Energy-saving and efficient diffusion welding heating jig and diffusion welding machine
By introducing a heat insulation layer and an insulating structure into the heating fixture, using copper-steel composite materials and cooling troughs, the problem of heat conduction of the heating die core to the cooling plate is solved, the protection of the cooling plate and the energy consumption are reduced, and the welding efficiency is improved.
Patent Information
- Application Number
- CN202422574190.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-23
AI Technical Summary
When existing heating fixtures are welded at high temperatures, the heat of the heating die core is transmitted to the cooling plate through the conductive plate, resulting in an increase in the heat burden on the cooling plate, the cooling water pipe is prone to rupture, and energy consumption increases.
The thermal insulation layer and thermal insulation structure are adopted to reduce the heat conduction between the conductive layer and the cooling plate through the thermal insulation layer. The conductive thermal insulation plate of copper-steel composite material is used to form a circulating water path in combination with the cooling trough, which reduces the heat burden of the cooling plate and improves the efficiency of the heating core.
Effectively prevent the cooling water pipe from rupturing, reduce energy consumption, ensure that the heating die core quickly reaches and maintains the welding temperature, and improves welding efficiency and energy-saving effects.
Smart Images
Figure CN223277327U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of diffusion welding jigs, in particular to an energy-saving and efficient diffusion welding heating jig and a diffusion welding machine. Background Art
[0002] In industrial production, diffusion welding, as an important welding process, is widely used in different fields due to its advantages such as high joint strength and stable welding quality.
[0003] Currently, diffusion welding of copper foil is typically achieved using a heating jig. The existing heating jig consists of an upper and lower die base, each symmetrically constructed with a cooling plate, a conductive plate, and a heating core. The cooling plate is connected to a power supply via a copper busbar. The power supply provides the cooling plate with the required power based on production requirements. The cooling plate, conductive plate, and heating core are then energized sequentially. Once the heating core is energized, its internal temperature reaches the required welding temperature. The upper die base then drives the heating core toward the lower die base, bringing it into contact with the core, achieving diffusion welding of the copper foil.
[0004] However, when welding large products at high temperatures, due to the good thermal conductivity of the conductive plate of the above-mentioned heating jig, part of the heat of the heating core in the heating jig will be transferred from the conductive plate to the cooling plate in contact with it, increasing the heat burden of the cooling plate and causing the cold water pipes on both sides of the cooling plate to rupture. In addition, part of the heat of the heating core is transferred to the cooling plate by the conductive plate, and the heating core needs to consume more energy to reach the expected welding temperature, further increasing the heat burden of the cooling plate.
[0005] Therefore, there is an urgent need for an energy-saving and efficient diffusion welding heating fixture and a diffusion welding machine to solve the above problems. Utility Model Content
[0006] Based on the above, the purpose of the present invention is to provide an energy-saving and efficient diffusion welding heating jig and diffusion welding machine to solve the problem that when the existing heating jig is used to weld large products at high temperature, part of the heat of the heating core in the heating jig will be transferred from the conductive plate to the cooling plate in contact with it, thereby increasing the heat burden of the cooling plate and causing the cold water pipes on both sides of the cooling plate to rupture.
[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0008] A energy-saving and efficient diffusion welding heating jig, comprising an upper die base and a lower die base; the upper die base comprises a first cooling plate and a first conductive heat insulation plate; the first conductive heat insulation plate is arranged below the first cooling plate; a first heating core is provided on the first conductive heat insulation plate; both sides of the first heating core are provided with a first limiting assembly for fixing the first heating core; the lower die base is arranged below the first heating core; the lower die base comprises a second cooling plate and a second conductive heat insulation plate; the second conductive heat insulation plate is arranged below the first heating core; a second heating core is provided on the second conductive heat insulation plate, and the second heating core is arranged opposite to the first heating core; both sides of the second heating core are provided with a second limiting assembly for fixing the second heating core; the second cooling plate is arranged below the second conductive heat insulation plate; the first conductive heat insulation plate and the second conductive heat insulation plate both comprise a conductive layer and a heat insulation layer; the heat insulation layers are respectively arranged on the first cooling plate and the second cooling plate; a heat insulation structure for blocking heat transfer is provided in the heat insulation layer; the conductive layer is arranged on the heat insulation layer.
