Electrolytic polishing production line

Abstract

The invention provides an electrolytic polishing production line which comprises a first cleaning line, electrolytic polishing equipment and a second cleaning line, and the length direction of the second cleaning line is parallel to or perpendicular to the length direction of the first cleaning line; the electrolytic polishing equipment comprises a bearing disc and a driving shaft coaxially fixed to the bearing disc, a plurality of first electrodes are evenly distributed on the upper surface of the bearing disc around the driving shaft, the first cleaning line conveys workpieces from a feeding point to the bearing disc, and the bottoms of the workpieces are attached to the first electrodes; the bearing disc is provided with a group of second electrodes corresponding to each first electrode; the driving shaft drives the bearing disc to rotate circumferentially so as to drive the workpiece to rotate to the discharging point, the workpiece is conveyed to the second cleaning line from the discharging point, and the second cleaning line drives the workpiece to move in the direction away from the electrolytic polishing equipment. The electrolytic polishing production line is used for solving the problem that an electrolytic polishing production line in the prior art occupies a large production space, and has the effects of effectively reducing the electrolyte treatment capacity and prolonging the electrolytic polishing service life.

Description

Technical Field

[0001] The invention relates to the technical field of metal surface treatment, in particular to an electrolytic polishing production line. Background Art

[0002] The electrolytic polishing process mainly includes three steps: pre-cleaning, electrolytic polishing, and post-polishing cleaning. The purpose of the pre-cleaning step and the post-polishing cleaning step is to remove chemical pollutants on the workpiece surface before electrolysis, and to remove electrolytic residues and electrolyte residues on the workpiece surface after electrolysis. In the pre-cleaning step and the post-polishing cleaning step, the workpiece usually needs to pass through one or more cleaning tanks. In the prior art, the several cleaning tanks in the pre-cleaning step, the electrolytic polishing equipment, and the several cleaning tanks in the post-polishing cleaning step are distributed in a linear manner, which has the problem of occupying a large production space.

[0003] Also, the electrolytic polishing equipment in the prior art usually needs to have a liquid reservoir for storing electrolyte to immerse the workpiece for electrolytic polishing, or for connecting the electrolytic rod to provide electrolyte for injection into the workpiece. The liquid reservoir used for immersing the workpiece in the aforementioned prior art is an electrolytic tank, and it is necessary to inject electrolyte into the electrolytic tank that is much larger than the capacity of the workpiece in the form of a container. After the electrolytic polishing is completed, a large amount of electrolyte needs to be treated for environmental protection, resulting in increased production costs. In the prior art where the liquid reservoir is used to supply liquid to the electrolytic rod, the workpiece is placed in an inverted manner. In order to avoid leakage, a seal is required to seal the opening of the workpiece. The long-term insertion or removal of the workpiece from the seal may cause the sealing effect of the seal to decrease, thereby affecting the normal progress of the electrolytic polishing.

[0004] In view of this, it is necessary to improve the electrolytic polishing production line in the prior art to solve the above problems. The above introduction to the background technology is only for the convenience of a clear and complete description of the technical solution of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0005] The purpose of the present invention is to disclose an electrolytic polishing production line to solve the problem of occupying a large production space in the prior art electrolytic polishing production line, and to effectively reduce the electrolyte processing volume and increase the service life of the electrolytic polishing, so as to effectively reduce the production cost.

[0006] To achieve the above object, the present invention provides an electrolytic polishing production line, comprising: a first cleaning line, an electrolytic polishing device, and a second cleaning line, wherein the length directions of the second cleaning line and the first cleaning line are parallel or perpendicular to each other;

[0007] The electrolytic polishing equipment comprises: a support tray and a driving shaft coaxially fixed to the support tray, a plurality of first electrodes are evenly distributed on the upper surface of the support tray around the driving shaft, the first cleaning line transfers the workpiece from the loading point to the support tray and the bottom of the workpiece is in contact with the first electrode;

[0008] The tray is provided with a group of second electrodes corresponding to each first electrode, the second electrodes are hollow inside and the top and bottom ends are provided with a liquid inlet and a liquid outlet, and one end of the second electrode forming the liquid outlet extends into the opening of the workpiece to inject electrolyte into the workpiece;

[0009] The driving shaft drives the support tray to rotate in a circular motion to drive the workpiece to rotate to a discharge point, and the workpiece is transferred from the discharge point to a second cleaning line, and the second cleaning line drives the workpiece to move in a direction away from the electrolytic polishing equipment.

[0010] As a further improvement of the present invention, a transfer device is provided between the first cleaning line and the second cleaning line, the transfer device transfers the workpiece from the first cleaning line to the first electrode where the tray rotates to the loading point, and the transfer device transfers the workpiece from the tray rotates to the first electrode where the tray rotates to the unloading point to the second cleaning line;

[0011] The first cleaning line includes a first conveying mechanism and at least one pre-cleaning tank, wherein the first conveying mechanism drives the workpiece in the pre-cleaning tank to remove existing chemical pollutants;

[0012] The second cleaning line includes a second conveying mechanism and at least one re-cleaning tank, and the second conveying mechanism drives the workpiece in the re-cleaning tank to remove existing electrolytic polishing contaminants.

[0013] As a further improvement of the present invention, the electrolytic polishing equipment also includes: a frame, each group of the second electrodes is connected to the upper surface of the supporting tray through a group of lifting devices, the frame is located above the supporting tray and a driving mechanism is arranged, the loading point and the unloading point are at the same position and are located directly below the driving mechanism, and the driving mechanism drives the lifting device located directly below to move the second electrode in a direction away from the first electrode.

[0014] As a further improvement of the present invention, a guide plate is arranged in the frame below the bearing plate, a clearance opening for the driving shaft to pass through is arranged at the center of the guide plate, the bearing plate includes a mounting frame and a turntable, the mounting frame includes a rotating plate and a plurality of supporting rods, and the driving shaft is coaxially fixed with the rotating plate;

[0015] One end of the plurality of support rods in the length direction is respectively fixed to the edge of the rotating disk, and the other end of the support rods extends in a direction away from the driving shaft, the bottom surface of the rotating disk is in contact with the upper surfaces of the plurality of support rods, and a hollow portion is formed in the center of the rotating disk, and the annular inner wall of the hollow portion is in contact with the annular edge of the rotating disk;

[0016] The rotating disk is provided with a through hole at the gap between two adjacent supporting rods, and the electrolyte passes through the rotating disk through the through hole and is collected in the guide disk.

