Six-sided top hammer device and method for processing diamond with high thermal conductivity function

Abstract

The present invention discloses a top hammer device for a six-sided top press and a method for processing diamonds with high thermal conductivity, and relates to the field of artificial diamond preparation equipment. The present invention includes multiple groups of hammer heads and hydraulic telescopic mechanisms. The hydraulic telescopic mechanisms are fixedly installed inside the six-sided top press. A hammer head is fixedly installed at the telescopic end of each hydraulic telescopic mechanism. The interior of the hydraulic telescopic mechanism is provided with an extension drive chamber that can drive the hydraulic telescopic mechanism to extend and a contraction drive chamber that drives the hydraulic telescopic mechanism to contract. Both the extension drive chamber and the contraction drive chamber are connected to a hydraulic pumping mechanism. A pressure detection mechanism that can detect the surface pressure of the hammer head is installed on the hammer head. The present invention can directly and accurately detect the surface pressure of the hammer head when the top hammer device is working, thereby improving the accuracy of the hammer head pressure detection. When the hammer head pressure overload is detected, the control system drives the hydraulic pumping mechanism to suck and release the pressure in the extension drive chamber to prevent the hammer head from breaking and being damaged due to pressure overload.

Description

Technical Field

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

[0002] Synthetic diamond is an artificially synthesized diamond made 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 CN107916356B discloses a method for preparing a highly thermally conductive diamond / copper composite material. This method can produce diamond with high thermal conductivity for use as an electronic packaging material.

[0003] The six-sided top press is the most widely used synthetic diamond production equipment in China. Prior art six-sided top presses require monitoring and control of the top hammer pressure during use to prevent crack propagation and brittle fracture caused by overload of the hammer head. For example, Chinese patent CN116688863A discloses a six-cylinder pressure dynamic balance adjustment system for a six-sided top press. This system uses a front-chamber back-pressure adjustment module to individually adjust the front-chamber pressure in each cylinder based on the piston resistance measured by an internal resistance detection module.

[0004] The above patent mainly detects the pressure of the hammer head indirectly by detecting and adjusting the pressure of the oil cylinder. However, the force applied to the top hammer is complex when it is working. Simply detecting the pressure of the oil cylinder cannot accurately reflect the pressure applied to the hammer head, so that the hammer head is still at risk of breaking due to pressure overload. Summary of the Invention

[0005] In response to the problems in the related art, the present invention proposes a six-sided top hammer device and a method for processing diamonds with high thermal conductivity to overcome the above-mentioned technical problems existing in the existing related art.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a top hammer device for a six-sided top press, comprising a plurality of hammer heads and a hydraulic telescopic mechanism. The hydraulic telescopic mechanism is fixedly mounted inside the six-sided top press, and the hammer head is fixedly mounted at each telescopic end of the hydraulic telescopic mechanism. The hydraulic telescopic mechanism is provided with an extension drive chamber capable of driving the hydraulic telescopic mechanism to extend and a contraction drive chamber capable of driving the hydraulic telescopic mechanism to contract. Both the extension drive chamber and the contraction drive chamber are connected to a hydraulic pumping mechanism.

[0008] The hammer head is equipped with a pressure detection mechanism capable of detecting the surface pressure of the hammer head. The pressure detection mechanism is connected to the control system signal of the six-sided top press so that the control system can receive the pressure information detected by the pressure detection mechanism and drive the hydraulic pumping mechanism to suck and relieve the pressure in the extension drive chamber when the hammer head pressure overload is detected.

[0009] Furthermore, the front end of the hammer head is provided with an extrusion surface, and the outer ring of the front end of the hammer head is provided with a plurality of sealing surfaces arranged obliquely.

[0010] Furthermore, the pressure detection mechanism includes a micro piezoelectric sensor and a thin film strain gauge, the micro piezoelectric sensor is embedded in the center of the extrusion surface, and the thin film strain gauge is embedded in the edge of the sealing surface.

[0011] Furthermore, a protective shell is provided on the surface of the micro piezoelectric sensor, and the protective shell is a titanium alloy or stainless steel shell, and the surfaces of the protective shell and the thin film strain gauge are coated with a ceramic insulating coating.

[0012] Furthermore, a miniature wireless transmitter is embedded in the interior of the hammer head, and the miniature piezoelectric sensor and the thin film strain gauge are both connected to the control system signal of the six-sided top press through the miniature wireless transmitter.

