Coating device

Abstract

The utility model relates to a coating device which comprises an unwinding mechanism and a coating mechanism, the unwinding mechanism comprises an unwinding roller and an appearance detection unit, the unwinding roller is used for unwinding coiled materials, and the appearance detection unit is arranged on the side, where the coiled materials are unwound, of the unwinding roller and used for detecting the surfaces of the coiled materials. The coating mechanism comprises a first coating roller, a second coating roller and a pre-drying device, the first coating roller and the second coating roller are used for coating the surfaces of the two sides of the coiled material respectively, and the pre-drying device is arranged on one side of a conveying path of the coiled material between the first coating roller and the second coating roller. According to the utility model, the appearance detection unit is arranged to detect the surface of the coiled material before coating, so that invalid coating is avoided, and the waste of the coating is effectively reduced; and in addition, the coiled material is heated and pre-dried through the pre-drying device, so that the coating is preliminarily cured, the overall uniformity of a finished product coating is guaranteed, and the coating effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production and processing equipment, and specifically to a coating device. Background Art

[0002] At present, when preparing composite copper foil, it is usually necessary to coat the coil in the front process, that is, to coat the front and back sides of the coil with special coating so that both sides of the coil are coated with coating, thereby changing the surface properties of the coil and facilitating the subsequent copper deposition adhesion work.

[0003] After the coil (usually PP) is coated on both sides, it needs to be cured so that the coating forms a coating on the surface of the coil. At present, when the coil is unrolled, its surface will have different degrees of damage or defects due to its own quality problems or under the pulling force of the roller. If such surface problems are not discovered in time, it is easy to affect the subsequent coating effect, resulting in the quality of the finished product failing to meet the requirements after the subsequent coating process and curing process, and becoming a waste, resulting in the waste of the coated coating, which increases the cost; in addition, in the prior art, an oven is usually set after the coating process, and the coil after both sides are coated is sent to the oven for heating, so that the coating on both sides of the coil is cured together, but there are certain problems with the above method. Since the coating of the coil is sequentially coated on both sides, when one side of the coil is coated, when the other side is coated, since the coating has a certain fluidity, the coating on the side that has been coated will converge in different directions due to the tension and the vibration of the roller, resulting in uneven distribution of the coating, making the thickness of the coating after the final curing uneven, affecting the quality of the finished product. Utility Model Content

[0004] In view of this, the present invention provides a coating device to solve the problems existing in the above-mentioned prior art.

[0005] A coating device comprises a unwinding mechanism and a coating mechanism, the unwinding mechanism comprises an unwinding roller and an appearance detection unit, the unwinding roller is used for unwinding a coil, the appearance detection unit is arranged on the side of the unwinding roller that unwinds the coil, and is used for detecting the surface of the coil, the coating mechanism comprises a first coating roller, a second coating roller and a pre-drying device, the first coating roller and the second coating roller are respectively used for coating the two side surfaces of the coil, and the pre-drying device is arranged on the side of the conveying path of the coil between the first coating roller and the second coating roller.

[0006] In the above technical solution, the unwinding roller is used to unwind the coil, and the appearance inspection unit can detect whether the surface of the unwinding coil is flat and whether there are any damages or defects. The appearance inspection unit can issue an alarm when it finds that the coil has surface quality problems, prompting relevant personnel to conduct inspections, thereby effectively ensuring that the coil is in good condition before coating and avoiding waste of paint; the coil after inspection by the appearance inspection unit is sent to the coating mechanism, and passes through the first coating roller, the pre-drying device and the second coating roller in sequence. The first coating roller coats one side of the coil by rolling, and then when passing through the pre-drying device, the coil is heated by the pre-drying device, and the paint on the surface of the coil is pre-dried, so that the paint is initially solidified into a coating with uniform thickness and a certain stability, so that when the second coating roller is used to roll the other side of the coil, the paint on this side will not be unevenly distributed due to the influence of tension and vibration, thereby ensuring the overall uniformity of the finished coating.

[0007] It should be noted that the coating treated by the pre-drying device is in a semi-cured state and has not been completely cured. After the coil is coated by the second coating roller, it is sent to the oven of the next process for baking to completely cure the coating on both sides of the coil.

[0008] Furthermore, the first coating roller is in contact with a first surface of the coil, the second coating roller is in contact with a second surface of the coil, and the pre-drying device is located on one side of the first surface of the coil.

