Vacuum liquid suction roller and electroplating equipment

Abstract

The vacuum liquid suction roller comprises a liquid suction pipe, a liquid suction channel is formed in the wall face of the liquid suction pipe, a water suction layer is arranged on the outer side of the liquid suction pipe in a sleeved mode, the liquid suction pipe is communicated with a liquid storage tank through a liquid outlet pipeline, and one side of the upper half portion of the liquid storage tank is communicated with a vacuum pump through an air suction pipeline. The plating solution in the water absorption layer is sucked away through the solution suction pipe, the situation that the plating solution stored in the water absorption layer is saturated and cannot continuously absorb water is prevented, the water absorption layer always keeps good solution absorption capacity, and therefore electroplating can be continuously carried out, the water absorption layer does not need to be frequently replaced, and production quality and production efficiency are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water electroplating, and more specifically to a vacuum liquid suction roller and electroplating equipment. Background Art

[0002] During the copper film electroplating process, the surface of the film will carry a certain amount of plating solution. When the film passes by the conductive roller for electroplating, the film contacts the conductive roller, and the plating solution also contacts the conductive roller, which causes an electroplating reaction between the plating solution and the conductive roller, resulting in a large area of ​​copper deposited on the surface of the conductive roller. These copper deposits will have a relatively large impact on the production of the film. For example, copper particles or copper thorns deposited at a certain point will puncture or scratch the film, affecting the quality of the plated product.

[0003] Patent CN116590761A proposes a device to prevent reverse copper plating on conductive rollers, which includes two groups of liquid suction rollers, and the sponge sleeves of the two groups of liquid suction rollers are respectively pressed against the A side and the B side of the copper foil; the liquid suction mechanism also includes a driving component arranged on the frame, and the driving component is used to drive the two groups of liquid suction rollers to rotate. The electrolyte brought out by the copper foil can be cleaned in time to prevent the copper foil from bringing the electrolyte to the conductive roller, which causes the reverse plating effect of the conductive roller.

[0004] However, the liquid absorption capacity of the sponge cover of the liquid absorption roller is limited. When the electrolyte absorbed by the sponge cover is saturated, the electrolyte on the membrane surface cannot be cleaned any further. Therefore, the sponge cover of the liquid absorption roller needs to be replaced frequently, which is time-consuming and labor-intensive. In addition, when replacing the sponge cover, it is not possible to prevent the electrolyte from being brought to the conductive roller.

[0005] The above shortcomings need to be improved. Summary of the invention

[0006] In order to solve or alleviate the problem that the sponge cover of the existing suction roller has limited suction capacity and needs to be frequently replaced, which is time-consuming and labor-intensive, the utility model provides a vacuum suction roller and electroplating equipment.

[0007] The technical solution of the utility model is as follows:

[0008] A vacuum liquid suction roller comprises a liquid suction tube, a liquid suction channel is opened on the wall surface of the liquid suction tube, a water absorption layer is sheathed on the outer side of the liquid suction tube, the liquid suction tube is connected with a liquid storage tank through a liquid outlet pipe, and one side of the upper half of the liquid storage tank is connected with a vacuum pump through an air suction pipe.

[0009] In the above-mentioned vacuum liquid suction roller, at least one end of the liquid suction tube is provided with a rotating joint, the liquid outlet pipeline is connected with the liquid outlet pipeline through the rotating joint, and the liquid suction tube and the liquid outlet pipeline are rotatably connected through the rotating joint.

[0010] In the above-mentioned vacuum liquid suction roller, the liquid extraction channel is a through hole evenly opened on the wall surface of the liquid extraction tube.

[0011] Furthermore, the through holes are arranged in a plurality of rows along the circumferential direction of the liquid extraction tube, the through holes in each row are evenly distributed along the axial direction of the liquid extraction tube, and the through holes in two adjacent rows are staggered along the axial direction of the liquid extraction tube.

[0012] In the above-mentioned vacuum liquid suction roller, the water absorption layer is detachably connected to the liquid suction tube.

[0013] In the above-mentioned vacuum liquid-absorbing roller, the water-absorbing layer is made of sponge.

