Pre-stripping device for electrodeposited metal layer in hydrometallurgy industry and use method of pre-stripping device

Abstract

The invention provides a pre-stripping device for an electrodeposition metal layer in the hydrometallurgy industry and a using method of the pre-stripping device. The pre-stripping device comprises a cathode plate conveying chain, a side face front pre-stripping mechanism and a side face pre-stripping mechanism, and the side face front pre-stripping mechanism and the side face pre-stripping mechanism are arranged on the same side of the cathode plate conveying chain; the side face front pre-stripping mechanism and the side face pre-stripping mechanism are correspondingly provided with clamping mechanisms on the two sides of the cathode plate conveying chain respectively. And the side surface front pre-stripping mechanism and the side surface pre-stripping mechanism are used for carrying out front stripping for opening a gap and pre-stripping for expanding the opening on the cathode plate respectively. The side face front pre-stripping mechanism is additionally arranged in front of the side face pre-stripping mechanism, a notch is formed in one side of a cathode plate and one side of a zinc sheet through a lateral short-handle cutter, opening expansion of a long-handle cutter for follow-up pre-stripping is facilitated, the pre-opening method of front pre-stripping and pre-stripping combined operation is adopted, the success rate of side face pre-stripping can be increased, and the service life of the cathode plate and the zinc sheet is prolonged. Conditions are created for subsequent successful stripping of the main stripping knife.

Description

Technical Field

[0001] The invention relates to the technical field of hydrometallurgical zinc smelting equipment, and in particular to a pre-stripping device for an electrolytically deposited metal layer in the hydrometallurgical industry and a method for using the device. Background Art

[0002] In industrial production in the field of hydrometallurgy, the electrolytic extraction method is often used to produce pure metals such as gold, silver, copper, zinc, nickel, and cobalt from solutions. In practice, the target metal (such as zinc) is deposited on the exposed surface of the cathode plate (taking zinc as an example, the cathode plate itself is an aluminum plate) in the electrolytic cell by electrolysis (in order to separate the target metal from the cathode plate and avoid forming a whole block, the edges of the cathode plate on both sides are usually wrapped with rubber so that the metal deposited on both sides of the cathode plate are two separate parts). When the deposited metal layer reaches a certain thickness, the plate is lifted out of the electrolytic cell by a crane, and the metal layer deposited on the cathode plate is stripped from the cathode plate itself using a zinc stripping system or manually. After stripping, the cathode plate is cleaned, and the plate is hoisted into the electrolytic cell again by a crane for electrolysis and recycled.

[0003] The zinc stripping system mainly includes two processes: pre-stripping and main stripping. The zinc stripping equipment is divided into pre-stripping equipment and main stripping equipment. The two stripping processes are independent of each other and do not interfere with each other. The pre-stripping equipment and the main stripping equipment work in parallel. The zinc-bearing cathode plate is placed on the cathode plate conveyor chain and starts to step according to a fixed cycle. It reaches the pre-stripping device to complete the pre-opening of the zinc sheet; then it moves to the main stripping position to complete the overall stripping of the zinc sheet.

[0004] There are two main types of pre-stripping equipment: top pre-opening and side pre-opening. The pre-stripping equipment with top pre-opening, that is, the pre-stripping knife is placed on the upper end of the cathode plate. When the cathode plate enters the pre-stripping equipment, a gap is opened on the zinc sheet by a combination of multiple knives, synchronous clamping, and asynchronous action. Then the cathode plate with the gap opened enters the main stripping equipment to complete the stripping of the zinc sheet. However, the pre-stripping equipment with top pre-opening has high requirements for the stripping disc on the cathode plate (the stripping disc is an insulator set on the cathode plate). If the stripping disc is damaged, it may cause the zinc sheets on both sides of the cathode plate to stick to each other from the position of the upper stripping disc, resulting in difficulty in pre-opening or even failure to complete the pre-opening. The pre-stripping equipment with side pre-opening is to advance the stripping disc arranged on one side of the cathode plate, thereby opening a gap above the cathode plate. Then the cathode plate with the gap opened enters the main stripping equipment to complete the stripping of the zinc sheet. When the pre-stripping equipment with side pre-opening is adopted, the stripping disc is arranged on one side of the cathode plate. When the stripping disc is damaged, it is easier to replace, which effectively reduces the use cost of the cathode plate. In zinc stripping workshops with limited vertical working space, as well as some foreign smelters, side pre-opening pre-stripping is required. Therefore, it is necessary to design a side pre-stripping device. Summary of the invention

[0005] The purpose of the present invention is to provide a pre-stripping device for electrolytic metal layer in the hydrometallurgical industry and a method for using the same, which effectively solves the problem of difficult stripping caused by the strong bonding force between the zinc sheet and the cathode plate. Through the lateral pre-stripping device with front pre-stripping and its combined opening method, the precise positioning of the cathode plate and the efficient stripping of the tool are achieved, the success rate of pre-stripping is improved and the risk of cathode plate damage is reduced.

