Diamond synthesis device and method for processing diamond with high thermal stability function

Abstract

The present invention discloses a diamond synthesis device and a method for processing diamonds with high thermal stability, and relates to the field of artificial diamond preparation equipment. When the adjacent pressing modules of the pressing machine are connected, the hinge beams between the adjacent positioning seats are staggered and overlapped with each other, and then the inner pin body in the connecting pin is inserted into the connecting holes on the two sets of staggered hinge beams, and then the expansion sleeves are inserted into both ends of the inner pin body. At this time, the expansion sleeve expands outward under the internal support of the inner pin body, so that the outer surface of the expansion sleeve expands and abuts against the inner wall of the connecting hole, locking and fixing the hinge beam; thereby, the gap between the connecting pin and the connecting hole can be eliminated through the cooperation of the inner pin body and the expansion sleeve, preventing the pressing module from being displaced due to the need to eliminate the gap when the pressing machine is working, thereby affecting the precision of the pressing machine, thereby improving the precision of the pressing machine and the pressing synthesis effect of diamonds.

Description

Technical Field

[0001] The present invention belongs to the field of artificial diamond preparation equipment, and in particular relates to a diamond synthesis device and a method for processing diamond with high thermal stability function. Background Art

[0002] Synthetic diamond is an artificially synthesized diamond, formed by sintering diamond powder with a small amount of binder under high temperature and high pressure. It features high wear resistance, strong impact toughness, good thermal stability, and a dense and uniform structure. It is widely used in the manufacture of oil and geological drill bits, machining tools, and gemstone processing. For example, Chinese patent CN103649014B discloses a method for improving the thermal stability of polycrystalline diamond (PCD), using high-thermal-stability diamond to produce saw blades.

[0003] Currently, the six-sided press is the most widely used equipment for producing artificial diamonds in China. In existing technologies, the six pressing modules of a six-sided press are connected by hinge beams, connecting holes, and connecting pins. When the connecting pins are connected to the connecting holes, if the connecting pins are large in diameter, they are difficult to insert into the holes, making the connection and disassembly of the pressing modules very difficult. On the other hand, if the connecting pins are small in diameter, there is a gap between the pins and the holes. This gap is eliminated during subsequent pressing operations after the force is applied, resulting in a large cumulative error in the press, which reduces the press precision and the pressing process. Summary of the Invention

[0004] In response to the problems in the related art, the present invention proposes a diamond synthesis device and a method for processing diamonds with high thermal stability to overcome the above-mentioned technical problems existing in the existing related art.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a diamond synthesis device, comprising a top pressing machine, wherein the top pressing machine comprises a plurality of top pressing modules, wherein the plurality of top pressing modules are sequentially connected by connecting pins to form a multi-faceted top pressing structure;

[0007] The top pressure module includes a positioning seat, and a plurality of hinge beams are fixedly mounted on the outer ring of the positioning seat. The outer ends of the hinge beams are provided with connection holes. The hinge beams between adjacent positioning seats are staggered and overlapped with each other, and the connecting pins are inserted into the connection holes on the two staggered hinge beams to pin-connect the two staggered hinge beams.

[0008] The connecting pin includes an inner pin body and an expansion sleeve, wherein the inner pin body is inserted into the connecting hole, and the expansion sleeve is inserted into the surface of the inner pin body. When the expansion sleeve is inserted, it can expand outward under the internal support of the inner pin body, so that the outer surface of the expansion sleeve expands and abuts against the inner wall of the connecting hole;

[0009] A hydraulic telescopic shaft is fixedly mounted on the inner side of the positioning seat, and a top hammer is fixedly mounted on the telescopic end of the hydraulic telescopic shaft. A plurality of the hydraulic telescopic shafts can drive a plurality of top hammers to move toward the center position of the top press.

[0010] Furthermore, both ends of the inner pin body are provided with a conical structure whose diameter gradually decreases from the middle to the two ends, the inner ring of the expansion sleeve is provided with a conical groove corresponding to the conical structure on the surface of the inner pin body, and the side wall of the expansion sleeve is also provided with multiple open grooves arranged radially.

[0011] Furthermore, screws are fixedly installed at both ends of the inner pin body, end plates are fixedly installed at the end of the expansion sleeve, the end plates are plugged into the screws, and nuts are threadedly installed on the screws, and the nuts can tighten the end plates to abut against the surface of the hinge beam.

[0012] Furthermore, the hydraulic telescopic shaft includes a hydraulic cylinder, a piston is slidably installed inside the hydraulic cylinder, the piston divides the interior of the hydraulic cylinder into an extension chamber and a contraction chamber, a telescopic shaft is fixedly installed on one side of the contraction chamber of the piston, one end of the telescopic shaft extends to the outside of the hydraulic cylinder and is fixedly installed with the top hammer.

