Holding-up hammer device of cubic press and method for processing diamond with high heat conduction function by using holding-up hammer device

Abstract

The invention discloses a holding-up hammer device of a cubic press and a method for processing a diamond with a high heat conduction function by using the holding-up hammer device, and relates to the field of artificial diamond preparation equipment. The device comprises a plurality of groups of hammer heads and hydraulic telescopic mechanisms, the hydraulic telescopic mechanisms are fixedly mounted in the cubic press, and the hammer head is fixedly mounted at the telescopic end of each hydraulic telescopic mechanism; an extension driving cavity capable of driving the hydraulic telescopic mechanism to extend and a contraction driving cavity capable of driving the hydraulic telescopic mechanism to contract are formed in the hydraulic telescopic mechanism, and the extension driving cavity and the contraction driving cavity are both connected with hydraulic pumping mechanisms. And a pressure detection mechanism capable of detecting the surface pressure of the hammer head is mounted on the hammer head. According to the hammer holding-up device, the surface pressure of the hammer head can be directly and accurately detected when the hammer holding-up device works, the hammer head pressure detection precision is improved, when it is detected that the hammer head pressure is overloaded, the control system drives the hydraulic pumping mechanism to suck and release pressure in the stretching driving cavity, and the hammer head is prevented from being broken and damaged due to the overloaded pressure.

Description

Technical Field

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

[0002] Artificial diamond is artificially synthesized diamond, which is sintered from diamond micropowder and a small amount of binder under high temperature and high pressure. It has the characteristics of high wear resistance, strong impact toughness, good thermal stability, and dense and uniform structure, and is widely used in manufacturing oil, geological drill bits, machining tools, and gem processing. For example, Chinese Patent CN107916356B discloses a method for preparing a diamond / copper composite material with high thermal conductivity, which can prepare diamond with high thermal conductivity function and is used as an electronic packaging material.

[0003] The six-sided press is the most widely used artificial diamond preparation equipment in China. In the prior art, during the use of the six-sided press, it is necessary to detect and control the top hammer pressure to prevent crack propagation and brittle fracture caused by overloading of the hammer head pressure. For example, Chinese Patent CN116688863A discloses a six-cylinder pressure dynamic balance adjustment system for a six-sided press, which can separately adjust the front chamber pressure in each oil cylinder according to the piston resistance obtained by the internal resistance detection module through the front chamber back pressure adjustment module.

[0004] The above patents mainly indirectly detect the hammer head pressure by detecting and adjusting the pressure of the oil cylinder. However, when the top hammer is working, its force is complex. Simply detecting the pressure of the oil cylinder cannot accurately reflect the pressure on the hammer head, resulting in the risk of fracture of the hammer head due to overloading. Summary of the Invention

[0005] Aiming at the problems in the related art, the present invention provides a top hammer device for a six-sided press and a method for processing diamond with high thermal conductivity function to overcome the above technical problems existing in the prior related art.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention provides a top hammer device for a six-sided press, including multiple groups of hammer heads and a hydraulic telescopic mechanism. The hydraulic telescopic mechanism is fixedly installed inside the six-sided press. The telescopic end of each hydraulic telescopic mechanism is fixedly installed with the hammer head. An extension drive chamber capable of driving the hydraulic telescopic mechanism to extend and a contraction drive chamber for driving the hydraulic telescopic mechanism to contract are arranged inside the hydraulic telescopic mechanism. The extension drive chamber and the contraction drive chamber are both connected to a hydraulic pumping mechanism; A pressure detection mechanism capable of detecting the surface pressure of the hammer head is installed on the hammer head. The pressure detection mechanism is signal-connected to the control system of the six-sided top press, so that the control system can receive the pressure information detected by the pressure detection mechanism and can drive the hydraulic pumping mechanism to suck and relieve pressure in the expansion drive chamber when the hammer head pressure overload is detected.

[0007] Further, an extrusion surface is provided at the front end of the hammer head, and a plurality of inclined sealing surfaces are provided on the outer ring of the front end of the hammer head.

[0008] Further, the pressure detection mechanism includes a micro piezoelectric sensor and a thin film strain gauge. The micro piezoelectric sensor is embedded and installed at the center position of the extrusion surface, and the thin film strain gauge is embedded and installed at the edge position of the sealing surface.

