A cobalt removal device for polycrystalline diamond composite sheet and a cobalt removal method using the device

Abstract

The present invention belongs to the field of polycrystalline diamond composite sheet production, and specifically provides a polycrystalline diamond composite sheet cobalt removal device and a cobalt removal method using the device, comprising an immersion box, a bracket is fixedly connected to the top of the immersion box, a top plate is fixedly connected to the top of the bracket, a motor is fixedly connected to the top of the top plate, and the output end of the motor passes through the top plate and is fixedly connected to a reciprocating screw rod; the present invention provides a polycrystalline diamond composite sheet cobalt removal device and a cobalt removal method using the device, when the polycrystalline diamond composite sheet is immersed in the cobalt removal liquid, the reciprocating screw rod is controlled to rotate clockwise, so that the slider rotates following the clockwise rotation of the reciprocating screw rod, and the placement table is driven to rotate, so that the polycrystalline diamond composite sheet rotates in the cobalt removal liquid, and the bubbles generated by the chemical reaction of the polycrystalline diamond composite sheet external to the polycrystalline diamond composite sheet can be separated from the polycrystalline diamond composite sheet by continuously rotating the polycrystalline diamond composite sheet, so as to prevent the cobalt removal effect of the polycrystalline diamond composite sheet from being affected by the obstruction of the bubbles.

Description

Technical Field

[0001] The invention belongs to the field of polycrystalline diamond composite sheet production, in particular to a polycrystalline diamond composite sheet decobaltization device and a decobaltization method using the device. Background Art

[0002] The cobalt in polycrystalline diamond composite (PDC) exists as a binder, which bonds the diamond particles together. However, in practical applications such as cutting and grinding, the presence of cobalt will have an adverse effect on wear resistance. Because the hardness of cobalt is much lower than that of diamond, it is easy to be worn away during friction and wear, resulting in the shedding of diamond particles. For example, when the PDC drill bit used in oil mining is working, if there is cobalt, under the high friction of the formation rock, the wear of cobalt will cause the surrounding diamond particles to lose their bonding support, thereby reducing the service life of the drill bit. Through the decobalt treatment, the phenomenon of diamond particle shedding caused by cobalt wear can be reduced, and the wear resistance of PDC can be significantly improved.

[0003] In the existing technology, the decobalting of the polycrystalline diamond composite sheet is generally performed by immersing it in a decobalting liquid. However, when the polycrystalline diamond composite sheet is immersed in the decobalting liquid, the chemical reaction occurring during the decobalting process will produce gas, resulting in the formation of bubbles on the surface of the polycrystalline diamond composite sheet. The position on the surface of the polycrystalline diamond composite sheet blocked by the bubbles is difficult to continue to react with the decobalting liquid. In addition, after the polycrystalline diamond composite sheet is taken out from the decobalting liquid after being immersed in the decobalting liquid, a large amount of decobalting liquid will be carried on its surface. The existing technology is not convenient for processing the decobalting liquid carried on the surface of the polycrystalline diamond composite sheet, which not only causes a waste of the decobalting liquid, but also causes environmental pollution when the decobalting liquid drips to the outside.

[0004] To this end, the present invention provides a polycrystalline diamond composite sheet decobaltization device and a decobaltization method using the device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, the problem that when a polycrystalline diamond composite sheet is immersed in a decobaltizing liquid, a chemical reaction occurring during the decobaltizing process will produce gas, resulting in the formation of bubbles on the surface of the polycrystalline diamond composite sheet, and the position on the surface of the polycrystalline diamond composite sheet blocked by the bubbles is difficult to continue to react with the decobaltizing liquid. In addition, after the polycrystalline diamond composite sheet is immersed in the decobaltizing liquid and taken out, a large amount of decobaltizing liquid will be carried on its surface. The prior art is not convenient for processing the decobaltizing liquid carried on the surface of the polycrystalline diamond composite sheet, which not only causes the waste of the decobaltizing liquid, but also the problem that the decobaltizing liquid dripping to the outside world will cause environmental pollution. The present invention proposes a decobaltizing device for a polycrystalline diamond composite sheet and a decobaltizing method using the device.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a cobalt removal device for a polycrystalline diamond composite sheet described in the present invention comprises an immersion box, the top of the immersion box is fixedly connected with a bracket, the top of the bracket is fixedly connected with a top plate, the top of the top plate is fixedly connected with a motor, the output end of the motor passes through the top plate and is fixedly connected with a reciprocating screw, the outer wall of the reciprocating screw is connected with a sliding block through a screw nut pair, the bottom of the sliding block is fixedly connected with a sleeve, the outer wall of the bracket is provided with an adjustment component used in conjunction with the sleeve, the bottom of the sleeve is fixedly connected with a first sliding shaft, the bottom of the first sliding shaft is fixedly connected with a first limit block, the outer wall of the first sliding shaft is slidably connected with a placing table, the outer wall of the first sliding shaft is sleeved with a third spring, the top of the third spring is fixedly connected to the sleeve, the bottom of the third spring is fixedly connected to the placing table, a plurality of placing grooves are equidistantly provided inside the placing table, and a clamping unit is provided inside the placing groove.

[0007] Preferably, the adjustment assembly includes a fixing plate, which is fixedly mounted on the outer wall of the bracket, a through slot is provided inside the fixing plate, the sleeve fits the inner wall of the through slot, two clamping blocks are symmetrically and slidably connected inside the fixing plate, a fifth spring is fixedly connected to one side of the clamping block, one end of the fifth spring is fixedly connected to the fixing plate, the other side of the clamping block extends to the inside of the through slot and is set to an inclined surface, and a clamping slot is provided on the outer wall of the sleeve to cooperate with the clamping block.

[0008] Preferably, the clamping unit includes four mounting grooves, which are equidistantly arranged on the inner wall of the placement groove, and the inner wall of the mounting groove is slidably connected with an L-shaped plate, one side of the L-shaped plate is fixedly connected with a second sliding shaft, the second sliding shaft is slidably connected to the placement table, one end of the second sliding shaft is fixedly connected with a first spring, one end of the first spring is fixedly connected to the placement table, and the other side of the L-shaped plate is fixedly connected with a protrusion, and the top and bottom of the protrusion are both set as inclined surfaces.