[0013] Furthermore, the hydraulic telescopic mechanism includes a hydraulic cylinder, a piston is slidably mounted inside the hydraulic cylinder, the piston divides the interior of the hydraulic cylinder into an extension drive chamber and a contraction drive chamber, an extension drive chamber inlet and outlet oil nozzle and a contraction drive chamber inlet and outlet oil nozzle are fixedly mounted on the outer wall of the hydraulic cylinder, the extension drive chamber inlet and outlet oil nozzle are in communication with the extension drive chamber, a guide groove is opened in the side wall of the hydraulic cylinder, one end of the guide groove is in communication with the contraction drive chamber inlet and outlet oil nozzle, and the other end is in communication with the contraction drive chamber;

[0014] A telescopic shaft is fixedly mounted on one end of the piston facing the contraction drive chamber, and one end of the telescopic shaft is sealed and slidably extended to the outside of the hydraulic cylinder and is fixedly connected to the hammer head.

[0015] Furthermore, the hydraulic pumping mechanism includes a hydraulic oil tank, and two groups of oil guide pipes are connected to the hydraulic oil tank. The ends of the two groups of oil guide pipes are respectively connected to the inlet and outlet oil nozzles of the extension drive chamber and the inlet and outlet oil nozzles of the contraction drive chamber, and two-way hydraulic pumps are installed on the two groups of oil guide pipes.

[0016] Furthermore, a quick pressure relief mechanism is installed inside the hydraulic cylinder, and the quick pressure relief mechanism includes a plurality of pressure relief holes, a sealing plate and a rotation drive assembly. The plurality of pressure relief holes are circumferentially distributed on the piston, and the extension drive chamber and the contraction drive chamber can be connected through the pressure relief holes. The sealing plate is rotatably installed on the end of the piston, and the sealing plate can abut and seal the pressure relief holes, and a through hole that can be connected to the pressure relief holes is opened on the sealing plate, and the rotation drive assembly can drive the sealing plate to rotate.

[0017] Furthermore, the rotation drive assembly includes multiple magnetic positioning blocks, torsion springs and multiple electromagnets. The multiple magnetic positioning blocks are circumferentially distributed and embedded in the inner side of the sealing plate. The multiple electromagnets are circumferentially distributed and fixedly installed on one side of the piston and correspond one to one with the multiple magnetic positioning blocks. The electromagnets are conductive and magnetized and can be magnetically fixedly connected to the corresponding magnetic positioning blocks. The torsion spring is sleeved on the outer ring of the telescopic shaft, and one end of the torsion spring is fixedly connected to the sealing plate, and the other end of the torsion spring is fixedly connected to the telescopic shaft.

[0018] The present invention also discloses a method for processing diamond with high thermal conductivity, the specific steps of which are as follows:

[0019] The raw material for processing high thermal conductivity diamond is filled into the heating mold, the pyrophyllite block is coated on the outside of the heating mold, and the pyrophyllite block is placed on the top surface of the hammer head at the bottom;

[0020] The hydraulic pumping mechanism synchronously pumps hydraulic oil into the extension drive chambers inside the six hydraulic telescopic mechanisms to drive the six hydraulic telescopic mechanisms to extend synchronously, thereby causing the six hydraulic telescopic mechanisms to drive the six hammer heads to move synchronously from different directions toward the center of the six-sided top press. The six hammer heads respectively extrude different surfaces of the pyrophyllite, thereby extruding the raw material in the heated mold. At the same time, the positive and negative electrodes on the upper and lower hammer heads are connected to the heated mold, so that the heated mold is electrically heated. Finally, the raw materials react under high temperature and high pressure to generate diamonds with high thermal conductivity.

[0021] During the pressurization process, the pressure detection mechanism continuously detects the pressure on the surface of the hammer head and transmits the detected pressure information to the control system of the six-sided top press. When the hammer head pressure overload is detected, the control system drives the hydraulic pumping mechanism to suck and relieve the pressure in the extension drive chamber to reduce the surface pressure of the hammer head.

