Experimental coating machine with high-precision coating

Abstract

The utility model provides an experimental coating machine with a high-precision coating, which relates to the field of coating machines and comprises a base, an operating table arranged on the base, a base material plate detachably connected to the operating table and a coating device for coating slurry on the base material plate. The experimental coating machine comprises spiral heating resistance wires used for being electrified for heating, a mounting cavity A is formed in the operation table, at least one spiral heating resistance wire is arranged in the mounting cavity A, and the spiral heating resistance wires make contact with the inner wall of the mounting cavity A so as to conduct heat. Through the device, the uniform thickness of the coating can be ensured, and meanwhile, the heat transfer efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field of coating machines, in particular to an experimental coating machine with high-precision coating. Background Art

[0002] The experimental coating machine is often used in the lithium-ion battery industry. Its main function is to verify the coating effect of the slurry. The most important indicator of the slurry is the pole piece resistivity of the slurry. The slurry is coated on the substrate and then placed in an oven for drying. After drying, the resistance of the slurry is measured by a four-probe tester. Among them, the pole piece resistivity is closely related to the thickness of the slurry coating. Therefore, the accuracy of the coating thickness is an important factor affecting the pole piece resistivity of the slurry.

[0003] The thickness of the coating mainly depends on the distance between the scraper and the substrate. In the existing method, the coated electrode will be sent to the oven for drying. During the transfer process, the fluidity of the liquid will cause the coating to be uneven, so the consistency of the coating thickness after drying is poor. In addition, since the oven indirectly heats the electrode by heating the air, the drying efficiency is low and the drying time is long. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an experimental coating machine with a high-precision coating, so as to solve the technical problems in the prior art that, during the process of transferring the coated electrode to a drying box, the fluidity of the liquid will cause uneven coating thickness, resulting in poor consistency of coating thickness after drying, and the drying efficiency is low and the drying time is long because the oven indirectly heats the electrode by heating the air.

[0005] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0006] An experimental coating machine with high-precision coating, comprising a base, an operating table arranged on the base, a substrate plate detachably connected to the operating table, and a coating device for coating the slurry on the substrate plate; the experimental coating machine comprises a spiral heating resistance wire for heating when powered on, an installation cavity A is arranged inside the operating table, at least one spiral heating resistance wire is arranged in the installation cavity A, and the spiral heating resistance wire contacts the inner wall of the installation cavity A for heat conduction.

[0007] Furthermore, the experimental coating machine also includes a vacuum pump, and the interior of the operating table is provided with a plurality of installation cavities B separated from the installation cavity A, and the upper end surface of the operating table is provided with a plurality of air holes connected with the installation cavity B; the vacuum pump is fixed in the installation cavity B so that after the vacuum pump is started, suction is generated on the substrate plate through the air holes.

[0008] Furthermore, the experimental coating machine also includes a plurality of partitions arranged in the installation cavity A, and the plurality of partitions divide the installation cavity A into a plurality of independent installation spaces, and a spiral heating resistor wire is arranged in each of the installation spaces.

[0009] Furthermore, the experimental coating machine also includes a waste frame detachably mounted on one side of the operating table, which is used to collect the slurry flowing down from the substrate plate during the coating process.

[0010] Furthermore, the coating device comprises:

[0011] The mobile frame comprises a bottom plate and vertical plates arranged on both sides of the bottom plate, the lower end surface of the operating table is provided with a groove, a sliding area is formed between the groove and the upper end surface of the base, and the bottom plate is slidably connected to the sliding area;

[0012] A driving part for driving the bottom plate to slide along the sliding area;

[0013] A connecting plate fixed between the vertical plates, wherein the connecting plate is provided with a first screw hole;

[0014] A scraper and movable ends arranged at both ends of the scraper, wherein the movable ends are slidably connected to the vertical grooves arranged on the vertical plate;

[0015] An adjusting rod is threadedly connected to the first screw hole, and the bottom end of the adjusting rod is rotatably connected to a rotating hole arranged on the top of the scraper.

[0016] Furthermore, the driving part includes a motor arranged on one side of the operating table and a screw with one end fixedly connected to the output shaft of the motor. The side of the operating table is provided with a through hole connected to the sliding area, the screw passes through the through hole, and the screw is threadedly connected to a second screw hole arranged on the bottom plate.

[0017] Furthermore, the experimental coating machine also includes a sealing cover, and an opening and closing door is provided on one side of the sealing cover.