[0009] Preferably, the inner wall of the protrusion is fixedly connected to a first rotating shaft, the outer wall of the first rotating shaft is rotatably connected to a first pulley, and the inner wall of the L-shaped plate is provided with a plurality of water outlet grooves at equal intervals.

[0010] Preferably, the outer wall of the bracket is fixedly connected with a plurality of limit plates equidistantly below the fixed plate, the limit plate is arranged in a ring shape, the inner wall of the limit plate is slidingly connected with a plurality of top blocks equidistantly, one side of a plurality of the top blocks is arranged as an inclined surface, the other side of the top block is fixedly connected with a fourth spring, one end of the fourth spring is fixedly connected to the limit plate, the outer wall of the placing table is fixedly connected with a plurality of fixed shafts equidistantly, the outer walls of a plurality of the fixed shafts are rotatably connected with rotating plates, a spring sheet is fixedly connected between the rotating plate and the placing table, the outer wall of the placing table is fixedly connected with a positioning plate above the rotating plate, and the elastic force of the fourth spring is greater than the elastic force of the third spring.

[0011] Preferably, the bottom of the L-shaped plate is slidably connected to a third sliding shaft, the top of the third sliding shaft is fixedly connected to a support plate, the four sides of the support plate are arranged with inclined surfaces, the bottom of the third sliding shaft is fixedly connected to a second limit block, the outer wall of the third sliding shaft is sleeved with a second spring, the top of the second spring is fixedly connected to the support plate, the bottom of the second spring is fixedly connected to the L-shaped plate, the inner wall of the water outlet trough is fixedly connected to a second rotating shaft, the outer wall of the second rotating shaft is rotatably connected to a second pulley, and the outer wall of the second pulley is equidistantly fixedly connected to a plurality of convex rings.

[0012] Preferably, a baffle is fixedly connected to the inner wall of the soaking box, the baffle is arranged in a ring shape and its outer wall is arranged in a ring-shaped arc surface, the inner wall of the mounting groove is arranged in a slope, and a plurality of drain grooves are equidistantly provided at the bottom of the placement table, and the drain grooves are communicated with the mounting groove.

[0013] Preferably, the bottom of the inner wall of the immersion box is fixedly connected with a fourth sliding shaft, the outer wall of the fourth sliding shaft is slidably connected with a piston plate, the piston plate is slidably connected to the immersion box, the outer wall of the fourth sliding shaft is sleeved with a sixth spring, the top of the sixth spring is fixedly connected to the piston plate, the bottom of the sixth spring is fixedly connected to the immersion box, the top of the piston plate is set as an annular inclined surface, the inner wall of the piston plate is fixedly connected with a filter plate, the inner wall of the immersion box is provided with an annular groove, the bottom of the annular groove and the bottom of the piston plate are in the same horizontal plane, and the bottom of the first limit block is rotatably connected with a rotating block.

[0014] Preferably, a plurality of stirring blades are fixedly connected to the bottom of the placement table at equal intervals.

[0015] A method for removing cobalt from a polycrystalline diamond composite sheet cobalt removal device, the method for removing cobalt adopts the above-mentioned polycrystalline diamond composite sheet cobalt removal device, and the steps of the method for removing cobalt are as follows:

[0016] S1: Put the decobaltizing liquid into the immersion box and make the level of the decobaltizing liquid lower than the annular groove, put the polycrystalline diamond composite sheet into the placement groove and press it down, cooperate with the clamping unit to fix the polycrystalline diamond composite sheet in the placement groove;

[0017] S2: Control the placement table to move downward into the decobalting liquid to immerse the polycrystalline diamond compact to decobaltize, and control the placement table immersed in the decobalting liquid to rotate so that bubbles generated by chemical reactions outside the polycrystalline diamond compact are separated from the polycrystalline diamond compact;

[0018] S3: After soaking and decobalting, the placement table is controlled to rotate to throw out the decobalting liquid carried outside the polycrystalline diamond composite sheet, and then the placement table is controlled to move above the limit plate, and then the placement table is controlled to move downward, and several groups of top blocks are cooperated to make the placement table vibrate downward continuously for multiple times to shake off the decobalting liquid adhered to the polycrystalline diamond composite sheet.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. A device for decobalting a polycrystalline diamond composite sheet and a method for decobalting using the device are described in the present invention. When the polycrystalline diamond composite sheet is immersed in the decobalting liquid, the reciprocating screw is controlled to rotate clockwise, and the adjusting component is cooperated to make the slider rotate along with the clockwise rotation of the reciprocating screw, thereby driving the placement table to rotate, so that the polycrystalline diamond composite sheet rotates in the decobalting liquid. By continuously rotating the polycrystalline diamond composite sheet, bubbles generated by external chemical reactions of the polycrystalline diamond composite sheet can be separated from the polycrystalline diamond composite sheet, thereby preventing the decobalting effect of the polycrystalline diamond composite sheet from being affected by the obstruction of the bubbles.

[0021] 2. A device for removing cobalt from a polycrystalline diamond composite sheet and a method for removing cobalt using the device described in the present invention, after the polycrystalline diamond composite sheet is immersed in cobalt removal, first control the placement table to move to the top of the cobalt removal liquid and be located inside the baffle, then control the placement table to rotate, drive the polycrystalline diamond composite sheet to rotate, thereby throwing out the cobalt removal liquid outside the polycrystalline diamond composite sheet, and allowing the thrown out cobalt removal liquid to enter the installation groove through the provided water outlet groove, and the cobalt removal liquid entering the installation groove moves downward along the inclined surface of the inner wall of the installation groove, and passes through the drain groove and drips back into the immersion box, thereby avoiding the decobalt removal liquid dripping into the outside world and causing environmental pollution.

[0022] 3. The device for removing cobalt from a polycrystalline diamond composite sheet and the method for removing cobalt using the device described in the present invention control the polycrystalline diamond composite sheet that has been immersed to move to the top of a limit plate first, and then control the placement table to move downward. Through the cooperation of several groups of top blocks, the placement table is vibrated downward continuously for multiple times, so that the cobalt removal liquid adhered to the polycrystalline diamond composite sheet can be shaken off downward, so that the cobalt removal liquid can fall into the immersion box for recycling.

