Roller type film making device capable of automatically adjusting spacing

Abstract

The utility model discloses an automatic spacing adjusting roller type film making device which comprises a main body frame and a coating die head, the main body frame is connected with a moving shaft of a coating machine, and the coating die head is provided with a feeding port used for being connected with a feeding device; a plurality of linear motors used for controlling the coating die head to ascend and descend are installed on the main body frame, stabilizing rods are arranged on the front side and the rear side of the main body frame, and idler wheels are arranged on the stabilizing rods. The device is reasonable in design, simple in structure, capable of effectively improving the film making precision and the film making quality, more convenient to operate, easy to maintain, suitable for making films of different specifications and good in adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to an automatic spacing-adjusting roller-type film-making device. Background Art

[0002] In the production of organic material films and battery positive and negative electrode coating systems, a coating machine is required for coating and film formation. In laboratory scenarios, small cast film coating machines are mostly used for coating and film formation.

[0003] In order to better control the thickness of the coating and maintain the stability of the slurry properties during the coating process, a film former is required. When the existing film former is used, it slides on the base of the coater to form the film. After long-term use, certain scratches will be generated on the base, destroying the flatness and roughness of the base, resulting in scratch marks on the film. In addition, the coating gap adjustment of the existing film former is also relatively inconvenient. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that the movement of the film forming device may scratch the substrate and the coating gap is difficult to adjust, and to propose an automatically adjustable spacing roller film forming device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An automatically adjustable spacing roller film forming device comprises a main frame and a coating die head, wherein the main frame is connected to the motion shaft of the coating machine, and the coating die head is provided with a feed port for connecting to a feeding device;

[0007] The main frame is provided with a plurality of linear motors for controlling the lifting and lowering of the coating die head. The front and rear sides of the main frame are both provided with stabilizing bars, and rollers are provided on the stabilizing bars.

[0008] Preferably, the main frame includes a horizontally arranged crossbeam and side panels vertically arranged on both sides of the crossbeam.

[0009] More preferably, a limiting groove which can be engaged with the moving shaft of the coating machine is provided at the lower end of the side plate.

[0010] More preferably, the linear motor is vertically mounted on the crossbeam, the output end of the linear motor passes through the crossbeam and is connected to the coating die head, and the linear motor is a servo linear motor.

[0011] Preferably, the coating die head consists of two symmetrically arranged split molds, and the two symmetrically arranged split molds are assembled and closed using bolts.

[0012] Preferably, the rollers are arranged on both sides of the stabilizer bar, and the rollers are mounted on the stabilizer bar via precision bearings.

[0013] More preferably, the main frame, stabilizer bar and roller are all made of stainless steel.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, the combination of rollers and precision bearings ensures that the film forming device can move smoothly on the substrate without scratching the substrate, thus avoiding scratch marks during film coating and ensuring coating uniformity and film quality.

[0016] 2. In the present invention, the coating thickness is precisely controlled by a linear motor, and there is no need to use a micrometer for adjustment. The operation is convenient, the accuracy is high, and the film forming accuracy can be effectively guaranteed.

[0017] 3. In the present invention, the coating die head is easy to replace, the die head is easy to disassemble and replace, and the coating width and thickness are easy to adjust. It is easy to use and has good adaptability.

[0018] The present invention has a reasonable design and a simple structure, can effectively improve the film-making precision and film-making quality, is more convenient to operate, and the equipment is easy to maintain. It is suitable for making films of different specifications and has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the appearance structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the front structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the top structure of the present invention.

[0022] Figure 4 It is a left-side structural schematic diagram of the present invention.

[0023] In the figure: main frame 1, cross beam 11, side plate 12, limiting groove 121, coating die head 2, feed port 21, stabilizing rod 3, roller 31, precision bearing 311, linear motor 4. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Reference Figure 1-4A roller-type film former with automatic pitch adjustment comprises a main frame 1 and a coating die 2. The main frame 1 is connected to the coating machine's motion axis. The coating die 2 is provided with a feed port 21 for connecting to a feeding device. The feed port 21 is connected to a slurry injection system via a PTFE hose and a PEEK connector to inject slurry into the coating die 2. The coating die 2 is made of mold steel, with a magnetic fluid polished cavity and a mirrored inner wall. It is suitable for materials with viscosities of 100-20,000 mPa.s, ensuring effective slurry coating.

[0026] The main frame 1 is equipped with multiple linear motors 4 for controlling the elevation of the coating die 2. Stabilizing rods 3 are located on both the front and rear sides of the main frame 1, each equipped with a roller 31. The linear motors 4 precisely control the elevation of the coating die 2, adjusting the gap between the extrusion port of the coating die 2 and the base of the coating machine, facilitating precise adjustment of the coating thickness. The design of the roller 31 ensures stable and smooth movement of the coating die 2, facilitating precise control of the coating speed, and ensuring film quality.

