Hot pressing-thermal deformation device for neodymium-iron-boron magnet

Abstract

The utility model discloses a hot pressing-thermal deformation device for a neodymium-iron-boron magnet. The device comprises an upper punch component, a die component and a lower punch component, the mold assembly comprises a mold, and a mold cavity is formed in the mold; the die cavity comprises a first die cavity unit and a second die cavity unit, and the diameter of the first die cavity unit is larger than that of the second die cavity unit; the upper punch assembly comprises an upper punch and an upper punch driving element; a groove body is formed in the top of the upper punch connecting part, and the groove body is filled with a heat insulation material; the upper punch body part is provided with a temperature measuring channel, and an opening is formed in the side wall of the upper punch body part; the temperature measuring channel comprises a vertical part and an inclined part, the vertical part is arranged in the middle of the lower part of the upper punch body part, one end of the inclined part is communicated with the vertical part, and the other end of the inclined part is communicated with the opening; the lower punch assembly includes a lower punch and a lower punch drive element. According to the device, a sample can be subjected to hot pressing and thermal deformation at a constant temperature in the next step.

Description

Technical Field

[0001] The utility model relates to a hot pressing and hot deformation device for NdFeB magnets. Background Art

[0002] Hot-pressed and hot-deformed NdFeB permanent magnets are high-performance rare earth permanent magnets characterized by high magnetic properties, high stability, high density, and high orientation. They are widely used in the fields of electronics, communications, healthcare, and new energy vehicles. Hot pressing heats and pressurizes NdFeB magnetic powder to produce high-density isotropic magnets. Hot deformation, on the other hand, subjects the magnets to thermal rheological flow under high temperature and pressure, orienting them along their easy magnetization axis to produce anisotropic magnets.

[0003] CN116682661A discloses a thermal deformation mold, comprising an outer mold and an inner mold. The outer mold is made of stainless steel, and the inner mold is made of graphite. Both the outer mold and the inner mold are hollow cylindrical with both ends open. The outer mold is sleeved on the outside of the inner mold and is coaxial with the inner mold.

[0004] CN118197734A discloses a hot pressing mold and a hot deformation mold. The hot pressing mold includes an outer mold, a lower pressing head, a mold cavity, and an upper pressing head. The hot deformation mold includes a mold, a second lower pressing head, a hot pressing mold cavity, a second upper pressing head, and a hot pressing ring.

[0005] CN118156013A discloses a hot-pressed NdFeB manufacturing apparatus, comprising an upper ram, a lower ram, a mold cavity induction heating coil, a NdFeB cylindrical billet, a heating furnace, a sealing cover, and a mold cavity. The upper ram is fixed to an upper hydraulic cylinder, the lower ram is fixed to a lower hydraulic cylinder, the mold cavity is fixed to a lower platform, the mold cavity induction heating coil is fixed to the lower platform, and the sealing cover is positioned on the outermost side.

[0006] CN116190084A discloses a forward extrusion molding device for tile-shaped NdFeB permanent magnets, comprising a spacer, a support tube, a die sleeve, a sleeve, and a pressure column. Both the support tube and the sleeve are hollow cylinders with open top and bottom ends. The pressure column is located within the sleeve's inner cavity and is used for forward extrusion of the blank. The bottom end of the support tube is mounted on the spacer. Both the top opening of the support tube and the bottom opening of the sleeve are provided with truncated cone-shaped grooves. The die sleeve is positioned between the support tube and the sleeve. The top end of the die sleeve is provided with a circular boss that mates with the groove at the bottom end of the sleeve, and the bottom end of the die sleeve is provided with a circular boss that mates with the groove at the top end of the support tube. The die sleeve has a continuous deformation inner cavity, which, from top to bottom, comprises a connection zone, a transition zone, and a deformation zone. The cross-section of the connection zone is identical to and mates with the cross-section of the sleeve's inner cavity. The transition zone is funnel-shaped, and the deformation zone is tile-shaped with a predetermined thickness.

