Full-automatic rapid alternating-current and direct-current pulse hot pressing furnace

Abstract

The invention discloses a full-automatic rapid alternating current and direct current pulse hot pressing furnace which comprises a control cabinet, a furnace body is fixedly installed on one side of the top of the control cabinet, a rack located on the upper portion of the furnace body is fixedly installed above the control cabinet, a rotating mechanism is arranged on one side of the front face of the furnace body, and a door plate covering an opening in the front face of the furnace body is arranged on the rotating mechanism. A pressure applying mechanism is arranged at the top of the rack, a lower water-cooling copper column is fixedly arranged on the lower portion in the furnace body, an upper water-cooling copper column penetrating through the furnace body is arranged on the upper portion in the furnace body, a conductive assembly is arranged in the control cabinet, and the conductive assembly is electrically connected with the lower water-cooling copper column and the upper water-cooling copper column. According to the invention, the PID heating system is adopted to realize that current directly passes through the lower water-cooling copper column and the upper water-cooling copper column, heating and sintering of a material are realized in the graphite mold, and the temperature monitor and the water-cooling assembly are utilized to protect the lower water-cooling copper column from being too high in temperature, so that high-temperature deformation of the lower water-cooling copper column is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hot pressing furnaces, and in particular to a full-automatic rapid alternating and direct current pulse hot pressing furnace. Background Art

[0002] Hot pressing furnace is a device that hot presses materials into shape under vacuum (or other atmosphere) conditions. It is widely used in hot pressing and sintering of cemented carbide, functional ceramics, powder metallurgy, etc. under high temperature and high vacuum conditions. Ceramic materials (such as high-purity alumina / yttrium oxide / lanthanum oxide) are generally powdered raw materials that pass through a sintering furnace to obtain the required properties or shape.

[0003] At present, a hot press furnace is a device that consolidates, shapes or modifies materials by heating and pressurizing at a specific temperature and pressure.

[0004] The working principle of hot pressing furnace is mainly based on heat transfer and pressure. During the hot pressing process, the furnace body transfers heat to the working area through thermal radiation or other heating methods to make the material reach the required temperature. At the same time, pressure is applied to the working area through hydraulic or pneumatic systems, so that the material undergoes physical or chemical changes under the combined action of heat and pressure, thereby obtaining the desired properties or shape.

[0005] The traditional thermal radiation heating method has a slow heating speed and a long sintering time, and the heat cannot be transferred to the inside of the workpiece more evenly. Therefore, it is urgent to design a fully automatic fast AC / DC pulse hot pressing furnace to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a fully automatic rapid AC / DC pulse hot pressing furnace to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A fully automatic fast AC / DC pulse hot pressing furnace, comprising a control cabinet, a furnace body is fixedly installed on one side of the top of the control cabinet, a stand located on the upper part of the furnace body is fixedly installed above the control cabinet, a rotating mechanism is arranged on the front side of the furnace body, a door panel covering the front opening of the furnace body is arranged on the rotating mechanism, the rotating mechanism is at least used for fully automatic opening and closing of the door panel on the furnace body, a plurality of limiting components are arranged on the outer side of the front of the furnace body, the limiting components are at least used for sealing and fixing the door panel after closing on the furnace body, a pressure mechanism is arranged on the top of the stand, a lower water-cooled copper column is fixedly arranged at the lower part of the furnace body, the An upper water-cooled copper column that penetrates the furnace body is arranged above the interior of the furnace body, and the top of the upper water-cooled copper column is connected to the pressure-applying mechanism, a conductive component is arranged inside the control cabinet, and the conductive component is electrically connected to the lower water-cooled copper column and the upper water-cooled copper column, a graphite mold is arranged between the lower water-cooled copper column and the upper water-cooled copper column, a cooling component extending to the outside of the furnace body is arranged on the outer side of the lower water-cooled copper column, and the cooling component is at least used for cooling the lower water-cooled copper column, and a temperature monitor extending to the outside of the furnace body is arranged on one side of the lower water-cooled copper column and the upper water-cooled copper column, and the temperature monitor is at least used for real-time measurement of the temperature of the lower water-cooled copper column and the upper water-cooled copper column.

[0009] Furthermore, the cooling assembly includes an inlet water cooling pipe and a drain water cooling pipe connected to the lower water-cooling copper column, and the inlet water cooling pipe and the drain water cooling pipe extend to the outside of the furnace body. The temperature monitor includes a thermocouple connected to the lower water-cooling copper column and the upper water-cooling copper column, and the thermocouple extends to the outside of the furnace body.