[0009] Further, a protective housing is provided on the surface of the micro piezoelectric sensor. The protective housing is a titanium alloy or stainless steel housing, and ceramic insulating coatings are applied on the surfaces of the protective housing and the thin film strain gauge.

[0010] Further, a micro wireless transmitter is embedded and installed inside the hammer head. The micro piezoelectric sensor and the thin film strain gauge are both signal-connected to the control system of the six-sided top press through the micro wireless transmitter.

[0011] Further, the hydraulic telescopic mechanism includes a hydraulic cylinder. A piston is slidably installed inside the hydraulic cylinder. The piston divides the interior of the hydraulic cylinder into an expansion drive chamber and a contraction drive chamber. An expansion drive chamber inlet and outlet nozzle and a contraction drive chamber inlet and outlet nozzle are fixedly installed on the outer wall of the hydraulic cylinder. The expansion drive chamber inlet and outlet nozzle is communicated with the expansion drive chamber. A diversion groove is provided in the side wall of the hydraulic cylinder. One end of the diversion groove is connected to the contraction drive chamber inlet and outlet nozzle, and the other end is communicated with the contraction drive chamber; One end of the piston facing the contraction drive chamber is fixedly installed with a telescopic shaft. One end of the telescopic shaft is hermetically slid and extended to the outside of the hydraulic cylinder and is fixedly connected to the hammer head.

[0012] Further, the hydraulic pumping mechanism includes a hydraulic oil tank. Two groups of oil guide pipes are connected and installed on the hydraulic oil tank. The end parts of the two groups of oil guide pipes are respectively communicated with the expansion drive chamber inlet and outlet nozzle and the contraction drive chamber inlet and outlet nozzle, and two-way hydraulic pumps are installed on both groups of oil guide pipes.

[0013] Furthermore, a rapid pressure relief mechanism is installed inside the hydraulic cylinder. The rapid pressure relief mechanism includes a plurality of pressure relief holes, a sealing plate, and a rotation driving assembly. The plurality of pressure relief holes are circumferentially distributed and opened on the piston. The extension driving chamber and the contraction driving chamber can be communicated through the pressure relief holes. The sealing plate is rotatably installed at the end of the piston. The sealing plate can abut and seal the pressure relief holes, and a through hole that can be communicated with the pressure relief holes is opened on the sealing plate. The rotation driving assembly can drive the sealing plate to rotate.

[0014] Furthermore, the rotation driving assembly includes a plurality of magnetic positioning blocks, a torsion spring, and a plurality of electromagnets. The plurality of magnetic positioning blocks are circumferentially distributed and embedded on the inner side surface of the sealing plate. The plurality of electromagnets are circumferentially distributed and fixedly installed on one side of the piston and correspond to the plurality of magnetic positioning blocks one by one. After the electromagnets are electrified to generate magnetism, they 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.

[0015] The present invention also discloses a method for processing diamond with high thermal conductivity function. The specific steps are as follows: Fill the raw material for processing diamond with high thermal conductivity function into the heating mold, wrap the pyrophyllite cube outside the heating mold, and place the pyrophyllite cube on the top surface of the bottom hammer head. Through the hydraulic pumping mechanism, hydraulic oil is synchronously pumped into the extension driving chambers inside the six hydraulic telescopic mechanisms to drive the six hydraulic telescopic mechanisms to synchronously extend. Further, the six hydraulic telescopic mechanisms drive the six hammer heads to synchronously move from different directions towards the central position of the six-sided top press, so that the six hammer heads respectively extrude different surfaces of the pyrophyllite, and then extrude the raw material in the heating mold. At the same time, the positive and negative electrodes on the upper hammer head and the lower hammer head are conducted with the heating mold to make the heating mold energized and heated. Finally, the raw material reacts under high temperature and high pressure to generate diamond with high thermal conductivity function. And 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 it is detected that the pressure of the hammer head is overloaded, the control system drives the hydraulic pumping mechanism to suck and relieve pressure in the extension driving chamber to reduce the pressure on the surface of the hammer head.