[0022] The present invention has the following beneficial effects:

[0023] 1. In the present invention, a pressure detection mechanism is directly installed on the surface of the hammer head, so that the surface pressure of the hammer head can be directly and accurately detected when the top hammer device is working, thereby improving the accuracy of hammer head pressure detection. When the hammer head pressure overload is detected, the control system drives the hydraulic pumping mechanism to suck and relieve the pressure in the extension drive chamber to reduce the surface pressure of the hammer head, preventing the hammer head from causing crack expansion and brittle fracture due to pressure overload, thereby improving the service life of the hammer head and the safety during use.

[0024] 2. In the present invention, a pressure relief hole is provided on the piston in the hydraulic telescopic mechanism, and the pressure relief hole is sealed by a sealing plate. When the hammer head pressure overload is detected, the sealing plate can be driven to rotate rapidly by the rotary drive assembly so that the through hole on the sealing plate is aligned with the pressure relief hole. At this time, the hydraulic oil in the extension drive chamber can be quickly transported to the contraction drive chamber through the through hole and the pressure relief hole, thereby relieving the pressure of the extension drive chamber. Compared with the pressure relief only by suction through the hydraulic pumping mechanism, the pressure relief can be performed more quickly to quickly reduce the surface pressure of the hammer head and prevent the hammer head from causing crack expansion and brittle fracture due to pressure overload.

[0025] 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

[0026] 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.

[0027] Figure 1 This is one of the three-dimensional structural schematic diagrams of the top hammer device of the six-sided top press of the present invention;

[0028] Figure 2 This is the second schematic diagram of the three-dimensional structure of the top hammer device of the six-sided top press of the present invention;

[0029] Figure 3 For the present invention Figure 2 A local enlarged structural diagram of point A;

[0030] Figure 4 This is the third schematic diagram of the three-dimensional structure of the top hammer device of the six-sided top press of the present invention;

[0031] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at point B;

[0032] Figure 6 This is the fourth schematic diagram of the three-dimensional structure of the top hammer device of the six-sided top press of the present invention;

[0033] Figure 7 For the present invention Figure 6 A schematic diagram of the partially enlarged structure at point C;

[0034] Figure 8 This is the fifth schematic diagram of the three-dimensional structure of the top hammer device of the six-sided top press of the present invention;

[0035] Figure 9 For the present invention Figure 8 Schematic diagram of the local enlarged structure at point D.

[0036] In the figure: 1. Six-sided top press; 2. Hammer; 21. Extrusion surface; 22. Sealing surface; 3. Pressure detection mechanism; 31. Micro piezoelectric sensor; 32. Thin film strain gauge; 4. Hydraulic telescopic mechanism; 41. Hydraulic cylinder; 42. Telescopic shaft; 43. Inlet and outlet nozzles of extension drive chamber; 44. Inlet and outlet nozzles of contraction drive chamber; 45. Piston; 46. Extension drive chamber; 47. Contraction drive chamber; 48. Guide groove; 5. Quick pressure relief mechanism; 51. Pressure relief hole; 52. Sealing plate; 53. Through hole; 54. Magnetic positioning block; 55. Limiting guide groove; 56. Gear; 57. Arc rack; 58. Through groove; 59. Connecting column; 510. Torsion spring; 511. Auxiliary sealing plate; 512. Electromagnet. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] Example 1

[0040] See also Figure 1-Figure 5As shown, the present invention is a top hammer device for a six-sided top press, comprising a plurality of hammer heads 2 and a hydraulic telescopic mechanism 4, wherein the hydraulic telescopic mechanism 4 is fixedly mounted inside the six-sided top press 1, and a hammer head 2 is fixedly mounted at the telescopic end of each hydraulic telescopic mechanism 4, wherein an extension drive chamber 46 capable of driving the hydraulic telescopic mechanism 4 to extend and a contraction drive chamber 47 capable of driving the hydraulic telescopic mechanism 4 to contract are provided inside the hydraulic telescopic mechanism 4, and both the extension drive chamber 46 and the contraction drive chamber 47 are connected to a hydraulic pumping mechanism; a pressure detection mechanism 3 capable of detecting the surface pressure of the hammer head 2 is mounted on the hammer head 2, and the pressure detection mechanism 3 is connected to the control system signal of the six-sided top press 1 so that the control system can receive the pressure information detected by the pressure detection mechanism 3, and can drive the hydraulic pumping mechanism to suck and relieve the pressure in the extension drive chamber 46 when it is detected that the pressure of the hammer head 2 is overloaded;