[0017] As a further improvement of the present invention, the upper surface of the guide plate forms an annular guide groove around the clearance port, the bottom of the guide groove forms a conical drainage surface around the clearance port, and the guide plate is equipped with a plurality of guide pipes connected to the guide groove;

[0018] A liquid collecting box is arranged inside the frame below the drainage plate, and the electrolyte falls into the drainage groove and is guided into the liquid collecting box through the drainage surface and the drainage pipe.

[0019] As a further improvement of the present invention, the second electrode comprises an electrolytic rod and a liquid guide, the electrolytic rod is hollow inside and forms the liquid outlet at the bottom;

[0020] A liquid guiding cavity is formed in the liquid guiding member, the liquid inlet is formed at the top of the liquid guiding member and is connected to the liquid guiding cavity, the liquid guiding member is connected to an end of the electrolytic rod away from the liquid outlet, the diameter of the end of the liquid guiding cavity connected to the electrolytic rod is smaller than the diameter of the liquid inlet, and the electrolyte enters the liquid guiding cavity through the liquid inlet and is filled into the workpiece through the liquid outlet.

[0021] As a further improvement of the present invention, the lifting device includes a lifting frame and a lifting seat, the lifting seat is vertically fixed to the upper surface of the rotary disk, and the lifting frame drives the electrolytic rod to slide relative to the height direction of the lifting seat so that the liquid outlet of the electrolytic rod extends into the opening of the workpiece;

[0022] The lifting frame comprises a lifting plate and a frame body, wherein the lifting plate is slidably matched with the lifting seat, the frame body is vertically fixed to a side of the lifting plate away from the lifting seat, and the electrolytic rod is vertically passed through and fixed in the frame body.

[0023] As a further improvement of the present invention, the driving mechanism includes a driving cylinder, a lifting plate and a flipping member, wherein the driving cylinder is mounted on the top surface of the frame, the driving end of the driving cylinder is vertically downwardly connected to the lifting plate, and the bottom end of the lifting plate is rotatably connected to the flipping member;

[0024] A force-bearing member supported by the flip member is assembled on the side of the lifting plate away from the second electrode, and the driving end of the driving cylinder drives the flip member to move downward to a state of being out of contact with the force-bearing member, and the frame and the lifting plate move downward along the height direction of the lifting seat to the opening of the liquid outlet of the electrolytic rod extending into the workpiece.

[0025] As a further improvement of the present invention, the first conveying mechanism and the second conveying mechanism perform cyclic reciprocating motion in a straight line, the first conveying mechanism and the second conveying mechanism are equipped with a workpiece fixture, and the opening of the workpiece is downwardly clamped in the workpiece fixture;

[0026] The workpiece fixture is assembled at the first conveying mechanism or the second conveying mechanism through a base. The pre-cleaning tank and the re-cleaning tank are provided with a plurality of spray pipes along the length direction. The base is provided with a flushing hole along the axial direction. The spray pipes spray cleaning liquid from the flushing hole into the opening of the workpiece to clean the inside of the workpiece.

[0027] As a further improvement of the present invention, the first cleaning line has three pre-cleaning tanks, which are respectively a first acid spray tank, a second acid spray tank and a first spray water washing tank arranged in sequence along the length direction, and the first acid spray tank is set as a sandblasting station on the side away from the second acid spray tank;

[0028] The second cleaning line has two pre-cleaning tanks, which include a second spray water washing tank and an ultrasonic cleaning tank arranged along the length direction. The ultrasonic cleaning tank is set as a drying station on the side away from the spray water washing tank.

[0029] Compared with the prior art, the beneficial effect of the present invention is that after the workpiece is cleaned by the first cleaning line, it is transferred to the first electrode at the loading point of the holding tray of the circularly moving electrolytic polishing equipment with the opening facing upward, and the electrolyte is filled into the opening of the workpiece through the second electrode and then powered on, and then the driving shaft of the holding tray drives the holding tray to rotate once, and a first electrode distributed on its surface rotates to the loading point once to receive the workpiece transferred from the first cleaning line. After the workpiece rotates multiple times with the holding tray, the first electrode below it rotates to the unloading point, and at this time, the inside of the workpiece has undergone sufficient electrolysis time, achieving a good electrolysis effect, and the workpiece is transferred to the second cleaning line to remove the pollutants generated by the electrolytic polishing on the inner surface of the workpiece. Since the workpiece is placed on the supporting tray with the opening facing upward, the second electrode can inject electrolyte into the interior of the workpiece. The required amount of electrolyte is the volume of the workpiece itself. Compared with the prior art, there is no need to use an electrolytic cell to hold electrolyte far more than required for electrolysis, and there is no need to seal the opening of the workpiece. That is, omitting the seal can effectively extend the service life of the equipment, thereby effectively reducing the cost of electrolytic polishing.

[0030] Secondly, the first conveying mechanism and the second conveying mechanism of the first cleaning line and the second cleaning line are respectively equipped with workpiece fixtures with flushing holes, and the workpiece is clamped in the workpiece fixture with the opening facing downward. When the first conveying mechanism and the second conveying mechanism drive the workpiece fixture and the workpiece to be cleaned by the pre-cleaning tank and the re-cleaning tank, the cleaning liquid sprayed by the spray pipes arranged in the pre-cleaning tank and the re-cleaning tank is sprayed through the flushing holes to the inside of the workpiece clamped in the workpiece fixture with the opening facing downward. Compared with the prior art of cleaning the inside of the workpiece only by immersion, the flushing action effectively improves the removal of chemical pollutants remaining inside the workpiece or pollutants generated by electrolytic polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a top view of the first cleaning line, the electrolytic polishing equipment and the second cleaning line arrangement structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the specific structure of the electrolytic polishing equipment used in the present invention;

[0033] Figure 3 It is a structural schematic diagram for reflecting the state of the second electrode entering the opening of the workpiece in the present invention;

[0034] Figure 4 It is a structural schematic diagram of the lifting device used to reflect the second electrode extending into the opening of the workpiece in the present invention;