[0023] 4. The cobalt removal device for a polycrystalline diamond composite sheet and the cobalt removal method using the device described in the present invention facilitate the immersion of the side of the polycrystalline diamond composite sheet by the cobalt removal liquid by means of a plurality of water outlet troughs, and reduce the support area of ​​the support plate for the polycrystalline diamond composite sheet by setting the surroundings of the support plate as inclined surfaces, thereby preventing the contact between the cobalt removal liquid and the polycrystalline diamond composite sheet due to the obstruction of the L-shaped plate and the support plate, and when the placement table vibrates downward, the support plate moves downward under the action of inertia, thereby avoiding the rigid collision between the polycrystalline diamond composite sheet and the L-shaped plate, which would cause damage to the polycrystalline diamond composite sheet.

[0024] 5. The device for decobalting a polycrystalline diamond composite sheet and the method for decobalting using the device described in the present invention can filter the decobaltizing liquid in the immersion box through a filter plate. As the piston plate moves upward, the decobaltizing liquid passes through the filter plate and flows to the bottom of the piston plate, while the debris of the polycrystalline diamond composite sheet dropped due to immersion remains above the piston plate. When the piston plate is flush with the annular groove, the debris of the polycrystalline diamond composite sheet dropped due to immersion slides downward along the inclined surface of the top of the piston plate and passes through the annular groove and falls to the bottom of the piston plate, thereby preventing the debris of the polycrystalline diamond composite sheet dropped due to immersion from adhering to the subsequently immersed polycrystalline diamond composite sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 is a front view of the present invention;

[0027] Figure 2 is a front cross-sectional view of the present invention;

[0028] Figure 3 is a top cross-sectional view of the fixing plate of the present invention;

[0029] Figure 4 It is a three-dimensional diagram of the top block and the rotating plate of the present invention in cooperation with each other;

[0030] Figure 5 It is a three-dimensional diagram of the L-shaped plate and the support plate of the present invention in cooperation with each other;

[0031] Figure 6 It is a stereoscopic diagram of the piston plate and the filter plate of the present invention in cooperation with each other;

[0032] Figure 7 The present invention Figure 2 The enlarged view of point A in the middle;

[0033] Figure 8 The present invention Figure 2 The enlarged view of point B in the middle;

[0034] Fig. 9 The present invention Figure 2 Enlarged view of point C in the middle;

[0035] Fig.10 The present invention Fig. 9 The enlarged view of point D in the middle;

[0036] In the figure: 1, soaking box; 2, bracket; 3, top plate; 4, motor; 5, reciprocating screw; 6, slider; 7, sleeve; 8, first slide shaft; 9, first limit block; 10, placement table; 11, placement groove; 12, installation groove; 13, L-shaped plate; 14, second slide shaft; 15, first spring; 16, bump; 17, first rotating shaft; 18, first pulley; 19, third slide shaft; 20, second spring; 21, second limit block; 22, support plate; 23, water outlet trough; 24, The second rotating shaft; 25. The second pulley; 26. The convex ring; 27. The third spring; 28. The limit plate; 29. ​​The fourth spring; 30. The top block; 31. The positioning plate; 32. The fixed shaft; 33. The rotating plate; 34. The spring sheet; 35. The fixed plate; 36. The fifth spring; 37. The block; 38. The slot; 39. The fourth sliding shaft; 40. The sixth spring; 41. The piston plate; 42. The annular groove; 43. The filter plate; 44. The stirring blade; 45. The drain trough; 46. The rotating block; 47. The baffle. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0038] like Figures 1 to 10 As shown, the present invention provides a technical solution, a cobalt removal device for a polycrystalline diamond composite sheet, comprising an immersion box 1, a bracket 2 is fixedly connected to the top of the bracket 2, a top plate 3 is fixedly connected to the top of the top plate 3, a motor 4 is fixedly connected to the top of the top plate 3, the output end of the motor 4 passes through the top plate 3 and is fixedly connected to a reciprocating screw 5, the outer wall of the reciprocating screw 5 is connected to a slider 6 through a screw nut pair, the bottom of the slider 6 is fixedly connected to a sleeve 7, the outer wall of the bracket 2 is provided with an adjustment component used in conjunction with the sleeve 7, the bottom of the sleeve 7 is fixedly connected to a first sliding shaft 8, the bottom of the first sliding shaft 8 is fixedly connected to a first limit block 9, the outer wall of the first sliding shaft 8 is slidably connected to a placing table 10, the outer wall of the first sliding shaft 8 is sleeved with a third spring 27, the top of the third spring 27 is fixedly connected to the sleeve 7, the bottom of the third spring 27 is fixedly connected to the placing table 10, a plurality of placing grooves 11 are equidistantly provided inside the placing table 10, and a clamping unit is provided inside the placing groove 11.

[0039] Through the above technical scheme, the decobalting liquid is loaded into the immersion box 1, the polycrystalline diamond composite sheet is placed in the placement groove 11, the polycrystalline diamond composite sheet is clamped by the clamping unit, and the polycrystalline diamond composite sheet is fixed in the placement groove 11, the motor 4 is started, and the reciprocating screw rod 5 is driven to rotate counterclockwise, and the adjustment component is coordinated to make the slider 6 move up and down reciprocatingly, and the sleeve 7 moves up and down reciprocatingly. When the slider 6 moves downward, the sleeve 7 and the placement table 10 are driven to move downward. When the slider 6 moves to the bottom, the polycrystalline diamond composite sheet enters the decobalting liquid for immersion. After the polycrystalline diamond composite sheet is immersed in the decobalting, the reciprocating screw rod 5 is continued to be controlled to rotate counterclockwise. The slider 6 is moved upward, and the sleeve 7 and the placement table 10 are driven to move upward, so that the polycrystalline diamond composite sheet is taken out from the decobalting liquid. When the polycrystalline diamond composite sheet is immersed in the decobalting liquid, the motor 4 is started to drive the reciprocating screw 5 to rotate clockwise, and the adjusting component is cooperated to make the slider 6 rotate following the clockwise rotation of the reciprocating screw 5, drive the sleeve 7 to rotate, and make the placement table 10 rotate, so as to drive the polycrystalline diamond composite sheet to rotate in the decobalting liquid. By continuously rotating the polycrystalline diamond composite sheet, the bubbles generated by the chemical reaction outside the polycrystalline diamond composite sheet can be separated from the polycrystalline diamond composite sheet, so as to prevent the decobalting effect of the polycrystalline diamond composite sheet from being affected by the obstruction of the bubbles.