[0041] When the top hammer device of the six-sided top press is working, hydraulic oil is pumped synchronously into the extension drive chamber 46 inside the six hydraulic telescopic mechanisms 4 through the hydraulic pumping mechanism to drive the six hydraulic telescopic mechanisms 4 to extend synchronously, thereby causing the six hydraulic telescopic mechanisms 4 to drive the six hammer heads 2 to move synchronously from different directions toward the center position of the six-sided top press 1, so that the six hammer heads 2 respectively squeeze different surfaces of the pyrophyllite, thereby providing a high-pressure environment for the processing of artificial diamonds; and during the pressurization process, the pressure detection mechanism 3 continuously detects the pressure on the surface of the hammer head 2, and transmits the detected pressure information to the control system of the six-sided top press 1. When it is detected that the pressure of the hammer head 2 is overloaded, the control system drives the hydraulic pumping mechanism to suck and release the pressure in the extension drive chamber 46 to reduce the surface pressure of the hammer head 2;

[0042] By directly installing a pressure detection mechanism 3 on the surface of the hammer head 2, the surface pressure of the hammer head 2 can be accurately detected when the top hammer device is working, thereby improving the pressure detection accuracy of the hammer head 2, and reducing pressure when a pressure overload is detected, thereby preventing the hammer head 2 from causing crack expansion and brittle fracture due to pressure overload, thereby improving the service life of the hammer head 2 and the safety during use.

[0043] Example 2

[0044] See also Figure 2 、 Figure 3 As shown, the difference between this embodiment and the above embodiment is that the front side end of the hammer head 2 is provided with an extrusion surface 21, and the outer ring of the front side end of the hammer head 2 is provided with multiple obliquely arranged sealing surfaces 22, wherein the extrusion surface 21 is used to extrude the pyrophyllite, thereby providing pressure for the production of diamonds, and the setting of the sealing surface 22, on the one hand, can make the adjacent hammer heads 2 avoid each other, so that the hammer heads 2 can be closer together, and on the other hand, the front side of the sealing surface 22 can abut and seal with the pyrophyllite in the central pressure chamber, so that the central pressure chamber forms a closed chamber, thereby improving the pressure effect of the pyrophyllite.

[0045] Example 3

[0046] See also Figure 1-Figure 3 As shown, the difference between this embodiment and the above embodiment is that the pressure detection mechanism 3 includes a micro piezoelectric sensor 31 and a thin film strain gauge 32. The micro piezoelectric sensor 31 is embedded in the center position of the extrusion surface 21, and the thin film strain gauge 32 is embedded in the edge position of the sealing surface 22. When the hammer head 2 is working, the center position of the extrusion surface 21 is its maximum stress position. The micro piezoelectric sensor 31 is used to detect the pressure at the center position of the extrusion surface 21, and the maximum stress exerted on the hammer head 2 is detected in real time. The edge of the sealing surface 22 is sealed against the talc. The thin film strain gauge 32 is used to detect the edge of the sealing surface 22. In addition to detecting the pressure exerted on the sealing surface 22, the sealing condition between the sealing surface 22 and the talc can also be inferred through the detected pressure, thereby facilitating the detection and adjustment of the working condition of the equipment.

[0047] Furthermore, a protective shell is provided on the surface of the micro piezoelectric sensor 31, and the protective shell is a titanium alloy or stainless steel shell, and the surfaces of the protective shell and the thin film strain gauge 32 are coated with a ceramic insulating coating. The protective shell can protect the surface of the micro piezoelectric sensor 31 to prevent the micro piezoelectric sensor 31 from being squeezed and damaged. The ceramic insulating coating can insulate the micro piezoelectric sensor 31 and the thin film strain gauge 32 to prevent the micro piezoelectric sensor 31 and the thin film strain gauge 32 from being broken down by high voltage.

[0048] Furthermore, a miniature wireless transmitter is embedded in the interior of the hammer head 2, and the miniature piezoelectric sensor 31 and the thin film strain gauge 32 are both connected to the control system signal of the six-sided top press 1 through the miniature wireless transmitter; the signal is transmitted through the miniature wireless transmitter, so that the miniature piezoelectric sensor 31 and the thin film strain gauge 32 do not need to be connected to the control system through wires, thereby preventing the wires from being pulled and broken when the hammer head 2 moves in an extension and contraction manner, thereby ensuring stable operation of the device.