[0010] Furthermore, the stand includes a plurality of columns fixed on the control cabinet, and a mounting plate is fixedly installed on the top of the columns, and the pressure mechanism is fixed on the top of the mounting plate.

[0011] Furthermore, a handle is fixedly mounted on an outer wall of one side of the door panel, and a perspective window is arranged on the door panel.

[0012] Furthermore, the rotating mechanism includes a connecting seat fixed on the outer wall of the door panel, a rotating arm is rotatably arranged inside the connecting seat, a mounting frame is arranged on the outer wall of the furnace body, and a rotating shaft is arranged inside the mounting frame, a gear group is arranged at the bottom end of the rotating shaft, one side of the gear group is transmission-connected to a stepper motor, the stepper motor is fixed on the top outer wall of the control cabinet, and the gear group is two mutually perpendicular bevel gears.

[0013] Furthermore, the limiting assembly includes a support fixed on the outer wall of the furnace body, a rotary cylinder is fixed on the front of the support, a transmission rod is installed on the output shaft of the rotary cylinder, and a synchronously rotating claw is provided at one end of the transmission rod, and the number of the limiting assemblies is at least four.

[0014] Furthermore, the pressure-applying mechanism includes a servo electric cylinder fixed on the outer wall of the top of the stand, and a pressure sensor is arranged at the bottom end of the servo electric cylinder.

[0015] Furthermore, both the lower water-cooled copper column and the upper water-cooled copper column are conductive, a positioning seat fixed on the control cabinet is provided at the bottom of the lower water-cooled copper column, and a corrugated cover is sleeved on the lower water-cooled copper column exposed outside the furnace body, a pressure-bearing connector connected to a pressure-applying mechanism is provided at the top of the upper water-cooled copper column, a protective cover is provided on the upper water-cooled copper column exposed outside the furnace body, and an insulating sheet is provided above the pressure-bearing connector.

[0016] Furthermore, the conductive component includes a transformer arranged inside the control cabinet, the transformer is provided with a fixed electrode plate electrically connected to the lower water-cooled copper column, one side of the transformer is provided with a lower conductive plate extending to the top of the control cabinet, and one side of the upper water-cooled copper column is electrically connected to the upper conductive plate.

[0017] Furthermore, the graphite mold is composed of a mold base and a mold core distributed up and down, and the two mold cores are externally sleeved with a sheath.

[0018] In the above technical scheme, the present invention provides a fully automatic fast AC / DC pulse hot pressing furnace, which adopts a PID heating system to realize that the current directly passes through the lower water-cooled copper column and the upper water-cooled copper column, and realizes the heating and sintering of the material in the graphite mold. The temperature monitor and the water-cooling component can be used to protect the lower water-cooled copper column from excessive temperature, thereby avoiding high-temperature deformation of the lower water-cooled copper column. The rotating mechanism and the limit assembly can be used to realize the fully automatic opening and closing of the door panel. The pressure mechanism can be used to apply pressure to the upper water-cooled copper column, so that the material can be hot-pressed in the graphite mold. The equipment has a fast heating speed and a short sintering time, thereby improving the efficiency of material sintering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 An angled structural stereogram of an embodiment of a fully automatic rapid AC / DC pulse hot pressing furnace of the present invention.

[0021] Figure 2 Another perspective structural diagram of a fully automatic rapid AC / DC pulse hot pressing furnace embodiment of the present invention is provided.

[0022] Figure 3A front view of a fully automatic rapid AC / DC pulse hot pressing furnace embodiment of the present invention without a control cabinet structure is provided.

[0023] Figure 4 A schematic diagram of the structure of a door panel in a closed state provided in an embodiment of a fully automatic rapid AC / DC pulse hot pressing furnace of the present invention.

[0024] Figure 5 A schematic diagram of the structure of a door panel in an open state provided in an embodiment of a fully automatic rapid AC / DC pulse hot pressing furnace of the present invention.

[0025] Figure 6 A schematic diagram of the structure of a pressure mechanism provided in an embodiment of a fully automatic rapid AC / DC pulse hot pressing furnace of the present invention.

[0026] Figure 7 A schematic structural diagram of a water-cooled copper column, a conductive component and a cooling component provided in an embodiment of a fully automatic rapid AC / DC pulse hot pressing furnace of the present invention.

[0027] Figure 8 A schematic diagram of the graphite mold structure provided for an embodiment of a fully automatic rapid AC / DC pulse hot pressing furnace of the present invention.

