Slotless electrolytic polishing equipment

Abstract

The invention provides slotless electrolytic polishing equipment which comprises a rotatable bearing disc and a first electrode, a second electrode is arranged on the upper surface of the bearing disc, and the second electrode is in contact with a workpiece to form a passage; a liquid inlet and a liquid outlet which are communicated with each other are formed in the top end and the bottom end of the first electrode, the liquid outlet extends into an upward opening part of the workpiece, electrolyte is introduced into the first electrode through the liquid inlet and then is filled into the workpiece through the liquid outlet, and the liquid outlet is moved out of the opening part of the workpiece. The device is used for solving the problem that in the prior art, waste is caused due to the fact that the usage amount of electrolyte is large when a workpiece is soaked in an electrolytic bath, the structure and the action process are simple, it is guaranteed that the workpiece can be filled with the electrolyte, and therefore electrolysis flaws on the inner wall face of the workpiece are effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal surface treatment, in particular to a tankless electrolytic polishing device. Background Art

[0002] Electrolytic polishing is a method of finishing the surface of a metal workpiece by passing electricity through an electrolyte for electrolysis. Currently in the field of electrolytic polishing, especially in the stainless steel thermos and cup industry, the container mouth is usually placed upward on a conductive platform of an electrolytic cell, and electrolyte is injected into the electrolytic cell so that the electrolyte enters and exits the container from the container mouth. In the above-mentioned prior art, it is necessary to inject electrolyte with a liquid level higher than the height of the container into the electrolytic cell in order to achieve the purpose of filling the container with electrolyte. Since the electrolyte is toxic and corrosive, a large amount of electrolyte that has undergone electrolytic reaction in the electrolytic cell needs to be treated for environmental protection after the electrolysis process is completed; at the same time, the existing electrolytic polishing requires the use of a large amount of electrolyte, which leads to an increase in production costs.

[0003] The Chinese patent with the announcement number CN106987894B discloses an inverted electrolytic polishing device and electrolytic polishing equipment thereof, which realizes the infiltration and contact degree between the inner wall surface of the workpiece and the electrolyte by inverting the workpiece and injecting the electrolyte upward through a hollow electrolytic rod. Compared with the electrolysis method of immersing the metal workpiece in the electrolytic tank, the above-mentioned prior art reduces the amount of electrolyte used. However, in the above-mentioned prior art, in the process of inverting the metal container into the electrolytic tank and injecting the electrolyte into the metal workpiece through the hollow electrolytic rod, a certain amount of gas exists inside the workpiece, which makes it impossible for the electrolyte to fill the inside of the metal workpiece, thereby causing electrolytic defects in the metal workpiece.

[0004] In view of this, it is necessary to improve the electrolytic polishing device 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 these solutions are described in the background technology section of this application. Summary of the invention

[0005] The purpose of the present invention is to disclose a tankless electrolytic polishing equipment to solve the problem of large amount of electrolyte used and waste in the prior art when immersing the workpiece in an electrolytic tank. The equipment has simple structure and operation process, and ensures that the electrolyte can fill the interior of the workpiece, thereby effectively avoiding the problem of electrolytic defects on the inner wall of the workpiece.

[0006] To achieve the above object, the present invention provides a slotless electrolytic polishing device, comprising: a rotatable tray and a first electrode, a second electrode is disposed on the upper surface of the tray, the second electrode contacts the workpiece and forms a passage;

[0007] The top and bottom ends of the first electrode form a liquid inlet and a liquid outlet that are interconnected. The liquid outlet extends into an opening of the workpiece that is arranged upward. After the electrolyte enters the first electrode through the liquid inlet, it passes through the liquid outlet and fills the interior of the workpiece. The liquid outlet moves out of the opening of the workpiece.

[0008] As a further improvement of the present invention, the first electrode comprises an electrolytic rod and a liquid guide, the electrolytic rod is hollow inside and forms the liquid outlet at the bottom;

[0009] 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 then flows through the liquid outlet to fill the interior of the workpiece.

[0010] As a further improvement of the present invention, it also includes: a lifting device, the lifting device includes a lifting frame and a lifting seat, the lifting seat is vertically fixed to the upper surface of the supporting tray, the lifting frame drives the electrolytic rod to slide in the height direction relative to the lifting seat so that the liquid outlet of the electrolytic rod extends into the opening of the workpiece, and the lifting frame is driven by a driving mechanism to move along the height direction of the lifting seat.