[0035] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0036] Figure 6 It is a top view for reflecting the specific structure of the support tray in the present invention;

[0037] Figure 7 It is a schematic diagram of a specific structure of the mounting frame used in the present invention;

[0038] Figure 8 It is a schematic diagram of a specific structure of a turntable in the present invention;

[0039] Fig. 9 It is a cross-sectional view used to reflect the specific structure of the guide plate in the present invention;

[0040] Fig.10 It is a partial schematic diagram for reflecting the specific structure of the guide groove in the present invention;

[0041] Fig.11 It is a schematic diagram of a specific structure for embodying the second cleaning line in the present invention;

[0042] Fig.12It is a structural schematic diagram of the coordination relationship between the workpiece fixture, the second conveying structure and the spraying pipeline in the present invention;

[0043] Fig.13 It is a schematic diagram of a specific structure of a workpiece fixture in the present invention;

[0044] Fig.14 It is a top view used to reflect that the first cleaning line and the second cleaning line are arranged perpendicular to each other in the present invention. DETAILED DESCRIPTION

[0045] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0046] Ginseng Figures 1 to 13 As shown, an electrolytic polishing production line disclosed by the present invention is shown. Compared with the prior art, after the workpiece 3 is cleaned by the first cleaning line 70, it is transferred to the first electrode 11 at the loading point of the circularly moving electrolytic polishing device 10 with the opening 32 facing upward. The electrolyte is filled into the opening 32 of the workpiece 3 through the second electrode 2 and then energized. Then, the driving shaft 54 ​​of the tray 1 drives the tray 1 to rotate once, and a first electrode 11 distributed on its surface rotates to the loading point once to receive the workpiece 3 transferred from the first cleaning line 70. After the workpiece 3 rotates multiple times with the tray 1, the first electrode 11 below it rotates to the unloading point. At this time, the inside of the workpiece 3 has undergone sufficient electrolysis time, achieving a good electrolytic polishing effect, and the workpiece 3 is transferred to the second cleaning line 80 to remove the pollutants generated by the electrolytic polishing on the inner surface of the workpiece 3. Since the workpiece 3 is placed on the supporting tray 1 with the opening 32 facing upward, the second electrode 2 can inject electrolyte into the workpiece 3. The required amount of electrolyte is the volume of the workpiece 3 itself. Compared with the prior art, there is no need to use an electrolytic cell to hold electrolyte far more than required for electrolysis, and there is no need to seal the opening of the workpiece. That is, omitting the seal can effectively extend the service life of the equipment, thereby effectively reducing the cost of electrolytic polishing.

[0047] Ginseng Figures 1 to 13 As shown, the electrolytic polishing production line in this embodiment includes: a first cleaning line 70, an electrolytic polishing device 10 and a second cleaning line 80, and the length direction of the second cleaning line 80 and the first cleaning line 70 are parallel or perpendicular to each other (see Fig.14As shown); the electrolytic polishing equipment 10 includes: a tray 1 and a driving shaft 54 ​​coaxially fixed with the tray 1, a plurality of first electrodes 11 are evenly distributed on the upper surface of the tray 1 around the driving shaft 54, the first cleaning line 70 transfers the workpiece 3 to the tray 1 from the loading point (see the following description) and the bottom 31 of the workpiece 3 is in contact with the first electrode 11; the tray 1 is provided with a group of second electrodes 2 corresponding to each first electrode 11, the second electrode 2 is hollow inside and the top and bottom ends are provided with a liquid inlet 21 and a liquid outlet 22, and one end of the second electrode 2 forming the liquid outlet 22 extends into the opening 32 of the workpiece 3 to inject electrolyte into the workpiece 3; the driving shaft 54 ​​drives the tray 1 to rotate in a circle to drive the workpiece 3 to rotate to the unloading point (see the following description), and transfers the workpiece 3 from the unloading point to the second cleaning line 80, and the second cleaning line 80 drives the workpiece 3 to move in a direction away from the electrolytic polishing equipment 10.

[0048] Ginseng Figure 1 As shown, a transfer device 74 is provided between the first cleaning line 70 and the second cleaning line 80. The transfer device transfers the workpiece 3 from the first cleaning line 70 to the first electrode 11 at the loading point where the tray 1 rotates, and the transfer device 74 transfers the workpiece 3 from the tray 1 to the first electrode 11 at the unloading point to the second cleaning line 80. Specifically, the transfer device 74 is selected as a manipulator. The first cleaning line 70 removes chemical pollutants from the workpiece 3 while driving the workpiece 3 to move toward the electrolytic polishing device 10. When the first cleaning line 70 drives the workpiece 3 to move to a position close to the electrolytic polishing device 10, the workpiece 3 is transferred to the first electrode 11 of the tray 1 at the loading point through the transfer device 74. At this time, the opening 32 of the workpiece 3 is upward and the bottom 31 of the workpiece 3 is in contact with the first electrode 11. At this time, the second electrode 2 extends into the opening 32 of the workpiece 3 and fills the electrolyte into the workpiece 3 through the liquid outlet 22 and then moves out of the opening 32 of the workpiece 3. The driving shaft 54 ​​drives the support tray 1 to rotate so that the first electrode 11 rotates to the unloading point, and then the workpiece 3 is transferred to the second cleaning line 80 through the transfer device 74. It should be noted that in this embodiment, the length directions of the first cleaning line 70 and the second cleaning line 80 are parallel to each other.