[0049] Example 4

[0050] See also Figure 1-Figure 5As shown, the difference between this embodiment and the above embodiment is that the hydraulic telescopic mechanism 4 includes a hydraulic cylinder 41, a piston 45 is slidably installed inside the hydraulic cylinder 41, and the piston 45 divides the interior of the hydraulic cylinder 41 into an extension drive chamber 46 and a contraction drive chamber 47. The extension drive chamber inlet and outlet oil nozzles 43 and the contraction drive chamber inlet and outlet oil nozzles 44 are fixedly installed on the outer wall of the hydraulic cylinder 41. The extension drive chamber inlet and outlet oil nozzles 43 are connected to the extension drive chamber 46. A guide groove 48 is opened in the side wall of the hydraulic cylinder 41, and one end of the guide groove 48 is connected to the contraction drive chamber inlet and outlet oil nozzle 44, and the other end is connected to the contraction drive chamber 47; a telescopic shaft 42 is fixedly installed on the end of the piston 45 facing the contraction drive chamber 47, and one end of the telescopic shaft 42 extends to the outside of the hydraulic cylinder 41 in a sealed and slidable manner and is fixedly connected to the hammer head 2;

[0051] The hydraulic pumping mechanism includes a hydraulic oil tank, to which two sets of oil guide pipes are connected. The ends of the two sets of oil guide pipes are respectively connected to the inlet and outlet nozzles 43 of the extension drive chamber and the inlet and outlet nozzles 44 of the contraction drive chamber, and two-way hydraulic pumps are installed on the two sets of oil guide pipes.

[0052] When the hydraulic telescopic mechanism 4 needs to be driven to extend, the bidirectional hydraulic pump continuously delivers the hydraulic oil in the hydraulic oil tank to the extension drive chamber 46 through the inlet and outlet nozzles 43 of the extension drive chamber. At this time, the piston 45 inside the hydraulic cylinder 41 moves toward the contraction drive chamber 47 under the hydraulic pressure of the hydraulic oil. At the same time, the piston 45 drives the telescopic shaft 42 to gradually extend and retract outward, so that the telescopic shaft 42 drives the hammer head 2 at its end to move toward the center position of the six-sided press 1. When pressure relief is required, the bidirectional hydraulic pump performs reverse hydraulic delivery, sucking the hydraulic oil in the extension drive chamber 46 outward and delivering it toward the hydraulic oil tank, thereby reducing the hydraulic pressure in the extension drive chamber 46.

[0053] When it is necessary to drive the hydraulic telescopic mechanism 4 to contract, the bidirectional hydraulic pump continuously delivers the hydraulic oil in the hydraulic oil tank to the contraction drive chamber 47 through the contraction drive chamber inlet and outlet nozzles 44. At this time, the piston 45 inside the hydraulic cylinder 41 moves toward the extension drive chamber 46 under the hydraulic action of the hydraulic oil. At the same time, the piston 45 drives the telescopic shaft 42 to gradually contract into the hydraulic cylinder 41, so that the telescopic shaft 42 drives the hammer head 2 at its end to move toward the outside of the six-sided press 1.

[0054] Example 5

[0055] See also Figure 6 、 Figure 7As shown, the difference between this embodiment and the above embodiment is that a quick pressure relief mechanism 5 is further installed inside the hydraulic cylinder 41. The quick pressure relief mechanism 5 includes a plurality of pressure relief holes 51, a sealing plate 52 and a rotation drive assembly. The plurality of pressure relief holes 51 are circumferentially distributed and opened on the piston 45. The extension drive chamber 46 and the contraction drive chamber 47 can be connected through the pressure relief holes 51. The sealing plate 52 is rotatably installed on the end of the piston 45. The sealing plate 52 can abut and seal the pressure relief holes 51. The sealing plate 52 is provided with a through hole 53 that can communicate with the pressure relief holes 51. The rotation drive assembly can drive the sealing plate 52 to rotate.

[0056] Among them, the through hole 53 is staggered with the pressure relief hole 51, so that the sealing plate 52 abuts against the pressure relief hole 51 to seal. When it is detected that the hammer head 2 is under pressure overload and there is a risk of fracture, the sealing plate 52 can be driven to rotate rapidly by the rotary drive assembly to align the through hole 53 on the sealing plate 52 with the pressure relief hole 51. At this time, the hydraulic oil in the extension drive chamber 46 can be quickly transported to the contraction drive chamber 47 through the through hole 53 and the pressure relief hole 51 under the action of the hydraulic difference, thereby relieving the pressure of the extension drive chamber 46. Compared with only suction and pressure relief through the hydraulic pumping mechanism, pressure relief can be performed more quickly to quickly reduce the surface pressure of the hammer head 2, thereby preventing the hammer head 2 from causing crack expansion and brittle fracture due to pressure overload.