[0011] As a further improvement of the present invention, it also includes: a frame, the tray is arranged in the frame, the frame has a top plate arranged above the tray, the driving mechanism includes a driving cylinder, a lifting plate and a flipping member, the driving cylinder is assembled above the top plate, the driving end of the driving cylinder vertically passes through the top plate downward and is connected to the lifting plate, and the bottom end of the lifting plate is rotatably connected to the flipping member;

[0012] The lifting frame is equipped with a force-bearing member supported by the flip member on the side away from the first electrode. The driving end of the driving cylinder drives the lifting plate and the flip member to descend so that the force-bearing member is out of contact with the flip member. The lifting frame moves down along the height direction of the lifting seat to the opening that extends into the workpiece.

[0013] As a further improvement of the present invention, a driving shaft is axially penetrated through the support plate for driving the support plate to rotate, and a plurality of lifting seats are arranged around the driving shaft on the upper surface of the support plate. The workpiece is placed on the support plate directly below the driving mechanism, and the support plate drives the workpiece to rotate again to directly below the driving mechanism to remove the workpiece from the support plate.

[0014] As a further improvement of the present invention, the support tray is provided with a plurality of through holes for electrolyte to flow through, a liquid collecting box is provided in the frame below the support tray, a guide plate is provided between the liquid collecting box and the support tray, and the electrolyte passes through the through holes, is guided by the guide plate and then flows into the liquid collecting box.

[0015] As a further improvement of the present invention, the support tray includes a mounting frame and a turntable, the mounting frame includes a turntable and a plurality of support rods, the driving shaft is coaxially fixed with the turntable, and the plurality of support rods are evenly distributed near the edge of the turntable;

[0016] The turntable is coaxial with the rotating disk and is arranged in concentric circles, and the bottom surface of the turntable is arranged in contact with the upper surfaces of a plurality of support rods. The second electrodes are evenly distributed on the side of the turntable away from the support rods, and the through holes formed by the supporting tray are opened in the gap between two adjacent support rods of the turntable.

[0017] As a further improvement of the present invention, the guide plate is arranged below the mounting frame and fixedly connected to the frame, and a clearance opening is formed in the center of the guide plate for the drive shaft to pass through. The bottom surface of the guide plate is connected to a plurality of liquid outlet pipes. After the electrolyte flows into the guide plate through the through hole, it is guided into the liquid collecting tank by the liquid outlet pipe.

[0018] As a further improvement of the present invention, the second electrode is evenly distributed on the upper surface of the turntable in sheet form, and a positioning seat is arranged around the second electrode on the turntable. After the workpiece is inserted into the positioning seat, the bottom of the workpiece contacts the second electrode.

[0019] As a further improvement of the present invention, it also includes: an electrolytic power source and a current collecting device, wherein the current collecting device is coaxially assembled on the top end of the driving shaft, and the current collecting device supplies power to the electrolytic power source through a flexible conductive device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] First, the bottom of the workpiece is placed at the second electrode on the surface of the tray, and then the first electrode is extended into the workpiece from the opening of the workpiece, and the electrolyte is injected from the liquid inlet of the first electrode. The electrolyte is injected into the interior of the workpiece after passing through the liquid outlet. Injecting the electrolyte into the workpiece placed forward can effectively avoid the generation of bubbles to ensure the electrolysis effect inside the workpiece. Furthermore, the first electrode has a conductive effect and is used as a guide device for injecting the electrolyte into the workpiece, so that the workpiece can be electrolyzed when an appropriate amount of electrolyte fills the interior of the workpiece, thereby achieving the purpose of achieving a better electrolysis effect on the interior of the workpiece through a simpler structure without the need for an electrolytic cell.

[0022] Secondly, a driving shaft is arranged in the center of the tray, and the driving shaft drives the tray to move in a circular motion, and a number of second electrodes are evenly distributed on the tray. The workpiece is placed on the second electrode directly below the driving mechanism, and then the lifting frame is moved down along the lifting seat to the opening where the electrolytic rod extends into the workpiece to fill the workpiece with electrolyte. Then, each time the tray rotates in the circular motion, the second electrodes evenly distributed on its surface rotate to the directly below the driving mechanism once to facilitate the workpiece to be taken and placed and the electrolyte to be injected, until the workpiece rotates once with the tray and rotates to the directly below the driving mechanism again, and at this time, the workpiece has been electrolyzed for a sufficient time and can be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the specific structure of the tankless electrolytic polishing equipment used in the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0025] Figure 3 It is a structural schematic diagram for reflecting the state of the first electrode entering the opening of the workpiece in the present invention;

[0026] Figure 4 for Figure 3 Enlarged view of middle part B;

[0027] Figure 5 It is a structural schematic diagram of the lifting device used to reflect the first electrode extending into the opening of the workpiece in the present invention;

[0028] Figure 6 for Figure 5 Enlarged view of middle E part;

[0029] Figure 7 It is a side view used to embody the specific structure of the driving mechanism in the present invention;

[0030] Figure 8 It is a top view used to reflect the specific structure of the driving mechanism in the present invention;

[0031] Fig. 9 It is a top view used to reflect the specific structure of the support tray in the present invention;

[0032] Fig.10 for Figure 3 Enlarged view of the middle D part;

[0033] Fig.11 It is a top view used to reflect the specific structure of the mounting frame in the present invention;

[0034] Fig.12 It is a top view used to reflect the matching relationship between the support rod and the rotating disk in the present invention;

[0035] Fig.13 for Figure 3 Enlarged view of part F in the middle. DETAILED DESCRIPTION

[0036] 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.

