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

Abstract

The utility model discloses a full-automatic rapid AC-DC 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 utility model, 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 materials 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 overhigh temperature and avoid high-temperature deformation of the lower water-cooling copper column.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot press furnace technical field, concretely relates to a full -automatic quick AC pulse hot press furnace. BACKGROUND

[0002] Hot press furnace is the equipment that material hot press forming under the condition of vacuum (or other atmosphere), is widely used in hard alloy, functional ceramics, powder metallurgy etc. under the condition of high temperature, high vacuum carries out hot press sintering treatment, and ceramic material (such as high purity alumina / yttria / lanthana) generally is the raw material of powder, obtains the performance or shape of demand through sintering furnace.

[0003] At present, hot press furnace is a kind of equipment that material is consolidated, formed or modified by heating and pressurizing under specific temperature and pressure.

[0004] The working principle of hot press furnace is mainly based on heat transfer and pressure action. In the hot pressing process, the furnace body transmits heat to the working area by heat radiation or other heating methods, so that the material reaches the required temperature. At the same time, the working area is subjected to pressure by hydraulic or pneumatic system, so that the material undergoes physical or chemical changes under the joint action of heat and pressure, thereby obtaining the required performance or shape.

[0005] The traditional heat radiation heating method has slow heating speed and long sintering time, and the heat cannot be more uniformly transmitted to the inside of the workpiece. Therefore, it is urgent to design a full-automatic quick AC pulse hot press furnace to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims to provide a kind of full-automatic quick AC pulse hot press furnace to solve the above deficiencies in prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0008] The utility model provides an automatic quick AC-DC pulse hot pressing furnace, including the control cabinet, one side of the top of control cabinet is fixedly installed the furnace body, the top of control cabinet is fixedly installed the gantry in the upper portion of furnace body, the positive side of furnace body is provided with rotating mechanism, be provided with the door plate that covers the positive side opening of furnace body on rotating mechanism, rotating mechanism is used at least for the automatic opening and closing of door plate on furnace body, the positive outside of furnace body is provided with a plurality of limiting components, limiting component is used at least for the sealing fixed of door plate after closing on furnace body, the top of gantry is provided with pressure mechanism, the lower portion of inside furnace body is fixedly provided with the lower water cooling copper column, the inside upper portion of furnace body is provided with the upper water cooling copper column that passes through furnace body, and the top of upper water cooling copper column is connected with pressure mechanism, the inside of control cabinet is provided with conducting component, conducting component is electrically connected with lower water cooling copper column and upper water cooling copper column, be provided with graphite mould between lower water cooling copper column and upper water cooling copper column, the outside of lower water cooling copper column is provided with cooling assembly that extends to the outside of furnace body, cooling assembly is used at least for the cooling of lower water cooling copper column, one side of lower water cooling copper column and upper water cooling copper column is provided with temperature monitor that extends to the outside of furnace body, temperature monitor is used at least for the real-time measurement of temperature of lower water cooling copper column and upper water cooling copper column.

[0009] Further, the cooling assembly includes a water inlet pipe and a drain pipe connected to the lower water cooling copper column, the water inlet pipe and the drain pipe extend to the outside of the furnace body, and 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] Further, the gantry includes a plurality of vertical columns fixed to the control cabinet, and an installation plate is fixedly installed on the top of the vertical columns, and the pressure mechanism is fixed to the top of the installation plate.

[0011] Further, a handle is fixedly installed on one side of the outer wall of the door plate, and a perspective window is provided on the door plate.

[0012] Further, the rotating mechanism includes a connecting seat fixed to the outer wall of the door plate, a rotating arm is rotatably arranged in the connecting seat, an installation bracket is arranged on the outer wall of the furnace body, a rotating shaft is arranged in the installation bracket, a gear set is arranged at the bottom end of the rotating shaft, a stepping motor is drivingly connected to one side of the gear set, the stepping motor is fixed to the top outer wall of the control cabinet, and the gear set is two mutually perpendicular bevel gears.

