required to ensure that the scraper contacts the surface of the gravure roll without the contact force becoming too large. Summary of the Invention

[0007] The present application provides a scraper mechanism, an angle adjustment assembly having an angle adjustment end to which the scraper is hinged; a fine adjustment assembly having a second linear output connected to the angle adjustment assembly; a position setting assembly having a first linear output end connected to the fine adjustment assembly for setting the position when changing the blade; The angle adjustment end is further provided with a buffer control assembly for providing a buffer support force to the scraper. When the deflection force received by the scraper is greater than a threshold value of the buffer force provided by the buffer control assembly, the scraper is deflected according to the drive of the deflection force. At this time, the buffer control assembly provides a scraper mechanism that can be extended and retracted so that the threshold value of the buffer force provided by the buffer control assembly does not change.

[0008] The present application provides a coating machine having a scraper mechanism. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a structural schematic diagram of a scraper mechanism according to an embodiment of the present application. [Figure 2] FIG. 2 is a perspective structural schematic diagram of a scraper mechanism according to an embodiment of the present application. [Figure 3] FIG. 2 is a perspective structural schematic diagram of a scraper mechanism and a gravure roll according to an embodiment of the present application. [Figure 4] FIG. 2 is a perspective structural schematic diagram of a position set assembly in a scraper mechanism according to an embodiment of the present application. [Figure 5] FIG. 2 is a perspective structural schematic diagram of a fine adjustment assembly in a scraper mechanism according to an embodiment of the present application. [Figure 6] FIG. 2 is a perspective structural schematic diagram of an angle adjustment assembly in a scraper mechanism according to an embodiment of the present application. [Figure 7]1 is a structural schematic diagram of an angle adjustment assembly in a scraper mechanism according to an embodiment of the present application; [Figure 8] 1 is a structural schematic diagram of a buffer control assembly in a scraper mechanism according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0010] The scraper mechanism scrapes off the slurry from the light surface area and returns it to the slurry box, thereby preventing the machine from being contaminated by the slurry and improving the utilization rate of the slurry. The scraper also scrapes off the slurry from the engraving area to make the carbon coating layer applied to the current collector more uniform.

[0011] However, due to the short lifespan of the scraper, it is necessary to replace it with a new one every day on average. After replacing the scraper, it is necessary to readjust its position to ensure that the scraper contacts the surface of the gravure roll and the contact force is not too large (which would cause excessive wear on the scraper and the gravure roll and scrape off too much slurry from the engraved area). However, the scraper cannot automatically adjust its position, and the adjustment method is not precise, so the contact force between the scraper and the gravure roll cannot be adjusted precisely.

[0012] In view of the above circumstances, an embodiment of the present application discloses a scraper mechanism and a coater having the scraper mechanism.

[0013] 1 to 8, in the present embodiment, a scraper mechanism is an angle adjustment assembly 3 having one angle adjustment end to which a scraper 4 is hinged; a fine adjustment assembly (2) having a second linear output end connected to the angle adjustment assembly (3); a position setting assembly (1) having a first linear output end connected to the fine adjustment assembly (2) for quick position setting during blade replacement; The angle adjustment end is further provided with a buffer control assembly 309 for providing a buffer support force to the scraper 4. When the deflection force received by the scraper 4 is greater than the threshold of the buffer force provided by the buffer control assembly 309, the scraper 4 is slightly deflected in response to the drive of the deflection force. At this time, the buffer control assembly 309 is a scraper mechanism that can be extended and retracted so that the threshold of the buffer force provided does not change.

[0014] Among them, the position setting assembly 1 can output one linear degree of freedom to the outside, and plays the role of roughly adjusting the position of the scraper, the fine adjustment assembly 2, and the angle adjustment assembly 3 so as to quickly set the position when replacing the blade. The fine adjustment assembly 2 also outputs one linear degree of freedom to the outside in the same direction as the position set assembly 1, but unlike the position set assembly 1, it adjusts position with a short stroke and has the ability to control the position precisely and self-lock in the return stroke. It cooperates with the angle adjustment assembly 3 and the scraper to perform precise position control and prevents the scraper from being displaced by a reverse acting force caused by the vibration of the scraper when it is in operation. The angle adjustment assembly 3 also outputs one linear degree of freedom to the outside, but in a different direction from the position set assembly 1 and the fine adjustment assembly 2, and is arranged at an angle. When the linear degree of freedom is output, the corresponding structural material is used to adjust the scraper rotation angle, making it easier for workers to replace, maintain, or adjust the scraper. At the same time, like the fine adjustment assembly 2, it also has a return stroke self-locking ability.