[0013] Furthermore, an extension chamber inlet and outlet oil nozzle and a contraction chamber inlet and outlet oil nozzle are fixedly mounted on the outer wall of the hydraulic cylinder, one end of the extension chamber inlet and outlet oil nozzle is communicated with the external hydraulic system, and the other end of the extension chamber inlet and outlet oil nozzle is communicated with the extension chamber, a liquid guide channel is opened inside the side wall of the hydraulic cylinder, one end of the liquid guide channel is communicated with the contraction chamber, the other end of the liquid guide channel is communicated with the inner end of the contraction chamber inlet and outlet oil nozzle, and the outer end of the contraction chamber inlet and outlet oil nozzle is communicated with the external hydraulic system.

[0014] Furthermore, the end face of the top hammer is provided with a top pressure plane, and the outer ring of the top hammer is provided with a sealing inclined surface.

[0015] Furthermore, a buffer protection mechanism is fixedly installed on the top hammer, and the buffer protection mechanism includes a protection boss, which is fixedly installed on the rear end of the top hammer. The outer ring of the protection boss is slidably installed with multiple inclined buffer shafts, and the outer end of the buffer shaft is fixedly installed with a buffer plate. The outer ring of the buffer shaft is provided with a buffer spring, one end of the buffer spring abuts against the surface of the protection boss, and the other end of the buffer spring abuts against the inner side of the buffer plate.

[0016] Furthermore, a plurality of buffer cavities corresponding to the buffer shafts are opened inside the protective boss, the inner end of the buffer shaft extends into the buffer cavity and is fixedly installed with a hydraulic plug, and the buffer cavity is filled with hydraulic oil located below the hydraulic plug.

[0017] Furthermore, a plurality of branch flow channels corresponding to the buffer cavities are formed inside the protective boss, one end of each branch flow channel is connected to the bottom end of the corresponding buffer cavity, and a main flow channel is formed inside the telescopic shaft, one end of each main flow channel is connected to the plurality of branch flow channels in the protective boss, and the other end of each main flow channel is connected to the contraction cavity;

[0018] A valve assembly is installed at the inlet end of the branch flow channel. The hydraulic plug can abut and open the valve assembly when it is pressed downward to pump the hydraulic oil in the buffer cavity into the contraction cavity through the branch flow channel and the main flow channel.

[0019] The present invention also discloses a method for processing diamond with high thermal stability function, which specifically comprises the following steps:

[0020] First, multiple positioning seats on the top press are fixedly connected in sequence through the cooperation of hinge beams, connecting holes and connecting pins to form a multi-faceted top press structure; when connecting, the hinge beams between adjacent positioning seats are staggered and overlapped with each other, and then the inner pin bodies in the connecting pins are inserted into the connecting holes on the two sets of staggered hinge beams, and then expansion sleeves are inserted into both ends of the inner pin bodies. At this time, the expansion sleeves expand outwards under the internal support of the inner pin bodies, so that the outer surface of the expansion sleeves expands and abuts against the inner wall of the connecting hole, thereby locking and fixing the hinge beams;

[0021] Afterwards, the pyrophyllite block wrapped with the raw material for preparing high thermal stability diamond is placed on the top surface of the top hammer at the bottom, and then multiple hydraulic telescopic shafts drive multiple top hammers to move synchronously toward the center position of the top press, so that the multiple top hammers cooperate to squeeze the pyrophyllite and the diamond raw material inside, so that the diamond raw material generates high thermal stability diamond under the action of high pressure.

[0022] Furthermore, the raw materials include graphite powder, catalyst and diamond, wherein the catalyst includes a mixture of iron, nickel, cobalt, manganese and silicon, the diamond synthesis pressure is 5300-5700 MPa, the synthesis temperature is 1320-1380° C., and the synthesis time is 10-25 minutes.

[0023] The present invention has the following beneficial effects:

[0024] 1. In the present invention, when the adjacent jacking modules of the jacking machine are connected, the hinge beams between the adjacent positioning seats are staggered and overlapped with each other, and then the inner pin body in the connecting pin is inserted into the connecting holes on the two sets of staggered hinge beams, and then the expansion sleeve is inserted into both ends of the inner pin body. At this time, the expansion sleeve expands outward under the internal support of the inner pin body, so that the outer surface of the expansion sleeve expands and abuts against the inner wall of the connecting hole, locking and fixing the hinge beam; thereby, the gap between the connecting pin and the connecting hole can be eliminated through the cooperation of the inner pin body and the expansion sleeve, preventing the jacking module from being displaced due to the need to eliminate the gap cooperation during the subsequent operation of the jacking machine, thereby affecting the accuracy of the jacking machine, thereby improving the accuracy of the jacking machine and the jacking synthesis effect of the diamond.