[0037] Ginseng Figures 1 to 13 As shown, a specific embodiment of a slotless electrolytic polishing device disclosed by the present invention is formed by forming a passage between the bottom 31 of the workpiece 3 and the second electrode 11 on the surface of the rotatable tray 1 (hereinafter referred to as the tray 1), and then the first electrode 2 is extended into the workpiece 3 from the opening 32 of the workpiece, and the electrolyte is injected from the liquid inlet 21 of the first electrode 2, and the electrolyte is injected into the workpiece 3 after passing through the liquid outlet 22. The method of injecting electrolyte into the workpiece 3 placed forward is conducive to the discharge of bubbles formed by the gas mixed in the electrolyte to ensure the electrolysis effect inside the workpiece 3. Furthermore, the first electrode is used as a guide device for injecting electrolyte into the workpiece 3 while having a conductive effect, so as to achieve the effect of draining an appropriate amount of electrolyte to fill the inside of the workpiece 3, thereby achieving the purpose of achieving a better electrolysis effect on the inside of the workpiece through a simpler structure without the need for an electrolytic cell, so as to solve the problem of increased cost caused by processing a large amount of electrolyte in the electrolytic equipment in the prior art, and has the advantages of simple structure and action process and effectively avoids the problem of electrolysis defects caused by the generation of bubbles.

[0038] Ginseng Figures 1 to 13 As shown, in this embodiment, the tankless electrolytic polishing equipment (hereinafter referred to as the electrolytic polishing equipment) includes: a rotatable tray 1 and a first electrode 2, a second electrode 11 is arranged on the upper surface of the tray 1, a workpiece 3 is placed on the tray 1 and a bottom 31 of the workpiece 3 forms a passage with the second electrode 11; the top and bottom ends of the first electrode 2 form an inlet 21 and an outlet 11 that are interconnected, and the opening 32 of the workpiece 3 is arranged upward for the outlet 22 of the first electrode 2 to extend into, and the electrolyte enters the first electrode 2 through the inlet 21 and fills the inside of the workpiece 3 from the outlet 22. It should be noted that in this embodiment, the first electrode 2 and the second electrode 11 are the cathode and the anode, respectively. The electrolyte is selected as a mixed acid solution, preferably a mixture of dilute hydrochloric acid and dilute sulfuric acid.

[0039] When the inside of the workpiece 3 needs to be electropolished, the opening 32 of the workpiece 3 is firstly turned upward, that is, the workpiece 3 is placed on the support tray 1 in a forward position, and the bottom 31 of the workpiece 3 contacts the second electrode 11. The workpiece 3 and the second electrode 11 are both made of conductive metal materials, so the bottom 31 of the workpiece 3 contacts the second electrode 11 to form a conductive path. Then, the liquid outlet 22 of the first electrode 2 extends into the opening 32 of the workpiece 3, and the electrolyte is injected into the liquid inlet 21 of the first electrode 2. Since the first electrode 2 is hollow inside, the electrolyte is injected into the first electrode 2 from the liquid inlet 21 and fills the inside of the workpiece from the liquid outlet 22 extending into the opening 32 of the workpiece 3. Finally, the liquid outlet 22 of the first electrode 2 is moved out from the opening 32 of the workpiece 3.