[0040] Specifically, the adjustment component includes a fixing plate 35, which is fixedly mounted on the outer wall of the bracket 2. A through groove is provided inside the fixing plate 35, and the sleeve 7 fits the inner wall of the through groove. Two clamping blocks 37 are symmetrically and slidably connected inside the fixing plate 35. A fifth spring 36 is fixedly connected to one side of the clamping block 37, and one end of the fifth spring 36 is fixedly connected to the fixing plate 35. The other side of the clamping block 37 extends to the inside of the through groove and is set to an inclined surface. A clamping groove 38 used to cooperate with the clamping block 37 is provided on the outer wall of the sleeve 7.

[0041] By means of the above technical solution, the motor 4 is started, and the reciprocating screw rod 5 is driven to rotate clockwise, so that the slider 6 is rotated clockwise, and the sleeve 7 is driven to rotate clockwise, so that the slot 38 is rotated clockwise. When the slot 38 rotates to the position of the block 37, the block 37 enters the slot 38 under the action of the fifth spring 36. As the reciprocating screw rod 5 continues to rotate, the inclined surface on one side of the block 37 presses against the slot 38. Under the extrusion of the slot 38, the block 37 moves and compresses the fifth spring 36. As a result, when the reciprocating screw rod 5 rotates clockwise, the slider 6 and the sleeve 7 are driven clockwise. Rotate to make the placement table 10 rotate clockwise, start the motor 4, drive the reciprocating screw 5 to rotate counterclockwise, make the slider 6 rotate counterclockwise, and drive the sleeve 7 to rotate counterclockwise. When the slot 38 rotates to the position of the block 37, under the action of the fifth spring 36, the block 37 enters the slot 38. As the reciprocating screw 5 continues to rotate counterclockwise, the straight surface on the other side of the block 37 presses against the slot 38 and cannot rotate. Therefore, when the reciprocating screw 5 rotates counterclockwise, it drives the slider 6 to move back and forth up and down, makes the sleeve 7 move back and forth up and down, and drives the placement table 10 to move back and forth up and down.

[0042] Specifically, the clamping unit includes four mounting grooves 12, and the four mounting grooves 12 are equidistantly arranged on the inner wall of the placement groove 11. The inner wall of the mounting groove 12 is slidably connected with an L-shaped plate 13, one side of the L-shaped plate 13 is fixedly connected with a second sliding shaft 14, the second sliding shaft 14 is slidably connected to the placement table 10, one end of the second sliding shaft 14 is fixedly connected with a first spring 15, one end of the first spring 15 is fixedly connected to the placement table 10, and the other side of the L-shaped plate 13 is fixedly connected with a protrusion 16, and the top and bottom of the protrusion 16 are both set to be inclined surfaces.

[0043] By means of the above technical scheme, the polycrystalline diamond composite sheet is placed in the placement groove 11 and pressed downward, the polycrystalline diamond composite sheet presses against the inclined surface at the top of the protrusion 16, pushing the protrusion 16 to move into the installation groove 12, driving the L-shaped plate 13 to move into the installation groove 12, and pressing the first spring 15. After the polycrystalline diamond composite sheet passes through the protrusion 16, the protrusion 16 is reset under the action of the first spring 15, and the top of the polycrystalline diamond composite sheet is limited by the protrusion 16, so that the polycrystalline diamond composite sheet is fixed in the placement groove 11. When the polycrystalline diamond composite sheet is taken out after immersion, the polycrystalline diamond composite sheet is pulled upward, and the polycrystalline diamond composite sheet presses against the inclined surface at the bottom of the protrusion 16. Similarly, the protrusion 16 is moved into the installation groove 12, thereby facilitating the removal of the polycrystalline diamond composite sheet.

[0044] Specifically, the inner wall of the protrusion 16 is fixedly connected to the first rotating shaft 17 , the outer wall of the first rotating shaft 17 is rotatably connected to the first pulley 18 , and the inner wall of the L-shaped plate 13 is provided with a plurality of water outlet grooves 23 at equal intervals.

[0045] Through the above technical solution, the friction between the polycrystalline diamond composite sheet and the protrusion 16 is reduced by setting the first pulley 18, which facilitates the polycrystalline diamond composite sheet to move through the protrusion 16. Through the provision of a plurality of water outlet troughs 23, it is convenient for the decobaltizing liquid to soak the side of the polycrystalline diamond composite sheet, preventing the decobaltizing liquid from contacting the polycrystalline diamond composite sheet due to the obstruction of the L-shaped plate 13.

[0046] Specifically, a plurality of limit plates 28 are equidistantly fixedly connected to the outer wall of the bracket 2 and located below the fixed plate 35. The limit plate 28 is arranged in a ring shape. A plurality of top blocks 30 are equidistantly slidably connected to the inner wall of the limit plate 28. One side of the plurality of top blocks 30 is arranged as an inclined surface. A fourth spring 29 is fixedly connected to the other side of the top block 30. One end of the fourth spring 29 is fixedly connected to the limit plate 28. A plurality of fixed shafts 32 are equidistantly fixedly connected to the outer wall of the placing table 10. A rotating plate 33 is rotatably connected to the outer walls of the plurality of fixed shafts 32. A spring sheet 34 is fixedly connected between the rotating plate 33 and the placing table 10. A positioning plate 31 is fixedly connected to the outer wall of the placing table 10 and located above the rotating plate 33. The elastic force of the fourth spring 29 is greater than the elastic force of the third spring 27.