[0025] 2. In the present invention, both ends of the inner pin body are provided with a conical structure whose diameter gradually decreases from the middle to the two ends, and at the same time, the inner ring of the expansion sleeve is provided with a conical groove corresponding to the conical structure on the surface of the inner pin body. When the expansion sleeve is gradually inserted into the surface of the inner pin body, the inner diameter of the conical groove is larger than the outer diameter of the corresponding position of the conical structure on the surface of the inner pin body, so that the expansion sleeve will not be abutted and expanded by the inner pin body, so that a gap can be left between the expansion sleeve and the connecting hole, so that the expansion sleeve can be inserted into the connecting hole quickly and labor-savingly. When the expansion sleeve is about to be completely inserted into the surface of the inner pin body, the inner diameter of the conical groove is smaller than the outer diameter of the corresponding position of the conical structure on the surface of the inner pin body, so that the expansion sleeve can expand outward under the abutment of the conical structure on the surface of the inner pin body when plugged in, thereby making the expansion sleeve abut against the connecting hole. On the inner wall of the connecting hole, in order to eliminate the gap between the expansion sleeve and the connecting hole, through the cooperation of the conical structure and the conical groove, not only can the inner pin body abut and expand the expansion sleeve to achieve a gap-free and stable connection between the connecting pin and the connecting hole, but the expansion sleeve can also expand and abut against the inner wall of the connecting hole only when it is about to be inserted into place, thereby reducing the friction resistance when the expansion sleeve is inserted, making the insertion process of the connecting pin and the connecting hole more convenient and labor-saving; correspondingly, when it is necessary to disassemble and remove the connecting pin, it is only necessary to pull the expansion sleeve slightly outward, so that the inner pin body will no longer abut and stretch the expansion sleeve. At this time, the expansion sleeve will reset and shrink under the action of its own elasticity and separate from the inner wall of the connecting hole, thereby reducing the friction resistance when the expansion sleeve is removed, making the disassembly process of the connecting pin more convenient and labor-saving.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, they can also obtain drawings based on these drawings without paying any creative work.

[0028] Figure 1This is one of the three-dimensional structural diagrams of the diamond synthesis device of the present invention;

[0029] Figure 2 This is the second schematic diagram of the three-dimensional structure of the diamond synthesis device of the present invention;

[0030] Figure 3 For the present invention Figure 2 A local enlarged structural diagram of point A;

[0031] Figure 4 This is the third schematic diagram of the three-dimensional structure of the diamond synthesis device of the present invention;

[0032] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at point B;

[0033] Figure 6 This is the fourth schematic diagram of the three-dimensional structure of the diamond synthesis device of the present invention;

[0034] Figure 7 For the present invention Figure 6 A schematic diagram of the partially enlarged structure at point C;

[0035] Figure 8 This is the fifth schematic diagram of the three-dimensional structure of the diamond synthesis device of the present invention;

[0036] Figure 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at D;

[0037] Figure 10 For the present invention Figure 8 Schematic diagram of the local enlarged structure at F.

[0038] In the figure: 1. Press machine; 11. Positioning seat; 12. Hinge beam; 13. Connecting hole; 2. Connecting pin; 21. Expansion sleeve; 22. Opening groove; 23. End plate; 24. Nut; 25. Screw; 26. Inner pin body; 3. Hydraulic telescopic shaft; 31. Hydraulic cylinder; 32. Telescopic shaft; 33. Piston; 34. Inlet and outlet nozzles of extension chamber; 35. Inlet and outlet nozzles of contraction chamber; 36. Extension chamber; 37. Contraction chamber; 38. Liquid guide channel; 4. Top hammer; 5. Buffer protection mechanism; 51. Protective boss; 52. Buffer shaft; 53. Buffer chamber; 54. Branch channel; 55. Main channel; 56. Buffer plate; 57. Buffer spring; 58. Hydraulic plug; 59. Push rod; 510. Sliding seat; 511. Pressure spring; 512. Slide groove; 513. Slider; 514. Sealing plug; 515. Return spring. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0041] Example 1

[0042] See also Figure 1-Figure 5 As shown, the present invention is a diamond synthesis device, including a top pressing machine 1, which includes a plurality of top pressing modules. The plurality of top pressing modules are sequentially connected by connecting pins 2 to form a multi-faceted top pressing structure; the top pressing module includes a positioning seat 11, and the outer ring of the positioning seat 11 is fixedly mounted with a plurality of hinge beams 12. The outer ends of the hinge beams 12 are provided with connecting holes 13. The hinge beams 12 between adjacent positioning seats 11 are staggered and overlapped with each other, and the connecting pins 2 are inserted into the connecting holes 13 on two staggered hinge beams 12 to pin-connect the two staggered hinge beams 12.