[0049] Ginseng Figures 2 to 4 As shown, the electrolytic polishing equipment 10 also includes: a frame 5, each set of second electrodes 2 is connected to the upper surface of the tray 1 through a set of lifting devices 4, the frame 5 is located above the tray 1 and a driving mechanism 6 is arranged, and the loading point and the unloading point are at the same position and are located directly below the driving mechanism 6 (see Figure 3 and Figure 6As shown in position C), the driving mechanism 6 drives the lifting device 4 located directly below to drive the second electrode 2 to move in a direction away from the first electrode 11. Specifically, the second electrode 2 includes an electrolytic rod 23 and a liquid guide 24. The interior of the electrolytic rod 23 is hollow and forms a liquid outlet 22 at the bottom; a liquid guide cavity 241 is formed in the liquid guide 24, and a liquid inlet 21 is formed at the top of the liquid guide 24 and communicates with the liquid guide cavity 241. The liquid guide 24 is connected to one end of the electrolytic rod 23 away from the liquid outlet 22. The diameter of the end of the liquid guide cavity 241 that communicates with the electrolytic rod 23 is smaller than the diameter of the liquid inlet 21. After the electrolyte enters the liquid guide cavity 241 through the liquid inlet 21, it fills the interior of the workpiece 3 from the liquid outlet 22. By designing the structure of the second electrode 2, the bottom 31 of the workpiece 3 is placed at the first electrode 11 on the surface of the tray 1, and then the second electrode 2 is extended into the workpiece 3 from the opening of the workpiece 3, and the electrolyte is injected from the liquid inlet 21 of the second electrode 2, and the electrolyte is injected into the workpiece 3 after passing through the liquid outlet 22. The electrolyte is injected into the workpiece 3 placed forward, and the sealing member can be omitted, and the bubbles generated in the electrolyte are discharged together with the electrolyte overflowing from the opening 32 of the workpiece 3; and in the present application, since the electrolyte is poured into the workpiece 3 from top to bottom, the electrolyte is poured into the workpiece 3. During the process, the momentum and impulse carried by the electrolyte itself can effectively flush, squeeze and break the bubbles that may be formed on the inner wall surface of the workpiece 3 due to the liquid tension of the electrolyte itself, so that the present application can reduce the amount of electrolyte used while further avoiding the undesirable situation of bubbles forming on the inner wall surface of the workpiece 3 after the workpiece 3 is filled with electrolyte, further improving the electrolytic polishing effect of the slotless electrolytic polishing equipment shown in the present application, thereby effectively avoiding the appearance of spots or dirt on the inner wall surface of the workpiece 3 after electrolytic polishing due to the adhesion of bubbles. Furthermore, the second electrode 2 not only has a conductive effect but also serves as a flow guiding device for injecting electrolyte into the workpiece 3. That is, in the present embodiment, the liquid guiding member 24 is arranged in the shape of a funnel, which has a liquid guiding cavity 241 which is wide at the top and narrow at the bottom. When the electrolyte is injected from the liquid inlet 21, it can play an effective guiding effect to avoid overflow of the electrolyte, thereby achieving the effect of filling the interior of the workpiece 3 with an appropriate amount of electrolyte, thereby achieving the purpose of achieving a better electrolysis effect on the interior of the workpiece 3 through a simpler structure without the need for an electrolytic cell.

[0050] In this embodiment, a driving shaft 54 ​​is provided in the center of the support tray 1, and the driving shaft 54 ​​drives the support tray 1 to move in a circular motion, and a plurality of first electrodes 11 are evenly distributed on the support tray 1. Each time the driving shaft 54 ​​drives the support tray 1 to rotate once, a first electrode 11 on the surface of the support tray 1 rotates once to the position directly below the driving mechanism 6 (i.e., the position C where the loading point and the unloading point are located at the same time in this embodiment). It should be noted that, in this embodiment, a total of 36 first electrodes 11 are provided around the driving shaft 54 ​​on the upper surface of the support tray 1, so that each time the driving shaft 54 ​​drives the driving shaft 54 ​​to rotate 10°, a first electrode 11 on the upper surface of the support tray 1 is located at the position C directly below the driving mechanism 6. At this time, the first electrode 11 located at the position C is driven by the driving mechanism 6 to rise in a direction away from the first electrode 11 corresponding to the second electrode 2. Specifically, the lifting device equipped with the second electrode 2 of the group is driven by the driving mechanism 6 to rise, so that there is enough space between the second electrode 2 and the first electrode 11 for the placement of the workpiece 3 (for specific conditions, refer to Figure 2 As shown). The workpiece 3 transferred from the first cleaning line 70 is placed above the first electrode 11 with the opening 32 facing upward through the transfer device 74, and the bottom 31 of the workpiece 3 is in contact with the first electrode 11. At this time, the driving mechanism 6 drives the lifting device 4 to drive the second electrode 2 to move down to the liquid outlet 22 and extend into the opening 32 of the workpiece 3 to fill the interior of the workpiece 3 with electrolyte. Then, each time the tray 1 rotates with the driving shaft 54, the first electrode 2 evenly distributed on its surface rotates to the bottom of the driving mechanism 6 once to facilitate the placement and placement of the workpiece 3 and the injection of electrolyte. The specific action process is consistent with the above and will not be repeated here. Until the workpiece 3 rotates with the tray 1 for one circle and then rotates again to the position C directly below the driving mechanism 6 (i.e., the unloading point recorded above), the interior of the workpiece has undergone sufficient electrolysis time, and a good electrolytic polishing effect has been achieved. The workpiece can be removed at position C and transferred to the second cleaning line 80 by the transfer device 74, and then a new workpiece to be electrolyzed is placed at position C and the above action is repeated, and the electrolytic polishing of the inside of the workpiece 3 is completed after it rotates one circle. It should be noted that although the loading point and the unloading point of the electrolytic polishing equipment 10 in this embodiment coincide at the same position, two driving mechanisms 6 (not shown) can be connected to the frame 5 respectively according to actual needs, and the positions below the two driving mechanisms 6 are designated as the loading point and the unloading point. If the angle between the connecting line of the two driving mechanisms 6 and the center of the turntable 15 is 270°, after the workpiece 3 is placed on the first electrode 11 located at the loading point, the first electrode 11 is located at the unloading point after rotating 270°, and the driving mechanism 6 drives the second electrode 2 to rise or fall in a manner consistent with the above, which will not be repeated here.