[0009] As an optimal solution for an energy-saving and efficient diffusion welding heating fixture, the thermal insulation structure includes multiple groups of thermal insulation grooves; the multiple groups of thermal insulation grooves are respectively distributed in an array or staggered in the first conductive thermal insulation board and the second conductive thermal insulation board.
[0010] As a preferred solution for an energy-saving and efficient diffusion welding heating fixture, the structure of the first conductive thermal insulation board is the same as that of the second conductive thermal insulation board; the first conductive thermal insulation board and the second conductive thermal insulation board are both made of copper-steel composite materials.
[0011] As an optimal solution for an energy-saving and efficient diffusion welding heating jig, the structure of the first cooling plate is the same as that of the second cooling plate; both the first cooling plate and the second cooling plate are provided with multiple groups of cooling grooves; one end of the cooling groove is connected to a water inlet pipe, and the other end is connected to a water outlet pipe.
[0012] As an optimal solution for an energy-saving and efficient diffusion welding heating fixture, multiple groups of cooling grooves are distributed in parallel in the first cooling plate and the second cooling plate to form cooling channels; the water inlet pipe, the water outlet pipe and the cooling channel are connected end to end to form a circulating water circuit.
[0013] As a preferred solution for an energy-saving and efficient diffusion welding heating jig, the first limiting assembly and the second limiting assembly have the same structure; the second limiting assembly includes a second mounting bracket, a second limiting cylinder and a second limiting rocker; the second mounting bracket is arranged on one side of the second cooling plate; the second limiting cylinder is arranged on the second mounting bracket; one end of the second limiting rocker is arranged on the second heating mold core, and the other end is connected to the output end of the second limiting cylinder, and the middle part of the second limiting rocker is connected to the second mounting bracket by screws.
[0014] As a preferred solution for an energy-saving and efficient diffusion welding heating jig, the second mounting frame has a fixing portion extending outward on one side, and the second mounting frame is arranged perpendicular to the fixing portion; the second limiting cylinder is arranged at the bottom end of the fixing portion.
[0015] As an optimal solution for an energy-saving and efficient diffusion welding heating jig, a lower pressure module is connected to the top of the upper mold base; the lower pressure module includes a lower pressure drive member and a lower pressure head; the lower pressure head is arranged on the upper mold base, and the lower pressure drive member is arranged on the lower pressure head.
[0016] As an optimal solution for an energy-saving and efficient diffusion welding heating jig, a fixing frame is provided on one side of the lower die base; an infrared temperature sensor is provided on the fixing frame.
[0017] A diffusion welding machine comprises the above-mentioned energy-saving and efficient diffusion welding heating fixture.
[0018] The beneficial effects of the utility model are:
[0019] By providing a thermal insulation layer and a thermal insulation structure, the thermal insulation layer can reduce heat conduction between the conductive layer and the first cooling plate and between the conductive layer and the second cooling plate, thereby reducing the heat burden of the first cooling plate and the second cooling plate, and preventing the water inlet pipe and the water outlet pipe from bursting due to overheating. The thermal insulation structure can also reduce the energy consumption of the first heating mold core and the second heating mold core, so that the first heating mold core and the second heating mold core can efficiently reach and maintain the expected welding temperature. At the same time, the first conductive thermal insulation plate and the second conductive thermal insulation plate adopt copper-steel composite materials. Compared with traditional copper conductive plates, the first conductive thermal insulation plate and the second conductive thermal insulation plate have poor thermal conductivity, thereby reducing heat conduction between the first heating mold core and the first cooling plate, and between the second heating mold core and the second cooling plate, and reducing the heat burden of the first cooling plate and the second cooling plate. The copper-steel composite material also has good conductivity, which can ensure that the first heating mold core and the second heating mold core are quickly heated to reach the required welding temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of an energy-saving and efficient diffusion welding heating fixture provided by the utility model;
[0021] Figure 2 A schematic cross-sectional view of the lower die base provided by the present invention;
[0022] Figure 3 This is a schematic diagram of the overall structure of the second limiting assembly provided by the utility model;
[0023] Figure 4 This is a schematic diagram of the overall structure of a diffusion welding machine provided by the utility model;
[0024] Figure 5 A schematic diagram of the internal structure of the heat insulation layer provided by the utility model;
[0025] Figure 6 This is another schematic diagram of the internal structure of the thermal insulation layer provided by the utility model.