[0043] The connecting pin 2 includes an inner pin body 26 and an expansion sleeve 21. The inner pin body 26 is inserted into the connecting hole 13, and the expansion sleeve 21 is inserted into the surface of the inner pin body 26. When the expansion sleeve 21 is inserted, it can expand outward under the internal support of the inner pin body 26, so that the outer surface of the expansion sleeve 21 expands and abuts against the inner wall of the connecting hole 13; a hydraulic telescopic shaft 3 is fixedly installed on the inner side surface of the positioning seat 11, and a top hammer 4 is fixedly installed on the telescopic end of the hydraulic telescopic shaft 3. Multiple hydraulic telescopic shafts 3 can drive multiple top hammers 4 to move toward the center position of the top press 1.

[0044] Among them, there are six top-pressing modules. When the diamond synthesis device is used, the multiple positioning seats 11 on the top press 1 are first fixedly connected in sequence through the cooperation of the hinge beams 12, the connecting holes 13 and the connecting pins 2 to form a multi-faceted top-pressing structure; when connected, the hinge beams 12 between adjacent positioning seats 11 are staggered and overlapped with each other, and then the inner pin bodies 26 in the connecting pins 2 are inserted into the connecting holes 13 on the two groups of staggered hinge beams 12, and then the expansion sleeves 21 are inserted into both ends of the inner pin bodies 26. At this time, the expansion sleeves 21 are pushed forward under the internal support of the inner pin bodies 26. The external expansion is expanded so that the outer surface of the expansion sleeve 21 expands and abuts against the inner wall of the connecting hole 13, and the hinge beam 12 is locked and fixed, and it is repeated in sequence until the locking installation of the six top pressing modules is completed to form a six-sided top pressing structure; then the talc block wrapped with the diamond preparation raw material is placed on the top surface of the top hammer 4 at the bottom, and then multiple hydraulic telescopic shafts 3 drive multiple top hammers 4 to move synchronously toward the center position of the top press 1, so that multiple top hammers 4 cooperate to squeeze the talc and the diamond raw material inside, so that the diamond raw material generates diamonds under the action of high pressure.

[0045] The cooperation between the inner pin body 26 and the expansion sleeve 21 can eliminate the gap between the connecting pin 2 and the connecting hole 13, preventing the pressing module from being displaced due to the need to eliminate the gap when the subsequent pressing machine 1 is working, thereby affecting the accuracy of the pressing machine 1, thereby improving the accuracy of the pressing machine 1 and the diamond pressing synthesis effect.

[0046] Example 2

[0047] See also Figure 1-Figure 5 As shown, the difference between this embodiment and the above embodiment is that both ends of the inner pin body 26 are provided with a truncated cone structure with a diameter gradually decreasing from the middle to the two ends, the inner ring of the expansion sleeve 21 is provided with a truncated cone groove corresponding to the truncated cone structure on the surface of the inner pin body 26, and the side wall of the expansion sleeve 21 is also provided with a plurality of radially arranged open grooves 22;

[0048] When the expansion sleeve 21 is gradually inserted into the surface of the inner pin body 26, the inner diameter of the conical groove is larger than the outer diameter of the corresponding position of the conical structure on the surface of the inner pin body 26, so that the expansion sleeve 21 will not be abutted and expanded by the inner pin body 26, so that a gap can be left between the expansion sleeve 21 and the connecting hole 13, so that the expansion sleeve 21 can be inserted into the connecting hole 13 quickly and effortlessly. When the expansion sleeve 21 is about to be completely inserted into the surface of the inner pin body 26, the inner diameter of the conical groove is smaller than the outer diameter of the corresponding position of the conical structure on the surface of the inner pin body 26, so that the expansion sleeve 21 can expand outward under the abutment of the conical structure on the surface of the inner pin body 26 when plugged in, and then the expansion sleeve 21 abuts against the inner wall of the connecting hole 13 to eliminate the gap between the expansion sleeve 21 and the connecting hole 13, through the conical structure The cooperation with the conical groove not only enables the inner pin body 26 to abut and expand the expansion sleeve 21 to achieve a gap-free and stable connection between the connecting pin 2 and the connecting hole 13, but also enables the expansion sleeve 21 to expand and abut against the inner wall of the connecting hole 13 only when it is about to be inserted into place, thereby reducing the friction resistance when the expansion sleeve 21 is inserted, making the insertion process of the connecting pin 2 and the connecting hole 13 more convenient and labor-saving; correspondingly, when it is necessary to disassemble and remove the connecting pin 2, it is only necessary to pull the expansion sleeve 21 slightly outward, so that the inner pin body 26 will no longer abut and stretch the expansion sleeve 21. At this time, the expansion sleeve 21 resets and contracts under the action of its own elasticity and separates from the inner wall of the connecting hole 13, thereby reducing the friction resistance when the expansion sleeve 21 is removed, making the disassembly process of the connecting pin 2 more convenient and labor-saving.