[0016] The present invention has the following beneficial effects: 1. In the present invention, a pressure detection mechanism is directly installed on the surface of the hammer head, which can accurately detect the pressure on the surface of the hammer head directly during the operation of the anvil device, improving the accuracy of hammer head pressure detection. And when it is detected that the pressure of the hammer head is overloaded, the control system drives the hydraulic pumping mechanism to suck and relieve pressure in the extension drive chamber, so as to reduce the pressure on the surface of the hammer head, prevent crack propagation and brittle fracture caused by overloaded pressure of the hammer head, and improve the service life and safety of the hammer head during use.

[0017] 2. In the present invention, a pressure relief hole is provided on the piston in the hydraulic telescopic mechanism and sealed by a sealing plate. When it is detected that the pressure of the hammer head is overloaded, the sealing plate can be driven to rotate quickly by the rotation 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 pressure for the extension drive chamber. Compared with only sucking and relieving pressure through the hydraulic pumping mechanism, pressure can be relieved more quickly to rapidly reduce the pressure on the surface of the hammer head and prevent crack propagation and brittle fracture caused by overloaded pressure of the hammer head.

[0018] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is one of the three-dimensional structure diagrams of the anvil device of the six-sided top press of the present invention; Figure 2 It is the second three-dimensional structure diagram of the anvil device of the six-sided top press of the present invention; Figure 3 For the present invention Figure 2 Partial enlarged structure diagram at A; Figure 4 It is the third three-dimensional structure diagram of the anvil device of the six-sided top press of the present invention; Figure 5 For the present invention Figure 4 Partial enlarged structure diagram at B; Figure 6 It is the fourth three-dimensional structure diagram of the anvil device of the six-sided top press of the present invention; Figure 7 For the present invention Figure 6 Partial enlarged structure diagram at C; Figure 8This is the fifth schematic diagram of the three-dimensional structure of the anvil device of the cubic press of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the partial enlarged structure at position D.

[0021] In the figure: 1. Cubic press; 2. Hammer head; 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. Oil inlet and outlet nozzle for the extension drive chamber; 44. Oil inlet and outlet nozzle for the contraction drive chamber; 45. Piston; 46. Extension drive chamber; 47. Contraction drive chamber; 48. Flow guide groove; 5. Quick pressure relief mechanism; 51. Pressure relief hole; 52. Sealing plate; 53. Through hole; 54. Magnetic positioning block; 55. Limit guide groove; 56. Gear; 57. Arc-shaped rack; 58. Through groove; 59. Connecting column; 510. Torsion spring; 511. Sub-sealing plate; 512. Electromagnet. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the invention.

[0023] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "top", "middle", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the invention.

[0024] Embodiment 1

[0025] Please refer to Figures 1 - 5As shown in the figure, the present invention is a top hammer device for a six-sided press, which includes multiple groups of hammer heads 2 and a hydraulic telescopic mechanism 4. The hydraulic telescopic mechanism 4 is fixedly installed inside the six-sided press 1, and the telescopic end of each hydraulic telescopic mechanism 4 is fixedly installed with a hammer head 2. 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 arranged inside the hydraulic telescopic mechanism 4. Both the extension drive chamber 46 and the contraction drive chamber 47 are connected with a hydraulic pumping mechanism; a pressure detection mechanism 3 capable of detecting the surface pressure of the hammer head 2 is installed on the hammer head 2, and the pressure detection mechanism 3 is in signal connection with the control system of the six-sided 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 pressure in the extension drive chamber 46 when it detects that the pressure of the hammer head 2 is overloaded; When the top hammer device of the six-sided press works, hydraulic oil is pumped into the extension drive chamber 46 inside the six hydraulic telescopic mechanisms 4 synchronously through the hydraulic pumping mechanism to drive the six hydraulic telescopic mechanisms 4 to extend synchronously. Furthermore, the six hydraulic telescopic mechanisms 4 drive the six hammer heads 2 to move synchronously from different directions towards the central position of the six-sided press 1, so that the six hammer heads 2 respectively extrude different surfaces of the pyrophyllite, thereby providing a high-pressure environment for the processing of synthetic diamond; 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 into the control system of the six-sided press 1. When it detects that the pressure of the hammer head 2 is overloaded, the control system drives the hydraulic pumping mechanism to suck and relieve pressure in the extension drive chamber 46 to reduce the surface pressure of the hammer head 2; By directly installing the pressure detection mechanism 3 on the surface of the hammer head 2, the surface pressure of the hammer head 2 can be accurately detected directly when the top hammer device works, the pressure detection accuracy of the hammer head 2 is improved, and pressure reduction is carried out when pressure overload is detected, preventing crack propagation and brittle fracture of the hammer head 2 due to pressure overload, and improving the service life and safety of the hammer head 2 during use.