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

[0014] Further, the pressure applying mechanism comprises a servo cylinder fixed on the outer wall of the top of the rack, and a pressure sensor is arranged at the bottom end of the servo cylinder.

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

[0016] Further, the electric conduction assembly comprises a transformer arranged in the control cabinet, a fixed electrode plate electrically connected with the lower water-cooled copper column is arranged on the transformer, a lower electric conduction plate extending to above the control cabinet is arranged on one side of the transformer, and an upper electric conduction plate is electrically connected with one side of the upper water-cooled copper column.

[0017] Further, the graphite mold is composed of the mold base and the mold core distributed upwards and downwards, and sheaths are sleeved on the outer parts of the two mold cores.

[0018] In the technical scheme, the full-automatic rapid AC-DC pulse hot-pressing furnace provided by the utility model realizes that the current directly passes through the lower water-cooled copper column and the upper water-cooled copper column by adopting the PID heating system, and the heating and sintering of the material are realized in the graphite mold; the temperature of the lower water-cooled copper column can be protected from being too high by using the temperature monitor and the water-cooled assembly, so that the high-temperature deformation of the lower water-cooled copper column is avoided; the full-automatic opening and closing of the door plate are realized by using the rotating mechanism and the limiting assembly; the upper water-cooled copper column can be pressed by using the pressure applying mechanism, so that the material can be hot-pressed in the graphite mold; the equipment has the advantages of fast heating speed, short sintering time and improved sintering efficiency of the material. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 It is an angle structure perspective view provided by an embodiment of the full-automatic rapid AC-DC pulse hot-pressing furnace of the utility model.

[0021] Figure 2 It is another angle structure perspective view provided by an embodiment of the full-automatic rapid AC-DC pulse hot-pressing furnace of the utility model.

[0022] Figure 3The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the main view of door plate structure of removing control cabinet.

[0023] Figure 4 The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the schematic diagram of door plate closing state structure.

[0024] Figure 5 The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the schematic diagram of door plate opening state structure.

[0025] Figure 6 The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the schematic diagram of pressure applying mechanism structure.

[0026] Figure 7 The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the schematic diagram of water cooling copper column, conducting assembly and cooling assembly structure.

[0027] Figure 8 The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the schematic diagram of graphite mould structure.

[0028] Figure 9 The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the schematic diagram of along Figure 8 The utility model provides a full automatic quick AC-DC pulse hot pressing furnace embodiment provided with the schematic diagram of along

[0029] Mark explanation:

[0030] 1, control cabinet;2, furnace body;3, rack;31, stand;32, mounting plate;4, door plate;41, handle;42, perspective window;5, rotating mechanism;51, connecting seat;52, rotating arm;53, mounting frame;54, rotating shaft;55, gear set;56, step motor;6, limit component;61, support;62, rotary cylinder;63, transmission rod;64, claw;7, pressure applying mechanism;71, servo electric cylinder;72, pressure sensor;8, lower water cooling copper column;81, positioning seat;82, bellows cover;9, upper water cooling copper column;91, pressure bearing connecting piece;92, protective cover;93, insulating sheet;10, conducting assembly;101, transformer;102, lower conducting plate;103, upper conducting plate;104, fixed electrode plate;11, graphite mould;111, mould seat;112, mould core;113, sheath;12, cooling assembly;121, inlet water cooling pipe;122, drainage water cooling pipe;13, temperature monitor;131, thermocouple. Specific implementation

[0031] In order to make the technical personnel of the prior art better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the drawings.