[0040] It should be noted that Figure 1 and Figure 3 As shown, in this embodiment, the electrolytic polishing equipment also has an electrolytic power supply 53 for supplying power to the first electrode 2 and the second electrode 11. When the electrolyte fills the interior of the workpiece 3, the injection stops, and the first electrode 2 and the first electrode 21 are supplied to allow the electrolyte injected into the workpiece 3 to undergo an electrolytic reaction in the workpiece 3, thereby achieving a polishing effect in which the raised portion of the inner wall surface of the workpiece 3 is dissolved. Compared with the prior art, the present embodiment omits the electrolytic cell to effectively reduce the amount of electrolyte used, and adopts a forward placement method for the workpiece 3. When the electrolyte fills the interior of the workpiece 3, a certain amount of electrolyte continues to be injected into the workpiece 3. The bubbles generated by the air entering the interior of the workpiece 3 together with the electrolyte float up to the opening 32 of the electrolyte surface close to the workpiece 3 due to the buoyancy and are carried out by the electrolyte overflowing the opening 32 of the workpiece 3. Compared with the prior art, when the workpiece is injected with electrolyte in an inverted manner, the bubbles generated float to the bottom of the workpiece due to the buoyancy of the electrolyte, making it difficult for the bubbles to be discharged from the interior of the workpiece 3, and further resulting in the electrolyte being unable to fill the interior of the workpiece and affecting the electrolysis effect of the inner wall of the workpiece. The electrolyte can fill the interior of the workpiece 3 and effectively reduce the problem of the electrolytic polishing effect being affected by the presence of bubbles in the electrolyte. In the whole step, it is only necessary to place the opening 32 of the workpiece 3 in the forward direction, control the first electrode 2 to extend into the opening 32 of the workpiece 3, and inject a certain amount of electrolyte exceeding the volume of the workpiece 3. It has the advantages of simple structure and actuation process while avoiding the effect of bubbles on the electrolysis process. There is no need for a more complicated structure to guide the generated bubbles out, and it is more suitable for the electrolysis process of workpieces 3 represented by stainless steel thermos cups and thermos bottles.

[0041] Ginseng Figures 1 to 6As shown, the first 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 31; 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 the 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. The electrolyte enters the liquid guide cavity 241 through the liquid inlet 21 and then fills the interior of the workpiece 3 from the liquid outlet 22. Figure 5 As shown, the electrolytic polishing equipment also includes: a lifting device 4, 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 tray 1, the lifting frame 41 drives the electrolytic rod 23 to slide in the height direction relative to the lifting seat 42 so that the liquid outlet 22 of the electrolytic rod 23 extends into the opening 32 of the workpiece 3, and the lifting frame 41 is driven by the driving mechanism 6 to move along the height direction of the lifting seat 42. Specifically, the lifting frame 41 includes a lifting plate 413 and a frame body 414, and the lifting seat includes a mounting plate 421 and a support plate 422, wherein the mounting plate 421 is vertically assembled on the upper surface of the tray 1, 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 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 . The lifting plate 413 slides with the guide rail 423 via the guide block 4121 . 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 .

[0042] Ginseng Figure 5 and Figure 6 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 surface 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 6As shown, it is assembled at the bottom end of the electrode fixing member 4151, so as to achieve the purpose of stably assembling the electrolysis rod 23 on the frame 414. Further, the electrode fixing member 4151 also has a conductive function, and the electrolysis power supply 53 is electrically connected to the motor fixing member 4151 to achieve the purpose of supplying power to the first electrode 2 as a whole.

[0043] Ginseng Figures 1 to 8 As shown, the electrolytic polishing equipment also includes: a frame 5, a tray 1 is arranged in the frame 5, the frame 5 has a top plate 51 arranged above the tray 1, a driving mechanism 6 includes a driving cylinder 61, a lifting plate 62 and a flip member 63, the driving cylinder 61 is assembled above the top plate 51, the driving end of the driving cylinder 61 vertically passes through the top plate 51 downward and is connected to the lifting plate 62, and the bottom end of the lifting plate 62 is rotatably connected to the flip member 63; the lifting frame 41 is equipped with a force-bearing member 411 supported by the flip member 63 on the side away from the first electrode 2, the driving end of the driving cylinder 61 drives the lifting plate 62 and the flip member 63 to descend so that the force-bearing member 411 is out of contact with the flip member 63, and the lifting frame 41 moves down along the height direction of the lifting seat 42 to the opening 32 extending into the workpiece 3. The lifting frame 41 is located below the force-bearing member 411 and fixed with a positioning member 412. When the first electrode 2 extends into the opening 32 of the workpiece 3, the positioning member 412 abuts against the upper surface of the lifting seat 42. Specifically, when the electrolytic rod 23 of the first electrode 2 extends into the opening 32 of the workpiece 3 , the positioning member 412 abuts against the upper surface of the support plate 422 connected to the mounting plate 421 of the lifting seat 42 .

[0044] Ginseng Figure 1 and Figure 3 ,as well as Figures 9 to 12 As shown, the tray 1 is provided with a driving shaft 54 ​​along the axial direction to drive the tray 1 to rotate, a plurality of lifting seats 42 are arranged around the driving shaft 54 ​​on the upper surface of the tray 1, the second electrode 11 is evenly distributed on the upper surface of the tray 1 in a sheet shape, and the tray 1 is provided with a positioning seat 16 around the second electrode 11. After the workpiece 3 is inserted into the positioning seat 16, the bottom 31 contacts the second electrode 16. The workpiece 3 is located at a position C (refer to FIG. 6 ) directly below the driving mechanism 6. Figure 3 and Fig. 9 The workpiece 3 is placed on the support plate 1, and the support plate 1 drives the workpiece 3 to rotate again to the position C just below the driving mechanism 6, and then the workpiece 3 is removed from the support plate 1. The support plate 1 is provided with a plurality of through holes 151 for electrolyte to pass through, and a liquid collecting box 52 is provided below the support plate 1 in the frame 5, and a guide plate 13 is provided between the liquid collecting box 52 and the support plate 1, and the electrolyte passing through the through holes 151 is guided by the guide plate 13 and then flows into the liquid collecting box 52.