[0015] In one embodiment, as shown in FIG. 4, the position set assembly 1 includes: The first frame 101 and a cylinder 102 fixed to the first machine frame 101; a first hinge block 103, one end of which is hingedly connected to the output end of the cylinder 102 and the other end of which is hingedly connected to the first machine frame 101; a second hinge block 104, one end of which is hingedly connected to the output end of the cylinder 102, and the other end of which is hingedly connected to a first slider 105, which is a first linear output end of the position set assembly 1; A slide rail 106 is provided which is laid flat on the first machine frame 101 and which is used to slidably connect the first slider 105 while restricting its position.

[0016] The cylinder 102 pushes the second hinge block 104 to eliminate the degree of freedom with the first hinge block 103, thereby ensuring that the slider 105 can be linearly displaced in a relatively precise manner.

[0017] In one embodiment, as shown in FIG. 5, the fine adjustment assembly 2 includes: The second frame 201, a first ball screw 203 rotatably provided on the second machine frame 201 and driven by a first brake-equipped servo motor 202; a first nut connected to the first ball screw 203; a second slider 204 fixed to the first nut as a second linear output end of the fine adjustment assembly 2; and a guide bar 205 fixed to the second machine frame 201 for slidably connecting the second slider 204 while regulating its position.

[0018] When the first brake-equipped servo motor 202 rotates the first ball screw 203, the first nut can move linearly under positional restrictions, and the mechanism formed between the first ball screw and the first nut has the ability to precisely control position and self-lock the return stroke, and cooperates with the angle adjustment assembly 3 and the scraper to perform precise positional control and prevent the scraper from being displaced by a reverse force caused by vibration, etc., when the scraper is in operation. The servo motor with brake configuration can further ensure that the first ball screw 203 does not rotate in reverse due to an external force, which would further lead to a position error of the scraper.

[0019] In one embodiment, as shown in FIG. 6, the angle adjustment assembly 3 includes: a hinge frame 304, which is the angle adjustment end of the angle adjustment assembly 3, having symmetrically arranged hinge plates, an upper shaft body and a lower shaft body provided between the two hinge plates, and the scraper 4 provided between the two hinge plates; The second frame 301, a second brake-equipped servo motor 302, one end of which is hingedly connected to the second machine frame 301 and the other end of which is an output end and connected to a second ball screw 303; a second nut that is power-transmittingly connected to the second ball screw 303 and whose lower portion is hingedly connected to the upper shaft; and a support frame 305, one end of which is fixed to the second machine frame 301 and the other end of which is hingedly connected to the lower shaft body.

[0020] Similarly, when the second brake-equipped servo motor 302 rotates the second ball screw 303, the second nut can move linearly under position restriction, and the mechanism formed between the second ball screw 303 and the second nut has precise position control and self-locking ability in the return stroke. During linear adjustment, the position of the second ball screw 303 is limited by the hinge frame 304, so that the linear drive is converted into angular adjustment, and pitch adjustment for the scraper is realized. During the adjustment process, in addition to the same self-locking capability of the return stroke, synchronous sensing detection is also performed by the pressure sensor.

[0021] In one embodiment, a pressure sensor 306 is further provided on one side of the hinge plate, and in the initial stage, the detection end of the pressure sensor 306 is flush with the end of the scraper, and the pressure sensor can transmit pressure data to a controller, and the controller is electrically connected to the position set assembly 1, the fine adjustment assembly 2 and the angle adjustment assembly 3.

[0022] In summary, the three-degree-of-freedom device works together to achieve rough position adjustment, precise position adjustment, and cutting edge angle adjustment for the scraper, and the above driving modes also perform corresponding automatic stress detection to meet actual usage needs.The self-locking mechanism of the double stroke allows it to work synchronously with the scraper, ensuring that no offset error occurs due to reaction force when the scraper is operating, thereby realizing automatic scraper adjustment and corresponding stress detection.

[0023] In one embodiment, as shown in FIG. 6, a through hole is opened in the center of the scraper 4 for a screw to pass through, and both ends of the screw pass through hinge plates and are fastened by fasteners; A positioning groove is opened at the top of the scraper, a mounting seat 310 is fixed to the hinge plate, and the mounting seat 310 is provided with the buffer control assembly 309. The buffer control assembly 309 is connected to one end of an engaging post 307 via a hinge connecting seat 308, and the other end of the engaging post can be engaged with the positioning groove.

[0024] In one embodiment, as shown in FIG. 7 , the buffer control assembly 309 includes a plurality of plates 319 arranged in a linear array. A plurality of elastic bodies 329 are connected between two adjacent plates 319, and the elastic bodies 329 can provide a first buffering force. A plurality of electromagnets 339 are further inserted into the plates 319, and the electromagnets can provide a second buffering force between the two adjacent plates. The sum of the first buffering force and the second buffering force is a buffering force threshold. When the first buffering force changes, the second buffering force changes accordingly, thereby maintaining the threshold of the buffering force provided by the buffer control assembly 309 unchanged.