[0026] Among them, the reference numerals in the figures are:
[0027] 10. Upper mold base; 11. First cooling plate; 12. First conductive thermal insulation plate; 13. First heating mold core; 14. Thermal insulation groove; 15. Cooling groove; 16. Water inlet pipe; 17. Water outlet pipe; 20. Lower mold base; 21. Second cooling plate; 22. Second conductive thermal insulation plate; 23. Second heating mold core; 30. First limiting assembly; 31. Second limiting assembly; 32. Second mounting bracket; 321. Fixing part; 33. Second limiting cylinder; 34. Second limiting rocker; 40. Down pressure head; 41. Infrared temperature sensor; 42. Fixing bracket; 43. Down pressure drive component; 50. Conductive layer; 51. Thermal insulation layer. DETAILED DESCRIPTION
[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.
[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.
[0031] In the description of this embodiment, the terms "up", "down", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0032] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0033] In one embodiment of the present invention, Figure 1-6 As shown, an energy-saving and efficient diffusion welding heating fixture is provided, including an upper mold base 10 and a lower mold base 20; the upper mold base 10 includes a first cooling plate 11 and a first conductive heat insulation plate 12; the first conductive heat insulation plate 12 is arranged below the first cooling plate 11; a first heating mold core 13 is provided on the first conductive heat insulation plate 12; both sides of the first heating mold core 13 are provided with a first limiting assembly 30 for fixing the first heating mold core 13; the lower mold base 20 is arranged below the first heating mold core 13; the lower mold base 20 includes a second cooling plate 21 and a second conductive heat insulation plate 22; the second conductive heat insulation plate 22 is provided on the first heating mold core 13 Below; a second heating core 23 is provided on the second conductive insulation plate 22, and the second heating core 23 is arranged opposite to the first heating core 13; second limiting components 31 for fixing the second heating core 23 are provided on both sides of the second heating core 23; the second cooling plate 21 is arranged below the second conductive insulation plate 22; the first conductive insulation plate 12 and the second conductive insulation plate 22 both include a conductive layer 50 and an insulation layer 51; the insulation layer 51 is respectively provided on the first cooling plate 11 and the second cooling plate 21; an insulation structure for blocking heat transfer is provided in the insulation layer 51; the conductive layer 50 is provided on the insulation layer 51.
[0034] By providing the heat insulation layer 51 and the heat insulation structure, the heat insulation layer 51 reduces the heat conduction between the conductive layer 50 and the first cooling plate 11 and between the conductive layer 50 and the second cooling plate 21, thereby reducing the heat burden of the first cooling plate 11 and the second cooling plate 21, and preventing the water inlet pipe and the water outlet pipe from rupturing due to overheating. In addition, the heat insulation structure can also reduce the energy consumption of the first heating mold core 13 and the second heating mold core 23, so that the first heating mold core 13 and the second heating mold core 23 can efficiently reach and maintain the expected welding temperature. At the same time, the first conductive heat insulation plate 12 The first conductive heat insulation plate 12 and the second conductive heat insulation plate 22 are made of copper-steel composite material. Compared with traditional copper conductive plates, the thermal conductivity of the first conductive heat insulation plate 12 and the second conductive heat insulation plate 22 is poor, which reduces the heat conduction between the first heating mold core 13 and the first cooling plate 11, and the second heating mold core 23 and the second cooling plate 21, and reduces the heat burden of the first cooling plate 11 and the second cooling plate 21. The copper-steel composite material also has good conductivity, which can ensure that the first heating mold core 13 and the second heating mold core 23 are quickly heated to reach the required welding temperature.
