Automatic regulation and control device and method for slit type coating die head

Abstract

The invention discloses an automatic regulation and control device and method for a slit type coating die head, the automatic regulation and control device for the slit type coating die head comprises a slit die head upper part, a slit die head lower part, a first connecting piece and an automatic slit regulation and control mechanism, the upper end of the first connecting piece is fixedly connected with the slit die head upper part, and the lower end of the first connecting piece is fixedly connected with the slit die head lower part; the lower end of the first connecting piece is fixedly connected with the lower portion of the slit die head, an automatic slit adjusting control mechanism is fixedly installed over the upper portion of the slit die head, and the automatic slit adjusting control mechanism is used for controlling the distance between the upper portion of the slit die head and the lower portion of the slit die head. The automatic slit adjusting control device is fixedly mounted at the upper part of the slit die head; the working efficiency is improved, and the adjustment is rapid and accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of slit coating equipment, and in particular to an automatic control device and method for a slit coating die head. Background Art

[0002] In the production process of lithium batteries, the substrate needs to go through a coating process. The coating machine evenly coats the coating liquid on the surface of the material to form a layer of protective, decorative or functional coating. The working principle of the slit coating die is that the coating liquid is squeezed and sprayed along the slit of the coating die under a certain pressure and a certain flow rate, and is evenly coated on the surface of the coated object.

[0003] Compared with other coating methods, slit coating has the advantages of fast coating speed and high precision; the coating system is closed to prevent pollutants from entering during the coating process; the coating liquid utilization rate is high and the properties of the coating liquid can be kept stable; multiple layers of coating can be performed simultaneously; it can adapt to different coating liquid viscosities and solid content ranges, and has strong adaptability.

[0004] Currently, the slot coating die head is adjusted using a master bolt / micrometer + slider. The master bolt requires high operating experience of the on-site operator, and the adjustment operations are more and more time-consuming, which affects production efficiency.

[0005] Therefore, a slot coating die head automatic control device and method are provided to solve the above problems. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the slot coating die head is conventionally adjusted by using a master bolt / micrometer+slider, the master bolt requires high operating experience of the on-site operator, and the adjustment operation is more, which takes a long time and affects the production efficiency. Therefore, a slot coating die head automatic control device and method are provided, and the slot coating die head automatic control device comprises: The invention relates to an upper portion of a slit die, a lower portion of a slit die, a first connecting member and an automatic slit adjustment control mechanism, wherein the upper end of the first connecting member is fixedly connected to the upper portion of the slit die, the lower end of the first connecting member is fixedly connected to the lower portion of the slit die, an automatic slit adjustment control mechanism is fixedly installed directly above the upper portion of the slit die, the automatic slit adjustment control mechanism is used to control the distance between the upper portion of the slit die and the lower portion of the slit die, and the automatic slit adjustment control device is fixedly installed on the upper portion of the slit die.

[0007] Furthermore, the first connecting member includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are rotatably connected, the first connecting portion is fixedly mounted on the side surface of the upper portion of the slit die by bolts, and the second connecting portion is fixedly mounted on the side surface of the lower portion of the slit die by bolts.

[0008] Furthermore, the slit automatic adjustment control device includes a mounting bracket, a driving mechanism and a slit width change actuator, the mounting bracket is installed on the upper part of the slit die head by bolts, the driving mechanism is fixedly installed on the upper end of the mounting bracket, and the slit width change actuator is movably installed on the mounting bracket on one side of the driving bracket, and the driving mechanism and the slit width change actuator are connected by a first connecting member.

[0009] Furthermore, the driving mechanism is a driving motor.

[0010] Furthermore, the first connecting member includes a first gear, a second gear and a first bearing, the first gear is fixedly mounted on the driving shaft of the driving motor, the outer side of the first bearing is fixedly connected to the mounting bracket, the inner upper end of the first bearing is fixedly connected to the lower end of the second gear, the outer side of the second gear is meshed with the first gear, and the inner side of the second gear is provided with a thread that is movably connected to the slit width change actuator.

[0011] Furthermore, the slit width changing actuator is a lead screw, the lower end of the lead screw is fixedly connected to the second bearing, and the second bearing is fixedly connected to the upper part of the slit die head.

[0012] On the other hand, the present application also provides a method for automatically controlling a slot-type coating die head, which is used for the automatic control device for a slot-type coating die head as described above, comprising: S1. Obtain coating surface density data, obtain set median, set maximum and set minimum values, and determine whether the coating surface density data is greater than or equal to the set minimum value and less than or equal to the set maximum value at the same time. If so, keep working, if not, enter the second judgment process; S2. Determine whether the coating surface density data is less than the set minimum value. If so, calculate the difference between the coating surface density data and the set minimum value, calculate the lifting height of the slit width change actuator according to the difference, and control the drive motor to lift the slit width change actuator; if not, calculate the difference between the coating surface density data and the set maximum value, calculate the lowering height of the slit width change actuator according to the difference, and control the drive motor to lower the slit width change actuator; S3. Set a preset time, and repeat steps S1 and S2 at each preset interval.

