A method for recovering metal coatings and its automatic recovery device

Abstract

The present invention discloses a method for recovering a metal coating and an automatic recovery device thereof. The automatic recovery device includes a transfer table, and a manipulator is installed on the top of the transfer table. The manipulator is used to transfer the liner between several other workbenches; a scraping mechanism is arranged on one side of the transfer table. The scraping mechanism includes a support table, and a scraping component is arranged on the support table. The scraping component includes a scraping arm arranged at one end of the support table and moving in the horizontal direction, and a recovery part arranged at the other end of the support table; with the scraping process of the softened metal coating in a molten or semi-molten state as the core, the process efficiency of recovery is effectively improved, and the recovery cost is reduced; the residual metal coating is processed through a grinding process to further improve the recovery rate; through preset process parameters and monitoring in cooperation with weighing, automatic operation and end point determination of scraping and grinding can be achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of thin film deposition, and particularly relates to a method for recovering metal coatings and an automatic recovery device therefor. Background Art

[0002] In the field of thin film deposition, a workpiece to be coated is usually mounted on a backing plate for film deposition. After the deposition process is completed, the coating will also be deposited on the cavity backing plate, especially the backing plate on which the workpiece is mounted. However, the part actually utilized by the workpiece is very limited. For the deposition of some precious metals, it is essential to recover the coating on the backing plate outside the workpiece.

[0003] Currently, the mainstream coating recovery methods include:

[0004] 1. Removing the entire backing plate for recovery: Since the coating is usually very thin compared to the backing plate, it is too costly to scrap the entire backing plate for a small amount of precious metals.

[0005] 2. Milling and grinding the metal coating by machining: The process adopted by this method is relatively rough, which easily leads to splashing and waste of materials, thus reducing the recovery rate.

[0006] 3. Recovering by sandblasting process: The recovered metal coating is mixed with a large amount of sand, and there are too many impurities, which greatly increases the difficulty of further recovery.

[0007] 4. Stripping by soaking in strong alkali: The pressure of wastewater treatment is high, it is not environmentally friendly, and it has high selectivity for the coated metal and process, lacking universality. Summary of the Invention

[0008] The purpose of the present invention is to provide a method for recovering metal coatings and an automatic recovery device therefor, so as to solve the problems of too high recovery cost, great difficulty, and poor universality mentioned in the above background art.

[0009] To achieve the above purpose, the present invention provides the following technical solution: An automatic metal coating recovery device, which includes:

[0010] A transfer table, on the top of which a manipulator is installed, and the manipulator is used to transfer the backing plate between several other workbenches;

[0011] A scraping mechanism, arranged on one side of the transfer table, the scraping mechanism includes a support table, on which a scraping component is arranged, and the scraping component includes a scraping arm arranged at one end of the support table and moving in the horizontal direction, and a recovery member arranged at the other end of the support table;

[0012] The grinding mechanism is arranged adjacent to the scraping mechanism and is distributed on the side of the transfer table. The grinding mechanism includes a grinding table, on which a grinding component is arranged. The grinding component includes a grinding head arranged at one end of the grinding table and moving horizontally, and a collection groove arranged inside the grinding table;

[0013] Clamping hot plates are arranged on both the scraping mechanism and the grinding mechanism. A lining plate is clamped inside the clamping hot plates. The clamping hot plates clamp and heat the lining plate to make the metal coating on the lining plate melt and soften. A metal coating is formed at the bottom of the lining plate. At the same time, the clamping hot plates and the lining plate make a rotary motion driven by a rotating shaft.

[0014] As a preferred technical solution in the present invention, the recovery part includes a collection arm and a recovery groove arranged inside the support table. The bottom of the collection arm extends into the inside of the recovery groove.

[0015] As a preferred technical solution in the present invention, a rotating shaft is installed at the top of the clamping hot plate. A driving device is installed at the top of the rotating shaft. The driving device includes a motor. The rotating shaft is driven to rotate by the driving device. The driving device is installed on the tops of the scraping mechanism and the grinding mechanism.