[0014] The vacuum liquid suction roller mentioned above has a filter layer arranged in the middle of the liquid storage tank.

[0015] An electroplating device comprises an electroplating tank, a roller, a conductive roller and the above-mentioned vacuum suction roller, wherein the vacuum suction roller is arranged in the front section of the conductive roller, and the film electroplated in the electroplating tank passes around the vacuum suction roller and the conductive roller in sequence.

[0016] Furthermore, a plurality of electroplating tanks are provided, and each of the electroplating tanks is provided with two conductive rollers, and the two conductive rollers are in contact with two sides of the film respectively.

[0017] Furthermore, two vacuum suction rollers are also provided on each of the electroplating tanks. The two vacuum suction rollers are in contact with two sides of the film respectively, and both sides of the film pass around the vacuum suction rollers and the conductive rollers in sequence.

[0018] The utility model according to the above scheme has the following beneficial effects:

[0019] 1. The utility model absorbs the plating solution in the water absorption layer through the liquid extraction pipe to prevent the plating solution stored in the water absorption layer from being saturated and unable to continuously absorb water, so that the water absorption layer always maintains a good liquid absorption capacity, so that the electroplating can work continuously without the need to frequently replace the water absorption layer, thereby ensuring production quality and production efficiency.

[0020] 2. The utility model filters out solid impurities such as sponge crumbs in the plating solution through the filter layer, and the plating solution collected at the bottom of the tank can be recycled, thereby reducing waste of resources, improving resource utilization, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the vacuum liquid suction roller in the utility model;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the electroplating device in the utility model;

[0024] Figure 3 This is a schematic diagram of the front structure of the electroplating device in the utility model;

[0025] Figure 4 It is a schematic diagram of the side structure of the electroplating device in the utility model.

[0026] Among them, the reference numerals in the figure are: 1. vacuum suction roller; 101. suction tube; 102. water absorption layer; 103. suction channel; 104. rotary joint; 2. liquid storage tank; 201. filter layer; 3. vacuum pump; 4. roller; 5. electroplating tank; 6. conductive roller; 7. film. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] It should be noted that when a component is referred to as being "fixed" or "set" or "connected" to another component, it may be located directly or indirectly on the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and should not be construed as limitations on the present technical solution. The terms "first", "second", etc. are only used for the convenience of description and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0029] like Figures 1 to 3 As shown, a vacuum liquid suction roller described in one embodiment of the utility model includes a liquid suction tube 101, a liquid suction channel 103 is opened on the wall surface of the liquid suction tube 101, a water absorption layer 102 is sleeved on the outer side of the liquid suction tube 101, the liquid suction tube 101 is connected with the liquid storage tank 2 through a liquid outlet pipe, and one side of the upper half of the liquid storage tank 2 is connected with the vacuum pump 3 through an exhaust pipe.

[0030] When this embodiment is in use, the film 7 after electroplating is wound around the vacuum liquid absorption roller 1, and the water absorption layer 102 contacts the surface of the film 7, absorbing the residual on the surface of the film 7, and the plating solution is transferred to the water absorption layer 102. This avoids or reduces the reaction between the residual plating solution on the film 7 and the conductive roller 6, prevents the deposition of a large area of ​​copper on the surface of the conductive roller 6, and reduces the puncture or scratching of the film 7 by the copper accumulation on the conductive roller 6, thereby ensuring product quality. At the same time, the vacuum pump 3 evacuates the liquid storage tank 2 so that the liquid storage tank 2 is negatively pressurized, and the liquid extraction pipe 101 connected to the liquid storage tank 2 is also negatively pressurized. The plating solution in the water absorption layer 102 is sucked into the liquid storage pipe from the liquid extraction channel 103 on the wall of the liquid extraction pipe 101, thereby reducing the plating solution content in the water absorption layer 102 and maintaining the liquid absorption effect of the water absorption layer 102. Then the plating solution is sucked into the liquid storage tank 2, and part of the gas is sucked in at the same time. Since the density of the gas is smaller than that of the plating solution, the plating solution falls to the bottom of the liquid storage tank 2, and the gas is retained above the plating solution. Since the exhaust pipe is arranged in the upper half of the liquid storage tank 2, only the gas is sucked into the vacuum pump 3, so that the plating solution on the water absorption layer 102 is continuously transferred to the liquid storage tank 2.