[0018] The beneficial effects of the utility model are as follows: in order to solve the problem of uneven coating thickness during the transfer process to the oven after coating by the traditional experimental coating machine, a spiral heating resistor wire is set on the base of the experimental coating machine. After coating, it is directly heated and dried on the base without transfer, thereby avoiding the flow of slurry during the transfer process and ensuring uniform coating thickness. The coating thickness is closely related to the resistivity of the electrode. Therefore, the utility model invention guarantees the uniformity of the coating to a large extent. In addition, the ordinary drying device is an oven, which heats the air and the air transfers the heat to the electrode; while in the experimental new invention, the heat transfer method between the spiral heating resistor wire and the electrode is contact heat transfer, which has higher heat transfer efficiency than air heat transfer and saves energy at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a partial front view of the utility model;

[0021] Figure 3 It is an axonometric drawing of the operating platform in the utility model.

[0022] Figure 1-Figure 3 In the figure: 1. Base; 2. Operating table; 3. Sliding area; 4. Substrate plate; 5. Waste frame; 6. Moving frame; 7. Connecting plate; 8. Adjusting rod; 9. Scraper; 10. Vertical groove; 11. Motor; 12. Screw; 13. Air hole; 14. Installation cavity B; 15. Spiral heating resistor wire; 16. Vacuum pump; 17. Installation cavity A; 18. Partition. DETAILED DESCRIPTION

[0023] As attached Figure 1 , Figure 3 As shown, the utility model includes: an experimental coating machine with high-precision coating, including a base 1, an operating table 2 arranged on the base 1, a substrate plate 4 detachably connected to the operating table 2, and a coating device for coating the slurry on the substrate plate 4; the experimental coating machine includes a spiral heating resistance wire 15 for heating when powered on, an installation cavity A17 is provided inside the operating table 2, at least one spiral heating resistance wire 15 is provided in the installation cavity A17, and the spiral heating resistance wire 15 contacts the inner wall of the installation cavity A17 for heat conduction.

[0024] In this embodiment, after the slurry is evenly coated on the surface of the substrate plate 4 by the coating device, the spiral heating resistor 15 is energized and starts to heat up, and directly conducts heat to the evenly coated slurry on the substrate plate 4 through the inner wall of the mounting cavity A17. The heat transfer method between the spiral heating resistor 15 and the pole piece is contact heat transfer, which has a higher heat transfer efficiency than air heat transfer and saves energy. Here, the operating table 2 can be made of aluminum with high heat transfer efficiency. Since the heating and drying are directly performed on the base 1, there is no need to transfer, thereby avoiding the slurry from flowing around during the transfer process, ensuring that the coating thickness is uniform. The coating thickness is closely related to the resistivity of the pole piece. Therefore, the utility model invention guarantees the uniformity of the coating to a large extent.

[0025] Here, a detachable connection method between the substrate plate 4 and the operating table 2 is introduced, such as Figure 1 , Figure 3As shown, the experimental coating machine also includes a vacuum pump 16. The interior of the operating table 2 is provided with a plurality of mounting cavities B14 separated from the mounting cavity A17. The upper end surface of the operating table 2 is provided with a plurality of air holes 13 connected with the mounting cavity B14. The vacuum pump 16 is fixed in the mounting cavity B14 so that after the vacuum pump 16 is started, suction is generated on the substrate plate 4 through the air holes 13.

[0026] In this embodiment, after the substrate plate 4 is placed on the upper surface of the operating table 2 , the vacuum pump 16 is started to generate negative pressure in the mounting cavity B14 , thereby firmly fixing the substrate plate 4 on the operating table 2 .

[0027] In addition, in order to further improve the drying efficiency, as an implementation method, Figure 1 , Figure 3 As shown, the experimental coating machine also includes a plurality of partitions 18 arranged in the installation cavity A17, and the plurality of partitions 18 divide the installation cavity A17 into a plurality of independent installation spaces, and each installation space is provided with a spiral heating resistance wire 15. Here, multiple spiral heating resistance wires 15 are used for heating at the same time, which can effectively improve the drying efficiency.

[0028] As an implementation method, Figure 1 As shown, the experimental coating machine also includes a waste frame 5 detachably mounted on one side of the operating table 2. When the coating device coats the slurry on the substrate plate 4, a portion of excess slurry will overflow from the substrate plate 4. The slurry flowing down from the substrate plate 4 during the coating process is collected by the waste frame 5.

[0029] Here, a structure of a coating device is introduced, such as Figure 1 As shown, the coating device includes:

[0030] The movable frame 6 includes a bottom plate and vertical plates arranged on both sides of the bottom plate. The lower end surface of the operating table 2 is provided with a groove, and a sliding area 3 is formed between the groove and the upper end surface of the base 1. The bottom plate is slidably connected to the sliding area 3;

[0031] A driving part for driving the bottom plate to slide along the sliding area 3;

[0032] A connecting plate 7 fixed between the vertical plates, wherein the connecting plate 7 is provided with a first screw hole;

[0033] A scraper 9 and movable ends arranged at both ends of the scraper 9, wherein the movable ends are slidably connected to a vertical groove 10 arranged on the vertical plate;

[0034] The adjusting rod 8 is threadedly connected to the first screw hole, and the bottom end of the adjusting rod 8 is rotatably connected to the rotating hole arranged on the top of the scraper 9.