[0035] Specifically, the thermal insulation structure includes multiple groups of thermal insulation slots 14; these groups of thermal insulation slots 14 are distributed in an array or staggered arrangement within the first conductive thermal insulation plate 12 and the second conductive thermal insulation plate 22. In this embodiment, the thermal insulation slots 14 have a circular cross-section. By providing multiple groups of thermal insulation slots 14, vertical heat conduction within the first conductive thermal insulation plate 12 and the second conductive thermal insulation plate 22 is effectively blocked, helping to concentrate heat from the welding area within a specific region and reducing energy consumption throughout the welding process. In other embodiments, the cross-sections of the thermal insulation slots 14 may alternatively be polygonal or irregular, as long as they effectively block heat within the first conductive thermal insulation plate 12 and the second conductive thermal insulation plate 22.
[0036] In this embodiment, if Figure 5 As shown, multiple groups of heat-insulating grooves 14 can be arranged in multiple rows and columns, provided that the load conditions of the first conductive heat-insulating plate 12 and the second conductive heat-insulating plate 22 are met. The specific number of rows and columns depends on actual production requirements. By providing multiple rows and columns of heat-insulating grooves 14, the heat blocking capability in the vertical direction is improved, the heat conduction between the first heating core 13 and the first cooling plate 11, and the heat conduction between the second heating core 23 and the second cooling plate 21 is reduced, and the energy consumption of the entire welding process is reduced.
[0037] In the remaining embodiments, Figure 6As shown, multiple groups of thermal insulation slots 14 can be arranged in multiple rows and columns, provided that the load conditions of the first and second conductive thermal insulation plates 12, 22 are met. The thermal insulation slots 14 in adjacent rows are staggered. The specific number of rows and columns depends on actual production requirements. The staggered arrangement of thermal insulation slots 14 effectively blocks vertical heat conduction within the first and second conductive thermal insulation plates 12, 22, reducing energy consumption throughout the welding process.
[0038] Preferably, the structure of the first conductive heat insulation plate 12 is the same as that of the second conductive heat insulation plate 22. The first conductive heat insulation plate 12 and the second conductive heat insulation plate 22 are both copper-steel composite materials. The conductive layer 50 in the first conductive heat insulation plate 12 and the second conductive heat insulation plate 22 is a copper plate, preferably a chromium-zirconium-copper alloy material, and the heat insulation layer 51 is a heat-resistant unmodified material, preferably 310s stainless steel. The resistivity of 310s stainless steel is 0.78μΩ·m at 20°C, which has good electrical conductivity and high temperature resistance. Compared with traditional copper conductive plates, the first conductive heat insulation plate 12 and the second conductive heat insulation plate 22 have poor thermal conductivity, reducing heat conduction between the first heating mold core 13 and the first cooling plate 11, and the second heating mold core 23 and the second cooling plate 21, reducing the heat burden of the first cooling plate 11 and the second cooling plate 21, and the heat-resistant stainless steel material also has good electrical conductivity, which can ensure that the first heating mold core 13 and the second heating mold core 23 are quickly heated to reach the required welding temperature.
[0039] Preferably, the structure of the first cooling plate 11 is identical to that of the second cooling plate 21. Both are made of red copper and are connected to the power supply box via copper busbars. The first cooling plate 11 transmits the voltage converted by the transformer to the first conductive heat shield 12, and the second cooling plate 21 transmits the voltage converted by the transformer to the second conductive heat shield 22, thereby heating the first heating core 13 and the second heating core 23. Each of the first and second cooling plates 11, 21 is provided with multiple sets of cooling grooves 15. One end of the cooling grooves 15 is connected to a water inlet pipe 16, and the other end is connected to a water outlet pipe 17. During diffusion welding, cooling water flows into the cooling grooves 15 through the water inlet pipe 16. The cooling water exchanges heat with the heat in the welding area within the cooling grooves 15, and the cooling water is discharged through the water outlet pipe 17 after heat exchange, thereby removing waste heat generated during the diffusion welding process and ensuring the efficient operation of the first and second cooling plates 11, 21.