[0051] Ginseng Figures 2 to 4As shown, the lifting device 4 includes a lifting frame 41 and a lifting seat 42. The lifting seat 42 is vertically fixed to the upper surface of the rotating disk 141. The lifting frame 141 drives the electrolytic rod 2 to slide relative to the height direction of the lifting seat 42 so that the liquid outlet 22 of the electrolytic rod 23 extends into the opening 32 of the workpiece 3. The lifting frame 41 includes a lifting plate 413 and a frame body 414. The lifting plate 413 slides with the lifting seat 42. The frame body 414 is vertically fixed to the side of the lifting plate 413 away from the lifting seat 42. The electrolytic rod 23 is vertically inserted and fixed in the frame body 414. It should be noted that the lifting seat 42 includes a mounting plate 421 and a support plate 422, wherein the mounting plate 421 is vertically assembled on the upper surface of the support tray 1, and the support plate 422 is a right-angled triangular plate body, and the two right-angled sides of the support plate 422 are respectively in contact with the side wall of the support plate 422 and the upper surface of the support tray 1. A guide rail 423 is provided along the height direction on the side of the mounting plate 421 away from the support plate 422 , and the lifting plate 413 is slidably matched with the guide rail 423 via a guide block (not marked). The frame 414 is vertically assembled on the side of the lifting plate 413 away from the mounting plate 421 , and the first electrode 2 is mounted via the assembly part 415 .

[0052] Ginseng Figure 4 and Figure 5 As shown, the frame 414 has an installation opening (not marked) for the assembly part 415 to pass through. The assembly part 415 includes: an electrode fixing part 4151, an insulating sleeve 4152, a locking nut 4153 and a clamping part 4154. The electrolytic rod 23 constituting the first electrode 2 passes through the electrode fixing part 4151 in the axial direction. The insulating sleeve 4152 is assembled on the outside of the electrode fixing part 4151. The protrusion (not marked) of the electrode fixing part 4151 is fitted with the bottom end of the insulating sleeve 4152. The top of the insulating sleeve 4152 has a protrusion (not marked). The outer wall of the insulating sleeve 4152 is fitted with the inner wall of the installation opening (not marked). The lower surface of the protrusion (not marked) of the insulating sleeve 4152 is fitted with the upper surface of the frame 414. The locking nut 4153 is assembled on the top of the electrode fixing part 4151 and abuts against the upper surface of the insulating sleeve 4152. The clamping part 4154 is as shown in FIG. Figure 5 and Figure 6 As shown, the electrode fixing member 4151 is assembled at the bottom end thereof, thereby achieving the purpose of stably assembling the electrolytic rod 23 on the frame 414. Further, the electrode fixing member 4151 also has a conductive function, and the power source 53 (see Figure 2 and Figure 3 As shown in FIG. 4 , the second electrode 2 is electrically connected to the electrode fixing member 4151 to supply power to the second electrode 2 as a whole. It should be noted that in this embodiment, the second electrode 2 is a cathode, the first electrode 11 is an anode, and the electrolyte is a mixed acid solution, preferably a mixture of dilute hydrochloric acid and dilute sulfuric acid.

[0053] Ginseng Figures 1 to 4As shown, the driving mechanism 6 includes a driving cylinder 61, a lifting plate 62 and a flipping member 63. The driving cylinder 61 is mounted on the top surface of the frame 5. The driving end of the driving cylinder 61 is vertically connected to the lifting plate 62 downward, and the bottom end of the lifting plate 62 is rotatably connected to the flipping member 63. The lifting plate 413 is equipped with a force-bearing member 411 supported by the flipping member 63 on the side away from the second electrode 2. The driving end of the driving cylinder 61 drives the flipping member 63 to move downward to a state of being out of contact with the force-bearing member 411. The frame 41 and the lifting plate 413 move downward along the height direction of the lifting seat 42 to the opening 32 where the liquid outlet 22 of the electrolytic rod 23 extends into the workpiece 3. It should be noted that in this embodiment, the flipping member 63 is set as a plate-like member with a certain length and thickness, and the flipping member 63 is rotatably connected to the lifting plate 62 through a connecting shaft (not marked), and the bottom surface of the flipping member 63 and the connection with the side away from the connecting shaft form a wedge-shaped surface 631. Furthermore, the turntable 15 is provided with two positioning seats 16 around each first electrode 11, and a workpiece 3 is inserted into each of the two positioning seats 16. The positioning seats 16 are provided as a basket made of a certain elastic material (such as plastic, rubber, etc.) to achieve the purpose of positioning the workpiece 3. Specifically, the second electrode 2 is provided with two electrolytic rods 23 and a liquid guide 24 corresponding to the two workpieces placed on each first electrode 11. The workpiece 3 is placed in the positioning seat 16 at position C, and the driving end of the driving cylinder 61 is extended; when the liquid outlet 22 of the first electrode 2 is located in the opening 32 of the workpiece 3 (the specific state is as follows Figure 3 and Figure 4 As shown in the figure, at this time, the driving end of the driving cylinder 61 is in a fully extended state, and the lifting plate 62 connected to the driving end of the driving cylinder 61 through the connecting piece 611 drives the flip member 63 to move to the lowest point. At this time, the flip member 63 and the force-bearing member 411 are in a mutually separated state. At this time, the lifting frame 41 is subjected to the gravity as a whole, and the guide block 4121 assembled on the lifting plate 413 slides downward along the guide rail 423 of the mounting plate 421 until the positioning member 412 assembled on the lifting plate 413 abuts against the upper edge of the guide rail 423. Since the flip member 63 is completely separated from the force-bearing member 411, it can be known that at this time, there is no contact between the driving mechanism 6 and the lifting device 4, and the electrolyte is injected into the liquid inlet 21 of the first electrode 2 until the inside of the workpiece 3 is filled. At this time, the driving shaft 54 ​​is rotated again to the position C where the positioning seat 16 of the next station is located directly below the driving mechanism 6.