[0032] As shown in Figures 1-9 The utility model discloses a kind of full-automatic quick AC-DC pulse hot-pressing furnace provided in the embodiment, including control cabinet 1, furnace body 2 is fixedly installed in the top side of control cabinet 1, control cabinet 1 is fixedly installed with gantry 3 located at the upper portion of furnace body 2 above, the front side of furnace body 2 is provided with rotating mechanism 5, rotating mechanism 5 is provided with door plate 4 covering the front opening of furnace body 2, rotating mechanism 5 is at least used for the full-automatic opening and closing of door plate 4 on furnace body 2, the outer side of the front of furnace body 2 is provided with several limit components 6, limit component 6 is at least used for the sealing fixation of door plate 4 after being closed on furnace body 2, the top of gantry 3 is provided with pressure applying mechanism 7, lower water-cooled copper column 8 is fixedly arranged in the inside of furnace body 2 below, upper water-cooled copper column 9 is arranged in the inside of furnace body 2 above, and upper water-cooled copper column 9 is connected with pressure applying mechanism 7 at the top, the inside of control cabinet 1 is provided with electrically conductive component 10, electrically conductive component 10 is electrically connected with lower water-cooled copper column 8 and upper water-cooled copper column 9, graphite mould 11 is arranged between lower water-cooled copper column 8 and upper water-cooled copper column 9, cooling component 12 is arranged on the outside of lower water-cooled copper column 8 and extends to the outside of furnace body 2, cooling component 12 is at least used for the cooling of lower water-cooled copper column 8, temperature monitor 13 is arranged on one side of lower water-cooled copper column 8 and upper water-cooled copper column 9 and extends to the outside of furnace body 2, and temperature monitor 13 is at least used for the real-time measurement of the temperature of lower water-cooled copper column 8 and upper water-cooled copper column 9.

[0033] In the embodiment, including control cabinet 1, furnace body 2 is fixedly installed in the top side of control cabinet 1;

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

[0035] In the embodiment, gantry 3 is fixedly installed on the upper portion of control cabinet 1 above;

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

[0037] In the embodiment, the front side of furnace body 2 is provided with rotating mechanism 5, rotating mechanism 5 is provided with door plate 4 covering the front opening of furnace body 2, and rotating mechanism 5 is at least used for the full-automatic opening and closing of door plate 4 on furnace body 2, and the outer side of the front of furnace body 2 is provided with several limit components 6, and limit component 6 is at least used for the sealing fixation of door plate 4 after being closed on furnace body 2;

[0038] Specifically, one side of the outer wall of the door plate 4 is fixedly provided with a handle 41, and the door plate 4 is provided with a perspective window 42. The perspective window 42 is made of quartz stone material and can withstand the high temperature of the furnace body 2, so that the operator outside can observe the sintering condition inside the furnace body 2;

[0039] Specifically, the rotating mechanism 5 includes a connecting seat 51 fixed to the outer wall of the door plate 4, a rotating arm 52 rotatably arranged in the connecting seat 51, an installation rack 53 arranged on the outer wall of the furnace body 2, and a rotating shaft 54 arranged in the installation rack 53. The bottom end of the rotating shaft 54 is provided with a gear set 55, one side of the gear set 55 is drivingly connected with a stepping motor 56, and the stepping motor 56 is fixed to the top outer wall of the control cabinet 1. The gear set 55 is two mutually perpendicular bevel gears. When the door plate 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 door plate 4 is opened from the furnace body 2 by the rotating arm 52. When the door plate 4 is closed, the above-mentioned reverse movement can be performed;

[0040] Specifically, the limiting assembly 6 includes a support 61 fixed to the outer wall of the furnace body 2, a rotary air cylinder 62 fixed to the front of the support 61, a transmission rod 63 arranged on the output shaft of the rotary air cylinder 62, and a synchronously rotating claw 64 arranged at one end of the transmission rod 63. The number of the limiting assembly 6 is at least four. After the door plate 4 is closed on the furnace body 2, the four limiting assemblies 6 are simultaneously started, the rotary air cylinder 62 drives the transmission rod 63 to rotate, the transmission rod 63 drives the claw 64 to rotate, and the claw 64 fixes the door plate 4 on the furnace body 2. When the door plate 4 is opened, the limiting assembly 6 is first released.