[0045] Specifically, Figure 2 and Figure 4 ,as well as Figure 7 and Figure 8As shown, the driving mechanism 6 also includes a support 64 and a support plate 642. The support 64 is fixedly connected to the top plate 51 of the frame 5 through the bottom plate 641. The support 64 is arranged perpendicular to the bottom plate 641 and is fixedly connected to a slider 6411. The support plate 642 is arranged as a right-angled triangle plate, and the two right-angled sides of the length of the support plate 642 are respectively arranged to fit the support 64 and the bottom plate 641. The driving cylinder 61 is assembled on the bottom plate 641. The driving end of the driving cylinder 61 passes through the bottom plate 641 and the top plate 51 of the frame 5 and is connected to the lifting plate 62 through the connecting piece 611. The lifting plate 62 is fixedly connected to the slide rail 621 that is mutually engaged with the slider 6411 along its height direction. The bottom end of the lifting plate 62 is rotatably connected to the lifting plate 62 through the connecting shaft 631. Further, refer to Figure 2 , Figure 4 as well as Figure 6 As shown, the flip part 63 is configured as a plate-like member with a certain length and thickness, and a wedge-shaped surface 632 is formed between the bottom surface of the flip part 63 and the connection portion thereof away from the connecting shaft 631. The workpiece 3 is placed into the positioning seat 16 at the 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 outside the opening 32 of the workpiece 3 (as shown in FIG. Figure 4 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 state of being separated from each other. At this time, the lifting frame 41 is subjected to the gravity as a whole. 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 piece 412 assembled on the lifting plate 413 abuts against the upper edge of the guide rail 423. The flip member 63 loses the gravity applied by the force-bearing member 411 and flips upward with the connecting shaft 631 as the axis. Figure 4 The state shown. As the flipping member 63 is completely separated from the force-bearing member 411, it can be seen that there is no contact between the driving mechanism 6 and the lifting device 4 at this time. 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. During the rotation of the supporting tray 1, the wedge-shaped surface of the flipping member 63 can provide an air escape area to avoid interference with the lifting frame 41. In this embodiment, the connecting shaft 631 is selected as a flip pin. When the flipping member 63 loses the downward pulling force applied by the force-bearing member 411, the connecting shaft 631 drives the force-bearing member 411 to flip to Figure 4 The turning member 63 is moved upward to the position shown in the figure until the next driving cylinder 61 drives the turning member 63 to rise to contact the force-bearing member 411 again, and the turning member 63 rotates in the opposite direction with the connecting shaft 631 as the axis. Figure 2 Status shown.

[0046] When the positioning seat 16 of the next station rotates again to the position C directly below the driving cylinder 6, since the force-bearing member 411 of the lifting frame 41 of the station is not subjected to any upward force during the rotation of the driving shaft 54, the positioning member 412 connected to the lifting plate 413 of the lifting frame 41 of the station is in a state of abutting against the top of the guide rail 423. At this time, the driving end of the driving cylinder 61 is retracted, and the lifting plate 62 drives the flip member 63 to move upward so that the flip member 63 applies an upward pulling force to the force-bearing member 411, so as to drive the lifting frame 411 as a whole and the first electrode 2 as a whole to rise until Figure 1 and Figure 2 The workpiece 3 is then placed into the positioning seat 16 at position C again and the driving end of the driving cylinder 61 is extended again so that the liquid outlet 22 of the first electrode 2 extends into the opening 32 of the workpiece 3. The action process is consistent with the above and is not described here. Then, the electrolyte is injected into the liquid inlet 21 of the first electrode 2 again until the workpiece 3 is filled, and 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.

[0047] In the above manner, the driving shaft 54 ​​drives the tray 1 to move in a circular motion, and a plurality of sheet-shaped second electrodes 11 are evenly distributed on the tray 1. The workpiece 3 is placed in the positioning seat 16 at the position C directly below the driving mechanism 6, and the bottom 31 is in contact with the second electrode 11. Then, the lifting frame 41 is controlled to move down along the lifting seat 42 until the electrolytic rod 23 extends into the opening 32 of the workpiece 3, so as to fill the inside of the workpiece 3 with electrolyte and start electrolytic polishing of the inner wall surface of the workpiece 3. Then, each time the tray 1 rotates in the process of circular rotation, the second electrodes 11 evenly distributed on its surface rotate to the position directly below the driving mechanism 6, so as to facilitate the placement and loading of the workpiece 3 and the injection of electrolyte. Until the workpiece 3 rotates with the support tray 1 for one circle and then rotates again to the position C directly below the driving mechanism 6, the interior of the workpiece 3 has undergone sufficient electrolysis time and achieved a good electrolytic polishing effect, so that the lifting frame 41 as a whole drives the first electrode 2 as a whole to move out of the opening 32 of the workpiece 3, and the workpiece 3 that has completed electrolytic polishing can be removed from the positioning seat 16, and other workpieces 3 with electrolytic polishing can be replaced and placed in the positioning seat 16 and the above actions can be repeated to electrolytically polish the interior.