[0057] Example 6

[0058] See also Figure 6-Figure 9 As shown, the difference between this embodiment and the above embodiment is that the rotation drive assembly includes a plurality of magnetic positioning blocks 54, a torsion spring 510 and a plurality of electromagnets 512. The plurality of magnetic positioning blocks 54 are circumferentially distributed and embedded in the inner side of the sealing plate 52. The plurality of electromagnets 512 are circumferentially distributed and fixedly installed on one side of the piston 45 and correspond one to one with the plurality of magnetic positioning blocks 54. The electromagnets 512 are conductive and magnetized and can be magnetically fixedly connected to the corresponding magnetic positioning blocks 54. The torsion spring 510 is sleeved on the outer ring of the telescopic shaft 42, and one end of the torsion spring 510 is fixedly connected to the sealing plate 52, and the other end of the torsion spring 510 is fixedly connected to the telescopic shaft 42.

[0059] Among them, the electromagnet 512 is connected to the control system of the six-sided top press 1. The control system controls the electromagnet 512 to conduct electricity and generate magnetism, so that the electromagnet 512 is magnetically fixed to the corresponding magnetic positioning block 54, and then the sealing plate 52 is fixed to the end surface of the piston 45 to seal the piston 45. At this time, the torsion spring 510 is in a torsion storage state. When the hammer head 2 is overloaded and pressure relief is required, the control system controls the electromagnet 512 to be powered off and demagnetized, so that the electromagnet 512 and the magnetic positioning block 54 are released from magnetic attraction, thereby releasing the lock on the sealing plate 52. After that, the sealing plate 52 rotates and moves rapidly under the torsion elastic force of the torsion spring 510, so as to drive the through hole 53 and the pressure relief hole 51 to overlap, so that the extension drive chamber 46 and the contraction drive chamber 47 are conductive and pressure relief. The torsion spring 510 that stores torsional force drives the sealing plate 52 to rotate, which can improve the rotation response speed of the sealing plate 52 and make the extension drive chamber 46 and the contraction drive chamber 47 conductive and pressure relief more quickly.

[0060] Furthermore, a secondary sealing plate 511 is rotatably mounted on the end of the piston 45 opposite to the sealing plate 52. The secondary sealing plate 511 is also provided with a through hole 53 corresponding to the pressure relief hole 51. The piston 45 is also provided with an arcuate through groove 58. A connecting column 59 fixedly connected between the sealing plate 52 and the secondary sealing plate 511 is slidably mounted in the through groove 58. The sealing plate 52 and the secondary sealing plate 511 are used to seal both ends of the piston 45, thereby improving the sealing performance of the piston 45. To ensure the normal operation of the hydraulic cylinder 41, when the sealing plate 52 rotates and moves, the auxiliary sealing plate 511 can be driven to rotate and move synchronously through the connecting column 59. When the through holes 53 on the sealing plate 52 and the auxiliary sealing plate 511 coincide with the pressure relief hole 51, the connecting column 59 moves to the end of the through groove 58, thereby limiting the connection column 59, the sealing plate 52 and the auxiliary sealing plate 511 through the end wall of the through groove 58, so that the through hole 53 and the pressure relief hole 51 remain in a coincidence state, and can continuously guide and relieve pressure.