[0016] As a preferred technical solution in the present invention, feeding mechanisms are arranged at the ends of the grinding head and the scraping arm. The grinding head is driven by the feeding mechanism to make a reciprocating radial motion. Cooperating with the rotation of the lining plate, the entire plate surface is ground and covered. The metal coating debris ground off is collected by the collection groove below.

[0017] As a preferred technical solution in the present invention, the collection arm is inclined and does not contact the lining plate.

[0018] As a preferred technical solution in the present invention, the top opening area of the collection groove is greater than or equal to the cross-section of the lining plate, so as to realize the collection of the ground metal coating. The bottom of the collection groove is in a converging shape, which is convenient for pouring out the collected metal coating.

[0019] As a preferred technical solution in the present invention, a feeding mechanism and a weighing mechanism are further included. The feeding mechanism is arranged adjacent to the grinding mechanism and is also arranged on the side of the transfer table. Multiple layers of shelves are arranged inside the feeding mechanism for temporarily storing the lining plates to be processed and the processed lining plates; The weighing mechanism is arranged on the side of the transfer table and is between the scraping mechanism and the feeding mechanism. An electronic scale is arranged inside the weighing mechanism for weighing the lining plates and then monitoring the recovery progress. In practical applications, the positions of the transfer table, the scraping mechanism, the grinding mechanism, and the feeding mechanism are adjustable and will not cause any impact on the final recovery effect.

[0020] The present invention also discloses a method for recovering a metal coating, which includes an automated recovery device, and specifically includes the following steps:

[0021] Step 1: Use heating to make the metal coating on the substrate reach a molten or semi-molten state, and then use a scraping process to strip most of it off for recovery;

[0022] Step 2: Use a grinding process to further grind and recover the metal materials with strong bonding force close to the substrate to improve the recovery rate;

[0023] Step 3: Use the monitoring of the weight of the substrate to judge the execution end points of the scraping and grinding processes.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. With the scraping process of the softened metal coating in a molten or semi-molten state as the core, the process efficiency of recovery is effectively improved, and the recovery cost is reduced;

[0026] 2. The residual metal coating is processed by a grinding process to further improve the recovery rate;

[0027] 3. Through preset process parameters and combined with weighing monitoring, automated operation and end point determination of scraping and grinding can be achieved;

[0028] 4. High-purity molten metal scraping materials and grinding powders with more liner impurities are separately collected for further recovery and refining according to the material characteristics;

[0029] 5. Since the scraping materials already contain the vast majority of the metal coating, they have high purity, few impurities, and good recovery effect. Description of the Drawings

[0030] Figure 1 is the process flow chart of the automated metal coating recovery of the present invention;

[0031] Figure 2 is the schematic diagram of the module distribution of the automated metal coating recovery device of the present invention;

[0032] Figure 3 is the schematic of the scraping mechanism of the present invention in the scraping state Figure 1 ;

[0033] Figure 4 is the schematic of the scraping mechanism of the present invention in the scraping state Figure 2 ;

[0034] Figure 5 is the structural schematic diagram of the grinding mechanism of the present invention.

[0035] In the figure:

[0036] 100. Transfer table; 101. Manipulator;

[0037] 200. Scraping mechanism; 201. Support table; 202. Recovery tank; 203. Scraping arm; 204. Collection arm;

[0038] 300. Grinding mechanism; 301. Grinding table; 302. Collection tank; 303. Grinding head;

[0039] 400. Loading mechanism;

[0040] 500. Weighing mechanism;

[0041] 600. Liner; 601. Metal coating;

[0042] 700. Clamping hot plate; 701. Rotating shaft. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1 to 5 , the present invention provides a technical solution: an automatic metal coating recovery device, and the automatic recovery device includes:

[0045] A transfer table 100, on the top of the transfer table 100, a manipulator 101 is installed, and the manipulator 101 is used to transfer the liner between several other workbenches;

[0046] A scraping mechanism 200, arranged on one side of the transfer table 100, the scraping mechanism 200 includes a support table 201, and a scraping component is arranged on the support table 201. The scraping component includes a scraping arm 203 arranged at one end of the support table 201 and moving in the horizontal direction, and a recovery member arranged at the other end of the support table 201;