[0007] The above device can only perform hot pressing or hot deformation. In this way, the mold needs to be replaced during hot pressing and hot deformation, and the temperature needs to be repeatedly increased, which causes the grain size of the magnet to grow and the magnetic properties to decrease. Utility Model Content

[0008] In light of this, the present invention aims to provide a hot pressing and hot deformation device for NdFeB magnets. This device enables hot pressing and hot deformation of samples in a single step at a constant temperature, achieving more precise control of the hot pressing and hot deformation temperature and minimizing temperature fluctuations. Furthermore, this device can reduce the grain size of NdFeB magnets and improve their magnetic properties.

[0009] The above objectives are achieved through the following technical solutions.

[0010] The utility model provides a hot pressing and hot deformation device for NdFeB magnets, comprising an upper punch assembly, a die assembly and a lower punch assembly;

[0011] The mold assembly includes a mold having a mold cavity therein; the mold cavity includes a first mold cavity unit and a second mold cavity unit, the first mold cavity unit is located above the second mold cavity unit and is connected to the second mold cavity unit, and the diameter of the first mold cavity unit is larger than the diameter of the second mold cavity unit; the upper and lower ends of the mold cavity are both open ends;

[0012] The upper punch assembly includes an upper punch and an upper punch driving element; the upper punch driving element is configured to drive the upper punch to move in a vertical direction; the upper punch includes an upper punch connecting portion and an upper punch body portion, the upper punch connecting portion is connected to the upper punch body portion, the upper punch connecting portion is disposed above the die, and the diameter of the upper punch body portion matches the first die cavity unit;

[0013] A groove is formed on the top of the upper punch connection portion, and the groove is filled with heat insulation material;

[0014] The upper punch body is provided with a temperature measuring channel, and the side wall of the upper punch body is provided with an opening; the temperature measuring channel includes a vertical portion and an inclined portion, the vertical portion is provided at the lower portion of the upper punch body and is centrally arranged, one end of the inclined portion is connected to the vertical portion, and the other end of the inclined portion is connected to the opening; the temperature measuring channel is configured to accommodate a temperature measuring thermocouple;

[0015] The lower punch assembly includes a lower punch and a lower punch driving element; the lower punch driving element is configured to drive the lower punch to move in a vertical direction; the lower punch includes a lower punch connecting portion and a lower punch body portion, the lower punch connecting portion is connected to the lower punch body portion, the lower punch connecting portion is arranged below the mold, and the diameter of the lower punch body portion matches the second mold cavity unit.

[0016] According to the hot pressing and hot deformation device of the present invention, preferably, the hot pressing and hot deformation device also includes a temperature measuring thermocouple; the temperature measuring thermocouple includes a temperature measuring thermocouple body and a connecting wire, the temperature measuring thermocouple body is connected to the connecting wire, the temperature measuring thermocouple body is arranged in the vertical part, and the connecting wire is arranged in the inclined part.

[0017] According to the hot pressing and hot deformation device of the present invention, preferably, the projection of the second mold cavity unit on the horizontal plane falls within the range of the projection of the upper punch body on the horizontal plane, and the projection of the lower punch body on the horizontal plane falls within the range of the projection of the first mold cavity unit on the horizontal plane.

[0018] The ratio of the diameter of the first cavity unit to the diameter of the second cavity unit is 1.6 to 3.5:1.

[0019] According to the hot pressing and hot deformation device of the present invention, preferably, the mold assembly also includes a fixed beam, a fixed beam through hole is provided on the fixed beam, the lower part of the mold is fixed to the fixed beam, and the fixed beam through hole is communicated with the mold cavity.

[0020] According to the hot pressing and hot deformation device of the present invention, preferably, the mold assembly further includes a mold pressing cover, and the mold is fixed to the fixed beam via the mold pressing cover.

[0021] According to the hot pressing and hot deformation device of the present invention, preferably, the upper punch assembly further includes an upper crossbeam;

[0022] The bottom of the upper punch driving element is fixed to the upper end surface of the upper crossbeam;

[0023] The upper punch connecting portion is fixed to the lower end surface of the upper cross beam.