[0049] Furthermore, screw rods 25 are fixedly installed at both ends of the inner pin body 26, and end plates 23 are fixedly installed at the ends of the expansion sleeve 21. The end plates 23 are plugged into the screw rods 25, and nuts 24 are threadedly installed on the screw rods 25. The nuts 24 can tighten the end plates 23 and abut against the surface of the hinge beam 12. When the expansion sleeve 21 is about to be plugged into place and abutted and expanded by the inner pin body 26, the end plate 23 at the end of the expansion sleeve 21 is plugged into the screw rod 25. At this time, the nut 24 is rotated and installed on the screw rod 25, and the nut 24 is continuously rotated to move the nut 24 toward the inner pin body 26. At the same time, the nut 24 tightens the end plate 23 and the expansion sleeve. 21 moves toward the inner pin body 26 to abut and move the expansion sleeve 21, so that the expansion sleeve 21 continues to be inserted into the inner pin body 26 until the nut 24 abuts and locks the end plate 23 on the surface of the hinge beam 12. The expansion sleeve 21 is completely inserted into the surface of the inner pin body 26 and is expanded and supported inside the connecting hole 13 under the abutment of the inner pin body 26; the end plate 23 and the expansion sleeve 21 are pushed forward by the rotation of the nut 24, making the insertion and installation process of the expansion sleeve 21 more convenient, and the nut 24 can also cooperate with the screw 25 to lock the end plate 23 and the expansion sleeve 21 to further improve the stability of the connection between the connecting pin 2 and the connecting hole 13 as a whole.

[0050] Example 3

[0051] See also Figure 1 、 Figure 8 、 Figure 9 As shown, the difference between this embodiment and the above embodiment is that the hydraulic telescopic shaft 3 includes a hydraulic cylinder 31, a piston 33 is slidably installed inside the hydraulic cylinder 31, and the piston 33 divides the interior of the hydraulic cylinder 31 into an extension chamber 36 and a contraction chamber 37. A telescopic shaft 32 is fixedly installed on one side of the contraction chamber 37 on the piston 33, and one end of the telescopic shaft 32 extends to the outside of the hydraulic cylinder 31 and is fixedly installed with a top hammer 4; an extension chamber inlet and outlet nozzle 34 and a contraction chamber inlet nozzle 37 are fixedly installed on the outer wall of the hydraulic cylinder 31. The oil outlet nozzle 35 and the extension chamber inlet and outlet nozzle 34 are connected to the external hydraulic system at one end, and the other end of the extension chamber inlet and outlet nozzle 34 is connected to the extension chamber 36. A liquid guide channel 38 is provided inside the side wall of the hydraulic cylinder 31. One end of the liquid guide channel 38 is connected to the contraction chamber 37, and the other end of the liquid guide channel 38 is connected to the inner end of the contraction chamber inlet and outlet nozzle 35. The outer end of the contraction chamber inlet and outlet nozzle 35 is connected to the external hydraulic system. The end face of the top hammer 4 is provided with a top pressure plane, and the outer ring of the top hammer 4 is provided with a sealing inclined surface.

[0052] Among them, the hydraulic system is a hydraulic delivery system commonly used in the prior art and will not be described in detail here. When synthesizing diamonds, the hydraulic system pumps hydraulic oil into the extension chamber 36 through the extension chamber inlet and outlet nozzles 34. At the same time, the hydraulic system sucks the hydraulic oil in the contraction chamber 37 outward through the liquid guide channel 38 and the contraction chamber inlet and outlet nozzles 35. At this time, the piston 33 moves toward the contraction chamber 37 under the action of the hydraulic pressure difference on both sides, thereby driving the telescopic shaft 32 and the top hammer 4 to move forward, so that multiple top hammers 4 gradually move closer. At this time, the top pressure plane and the sealing inclined surface at the end of the top hammer 4 are both in contact with the pyrophyllite surface, pressurizing the pyrophyllite, so that the diamond raw material inside the pyrophyllite produces diamonds under a high-pressure environment;

[0053] After the diamond is synthesized, the hydraulic system sucks the hydraulic oil in the extension chamber 36 outward through the extension chamber inlet and outlet nozzles 34. At the same time, the hydraulic system pumps the hydraulic oil into the contraction chamber 37 through the liquid guide channel 38 and the contraction chamber inlet and outlet nozzles 35. At this time, the piston 33 moves toward the extension chamber 36 and resets under the action of the hydraulic pressure difference on both sides, thereby driving the telescopic shaft 32 and the top hammer 4 to move backward, contract and reset, so that multiple top hammers 4 gradually move and open, releasing the pressure on the talc, and then the talc can be taken out.