[0061] Example 7

[0062] See also Figure 6-Figure 9As shown, the difference between this embodiment and the above embodiment is that the rotation drive assembly also includes a limiting guide groove 55 opened at one end of the piston 45, an arc-shaped rack 57 is slidably installed in the limiting guide groove 55, and the arc-shaped rack 57 is fixedly connected to the bottom surface of the sealing plate 52, and a gear 56 meshing and connected to the arc-shaped rack 57 is rotatably installed on one side of the limiting guide groove 55, and a motor connected to the gear 56 is embedded in the interior of the piston 45; when the extension drive chamber 46 and the contraction drive chamber 47 are connected and the pressure is released, the gear 56 is driven to rotate by the motor, and at this time the gear 56 meshes and drives the arc-shaped rack 57 to slide along the limiting guide groove 55. When the sealing plate 52 rotates in the opposite direction, the arc-shaped rack 57 drives the sealing plate 52 to rotate in the opposite direction and reset, so that the through hole 53 on the sealing plate 52 is staggered with the pressure relief hole 51, and when the sealing plate 52 rotates in the opposite direction, the connecting column 59 drives the auxiliary sealing plate 511 to rotate in the opposite direction synchronously, so that the sealing plate 52 and the auxiliary sealing plate 511 abut and seal the pressure relief hole 51 again to separate the extension drive chamber 46 and the contraction drive chamber 47, and at this time the magnetic positioning block 54 moves to the top of the electromagnet 512, and the control system controls the electromagnet 512 to conduct electricity and generate magnetism, so that the electromagnet 512 is magnetically fixed to the corresponding magnetic positioning block 54, and then the sealing plate 52 is positioned and locked again.

[0063] Example 8

[0064] This embodiment discloses a method for processing diamond with high thermal conductivity, and the specific steps are as follows:

[0065] Fill the raw material for processing high thermal conductivity diamond into the heating mold, cover the heating mold with a pyrophyllite block, and place the pyrophyllite block on the top surface of the hammer head 2 at the bottom;

[0066] The hydraulic pumping mechanism synchronously pumps hydraulic oil into the extension drive chambers 46 inside the six hydraulic telescopic mechanisms 4 to drive the six hydraulic telescopic mechanisms 4 to extend synchronously, thereby causing the six hydraulic telescopic mechanisms 4 to drive the six hammer heads 2 to move synchronously from different directions toward the center position of the six-sided pressing machine 1, so that the six hammer heads 2 respectively extrude different surfaces of the pyrophyllite, thereby extruding the raw material in the heated mold. At the same time, the positive and negative electrodes on the upper hammer head 2 and the lower hammer head 2 are connected to the heated mold, so that the heated mold is electrically heated. Finally, the raw materials react under high temperature and high pressure to generate diamonds with high thermal conductivity.

[0067] During the pressurization process, the pressure detection mechanism 3 continuously detects the pressure on the surface of the hammer head 2 and transmits the detected pressure information to the control system of the six-sided top press 1. When it is detected that the pressure of the hammer head 2 is overloaded, the control system drives the hydraulic pumping mechanism to suck and relieve the pressure in the extension drive chamber 46 to reduce the surface pressure of the hammer head 2.

[0068] 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.

[0069] 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 top hammer device for a six-sided top press, comprising multiple groups of hammer heads and a hydraulic telescopic mechanism, characterized in that: The hydraulic telescopic mechanism is fixedly installed inside the six-sided top press, and the hammer head is fixedly installed at the telescopic end of each hydraulic telescopic mechanism. The hydraulic telescopic mechanism is provided with an extension drive chamber that can drive the hydraulic telescopic mechanism to extend and a contraction drive chamber that drives the hydraulic telescopic mechanism to contract. The extension drive chamber and the contraction drive chamber are both connected to a hydraulic pumping mechanism; The hammer head is equipped with a pressure detection mechanism capable of detecting the surface pressure of the hammer head. The pressure detection mechanism is connected to the control system signal of the six-sided top press so that the control system can receive the pressure information detected by the pressure detection mechanism and drive the hydraulic pumping mechanism to suck and release the pressure in the extension drive chamber when the hammer head pressure overload is detected; The hydraulic telescopic mechanism includes a hydraulic cylinder, a piston is slidably mounted inside the hydraulic cylinder, and the piston divides the interior of the hydraulic cylinder into an extension drive chamber and a contraction drive chamber; A quick pressure relief mechanism is also installed inside the hydraulic cylinder. The quick pressure relief mechanism includes a plurality of pressure relief holes, a sealing plate, and a rotation drive assembly. The extension drive chamber and the contraction drive chamber can be connected through the pressure relief holes. The sealing plate can abut and seal the pressure relief holes. A through hole that can be connected to the pressure relief holes is formed on the sealing plate. The rotation drive assembly can drive the sealing plate to rotate. The rotary drive assembly includes multiple magnetic positioning blocks, torsion springs and multiple electromagnets. The electromagnets are conductive and magnetized and can be magnetically fixedly connected to the corresponding magnetic positioning blocks, so that the sealing plate is fixed to the end surface of the piston to seal the piston. The torsion spring is sleeved on the outer ring of the telescopic shaft, and one end of the torsion spring is fixedly connected to the sealing plate, and the other end of the torsion spring is fixedly connected to the telescopic shaft.