[0026] Embodiment Two

[0027] Please refer to Figure 2 、 Figure 3 As shown in the figure, the difference between this embodiment and the above embodiment is that an extrusion surface 21 is arranged at the front end of the hammer head 2, and a plurality of inclined sealing surfaces 22 are arranged on the outer ring at the front end of the hammer head 2. Among them, the extrusion surface 21 is used to extrude the pyrophyllite to provide pressure for the production of diamond, and the arrangement of the sealing surface 22 can, on the one hand, enable adjacent hammer heads 2 to 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 against and seal the pyrophyllite in the central pressure chamber, so that the central pressure chamber forms a closed chamber to improve the pressure-receiving effect of the pyrophyllite.

[0028] Embodiment Three

[0029] Please refer to Figures 1 - 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 inlaid and installed at the center position of the extrusion surface 21, and the thin film strain gauge 32 is inlaid and installed at the edge position of the sealing surface 22. When the hammer head 2 works, the center position of the extrusion surface 21 is the position of its maximum stress. The pressure at the center position of the extrusion surface 21 is detected by the micro piezoelectric sensor 31 to detect the maximum stress received by the hammer head 2 in real time. The edge of the sealing surface 22 is in contact with and sealed by pyrophyllite. The edge of the sealing surface 22 is detected by the thin film strain gauge 32. In addition to detecting the pressure received by the sealing surface 22, the sealing condition between the sealing surface 22 and pyrophyllite can also be inferred through the detected pressure, so as to facilitate the detection and adjustment of the working condition of the equipment.

[0030] Furthermore, a protective housing is provided on the surface of the micro piezoelectric sensor 31. The protective housing is a titanium alloy or stainless steel housing, and ceramic insulation coatings are applied on the surfaces of both the protective housing and the thin film strain gauge 32. The protective housing can protect the surface of the micro piezoelectric sensor 31 to prevent the micro piezoelectric sensor 31 from being damaged by extrusion, and the ceramic insulation coating can provide insulation protection for 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.

[0031] Furthermore, a micro wireless transmitter is inlaid and installed inside the hammer head 2. Both the micro piezoelectric sensor 31 and the thin film strain gauge 32 are signal-connected to the control system of the six-sided top press 1 through the micro wireless transmitter; the signal is transmitted through the micro wireless transmitter, so that the micro 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 expands and contracts, and ensuring the stable operation of the device.

[0032] Embodiment 4

[0033] Please refer to Figures 1 - 5 As 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. The piston 45 divides the interior of the hydraulic cylinder 41 into an extension drive chamber 46 and a contraction drive chamber 47. An extension drive chamber oil inlet and outlet nozzle 43 and a contraction drive chamber oil inlet and outlet nozzle 44 are fixedly installed on the outer wall of the hydraulic cylinder 41. The extension drive chamber oil inlet and outlet nozzle 43 is communicated with the extension drive chamber 46. A diversion groove 48 is formed in the side wall of the hydraulic cylinder 41. One end of the diversion groove 48 is communicated with the contraction drive chamber oil inlet and outlet nozzle 44, and the other end is communicated with the contraction drive chamber 47; a telescopic shaft 42 is fixedly installed at one end of the piston 45 facing the contraction drive chamber 47. One end of the telescopic shaft 42 is hermetically slid and extended to the outside of the hydraulic cylinder 41 and is fixedly connected to the hammer head 2; The hydraulic pumping mechanism includes a hydraulic oil tank, and two groups of oil guide pipes are connected and installed on the hydraulic oil tank. The end parts of the two groups of oil guide pipes are respectively communicated with the oil inlet and outlet nozzle 43 of the extension drive chamber and the oil inlet and outlet nozzle 44 of the contraction drive chamber, and two-way hydraulic pumps are installed on both groups of oil guide pipes; Among them, when it is necessary to drive the hydraulic telescopic mechanism 4 to extend, the two-way hydraulic pump continuously transports the hydraulic oil in the hydraulic oil tank into the extension drive chamber 46 through the oil inlet and outlet nozzle 43 of the extension drive chamber. At this time, the piston 45 inside the hydraulic cylinder 41 moves towards the contraction drive chamber 47 under the hydraulic action of the hydraulic oil. At the same time, the piston 45 drives the telescopic shaft 42 to gradually extend outwards, so that the telescopic shaft 42 drives the hammer head 2 at its end to move towards the central position of the six-sided top press 1; when pressure relief is required, the two-way hydraulic pump performs reverse hydraulic transmission, sucking the hydraulic oil in the extension drive chamber 46 outwards and transporting it towards the hydraulic oil tank, thereby reducing the hydraulic pressure in the extension drive chamber 46; When it is necessary to drive the hydraulic telescopic mechanism 4 to contract, the two-way hydraulic pump continuously transports the hydraulic oil in the hydraulic oil tank into the contraction drive chamber 47 through the oil inlet and outlet nozzle 44 of the contraction drive chamber. At this time, the piston 45 inside the hydraulic cylinder 41 moves towards 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 towards the outside of the six-sided top press 1.