[0024] According to the hot pressing and hot deformation device of the present invention, preferably, the upper punch assembly further includes an upper punch cover;

[0025] The upper punch connecting portion is fixed to the upper crossbeam through the upper punch pressing cover.

[0026] According to the hot pressing and hot deformation device of the present invention, preferably, the lower punch assembly further includes a lower crossbeam;

[0027] The top of the lower punch driving element is fixed to the lower end surface of the lower crossbeam;

[0028] The lower punch connecting portion is fixed to the upper end surface of the lower cross beam.

[0029] According to the hot pressing and hot deformation device of the present invention, preferably, the lower punch assembly further comprises an upper transition connection pad, a lower transition connection pad and a lower punch gland;

[0030] The lower punch connecting portion is fixed to the upper end surface of the upper transition connection pad through the lower punch gland;

[0031] The bottom of the upper transition connection pad is fixed to the upper end surface of the lower transition connection pad;

[0032] The bottom of the lower transition connection pad is fixed to the upper end surface of the lower cross beam.

[0033] According to the hot pressing and hot deformation device of the present invention, preferably, it also includes a box body; except for a part of the upper punch driving element and a part of the lower punch driving element located outside the box body, the remaining upper punch assembly, mold assembly and lower punch assembly are all located inside the box body.

[0034] The utility model discloses a hot pressing and hot deformation device for NdFeB magnets that can form NdFeB magnetic powder in a single step, completing both hot pressing and hot deformation. The slot provided in the upper punch connection portion of the device is filled with thermal insulation material, and a temperature measurement channel is provided within the upper punch body. This reduces the amplitude of temperature fluctuations during hot pressing and hot deformation, allowing for more precise control of hot pressing and hot deformation temperatures, reducing the grain size of the NdFeB magnets, and improving their magnetic properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The utility model is a structural schematic diagram of a hot pressing and hot deformation device for NdFeB magnets.

[0036] Figure 2 It is a structural schematic diagram of the upper punch of the utility model.

[0037] The reference numerals are as follows:

[0038] 1-upper punch driving element; 2-upper crossbeam; 301-upper punch connecting part; 3011-thermal insulation material; 302-upper punch body; 3021-temperature measuring channel; 4-mold; 401-first mold cavity unit; 402-second mold cavity unit; 5-fixed crossbeam; 601-lower punch body; 602-lower punch connecting part; 7-lower crossbeam; 8-upper punch cover; 9-mold cover; 10-lower punch cover; 11-upper transition connection pad; 12-lower transition connection pad; 13-box; 14-lower punch driving element; 15-temperature measuring thermocouple. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

[0040] The hot pressing and hot deformation device for NdFeB magnets of the present invention comprises an upper punch assembly, a die assembly, and a lower punch assembly. In certain embodiments, it also includes a housing. Each component is described in detail below.

[0041] <Mold components>

[0042] The mold assembly of the present invention includes a mold. In certain embodiments, it further includes one or more of a fixed crossbeam and a mold gland.

[0043] The mold of the utility model has a film cavity. The mold cavity includes a first mold cavity unit and a second mold cavity unit. The first mold cavity unit is located above the second mold cavity unit. The first mold cavity unit is connected to the second mold cavity unit. The diameter of the first mold cavity unit is greater than the diameter of the second mold cavity unit. The upper and lower ends of the mold cavity are both open ends. The center line of the first mold cavity unit can coincide with the center line of the second mold cavity unit. The ratio of the diameter of the first mold cavity unit to the diameter of the second mold cavity unit can be 1.6 to 3.5:1; preferably 1.8 to 2.5:1. The diameter of the first mold cavity unit can be 25 to 60 mm. The diameter of the second mold cavity unit can be 10 to 30 mm, preferably 15 to 25 mm.

[0044] The fixed crossbeam of the present invention is provided with a through hole for the fixed crossbeam. The lower portion of the mold is fixed to the fixed crossbeam. Specifically, the lower portion of the mold is fixed to the upper end surface of the fixed crossbeam. The through hole for the fixed crossbeam communicates with the mold cavity. In certain embodiments, the lower portion of the mold is fixed to the upper end surface of the fixed crossbeam via a mold gland.