[0009] In the above technical solution, the pre-drying device is arranged at the rear section of the first coating roller and at the side close to the first surface of the coil, reducing the distance from the first surface of the coil, ensuring the drying effect of the pre-drying device, and enabling the coating to initially form a uniform coating.

[0010] Furthermore, two fixed rollers are provided between the first coating roller and the second coating roller, and the first surface of the coil is directly opposite to the pre-drying device through the two fixed rollers.

[0011] In the above technical solution, the two fixed rollers are respectively located on both sides of one side of the pre-drying device. Through the adjustment of the two fixed rollers, the coil located between the two fixed rollers is directly opposite to the pre-drying device, ensuring that the first side of the coil is parallel to the pre-drying device so that the coil is heated evenly.

[0012] Furthermore, the coating mechanism further comprises a traction assembly, wherein the traction assembly comprises a traction roller and a traction driving member, and the traction driving member is connected to one end of the traction roller.

[0013] In the above technical solution, the traction drive member can drive the traction roller to rotate, and the traction roller is used to provide traction for the coiled material, thereby driving the coiled material to move more smoothly.

[0014] Furthermore, a pressure roller is provided on one side of the traction roller, and the pressure roller is arranged tangentially to the traction roller, and the coil passes through the tangent point between the traction roller and the pressure roller.

[0015] In the above technical solution, the coil passes through the tangent point of the traction roller and the pressure roller. The pressure roller can increase the pressure on the coil on the traction roller, reduce the slippage of the coil, and ensure that the coil does not slide or deviate from the track during transportation.

[0016] Furthermore, the unwinding mechanism includes a static electricity removal component, which is arranged at the rear section of the appearance detection unit. The static electricity removal component includes at least two static electricity removal rollers, which are staggered on both sides of the coil and in contact with the surface of the coil.

[0017] In the above technical solution, the anti-static rollers are staggered on both sides of the coil. By contacting the surface of the coil to conduct charges, the electrostatic charges on the surfaces of both sides of the coil are removed to prevent the coil from absorbing impurities in the air. In addition, static electricity will affect the uniformity of the distribution of glue or paint during the coating process, resulting in uneven coating, spots or missing coating. The anti-static component can effectively reduce the occurrence of such problems.

[0018] Furthermore, the unwinding mechanism comprises an unwinding base and an unwinding bracket, the unwinding bracket is slidably disposed on the unwinding base, and the unwinding roller is mounted on the unwinding bracket.

[0019] In the above technical solution, the unwinding bracket is used to provide a mounting position, and the unwinding bracket is slidably connected to the unwinding base, so that the unwinding position of the coil can be adjusted, which is more practical.

[0020] Furthermore, the coating mechanism includes a coating base and a coating bracket, the coating bracket is slidably disposed on the coating base, and the first coating roller and the second coating roller are both mounted on the unwinding bracket.

[0021] In the above technical solution, the coating bracket is used to provide a mounting position, and the coating bracket is slidably connected to the coating base, thereby facilitating the positioning of the coating bracket.

[0022] Furthermore, both the unwinding base and the coating base are provided with an adjustment component, and the adjustment component includes an adjustment block, an adjustment rod and an adjustment knob, the adjustment block is installed on the unwinding base or the coating base, the adjustment rod is passed through the adjustment block and is threadedly connected to the adjustment block, one end of the adjustment rod is connected to the adjustment knob, and the other end is connected to the unwinding bracket or the coating bracket.

[0023] In the above technical solution, the adjustment block is fixedly installed on the unwinding base or the coating base, and the adjustment knob can be rotated to drive the adjustment rod to rotate. Since the adjustment rod is threadedly connected to the adjustment block, the adjustment rod can move in the axial direction when it rotates, thereby driving the unwinding bracket or the coating bracket to move, thereby realizing the position adjustment of the unwinding bracket or the coating bracket. The structure is simple and the operation is easy.

[0024] Furthermore, the unwinding mechanism comprises a plurality of feed rollers, and the plurality of feed rollers are all mounted on the unwinding bracket; the coating mechanism comprises a plurality of guide rollers, and the plurality of guide rollers are all mounted on the coating bracket.

[0025] In the above technical solution, the feed rollers are installed on the unwinding bracket, the guide rollers are installed on the coating bracket, and the feed rollers and the guide rollers are used to guide the coiled material.