[0013] The implementation of the present invention has the following beneficial effects: 1. The present invention adjusts the width of the slit opening through a motor, which can meet the requirements of accurately and quickly changing the coating density, improve the adjustment rate of the slit die coating opening, improve production efficiency, and have a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present invention; Figure 2 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0016] Please refer to the instruction manual Figure 1 The technical problem to be solved in this embodiment is that the technical problem to be solved by the present invention is that the conventional slot coating die head uses a master bolt / micrometer + slider for adjustment, the master bolt requires high operating experience of the on-site operator, and the adjustment operation is more, and the time required is longer, which affects the production efficiency, so a slot coating die head automatic control device is provided, and the slot coating die head automatic control device includes: A slit die upper part 1, a slit die lower part 2, a first connecting piece 6 and a slit automatic adjustment control mechanism 3, the upper end of the first connecting piece 6 is fixedly connected to the slit die upper part 1, the lower end of the first connecting piece 6 is fixedly connected to the slit die lower part 2, and a slit automatic adjustment control mechanism is fixedly installed directly above the slit die upper part 1, the slit automatic adjustment control mechanism is used to control the distance between the slit die upper part and the slit die lower part, and the slit automatic adjustment control device is fixedly installed on the slit die upper part.

[0017] The first connecting member includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are rotatably connected, the first connecting part is fixedly mounted on the side of the upper part of the slit die by bolts, and the second connecting part is fixedly mounted on the side of the lower part of the slit die by bolts.

[0018] The slit automatic adjustment control device includes a mounting bracket 4, a driving mechanism 5 and a slit width changing actuator 3. The mounting bracket is mounted on the upper part of the slit die head by bolts. The driving mechanism 5 is fixedly mounted on the upper end of the mounting bracket. The slit width changing actuator is movably mounted on the mounting bracket on one side of the driving bracket. The driving mechanism and the slit width changing actuator are connected by a first connecting member.

[0019] The driving mechanism 5 is a driving motor.

[0020] The first connecting member includes a first gear, a second gear and a first bearing. The first gear is fixedly mounted on the driving shaft of the driving motor. The outer side of the first bearing is fixedly connected to the mounting bracket. The upper end of the inner side of the first bearing is fixedly connected to the lower end of the second gear. The outer side of the second gear is meshed with the first gear. The inner side of the second gear is provided with a thread which is movably connected to the slit width changing actuator.

[0021] The slit width changing actuator is a lead screw, the lower end of which is fixedly connected to the second bearing, and the second bearing is fixedly connected to the upper part of the slit die head. Example

[0022] Please refer to the instruction manual Figure 1-2 The technical problem to be solved in this embodiment is that the technical problem to be solved by the present invention is that the slot coating die head is conventionally adjusted by using a master bolt / micrometer+slider, the master bolt requires high operating experience of the on-site operator, and the adjustment operation is more, which takes a long time and affects the production efficiency, so a slot coating die head automatic control device and method are provided, the slot coating die head automatic control device comprises: A slit die upper part 1, a slit die lower part 2, a first connecting piece 6 and a slit automatic adjustment control mechanism 3, the upper end of the first connecting piece 6 is fixedly connected to the slit die upper part 1, the lower end of the first connecting piece 6 is fixedly connected to the slit die lower part 2, and a slit automatic adjustment control mechanism is fixedly installed directly above the slit die upper part 1, the slit automatic adjustment control mechanism is used to control the distance between the slit die upper part and the slit die lower part, and the slit automatic adjustment control device is fixedly installed on the slit die upper part.

[0023] The first connecting member includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are rotatably connected, the first connecting part is fixedly mounted on the side of the upper part of the slit die by bolts, and the second connecting part is fixedly mounted on the side of the lower part of the slit die by bolts.

[0024] The slit automatic adjustment control device includes a mounting bracket 4, a driving mechanism 5 and a slit width changing actuator 3. The mounting bracket is mounted on the upper part of the slit die head by bolts. The driving mechanism 5 is fixedly mounted on the upper end of the mounting bracket. The slit width changing actuator is movably mounted on the mounting bracket on one side of the driving bracket. The driving mechanism and the slit width changing actuator are connected by a first connecting member.

[0025] The driving mechanism 5 is a driving motor.