[0054] Ginseng Figures 6 to 10As shown, a guide plate 13 is arranged below the support plate 1 in the frame 5, and a clearance opening 131 for the driving shaft 54 ​​to pass through is provided at the center of the guide plate 13. The support plate 1 includes a mounting frame 14 and a turntable 15. The mounting frame 14 includes a turntable 141 and a plurality of supporting rods 142, and the driving shaft 54 ​​is coaxially fixed with the turntable; one end of the plurality of supporting rods 142 in the length direction is respectively fixed at the edge of the turntable 141, and the other end of the supporting rods 142 extends in a direction away from the driving shaft 54, and the bottom surface of the turntable 15 is fitted with the upper surfaces of the plurality of supporting rods 142, and a hollow portion 152 is formed in the center of the turntable 15, and the annular inner wall of the hollow portion 152 is fitted with the annular edge of the turntable 141; a through hole 151 is provided in the turntable 15 at the gap between two adjacent supporting rods 142, and the electrolyte passes through the turntable 15 through the through hole 151 and is collected in the guide plate 13. It should be noted that, in this embodiment, a plurality of first electrodes 11 are distributed on the upper surface of the turntable 15, and the lifting seat 42 (specifically including a support plate 422 and a mounting plate 421) of the lifting device 4 is mounted on the upper surface of the turntable 141 and is arranged opposite to the first electrode 11. Therefore, when the driving shaft 54 ​​is started, the lifting seat 42 and the first electrode 11 arranged opposite thereto rotate synchronously, thereby enabling the lifting frame 41 slidably mounted on the lifting seat 42 and the second electrode 2 mounted on the lifting frame 41 to rotate together with the supporting tray 1 as a whole. When the lifting frame 41 drives the liquid outlet 22 of the second electrode 2 as a whole to extend into the opening 32 of the workpiece 3 and fill the workpiece 3 with electrolyte, the driving shaft 54 ​​drives the turntable 141 to rotate, that is, drives the workpiece 3 and the second electrode 2 extending therein to rotate as a whole. During the rotation process, the first electrode 11 and the second electrode 2 are energized to keep the electrolytic reaction going. The electrolyte spilled onto the surface of the turntable 15 passes through the through hole 151 opened on the turntable 15, and because the through hole 151 is set in the gap between two adjacent support rods 142, the electrolyte can directly fall into the guide plate 13 after passing through the through hole 151 without being interfered by the support rod 142, which is beneficial to the recovery of the electrolyte while avoiding corrosion of the support rod 142 by the electrolyte.

[0055] Ginseng Fig. 9 and Fig.10As shown, the upper surface of the guide plate 13 forms an annular guide groove 133 around the clearance opening 131, and the bottom of the guide groove 133 forms a conical drainage surface 1331 around the clearance opening 131. The bottom wall of the guide plate 13 is equipped with a plurality of guide pipes 132, and the top of the guide pipe 132 is connected to the lowest position of the drainage surface 1331; the frame 5 is provided with a liquid collecting box 52 below the drainage plate 13, and the electrolyte falls into the guide groove 133 and is guided into the liquid collecting box 52 through the drainage surface 1331 and the guide pipe 132. It should be noted that the bottom end of the drive shaft 54 ​​is connected to the motor (not marked), and the top end of the drive shaft 54 ​​passes through the clearance opening 131 and is connected to the rotary plate 141. In the present embodiment, an annular guide groove 133 is provided on the upper surface of the guide plate 13 to temporarily store the electrolyte that has fallen into the guide plate 13. The guide groove 133 is designed so that both sides close to and away from the clearance port 131 are groove walls of a certain height to prevent the electrolyte that has fallen into the guide plate 13 from flowing uncontrollably to other areas of the rack 5. Instead, the electrolyte is guided by the guide surface 1331 and is guided by the guide pipe 132 to the liquid collecting tank 52 to collect the electrolyte. Preferably, the liquid outlet pipe 132 is connected to the liquid collecting tank 52 through a hose or a pipe. It should be noted that in the present embodiment, the height of the side of the guide surface 1331 away from the clearance port 131 is lower. An electrolyte cooling pipe 521 (see Figure 3 As shown), the electrolyte in the liquid collecting tank 52 is cooled by introducing low-temperature liquid into the electrolyte cooling pipe 521. In this embodiment, by means of the guide plate 13 disposed below the tray 1, when the electrolyte overflowing from the opening 32 of the workpiece 3 flows to the upper surface of the tray 1, the electrolyte falls into the guide plate 13 through the through hole 151, so as to achieve the effect of omitting the electrolytic cell while avoiding the overflowing electrolyte from polluting the production space. In addition, in this embodiment, the guide plate 13 only has the effect of collecting and directing the overflowing electrolyte, and does not need to have the function of soaking the workpiece 3 or supplying liquid, and only needs to have a smaller depth and volume. Furthermore, an industrial chiller 55 is also provided below the guide plate 131 in the frame 1, and a liquid outlet pipe 132 of the guide plate 131 is connected to the liquid inlet (not shown) of the industrial chiller 55 through a hose or other means.

[0056] Ginseng Figure 1 as well as Figures 11 to 13As shown, the first cleaning line 70 includes a first conveying mechanism 72 and at least one pre-cleaning tank 71. The first conveying mechanism 72 drives the workpiece 3 in the pre-cleaning tank 71 to remove the existing chemical pollutants. The second cleaning line 80 includes a second conveying mechanism 82 and at least one re-cleaning tank 81. The second conveying mechanism 82 drives the workpiece 3 in the re-cleaning tank 81 to remove the existing electrolytic polishing pollutants. The first conveying mechanism 72 and the second conveying mechanism 82 perform cyclic reciprocating motion in a straight line. The first conveying mechanism 72 and the second conveying mechanism 82 are equipped with a workpiece fixture 90. The opening 32 of the workpiece 3 is clamped downward in the workpiece fixture 90. The workpiece fixture 90 is mounted on the first conveying mechanism 72 or the second conveying mechanism 82 through a base assembly 91. The pre-cleaning tank 71 and the re-cleaning tank 81 are provided with a plurality of spray pipes 84 along the length direction. The base 91 is provided with a flushing hole 911 along the axial direction. The spray pipe 84 sprays the cleaning liquid from the flushing hole 911 into the opening 32 of the workpiece 3 to clean the inside of the workpiece 3. The workpiece fixture 90 also has a plurality of clamping rods 92. The workpiece 3 is buckled on the base 91 with the opening 32 facing downward, and the clamping rods 92 clamp and position the outer wall of the workpiece 3. Fig.12 As shown, the spray cleaning pipeline 84 includes a nozzle 841, a spray pipe 842, a connecting pipe 843 and a liquid inlet pipe 844. The liquid inlet pipe 844 passes through the side wall of the pre-cleaning tank 71 or the re-cleaning tank 81 in the length direction and is connected to the connecting pipe 843. The spray pipes 842 are arranged in multiple groups and are vertically arranged on the side of the connecting pipe 843 away from the liquid inlet pipe 844. The top of the spray pipe 842 has multiple nozzles 841. After the cleaning liquid is introduced from the liquid inlet pipe 844, it enters into several spray pipes 842 from the connecting pipe 843, and then is sprayed out from the nozzle 841 and sprayed into the interior of the workpiece 3 through the flushing hole 911 opened in the base 91 to flush the interior of the workpiece 3, thereby achieving a better pollutant removal effect on the interior of the workpiece 3.