[0041] In this embodiment, the top of the rack 3 is provided with a pressing mechanism 7.

[0042] Specifically, the pressing mechanism 7 includes a servo cylinder 71 fixed to the top outer wall of the rack 3, and a pressure sensor 72 arranged at the bottom end of the servo cylinder 71. The servo cylinder 71 is started to move downward to drive the pressure sensor 72 and the upper water-cooled copper column 9 to move downward together. After the upper water-cooled copper column 9 contacts the graphite mold 11, the servo cylinder 71 is pressed downward. When the pressure sensor 72 detects a specified pressure, the servo cylinder 71 stops.

[0043] In this embodiment, a lower water-cooled copper column 8 is fixedly arranged inside the furnace body 2, an upper water-cooled copper column 9 penetrating through the furnace body 2 is arranged inside the furnace body 2, and the top of the upper water-cooled copper column 9 is connected with the pressing mechanism 7.

[0044] Specifically, the lower water-cooled copper column 8 and the upper water-cooled copper column 9 both have electric conductivity, the lower water-cooled copper column 8 is provided with a positioning seat 81 fixed on the control cabinet 1, 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 plays a protective role on the lower water-cooled copper column 8, avoiding people from touching the live lower water-cooled copper column 8 by mistake, the upper water-cooled copper column 9 is provided at the top with a pressure bearing connecting piece 91 connected with the pressure applying mechanism 7, and a protective cover 92 is arranged on the upper water-cooled copper column 9 exposed outside the furnace body 2, the protective cover 92 can also be a corrugated cover, and an insulating sheet 93 is arranged above the pressure bearing connecting piece 91, so as to achieve the purpose of insulation and prevent the current from being transmitted to the pressure applying mechanism 7.

[0045] In the embodiment, the control cabinet 1 is internally provided with an electric conduction assembly 10 electrically connected with the lower water-cooled copper column 8 and the upper water-cooled copper column 9.

[0046] Specifically, the electric conduction assembly 10 comprises a transformer 101 arranged inside the control cabinet 1, the transformer 101 is provided with a fixed electrode plate 104 electrically connected with the lower water-cooled copper column 8, and the transformer 101 is provided at one side with a lower electric conduction plate 102 extending to above the control cabinet 1, and the upper water-cooled copper column 9 is electrically connected at one side with an upper electric conduction plate 103, with the downward movement of the pressure applying mechanism 7, the upper electric conduction plate 103 moves downward, so as to realize the circuit conduction between the upper electric conduction plate 103 and the lower electric conduction plate 102.

[0047] In the embodiment, a graphite mold 11 is arranged 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, and when current passes through the graphite mold 11, the resistance value is large, so that the graphite mold 11 can be quickly heated.

[0048] Specifically, the graphite mold 11 is composed of an upper and lower distributed mold base 111 and a mold core 112, the two mold cores 112 are externally sleeved with a sheath 113, the sheath 113 is sleeved on the lower mold base 111, materials are put into the inside of the sheath 113, and then the upper mold core 112 is inserted into the inside of the sheath 113, so as to realize the filling of the materials in the graphite mold 11.

[0049] In the embodiment, the lower water-cooled copper column 8 is externally provided with a cooling assembly 12 extending to outside the furnace body 2, and the cooling assembly 12 is used at least for cooling the lower water-cooled copper column 8.

[0050] Specifically, the cooling assembly 12 comprises a water inlet water-cooled pipe 121 and a water outlet water-cooled pipe 122 connected with the lower water-cooled copper column 8, the water inlet water-cooled pipe 121 and the water outlet water-cooled pipe 122 extend to outside the furnace body 2, cooling water is injected into the inside of the water inlet water-cooled pipe 121 outside the furnace body 2, and after passing through the lower water-cooled copper column 8, the cooling water is finally discharged from the water outlet water-cooled pipe 122, so as to realize the cooling of the lower water-cooled copper column 8.