[0026] The first connecting member includes a first gear, a second gear and a first bearing. The first gear is fixedly mounted on the driving shaft of the driving motor. The outer side of the first bearing is fixedly connected to the mounting bracket. The upper end of the inner side of the first bearing is fixedly connected to the lower end of the second gear. The outer side of the second gear is meshed with the first gear. The inner side of the second gear is provided with a thread which is movably connected to the slit width changing actuator.

[0027] The slit width changing actuator is a lead screw, the lower end of which is fixedly connected to the second bearing, and the second bearing is fixedly connected to the upper part of the slit die head.

[0028] On the other hand, the present application also provides a method for automatically controlling a slot-type coating die head, which is used in the above-mentioned automatic control device for a slot-type coating die head, comprising: S1. Obtain coating surface density data, obtain set median, set maximum and set minimum values, and determine whether the coating surface density data is greater than or equal to the set minimum value and less than or equal to the set maximum value at the same time. If so, keep working, if not, enter the second judgment process; S2. Determine whether the coating surface density data is less than the set minimum value. If so, calculate the difference between the coating surface density data and the set minimum value, calculate the lifting height of the slit width change actuator according to the difference, and control the drive motor to lift the slit width change actuator; if not, calculate the difference between the coating surface density data and the set maximum value, calculate the lowering height of the slit width change actuator according to the difference, and control the drive motor to lower the slit width change actuator; S3. Set a preset time, and repeat steps S1 and S2 at each preset interval.

[0029] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slot coating die head automatic control device, characterized in that: include: The invention relates to an upper portion of a slit die, a lower portion of a slit die, a first connecting member and an automatic slit adjustment control mechanism, wherein the upper end of the first connecting member is fixedly connected to the upper portion of the slit die, the lower end of the first connecting member is fixedly connected to the lower portion of the slit die, an automatic slit adjustment control mechanism is fixedly installed directly above the upper portion of the slit die, the automatic slit adjustment control mechanism is used to control the distance between the upper portion of the slit die and the lower portion of the slit die, and the automatic slit adjustment control device is fixedly installed on the upper portion of the slit die.

2. The automatic control device for the slot coating die head according to claim 1, characterized in that: The first connecting member includes a first connecting part and a second connecting part, the first connecting part and the second connecting part are rotatably connected, the first connecting part is fixedly mounted on the side surface of the upper part of the slit die by bolts, and the second connecting part is fixedly mounted on the side surface of the lower part of the slit die by bolts.

3. The automatic control device for the slot coating die head according to claim 2, characterized in that: The automatic slit adjustment control device includes a mounting bracket, a driving mechanism and a slit width changing actuator, wherein the mounting bracket is mounted on the upper portion of the slit die head by bolts, the driving mechanism is fixedly mounted on the upper end of the mounting bracket, and the slit width changing actuator is movably mounted on the mounting bracket on one side of the driving bracket, and the driving mechanism and the slit width changing actuator are connected by a first connecting member.

4. The automatic control device for the slot coating die head according to claim 3, characterized in that: The driving mechanism is a driving motor.

5. The automatic control device for the slot coating die head according to claim 4, characterized in that: The first connecting member includes a first gear, a second gear and a first bearing. The first gear is fixedly mounted on the driving shaft of the driving motor. The outer side of the first bearing is fixedly connected to the mounting bracket. The upper end of the inner side of the first bearing is fixedly connected to the lower end of the second gear. The outer side of the second gear is meshed with the first gear. The inner side of the second gear is provided with a thread which is movably connected to the slit width changing actuator.

6. The automatic control device for the slot coating die head according to claim 5, characterized in that: The slit width changing actuator is a lead screw, the lower end of the lead screw is fixedly connected to the second bearing, and the second bearing is fixedly connected to the upper part of the slit die head.

7. A method for automatically controlling a slot-type coating die head, used in the automatic control device for a slot-type coating die head as claimed in any one of claims 1 to 6, characterized in that: include: S1. Obtain coating surface density data, obtain set median, set maximum and set minimum values, and determine whether the coating surface density data is greater than or equal to the set minimum value and less than or equal to the set maximum value at the same time. If so, keep working, if not, enter the second judgment process; S2. Determine whether the coating surface density data is less than the set minimum value. If so, calculate the difference between the coating surface density data and the set minimum value, calculate the lifting height of the slit width change actuator according to the difference, and control the drive motor to lift the slit width change actuator; if not, calculate the difference between the coating surface density data and the set maximum value, calculate the lowering height of the slit width change actuator according to the difference, and control the drive motor to lower the slit width change actuator; S3. Set a preset time, and repeat steps S1 and S2 at each preset interval.

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