[0040] Furthermore, multiple sets of cooling grooves 15 are arranged in parallel within the first cooling plate 11 and the second cooling plate 21 to form cooling channels. The water inlet pipe 16, the water outlet pipe 17, and the cooling channels are connected end-to-end to form a circulating water circuit. This circulating water circuit allows the flowing cooling water to remove heat from the weld area, effectively reducing the temperature in the weld area and ensuring the efficient operation of the first cooling plate 11 and the second cooling plate 21.
[0041] Preferably, the first limiting assembly 30 and the second limiting assembly 31 have the same structure, so only the second limiting assembly 31 is described in detail. The second limiting assembly 31 includes a second mounting bracket 32, a second limiting cylinder 33, and a second limiting rocker 34. The second mounting bracket 32 is arranged on one side of the second cooling plate 21. The second limiting cylinder 33 is arranged on the second mounting bracket 32. One end of the second limiting rocker 34 is arranged on the second heating mold core 23, and a recessed groove is provided between the second heating mold core and the second limiting rocker 34. The other end is connected to the output end of the second limiting cylinder 33, and the middle part of the second limiting rocker 34 is connected to the second mounting bracket 32 by screws.
[0042] When installing the second heating mold core 23, the second limiting rocker plate 34 is lifted by the second limiting cylinder 33, causing the second limiting rocker plate 34 to swing downward along the screw away from one end of the second limiting cylinder 33. One end of the second limiting rocker plate 34 abuts against the recessed groove of the second heating mold core 23. The second limiting rocker plate 34 provides downward pressure on the second heating mold core 23, so that the second heating mold core 23 is subjected to the pressure of the second limiting rocker plate 34 and is fixed to the second conductive heat insulation plate 22. When removing the second heating mold core 23, the second limiting cylinder 33 is driven downward to eliminate the downward pressure of the second limiting rocker plate 34 on the second heating mold core 23, thereby completing the removal of the second heating mold core 23.
[0043] Furthermore, the second mounting bracket 32 has an outwardly extending fixing portion 321 on one side, and the second mounting bracket 32 is arranged perpendicular to the fixing portion 321. The second limiting cylinder 33 is disposed at the bottom end of the fixing portion 321. The provision of the fixing portion 321 facilitates the installation and fixing of the second limiting cylinder 33 without interfering with the installation and fixing of other components.
[0044] Preferably, a lower pressing die assembly is connected to the top of the upper die base 10. The lower pressing die assembly includes a lower pressing drive 43 and a lower pressing head 40. The lower pressing head 40 is mounted on the upper die base 10. The lower pressing drive 43 is a drive cylinder driven by a servo motor. The lower pressing drive 43 controls the downward or upward movement of the lower pressing head 40, driving the upper die base 10 toward or away from the lower die base 20, thereby closing and opening the upper and lower die bases 10 and 20.
[0045] Preferably, a fixing bracket 42 is provided on one side of the lower mold base 20. An infrared temperature sensor 41 is mounted on the fixing bracket 42. In this embodiment, an adjustment base for manually adjusting the height is provided between the infrared temperature sensor 41 and the fixing bracket 42. The infrared temperature sensor 41 detects the temperature of the second heating mold core 23, allowing operators to understand the actual temperature of the second heating mold core 23 and determine the temperature accordingly, thereby making appropriate adjustments.
[0046] A diffusion welding machine includes the energy-saving and efficient diffusion welding heating jig described above. It also includes a frame, a power supply mechanism, and a transformer. The lower die base 20 of the energy-saving and efficient diffusion welding heating jig is located in the center of the frame. The lower pressure module of the energy-saving and efficient diffusion welding heating jig is located at the top of the frame and is connected to the upper die base 10 of the energy-saving and efficient diffusion welding heating jig. The upper die base 10 is driven downward by the lower pressure module and abuts against the lower die base 20. The power supply mechanism is located on one side of the frame. The power supply mechanism includes a frequency converter. The transformer is located in the center of the frame and behind the lower die base 20. The mains power converts three-phase AC into two-phase AC through the frequency converter, and then the two-phase AC is stepped down by the transformer so that the converted voltage is suitable for the conductive voltage of the energy-saving and efficient diffusion welding heating jig, thereby completing the diffusion welding of the copper foil.