[0054] Example 4

[0055] See also Figures 6-10As shown, the difference between this embodiment and the above embodiment is that a buffer protection mechanism 5 is fixedly installed on the top hammer 4, and the buffer protection mechanism 5 includes a protection boss 51, which is fixedly installed on the rear side end of the top hammer 4. A plurality of buffer shafts 52 with inclined settings are slidably installed on the outer ring of the protection boss 51, and a buffer plate 56 is fixedly installed on the outer end of the buffer shaft 52. A buffer spring 57 is sleeved on the outer ring of the buffer shaft 52, and one end of the buffer spring 57 abuts against the surface of the protection boss 51, and the other end of the buffer spring 57 abuts against the inner side surface of the buffer plate 56.

[0056] When the top hammer 4 is pressurized by the hydraulic action of the hydraulic oil in the extension chamber 36 on the talc, if the talc is squeezed and damaged under the action of high pressure, the top end of the top hammer 4 is no longer subject to abutment limit, and the top hammer 4 will continue to move forward under the hydraulic action of the hydraulic oil in the extension chamber 36. There is a risk of collision with other top hammers 4 and damage to the top hammer 4. In this embodiment, by providing a buffer protection mechanism 5, when the talc is damaged and the top hammer 4 is about to collide, the buffer plates 56 on the outer rings of adjacent top hammers 4 abut against each other, thereby abutting and contracting the buffer shaft 52 toward the inside of the protective boss 51, and at the same time, the buffer plate 56 abuts and contracts the buffer spring 57, thereby buffering and protecting the top hammer 4 through the buffer plate 56, the buffer shaft 52 and the buffer spring 57, eliminating the impact potential energy of the top hammer 4, preventing the top hammer 4 from colliding, and effectively preventing the top hammer 4 from being damaged by mutual collision.

[0057] Example 5

[0058] See also Figures 6-10 As shown, the difference between this embodiment and the above embodiment is that a plurality of buffer cavities 53 corresponding to the buffer shafts 52 are formed inside the protective boss 51. The inner end of the buffer shaft 52 extends into the buffer cavity 53 and is fixedly mounted with a hydraulic plug 58. The buffer cavity 53 is filled with hydraulic oil located below the hydraulic plug 58.

[0059] When the talc-damaged buffer shaft 52 is pushed inward and retracted, the buffer shaft 52 drives the hydraulic plug 58 to move toward the bottom end of the buffer chamber 53, squeezing the hydraulic oil below the hydraulic plug 58. The hydraulic plug 58 and the hydraulic oil cooperate to further buffer and protect the top hammer 4, thereby improving the buffering effect of the top hammer 4.

[0060] Furthermore, the interior of the protective boss 51 is provided with a plurality of branch flow channels 54 corresponding one-to-one to the buffer chambers 53. One end of the branch flow channel 54 is communicated with the bottom end of the corresponding buffer chamber 53. The interior of the telescopic shaft 32 is provided with a main flow channel 55. One end of the main flow channel 55 is simultaneously communicated with the plurality of branch flow channels 54 in the protective boss 51, and the other end of the main flow channel 55 is communicated with the contraction chamber 37. A valve assembly is installed at the inlet end of the branch flow channel 54. The hydraulic plug 58 can abut and open the valve assembly when under pressure to move downward, so as to pump the hydraulic oil in the buffer chamber 53 into the contraction chamber 37 through the branch flow channel 54 and the main flow channel 55.

[0061] When the hydraulic plug 58 is pressurized and moves downward, the hydraulic plug 58 abuts the valve assembly to open it. Then, as the hydraulic plug 58 continues to move downward, the hydraulic plug 58 squeezes and pumps the hydraulic oil in the buffer chamber 53 into the contraction chamber 37 through the branch channel 54 and the main channel 55, so as to increase the hydraulic resistance of the hydraulic oil in the contraction chamber 37 to the piston 33, thereby buffering and decelerating the piston 33, thereby buffering and decelerating the telescopic shaft 32 and the top hammer 4, further improving the buffering effect on the top hammer 4, and preventing the top hammers 4 from colliding with each other and being damaged.

[0062] Example 6

[0063] See also Figures 6-10 As shown, the difference between this embodiment and the above embodiment is that the valve assembly includes a slide groove 512 opened at the bottom end of the buffer chamber 53, a sliding seat 510 is slidably installed inside the slide groove 512, and a return spring 515 is abutted against the bottom end of the sliding seat 510. One end of the branch flow channel 54 is communicated with the side wall of the slide groove 512, and a hydraulic oil delivery gap is left between one end of the sliding seat 510 and the side wall of the slide groove 512. A slider 513 is slidably installed inside the sliding seat 510, and a pressure spring 511 is abutted against the other end of the slider 513. A sealing plug 514 is fixedly installed, and a sealing ball head is provided at one end of the sealing plug 514 for abutting and sealing the inlet of the branch flow channel 54. A push rod 59 corresponding to the sliding seat 510 is fixedly installed at the bottom end of the hydraulic plug 58.