[0057] Ginseng Figure 1 and Fig.11As shown, the first cleaning line 70 has three pre-cleaning tanks 71, which are respectively a first acid spray tank 711, a second acid spray tank 712 and a first spray water washing tank 713 arranged in sequence along the length direction, and the first acid spray tank 711 is set as a sandblasting station 76 on the side away from the second acid spray tank 712; the second cleaning line 80 has two re-cleaning tanks 81, which include a second spray water washing tank 811 and an ultrasonic cleaning tank 812 arranged along the length direction, and the ultrasonic cleaning tank 812 is set as a drying station 83 on the side away from the spray water washing tank 811. It should be noted that the first conveying mechanism 72 and the second conveying mechanism 82 are both composed of a plurality of driving gears 821 and chains 822 wound around the driving gears 821. The chain 822 is provided with a bottom plate (not marked) perpendicular to the length direction. The base 91 of the workpiece fixture 90 is assembled on the bottom plate (not marked). In this embodiment, a total of four groups of work fixtures 90 are provided along the width direction of the first conveying mechanism 72 or the second conveying mechanism 82. The arrangement of the plurality of driving gears 821 determines the direction of the chain 822 and thus changes the axial direction of the workpiece 3. In this embodiment, the workpiece 3 in the first acid spray tank 711, the second acid spray tank 712, the first spray water washing tank 713 and the second spray water washing tank 811 are all moved in a manner that the axial direction is perpendicular to the length direction. The workpiece 3 is moved in the ultrasonic cleaning tank 812 in the manner as follows: Fig.11 and Fig.13 The method shown is to first slowly sink into the liquid surface and then slowly rise from the liquid surface.

[0058] Specifically, in this embodiment, the spray pipes 84 in the first acid spray tank 711 and the second acid spray tank 712 are as follows: Fig.12 There are six spray pipes 842 in total, each of which has four nozzles 841 along the length direction; the spray pipe 84 in the first spray water washing tank 713 and the second spray water washing tank 811 has two spray pipes 842, each of which has four nozzles 841 along the length direction. The spray pipe 84 in the ultrasonic cleaning tank 812 plays an auxiliary role, and has no less than three spray pipes 842, each of which also has four nozzles 841. When the first conveying mechanism 71 drives the workpieces 3 to pass through the first acid spray tank 711 and the second acid spray tank 712 in sequence, the four nozzles 841 of each nozzle 842 simultaneously spray acid spray liquid into the four workpieces 3. After the inside of the workpieces 3 passes through the different acid spray liquids sprayed by the six nozzles 842 in the first acid spray tank 711 and the six nozzles 842 in the second acid spray tank 712 in sequence, the chemical pollutants remaining in the workpieces 3 are sprayed and removed. After the workpieces 3 are cleaned by the cleaning liquid (clean water) sprayed by the two nozzles 842 in the first spray water washing tank 713, they are transferred to the electrolytic polishing equipment 10 through the transfer device 74.

[0059] After the workpiece 3 is polished by the electrolytic polishing device 10, the transfer device 74 removes it from the electrolytic polishing device 10, and pours the electrolyte contained in the workpiece 3 into the electrolyte recovery tank 85 provided between the electrolytic polishing device 10 and the second cleaning line 80. The transfer device 74 keeps the workpiece 3 in an inverted state and places it in the working fixture 90 assembled by the second conveying mechanism 72. Then the second conveying mechanism 72 drives the workpiece 3 to move to the second spray water washing tank 811. After the cleaning liquid (clean water) sprayed by the two nozzles 842 of the second spray water washing tank 811 washes away the residual electrolyte inside the workpiece 3, the workpiece 3 moves to the ultrasonic cleaning tank 812 to remove the electrolytic pollutants generated in the workpiece by ultrasonic cleaning. At the same time, the multiple nozzles 842 in the ultrasonic cleaning tank 812 simultaneously spray cleaning liquid into the workpiece 3 through the nozzle 841 to further improve the cleaning effect of the inside of the workpiece 3.

[0060] It should be noted that Figure 1 As shown, the electrolytic polishing production line also has a transfer robot 73. After the workpiece 3 is sandblasted by the sandblasting station 76, the transfer robot 73 transfers the workpiece 3 to the workpiece fixture 90 of the first conveying mechanism 72 for the aforementioned cleaning process. Furthermore, the drying station 83 has a plurality of drying and heating pipes 831. After the workpiece 3 is cleaned by the ultrasonic cleaning tank 812, the second conveying mechanism 82 drives the workpiece 3 to maintain the state where the opening 32 is facing downward, and the workpiece 3 is dried and heated by the plurality of drying and heating pipes 831 of the drying station 83 to evaporate the internal moisture to a dry state, completing the entire electrolytic polishing production process. In this embodiment, the electrolytic polishing equipment 10 adopts a rotary motion mode, so that the first cleaning line 70 and the second cleaning line 80 can be arranged in parallel on the same side of the electrolytic polishing equipment 10, and the first cleaning line 70 and the second cleaning line 80 are designed to move in opposite directions. Compared with the electrolytic polishing production line in the prior art, the length of the production line is significantly shortened by 1 / 2, thereby achieving the effect of reducing the occupation of the working space; or, the first cleaning line 70 and the second cleaning line 80 are distributed in a mutually perpendicular manner (see Fig.14 As shown), compared with the prior art, it can still shorten the overall length of the electrolytic polishing production line.