[0031] In this embodiment, the plating solution in the water absorbing layer 102 is sucked away by the liquid extraction tube 101 to prevent the plating solution stored in the water absorbing layer 102 from being saturated and unable to continuously absorb water, so that the water absorbing layer 102 always maintains a good liquid absorption capacity, so that the electroplating can work continuously without the need to frequently replace the water absorbing layer 102, thereby ensuring production quality and production efficiency.

[0032] like Figure 1 As shown, in a preferred embodiment, a rotary joint 104 is provided at least at one end of the liquid extraction tube 101 , and the liquid outlet pipeline is connected to the liquid outlet pipeline through the rotary joint 104 , and the liquid extraction tube 101 and the liquid outlet pipeline are rotatably connected through the rotary joint 104 .

[0033] In this embodiment, the liquid extraction tube 101 is connected to the liquid outlet pipe via a rotary joint 104, so that the liquid outlet pipe and the liquid extraction tube 101 can rotate relative to each other. During operation, the outer surface of the water absorption layer 102 contacts the film 7, and the inner surface of the water absorption layer 102 contacts the outer surface of the liquid extraction tube 101. Under the action of friction, the moving film 7 drives the liquid extraction tube 101 to rotate, and at this time, the liquid storage pipe can remain stationary, which can prevent it from being damaged by twisting on the one hand, and can maintain a stable connection with the liquid extraction tube 101 and the liquid storage tank 2 on the other hand. In addition, the water absorbing layer 102 rotates with the liquid extraction tube 101, so that the side of the water absorbing layer 102 that absorbs water is away from the film 7 to prevent too much plating solution from being stored on one side of the water absorbing layer 102. When the side that absorbs water turns to contact the film 7, the vacuum pump 3 simultaneously absorbs the plating solution from all sides of the water absorbing layer 102. During the rotation process, the side of the water absorbing layer 102 that absorbs liquid is not in contact with the film 7 for a long time after the water absorbing layer 102 absorbs liquid, and no longer absorbs liquid. The plating solution content is reduced and the better liquid absorption energy is restored, so that the liquid absorption can be better carried out to ensure the production quality.

[0034] In actual application, a rotary joint 104 is set at one end of the liquid extraction tube 101 according to the actual equipment installation situation and production requirements, or a rotary joint 104 is set at both ends of the liquid extraction tube 101. The two rotary joints 104 can freely rotate the connection direction to facilitate the connection between the liquid extraction tube 101 and the liquid storage tank 2. One of the rotary joints 104 can be connected to the liquid outlet pipe and the other rotary joint 104 can be provided with a plug, or liquid storage pipes can be provided on both rotary joints 104, which can increase the speed of transferring the plating liquid in the liquid extraction tube 101 to the liquid storage tank 2.

[0035] like Figure 1 As shown, in a preferred embodiment, the liquid extraction channel 103 is a through hole evenly opened on the wall surface of the liquid extraction tube 101. The through holes are arranged in multiple rows along the circumferential direction of the liquid extraction tube 101, and each row of through holes is evenly distributed along the axial direction of the liquid extraction tube 101, and the through holes of two adjacent rows are staggered along the axial direction of the liquid extraction tube 101.

[0036] In this embodiment, by evenly opening through holes on the wall of the liquid extraction tube 101, it can be ensured that the plating solution can enter the interior of the pipe evenly from the entire pipe wall, and it can be avoided that the plating solution only enters the pipe from certain local areas, resulting in uneven liquid flow, so that the water content of the water absorption layer 102 can be evenly reduced, ensuring that each part of the water absorption layer 102 has good liquid absorption capacity. Secondly, multiple rows of through holes are arranged along the circumferential direction, and each row of through holes is evenly distributed along the axial direction, so that the through holes are regularly distributed on the liquid extraction tube 101, which further ensures that the plating solution can be evenly absorbed in the entire circumferential direction on the one hand, and is convenient for production and processing on the other hand. The staggered arrangement between two adjacent rows of through holes makes the through holes more evenly distributed on the liquid extraction tube 101, which is conducive to evenly absorbing the plating solution.