[0028] Fig. 9 The invention provides a fully automatic fast AC / DC pulse hot pressing furnace embodiment. Figure 8 First, fully open the structural section view in AA.

[0029] Description of reference numerals:

[0030] 1. Control cabinet; 2. Furnace body; 3. Stand; 31. Column; 32. Mounting plate; 4. Door panel; 41. Handle; 42. Perspective window; 5. Rotating mechanism; 51. Connecting seat; 52. Rotating arm; 53. Mounting frame; 54. Rotating shaft; 55. Gear set; 56. Stepping motor; 6. Limiting assembly; 61. Support; 62. Rotary cylinder; 63. Transmission rod; 64. Claw; 7. Pressing mechanism; 71. Servo electric cylinder; 72. Pressure sensor; 8. Lower water-cooled copper column; 81. Positioning seat; 82. Corrugated cover; 9. Upper water-cooled copper column; 91. Pressure-bearing connector; 92. Protective cover; 93. Insulating sheet; 10. Conductive component; 101. Transformer; 102. Lower conductive plate; 103. Upper conductive plate; 104. Fixed electrode plate; 11. Graphite mold; 111. Mold base; 112. Mold core; 113. Jacket; 12. Cooling component; 121. Inlet water cooling pipe; 122. Drain water cooling pipe; 13. Temperature monitor; 131. Thermocouple. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1-9 As shown, a fully automatic fast AC / DC pulse hot pressing furnace provided by an embodiment of the present invention comprises a control cabinet 1, a furnace body 2 is fixedly installed on one side of the top of the control cabinet 1, a stand 3 located on the upper part of the furnace body 2 is fixedly installed above the control cabinet 1, a rotating mechanism 5 is arranged on one side of the front of the furnace body 2, a door panel 4 covering the front opening of the furnace body 2 is arranged on the rotating mechanism 5, the rotating mechanism 5 is at least used for fully automatic opening and closing of the door panel 4 on the furnace body 2, a plurality of limiting components 6 are arranged on the outer side of the front of the furnace body 2, the limiting components 6 are at least used for sealing and fixing the door panel 4 after closing on the furnace body 2, a pressure mechanism 7 is arranged on the top of the stand 3, a lower water-cooled copper column 8 is fixedly arranged at the lower part of the furnace body 2, and the furnace An upper water-cooled copper column 9 that penetrates the furnace body 2 is arranged above the interior of the body 2, and the top of the upper water-cooled copper column 9 is connected to the pressure-applying mechanism 7, a conductive component 10 is arranged inside the control cabinet 1, and the conductive component 10 is electrically connected to the lower water-cooled copper column 8 and the upper water-cooled copper column 9, a graphite mold 11 is arranged between the lower water-cooled copper column 8 and the upper water-cooled copper column 9, a cooling component 12 extending to the outside of the furnace body 2 is arranged on the outer side of the lower water-cooled copper column 8, and the cooling component 12 is at least used for cooling the lower water-cooled copper column 8, and a temperature monitor 13 extending to the outside of the furnace body 2 is arranged on one side of the lower water-cooled copper column 8 and the upper water-cooled copper column 9, and the temperature monitor 13 is at least used for real-time measurement of the temperature of the lower water-cooled copper column 8 and the upper water-cooled copper column 9.

[0033] In this embodiment, a control cabinet 1 is included, and a furnace body 2 is fixedly installed on one side of the top of the control cabinet 1;

[0034] Specifically, the furnace body 2 is a vacuum chamber, and the vacuum degree can reach below 10 Pa under the condition of using a mechanical pump.

[0035] In this embodiment, a stand 3 located on the upper part of the furnace body 2 is fixedly installed above the control cabinet 1;

[0036] Specifically, the stand 3 includes a plurality of columns 31 fixed on the control cabinet 1 , and a mounting plate 32 is fixedly mounted on the top of the columns 31 , and the pressure mechanism 7 is fixed on the top of the mounting plate 32 .

[0037] In this embodiment, a rotating mechanism 5 is provided on the front side of the furnace body 2, and a door panel 4 covering the front opening of the furnace body 2 is provided on the rotating mechanism 5. The rotating mechanism 5 is at least used for fully automatic opening and closing of the door panel 4 on the furnace body 2. A plurality of limiting components 6 are provided on the outer side of the front of the furnace body 2. The limiting components 6 are at least used for sealing and fixing the door panel 4 after it is closed on the furnace body 2.