[0034] Embodiment Five

[0035] Please refer to Figure 6 、 Figure 7 As shown, the difference between this embodiment and the above embodiment is that a rapid pressure relief mechanism 5 is further installed inside the hydraulic cylinder 41. The rapid 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 communicated through the pressure relief holes 51. The sealing plate 52 is rotatably installed at the end of the piston 45. The sealing plate 52 can abut and seal the pressure relief holes 51, and a through hole 53 that can be communicated with the pressure relief holes 51 is opened on the sealing plate 52. The rotation drive assembly can drive the sealing plate 52 to rotate; Among them, the through hole 53 is offset from the pressure relief hole 51, so that the sealing plate 52 abuts against and seals the pressure relief hole 51. When it is detected that the pressure of the hammer head 2 is overloaded and there is a risk of fracture, the sealing plate 52 can be driven to rotate rapidly by the rotation drive assembly, so that the through hole 53 on the sealing plate 52 is aligned with the pressure relief hole 51. At this time, the hydraulic oil in the extension drive chamber 46 can be rapidly transported to the contraction drive chamber 47 through the through hole 53 and the pressure relief hole 51 under the action of the hydraulic pressure difference, thereby relieving the pressure of the extension drive chamber 46. Compared with only sucking and relieving pressure through the hydraulic pump mechanism, the pressure can be relieved more quickly, so as to rapidly reduce the surface pressure of the hammer head 2 and prevent crack propagation and brittle fracture of the hammer head 2 caused by overpressure.

[0036] Embodiment Six

[0037] Please refer to Figures 6 - 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 on the inner side surface 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 to the plurality of magnetic positioning blocks 54 one by one. After the electromagnet 512 conducts electricity and generates magnetism, it can be magnetically fixedly connected to the corresponding magnetic positioning block 54. The torsion spring 510 is sleeved on the outer circle 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; 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 attracted and fixed to the corresponding magnetic positioning block 54, and then the sealing plate 52 is used to seal the piston 45 on the end face of the piston 45. At this time, the torsion spring 510 is in a state of torsional energy storage. When the pressure of the hammer head 2 is overloaded and pressure relief is required, the control system controls the electromagnet 512 to cut off the power and demagnetize, so that the electromagnet 512 is disengaged from the magnetic attraction and fixation with the magnetic positioning block 54, thereby releasing the locking of the sealing plate 52. After that, the sealing plate 52 rapidly rotates and moves under the action of the torsional elastic force of the torsion spring 510 to drive the through hole 53 and the pressure relief hole 51 to coincide, so that the extension drive chamber 46 and the contraction drive chamber 47 are communicated to relieve pressure. By driving the sealing plate 52 to rotate with the torsion spring 510 in a state of torsional energy storage, the rotation reaction speed of the sealing plate 52 can be improved, and the extension drive chamber 46 and the contraction drive chamber 47 can be communicated to relieve pressure more quickly.