[0035] In this embodiment, when it is necessary to coat the slurry on the substrate plate 4, first, the distance between the scraper 9 and the substrate plate 4 is adjusted by rotating the adjusting rod 8, so that the distance between the two can make the thickness of the slurry after coating equal to the thickness of the electrode. After completion, the driving unit is started to drive the movable frame 6 to slide in the sliding area 3, so that the scraper 9 can realize the coating operation.

[0036] As an implementation method, Figure 1 , Figure 2 As shown, the driving part includes a motor 11 arranged on one side of the operating table 2 and a screw 12 with one end fixedly connected to the output shaft of the motor 11. The side of the operating table 2 is provided with a through hole connected to the sliding area 3. The screw 12 passes through the through hole, and the screw 12 is threadedly connected to the second screw hole arranged on the bottom plate. Here, the driving of the movable frame 6 is achieved by driving the screw 12 through the motor 11.

[0037] In addition, it is best to have a sealing cover, which can be a glass cover to cover the entire experimental coating machine, isolate it from the outside world, reduce heat loss, and an opening and closing door is provided on one side of the sealing cover.

[0038] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0039] The above is a detailed introduction to an experimental coater with a high-precision coating provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An experimental coating machine with high-precision coating, comprising a base (1), an operating table (2) arranged on the base (1), a substrate plate (4) detachably connected to the operating table (2), and a coating device for coating slurry on the substrate plate (4); characterized in that: The experimental coating machine comprises a spiral heating resistance wire (15) for generating heat when powered on, an installation cavity A (17) is provided inside the operating table (2), at least one spiral heating resistance wire (15) is provided inside the installation cavity A (17), and the spiral heating resistance wire (15) contacts the inner wall of the installation cavity A (17) for heat conduction.

2. An experimental coating machine with high-precision coating according to claim 1, characterized in that: The experimental coating machine further comprises a vacuum pump (16); a plurality of mounting cavities B (14) separated from the mounting cavity A (17) are provided inside the operating table (2); a plurality of air holes (13) connected to the mounting cavities B (14) are provided on the upper end surface of the operating table (2); the vacuum pump (16) is fixed in the mounting cavity B (14) so ​​that after the vacuum pump (16) is started, suction is generated on the substrate plate (4) through the air holes (13).

3. The experimental coating machine with high-precision coating according to claim 1, characterized in that: The experimental coating machine also includes a plurality of partitions (18) arranged in the installation cavity A (17), wherein the plurality of partitions (18) divide the installation cavity A (17) into a plurality of independent installation spaces, and each of the installation spaces is provided with a spiral heating resistance wire (15).

4. An experimental coating machine with high-precision coating according to any one of claims 1 to 3, characterized in that: The experimental coating machine further comprises a waste frame (5) detachably mounted on one side of the operating table (2) and used for collecting slurry flowing down from the substrate plate (4) during the coating process.

5. The experimental coating machine with high-precision coating according to claim 4, characterized in that: The coating device comprises: A movable frame (6) comprises a bottom plate and vertical plates arranged on both sides of the bottom plate, the lower end surface of the operating table (2) is provided with a groove, a sliding area (3) is formed between the groove and the upper end surface of the base (1), and the bottom plate is slidably connected to the sliding area (3); A driving part for driving the bottom plate to slide along the sliding area (3); A connecting plate (7) fixed between the vertical plates, wherein the connecting plate (7) is provided with a first screw hole; A scraper (9) and movable ends arranged at both ends of the scraper (9), wherein the movable ends are slidably connected to the vertical grooves (10) arranged on the vertical plate; An adjusting rod (8) is threadedly connected to the first screw hole, and the bottom end of the adjusting rod (8) is rotatably connected to a rotating hole arranged on the top of the scraper (9).

6. The experimental coating machine with high-precision coating according to claim 5, characterized in that: The driving part comprises a motor (11) arranged on one side of the operating table (2) and a screw (12) having one end fixedly connected to an output shaft of the motor (11); a through hole communicating with the sliding area (3) is provided on the side of the operating table (2); the screw (12) passes through the through hole, and the screw (12) is threadedly connected to a second screw hole provided on the bottom plate.

7. The experimental coating machine with high-precision coating according to claim 1, characterized in that: The experimental coating machine also includes a sealing cover, and a opening and closing door is provided on one side of the sealing cover.

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