2. The top hammer device of a six-sided top press according to claim 1, characterized in that: The front side end of the hammer head is provided with an extrusion surface, and the outer ring of the front side end of the hammer head is provided with a plurality of sealing surfaces arranged obliquely.

3. The top hammer device of a six-sided top press according to claim 2, characterized in that: The pressure detection mechanism includes a micro piezoelectric sensor and a thin film strain gauge. The micro piezoelectric sensor is embedded in the center of the extrusion surface, and the thin film strain gauge is embedded in the edge of the sealing surface.

4. The top hammer device of a six-sided top press according to claim 3, characterized in that: The surface of the micro piezoelectric sensor is provided with a protective shell, which is a titanium alloy or stainless steel shell, and the surfaces of the protective shell and the thin film strain gauge are both coated with a ceramic insulating coating.

5. The top hammer device of a six-sided top press according to claim 3, characterized in that: A miniature wireless transmitter is embedded in the interior of the hammer head, and the miniature piezoelectric sensor and the thin film strain gauge are both connected to the control system signal of the six-sided top press through the miniature wireless transmitter.

6. The top hammer device of a six-sided top press according to claim 1, characterized in that: An extension drive chamber inlet and outlet nozzle and a contraction drive chamber inlet and outlet nozzle are fixedly mounted on the outer wall of the hydraulic cylinder, the extension drive chamber inlet and outlet nozzles are in communication with the extension drive chamber, a guide groove is opened in the side wall of the hydraulic cylinder, one end of the guide groove is in communication with the contraction drive chamber inlet and outlet nozzle, and the other end is in communication with the contraction drive chamber; A telescopic shaft is fixedly mounted on one end of the piston facing the contraction drive chamber, and one end of the telescopic shaft is sealed and slidably extended to the outside of the hydraulic cylinder and is fixedly connected to the hammer head.

7. The top hammer device of a six-sided top press according to claim 6, characterized in that: The hydraulic pumping mechanism includes a hydraulic oil tank, and two groups of oil guide pipes are connected to the hydraulic oil tank. The ends of the two groups of oil guide pipes are respectively connected to the inlet and outlet oil nozzles of the extension drive chamber and the inlet and outlet oil nozzles of the contraction drive chamber, and two-way hydraulic pumps are installed on the two groups of oil guide pipes.

8. The top hammer device of a six-sided top press according to claim 6, characterized in that: A plurality of pressure relief holes are circumferentially distributed on the piston, and the sealing plate is rotatably mounted on the end of the piston.

9. The top hammer device of a six-sided top press according to claim 8, characterized in that: The plurality of magnetic positioning blocks are circumferentially distributed and embedded on the inner side of the sealing plate, and the plurality of electromagnets are circumferentially distributed and fixedly installed on one side of the piston and correspond one to one with the plurality of magnetic positioning blocks.

10. A method for processing diamond with high thermal conductivity, using the six-sided top hammer device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: The raw material for processing high thermal conductivity diamond is filled into the heating mold, the pyrophyllite block is coated on the outside of the heating mold, and the pyrophyllite block is placed on the top surface of the hammer head at the bottom; The hydraulic pumping mechanism synchronously pumps hydraulic oil into the extension drive chambers inside the six hydraulic telescopic mechanisms to drive the six hydraulic telescopic mechanisms to extend synchronously, thereby causing the six hydraulic telescopic mechanisms to drive the six hammer heads to move synchronously from different directions toward the center of the six-sided top press. The six hammer heads respectively extrude different surfaces of the pyrophyllite, thereby extruding the raw material in the heated mold. At the same time, the positive and negative electrodes on the upper and lower hammer heads are connected to the heated mold, so that the heated mold is electrically heated. Finally, the raw materials react under high temperature and high pressure to generate diamonds with high thermal conductivity. During the pressurization process, the pressure detection mechanism continuously detects the pressure on the surface of the hammer head and transmits the detected pressure information to the control system of the six-sided top press. When the hammer head pressure overload is detected, the control system drives the hydraulic pumping mechanism to suck and relieve the pressure in the extension drive chamber to reduce the surface pressure of the hammer head.

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