[0048] Combination Figure 1 , Figure 3 and Fig.13As shown, the electrolytic polishing equipment also includes a current collecting device 56, which is coaxially mounted on the top of the driving shaft 54, and the current collecting device 56 supplies power to the electrolytic power source 53 through a flexible conductive device 531. The electrolytic power source 53 usually needs to be powered by wiring. In this embodiment, the current collecting device 56 mounted on the top of the driving shaft 54 ​​is externally powered, and the current collecting device 56 is powered by the flexible conductive device 531 during the process of the driving shaft 54, thereby avoiding the situation in which the electrolytic power source 53 is entangled during the rotation of the driving shaft 54 ​​due to the external power supply obtained by the wiring. Specifically, in this embodiment, the flexible conductive device 531 is selected as a carbon brush. Further, the flexible conductive device 531 selected as a carbon brush can be installed on the driving shaft 54 ​​or the electrolytic power source 53. Fig.13 The structure diagram shown is when the flexible conductive device 531 is fixedly connected to the electrolytic power source 53 in an annular shape, and a contact 561 connected to the collector 56 is formed on the drive shaft 54, so that the flexible conductive device 531 continuously touches the contact 561 formed on the drive shaft 54 ​​during the rotation of the drive shaft 54 ​​to achieve the purpose of supplying power to the electrolytic power source 53. If the flexible conductive device 531 is fixedly connected to the drive shaft 54 ​​in an annular shape, the flexible conductive device 531 is connected to the collector 56, and the flexible conductive device 531 continuously touches the contact 561 formed on the electrolytic power source 53 during the rotation of the drive shaft 54, so as to achieve the purpose of supplying power to the electrolytic power source 53 by the collector 56 (this assembly method is not shown). Through the design of the flexible conductive device 531 and the collector 56, the problem of entanglement between the line and the rotating drive shaft 54 ​​caused by the electrolytic power source 53 being supplied by wiring can be effectively avoided. It should be noted that the flexible conductive device 531 can be set to any device that can achieve light contact, not limited to carbon brushes.

[0049] Ginseng Figures 9 to 12 As shown, the tray 1 includes a mounting frame 14 and a turntable 15, the mounting frame 14 includes a turntable 141 and a plurality of support rods 142, the driving shaft 54 ​​is coaxially fixed to the turntable 141, and the plurality of support rods 142 are evenly distributed in a ring shape near the edge of the turntable 141; the turntable 15 is coaxial with the turntable 141 and is arranged in a concentric circle, and the bottom surface of the turntable 15 is fitted on the upper surfaces of the plurality of support rods 142, the second electrodes 11 are evenly distributed on the side of the turntable 15 away from the support rods 142, and the through hole 151 of the tray 1 is opened in the gap between two adjacent support rods 142 of the turntable 15. The guide plate 13 is arranged below the mounting frame 14 and fixedly connected to the frame 5. A clearance opening 131 is formed in the center of the guide plate 13 for the drive shaft 54 ​​to pass through. The bottom surface of the guide plate 13 is connected to a plurality of liquid outlet pipes 132. After the electrolyte flows into the guide plate 13 through the through hole 151, it is guided into the liquid collecting tank 52 by the liquid outlet pipe 132. It is also preferred that the liquid outlet pipe 132 is connected to the liquid collecting tank 52 through a hose or a pipe.