[0026] The utility model has the following beneficial effects:

[0027] When the unwinding roller of the coating device of the present application unwinds the coil, the surface of the coil is inspected by the provided appearance inspection unit, so as to ensure that the coil is in good condition before coating, avoid coating part of the coil with surface quality problems, avoid ineffective processing, and effectively reduce the waste of coating; in addition, the present application provides a pre-drying device between the two coating rollers for coating both sides of the coil, and the coil with one side coated is heated by the pre-drying device, so that the coating is initially solidified into a coating with uniform thickness and certain stability, so that when the other side of the coil is subsequently coated, the coating on the first coated side will not be unevenly distributed due to the influence of tension and vibration, thereby ensuring the overall uniformity of the finished coating and improving the coating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The figure is a three-dimensional diagram of a coating device according to an embodiment.

[0030] Figure 2 It is a schematic diagram of the internal structure when the coil passes through the unwinding mechanism and the coating mechanism.

[0031] Description of reference numerals in the figures:

[0032] 1-unwinding mechanism; 11-unwinding base; 12-unwinding bracket; 13-unwinding roller; 131-unwinding drive; 14-appearance inspection unit; 15-static removal roller; 16-feeding roller; 17-adjusting assembly; 171-adjusting block; 172-adjusting rod; 173-adjusting knob; 2-coating mechanism; 21-coating base; 22-coating bracket; 23-first coating roller; 231-coating drive; 24-second coating roller; 25-traction roller; 251-traction drive; 26-fixed roller; 27-pressure roller; 28-guide roller; 29-pre-drying device. DETAILED DESCRIPTION

[0033] The coating device of the utility model will be further described in detail below in conjunction with specific embodiments and drawings. The drawings are only for illustrative purposes and represent only schematic diagrams, not actual drawings, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0034] Reference Figure 1 and Figure 2In a non-limiting embodiment of the present application, a coating device of the utility model includes a reeling mechanism 1 and a coating mechanism 2, the reeling mechanism 1 includes a reeling roller 13 and an appearance detection unit 14, the reeling roller 13 is used for reeling a coil, the appearance detection unit 14 is arranged on one side of the reeling roller 13, and is used to detect the surface of the coiled material unrolled by the reeling roller 13, the coating mechanism 2 includes a first coating roller 23, a second coating roller 24 and a pre-drying device 29, the first coating roller 23 and the second coating roller 24 are respectively used to coat the surfaces of both sides of the coiled material, and the pre-drying device 29 is arranged on one side of the conveying path of the coiled material between the first coating roller 23 and the second coating roller 24. In this embodiment, specifically, the material roll is stored on the unwinding roller 13, and an unwinding driving member 131 is provided at the end of the unwinding roller 13. The output end of the unwinding driving member 131 is connected to the unwinding roller 13, so that the unwinding roller 13 can be driven to rotate, so as to realize automatic anti-rolling of the material roll. The appearance detection unit 14 can detect whether the surface of the unwinding coil is flat, and whether there is any damage or defect. The appearance detection unit 14 can issue an alarm when it is found that the coil has a surface quality problem, prompting relevant personnel to conduct an inspection, thereby effectively ensuring that the coil is in good condition before coating, and avoiding wasting paint; after the appearance detection unit 14 The coiled material after inspection is sent to the coating mechanism 2, and passes through the first coating roller 23, the pre-drying device 29 and the second coating roller 24 in sequence. The first coating roller 23 coats one side of the coiled material by rolling, and then when passing through the pre-drying device 29, the coiled material is heated by the pre-drying device 29, and the coating on the surface of the coiled material is pre-dried, so that the coating is initially solidified into a coating with uniform thickness and certain stability, so that when the second coating roller 24 is used to roll-coat the other side of the coiled material, the coating on this side will not be unevenly distributed due to the influence of tension and vibration, thereby ensuring the overall uniformity of the finished coating.

[0035] Specifically, a coating driving member 231 is provided at the end of each of the first coating roller 23 and the second coating roller 24 , and the coating driving member 231 drives the first coating roller 23 and the second coating roller 24 to rotate, thereby performing rolling coating on the surface of the coil.

[0036] It should be noted that the coating treated by the pre-drying device 29 is in a semi-cured state and is not completely cured. After the coil is coated by the second coating roller 24, it is sent to the oven of the next process for baking. The baking in the oven allows the coating on both sides of the coil to be completely cured to form a stable coating.

[0037] In some embodiments, the specific material of the coiled material is selected according to production requirements. Specifically, the coiled material in this embodiment is a film made of PP (polypropylene).