[0064] Among them, the sealing ball head initially seals the branch flow channel 54 to isolate the buffer chamber 53 from the contraction chamber 37, so that when the hydraulic pressure changes in the contraction chamber 37 drive the top hammer 4 to move telescopically, it will not affect the hydraulic oil in the buffer chamber 53. Correspondingly, the hydraulic oil in the buffer chamber 53 will not affect the lifting and lowering adjustment of the hydraulic pressure in the contraction chamber 37. When the hydraulic plug 58 is pressurized and moves downward to press the top hammer 4, the hydraulic plug 58 drives the push rod 59 to move downward synchronously, so that the push rod 59 moves the sliding seat 510 to abut the lower end of the slide groove 512. At this time, the sealing ball head moves and contracts into the sliding seat 510 under the guidance of the spherical surface, so that the sealing plug 514 and the branch flow channel 54 move staggered, so that The branch flow channel 54 is in an open state. Then, when the hydraulic plug 58 moves downward, the hydraulic oil in the buffer chamber 53 can be squeezed and pumped into the contraction chamber 37 to buffer and decelerate the piston 33 and the top hammer 4. When the buffering protection of the top hammer 4 is completed and the top hammer 4 moves backward and resets away under the drive of the hydraulic oil in the contraction chamber 37, the buffer plates 56 on the adjacent top hammers 4 move apart. At this time, the buffer plates 56 move and reset under the action of the reset elastic force of the buffer spring 57, and drive the buffer shaft 52 and the hydraulic plug 58 to move and reset. At the same time, the sliding seat 510 moves and resets under the elastic force of the reset spring 515, so as to drive the sealing plug 514 upward to seal the branch flow channel 54 again.

[0065] Furthermore, a through groove is provided on the sliding seat 510 at one end of the pressure spring 511 to connect the interior of the sliding seat 510 with the buffer chamber 53. When the hydraulic plug 58 moves upward, the slider 513 and the sealing plug 514 can be compressed and received under the hydraulic action of the negative pressure suction in the buffer chamber 53 and the hydraulic pressure of the hydraulic oil in the contraction chamber 37 to open the opening of the branch channel 54. At this time, the contraction chamber 37 can automatically transport replenished hydraulic oil to the buffer chamber 53 through the branch channel 54.

[0066] Example 7

[0067] This embodiment discloses a method for processing diamond with high thermal stability, the specific steps of which are:

[0068] First, multiple positioning seats 11 on the top press 1 are fixedly connected in sequence through the cooperation of the hinge beams 12, the connecting holes 13 and the connecting pins 2 to form a multi-faceted top press structure; when connecting, the hinge beams 12 between adjacent positioning seats 11 are staggered and overlapped with each other, and then the inner pin bodies 26 in the connecting pins 2 are inserted into the connecting holes 13 on the two groups of staggered hinge beams 12, and then the expansion sleeves 21 are inserted into both ends of the inner pin bodies 26. At this time, the expansion sleeves 21 expand outward under the internal support of the inner pin bodies 26, so that the outer surface of the expansion sleeves 21 expands and abuts against the inner wall of the connecting hole 13, thereby locking and fixing the hinge beams 12;

[0069] Afterwards, the pyrophyllite block wrapped with the raw material for preparing high thermal stability diamond is placed on the top surface of the top hammer 4 at the bottom, and then multiple hydraulic telescopic shafts 3 drive multiple top hammers 4 to move synchronously toward the center position of the top press 1, so that multiple top hammers 4 cooperate to squeeze the pyrophyllite and the diamond raw material inside, so that the diamond raw material generates high thermal stability diamond under the action of high pressure.

[0070] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0071] The preferred embodiments of the invention disclosed above are intended only to help illustrate the invention. These preferred embodiments do not exhaust all details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A diamond synthesis device, comprising a top press, characterized in that: The top pressing machine includes multiple top pressing modules, which are connected in sequence by connecting pins to form a multi-faceted top pressing structure; The top pressure module includes a positioning seat, and the outer ring of the positioning seat is fixedly mounted with multiple sets of hinge beams. The outer ends of the hinge beams are provided with connection holes. The hinge beams between adjacent positioning seats are staggered and overlapped with each other, and the connecting pins are inserted into the connection holes on the two staggered hinge beams to pin-connect the two staggered hinge beams. The connecting pin includes an inner pin body and an expansion sleeve. The inner pin body is inserted into the connecting hole, and the expansion sleeve is inserted into the surface of the inner pin body. When the expansion sleeve is inserted, it can expand outward under the internal support of the inner pin body, so that the outer surface of the expansion sleeve expands and abuts against the inner wall of the connecting hole. A hydraulic telescopic shaft is fixedly installed on the inner side of the positioning seat, and a top hammer is fixedly installed on the telescopic end of the hydraulic telescopic shaft. Multiple hydraulic telescopic shafts can drive multiple top hammers to move toward the center position of the top press; The hydraulic telescopic shaft includes a hydraulic cylinder, in which a piston is slidably mounted. The piston divides the interior of the hydraulic cylinder into an extension chamber and a contraction chamber. A buffer protection mechanism is fixedly installed on the top hammer, and the buffer protection mechanism includes a protection boss, and a plurality of buffer shafts with inclined settings are slidably installed on the outer ring of the protection boss, a buffer plate is fixedly installed on the outer end of the buffer shaft, and a buffer spring is provided on the outer ring of the buffer shaft; A plurality of buffer cavities corresponding to the buffer shafts are provided inside the protective boss. The inner end of the buffer shaft extends into the buffer cavity and is fixedly mounted with a hydraulic plug. The buffer cavity is filled with hydraulic oil located below the hydraulic plug. A plurality of branch flow channels corresponding to the buffer chambers are provided inside the protective boss. A valve assembly is installed at the inlet end of the branch flow channel. The hydraulic plug can abut and open the valve assembly when under pressure to move downward, so as to pump the hydraulic oil in the buffer chamber into the contraction chamber through the branch flow channel and the main flow channel.