[0045] <Upper punch assembly>

[0046] The upper punch assembly of the present invention comprises an upper punch and an upper punch driving element. In certain embodiments, it further comprises an upper punch cover and an upper crossbeam.

[0047] The upper punch includes an upper punch connecting portion and an upper punch body portion. The upper punch connecting portion is connected to the upper punch body portion. Specifically, the upper end of the upper punch body portion is connected to the middle portion of the upper punch connecting portion. The upper punch connecting portion and the upper punch body portion can be an integral structure.

[0048] The diameter of the upper punch body matches the diameter of the first die cavity unit. The diameter of the upper punch body is larger than the diameter of the second die cavity unit. Preferably, the center line of the upper punch body coincides with the center line of the first die cavity unit. The upper punch connecting portion is arranged above the mold. The upper punch body can extend into the first die cavity unit. In some embodiments, the length of the upper punch body is greater than the length of the first die cavity unit. The projection of the second die cavity unit on the horizontal plane falls within the range of the projection of the upper punch body on the horizontal plane.

[0049] The upper punch body is provided with a temperature measurement channel. An opening is provided on a sidewall of the upper punch body. The temperature measurement channel includes a vertical portion and an inclined portion. The vertical portion is centrally located below the upper punch body. One end of the inclined portion is connected to the vertical portion, and the other end of the inclined portion is connected to the opening.

[0050] The temperature measuring thermocouple includes a temperature measuring thermocouple body and a connecting wire. The temperature measuring thermocouple body is connected to the connecting wire. The temperature measuring thermocouple body is arranged in the vertical portion, and the connecting wire is arranged in the inclined portion.

[0051] The upper punch connecting portion is fixed to the upper crossbeam. Specifically, the upper punch connecting portion is fixed to the lower end surface of the upper crossbeam. In some embodiments, the upper punch connecting portion is fixed to the upper crossbeam via an upper punch gland.

[0052] A groove is formed at the top of the upper punch connection portion. The depth of the groove is less than the height of the upper punch connection portion. The horizontal projection of the groove can be circular. The horizontal projection of the groove falls within the horizontal projection of the upper punch connection portion. The groove is filled with a thermal insulation material. The thermal insulation material can be selected from mullite, asbestos, and the like.

[0053] The upper punch driving element is configured to drive the upper punch to move in a vertical direction. The upper punch driving element is fixed to the upper crossbeam. Specifically, the bottom of the upper punch driving element is fixed to the upper end surface of the upper crossbeam. The upper punch driving element can be a pneumatic cylinder or a hydraulic cylinder.

[0054] <Lower punch assembly>

[0055] The lower punch assembly of the present invention comprises a lower punch and a punch driving element. In certain embodiments, the lower punch assembly further comprises a lower crossbeam, an upper transition connection pad, a lower transition connection pad and a lower punch gland.

[0056] The lower punch includes a lower punch connecting portion and a lower punch body portion. The lower punch connecting portion is connected to the lower punch body portion. Specifically, the lower end of the lower punch is connected to the middle portion of the lower punch connecting portion. The lower punch connecting portion and the lower punch body portion can be an integral structure.

[0057] The diameter of the lower punch body portion matches the second die cavity unit. The diameter of the lower punch body portion is smaller than the diameter of the first die cavity unit. Preferably, the center line of the lower punch body portion coincides with the center line of the second die cavity unit. In some embodiments, a portion of the lower punch body portion is located in the second die cavity unit. In some embodiments, the length of the lower punch body portion is greater than or equal to the length of the second die cavity unit. The projection of the lower punch body portion on the horizontal plane falls within the range of the projection of the first die cavity unit on the horizontal plane.