[0038] Specifically, a handle 41 is fixedly mounted on one side outer wall of the door panel 4, and a perspective window 42 is provided on the door panel 4. The perspective window 42 is made of quartz material, which can withstand the high temperature of the furnace body 2, ensuring that an external operator can observe the sintering condition inside the furnace body 2;

[0039] Specifically, the rotating mechanism 5 includes a connecting seat 51 fixed on the outer wall of the door panel 4, a rotating arm 52 is rotatably arranged inside the connecting seat 51, a mounting frame 53 is arranged on the outer wall of the furnace body 2, and a rotating shaft 54 ​​is arranged inside the mounting frame 53, a gear set 55 is arranged at the bottom end of the rotating shaft 54, one side of the gear set 55 is connected to a stepping motor 56 for transmission, the stepping motor 56 is fixed on the top outer wall of the control cabinet 1, and the gear set 55 is two mutually perpendicular bevel gears. When the door panel 4 is opened, the stepping motor 56 is started to drive the gear set 55 to move, so that the rotating shaft 54 ​​drives the rotating arm 52 to rotate, and the rotating arm 52 is used to open the door panel 4 from the furnace body 2. When the door panel 4 is closed, the reverse movement described above can be performed;

[0040] Specifically, the limit assembly 6 includes a support 61 fixed on the outer wall of the furnace body 2, a rotary cylinder 62 is fixed on the front of the support 61, a transmission rod 63 is installed on the output shaft of the rotary cylinder 62, and a synchronously rotating claw 64 is provided at one end of the transmission rod 63. The number of limit assemblies 6 is at least four. After the door panel 4 is closed on the furnace body 2, the four limit assemblies 6 are started at the same time, the rotary cylinder 62 drives the transmission rod 63 to rotate, and the transmission rod 63 drives the claw 64 to rotate. The door panel 4 is fixed on the furnace body 2 by using the claw 64. When the door panel 4 is opened, the limit assembly 6 first releases the limit.

[0041] In this embodiment, a pressure mechanism 7 is provided on the top of the stand 3;

[0042] Specifically, the pressure-applying mechanism 7 includes a servo electric cylinder 71 fixed on the outer wall of the top of the stand 3, and a pressure sensor 72 is provided at the bottom end of the servo electric cylinder 71. When the servo electric cylinder 71 is started to move downward, the pressure sensor 72 and the upper water-cooled copper column 9 are driven to move downward together. After the upper water-cooled copper column 9 contacts the graphite mold 11, the servo electric cylinder 71 presses down. When the pressure sensor 72 detects that the specified pressure has been reached, the servo electric cylinder 71 stops.

[0043] In this embodiment, a lower water-cooled copper column 8 is fixedly disposed at the lower part of the furnace body 2, and an upper water-cooled copper column 9 penetrating the furnace body 2 is disposed at the upper part of the furnace body 2, and the top of the upper water-cooled copper column 9 is connected to the pressure mechanism 7;

[0044] Specifically, the lower water-cooled copper column 8 and the upper water-cooled copper column 9 are both conductive. A positioning seat 81 fixed on the control cabinet 1 is provided at the bottom of the lower water-cooled copper column 8, and a corrugated cover 82 is sleeved on the lower water-cooled copper column 8 exposed outside the furnace body 2. The corrugated cover 82 protects the lower water-cooled copper column 8 to prevent people from accidentally touching the charged lower water-cooled copper column 8. A pressure-bearing connector 91 connected to the pressure-applying mechanism 7 is provided on the top of the upper water-cooled copper column 9, and a protective cover 92 is provided on the upper water-cooled copper column 9 exposed outside the furnace body 2. The protective cover 92 can also be a corrugated cover. An insulating sheet 93 is provided above the pressure-bearing connector 91 to achieve the purpose of insulation, so that the diversion will not be transmitted to the pressure-applying mechanism 7.

[0045] In this embodiment, a conductive component 10 is disposed inside the control cabinet 1, and the conductive component 10 is electrically connected to the lower water-cooled copper column 8 and the upper water-cooled copper column 9;

[0046] Specifically, the conductive component 10 includes a transformer 101 arranged inside the control cabinet 1, and a fixed electrode plate 104 electrically connected to the lower water-cooled copper column 8 is arranged on the transformer 101. A lower conductive plate 102 extending to the top of the control cabinet 1 is arranged on one side of the transformer 101, and an upper conductive plate 103 is electrically connected to one side of the upper water-cooled copper column 9. As the pressure mechanism 7 moves downward, the upper conductive plate 103 moves downward to achieve circuit conduction between the upper conductive plate 103 and the lower conductive plate 102.