[0038] Reference Figure 1 and Figure 2In a non-limiting embodiment of the present invention, according to the direction shown in the figure, the first coating roller 23 is in contact with the first surface of the coil, the second coating roller 24 is in contact with the second surface of the coil, and the pre-drying device 29 is located on the first surface of the coil. In this embodiment, the pre-drying device 29 is arranged at the rear section of the first coating roller 23 and is arranged close to the first surface of the coil, so that the distance between the pre-drying device 29 and the first surface of the coil can be reduced, the drying effect of the pre-drying device 29 is ensured, and the paint can initially form a uniform coating.

[0039] Reference Figure 1 and Figure 2 In a non-limiting embodiment of the utility model, two fixed rollers 26 are provided between the first coating roller 23 and the second coating roller 24. The two fixed rollers 26 are located on one side of the pre-drying device 29 and are arranged up and down. Through the two fixed rollers 26, the first side of the coil is opposite to the pre-drying device 29, and the coil located between the two fixed rollers 26 is opposite to the pre-drying device 29, ensuring that the first side of the coil is parallel to the pre-drying device 29, thereby ensuring that the coil is heated evenly.

[0040] Reference Figure 1 and Figure 2 In a non-limiting embodiment of the utility model, the coating mechanism 2 further includes a traction assembly, which includes a traction roller 25 and a traction drive 251, and the traction drive 251 is connected to one end of the traction roller 25. In this embodiment, the traction roller 25 is installed on the coating bracket 22, and the traction drive 251 can drive the traction roller 25 to rotate. The traction roller 25 is used to provide traction for the coil, thereby driving the coil to move more smoothly.

[0041] In this embodiment, if Figure 1 As shown, a pressure roller 27 is provided on one side of the traction roller 25. The pressure roller 27 is located above the traction roller 25 and is tangent to the traction roller 25. The coil passes through the tangent point between the traction roller 25 and the pressure roller 27. The pressure roller 27 can increase the pressure on the coil on the traction roller 25 and reduce the slippage of the coil. In particular, for coils made of light or poorly sliding materials, increasing the pressure can effectively ensure that they will not slide or deviate from the track during transportation, thereby helping to guide and center the coil correctly.

[0042] Reference Figure 1 and Figure 2In a non-limiting embodiment of the utility model, the unwinding mechanism 1 includes a static electricity removal component, which is arranged at the rear section of the appearance detection unit 14. When the appearance detection unit 14 detects that the appearance of the coil is normal, the static electricity removal component removes the static electricity charge on the surface of the coil to prevent the coil from absorbing dust, fibers and other impurities in the air due to static electricity, thereby affecting the uniformity and quality of subsequent coating. In addition, the static electricity charge on the coil will also affect the uniformity of the distribution of glue or paint during the coating process, resulting in spots or missing coating. The static electricity removal component can effectively reduce the occurrence of such problems, ensuring the smooth progress of the coating process and the quality of the coating.

[0043] In this embodiment, the anti-static component includes two anti-static rollers 15, both of which are installed on the unwinding bracket 12 and are staggered on both sides of the coil and in contact with the surface of the coil. Specifically, the anti-static rollers 15 are made of conductive material and can carry away the static charge on the surfaces of both sides of the coil by conducting the charge through contact, thereby ensuring the coating effect during subsequent coating.

[0044] Reference Figure 1 and Figure 2 In a non-limiting embodiment of the utility model, the unwinding mechanism 1 includes an unwinding base 11 and an unwinding bracket 12, the unwinding bracket 12 is slidably disposed on the unwinding base 11, and the unwinding roller 13 is mounted on the unwinding bracket 12. In this embodiment, the unwinding bracket 12 is used to provide an installation position, and the unwinding bracket 12 is slidably connected to the unwinding base 11, so that the unwinding position of the coil can be adjusted, which is more practical.

[0045] Reference Figure 1 and Figure 2 In a non-limiting embodiment of the utility model, the coating mechanism 2 includes a coating base 21 and a coating bracket 22, the coating bracket 22 is slidably disposed on the coating base 21, and the first coating roller 23 and the second coating roller 24 are both mounted on the unwinding bracket 12. In this embodiment, the coating bracket 22 is used to provide a mounting position, and the coating bracket 22 is slidably connected to the coating base 21, thereby facilitating the position of the coating bracket 22.

[0046] It should be noted that the pre-drying device 29 can be directly installed on the coating bracket 22, and can also be installed on one side of the coating bracket 22 through other structures.