[0050] It should be noted that, in this embodiment, the first electrode 2 is composed of a liquid guide 24 and an electrolytic rod 23, and both the liquid guide 24 and the electrolytic rod 23 are made of conductive metal. Among them, the liquid guide 24 is formed into a funnel shape with a large top and a small bottom. After the electrolyte is injected into the liquid guide 24 from the liquid inlet 21, it is guided into the electrolytic rod 23 by the liquid guide cavity 241, and injected into the workpiece 3 from the liquid outlet 22 under the guidance of the electrolytic rod 23. The electrolyte can be injected into the liquid inlet 21 of the first electrode 2 by any other device (not shown) that can inject liquid, such as a quantitative pump (not shown). The quantitative pump or other liquid injection device is arranged directly below the driving device 6 to achieve the purpose of injecting electrolyte into the workpiece 3 located at position C through the first electrode 2. The aforementioned quantitative pump is only a specific embodiment, and can also be implemented by a liquid adding pipeline (not shown) with a quantitative delivery of the electrolyte. In view of the fact that the control implementation means of the volume of the electrolyte injected into the workpiece 3 is not the invention point of this application, it is briefly described in the specification. Furthermore, Figure 5 and Figure 6 The electrolytic rod 23 and the liquid guide 24 are shown in the form of being integrated and fixed to each other. However, it should be noted that the liquid guide 24 and the electrolytic rod 23 are connected to each other in a detachable manner, that is, the bottom end of the funnel-shaped liquid guide 24 is plugged into the top opening of the electrolytic plate 23, so as to achieve the purpose of receiving and draining the electrolyte flowing out of the liquid adding device such as a quantitative pump by the liquid inlet 21 with a larger diameter formed at the top of the liquid guide 24. Alternatively, the split liquid guide 24 can be docked above the electrolytic rod 23 using a manipulator (not shown) when it is necessary to inject electrolyte into the workpiece 3, and then the liquid adding device is allowed to pass the electrolyte into the liquid inlet 21 formed at the top of the liquid guide 24, and the effect of receiving and draining the electrolyte by the funnel-shaped liquid guide 24 can still be achieved. When the liquid adding device stops injecting liquid, the manipulator drives the liquid guide 24 to disengage from the docking state with the electrolytic rod 23, and the drive shaft 54 ​​drives the next second electrode 11 to rotate to position C to repeat the above-mentioned action.

[0051] It should be noted that, since the present embodiment adopts a design without an electrolytic cell, and a metering pump or other device can be used to inject an electrolyte of just the right volume into the workpiece 3 through the first electrode 2. However, in order to achieve a good effect of removing bubbles, after the metering pump injects a consistent volume of electrolyte into the workpiece 3 through the first electrode 2, it is necessary to continue to inject a certain amount of electrolyte into the workpiece 3 to discharge the bubbles generated and floated in the electrolyte in the workpiece 3 from the workpiece 3. The electrolyte overflowing from the opening 32 of the workpiece 3 will flow onto the support tray 1, in order to avoid the problem of electrolyte falling on the support tray 1 causing pollution to the production space. In the present application, since the electrolyte is poured into the workpiece 3 from top to bottom, the momentum and impulse carried by the electrolyte itself in the process of pouring the electrolyte into the workpiece 3 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. Therefore, while reducing the amount of electrolyte used, the present application further avoids 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.

[0052] In this embodiment, the structure of the tray 1 is designed to guide the electrolyte flowing to the surface of the tray 1 to the liquid collecting box 52, thereby keeping the surface of the tray 1 clean and recovering the electrolyte. Specifically, in this embodiment, the tray 1 is composed of a mounting frame 14 and a turntable 15. Further, the mounting frame 14 includes a turntable 141 and a plurality of supporting rods 142, the driving shaft 54 ​​passes through the center of the turntable 141 and is coaxially fixed, and the plurality of supporting rods 142 are assembled to the edge of the turntable 141 to form a skeleton for supporting the turntable 15.

[0053] A plurality of second electrodes 11 are distributed on the upper surface of the rotating disk 15, and the lifting seat 42 of the lifting device 4 is assembled on the upper surface of the rotating disk 141 and arranged opposite to the second electrodes 11, so when the driving shaft 54 ​​is started, the lifting seat 42 and the second electrodes 11 arranged opposite thereto rotate synchronously. The electrolyte flowing to the surface of the rotating disk 15 passes through the through hole 151 opened in the rotating disk 15, and because the through hole 151 is arranged at the gap between two adjacent supporting rods 142, the electrolyte can directly fall into the guide disk 13 after passing through the through hole 151 without being interfered by the supporting rod 142, which is beneficial to the recovery of the electrolyte and can further prevent the electrolyte from corroding the supporting rod 142.

[0054] Furthermore, the bottom end of the drive shaft 54 ​​is connected to the drive motor 541, and a clearance opening 131 is provided in the center of the inner guide disk 13 disposed on the frame 5 for the drive shaft 54 ​​to pass through, and the inner edge and outer edge of the guide disk 131 respectively form convex rings (not marked) upward to prevent the electrolyte that has fallen into the guide disk 131 from flowing down from its inner edge or outer edge. The height of the upper surface of the guide disk 131 near the clearance opening 131 is higher than the height on the other side and forms a slope. The liquid outlet pipe 132 of the guide disk 13 is connected to its bottom wall away from the clearance opening 131. When the electrolyte falls into the guide disk 13, it is guided to the liquid outlet pipe 132 by the slope formed on its surface and then guided to the liquid collecting tank 52 by the liquid outlet pipe 132. It should be noted that 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. Furthermore, an industrial chiller 55 is provided below the guide plate 131 in the frame 5, and a liquid outlet pipe 132 of the guide plate 131 is connected to a liquid inlet (not shown) of the industrial chiller 55 through a hose or other means.