[0047] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.
Claims
1. An energy-saving and efficient diffusion welding heating fixture, characterized in that: include: An upper mold base, the upper mold base comprising a first cooling plate and a first conductive heat insulation plate; The first conductive heat insulation plate is arranged below the first cooling plate; a first heating mold core is arranged on the first conductive heat insulation plate; first limiting components for fixing the first heating mold core are arranged on both sides of the first heating mold core; A lower mold base, the lower mold base is arranged below the first heating mold core; the lower mold base includes a second cooling plate and a second conductive heat insulation plate; the second conductive heat insulation plate is arranged below the first heating mold core; a second heating mold core is provided on the second conductive heat insulation plate, and the second heating mold core is arranged opposite to the first heating mold core; second limiting assemblies for fixing the second heating mold core are provided on both sides of the second heating mold core; the second cooling plate is arranged below the second conductive heat insulation plate; Among them, the first conductive thermal insulation plate and the second conductive thermal insulation plate both include a conductive layer and a thermal insulation layer; the thermal insulation layers are respectively arranged on the first cooling plate and the second cooling plate; the thermal insulation layer is provided with a thermal insulation structure for blocking heat transfer; the conductive layer is arranged on the thermal insulation layer.
2. The energy-saving and efficient diffusion welding heating fixture according to claim 1 is characterized in that: The heat insulation structure includes multiple groups of heat insulation grooves; the multiple groups of heat insulation grooves are respectively distributed in an array or staggered in the first conductive heat insulation board and the second conductive heat insulation board.
3. The energy-saving and efficient diffusion welding heating fixture according to claim 1 is characterized in that: The structure of the first conductive thermal insulation board is the same as that of the second conductive thermal insulation board; the first conductive thermal insulation board and the second conductive thermal insulation board are both made of copper-steel composite materials.
4. The energy-saving and efficient diffusion welding heating fixture according to claim 1 is characterized in that: The structure of the first cooling plate is the same as that of the second cooling plate; a plurality of cooling slots are provided in both the first cooling plate and the second cooling plate; one end of the cooling slot is connected to a water inlet pipe, and the other end is connected to a water outlet pipe.
5. The energy-saving and efficient diffusion welding heating fixture according to claim 4 is characterized in that: A plurality of groups of cooling grooves are distributed in parallel in the first cooling plate and the second cooling plate to form cooling channels; the water inlet pipe, the water outlet pipe and the cooling channels are connected end to end to form a circulating water circuit.
6. The energy-saving and efficient diffusion welding heating fixture according to claim 1 is characterized in that: The first limiting assembly and the second limiting assembly have the same structure; the second limiting assembly includes a second mounting bracket, a second limiting cylinder and a second limiting rocker; the second mounting bracket is arranged on one side of the second cooling plate; the second limiting cylinder is arranged on the second mounting bracket; one end of the second limiting rocker is arranged on the second heating mold core, and the other end is connected to the output end of the second limiting cylinder, and the middle part of the second limiting rocker is connected to the second mounting bracket by screws.
7. The energy-saving and efficient diffusion welding heating fixture according to claim 6 is characterized in that: One side of the second mounting bracket has a fixing portion extending outward, and the second mounting bracket is arranged perpendicular to the fixing portion; the second limiting cylinder is arranged at the bottom end of the fixing portion.
8. The energy-saving and efficient diffusion welding heating fixture according to claim 1 is characterized in that: The top of the upper die base is connected to a lower die set; the lower die set includes a lower die driving member and a lower die head; the lower die head is arranged on the upper die base, and the lower die driving member is arranged on the lower die head.
9. The energy-saving and efficient diffusion welding heating fixture according to claim 1, characterized in that: A fixing frame is provided on one side of the lower die base; an infrared temperature sensor is provided on the fixing frame.
10. A diffusion welding machine, characterized in that: The invention comprises an energy-saving and efficient diffusion welding heating jig as claimed in any one of claims 1 to 9.