[0006] According to one object of the present invention, the present invention provides a pre-stripping device for electrolytic metal layer in hydrometallurgical industry, which is used to strip metal zinc sheets from cathode plates in the process of hydrometallurgical zinc smelting, comprising:

[0007] Cathode plate transport chain;

[0008] A side front pre-stripping mechanism, arranged on one side of the cathode plate transmission chain;

[0009] A side pre-stripping mechanism, arranged on one side of the cathode plate transmission chain;

[0010] The side front pre-stripping mechanism and the side pre-stripping mechanism are respectively provided with clamping mechanisms on both sides of the cathode plate transmission chain;

[0011] The side front pre-stripping mechanism and the side pre-stripping mechanism continuously perform pre-opening processing on the cathode plate.

[0012] Furthermore, the side front pre-stripping mechanism and the side pre-stripping mechanism are on the same side of the cathode plate conveying chain.

[0013] Furthermore, based on the transmission direction of the cathode plate transmission chain, the side front pre-stripping mechanism is in front, and the side pre-stripping mechanism is in the back.

[0014] Furthermore, the side front pre-stripping mechanism comprises:

[0015] front pre-rack;

[0016] A front pre-clamping assembly, arranged on the front pre-frame, for clamping the cathode plate;

[0017] A front pre-telescopic oil cylinder is fixed on the front pre-frame;

[0018] A front pre-stripping scissor fork opening and closing mechanism, connected to the front pre-telescopic oil cylinder;

[0019] A short-handled tool is arranged on the front pre-stripping scissor fork opening and closing mechanism and is used for opening a gap between the cathode plate and the zinc sheet.

[0020] Furthermore, the side pre-peeling mechanism comprises:

[0021] Pre-rack;

[0022] A pre-clamping assembly, arranged on the pre-frame, for clamping the cathode plate;

[0023] A pre-telescopic oil cylinder is fixed on the pre-frame;

[0024] A pre-stripping scissor fork opening and closing mechanism, connected to the pre-telescopic oil cylinder;

[0025] A long-handled tool is arranged on the pre-stripping scissor fork opening and closing mechanism and is used for completely opening the gap between the cathode plate and the upper edge of the zinc sheet.

[0026] Further, the cathode plate conveying chain, the side front pre-stripping mechanism and the side pre-stripping mechanism are configured to operate synchronously.

[0027] Furthermore, the front pre-stripping scissor fork opening and closing mechanism and the pre-stripping scissor fork opening and closing mechanism both include a scissor fork connecting piece, a scissor fork and an opening and closing oil cylinder, the scissor fork is hingedly connected to the scissor fork connecting piece, the opening and closing oil cylinder is connected to the scissor fork, and the long-handled tool or the short-handled tool is connected to the scissor fork;

[0028] The long-handled tool includes a tool bar and a blade. The tool bar is a wedge-shaped structure. The tool bar is thin near the blade and thick near the frame. The blade is stepped. The blade is connected to the tool bar by bolts. The two blades are combined to leave a gap in the middle of the tool bar, which facilitates the blade to fit the cathode plate when the tool is fed to cut the opening.

[0029] Furthermore, the front pre-clamping assembly and the pre-clamping assembly include a clamp, a clamping cylinder, a guide rail assembly and a slider assembly, the clamp is in a V-shaped structure, and the clamp is installed on the guide rail assembly.

[0030] According to another object of the present invention, the present invention provides a method for using the above-mentioned pre-stripping device for electrolytic metal layer in the hydrometallurgical industry, comprising the following steps:

[0031] The cathode plate is sent to the side front pre-stripping mechanism through the cathode plate transmission chain, and the clamping components on both sides of the cathode plate transmission chain extend to clamp and fix the cathode plate;

[0032] The side front pre-stripping mechanism forms a gap between the cathode plate and the zinc sheet;

[0033] The cathode plate is sent to the side pre-stripping mechanism, and the clamping components on both sides of the cathode plate transmission chain extend to clamp and fix the cathode plate;

[0034] The side pre-stripping mechanism further expands the gap in the formed gap, and completely opens the upper edge gap between the cathode plate and the zinc sheet.

