Protective device for electrolytic copper foil production

Abstract

The utility model relates to the technical field of electrolytic copper foil, in particular to a protective device for electrolytic copper foil production, which comprises a protective cover, the protective cover is arranged on the upper portion of an electrolytic bath and used for protecting a cathode roller after the electrolytic copper foil is stripped, and the protective cover comprises a side end protective baffle and an upper end protective baffle which are connected. An acid liquid spraying pipe is arranged in the protective cover, the acid liquid spraying pipe is communicated with an acid electrolyte feeding pipe, the acid liquid spraying pipe is horizontally or obliquely arranged, at least one spraying hole is formed in the pipe wall of the acid liquid spraying pipe, and the spraying hole is formed in the upward pipe wall of the acid liquid spraying pipe. The cathode roller can prevent dust and other foreign objects from being in contact with the roller surface of the cathode roller, can control acid mist drifting to a certain degree, can shorten the contact time of the roller surface of the cathode roller and air, delays oxidation of the roller surface of the cathode roller, and reduces the appearance quality problem of copper foil caused by oxidation of the roller surface of the cathode roller.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic copper foil technical field, especially in production of electrolytic copper foil protection device. BACKGROUND

[0002] Electrolytic copper foil is through electrochemistry's method, make the copper ion in electrolyte under the action of outside direct current, deposit on the cathode roll surface reduction into the electronic functional material with certain performance.

[0003] The quality of the roll surface of the cathode roll is crucial to the quality of the copper foil, and after the copper foil on the surface of the cathode roll is stripped, a large area of the cathode roll is exposed to the air. Without a protective device, the exposed part of the cathode roll is prone to falling dust on its surface or even being collided by foreign objects. Moreover, the exposed cathode roll is easily oxidized by air, and thus the copper foil produced in this way contains many appearance defects such as pinholes, penetration points, scratches and oxidation marks.

[0004] At the same time, a large amount of acid mist containing sulfuric acid and copper sulfate is formed during the production of the green foil, and if it is not absorbed and treated in time and effectively, the acid mist will be dispersed into the air of the production workshop, which will have adverse effects on the copper foil products, production equipment, personnel health and the surrounding environment. Most copper foil production plants use air induction systems to extract the acid mist, but the acid mist contains copper sulfate components, and the acid mist will form copper sulfate crystals in the air extraction pipeline. After a long time of operation, the crystals in the air extraction pipeline will become thicker and thicker, until the pipeline is blocked, which seriously affects the effect of acid mist extraction.

[0005] A protective cover device for preventing cathode roller pollution of an electrolytic copper foil production machine was disclosed in Chinese Patent No. CN219490189U. A protective cover is installed on the top of the cathode roller of the electrolytic cell. By filling electrolyte into the inside of the spray pipe, the electrolyte is sprayed out through the spray holes on the spray pipe, thereby spraying the surface of the cathode roller that has not entered the inside of the electrolytic cell. However, the spray holes are arranged below the spray pipe, and the electrolyte will spread around the spray holes and between adjacent holes. After drying, crystals are formed. The crystals continue to form and accumulate into large blocks. When a certain weight is reached, they will fall off under the action of gravity, falling onto the surface of the cathode roller or even sliding into the electrolytic cell, causing damage to the surface of the cathode roller and seriously affecting the quality of the copper foil product. At the same time, the gas extraction mechanism, such as the through slot, gas extraction cover, and gas extraction pipe, is arranged above the cathode roller. Acid mist will condense on the inner surface of the gas extraction mechanism to form crystals. When the crystals accumulate to a certain amount, they will fall off due to gravity, falling onto the surface of the cathode roller or even sliding into the electrolytic cell, causing damage to the cathode roller and seriously affecting the quality of the copper foil product.

[0006] Therefore, there is a need to develop a cathode roller protective cover device for electrolytic copper foil production to solve the above problems. Invention content

[0007] In order to solve the above technical problems existing in the prior art, the utility model provides a protective device for electrolytic copper foil production.

[0008] The technical scheme for solving the above technical problems of the utility model is as follows:

[0009] The utility model provides a protective device for electrolytic copper foil production, including the protective cover, the protective cover is located in the upper portion of electrolytic cell, be used for the protection of cathode roller after the stripping of electrolytic copper foil, the protective cover includes the side end protection baffle and upper end protection baffle of being connected, be equipped with acid liquid spray pipe in the protective cover, acid liquid spray pipe with acid electrolyte liquid pipe intercommunication, acid liquid spray pipe is horizontally or inclined to set up, be equipped with at least one spray hole on the pipe wall of acid liquid spray pipe, the spray hole is located on the pipe wall of acid liquid spray pipe and sets up upwards.