[0047] Reference Figure 1 and Figure 2In a non-limiting embodiment of the utility model, the unwinding base 11 and the coating base 21 are both provided with an adjustment component 17, and the adjustment component 17 includes an adjustment block 171, an adjustment rod 172 and an adjustment knob 173. The adjustment block 171 is installed on the unwinding base 11 or the coating base 21, and the adjustment rod 172 is penetrated by the adjustment block 171 and threadedly connected to the adjustment block 171. One end of the adjustment rod 172 is connected to the adjustment knob 173, and the other end is connected to the unwinding bracket 12 or the coating bracket 22.

[0048] In this embodiment, the adjustment block 171 is fixedly installed on the unwinding base 11 or the coating base 21, and the adjustment knob 173 can be rotated to drive the adjustment rod 172 to rotate. Since the adjustment rod 172 is threadedly connected to the adjustment block 171, the adjustment rod 172 can move in the axial direction when it rotates, thereby driving the unwinding bracket 12 or the coating bracket 22 to move, thereby realizing the position adjustment of the unwinding bracket 12 or the coating bracket 22. The structure is simple and the operation is easy.

[0049] Reference Figure 1 and Figure 2 In a non-limiting embodiment of the utility model, the unwinding mechanism 1 includes a plurality of feed rollers 16, and the plurality of feed rollers 16 are mounted on the unwinding bracket 12, and the coating mechanism 2 includes a plurality of guide rollers 28, and the plurality of guide rollers 28 are mounted on the coating bracket 22. In this embodiment, the feed rollers 16 are mounted on the unwinding bracket 12, and the guide rollers 28 are mounted on the coating bracket 22, and the feed rollers 16 and the guide rollers 28 are used to guide the coil.

[0050] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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 cannot be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A coating device, characterized in that: It includes an unwinding mechanism and a coating mechanism, the unwinding mechanism includes an unwinding roller and an appearance detection unit, the unwinding roller is used for unwinding the coil, the appearance detection unit is arranged on the side of the unwinding roller that unwinds the coil, and is used to detect the surface of the coil, the coating mechanism includes a first coating roller, a second coating roller and a pre-drying device, the first coating roller and the second coating roller are respectively used for coating the two side surfaces of the coil, and the pre-drying device is arranged on the side of the conveying path of the coil between the first coating roller and the second coating roller.

2. The coating device according to claim 1, characterized in that: The first coating roller contacts the first surface of the coil, the second coating roller contacts the second surface of the coil, and the pre-drying device is located on the first surface side of the coil.

3. The coating device according to claim 2, characterized in that: Two fixed rollers are arranged between the first coating roller and the second coating roller, and the first surface of the coil is directly opposite to the pre-drying device through the two fixed rollers.

4. The coating device according to claim 1, characterized in that: The coating mechanism further comprises a traction assembly, wherein the traction assembly comprises a traction roller and a traction driving member, and the traction driving member is connected to one end of the traction roller.

5. The coating device according to claim 4, characterized in that: A pressure roller is provided on one side of the traction roller. The pressure roller is arranged tangentially to the traction roller, and the coil passes through the tangent point between the traction roller and the pressure roller.

6. The coating device according to claim 1, characterized in that: The unwinding mechanism includes a static electricity removal component, which is arranged at the rear section of the appearance detection unit. The static electricity removal component includes at least two static electricity removal rollers, which are staggered on both sides of the coil and in contact with the surface of the coil.

7. The coating device according to claim 1, characterized in that: The unwinding mechanism comprises an unwinding base and an unwinding bracket, the unwinding bracket is slidably arranged on the unwinding base, and the unwinding roller is installed on the unwinding bracket.

8. The coating device according to claim 7, characterized in that: The coating mechanism comprises a coating base and a coating bracket, the coating bracket is slidably arranged on the coating base, and the first coating roller and the second coating roller are both installed on the unwinding bracket.

9. The coating device according to claim 8, characterized in that: The unwinding base and the coating base are both provided with an adjustment component, and the adjustment component includes an adjustment block, an adjustment rod and an adjustment knob. The adjustment block is installed on the unwinding base or the coating base, the adjustment rod is passed through the adjustment block and is threadedly connected to the adjustment block, one end of the adjustment rod is connected to the adjustment knob, and the other end is connected to the unwinding bracket or the coating bracket.

10. The coating device according to claim 8, characterized in that: The unwinding mechanism comprises a plurality of feeding rollers, and the plurality of feeding rollers are all mounted on the unwinding bracket. The coating mechanism comprises a plurality of guide rollers, and the plurality of guide rollers are all mounted on the coating bracket.

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