[0035] Furthermore, in the steps of forming the gap and further expanding the gap, the clamping assembly uses V-shaped clamps on both sides to center the cathode plate at the front, back, left and right.

[0036] The technical solution of the present invention adds a side front pre-stripping mechanism and clamping mechanisms on both sides of the cathode plate in front of the side pre-stripping mechanism, and uses a side short-handled tool to open a gap on one side of the cathode plate and the zinc sheet to facilitate the subsequent entry opening of a long-handled tool. The pre-stripping method of the combined operation of front pre-stripping and pre-stripping can improve the success rate of side pre-stripping and create conditions for the successful stripping of the zinc sheet by the subsequent main stripping knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0039] Figure 2 It is a structural schematic diagram of the side front pre-peeling mechanism according to an embodiment of the present invention;

[0040] Figure 3 It is a structural schematic diagram of the front pre-stripping knife assembly of an embodiment of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the side pre-peeling mechanism according to an embodiment of the present invention;

[0042] Figure 5 It is a structural schematic diagram of the pre-peeling scissor fork opening and closing mechanism according to an embodiment of the present invention;

[0043] Figure 6 It is a schematic structural diagram of the scissor fork of the pre-stripping scissor fork opening and closing mechanism according to an embodiment of the present invention;

[0044] Figure 7 This is a schematic structural diagram of a long-handled knife according to an embodiment of the present invention;

[0045] Figure 8 It is a structural schematic diagram of a pre-clamping assembly according to an embodiment of the present invention;

[0046] Fig. 9 It is a schematic structural diagram of a V-shaped clamp according to an embodiment of the present invention;

[0047] Fig.10 Schematic diagram of the feed position during pre-stripping of the cathode plate according to an embodiment of the present invention.

[0048] In the figure: 100, cathode plate transmission chain; 200, side front pre-stripping mechanism; 300, side pre-stripping mechanism; 400, zinc-bearing cathode plate;

[0049] 201, front pre-frame; 202, front pre-telescopic oil cylinder; 203, front pre-guide rail slider assembly; 204, front pre-stripping scissor fork opening and closing mechanism; 205, short handle knife; 206, front pre-clamping assembly;

[0050] 301, pre-frame; 302, pre-telescopic oil cylinder; 303, pre-guide rail slider assembly; 304, pre-stripping scissor fork opening and closing mechanism; 305, long-handled knife; 306, pre-clamping assembly;

[0051] 41. Scissor fork connector; 42. Scissor fork; 43. Opening and closing cylinder;

[0052] 51. Knife handle; 52. Knife blade;

[0053] 61. Clamp; 62. Clamping cylinder; 63. Guide rail assembly; 64. Slider assembly; 65. Limiting assembly. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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 invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Example 1

[0058] like Figure 1-Figure 10 As shown:

[0059] A pre-stripping device for electrolytically deposited metal layers in the hydrometallurgical industry comprises a cathode plate transmission chain 100, a side front pre-stripping mechanism 200 and a side pre-stripping mechanism 300. The side front pre-stripping mechanism 200 and the side pre-stripping mechanism 300 are arranged on the same side of the cathode plate transmission chain 100. The transmission direction of the cathode plate transmission chain is taken as the standard, and the side front pre-stripping mechanism 200 is arranged in front of the side pre-stripping mechanism 300.

[0060] like Figure 2 and Figure 3 As shown, specifically, the side front pre-stripping mechanism 200 includes a front pre-frame 201, a front pre-telescopic oil cylinder 202, a front pre-guide rail slider assembly 203, a front pre-stripping scissor fork opening and closing mechanism 204, a short handle knife 205 and a front pre-clamping assembly 206. The front pre-frame 201 is arranged on both sides of the cathode plate transmission chain 100, and the front pre-clamping assembly 206 is fixed on the front pre-frame 201 on both sides. The front pre-telescopic oil cylinder 202 is fixed on the front pre-frame 201 on one side, the front pre-guide rail slider assembly 203 is connected to the telescopic end of the front pre-telescopic oil cylinder 202, the front pre-stripping scissor fork opening and closing mechanism 204 is connected to the front pre-guide rail slider assembly 203, and the short handle knife 205 is arranged on the front pre-stripping scissor fork opening and closing mechanism 204.