[0047] In this embodiment, a graphite mold 11 is provided between the lower water-cooled copper column 8 and the upper water-cooled copper column 9. The graphite mold 11 is made of graphite material. When current passes through it, the resistance value is large and the temperature can be quickly increased.

[0048] Specifically, the graphite mold 11 is composed of a mold base 111 and a mold core 112 distributed up and down. The two mold cores 112 are externally sleeved with a sleeve 113. The sleeve 113 is sleeved on the lower mold base 111, and the material is placed inside the sleeve 113. Then the upper mold core 112 is inserted into the sleeve 113, thereby realizing the filling of the material inside the graphite mold 11.

[0049] In this embodiment, a cooling assembly 12 extending to the outside of the furnace body 2 is provided on the outer side of the lower water-cooled copper column 8, and the cooling assembly 12 is at least used to cool the lower water-cooled copper column 8;

[0050] Specifically, the cooling assembly 12 includes an inlet water cooling pipe 121 and a drain water cooling pipe 122 connected to the lower water-cooled copper column 8. The inlet water cooling pipe 121 and the drain water cooling pipe 122 extend to the outside of the furnace body 2. Cooling water is injected into the inlet water cooling pipe 121 outside the furnace body 2. After the cooling water passes through the lower water-cooled copper column 8, it is finally discharged from the drain water cooling pipe 122, thereby cooling the lower water-cooled copper column 8.

[0051] In this embodiment, a temperature monitor 13 extending to the outside of the furnace body 2 is provided on one side of the lower water-cooled copper column 8 and the upper water-cooled copper column 9, and the temperature monitor 13 is at least used to measure the temperature of the lower water-cooled copper column 8 and the upper water-cooled copper column 9 in real time;

[0052] Specifically, the temperature monitor 13 includes a thermocouple 131 connected to the lower water-cooled copper column 8 and the upper water-cooled copper column 9, and the thermocouple 131 extends to the outside of the furnace body 2, and the thermocouple 131 is used to realize real-time temperature measurement of the lower water-cooled copper column 8 and the upper water-cooled copper column 9.

[0053] Working steps: 1. Place the sample powder inside the graphite mold 11;

[0054] 2. Place the graphite mold 11 on top of the lower water-cooled copper column 8 with the help of a robot;

[0055] 3. The pressure mechanism 7 moves downward, driving the upper water-cooled copper column 9 to descend, and pre-tightening the graphite mold 11;

[0056] Fourth, the rotating mechanism 5 is started, driving the door panel 4 to automatically close at the front opening of the furnace body 2, and then the limiting component 6 is started to achieve fixed sealing of the door panel 4 on the furnace body 2;

[0057] 5. Start the PID heating system inside the control cabinet 1, so that the conductive component 10 energizes the lower water-cooled copper column 8 and the upper water-cooled copper column 9. Since the resistance value of the graphite mold 11 is relatively large, heat energy will be generated here, and the heat energy is used to realize hot pressing molding of the material;

[0058] 6. When the graphite mold 11 is heated, the heat will be transferred to the lower water-cooled copper column 8 and the upper water-cooled copper column 9, especially the lower water-cooled copper column 8. When the temperature reaches above 700 degrees Celsius, it will deform. The temperature of the lower water-cooled copper column 8 and the upper water-cooled copper column 9 is detected in real time by the temperature monitor 13. When the temperature is too high, the cooling component 12 is started to cool the lower water-cooled copper column 8.

[0059] 7. After the material is sintered, the limit assembly 6 is released, the rotating mechanism 5 drives the door panel 4 to open automatically, the upper water-cooled copper column 9 moves upward under the drive of the pressure mechanism 7, and the manipulator takes the graphite mold 11 out of the furnace body 2.