[0010] Adopt the protective device for electrolytic copper foil production provided by the utility model, the cathode roller is continuously rotating, and the electrolytic copper foil on it is stripped by the stripping roller, then continues to rotate and enters the inside of the protective cover. The protective cover protects the cathode roller exposed after the stripping of the electrolytic copper foil, effectively preventing dust and other foreign matters from contacting the surface of the cathode roller, and controlling the dispersion of acid mist to a certain extent. The acid liquid spray pipe is connected with the acid electrolyte liquid pipe outside, and the surface of the cathode roller is sprayed through the spray hole, which can effectively reduce the contact time of the surface of the cathode roller with air, delay the oxidation of the surface of the cathode roller, and reduce the appearance quality problems of the copper foil caused by the oxidation of the surface of the cathode roller.

[0011] On the basis of the above technical solutions, the utility model further can make following technical improvement:

[0012] Further, the side end protection baffle includes a first side end protection baffle and a second side end protection baffle, the upper end protection baffle includes a front protection baffle and a top protection baffle connected, and the front protection baffle is provided with a protection cover inlet below for the turning-in of the cathode roller.

[0013] Further, one end of the acid liquid spraying pipe is arranged on the first side end protection baffle, and the other end is arranged on the second side end protection baffle.

[0014] Further, the first side end protection baffle and the second side end protection baffle are both fan-shaped structures, and the top protection baffle is an arc-shaped structure.

[0015] The beneficial effects of the above further technical solutions are that the inner cavity shape of the protection cover is matched with the outer shape of the cathode roller to reduce the volume and material usage of the protection cover.

[0016] Further, the top protection baffle is provided with a spraying observation window.

[0017] The beneficial effects of the above further technical solutions are that the spraying effect of the acid liquid spraying pipe on the surface of the cathode roller can be checked at any time, and uneven spraying and other abnormal situations caused by the blockage of individual spraying holes can be prevented.

[0018] Further, when the number of the spraying holes is not one, the spraying holes are evenly and / or spacedly distributed on the pipe wall of the acid liquid spraying pipe.

[0019] The beneficial effects of the above further technical solutions are that the spraying uniformity of the acid electrolyte is improved, the contact time of the surface of the cathode roller with air is reduced, the oxidation of the surface of the cathode roller is delayed, and the appearance quality problem of the copper foil caused by the oxidation of the surface of the cathode roller is reduced.

[0020] Further, the protection cover is provided with a hoisting mechanism.

[0021] The beneficial effects of the above further technical solutions are that the hoisting of the protection device is facilitated.

[0022] Further, the side end protection baffle is provided with an acid mist absorption pipe, the acid mist absorption pipe includes a first end and a second end, the first end communicates with the inside of the protection cover, and the second end communicates with an air induction device.

[0023] The beneficial effects of the above further technical solutions are that the acid mist absorption pipe can timely extract the acid mist, effectively reducing the influence of the acid mist flying around on products, equipment, personnel and the environment.

[0024] Further, the acid mist absorption pipe is provided with a water mist spraying pipe and a drain pipe, and the water mist spraying pipe and the drain pipe are communicated with the acid mist absorption pipe.

[0025] The beneficial effects of the above further technical scheme are that: after the acid mist enters the acid mist absorption pipe, the water mist sprayed by the water mist spraying pipe is contacted and absorbed, the water mist is gathered to form water droplets or water flow, and the water droplets or water flow are discharged along the drain pipe, which can effectively reduce crystallization and prevent pipe crystallization blockage

[0026] Further, the acid mist absorption pipe is provided with a plurality of acid mist absorption pipes, and the plurality of acid mist absorption pipes are symmetrically or spacedly arranged on the side end protection baffle.

[0027] Compared with the prior art, the utility model has the following technical effects:

[0028] The protective device for electrolytic copper foil production can simultaneously protect the surface and end portion of the cathode roller, improve the protection effect, and solve the problems that the exposed cathode roller after the copper foil is peeled off is easy to have dust fall in, be collided by foreign matters and be oxidized by long-time contact with air;