[0038] Further, a secondary sealing plate 511 is rotatably installed at one end of the piston 45 opposite to the sealing plate 52. Through holes 53 corresponding to the pressure relief holes 51 one by one are also formed in the secondary sealing plate 511. An arc-shaped through groove 58 is further formed in the piston 45. A connecting column 59 fixedly connected between the sealing plate 52 and the secondary sealing plate 511 is slidably clamped in the through groove 58. By sealing both ends of the piston 45 with the sealing plate 52 and the secondary sealing plate 511, the sealing performance of the piston 45 can be improved, ensuring the normal operation of the hydraulic cylinder 41. And when the sealing plate 52 rotates and moves, the secondary 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 secondary sealing plate 511 coincide with the pressure relief holes 51, the connecting column 59 moves to the end of the through groove 58, so that the connecting column 59, the sealing plate 52 and the secondary sealing plate 511 are limited and braked by the end wall of the through groove 58, keeping the through holes 53 and the pressure relief holes 51 in a coincident state, and continuous diversion and pressure relief can be achieved.

[0039] Embodiment Seven

[0040] Please refer to Figures 6 - 9 As shown, the difference between this embodiment and the above embodiment is that the rotation driving assembly further includes a limit guiding groove 55 formed at one end of the piston 45. An arc-shaped rack 57 is slidably installed in the limit guiding groove 55, and the arc-shaped rack 57 is fixedly connected to the bottom surface of the sealing plate 52. A gear 56 meshing with the arc-shaped rack 57 is rotatably installed on one side of the limit guiding groove 55. A motor drivingly connected to the gear 56 is embedded and installed inside the piston 45. After the pressure relief is completed when the extension driving chamber 46 and the contraction driving chamber 47 are communicated, the motor is used to drive the gear 56 to rotate. At this time, the gear 56 meshingly drives the arc-shaped rack 57 to slide along the limit guiding groove 55. At the same time, the arc-shaped rack 57 drives the sealing plate 52 to rotate and reset in the reverse direction, so that the through hole 53 on the sealing plate 52 is staggered from the pressure relief hole 51. And when the sealing plate 52 rotates in the reverse direction, the secondary sealing plate 511 is driven to rotate in the reverse direction synchronously through the connecting column 59, so that the sealing plate 52 and the secondary sealing plate 511 abut against and seal the pressure relief hole 51 again to separate the extension driving chamber 46 and the contraction driving chamber 47. And at this time, the magnetic positioning block 54 moves directly above the electromagnet 512. The electromagnet 512 is controlled by the control system to conduct electricity to generate magnetism, so that the electromagnet 512 and the corresponding magnetic positioning block 54 are magnetically attracted and fixed, further positioning and locking the sealing plate 52 again.

[0041] Embodiment Eight

[0042] This embodiment discloses a method for processing diamond with high thermal conductivity function. The specific steps are as follows: Fill the raw materials for processing diamond with high thermal conductivity function into a heating mold, wrap a pyrophyllite block outside the heating mold, and place the pyrophyllite block on the top surface of the bottom hammer 2. Hydraulic oil is pumped into the extension drive chambers 46 inside the six hydraulic telescopic mechanisms 4 synchronously through a hydraulic pumping mechanism to drive the six hydraulic telescopic mechanisms 4 to extend synchronously. Furthermore, the six hydraulic telescopic mechanisms 4 drive the six hammer heads 2 to move synchronously towards the central position of the six-sided top press 1 from different directions, enabling the six hammer heads 2 to extrude different faces of the pyrophyllite respectively, and then extruding the raw material in the heating die. At the same time, the positive and negative electrodes on the upper and lower hammer heads 2 are electrically connected to the heating die to energize and heat the heating die. Finally, the raw material reacts under high temperature and high pressure to generate diamond with high thermal conductivity function. 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 pressure in the extension drive chamber 46 to reduce the pressure on the surface of the hammer head 2.

[0043] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not elaborate on all the details and do not limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the invention, so that those skilled in the art can well understand and utilize the invention.

Claims

1. A top hammer device for a six-sided 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. A hammer head is fixedly installed at the telescopic end of each hydraulic telescopic mechanism. An extension drive chamber for driving the hydraulic telescopic mechanism to extend and a contraction drive chamber for driving the hydraulic telescopic mechanism to contract are arranged inside the hydraulic telescopic mechanism. The extension drive chamber and the contraction drive chamber are both connected with a hydraulic pumping mechanism; A pressure detection mechanism capable of detecting the surface pressure of the hammer head is installed on the hammer head. The pressure detection mechanism is in signal connection with the control system of the six-sided top press, so that the control system can receive the pressure information detected by the pressure detection mechanism and can drive the hydraulic pumping mechanism to suck and relieve pressure in the extension drive chamber when the pressure of the hammer head is overloaded.