[0058] The lower punch connection portion is arranged below the die. The lower punch connection portion is fixed to the lower crossbeam. The lower punch connection portion is fixed to the upper end face of the lower crossbeam. Specifically, the lower punch connection portion is fixed to the lower crossbeam via an upper transition connection pad and a lower transition connection pad. According to one embodiment of the present invention, the lower punch connection portion is connected to the upper end face of the upper transition connection pad via a lower punch pressure cover. The bottom of the upper transition connection pad is connected to the upper end face of the lower transition connection pad. The bottom of the lower transition connection pad is connected to the upper end face of the lower crossbeam.

[0059] The lower punch driving element is configured to drive the lower punch to move in a vertical direction. The lower punch driving element is fixed to the lower crossbeam. Specifically, the bottom of the lower punch driving element is fixed to the lower end surface of the lower crossbeam. The lower punch driving element can be a pneumatic cylinder or a hydraulic cylinder.

[0060] <Box>

[0061] With the exception of a portion of the upper punch drive element and a portion of the lower punch drive element located outside the box, the remaining upper punch assembly, die assembly, and lower punch assembly are all located inside the box. The box is a sealed structure, which ensures that the NdFeB magnetic powder is in an inert atmosphere during hot pressing and thermal deformation.

[0062] Example 1

[0063] like Figure 1 and Figure 2 As shown, the hot pressing and hot deformation device for NdFeB magnets of this embodiment includes an upper punch assembly, a die assembly, a lower punch assembly, a box 13 and a temperature measuring thermocouple 15 .

[0064] The mold assembly includes a mold 4 , a fixed beam 5 and a mold cover 9 .

[0065] The mold 4 has a mold cavity. The mold cavity includes a first mold cavity unit 401 and a second mold cavity unit 402. The first mold cavity unit 401 is located above the second mold cavity unit 402. The first mold cavity unit 401 and the second mold cavity unit 402 are connected. The center line of the first mold cavity unit 401 coincides with the center line of the second mold cavity unit 402. The diameter of the first mold cavity unit 401 is greater than the diameter of the second mold cavity unit 402. In this embodiment, the diameter of the first mold cavity unit 401 is 50 mm, and the diameter of the second mold cavity unit 402 is 27.4 mm. The upper and lower ends of the mold cavity are both open ends.

[0066] A through hole for the fixed beam 5 is provided on the fixed beam 5. The lower portion of the mold 4 is fixed to the upper end surface of the fixed beam 5 via a mold gland 9. The through hole for the fixed beam is in communication with the mold cavity.

[0067] The upper punch assembly includes an upper punch, an upper punch driving element 1 , an upper crossbeam 2 and an upper punch cover 8 .

[0068] The upper punch includes an upper punch connecting portion 301 and an upper punch body portion 302. The upper end of the upper punch body portion 302 is connected to the middle portion of the upper punch connecting portion 301. The upper punch connecting portion 301 and the upper punch body portion 302 can be an integral structure. The diameter of the upper punch body portion 302 matches the diameter of the first die cavity unit 401. The diameter of the upper punch body portion 302 is larger than the diameter of the second die cavity unit 402. The center line of the upper punch body portion 302 coincides with the center line of the first die cavity unit 401. The upper punch body portion 302 can extend into the first die cavity unit 401. The length of the upper punch body portion 302 is greater than the length of the first die cavity unit 401.

[0069] like Figure 2 As shown, a groove is formed at the top of the upper punch connection portion 301. The depth of the groove is less than the height of the upper punch connection portion 301. The horizontal projection of the groove can be circular. The horizontal projection of the groove falls within the horizontal projection of the upper punch connection portion 301. The groove is filled with a thermal insulation material 3011. The thermal insulation material 3011 can be selected from mullite, asbestos, and the like.

[0070] The upper punch body 302 is provided with a temperature measurement channel 3021. The sidewall of the upper punch body 302 is provided with an opening. The temperature measurement channel 3021 includes a vertical portion and an inclined portion. The vertical portion is centrally located below the upper punch body. One end of the inclined portion is connected to the vertical portion, and the other end of the inclined portion is connected to the opening.

[0071] The temperature measuring thermocouple 15 includes a temperature measuring thermocouple body and a connecting wire. The temperature measuring thermocouple body is connected to the connecting wire. The temperature measuring thermocouple body is arranged in the vertical part, and the connecting wire is arranged in the inclined part.