[0029] The cathode roller continuously rotates, the electrolytic copper foil on the cathode roller is peeled off by the peeling roller, and then continuously rotates and enters the inside of the protective cover, the protective cover protects the exposed cathode roller after the electrolytic copper foil is peeled off, effectively prevents the contact between dust and other foreign matters and the roller surface of the cathode roller, and can control the acid mist diffusion to a certain extent; the outside of the acid liquid spraying pipe is connected with the acid electrolyte liquid inlet pipe, the roller surface of the cathode roller is sprayed through the spraying holes, the contact time of the roller surface of the cathode roller and air can be effectively reduced, the oxidation of the roller surface of the cathode roller is delayed, and the appearance quality problem of the copper foil caused by the oxidation of the roller surface of the cathode roller is reduced;

[0030] The air draft equipment is connected with the outside of the acid mist absorption pipe, the acid mist can be extracted in time, and the influence of the acid mist diffusion on products, equipment, personnel and the environment is effectively reduced;

[0031] After the acid mist enters the acid mist absorption pipe, the water mist sprayed by the water mist spraying pipe is contacted and absorbed, the water mist is gathered to form water droplets or water flow, and the water droplets or water flow are discharged along the drain pipe, which can effectively reduce crystallization and prevent pipe crystallization blockage;

[0032] The water mist is used to absorb the acid mist, plays a role in diluting the acid mist and reducing the concentration of copper sulfate, makes the copper sulfate crystallization not easy to separate out, the water mist is gathered on the inner wall of the pipe to keep the inner wall in a wet state, and the copper sulfate crystallization is difficult to form, furthermore, the water mist is gathered and condensed on the inner wall of the pipe to form water flow, flows down along the inner wall of the pipe, and takes away the unseparated copper sulfate in time to prevent the copper sulfate from separating out to form crystallization, the water or water flow condensed on the inner wall of the pipe can dissolve the separated crystallization, the dissolved copper sulfate is taken away by the water flow, the cleaning of the inner wall of the pipe is realized, and the problems of acid mist diffusion and crystallization blockage of the pipe are solved.

[0033] The acid mist absorption pipe is arranged on the side end protection baffle (i.e. the side of the protection cover), and is located at both ends of the cathode roller, and the water mist in the acid mist absorption pipe can absorb the acid mist and clean the pipe wall, thereby avoiding the formation and gathering of copper sulfate crystals, and avoiding the crystals from falling to the surface of the cathode roller or even sliding into the electrolytic tank under the action of gravity, thereby avoiding the damage to the cathode roller and the serious influence on the quality of the copper foil product;

[0034] The spraying hole is arranged above the acid liquid spraying pipe, electrolyte is sprayed upward and then flows back to the outer wall of the acid liquid spraying pipe under the action of gravity, electrolyte continuously flows on the surface of the acid liquid spraying pipe, and the acid liquid spraying pipe is washed by the electrolyte, so that the crystals are not precipitated, and the phenomenon of crystal falling is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A structure schematic view of the protection device for electrolytic copper foil production in the embodiment 1 of the utility model is shown;

[0036] Figure 2 A structure schematic view of the protection device for electrolytic copper foil production in the embodiment 1 of the utility model from another angle is shown;

[0037] Figure 3 A structure schematic view of the acid liquid spraying pipe in the embodiment 1 of the utility model is shown;

[0038] Figure 4 An application schematic view of the protection device for electrolytic copper foil production in the embodiment 1 of the utility model is shown;

[0039] Figure 5 A structure schematic view of the protection device for electrolytic copper foil production in the embodiment 2 of the utility model is shown;

[0040] Figure 6 A structure schematic view of the protection device for electrolytic copper foil production in the embodiment 2 of the utility model from another angle is shown;

[0041] Figure 7 An application schematic view of the protection device for electrolytic copper foil production in the embodiment 2 of the utility model is shown;

[0042] Reference signs:

[0043] 1, front protection baffle; 2, top protection baffle; 3, first side end protection baffle; 4, acid mist absorption pipe; 5, water mist spraying pipe; 6, drain pipe; 7, acid liquid spraying pipe; 8, spraying observation window; 9, hoisting plate; 10, hoisting hole; 11, spraying hole; 12, cathode roller; 13, electrolytic tank; 14, stripping roller; 15, electrolytic copper foil; 16, second side end protection baffle. DETAILED DESCRIPTION

[0044] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure. Although the description of the present application will be introduced together with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0045] Embodiment 1