[0025] For example, the electromagnets may include a first electromagnet and a second electromagnet, and a repulsive force may be generated between adjacent surfaces of the first electromagnet and the second electromagnet located on two adjacent plates, thereby providing a second buffer force between the two adjacent plates; In actual operation, the buffer control assembly 309 can realize automatic adaptive control, that is, the buffer control assembly 309 can be used to provide a certain degree of fine buffering for the scraper, thereby improving the service life of the scraper; When the deflection force received by the scraper is greater than the threshold of the buffering force provided by the buffer control assembly, the scraper is slightly deflected in response to the drive of the deflection force, and at this time, the buffer control assembly can be adjusted to extend or retract so that the threshold of the buffering force provided does not change.

[0026] It should be understood that if the deflection force received by the scraper is greater than the threshold of the damping force provided by the damping control assembly, the scraper will be slightly deflected in accordance with the drive of the deflection force, and in this case, the damping control assembly will select whether to adjust its extension / retraction so that the threshold of the damping force provided does not change, or to maintain its current state.

[0027] The selection of the buffer control assembly should be set in advance. For example, if the deflection force received by the scraper is always greater than the threshold of the buffer force provided by the buffer control assembly, the scraper will be slightly deflected according to the drive of the deflection force, and at this time, the buffer control assembly will adjust its extension and retraction so that the threshold of the buffer force provided does not change.

[0028] However, how the buffer control assembly is set also depends on whether the material mass on the surface of the gravure roll meets the coating needs after the scraper scrapes the gravure roll.

[0029] Furthermore, a range finder 359 is provided on the uppermost plate, and a range finder block 369 is provided on the lowermost plate, and the range finder can measure the distance between the range finder and the range finder block 369.

[0030] The range finder can detect the amount of deformation of the damping control assembly 309 to provide guidance for adjusting the magnetic force of the electromagnet.

[0031] Example: A coating machine having a scraper mechanism, the coating machine having a scraper mechanism.

[0032] The apparatus further includes a slurry box, a gravure roll located above the slurry box, and a drive element for rotating the gravure roll, the gravure roll having an engraving area located in the center of the roll body and light surface areas located on both sides of the engraving area, and the scraper mechanism is located on the side of the gravure roll.

[0033] The scraper mechanism scrapes off the slurry from the light surface area and returns it to the slurry box, thereby preventing the machine from being contaminated by the slurry and improving the utilization rate of the slurry. The scraper also scrapes off the slurry from the engraving area to make the carbon coating layer applied to the current collector more uniform.

[0034] The scraper mechanism and the applicator having the scraper mechanism according to the embodiment of the present application have the following characteristics.

[0035] In the embodiment of the present application, the scraper mechanism can realize automatic adjustment of the scraper and corresponding stress detection, which can improve the processing accuracy and automation level of the equipment; The three-degree-of-freedom device works together to achieve rough position adjustment, precise position adjustment, and cutting edge angle adjustment for the scraper, and the above driving modes are automatically detected to meet actual usage needs. The self-locking mechanism of the double stroke allows it to work synchronously with the scraper, ensuring that no offset error occurs due to reaction force when the scraper is operating, thereby realizing automatic scraper adjustment and corresponding stress detection. The angle-adjustable end is further provided with a buffer control assembly for providing a buffer support force to the scraper. When the deflection force received by the scraper is greater than a threshold value of the buffer force provided by the buffer control assembly, the scraper is slightly deflected in response to the drive of the deflection force. At this time, the buffer control assembly can be adjusted to extend or retract so that the threshold value of the buffer force provided does not change, thereby further protecting the scraper blade and improving adaptability. [Explanation of symbols]

[0036] 1···Position set assembly, 2···Fine adjustment assembly, 3···Angle adjustment assembly, 4···Scraper, 5···Gravure roll, 101···First machine frame, 102···Cylinder, 103···First hinge block, 104···Second hinge block, 105···First slider, 106···Slide rail, 201···Second machine frame, 202···First servo motor with brake, 203···First ball screw, 204···Second slider , 205···guide bar, 301···second machine frame, 302···second brake-equipped servo motor, 303···second ball screw, 304···hinge frame, 305···support frame, 306···pressure sensor, 307···engaging pillar, 308···hinge connection seat, 309···buffer control assembly, 310···mounting seat, 319···plate body, 329···elastic body, 339···electromagnet, 349···filler, 359···distance measuring device, 369···distance measuring block.