[0061] Likewise, if Figure 4-Figure 7As shown, the side pre-stripping mechanism 300 includes a pre-frame 301, a pre-telescopic oil cylinder 302, a pre-guide rail slider assembly 303, a pre-stripping scissor fork opening and closing mechanism 304, a long handle knife 305 and a pre-clamping assembly 306; the pre-frame 301 is arranged on both sides of the cathode plate transmission chain 100, and the pre-clamping assembly 306 is fixed on the pre-frame 301 on both sides. The pre-telescopic oil cylinder 302 is fixed on the pre-frame 301 on one side, the pre-guide rail slider assembly 303 is connected to the telescopic end of the pre-telescopic oil cylinder 302, the pre-stripping scissor fork opening and closing mechanism 304 is connected to the pre-guide rail slider assembly 303, and the long handle knife 305 is arranged on the pre-stripping scissor fork opening and closing mechanism 304.

[0062] In this embodiment, the entire structure of the side front pre-stripping mechanism 200 and the side pre-stripping mechanism 300 is installed on the frame. The clamping structure of the side front pre-stripping mechanism 200 and the side pre-stripping mechanism 300 realizes the clamping of the zinc-containing cathode plate 400 and fixes the zinc-containing cathode plate 400; the movement of the side front pre-stripping mechanism 200 and the side pre-stripping mechanism 300 is to drive the stripping scissor fork opening and closing mechanism to move through the guide rail slider through the correspondingly set telescopic oil cylinder to realize the forward or backward movement of the tool. And the long-handled knife or the short-handled knife is driven by the movement of the stripping scissor fork opening and closing mechanism to realize the clamping or loosening of the tool.

[0063] like Figure 5 As shown, the pre-stripping scissors fork opening and closing mechanism 304 includes a scissors fork connector 41, a scissors fork 42 and an opening and closing cylinder 43. The opening and closing cylinder 43 is extended and retracted through the scissors fork connector 41 and the scissors fork 42 to drive the long-handled knife 305 installed on the scissors fork to move, thereby achieving the clamping or loosening of the knife and the forward and backward movement of the knife.

[0064] In this embodiment, the long-handled knife 305 (or the short-handled knife 205) includes two symmetrically arranged blades, which are respectively fixedly connected to the scissor fork 42. The opening and closing of the two blades are controlled by the scissor fork 42, and when the two blades are closed, the two blades can clamp the zinc-containing cathode plate, and the blade can be between the zinc sheet and the cathode plate, and the blade opens a gap between the zinc sheet and the cathode plate along the feed direction. The long-handled knife 305 includes a knife bar 51 and a blade 52, the knife bar 51 is wedge-shaped (thin near the blade 52, thick near the pre-frame 301), and the blade 52 is stepped and bolted to the knife bar. The two blades are merged and a gap is left in the middle of the knife bar 51, which is conducive to the blade fitting the cathode plate when the knife is fed to cut the opening.

[0065] This embodiment adopts a small-sized and high-rigidity pre-stripping tool holder and a rectangular square steel structure, which is more reliable when feeding the tool over a long stroke.

[0066] In this embodiment, the front pre-stripping scissor fork opening and closing mechanism 204 has the same structure and working principle as the pre-stripping scissor fork opening and closing mechanism 304 .

[0067] In this embodiment, the pre-stripping scissors fork opening and closing mechanism 304 and the front pre-stripping scissors fork opening and closing mechanism 204 have precise guiding. The tools are connected through two synchronously rotating shaft-type scissors fork structures and guide rail slider mechanisms, so that the front pre-stripping tool and the pre-stripping tool are synchronously attached to the two sides of the cathode plate, and the tool is precisely guided along the gap between the zinc sheet and the cathode plate.

[0068] like Figure 8 and Fig. 9 As shown, the pre-clamping assembly 306 includes a clamp 61, a clamping cylinder 62, a guide rail assembly 63, a slider assembly 64 and a limit assembly 65. The clamp 61 is installed on the guide rail assembly 63, and the slider assembly 64 is fixed on the frame 1. The guide rail assembly 63 is driven to move in the slider assembly 64 by the extension and retraction of the clamp 61, thereby realizing the extension and retraction of the clamp 61.