[0047] With the above technical solution, when the sleeve 7 moves downward, the placement table 10 and the rotating plate 33 are driven to move downward. When the rotating plate 33 is close to the top block 30, due to the obstruction of the positioning plate 31, the rotating plate 33 is pressed against the inclined surface of the top of the top block 30. As the sleeve 7 continues to move downward, under the pressure of the top block 30, the placement table 10 slides on the first sliding shaft 8, pressing the third spring 27. When the third spring 27 is compressed to the limit, the rotating plate 33 pushes the top block 30 to move toward the inside of the limit plate 28, pressing the fourth spring 29. After the rotating plate 33 passes through the top block 30, under the action of the placement table 10's own gravity and the third spring 27, the placement table 10 is driven to vibrate downward rapidly. At the same time, under the action of the fourth spring 29, the top block 30 When the sleeve 7 moves upward, it drives the placement table 10 and the rotating plate 33 to move upward. When the rotating plate 33 is close to the top block 30, the rotating plate 33 rotates on the fixed shaft 32 under the pressure of the bottom surface of the top block 30, and the spring sheet 34 is pressed to facilitate the placement table 10 to pass through the limit plate 28 upward. Therefore, after the polycrystalline diamond composite sheet is soaked and decobalted, the placement table 10 is controlled to move to the top of the limit plate 28 first, and then the placement table 10 is controlled to move downward. Through the cooperation of several groups of top blocks 30, the placement table 10 is continuously vibrated downward for multiple times, which is convenient for shaking off the decobalting liquid adhered to the polycrystalline diamond composite sheet, so that the decobalting liquid can fall into the immersion box 1 for recycling, and avoid the decobalting liquid dripping into the outside to cause environmental pollution.

[0048] Specifically, the bottom of the L-shaped plate 13 is slidably connected to the third sliding shaft 19, the top of the third sliding shaft 19 is fixedly connected to the support plate 22, the four sides of the support plate 22 are set as inclined surfaces, the bottom of the third sliding shaft 19 is fixedly connected to the second limit block 21, the outer wall of the third sliding shaft 19 is sleeved with a second spring 20, the top of the second spring 20 is fixedly connected to the support plate 22, the bottom of the second spring 20 is fixedly connected to the L-shaped plate 13, the inner wall of the water outlet trough 23 is fixedly connected to the second rotating shaft 24, the outer wall of the second rotating shaft 24 is rotatably connected to the second pulley 25, and the outer wall of the second pulley 25 is fixedly connected to a plurality of convex rings 26 at equal intervals.

[0049] By means of the above technical scheme, the bottom of the polycrystalline diamond composite sheet is supported by the support plate 22, and the support area of ​​the polycrystalline diamond composite sheet by the support plate 22 is reduced by setting the surrounding areas of the support plate 22 as inclined surfaces, so as to prevent the polycrystalline diamond composite sheet in this part from being unable to contact the decobaltizing liquid due to the obstruction of the support plate 22. When the placement table 10 vibrates downward, the polycrystalline diamond composite sheet moves downward under the action of inertia, driving the support plate 22 to move downward, so that the third sliding shaft 19 slides in the L-shaped plate 13, and the second spring 20 is pressed, thereby avoiding the rigid collision between the polycrystalline diamond composite sheet and the L-shaped plate 13, causing damage to the polycrystalline diamond composite sheet. By setting the second pulley 25, the friction between the polycrystalline diamond composite sheet and the L-shaped plate 13 is reduced, so that the polycrystalline diamond composite sheet moves downward conveniently, and by setting a plurality of convex rings 26, the contact area between the second pulley 25 and the polycrystalline diamond composite sheet is reduced, so that the decobaltizing liquid can more conveniently soak the polycrystalline diamond composite sheet.

[0050] Specifically, the inner wall of the soaking box 1 is fixedly connected with a baffle 47, which is located below the limit plate 28. The baffle 47 is arranged in a ring shape and its outer wall is arranged in a ring-shaped arc surface. The inner wall of the mounting groove 12 is arranged in a slope. A plurality of drain grooves 45 are equidistantly provided at the bottom of the placing table 10, and the drain grooves 45 are communicated with the mounting groove 12.

[0051] Through the above technical scheme, after the polycrystalline diamond composite sheet is immersed in cobalt removal, the placement table 10 is first controlled to move to the top of the cobalt removal liquid and be located inside the baffle 47, and then the placement table 10 is controlled to rotate, driving the polycrystalline diamond composite sheet to rotate, thereby throwing out the cobalt removal liquid carried outside the polycrystalline diamond composite sheet, and the cobalt removal liquid is thrown out through the provided water outlet trough 23, so that the thrown out cobalt removal liquid enters the installation groove 12, and the cobalt removal liquid entering the installation groove 12 moves downward along the inclined surface of the inner wall of the installation groove 12, and passes through the drain trough 45 and drips back into the immersion box 1.

[0052] Specifically, the bottom of the inner wall of the immersion box 1 is fixedly connected with a fourth sliding shaft 39, and the outer wall of the fourth sliding shaft 39 is slidably connected with a piston plate 41, the piston plate 41 is slidably connected to the immersion box 1, the outer wall of the fourth sliding shaft 39 is sleeved with a sixth spring 40, the top of the sixth spring 40 is fixedly connected to the piston plate 41, the bottom of the sixth spring 40 is fixedly connected to the immersion box 1, the top of the piston plate 41 is set as an annular inclined surface, the inner wall of the piston plate 41 is fixedly connected with a filter plate 43, the inner wall of the immersion box 1 is provided with an annular groove 42, the annular groove 42 is located below the baffle 47, the bottom of the annular groove 42 and the bottom of the piston plate 41 are in the same horizontal plane, the bottom of the first limit block 9 is rotatably connected with a rotating block 46, and the bottom of the rotating block 46 contacts with the top of the piston plate 41.

[0053] Through the above technical solution, the horizontal plane of the decobaltizing liquid in the immersion box 1 is lower than the annular groove 42. When the sleeve 7 moves downward, the rotating block 46 is driven to move downward, and then the piston plate 41 is pushed downward to compress the sixth spring 40. The decobaltizing liquid in the immersion box 1 is filtered through the filter plate 43. With the squeezing of the piston plate 41, the decobaltizing liquid passes through the filter plate 43 and flows to the top of the piston plate 41, while the debris of the polycrystalline diamond composite sheet dropped due to immersion remains under the piston plate 41, thereby preventing the debris of the polycrystalline diamond composite sheet dropped due to immersion from adhering to the polycrystalline diamond composite sheet again. After the composite sheet is soaked and decobalted, the control sleeve 7 moves upward, driving the rotating block 46 to move upward, and the piston plate 41 loses the push of the rotating block 46. Under the action of the sixth spring 40, the piston plate 41 moves upward, and the decobaltizing liquid passes through the filter plate 43 and flows to the bottom of the piston plate 41, while the debris of the polycrystalline diamond composite sheet dropped due to soaking remains above the piston plate 41 and slides downward along the inclined surface of the top of the piston plate 41. When the piston plate 41 is fully reset, it is flush with the annular groove 42, and the debris of the polycrystalline diamond composite sheet dropped due to soaking passes through the annular groove 42 and falls to the bottom of the piston plate 41.