[0072] The upper punch connecting portion 301 is fixed to the lower end surface of the upper crossbeam 2 through the upper punch pressing cover 8 .

[0073] The bottom of the upper punch driving element 1 is fixed to the upper end surface of the upper crossbeam 2. The upper punch driving element 1 is used to drive the upper punch to move in the vertical direction. The upper punch driving element 1 can be a cylinder or a hydraulic cylinder.

[0074] The lower punch assembly includes a lower punch, a lower punch driving element 14 , a lower crossbeam 7 , a lower punch cover 10 , an upper transition connection pad 11 and a lower transition connection pad 12 .

[0075] The lower punch includes a lower punch connecting portion 602 and a lower punch body portion 601. The lower end of the lower punch body portion 601 is connected to the middle portion of the lower punch connecting portion 602. The lower punch connecting portion 602 and the lower punch body portion 601 can be an integral structure. The diameter of the lower punch body portion 601 matches the diameter of the second die cavity unit 402. The diameter of the lower punch body portion 601 is smaller than the diameter of the first die cavity unit 401. The center line of the lower punch body portion 601 coincides with the center line of the second die cavity unit 402. A portion of the lower punch body portion 601 is located in the second die cavity unit 402. The length of the lower punch body portion 601 is greater than the length of the second die cavity unit 402.

[0076] The lower punch connecting portion 602 is fixed to the upper end surface of the upper transition connection pad 11 through the lower punch cover 10 .

[0077] The bottom of the upper transition connection pad 11 is fixed to the upper end surface of the lower transition connection pad 12 .

[0078] The bottom of the lower transition connection pad 12 is fixed to the upper end surface of the lower cross beam 7 .

[0079] The top of the lower punch driving element 14 is fixed to the lower end surface of the lower cross beam 7. The lower punch driving element 14 is used to drive the lower punch to move in the vertical direction. The upper punch driving element 1 can be a cylinder or a hydraulic cylinder.

[0080] The projection of the second cavity unit 402 on the horizontal plane falls within the range of the projection of the upper punch body 302 on the horizontal plane. The projection of the lower punch body 601 on the horizontal plane falls within the range of the projection of the first cavity unit 401 on the horizontal plane.

[0081] Except for a portion of the upper punch driving element 1 and a portion of the lower punch driving element 14 which are located outside the box 13 , the remaining upper punch assembly, die assembly and lower punch assembly are all located inside the box 13 .

[0082] During use, NdFeB magnetic powder is placed in the second cavity unit 402, and the upper punch body 302 fills the first cavity unit 401. The lower punch driving element 14 pushes the lower punch body 601 to move upward, thereby hot pressing the NdFeB magnetic powder to form a NdFeB block. The lower punch body 601 moves upward so that the top of the lower punch body 601 is located at the junction of the first cavity unit 401 and the second cavity unit 402, thereby pushing the NdFeB magnetic block into the first cavity unit 401. The upper punch driving element 1 drives the upper punch body 302 to move downward, squeezing the NdFeB block, thereby completing the thermal deformation of the NdFeB block.

[0083] Example 2

[0084] Except that the diameter of the first cavity unit 401 is 25 mm and the diameter of the second cavity unit 402 is 13.6 mm, the rest is the same as in Example 1.

[0085] The present invention is not limited to the above-mentioned embodiments. Without departing from the essential content of the present invention, any deformation, improvement, and substitution that can be thought of by those skilled in the art shall fall within the scope of the present invention.