[0069] In this embodiment, the front pre-clamping assembly 206 has the same structure and working principle as the pre-clamping assembly 306 .

[0070] When used, the present invention comprises the following steps:

[0071] like Fig.10 As shown, when the zinc-bearing cathode plate is transferred to the front pre-stripping station, the front pre-clamping components 206 on the left and right sides of the side front pre-stripping mechanism 200 extend to clamp and fix the cathode plate, the opening and closing cylinder extends to clamp the tool at the stripping disc at the edge of the zinc sheet and the cathode plate through the scissor fork structure, the telescopic cylinder extends to drive the tool forward through the guide rail slider, and the blade opens a gap between the zinc sheet and the side of the cathode plate along the feed direction, then the opening and closing cylinder retracts to open the tool, the telescopic cylinder retracts to retract the tool, the clamping mechanism retracts, and the entire side front pre-stripping mechanism 200 returns to the initial state to wait for the next zinc-bearing cathode plate to arrive;

[0072] Then the notched zinc cathode plate is transmitted to the side pre-stripping mechanism 300 by the cathode plate transmission chain 100. The side pre-stripping mechanism 300 follows the same operation sequence as the side front pre-stripping mechanism 200. The long-handled knife 305 cuts along the notch to further expand the gap opened between the zinc sheet and the upper edge of the cathode plate, and then enters the main stripping station to create conditions for the main stripping to strip off the entire zinc sheet.

[0073] The present invention uses the front pre-stripping short-handled knife 205 to generate a greater cutting force to open a small gap on the side of the cathode plate and the zinc sheet, which is convenient for the subsequent pre-stripping long-handled knife 305 to cut along the opened gap. The front pre-stripping and pre-stripping combined operations improve the pre-opening success rate.

[0074] The cathode plate precise positioning technology of the present invention requires that the cathode plate be fixed before the zinc-bearing cathode plate arrives at the pre-stripping station and the pre-stripping station, and the tool advances, and the cathode plate is clamped in the middle position by the left and right clamping mechanisms, and the clamping mechanisms use V-shaped clamps to center and position the front, rear, left and right positions of the cathode plate, so that the cathode plate can be quickly and accurately fixed in position.

[0075] The present invention uses a scissor-fork type tool opening and closing mechanism and a double slider guide structure to adjust the optimal feed speed, realize cathode plate positioning readiness, feed guidance, a long handle knife bar wedge design and a blade step design, which not only ensures that the tool does not damage the cathode plate but also accurately fits the surface of the cathode plate, and the structure is reasonably stressed, ensuring the success rate of pre-stripping and pre-opening, and increasing equipment reliability. The double-sided clamping and positioning mechanisms of the cathode plate are controlled separately, quickly and accurately stabilize the cathode plate, and the structure is compact and easy to adjust.

[0076] The present invention adopts the method of pre-stripping and pre-stripping combined with pre-opening, and the two structures are basically the same, so that the equipment structure is more compact, maintenance is more convenient, and the opening effect is better. The pre-opening method of opening a small gap between the side cathode plate and the zinc sheet before pre-stripping can increase the success rate of side pre-stripping.

[0077] The present invention arranges the front pre-stripping tool and the pre-stripping tool on one side of the upper end of the cathode plate, and adopts the two devices to work together to open a gap on the zinc sheet and the upper edge of the cathode plate so that the main stripping knife can complete the stripping of the zinc sheet. It is used for stripping the cathode plate that is not suitable for the top pre-opening method, and solves the problem of limited vertical space.

[0078] The pre-stripping knife assembly and the clamping assembly of the present invention are separated and controlled separately, and the structure is simple and compact, and the pre-stripping and pre-opening effects are better. The upper space is saved, and a zinc stripping pre-opening solution is provided for zinc smelting workshops with limited vertical space. The present invention is not only used in the field of electrolytic zinc, but also falls within the protection scope of the present invention as long as the stripping form of knife shoveling is used for opening operations.