[0046] Referring to Figures 1-4 , the protective device for electrolytic copper foil production includes a protective cover, which is arranged at the upper part of the electrolytic cell 13 and is used for protecting the cathode roller 12 after the stripping of the electrolytic copper foil 15. The protective cover includes a side end protective baffle and an upper end protective baffle connected with each other. The side end protective baffle includes a first side end protective baffle 3 and a second side end protective baffle 16. The upper end protective baffle includes a front protective baffle 1 and a top protective baffle 2 connected with each other. The front protective baffle 1 is provided below with a protective cover inlet for the turning-in of the cathode roller 12. An acid liquid spraying pipe 7 is arranged in the protective cover. The acid liquid spraying pipe 7 is horizontally arranged. One end of the acid liquid spraying pipe 7 is arranged on the first side end protective baffle 3, and the other end is arranged on the second side end protective baffle 16. The acid liquid spraying pipe 7 is in communication with the acidic electrolyte liquid pipe. A plurality of spraying holes 11 are arranged on the pipe wall of the acid liquid spraying pipe 7. The spraying holes 11 are uniformly and spacedly arranged on the pipe wall of the acid liquid spraying pipe 7. Each spraying hole 11 is arranged on the upwardly arranged pipe wall of the acid liquid spraying pipe 7. The first side end protective baffle 3 and the second side end protective baffle 16 are both in a fan-shaped structure. The top protective baffle 2 is in an arc-shaped structure. A spraying observation window 8 is arranged on the top protective baffle 2. A hoisting mechanism is arranged on the protective cover. The hoisting mechanism includes a hoisting plate 9 and a hoisting hole 10. Specifically, the hoisting plate 9 is arranged on the first side end protective baffle 3 and the second side end protective baffle 16. The hoisting hole 10 is arranged on the hoisting plate 9, which facilitates the passing of the hoisting belt and the hoisting of the protective device.

[0047] The protective cover is arranged on the exposed cathode roller 12 between the stripping position of the electrolytic copper foil 15 and the electrolyte in which the cathode roller 12 is initially immersed in the electrolytic tank 13, the cathode roller 12 is installed in the electrolytic tank 13, the bottom of the cathode roller 12 is immersed in the electrolyte, after being electrified, the copper ions in the electrolyte are deposited on the surface of the cathode roller 12 to form the electrolytic copper foil 15, the cathode roller 12 is continuously rotated in the direction of the dotted arrow as shown in the figure, so that the cathode roller 12 is rotated in the clockwise direction as shown in the dotted arrow in the figure, so that different positions of the cathode roller 12 are immersed in the electrolyte for electrochemical deposition, so that a layer of electrolytic copper foil 15 is deposited on the circumferential surface of the cathode roller 12. The electrolytic copper foil 15 covers the surface of the cathode roller 12 and rotates with the cathode roller 12, and when the cathode roller 12 rotates to the stripping roller 14, the electrolytic copper foil 15 is stripped. After the electrolytic copper foil 15 is stripped, the surface of the cathode roller 12 is exposed, and then the cathode roller 12 is rotated into the protective cover, and the cathode roller 12 is protected under the joint action of the front protective baffle 1, the top protective baffle 2, the first side end protective baffle 3 and the second side end protective baffle 16 and the acid liquid spraying pipe 7. Figure 4 The cathode roller 12 is continuously rotated in the direction of the dotted arrow as shown in the figure, so that the cathode roller 12 is rotated in the clockwise direction as shown in the dotted arrow in the figure, so that different positions of the cathode roller 12 are immersed in the electrolyte for electrochemical deposition, so that a layer of electrolytic copper foil 15 is deposited on the circumferential surface of the cathode roller 12. The electrolytic copper foil 15 covers the surface of the cathode roller 12 and rotates with the cathode roller 12, and when the cathode roller 12 rotates to the stripping roller 14, the electrolytic copper foil 15 is stripped. After the electrolytic copper foil 15 is stripped, the surface of the cathode roller 12 is exposed, and then the cathode roller 12 is rotated into the protective cover, and the cathode roller 12 is protected under the joint action of the front protective baffle 1, the top protective baffle 2, the first side end protective baffle 3 and the second side end protective baffle 16 and the acid liquid spraying pipe 7. Figure 4 The cathode roller 12 is continuously rotated in the direction of the dotted arrow as shown in the figure, so that the cathode roller 12 is rotated in the clockwise direction as shown in the dotted arrow in the figure, so that different positions of the cathode roller 12 are immersed in the electrolyte for electrochemical deposition, so that a layer of electrolytic copper foil 15 is deposited on the circumferential surface of the cathode roller 12. The electrolytic copper foil 15 covers the surface of the cathode roller 12 and rotates with the cathode roller 12, and when the cathode roller 12 rotates to the stripping roller 14, the electrolytic copper foil 15 is stripped. After the electrolytic copper foil 15 is stripped, the surface of the cathode roller 12 is exposed, and then the cathode roller 12 is rotated into the protective cover, and the cathode roller 12 is protected under the joint action of the front protective baffle 1, the top protective baffle 2, the first side end protective baffle 3 and the second side end protective baffle 16 and the acid liquid spraying pipe 7.