[0037] In practical applications, the shape, diameter, number and distribution of the through holes can be determined according to the strength and rigidity requirements of the material and the flow rate. The shape of the through holes is circular, rectangular or other shapes. Secondly, when opening the through holes, processing methods such as laser cutting, CNC machine tool processing, and electric spark processing can effectively control the size and shape of the through holes. After processing, surface treatment can also be performed, such as spraying or electroplating, to increase the surface hardness and corrosion resistance of the liquid extraction tube 101.

[0038] In a preferred embodiment, the water-absorbing layer 102 is detachably connected to the liquid extraction tube 101, which is convenient for disassembling and assembling the water-absorbing layer 102, thereby facilitating regular replacement or maintenance of the water-absorbing layer 102. Specifically, the water-absorbing layer 102 and the liquid extraction tube 101 can be connected by fasteners such as bolts and screws. The length of the water-absorbing layer 102 is greater than the width of the film 7, and the plating liquid can be absorbed from the entire film 7. When connecting, only the fasteners are set at the two ends of the water-absorbing layer 102, so that the fasteners do not contact the film 7, thereby preventing damage to the film 7 and ensuring the water absorption effect of the water-absorbing layer 102. Alternatively, by setting straps at both ends of the water-absorbing layer 102, tightening the straps, connecting the water-absorbing layer 102 and the liquid extraction tube 101, and loosening the straps, the water-absorbing layer 102 and the liquid extraction tube 101 can be separated. Alternatively, a water-absorbing layer 102 made of elastic material is used. When the water-absorbing layer 102 is in a relaxed state, its inner diameter is smaller than the outer diameter of the liquid extraction tube 101. When installing, the water-absorbing layer 102 is expanded so that it can be sleeved on the liquid extraction tube 101. When disassembling, the water-absorbing layer 102 is directly removed from the liquid extraction tube 101.

[0039] The water-absorbing layer 102 made of elastic material is, for example, a sponge. The sponge material has good water-absorbing properties and can quickly absorb and store the plating solution on the film 7. The sponge has a certain elasticity, so that the connection between the water-absorbing layer 102 and the liquid extraction tube 101 is tighter, and the installation and detachment are convenient. In addition, the tension of the film 7 during movement can be adaptively adjusted. When the film 7 is relatively loose, the sponge stretches elastically to support the film 7. When the film 7 is tight, the sponge is compressed to make the film 7 relatively loose, thereby adjusting the tension of the film 7 and keeping the film 7 in a flat state. The sponge material is light and soft, and can prevent damage to the film 7 when in contact with the film 7.

[0040] like Figure 4 As shown, in a preferred embodiment, a filter layer 201 is provided in the middle of the liquid storage tank 2. The extracted plating solution enters the liquid storage tank 2, and solid impurities such as sponge crumbs in the plating solution are filtered out by the filter layer 201, and the plating solution collected at the bottom of the tank can be recycled.

[0041] In this embodiment, the filtered plating solution at the bottom of the liquid storage tank 2 can be collected for recycling, thereby reducing resource waste, improving resource utilization, and reducing production costs. It also helps to reduce the discharge of waste liquid and reduce the impact on the environment.

[0042] like Figure 4 As shown, an electroplating device in one embodiment of the utility model includes an electroplating tank 5, a roller 4, a conductive roller 6 and the above-mentioned vacuum suction roller 1, the vacuum suction roller 1 is arranged in the front section of the conductive roller 6, and the film 7 after electroplating in the electroplating tank 5 bypasses the vacuum suction roller 1 and the conductive roller 6 in turn.