[0054] Specifically, a plurality of stirring blades 44 are fixedly connected to the bottom of the placement table 10 at equal intervals.

[0055] According to the above technical solution, the plurality of stirring blades 44 are provided, and when the placement table 10 rotates in the decobaltizing liquid, the decobaltizing liquid is stirred to make the decobaltizing liquid evenly mixed to prevent precipitation.

[0056] A method for removing cobalt from a polycrystalline diamond composite sheet cobalt removal device, the method for removing cobalt adopts the above-mentioned polycrystalline diamond composite sheet cobalt removal device, and the steps of the method for removing cobalt are as follows:

[0057] S1: Add decobaltizing liquid into the immersion box 1, and make the level of the decobaltizing liquid lower than the annular groove 42, put the polycrystalline diamond compact into the placement groove 11 and press it downward, cooperate with the clamping unit, so that the polycrystalline diamond compact is fixed in the placement groove 11;

[0058] S2: Control the placement table 10 to move downward into the decobalting solution to immerse the polycrystalline diamond compact for decobalting, and control the placement table 10 immersed in the decobalting solution to rotate so that bubbles generated by chemical reactions outside the polycrystalline diamond compact are separated from the polycrystalline diamond compact;

[0059] S3: After soaking and decobalting, the placement table 10 is controlled to rotate to throw out the decobalting liquid carried outside the polycrystalline diamond composite sheet, and then the placement table 10 is controlled to move above the limit plate 28, and then the placement table 10 is controlled to move downward, and several groups of top blocks 30 are cooperated to make the placement table 10 vibrate downward continuously for multiple times to shake off the decobalting liquid adhered to the polycrystalline diamond composite sheet.

[0060] When in use, the decobaltizing liquid is loaded into the immersion box 1, and the level of the decobaltizing liquid is lower than the annular groove 42, the polycrystalline diamond composite sheet is placed in the placement groove 11 and pressed downward, the polycrystalline diamond composite sheet is pressed against the inclined surface of the top of the protrusion 16, and the protrusion 16 is pushed to move into the installation groove 12, driving the L-shaped plate 13 to move into the installation groove 12, pressing the first spring 15, and after the polycrystalline diamond composite sheet passes through the protrusion 16, the protrusion 16 is reset under the action of the first spring 15, the top of the polycrystalline diamond composite sheet is limited by the protrusion 16, and the bottom of the polycrystalline diamond composite sheet is supported by the support plate 22, so that the polycrystalline diamond composite sheet is fixed in the placement groove 11, and the first pulley 18 is provided to reduce the contact between the polycrystalline diamond composite sheet and the protrusion 16. The friction force facilitates the polycrystalline diamond composite sheet to move through the protrusion 16. The multiple water outlet grooves 23 are arranged to facilitate the decobaltizing liquid to soak the side of the polycrystalline diamond composite sheet, and prevent the decobaltizing liquid from contacting the polycrystalline diamond composite sheet due to the obstruction of the L-shaped plate 13. By setting the support plate 22 as an inclined surface all around, the support area of ​​the support plate 22 for the polycrystalline diamond composite sheet is reduced, and the polycrystalline diamond composite sheet in this part cannot be contacted with the decobaltizing liquid due to the obstruction of the support plate 22. The motor 4 is started to drive the reciprocating screw rod 5 to rotate counterclockwise, the slider 6 to rotate counterclockwise, and the sleeve 7 to rotate counterclockwise. When the slot 38 rotates to the position of the block 37, the block 37 enters the slot 38 under the action of the fifth spring 36. As the reciprocating wire The rod 5 continues to rotate counterclockwise, and the straight surface on the other side of the block 37 is pressed against the slot 38 and cannot rotate. Therefore, when the reciprocating screw rod 5 rotates counterclockwise, it drives the slider 6 to move up and down reciprocatingly, and the sleeve 7 moves up and down reciprocatingly, and drives the placement table 10 to move up and down reciprocatingly. When the slider 6 moves to the bottom, it drives the sleeve 7 and the placement table 10 to move downward. When the sleeve 7 moves downward, it drives the rotating block 46 to move downward, pushing the piston plate 41 to move downward, compressing the sixth spring 40, and filtering the decobalt liquid in the immersion box 1 through the filter plate 43. With the squeezing of the piston plate 41, the decobalt liquid passes through the filter plate 43 and flows to the top of the piston plate 41 to soak the polycrystalline diamond composite sheet, and the polycrystalline diamond composite sheet The debris dropped by the soaking remains under the piston plate 41, thereby To prevent the debris dropped from the polycrystalline diamond composite sheet due to immersion from adhering to the polycrystalline diamond composite sheet again, when the polycrystalline diamond composite sheet is immersed in the decobaltizing liquid, the motor 4 is started to drive the reciprocating screw 5 to rotate clockwise, so that the slider 6 rotates clockwise, drives the sleeve 7 to rotate clockwise, and makes the slot 38 rotate clockwise. When the slot 38 rotates to the position of the block 37, under the action of the fifth spring 36, the block 37 enters the slot 38. As the reciprocating screw 5 continues to rotate, the inclined surface on one side of the block 37 presses against the slot 38. Under the extrusion of the slot 38, the block 37 moves into the fixed plate 35, pressing the fifth spring 36. Therefore, when the reciprocating screw 5 rotates clockwise, the slider 6 and the sleeve 7 are driven to rotate clockwise, so that the placement table 10 rotates clockwise.The polycrystalline diamond composite sheet is driven to rotate in the decobalting liquid. By continuously rotating the polycrystalline diamond composite sheet, the bubbles generated by the chemical reaction of the polycrystalline diamond composite sheet can be separated from the polycrystalline diamond composite sheet to prevent the decobalting effect of the polycrystalline diamond composite sheet from being affected by the obstruction of the bubbles. The decobalting liquid is stirred by the plurality of stirring blades 44 when the placement table 10 rotates in the decobalting liquid to make the decobalting liquid evenly mixed to prevent precipitation. After the polycrystalline diamond composite sheet is immersed in the decobalting liquid, the control sleeve 7 moves upward to drive the rotating block 46 to move upward. The piston plate 41 loses the push of the rotating block 46. Under the action of the sixth spring 40, the piston plate 41 moves upward, and the decobalting liquid passes through the filter plate 43 and flows to the bottom of the piston plate 41, while the polycrystalline The debris dropped by the diamond composite sheet due to immersion remains above the piston plate 41 and slides downward along the inclined surface of the top of the piston plate 41. When the piston plate 41 is fully reset, it is flush with the annular groove 42. The debris dropped by the polycrystalline diamond composite sheet due to immersion passes through the annular groove 42 and falls to the bottom of the piston plate 41. When the placement table 10 moves to the top of the decobalt liquid and is located inside the baffle 47, the placement table 10 is controlled to rotate, driving the polycrystalline diamond composite sheet to rotate, thereby throwing out the decobalt liquid carried outside the polycrystalline diamond composite sheet, and the decobalt liquid thrown out enters the installation groove 12 through the provided water outlet groove 23. The decobalt liquid entering the installation groove 12 moves downward along the inclined surface of the inner wall of the installation groove 12, and passes through the drain groove 45 and drips back into the immersion box 1. Then, the sleeve 7 is controlled to move upward, driving the placement table 10 and the rotating plate 33 to move upward. When the rotating plate 33 is close to the top block 30, the rotating plate 33 is squeezed on the fixed shaft 32 to press the spring sheet 34 to facilitate the placement table 10 to pass through the limit plate 28 upward. Then, the sleeve 7 is controlled to move downward, driving the placement table 10 and the rotating plate 33 to move downward. When the rotating plate 33 is close to the top block 30, the rotating plate 33 is blocked by the positioning plate 31, and the inclined surface of the top of the top block 30 is pressed. As the sleeve 7 continues to move downward, the placement table 10 slides on the first sliding shaft 8 under the pressure of the top block 30, pressing the third spring 27. When the third spring 27 is compressed to the limit, the rotating plate 33 pushes the top block 30 toward the limit plate 28. The fourth spring 29 is pressed against the inner part of the rotating plate 33. After the rotating plate 33 passes through the top block 30, the placing table 10 is driven to vibrate downward rapidly under the action of its own gravity and the third spring 27. Thus, through the cooperation of several groups of top blocks 30, the placing table 10 is continuously vibrated downward for multiple times, so that the decobalt liquid adhered to the polycrystalline diamond composite sheet can be shaken off downward, so that the decobalt liquid can fall into the immersion box 1 for recycling, and the decobalt liquid is prevented from dripping into the outside to cause environmental pollution. When the placing table 10 vibrates downward, the polycrystalline diamond composite sheet is moved downward under the action of inertia, driving the supporting plate 22 to move downward, so that the third sliding shaft 19 slides in the L-shaped plate 13, and the second spring 20 is pressed against, thereby avoiding the rigid collision between the polycrystalline diamond composite sheet and the L-shaped plate 13.The polycrystalline diamond composite sheet is damaged. The friction between the polycrystalline diamond composite sheet and the L-shaped plate 13 is reduced by setting the second pulley 25, which facilitates the downward movement of the polycrystalline diamond composite sheet. The contact area between the second pulley 25 and the polycrystalline diamond composite sheet is reduced by setting a plurality of convex rings 26, which makes it easier for the decobalting liquid to soak the polycrystalline diamond composite sheet. After shaking off the decobalting liquid adhering to the polycrystalline diamond composite sheet, the placement table 10 is controlled to move again to the top of the limit plate 28, and the polycrystalline diamond composite sheet is pulled upward. The polycrystalline diamond composite sheet is pressed against the inclined surface at the bottom of the protrusion 16. Similarly, the protrusion 16 is moved into the mounting groove 12, thereby facilitating the removal of the polycrystalline diamond composite sheet.