[0048] Embodiment 2

[0049] Referring to Figures 5-7 , the protective device for producing electrolytic copper foil comprises a protective cover arranged at the upper portion of the electrolytic tank 13 and used for protecting the cathode roller 12 after the electrolytic copper foil 15 is stripped, the protective cover comprises side end protective baffles and upper end protective baffles connected with each other, the side end protective baffles comprise a first side end protective baffle 3 and a second side end protective baffle 16, the upper end protective baffles comprise a front protective baffle 1 and a top protective baffle 2 connected with each other, the front protective baffle 1 is provided below with a protective cover inlet used for rotating the cathode roller 12 into the protective cover, the first side end protective baffle 3 and the second side end protective baffle 16 are both provided with acid mist absorption pipes 4, the acid mist absorption pipe 4 arranged on the first side end protective baffle 3 is taken as an example for description, the acid mist absorption pipe 4 comprises a first end portion and a second end portion, the first end portion is communicated with the inside of the protective cover, the second end portion is communicated with air draft equipment, the acid mist absorption pipe 4 is provided with a water mist spraying pipe 5 and a drainage pipe 6, the water mist spraying pipe 5 and the drainage pipe 6 are both communicated with the acid mist absorption pipe 4, the acid mist absorption pipe 4 is horizontally arranged, the water mist spraying pipe 5 is arranged on the upper pipe wall of the acid mist absorption pipe 4, and the drainage pipe 6 is arranged on the lower pipe wall of the drainage pipe 6.

[0050] The other parts of the embodiment are the same as those of Embodiment 1, which will not be repeated here.

[0051] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A protective device for electrolytic copper foil production, characterized by, The protective cover is arranged at the upper part of the electrolytic cell and is used for protecting the cathode roller after stripping of the electrolytic copper foil, the protective cover comprises connected side end protective baffle and upper end protective baffle, an acid liquid spraying pipe (7) is arranged in the protective cover, the acid liquid spraying pipe (7) is communicated with the acid electrolyte liquid feeding pipe, the acid liquid spraying pipe (7) is arranged horizontally or obliquely, at least one spraying hole (11) is arranged on the pipe wall of the acid liquid spraying pipe (7), and the spraying hole (11) is arranged on the upwardly arranged pipe wall of the acid liquid spraying pipe (7).

2. The protection device for electrolytic copper foil production according to claim 1, characterized by, The side end protective baffle comprises a first side end protective baffle (3) and a second side end protective baffle (16), the upper end protective baffle comprises a front protective baffle (1) and a top protective baffle (2) connected with each other, and the front protective baffle (1) is provided below the protective cover entrance for the rotation of the cathode roller.

3. The protective device for electrolytic copper foil production according to claim 2, characterized by, One end of the acid liquid spraying pipe (7) is arranged on the first side end protective baffle (3), and the other end is arranged on the second side end protective baffle (16).

4. The protective device for electrolytic copper foil production according to claim 2, characterized by, The first side end protective baffle (3) and the second side end protective baffle (16) are both fan-shaped structures, and the top protective baffle (2) is an arc-shaped structure.

5. The protective device for electrolytic copper foil production according to claim 2, characterized by, A spraying observation window (8) is arranged on the top protective baffle (2).

6. The protective device for electrolytic copper foil production according to claim 1, characterized by, When the number of the spraying holes (11) is not one, the spraying holes (11) are uniformly and / or spacedly distributed on the pipe wall of the acid liquid spraying pipe (7).

7. The protective device for electrolytic copper foil production according to claim 1, characterized by, A hoisting mechanism is arranged on the protective cover.

8. The protective device for electrolytic copper foil production according to any one of claims 1 to 7, characterized by, An acid mist absorption pipe (4) is arranged on the side end protective baffle, the acid mist absorption pipe (4) comprises a first end and a second end, the first end is communicated with the inside of the protective cover, and the second end is communicated with the air induction equipment.

9. The protective device for electrolytic copper foil production according to claim 8, characterized by, A water mist spraying pipe (5) and a drain pipe (6) are arranged on the acid mist absorption pipe (4), and the water mist spraying pipe (5) and the drain pipe (6) are both communicated with the acid mist absorption pipe (4).

10. The protective device for electrolytic copper foil production according to claim 8, characterized by, A plurality of acid mist absorption pipes (4) are arranged on the side end protective baffle.

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