[0055] 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.

[0056] 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.

[0057] 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. A tankless electrolytic polishing device, characterized in that: include: A rotatable tray and a first electrode, a second electrode is disposed on the upper surface of the tray, and the second electrode contacts the workpiece and forms a passage; The top and bottom ends of the first electrode form a liquid inlet and a liquid outlet that are interconnected. The liquid outlet extends into an opening of the workpiece that is arranged upward. After the electrolyte enters the first electrode through the liquid inlet, it passes through the liquid outlet and fills the interior of the workpiece. The liquid outlet moves out of the opening of the workpiece.

2. The tankless electrolytic polishing equipment according to claim 1, characterized in that: The first electrode comprises an electrolytic rod and a liquid guide, the electrolytic rod is hollow inside and forms the liquid outlet 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 then flows through the liquid outlet to fill the interior of the workpiece.

3. The tankless electrolytic polishing equipment according to claim 2, characterized in that: Also includes: A lifting device, the lifting device includes a lifting frame and a lifting seat, the lifting seat is vertically fixed to the upper surface of the supporting tray, the lifting frame drives the electrolytic rod to slide in the height direction relative to the lifting seat so that the liquid outlet of the electrolytic rod extends into the opening of the workpiece, and the lifting frame is driven by a driving mechanism to move along the height direction of the lifting seat.

4. The tankless electrolytic polishing equipment according to claim 3, characterized in that: Also includes: The frame, the tray is arranged in the frame, the frame has a top plate arranged above the tray, the driving mechanism comprises a driving cylinder, a lifting plate and a flipping member, the driving cylinder is assembled above the top plate, the driving end of the driving cylinder vertically passes through the top plate downward and is connected to the lifting plate, and the bottom end of the lifting plate is rotatably connected to the flipping member; The lifting frame is equipped with a force-bearing member supported by the flip member on the side away from the first 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. The lifting frame moves downward along the height direction of the lifting seat to the opening of the workpiece where the liquid outlet of the first electrode extends into the workpiece.

5. The tankless electrolytic polishing equipment according to claim 4, characterized in that: A driving shaft for driving the support tray to rotate is axially penetrated through the support tray, and a plurality of lifting seats are arranged around the driving shaft on the upper surface of the support tray. The workpiece is placed on the support plate directly below the driving mechanism, and the support plate drives the workpiece to rotate again to directly below the driving mechanism to remove the workpiece from the support tray.

6. The tankless electrolytic polishing equipment according to claim 5, characterized in that: The support tray is provided with a plurality of through holes for electrolyte to flow through, a liquid collecting box is provided in the frame below the support tray, a guide plate is provided between the liquid collecting box and the support tray, and the electrolyte passes through the through holes and is guided by the guide plate and then flows into the liquid collecting box.

7. The tankless electrolytic polishing equipment according to claim 6, characterized in that: The tray includes a mounting frame and a turntable, the mounting frame includes a turntable and a plurality of supporting rods, the driving shaft is coaxially fixed with the turntable, and the plurality of supporting rods are evenly distributed near the edge of the turntable; The turntable is coaxial with the rotating disk and is arranged in concentric circles, and the bottom surface of the turntable is arranged in contact with the upper surfaces of a plurality of support rods. The second electrodes are evenly distributed on the side of the turntable away from the support rods, and the through holes formed by the supporting tray are opened in the gap between two adjacent support rods of the turntable.

8. The tankless electrolytic polishing equipment according to claim 7, characterized in that: The guide plate is arranged below the mounting frame and fixed to the frame. A clearance opening is formed in the center of the guide plate for the drive shaft to pass through. The bottom surface of the guide plate is connected to a plurality of liquid outlet pipes. After the electrolyte flows into the guide plate through the through hole, it is guided into the liquid collecting tank by the liquid outlet pipe.

9. The tankless electrolytic polishing equipment according to claim 7, characterized in that: The second electrodes are evenly distributed on the upper surface of the rotating disk in a sheet shape. A positioning seat is arranged around the second electrodes on the rotating disk. After the workpiece is inserted into the positioning seat, the bottom of the workpiece contacts the second electrode.

10. The tankless electrolytic polishing equipment according to claim 5, characterized in that: Also includes: An electrolytic power source and a current collecting device, wherein the current collecting device is coaxially assembled on the top end of the driving shaft, and the current collecting device supplies power to the electrolytic power source through a flexible conductive device.

Images