[0061] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electrolytic polishing production line, characterized in that: include: A first cleaning line, an electrolytic polishing device, and a second cleaning line, wherein the length directions of the second cleaning line and the first cleaning line are parallel or perpendicular to each other; The electrolytic polishing equipment comprises: a support tray and a driving shaft coaxially fixed to the support tray, a plurality of first electrodes are evenly distributed on the upper surface of the support tray around the driving shaft, the first cleaning line transfers the workpiece from the loading point to the support tray and the bottom of the workpiece is in contact with the first electrode; The tray is provided with a group of second electrodes corresponding to each first electrode, the second electrodes are hollow inside and the top and bottom ends are provided with a liquid inlet and a liquid outlet, and one end of the second electrode forming the liquid outlet extends into the opening of the workpiece to inject electrolyte into the workpiece; The driving shaft drives the support tray to rotate in a circular motion to drive the workpiece to rotate to a discharge point, and the workpiece is transferred from the discharge point to a second cleaning line, and the second cleaning line drives the workpiece to move in a direction away from the electrolytic polishing equipment.

2. The electrolytic polishing production line according to claim 1, characterized in that: A transfer device is provided between the first cleaning line and the second cleaning line, the transfer device transfers the workpiece from the first cleaning line to the first electrode where the tray rotates to the loading point, and the transfer device transfers the workpiece from the tray rotates to the first electrode where the tray rotates to the unloading point to the second cleaning line; The first cleaning line includes a first conveying mechanism and at least one pre-cleaning tank, wherein the first conveying mechanism drives the workpiece in the pre-cleaning tank to remove existing chemical pollutants; The second cleaning line includes a second conveying mechanism and at least one re-cleaning tank, and the second conveying mechanism drives the workpiece in the re-cleaning tank to remove existing electrolytic polishing contaminants.

3. The electrolytic polishing production line according to claim 2, characterized in that: The electrolytic polishing equipment also includes: a frame, each group of the second electrodes is connected to the upper surface of the tray through a group of lifting devices, the frame is located above the tray and a driving mechanism is arranged, the loading point and the unloading point are at the same position and are located directly below the driving mechanism, and the driving mechanism drives the lifting device located directly below to move the second electrode in a direction away from the first electrode.

4. The electrolytic polishing production line according to claim 3, characterized in that: A guide plate is arranged below the bearing plate in the frame, and a clearance opening for the driving shaft to pass through is arranged at the center of the guide plate. The bearing plate includes a mounting frame and a rotating plate, and the mounting frame includes a rotating plate and a plurality of supporting rods. The driving shaft is coaxially fixed with the rotating plate. One end of the plurality of support rods in the length direction is respectively fixed to the edge of the rotating disk, and the other end of the support rods extends in a direction away from the driving shaft, the bottom surface of the rotating disk is in contact with the upper surfaces of the plurality of support rods, and a hollow portion is formed in the center of the rotating disk, and the annular inner wall of the hollow portion is in contact with the annular edge of the rotating disk; The rotating disk is provided with a through hole at the gap between two adjacent supporting rods, and the electrolyte passes through the rotating disk through the through hole and is collected in the guide disk.

5. The electrolytic polishing production line according to claim 4, characterized in that: The upper surface of the guide plate forms an annular guide groove around the clearance opening, and the guide plate is equipped with a plurality of guide pipes connected to the guide groove; A liquid collecting box is arranged inside the frame below the drainage plate, and the electrolyte falls into the drainage groove and is guided into the liquid collecting box through the drainage surface and the drainage pipe.

6. The rotary electrolytic polishing equipment according to claim 5, characterized in that: The second electrode comprises an electrolytic rod and a liquid guide, wherein the interior of the electrolytic rod is hollow and the liquid outlet is formed at the bottom; A liquid guiding cavity is formed in the liquid guiding member, the liquid inlet is formed at the top of the liquid guiding member and is connected to the liquid guiding cavity, the liquid guiding member is connected to an end of the electrolytic rod away from the liquid outlet, the diameter of the end of the liquid guiding cavity connected to the electrolytic rod is smaller than the diameter of the liquid inlet, and the electrolyte enters the liquid guiding cavity through the liquid inlet and is filled into the workpiece through the liquid outlet.

7. The rotary electrolytic polishing equipment according to claim 6, characterized in that: The lifting device comprises a lifting frame and a lifting seat, wherein the lifting seat is vertically fixed to the upper surface of the rotary disk, and the lifting frame drives the electrolytic rod to slide relative to the lifting seat in the height direction so that the liquid outlet of the electrolytic rod extends into the opening of the workpiece; The lifting frame comprises a lifting plate and a frame body, wherein the lifting plate is slidably matched with the lifting seat, the frame body is vertically fixed to a side of the lifting plate away from the lifting seat, and the electrolytic rod is vertically passed through and fixed in the frame body.

8. The rotary electrolytic polishing equipment according to claim 6, characterized in that: The driving mechanism includes a driving cylinder, a lifting plate and a flipping member, wherein the driving cylinder is mounted on the top surface of the frame, the driving end of the driving cylinder is vertically connected to the lifting plate downward, and the bottom end of the lifting plate is rotatably connected to the flipping member; A force-bearing member supported by the flip member is assembled on the side of the lifting plate away from the second electrode, and the driving end of the driving cylinder drives the flip member to move downward to a state of being out of contact with the force-bearing member, and the frame and the lifting plate move downward along the height direction of the lifting seat to the opening of the liquid outlet of the electrolytic rod extending into the workpiece.

9. The rotary electrolytic polishing equipment according to claim 2, characterized in that: The first conveying mechanism and the second conveying mechanism perform cyclic reciprocating motion in a straight line, and the first conveying mechanism and the second conveying mechanism are equipped with a workpiece clamp, and the opening of the workpiece is clamped downward in the workpiece clamp; The workpiece fixture is assembled at the first conveying mechanism or the second conveying mechanism through a base. The pre-cleaning tank and the re-cleaning tank are provided with a plurality of spray pipes along the length direction. The base is provided with a flushing hole along the axial direction. The spray pipes spray cleaning liquid from the flushing hole into the opening of the workpiece to clean the inside of the workpiece.

10. The rotary electrolytic polishing equipment according to claim 2, characterized in that: The first cleaning line has three pre-cleaning tanks, which are respectively a first acid spray tank, a second acid spray tank and a first spray water washing tank arranged in sequence along the length direction, and the first acid spray tank is set as a sandblasting station on the side away from the second acid spray tank; The second cleaning line has two pre-cleaning tanks, which include a second spray water washing tank and an ultrasonic cleaning tank arranged along the length direction. The ultrasonic cleaning tank is set as a drying station on the side away from the spray water washing tank.

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