2. A diamond synthesis device according to claim 1, characterized in that: Both ends of the inner pin body are provided with a conical structure whose diameter gradually decreases from the middle to the two ends. The inner ring of the expansion sleeve is provided with a conical groove corresponding to the conical structure on the surface of the inner pin body. The side wall of the expansion sleeve is also provided with multiple open grooves arranged radially.

3. The diamond synthesis device according to claim 1, characterized in that: Screws are fixedly installed at both ends of the inner pin body, and end plates are fixedly installed at the ends of the expansion sleeve. The end plates are plugged into the screws, and nuts are threadedly installed on the screws. The nuts can tighten the end plates to abut against the surface of the hinge beam.

4. The diamond synthesis device according to claim 1, characterized in that: A telescopic shaft is fixedly mounted on one side of the piston located at the contraction chamber, one end of the telescopic shaft extends to the outside of the hydraulic cylinder and is fixedly mounted with the top hammer.

5. The diamond synthesis device according to claim 4, characterized in that: An extension chamber inlet and outlet oil nozzle and a contraction chamber inlet and outlet oil nozzle are fixedly mounted on the outer wall of the hydraulic cylinder, one end of the extension chamber inlet and outlet oil nozzle is communicated with the external hydraulic system, and the other end of the extension chamber inlet and outlet oil nozzle is communicated with the extension chamber, a liquid guide channel is opened inside the side wall of the hydraulic cylinder, one end of the liquid guide channel is communicated with the contraction chamber, the other end of the liquid guide channel is communicated with the inner end of the contraction chamber inlet and outlet oil nozzle, and the outer end of the contraction chamber inlet and outlet oil nozzle is communicated with the external hydraulic system.

6. The diamond synthesis device according to claim 1, characterized in that: The end face of the top hammer is provided with a top pressure plane, and the outer ring of the top hammer is provided with a sealing inclined surface.

7. The diamond synthesis device according to claim 4, characterized in that: The protective boss is fixedly mounted on the rear side of the top hammer, one end of the buffer spring abuts against the surface of the protective boss, and the other end of the buffer spring abuts against the inner side surface of the buffer plate.

8. The diamond synthesis device according to claim 7, characterized in that: One end of the branch channel is connected to the bottom end of the corresponding buffer cavity, a main channel is opened inside the telescopic shaft, one end of the main channel is simultaneously connected to multiple branch channels in the protective boss, and the other end of the main channel is connected to the contraction cavity.

9. A method for processing diamond with high thermal stability, using the diamond synthesis device according to any one of claims 1 to 8, characterized in that: The specific steps are: First, multiple positioning seats on the top press are fixedly connected in sequence through the cooperation of hinge beams, connecting holes and connecting pins to form a multi-faceted top press structure; when connecting, the hinge beams between adjacent positioning seats are staggered and overlapped with each other, and then the inner pin bodies in the connecting pins are inserted into the connecting holes on the two sets of staggered hinge beams, and then expansion sleeves are inserted into both ends of the inner pin bodies. At this time, the expansion sleeves expand outwards under the internal support of the inner pin bodies, so that the outer surface of the expansion sleeves expands and abuts against the inner wall of the connecting hole, thereby locking and fixing the hinge beams; Afterwards, the pyrophyllite block wrapped with the raw material for preparing high thermal stability diamond is placed on the top surface of the top hammer at the bottom, and then multiple hydraulic telescopic shafts drive multiple top hammers to move synchronously toward the center position of the top press, so that the multiple top hammers cooperate to squeeze the pyrophyllite and the diamond raw material inside, so that the diamond raw material generates high thermal stability diamond under the action of high pressure.

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