[0027] Based on the above technical solution, when using a coating machine to prepare thin film materials or coat the positive and negative electrodes of batteries, the film maker is connected to the moving shaft of the coating machine through the main frame 1, and the slurry is injected into the coating die through the liquid injection system. At the same time, the film maker is driven to move by the moving shaft for coating. The coating speed is precisely controlled by the stable rotation of the roller 31 to ensure the coating quality. When the coating thickness and other specifications need to be adjusted, the linear motor 4 is used to precisely control the distance between the coating die 2 and the coating substrate. It is easy to use and can ensure the precise adjustment of the gap size.

[0028] In this technical solution, if Figure 1-4 As shown, the main frame 1 includes a horizontally arranged crossbeam 11 and vertically arranged side panels 12 on both sides of the crossbeam 11. The lower ends of the side panels 12 are provided with retaining grooves 121 that can be engaged with the motion shaft of the coater. The retaining grooves 121 facilitate connection with the motion shaft of the coater and also facilitate installation of the film former. When the coating die head 2 needs to be replaced, the film former can be easily removed and replaced, making it easier to use the film former.

[0029] In this technical solution, if Figure 1-4 As shown, the linear motor 4 is vertically mounted on the crossbeam 11. The output end of the linear motor 4 passes through the crossbeam 11 and is connected to the coating die 2. The linear motor 4 is a servo linear motor. The use of a servo linear motor can accurately control the height of the coating die 2, facilitate the adjustment of the coating gap, ensure precise control, and is more convenient than manual adjustment, making it suitable for widespread use.

[0030] In this technical solution, if Figure 1-4As shown, the coating die head 2 is composed of two symmetrically arranged split molds, which are assembled and closed with bolts. The two split molds design facilitates cleaning of the mold cavity and also facilitates maintenance and replacement of the coating die head 2. When coating of different widths is required, different extrusion heads and scrapers can be replaced, which is easy to operate and has good adaptability.

[0031] In this technical solution, if Figure 1-4 As shown, the rollers 31 are arranged on both sides of the stabilizer bar 3 and are mounted on the stabilizer bar 3 via precision bearings 311. The use of precision bearings 311 further ensures the coaxiality of the rollers 31 during rolling, reduces the vibration of the rollers 31 during rolling, improves the stability of the film forming apparatus during movement, ensures the uniformity of film coating, and guarantees the quality of coating.

[0032] In this technical solution, if Figure 1-4 As shown, the main frame 1, the stabilizer bar 3, and the roller 31 are all made of stainless steel, which is easy to clean, can also ensure processing accuracy, and improve the overall accuracy of the film forming machine.

[0033] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A roller film-making device with automatic spacing adjustment, comprising a main frame (1) and a coating die head (2), characterized in that: The main frame (1) is connected to the motion axis of the coating machine, and the coating die head (2) is provided with a feed port (21) for connecting to a feeding device; The main frame (1) is equipped with a plurality of linear motors (4) for controlling the lifting and lowering of the coating die head (2). Stabilizing rods (3) are provided on both the front and rear sides of the main frame (1), and rollers (31) are provided on the stabilizing rods (3).

2. The automatic spacing adjustment roller film forming device according to claim 1, characterized in that: The main frame (1) comprises a horizontally arranged crossbeam (11) and side panels (12) arranged vertically on both sides of the crossbeam (11).

3. The automatic spacing adjustment roller film forming device according to claim 2, characterized in that: The lower end of the side plate (12) is provided with a limiting groove (121) that can be engaged with the motion shaft of the coating machine.

4. The automatic spacing adjustment roller film forming device according to claim 2, characterized in that: The linear motor (4) is vertically mounted on the crossbeam (11), and the output end of the linear motor (4) passes through the crossbeam (11) and is connected to the coating die head (2). The linear motor (4) is a servo linear motor.

5. The automatic spacing adjustment roller film forming device according to claim 1, characterized in that: The coating die head (2) is composed of two symmetrically arranged split dies, and the two symmetrically arranged split dies are assembled and closed using bolts.

6. The automatic spacing adjustment roller film forming device according to claim 1, characterized in that: The rollers (31) are arranged on both sides of the stabilizing rod (3), and the rollers (31) are mounted on the stabilizing rod (3) via precision bearings (311).

7. The automatic spacing adjustment roller film forming device according to any one of claims 1 to 6, characterized in that: The main frame (1), the stabilizing rod (3), and the roller (31) are all made of stainless steel.

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