[0079] In order to increase the success rate of pre-stripping and pre-opening, the present invention adds a front pre-stripping device in front of the pre-stripping device, uses a lateral short-handled knife to open a gap on one side of the cathode plate and the zinc sheet, which is convenient for the subsequent long-handled knife to enter the opening, and adopts a pre-opening method of front pre-stripping and pre-stripping combined operation. When the pre-stripping device with a side pre-opening method is adopted, the stripping disk is arranged on one side of the cathode plate. When the stripping disk is damaged, it is easier to replace, which effectively reduces the use cost of the cathode plate. The replacement frequency of the cathode plate is reduced and the use time is extended, thereby achieving cost reduction and efficiency improvement. At the same time, the pre-stripping device with front pre-stripping can greatly improve the success rate of pre-stripping and create conditions for the successful zinc stripping of the subsequent main stripping knife.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pre-stripping device for electrolytic metal layer in the hydrometallurgical industry, characterized in that: include: Cathode plate transport chain; A side front pre-stripping mechanism, arranged on one side of the cathode plate transmission chain; A side pre-stripping mechanism, arranged on one side of the cathode plate transmission chain; The side front pre-stripping mechanism and the side pre-stripping mechanism are respectively provided with clamping mechanisms on both sides of the cathode plate transmission chain; The side front pre-stripping mechanism and the side pre-stripping mechanism continuously perform pre-opening processing on the cathode plate.

2. The pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 1, characterized in that: The side front pre-stripping mechanism and the side pre-stripping mechanism are on the same side of the cathode plate conveying chain.

3. The pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 1, characterized in that: Based on the transmission direction of the cathode plate transmission chain, the side front pre-stripping mechanism is in front, and the side pre-stripping mechanism is in the back.

4. The pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 1, characterized in that: The side front pre-stripping mechanism comprises: front pre-rack; A front pre-clamping assembly, arranged on the front pre-frame, for clamping the cathode plate; A front pre-telescopic oil cylinder is fixed on the front pre-frame; A front pre-stripping scissor fork opening and closing mechanism, connected to the front pre-telescopic oil cylinder; A short-handled tool is arranged on the front pre-stripping scissor fork opening and closing mechanism and is used for opening a gap between the cathode plate and the zinc sheet.

5. The pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 4, characterized in that: The side pre-peeling mechanism comprises: Pre-rack; A pre-clamping assembly, arranged on the pre-frame, for clamping the cathode plate; A pre-telescopic oil cylinder is fixed on the pre-frame; A pre-stripping scissor fork opening and closing mechanism, connected to the pre-telescopic oil cylinder; A long-handled tool is arranged on the pre-stripping scissor fork opening and closing mechanism and is used for completely opening the gap between the cathode plate and the upper edge of the zinc sheet.

6. The pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 1, characterized in that: The cathode plate conveying chain, the side front pre-stripping mechanism and the side pre-stripping mechanism are configured to operate synchronously.

7. The pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 5, characterized in that: The front pre-stripping scissor fork opening and closing mechanism and the pre-stripping scissor fork opening and closing mechanism both include a scissor fork connecting piece, a scissor fork and an opening and closing oil cylinder, the scissor fork is hingedly connected to the scissor fork connecting piece, the opening and closing oil cylinder is connected to the scissor fork, and the long-handled tool or the short-handled tool is connected to the scissor fork; The long-handled tool includes a tool bar and a blade. The tool bar is a wedge-shaped structure. The tool bar is thin near the blade and thick near the frame. The blade is stepped. The blade is connected to the tool bar by bolts. The two blades are combined to leave a gap in the middle of the tool bar, which facilitates the blade to fit the cathode plate when the tool is fed to cut the opening.

8. The pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 7, characterized in that: The front pre-clamping assembly and the pre-clamping assembly include a clamp, a clamping cylinder, a guide rail assembly and a slider assembly. The clamp is in a V-shaped structure and is installed on the guide rail assembly.

9. The method for using the pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to any one of claims 1 to 8, characterized in that: The following steps are involved: The cathode plate is sent to the side front pre-stripping mechanism through the cathode plate transmission chain, and the clamping components on both sides of the cathode plate transmission chain extend to clamp and fix the cathode plate; The side front pre-stripping mechanism forms a gap between the cathode plate and the zinc sheet; The cathode plate is sent to the side pre-stripping mechanism, and the clamping components on both sides of the cathode plate transmission chain extend to clamp and stabilize the cathode plate; The side pre-stripping mechanism further expands the gap in the formed gap, and completely opens the upper edge gap between the cathode plate and the zinc sheet.

10. The method for using the pre-stripping device for electrolytic metal layer in the hydrometallurgical industry according to claim 9, characterized in that: In the steps of forming the gap and further expanding the gap, the clamping assembly uses V-shaped clamps on both sides to align the cathode plate front, back, left and right to fix it.

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