[0043] There are several electroplating tanks 5, and each electroplating tank 5 is provided with two conductive rollers 6, which are in contact with the two sides of the film 7 respectively. There are also two vacuum liquid suction rollers 1 on each electroplating tank 5, which are in contact with the two sides of the film 7 respectively, and both sides of the film 7 pass around the vacuum liquid suction rollers 1 and the conductive rollers 6 in sequence.

[0044] During electroplating, the film 7 enters the electroplating tank 5 under the traction of the roller 4 and is immersed in the plating solution for electroplating. The film 7 leaving the electroplating tank 5 first contacts the vacuum liquid suction roller 1, and then contacts the conductive roller 6, and then proceeds to the next electroplating tank 5. The electroplating equipment includes multiple electroplating tanks 5, which can be used to plate a coating of appropriate thickness on the film 7, or the plating solutions in the electroplating tanks 5 are different, so that different coatings can be plated on the film surface of the film 7.

[0045] For the composite film 7, since the middle of the composite film 7 is a non-conductive polymer base film, two conductive rollers 6 are provided in each electroplating tank 5, which are in contact with the conductive layers on both sides of the film 7, so that both sides of the film 7 in the electroplating tank 5 are connected to the negative pole of the power supply, and serve as cathodes in the electroplating solution, and the copper ions in the plating solution are deposited on the surface of the film 7. Correspondingly, two vacuum liquid suction rollers 1 are also provided, and the two vacuum liquid suction rollers 1 are in contact with the film surfaces on both sides to absorb liquid, and the vacuum liquid suction rollers 1 are arranged before the corresponding conductive rollers 6 to prevent the plating solution on the film surface from contacting the conductive rollers 6.

[0046] In actual application, multiple vacuum liquid absorption rollers 1 can be provided on each side of the film 7 to ensure the liquid absorption effect and thus ensure the production quality. The specific number is set according to actual production requirements.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum suction roller, characterized in that: It includes a liquid extraction pipe, a liquid extraction channel is opened on the wall of the liquid extraction pipe, a water absorption layer is sheathed on the outer side of the liquid extraction pipe, the liquid extraction pipe is connected with the liquid storage tank through a liquid outlet pipe, and one side of the upper half of the liquid storage tank is connected with a vacuum pump through an air extraction pipe.

2. A vacuum suction roller according to claim 1, characterized in that: At least one end of the liquid extraction pipe is provided with a rotating joint, the liquid outlet pipe is communicated with the liquid outlet pipe through the rotating joint, and the liquid extraction pipe and the liquid outlet pipe are rotatably connected through the rotating joint.

3. A vacuum suction roller according to claim 1 or 2, characterized in that: The liquid extraction channel is a through hole evenly opened on the wall surface of the liquid extraction tube.

4. A vacuum suction roller according to claim 3, characterized in that: The through holes are arranged in a plurality of rows along the circumferential direction of the liquid extraction tube, the through holes in each row are evenly distributed along the axial direction of the liquid extraction tube, and the through holes in two adjacent rows are staggered along the axial direction of the liquid extraction tube.

5. A vacuum suction roller according to claim 1, 2 or 4, characterized in that: The water absorbing layer is detachably connected to the liquid extraction tube.

6. A vacuum suction roller according to claim 1, 2 or 4, characterized in that: The water absorbing layer is made of sponge.

7. A vacuum suction roller according to claim 1, 2 or 4, characterized in that: A filter layer is arranged in the middle of the liquid storage tank.

8. An electroplating device, characterized in that: It comprises an electroplating tank, a roller, a conductive roller and the vacuum suction roller according to any one of claims 1 to 6, wherein the vacuum suction roller is arranged in the front section of the conductive roller, and the film electroplated in the electroplating tank passes around the vacuum suction roller and the conductive roller in sequence.

9. An electroplating device according to claim 8, characterized in that: There are several electroplating tanks, each of which is provided with two conductive rollers, and the two conductive rollers are in contact with two sides of the film respectively.

10. An electroplating device according to claim 9, characterized in that: Two vacuum suction rollers are also arranged on each of the electroplating tanks. The two vacuum suction rollers are in contact with two sides of the film respectively, and both sides of the film pass around the vacuum suction rollers and the conductive rollers in sequence.

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