2. The top hammer device of a six-sided press according to claim 1, characterized in that: An extrusion surface is arranged at the front end of the hammer head, and a plurality of inclined sealing surfaces are arranged on the outer ring of the front end of the hammer head.

3. The anvil device of a six-side 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 inlaid and installed at the center position of the extrusion surface, and the thin film strain gauge is inlaid and installed at the edge position of the sealing surface.

4. The anvil device of a six-side top press according to claim 3, characterized in that: A protective housing is arranged on the surface of the micro piezoelectric sensor. The protective housing is a titanium alloy or stainless steel housing, and ceramic insulation coatings are applied on the surfaces of the protective housing and the thin film strain gauge.

5. The anvil device of a six-side top press according to claim 3, characterized in that: A micro wireless transmitter is inlaid and installed inside the hammer head. The micro piezoelectric sensor and the thin film strain gauge are both in signal connection with the control system of the six-sided top press through the micro wireless transmitter.

6. The top hammer device of a six-sided press according to claim 1, characterized in that: The hydraulic telescopic mechanism 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 drive chamber and a contraction drive chamber. An extension drive chamber oil inlet and outlet nozzle and a contraction drive chamber oil inlet and outlet nozzle are fixedly installed on the outer wall of the hydraulic cylinder. The extension drive chamber oil inlet and outlet nozzle is communicated with the extension drive chamber. A diversion groove is arranged in the side wall of the hydraulic cylinder. One end of the diversion groove is connected with the contraction drive chamber oil inlet and outlet nozzle, and the other end is communicated with the contraction drive chamber; One end of the piston facing the contraction drive chamber is fixedly installed with a telescopic shaft. One end of the telescopic shaft extends out of the hydraulic cylinder in a sealed and sliding manner and is fixedly connected with the hammer head.

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

8. The anvil device of a six-side top press according to claim 6, characterized in that: A quick pressure relief mechanism is further 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 plurality of pressure relief holes are circumferentially distributed and arranged on the piston. The extension drive chamber and the contraction drive chamber can be communicated through the pressure relief holes. The sealing plate is rotatably installed at the end of the piston. The sealing plate can abut against and seal the pressure relief holes, and a through hole capable of being communicated with the pressure relief holes is arranged on the sealing plate. The rotation drive assembly can drive the sealing plate to rotate.

9. The top hammer device of a six-side top press according to claim 8, characterized in that: The rotation driving assembly includes a plurality of magnetic positioning blocks, a torsion spring and a plurality of electromagnets. The plurality of magnetic positioning blocks are circumferentially distributed and embedded on the inner side of the sealing plate. The plurality of electromagnets are circumferentially distributed and fixedly installed on one side of the piston and correspond to the plurality of magnetic positioning blocks one by one. After the electromagnets are energized to generate magnetism, they can be magnetically fixedly connected to the corresponding magnetic positioning blocks. The torsion spring is sleeved on the outer circle 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.

10. A method for processing diamond with high thermal conductivity function, which uses the cubic press anvil device described in any one of claims 1-9, characterized in that, The specific steps are as follows: Fill the raw materials for processing diamond with high thermal conductivity function into the heating mold, wrap the pyrophyllite block outside the heating mold, and place the pyrophyllite block on the top surface of the bottom hammer head; Through the hydraulic pumping mechanism, hydraulic oil is synchronously pumped into the extension drive chambers inside the six hydraulic telescopic mechanisms to drive the six hydraulic telescopic mechanisms to extend synchronously. Furthermore, the six hydraulic telescopic mechanisms drive the six hammer heads to move synchronously from different directions towards the center position of the six-sided top press, so that the six hammer heads respectively extrude different surfaces of the pyrophyllite, and then extrude the raw materials in the heating mold. At the same time, the positive and negative electrodes on the upper and lower hammer heads are electrically connected to the heating mold to make the heating mold energized and heated. Finally, the raw materials react under high temperature and high pressure to generate diamond with high thermal conductivity function; And 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 it is detected that the pressure of the hammer head is overloaded, the control system drives the hydraulic pumping mechanism to suck and relieve pressure in the extension drive chamber to reduce the pressure on the surface of the hammer head.

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