Claims

1. A scraper mechanism comprising: an angle adjustment assembly (3) having an angle adjustment end to which a scraper (4) is hinged; a fine adjustment assembly (2) having a second linear output end connected to the angle adjustment assembly (3); a position setting assembly (1) having a first linear output end connected to the fine adjustment assembly (2) for setting the position when replacing the blade; The angle adjustment end is further provided with a buffer control assembly (309) for providing a buffer support force to the scraper (4). When the deflection force received by the scraper (4) is greater than the threshold value of the buffer force provided by the buffer control assembly (309), the scraper (4) is deflected according to the drive of the deflection force. At this time, the buffer control assembly (309) can be adjusted to extend or retract so that the threshold value of the buffer force provided by the buffer control assembly (309) does not change. Scraper mechanism.

2. The position set assembly (1) comprises: The first frame (101), a cylinder (102) fixed to the first machine frame (101); a first hinge block (103) whose first end is hingedly connected to the output end of the cylinder (102) and whose second end is hingedly connected to the first machine frame (101); a second hinge block (104) having a first end hinged to the output end of the cylinder (102) and a second end hinged to a first slider (105) that is a first linear output end of the position set assembly (1); a slide rail (106) that is laid flat on the first machine frame (101) and configured to slidably connect to the first slider (105) while restricting its position; 2. The scraper mechanism of claim 1.

3. The fine adjustment assembly (2) comprises: The second frame (201), a first ball screw (203) rotatably provided on the second machine frame (201) and driven by a first brake-equipped servo motor (202); a first nut connected to the first ball screw (203); a second slider (204) fixed to the first nut as a second linear output end of the fine adjustment assembly (2); a guide bar (205) fixed to the second machine frame (201) and configured to slidably connect to the second slider (204) while regulating its position; 2. The scraper mechanism of claim 1.

4. The angle adjustment assembly (3) a hinge frame (304) which is the angle adjustment end of the angle adjustment assembly (3), and which has two symmetrically arranged hinge plates, an upper shaft and a lower shaft are provided between the two hinge plates, and the scraper (4) is provided between the two hinge plates; A second frame (301), a second brake-equipped servo motor (302) whose first end is hingedly connected to the second machine frame (301) and whose second end is an output end and connected to a second ball screw (303); a second nut that is connected to the second ball screw (303) and whose lower portion is hingedly connected to the upper shaft; a support frame (305) whose first end is fixed to the second machine frame (301) and whose second end is hingedly connected to the lower shaft; 2. The scraper mechanism of claim 1.

5. A pressure sensor (306) is provided on one side of the hinge plate, and in an initial stage, the detection end of the pressure sensor (306) is flush with the end of the scraper (4), and the pressure sensor (306) can transmit pressure data to a controller, and the controller is electrically connected to the position set assembly (1), the fine adjustment assembly (2), and the angle adjustment assembly (3).

5. The scraper mechanism of claim 4.

6. The scraper (4) has a through hole in the middle for a screw to pass through, and both ends of the screw pass through hinge plates and are fastened by fasteners; A positioning groove is opened at the top of the scraper (4), a mounting seat (310) is fixed to the hinge plate, and the mounting seat (310) is provided with the shock-absorbing control assembly (309), and the shock-absorbing control assembly (309) is connected to a first end of an engaging post (307) by means of a hinge connecting seat (308), and the second end of the engaging post (307) can be fitted into the positioning groove.

6. A scraper mechanism according to claim 4 or 5.

7. The buffer control assembly (309) includes a plurality of plates (319) distributed in a linear array, a plurality of elastic bodies (329) connected between two adjacent plates (319), the elastic bodies (329) capable of providing a first buffering force, a plurality of electromagnets (339) further embedded in each plate (319), the electromagnets (339) capable of providing a second buffering force between the two adjacent plates, the sum of the first buffering force and the second buffering force being a buffering force threshold, and when the first buffering force changes, the second buffering force changes accordingly, thereby maintaining the threshold of the buffering force provided by the buffer control assembly (309) unchanged.

7. A scraper mechanism according to claim 1 or 6.

8. The uppermost plate (319) is provided with a range finder (359), and the lowermost plate (319) is provided with a range finder block (369), and the range finder (359) can measure the distance between the range finder (359) and the range finder block (369).

8. The scraper mechanism of claim 7.

9. A coating machine having a scraper mechanism, the coating machine having the scraper mechanism according to any one of claims 1 to 8. A coating machine with a scraper mechanism.

10. The apparatus further includes a slurry box, a gravure roll (5) located above the slurry box, and a drive element for driving the gravure roll (5) to rotate, the gravure roll (5) having an engraving area located in the center of the roll body and light surface areas located on both sides of the engraving area, and the scraper mechanism is located on the side of the gravure roll (5). A coating machine having the scraper mechanism according to claim 9.

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