[0061] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for removing cobalt from a polycrystalline diamond composite sheet, characterized in that: The invention comprises a soaking box (1), wherein the top of the soaking box (1) is fixedly connected to a bracket (2), the top of the bracket (2) is fixedly connected to a top plate (3), the top of the top plate (3) is fixedly connected to a motor (4), the output end of the motor (4) passes through the top plate (3) and is fixedly connected to a reciprocating screw (5), the outer wall of the reciprocating screw (5) is connected to a slider (6) via a screw nut pair, the bottom of the slider (6) is fixedly connected to a sleeve (7), the outer wall of the bracket (2) is provided with an adjustment component used in conjunction with the sleeve (7), and the sleeve (7) The bottom of the first sliding shaft (8) is fixedly connected to a first sliding shaft (8), the bottom of the first sliding shaft (8) is fixedly connected to a first limiting block (9), the outer wall of the first sliding shaft (8) is slidably connected to a placement platform (10), the outer wall of the first sliding shaft (8) is sleeved with a third spring (27), the top of the third spring (27) is fixedly connected to the sleeve (7), the bottom of the third spring (27) is fixedly connected to the placement platform (10), a plurality of placement grooves (11) are equidistantly provided inside the placement platform (10), and a clamping unit is provided inside the placement groove (11); The adjustment assembly comprises a fixing plate (35), the fixing plate (35) being fixedly mounted on the outer wall of the bracket (2), a through slot being provided inside the fixing plate (35), the sleeve (7) being fitted with the inner wall of the through slot, two clamping blocks (37) being symmetrically slidably connected inside the fixing plate (35), a fifth spring (36) being fixedly connected to one side of the clamping block (37), one end of the fifth spring (36) being fixedly connected to the fixing plate (35), the other side of the clamping block (37) extending to the inside of the through slot and being arranged as an inclined surface, and a clamping slot (38) being used in conjunction with the clamping block (37) being provided on the outer wall of the sleeve (7); The clamping unit comprises four mounting grooves (12), the four mounting grooves (12) are equidistantly arranged on the inner wall of the placement groove (11), the inner wall of the mounting groove (12) is slidably connected to an L-shaped plate (13), one side of the L-shaped plate (13) is fixedly connected to a second sliding shaft (14), the second sliding shaft (14) is slidably connected to the placement table (10), one end of the second sliding shaft (14) is fixedly connected to a first spring (15), one end of the first spring (15) is fixedly connected to the placement table (10), the other side of the L-shaped plate (13) is fixedly connected to a protrusion (16), the top and bottom of the protrusion (16) are both arranged as inclined surfaces; When the polycrystalline diamond composite sheet is immersed in the decobaltizing liquid, the reciprocating screw (5) is controlled to rotate clockwise, and the adjusting component is cooperated to make the slider (6) rotate along with the clockwise rotation of the reciprocating screw (5), thereby driving the placement table (10) to rotate, so that the polycrystalline diamond composite sheet rotates in the decobaltizing liquid. By continuously rotating the polycrystalline diamond composite sheet, bubbles generated by chemical reactions outside the polycrystalline diamond composite sheet can be separated from the polycrystalline diamond composite sheet, thereby preventing the decobaltizing effect of the polycrystalline diamond composite sheet from being affected by the obstruction of the bubbles.