[0060] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fully automatic rapid AC / DC pulse hot pressing furnace, comprising a control cabinet (1), characterized in that: A furnace body (2) is fixedly mounted on one side of the top of the control cabinet (1); a stand (3) located on the upper part of the furnace body (2) is fixedly mounted above the control cabinet (1); a rotating mechanism (5) is arranged on the front side of the furnace body (2); a door panel (4) covering the front opening of the furnace body (2) is arranged on the rotating mechanism (5); the rotating mechanism (5) is at least used for fully automatic opening and closing of the door panel (4) on the furnace body (2); a plurality of limiting components (6) are arranged on the outer side of the front of the furnace body (2); the limiting components (6) are at least used for sealing and fixing the door panel (4) after it is closed on the furnace body (2); a pressure mechanism (7) is arranged on the top of the stand (3); a lower water-cooled copper column (8) is fixedly arranged at the lower part of the interior of the furnace body (2); a water-cooled copper column (8) penetrating the furnace body (2) is arranged at the upper part of the interior of the furnace body (2); ) and the top of the upper water-cooled copper column (9) is connected to the pressure mechanism (7); a conductive component (10) is arranged inside the control cabinet (1); the conductive component (10) is electrically connected to the lower water-cooled copper column (8) and the upper water-cooled copper column (9); a graphite mold (11) is arranged between the lower water-cooled copper column (8) and the upper water-cooled copper column (9); a cooling component (12) extending to the outside of the furnace body (2) is arranged on the outer side of the lower water-cooled copper column (8); the cooling component (12) is at least used for cooling the lower water-cooled copper column (8); a temperature monitor (13) extending to the outside of the furnace body (2) is arranged on one side of the lower water-cooled copper column (8) and the upper water-cooled copper column (9); the temperature monitor (13) is at least used for real-time measurement of the temperature of the lower water-cooled copper column (8) and the upper water-cooled copper column (9).

2. A fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The cooling assembly (12) comprises an inlet water cooling pipe (121) and a drain water cooling pipe (122) connected to the lower water cooling copper column (8), and the inlet water cooling pipe (121) and the drain water cooling pipe (122) extend to the outside of the furnace body (2). The temperature monitor (13) comprises a thermocouple (131) connected to the lower water cooling copper column (8) and the upper water cooling copper column (9), and the thermocouple (131) extends to the outside of the furnace body (2).

3. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The stand (3) comprises a plurality of columns (31) fixed on the control cabinet (1), and a mounting plate (32) is fixedly mounted on the top of the columns (31), and the pressure mechanism (7) is fixed on the top of the mounting plate (32).

4. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: A handle (41) is fixedly mounted on one side outer wall of the door panel (4), and a perspective window (42) is provided on the door panel (4).

5. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The rotating mechanism (5) comprises a connecting seat (51) fixed on the outer wall of the door panel (4), a rotating arm (52) is rotatably arranged inside the connecting seat (51), a mounting frame (53) is arranged on the outer wall of the furnace body (2), and a rotating shaft (54) is arranged inside the mounting frame (53), a gear set (55) is arranged at the bottom end of the rotating shaft (54), one side of the gear set (55) is transmission-connected to a stepping motor (56), the stepping motor (56) is fixed on the top outer wall of the control cabinet (1), and the gear set (55) is two mutually perpendicular bevel gears.

6. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The limiting assembly (6) comprises a support (61) fixed on the outer wall of the furnace body (2), a rotary cylinder (62) is fixed on the front of the support (61), a transmission rod (63) is installed on the output shaft of the rotary cylinder (62), and a synchronously rotating claw (64) is provided at one end of the transmission rod (63), and the number of the limiting assemblies (6) is at least four.

7. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The pressure-applying mechanism (7) comprises a servo electric cylinder (71) fixed on the outer wall of the top of the stand (3), and a pressure sensor (72) is arranged at the bottom end of the servo electric cylinder (71).

8. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The lower water-cooled copper column (8) and the upper water-cooled copper column (9) are both electrically conductive, a positioning seat (81) fixed to the control cabinet (1) is provided at the bottom of the lower water-cooled copper column (8), a corrugated cover (82) is sleeved on the lower water-cooled copper column (8) exposed outside the furnace body (2), a pressure-bearing connector (91) connected to the pressure-applying mechanism (7) is provided at the top of the upper water-cooled copper column (9), a protective cover (92) is provided on the upper water-cooled copper column (9) exposed outside the furnace body (2), and an insulating sheet (93) is provided above the pressure-bearing connector (91).

9. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The conductive component (10) comprises a transformer (101) arranged inside a control cabinet (1), the transformer (101) being provided with a fixed electrode plate (104) electrically connected to a lower water-cooled copper column (8), a lower conductive plate (102) extending to the top of the control cabinet (1) being provided on one side of the transformer (101), and an upper conductive plate (103) being electrically connected to one side of an upper water-cooled copper column (9).

10. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The graphite mold (11) is composed of a mold base (111) and a mold core (112) which are distributed up and down, and the two mold cores (112) are externally sleeved with a protective sleeve (113).

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