[0047] A grinding mechanism 300, arranged adjacent to the scraping mechanism 200 and distributed on the side of the transfer table 100. The grinding mechanism 300 includes a grinding table 301, and a grinding component is arranged on the grinding table 301. The grinding component includes a grinding head 303 arranged at one end of the grinding table 301 and moving in the horizontal direction, and a collection tank 302 arranged inside the grinding table 301;

[0048] The scraping mechanism 200 and the grinding mechanism 300 are both provided with a clamping hot plate 700. A lining plate 600 is clamped inside the clamping hot plate 700. The clamping hot plate 700 clamps and heats the lining plate 600 to melt and soften the metal coating on the lining plate 600. A metal coating 601 is formed at the bottom of the lining plate 600. At the same time, the clamping hot plate 700 and the lining plate 600 make a rotary motion driven by a rotating shaft 701. The initial height of the scraping arm 203 and the grinding head 303 is preferably flush with the bottom end of the lining plate 600, so as to ensure sufficient recovery. If the grinding head 303 is flush with the bottom end of the metal coating 601, only the surface coating may be ground.

[0049] In this embodiment, the recovery member includes a collecting arm 204 and a recovery groove 202 provided inside the support table 201. The bottom of the collecting arm 204 extends into the interior of the recovery groove 202. The scraping arm 203 makes a reciprocating scraping motion along the radial direction, and cooperates with the rotation of the lining plate 600 to achieve scraping coverage of the entire plate surface. After the wedge-shaped scraper at the head of the scraping arm 203 shovels off the molten metal, it will scrape against the collecting arm 204 provided on one side of the device, so that the molten metal on the scraping arm 203 is transferred to the collecting arm 204. The collecting arm 204 is continuously heated so that the molten metal will not completely solidify and can slowly fall into the recovery groove 202 for collection.

[0050] In this embodiment, a rotating shaft 701 is installed at the top of the clamping hot plate 700. A driving device is installed at the top of the rotating shaft 701. The driving device includes a motor. The driving device drives the rotating shaft 701 to rotate, and the driving device is installed at the top of the scraping mechanism 200 and the grinding mechanism 300.

[0051] In this embodiment, a feed mechanism is provided at the end of both the grinding head 303 and the scraping arm 203. The grinding head 303 is driven by the feed mechanism to make a reciprocating radial motion, and cooperates with the rotation of the lining plate 600 to achieve grinding coverage of the entire plate surface. The metal coating debris ground off is collected by the collecting groove 302 below.

[0052] In this embodiment, the collecting arm 204 is inclined and does not contact the lining plate 600.

[0053] In this embodiment, the top opening area of the collecting groove 302 is greater than or equal to the cross-section of the lining plate 600, so as to achieve the collection of the ground metal coating 601. The bottom of the collecting groove 302 is in a converging shape, which is convenient for pouring out the collected metal coating 601.

[0054] In this embodiment, a feeding mechanism 400 and a weighing mechanism 500 are further included. The feeding mechanism 400 is disposed adjacent to the grinding mechanism 300 and is also arranged on the side of the transfer table 100. Multiple layers of shelves are provided in the feeding mechanism 400 for temporarily storing the liners to be processed and those that have been processed. The weighing mechanism 500 is arranged on the side of the transfer table 100 and is located between the scraping mechanism 200 and the feeding mechanism 400. An electronic scale is provided in the weighing mechanism 500 for weighing the liners to monitor the recycling progress. In practical applications, the positions of the transfer table 100, the scraping mechanism 200, the grinding mechanism 300, and the feeding mechanism 400 are adjustable and will not have any impact on the final recycling effect.