[0051] In the embodiment, one side of the lower water-cooled copper column 8 and the upper water-cooled copper column 9 is provided with a temperature monitor 13 extending to the outside of the furnace body 2, and the temperature monitor 13 is used for measuring 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 comprises a thermocouple 131 connected with 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 real-time temperature measurement of the lower water-cooled copper column 8 and the upper water-cooled copper column 9 is realized by using the thermocouple 131.

[0053] Working steps: I. The sample powder is placed in the graphite mold 11;

[0054] II. The graphite mold 11 is placed on the top of the lower water-cooled copper column 8 by cooperating with the mechanical hand;

[0055] III. The pressing mechanism 7 moves downward to drive the upper water-cooled copper column 9 to descend, and the graphite mold 11 is pre-pressed tightly;

[0056] IV. The rotating mechanism 5 is started to drive the door plate 4 to automatically close at the front opening of the furnace body 2, and then the limiting assembly 6 is started to realize the fixed sealing of the door plate 4 on the furnace body 2;

[0057] V. The PID heating system in the control cabinet 1 is started to make the conductive assembly 10 electrify the lower water-cooled copper column 8 and the upper water-cooled copper column 9, and since the resistance value of the graphite mold 11 is large, heat energy is generated at the graphite mold 11, and the heat energy is used to realize the hot-press forming of the material;

[0058] VI. When the graphite mold 11 is heated, the heat is transmitted to the lower water-cooled copper column 8 and the upper water-cooled copper column 9, and mainly to the lower water-cooled copper column 8, and when the temperature reaches above 700 degrees Celsius, the lower water-cooled copper column 8 is deformed, and 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, and when the temperature is too high, the cooling assembly 12 is started to realize the cooling of the lower water-cooled copper column 8;

[0059] VII. After the sintering of the material is completed, the limiting assembly 6 is released, the rotating mechanism 5 drives the door plate 4 to automatically open, the upper water-cooled copper column 9 moves upward under the driving of the pressing mechanism 7, and the mechanical hand takes out the graphite mold 11 from the inside of the furnace body 2.

[0060] The above describes certain exemplary embodiments of the present application by way of illustration only, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above description and drawings are illustrative in nature, and should not be construed as limiting the scope of the claims of the present application.

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 provided on the front side of the furnace body (2), 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 assemblies (6) are provided on the outer side of the front of the furnace body (2), the limiting assemblies (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 provided on the top of the stand (3), a lower water-cooled copper column (8) is fixedly provided at the lower part of the interior of the furnace body (2), and a plurality of limiting assemblies (6) are provided on the upper part of the interior of the furnace body (2) that penetrates 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 provided 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 provided 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 provided on the outside 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 provided 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. The fully automatic rapid AC / DC pulse hot pressing furnace according to claim 1, characterized in that: The cooling assembly (12) includes a water inlet cooling pipe (121) and a water outlet cooling pipe (122) connected to the lower water-cooling copper column (8), and the water inlet cooling pipe (121) and the water outlet cooling pipe (122) extend to the outside of the furnace body (2). The temperature monitor (13) includes 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) 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).

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) includes a connecting seat (51) fixed on the outer wall of the door panel (4), a rotating arm (52) is rotatably provided inside the connecting seat (51), a mounting frame (53) is provided on the outer wall of the furnace body (2), and a rotating shaft (54) is provided inside the mounting frame (53), a gear set (55) is provided at the bottom end of the rotating shaft (54), one side of the gear set (55) is 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 top outer wall of the platform (3), and a pressure sensor (72) is provided 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), and 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), and a protective cover (92) is provided on the upper water-cooled copper column (9) exposed outside the furnace body (2). 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) includes a transformer (101) arranged inside the control cabinet (1), a fixed electrode plate (104) electrically connected to a lower water-cooled copper column (8) being provided on the transformer (101), 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 the 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) distributed up and down, and the two mold cores (112) are externally sleeved with a sheath (113).

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