Claims

1. A hot pressing and hot deformation device for NdFeB magnets, characterized in that: The hot pressing and hot deformation device includes an upper punch assembly, a die assembly and a lower punch assembly; The mold assembly includes a mold having a mold cavity therein; the mold cavity includes a first mold cavity unit and a second mold cavity unit, the first mold cavity unit is located above the second mold cavity unit and is connected to the second mold cavity unit, and the diameter of the first mold cavity unit is larger than the diameter of the second mold cavity unit; the upper and lower ends of the mold cavity are both open ends; The upper punch assembly includes an upper punch and an upper punch driving element; the upper punch driving element is configured to drive the upper punch to move in a vertical direction; the upper punch includes an upper punch connecting portion and an upper punch body portion, the upper punch connecting portion is connected to the upper punch body portion, the upper punch connecting portion is disposed above the die, and the diameter of the upper punch body portion matches the first die cavity unit; A groove is formed on the top of the upper punch connection portion, and the groove is filled with heat insulation material; The upper punch body is provided with a temperature measuring channel, and the side wall of the upper punch body is provided with an opening; the temperature measuring channel includes a vertical portion and an inclined portion, the vertical portion is provided at the lower portion of the upper punch body and is centrally arranged, one end of the inclined portion is connected to the vertical portion, and the other end of the inclined portion is connected to the opening; the temperature measuring channel is configured to accommodate a temperature measuring thermocouple; The lower punch assembly includes a lower punch and a lower punch driving element; the lower punch driving element is configured to drive the lower punch to move in a vertical direction; the lower punch includes a lower punch connecting portion and a lower punch body portion, the lower punch connecting portion is connected to the lower punch body portion, the lower punch connecting portion is arranged below the mold, and the diameter of the lower punch body portion matches the second mold cavity unit.

2. The hot pressing and hot deformation device according to claim 1, characterized in that: The hot pressing and hot deformation device also includes a temperature measuring thermocouple; the temperature measuring thermocouple includes a temperature measuring thermocouple body and a connecting wire, the temperature measuring thermocouple body is connected to the connecting wire, the temperature measuring thermocouple body is arranged in the vertical part, and the connecting wire is arranged in the inclined part.

3. The hot pressing and hot deformation device according to claim 1, characterized in that: The projection of the second cavity unit on the horizontal plane falls within the range of the projection of the upper punch body on the horizontal plane, and the projection of the lower punch body on the horizontal plane falls within the range of the projection of the first cavity unit on the horizontal plane; The ratio of the diameter of the first cavity unit to the diameter of the second cavity unit is 1.6 to 3.5:

1.

4. The hot pressing and hot deformation device according to claim 1, characterized in that: The mold assembly further includes a fixed beam, a fixed beam through hole is provided on the fixed beam, the lower part of the mold is fixed to the fixed beam, and the fixed beam through hole is communicated with the mold cavity.

5. The hot pressing and hot deformation device according to claim 4, characterized in that: The mold assembly further comprises a mold pressing cover, and the mold is fixed on the fixed crossbeam via the mold pressing cover.

6. The hot pressing and hot deformation device according to claim 1, characterized in that: The upper punch assembly also includes an upper crossbeam; The bottom of the upper punch driving element is fixed to the upper end surface of the upper crossbeam; The upper punch connecting portion is fixed to the lower end surface of the upper cross beam.

7. The hot pressing and hot deformation device according to claim 6, characterized in that: The upper punch assembly also includes an upper punch gland; The upper punch connecting portion is fixed to the upper crossbeam through the upper punch pressing cover.

8. The hot pressing and hot deformation device according to claim 1, characterized in that: The lower punch assembly also includes a lower crossbeam; The top of the lower punch driving element is fixed to the lower end surface of the lower crossbeam; The lower punch connecting portion is fixed to the upper end surface of the lower cross beam.

9. The hot pressing and hot deformation device according to claim 8, characterized in that: The lower punch assembly also includes an upper transition connection pad, a lower transition connection pad and a lower punch gland; The lower punch connecting portion is fixed to the upper end surface of the upper transition connection pad through the lower punch gland; The bottom of the upper transition connection pad is fixed to the upper end surface of the lower transition connection pad; The bottom of the lower transition connection pad is fixed to the upper end surface of the lower cross beam.

10. The hot pressing and hot deformation device according to any one of claims 1 to 9, characterized in that: Also includes the box; Except for a part of the upper punch driving components and a part of the lower punch driving components which are located outside the box, the rest of the upper punch assembly, the die assembly and the lower punch assembly are all located inside the box.

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