[0055] The present invention also discloses a method for recycling a metal coating, which includes an automated recycling device and specifically comprises the following steps:

[0056] Step 1: Heat is used to make the metal coating on the substrate reach a molten or semi-molten state, and then most of it is stripped off by the scraping process for recycling. Before the recycling process starts, according to the weight M0 of the uncoated liner, a weight M1 slightly higher than it can be determined as the scraping termination line, and a weight M2 slightly lower than it can be determined as the grinding termination line. The reason for such a setting is that the scraping process is aimed at the easily stripped molten and softened metal coating, especially some relatively low-melting-point precious metal alloy solders. The coating close to the liner often has a strong bonding force and is not easily scraped off. Therefore, a small amount of metal coating needs to be allowed to remain on the liner. And during the grinding process, sufficient metal recovery rate needs to be ensured, so necessary excessive grinding is required. After determining the process parameters M1 and M2, weigh the current weight of the liner and then perform scraping. After scraping for a period of time, it is necessary to repeat weighing until the weight is less than the scraping termination line M1;

[0057] Step 2: Use the grinding process to further grind and recycle the metal materials with strong bonding force close to the substrate to improve the recovery rate, and also repeat the grinding - weighing step until the weighing is less than the grinding termination line M2;

[0058] Step 3: Use the monitoring of the substrate weight to judge the execution end points of the scraping and grinding processes.

[0059] Although the embodiments of the present invention have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic recovery device for metal coatings, characterized in that: The automated recycling device includes: A transfer table (100), on the top of which a manipulator (101) is installed; A scraping mechanism (200), arranged on one side of the transfer table (100). The scraping mechanism (200) includes a support table (201), and a scraping component is arranged on the support table (201). The scraping component includes a scraping arm (203) arranged at one end of the support table (201) and moving in the horizontal direction, and a recycling part arranged at the other end of the support table (201); A grinding mechanism (300), adjacent to the scraping mechanism (200) and distributed on the side of the transfer table (100). The grinding mechanism (300) includes a grinding table (301), and a grinding component is arranged on the grinding table (301). The grinding component includes a grinding head (303) arranged at one end of the grinding table (301) and moving in the horizontal direction, and a collection groove (302) arranged inside the grinding table (301); Clamping hot plates (700) are arranged on both the scraping mechanism (200) and the grinding mechanism (300). A lining plate (600) is clamped inside the clamping hot plates (700), and a metal coating (601) is formed at the bottom of the lining plate (600); Feeding mechanisms are arranged at the ends of both the grinding head (303) and the scraping arm (203), and the grinding head (303) is driven by the feeding mechanism to perform radial reciprocating motion.

2. The automatic metal coating recycling device according to claim 1, wherein: The recycling part includes a collection arm (204) and a recycling groove (202) arranged inside the support table (201). The bottom of the collection arm (204) extends into the inside of the recycling groove (202).

3. An automatic metal plating recycling device according to claim 1, characterized in that: A rotating shaft (701) is installed on the top of the clamping hot plate (700), and a driving device is installed on the top of the rotating shaft (701). The driving device includes a motor, and the driving device is installed on the tops of the scraping mechanism (200) and the grinding mechanism (300).

4. The automated metal plating recycling device according to claim 2, wherein: The collection arm (204) is inclined, and there is no contact between the collection arm (204) and the lining plate (600).

5. The automatic metal plating recycling device according to claim 1, characterized in that: The top opening area of the collection groove (302) is greater than or equal to the cross-section of the lining plate (600), and the bottom of the collection groove (302) is in a converging shape.

6. The automatic metal plating recovery device according to claim 1, characterized in that: It also includes a feeding mechanism (400) and a weighing mechanism (500). The feeding mechanism (400) is adjacent to the grinding mechanism (300) and is also arranged on the side of the transfer table (100); the weighing mechanism (500) is arranged on the side of the transfer table (100) and is between the scraping mechanism (200) and the feeding mechanism (400). An electronic scale is arranged inside the weighing mechanism (500).

7. A method for recovering a metal coating, comprising the automated recovery device according to any one of claims 1 to 6, characterized in that: Specifically, it includes the following steps: Step 1: Heat to make the metal coating on the substrate reach the molten or semi-molten state, and then use the scraping process to strip most of it off for recycling; Step 2: Use the grinding process to further grind and recycle the metal materials with strong bonding force close to the substrate to improve the recovery rate; Step 3: Use the monitoring of the substrate weight to judge the execution end points of the scraping and grinding processes.

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