2. A polycrystalline diamond compact decobaltization device according to claim 1, characterized in that: The inner wall of the protrusion (16) is fixedly connected to a first rotating shaft (17), the outer wall of the first rotating shaft (17) is rotatably connected to a first pulley (18), and the inner wall of the L-shaped plate (13) is provided with a plurality of water outlet grooves (23) at equal intervals.

3. A polycrystalline diamond compact decobaltization device according to claim 2, characterized in that: The outer wall of the bracket (2) is equidistantly fixedly connected to a plurality of limit plates (28) located below the fixed plate (35); the limit plates (28) are arranged in a ring shape; the inner wall of the limit plates (28) is equidistantly slidably connected to a plurality of top blocks (30); one side of the plurality of top blocks (30) is arranged as an inclined surface; the other side of the top blocks (30) is fixedly connected to a fourth spring (29); one end of the fourth spring (29) is fixedly connected to the limit plate (28); the outer wall of the placement table (10) is equidistantly fixedly connected to a plurality of fixed shafts (32); the outer walls of the plurality of fixed shafts (32) are rotatably connected to a rotating plate (33); a spring sheet (34) is fixedly connected between the rotating plate (33) and the placement table (10); the outer wall of the placement table (10) is fixedly connected to a positioning plate (31) located above the rotating plate (33); the elastic force of the fourth spring (29) is greater than the elastic force of the third spring (27).

4. A polycrystalline diamond compact decobaltizing device according to claim 3, characterized in that: The bottom of the L-shaped plate (13) is slidably connected to a third sliding shaft (19), the top of the third sliding shaft (19) is fixedly connected to a support plate (22), the four sides of the support plate (22) are all arranged as inclined surfaces, the bottom of the third sliding shaft (19) is fixedly connected to a second limit block (21), the outer wall of the third sliding shaft (19) is sleeved with a second spring (20), the top of the second spring (20) is fixedly connected to the support plate (22), the bottom of the second spring (20) is fixedly connected to the L-shaped plate (13), the inner wall of the water outlet trough (23) is fixedly connected to a second rotating shaft (24), the outer wall of the second rotating shaft (24) is rotatably connected to a second pulley (25), and the outer wall of the second pulley (25) is fixedly connected to a plurality of convex rings (26) at equal intervals.

5. The device for removing cobalt from a polycrystalline diamond compact according to claim 4, characterized in that: The inner wall of the soaking box (1) is fixedly connected with a baffle (47), the baffle (47) is arranged in a ring shape and its outer wall is arranged in a ring-shaped arc surface, the inner wall of the mounting groove (12) is arranged in an inclined surface, and a plurality of drain grooves (45) are equidistantly provided at the bottom of the placement table (10), and the drain grooves (45) are communicated with the mounting groove (12).

6. A polycrystalline diamond compact decobaltizing device according to claim 5, characterized in that: A fourth sliding shaft (39) is fixedly connected to the bottom of the inner wall of the soaking box (1), a piston plate (41) is slidably connected to the outer wall of the fourth sliding shaft (39), the piston plate (41) is slidably connected to the soaking box (1), a sixth spring (40) is sleeved on the outer wall of the fourth sliding shaft (39), the top of the sixth spring (40) is fixedly connected to the piston plate (41), the bottom of the sixth spring (40) is fixedly connected to the soaking box (1), the top of the piston plate (41) is arranged as an annular inclined surface, the inner wall of the piston plate (41) is fixedly connected to a filter plate (43), the inner wall of the soaking box (1) is provided with an annular groove (42), the bottom of the annular groove (42) and the bottom of the piston plate (41) are in the same horizontal plane, and the bottom of the first limit block (9) is rotatably connected to a rotating block (46).

7. A polycrystalline diamond compact decobaltizing device according to claim 6, characterized in that: A plurality of stirring blades (44) are fixedly connected at equal intervals to the bottom of the placement table (10).

8. A method for removing cobalt from a polycrystalline diamond compact cobalt removal device, the method for removing cobalt using the polycrystalline diamond compact cobalt removal device according to claim 7, characterized in that: The steps of the cobalt removal method are as follows: S1: a decobaltizing liquid is placed in the immersion box (1), and the level of the decobaltizing liquid is lower than the annular groove (42), a polycrystalline diamond composite sheet is placed in the placement groove (11) and pressed downward, and a clamping unit is used to fix the polycrystalline diamond composite sheet in the placement groove (11); S2: Controlling the placement table (10) to move downward into the decobalting liquid to immerse the polycrystalline diamond composite sheet for decobalting, and controlling the placement table (10) immersed in the decobalting liquid to rotate so that bubbles generated by chemical reactions outside the polycrystalline diamond composite sheet are separated from the polycrystalline diamond composite sheet; S3: After soaking and decobalting, the placement table (10) is controlled to rotate to throw out the decobalting liquid carried by the polycrystalline diamond composite sheet, and then the placement table (10) is controlled to move above the limit plate (28), and then the placement table (10) is controlled to move downward, and the placement table (10) is vibrated downward continuously multiple times in coordination with a plurality of groups of top blocks (30) to shake off the decobalting liquid adhered to the polycrystalline diamond composite sheet.

Images