A diaphragm spring processing heat treatment device

Abstract

The application discloses a diaphragm spring processing heat treatment equipment, including tempering furnace, workpiece translation assembly and wind direction following assembly, the wall body of the tempering furnace is provided with a feeding port, an auxiliary material adding cylinder and a control panel, the upper end of the tempering furnace is fixedly provided with a hot air blower, and the air outlet end of the hot air blower is communicated with the wind direction following assembly through a gas guide pipe; the workpiece translation assembly is composed of a material tray, sliding rails and a clamping piece, and is used for translating the workpiece in the tempering furnace. The intelligent control mechanism composed of an infrared sensor, a driving motor and a threaded rod can monitor the temperature distribution in the tempering furnace in real time, accurately translate the material tray to a temperature qualified area, cooperate with the sliding guide structure of the sliding rails and the clamping piece, ensure the stable movement of the workpiece, and make the hot air accurately act on the workpiece all the time, so that the temperature gradient in the furnace and the local uneven heating problem of the workpiece are effectively eliminated, and the mechanical property consistency of batch diaphragm springs is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of diaphragm spring processing technology, and in particular to a heat treatment device for diaphragm spring processing. Background Technology

[0002] As a core elastic element in mechanical devices such as clutches and braking systems, the mechanical properties, dimensional stability, and service life of diaphragm springs directly determine the operational reliability of the entire machine. Tempering in the heat treatment process is a crucial step in optimizing the metallographic structure of diaphragm springs, eliminating processing stress, and improving their elastic limit and fatigue strength. Therefore, stringent requirements are placed on the temperature uniformity, temperature control accuracy, and hot air efficiency of the heat treatment equipment.

[0003] Existing diaphragm spring heat treatment equipment has several shortcomings in practical applications: First, workpieces are often fixed or simply moved within the tempering furnace, leading to temperature gradients in different areas due to uneven hot air circulation. This results in poor consistency in the heat treatment quality of batches of workpieces, with some workpieces exhibiting insufficient elasticity and excessive deformation. Second, the hot air outlet direction is fixed and cannot be dynamically adjusted to follow the workpiece position, causing uneven heating of the workpiece surface and making it prone to overheating or underheating in localized areas, affecting the performance stability of the diaphragm spring. Third, the auxiliary ventilation structure is poorly designed, resulting in low hot air circulation efficiency within the furnace. This not only prolongs the heat treatment cycle but also easily leads to the accumulation of volatile impurities, affecting the surface quality of the workpiece. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a heat treatment device for diaphragm spring processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A heat treatment device for processing diaphragm springs includes a tempering furnace, a workpiece translation component, and an air direction following component. The tempering furnace wall is equipped with a feed inlet, an auxiliary material adding cylinder, and a control panel. A hot air blower is fixedly installed at the upper end of the tempering furnace, and the air outlet of the hot air blower is connected to the air direction following component through an air guide pipe.

[0007] The workpiece translation assembly consists of a material tray, slide rails, and clamps, and is used to translate the workpiece in the tempering furnace. A pair of slide rails are stacked and fixedly connected to the bottom of the tempering furnace, and a pair of clamps are symmetrically fixedly connected to the lower end of the material tray and slidably connected to the slide rails. The upper end of each material tray is provided with a material placement groove. An intelligent control mechanism for intelligently controlling the translation of the material tray to the temperature target position is installed in the tempering furnace.

[0008] The airflow following component consists of a pair of air outlet ducts, a first arc-shaped telescopic baffle, and a second arc-shaped telescopic baffle. It is used to change the direction of the air blown out by the hot air blower as the material tray moves. The pair of air outlet ducts are symmetrically arranged in the tempering furnace and connected by an air collection pipe. Air outlets are opened on both sides of the air outlet ducts. The air collection pipe is connected to the air guide pipe. The first arc-shaped telescopic baffle and the second arc-shaped telescopic baffle are respectively rotatably connected to the air outlets on both sides of the same air outlet duct. A drive mechanism for driving the first arc-shaped telescopic baffle and the second arc-shaped telescopic baffle is installed in the middle of the pair of air outlet ducts.

[0009] Preferably, the intelligent control mechanism includes an infrared sensor, a drive motor, a threaded rod, and a threaded sleeve. The infrared sensor is fixedly installed on the top of the tempering furnace, the drive motor is fixedly installed on the side wall of the tempering furnace and is electrically connected to the infrared sensor, the threaded rod is rotatably connected to the inner wall of the tempering furnace and is coaxially fixedly connected to the output shaft of the drive motor, and the threaded sleeve is threadedly connected to the threaded rod and fixedly connected to the material tray.

[0010] Preferably, the driving mechanism includes a first crossbar, a second crossbar, a resistance shaft, and a rotating rod. The resistance shaft is rotatably connected between a pair of air outlets and extends into the air outlets. The rotating rod is fixedly connected to the resistance shaft at its middle position. The first and second crossbars are respectively fixedly connected to both ends of the resistance shaft. The first crossbar is fixedly connected to the end of a first arc-shaped telescopic wind deflector, and the second crossbar is fixedly connected to the end of a second arc-shaped telescopic wind deflector. A transmission mechanism for driving its rotation is installed on the resistance shaft.

[0011] Preferably, the transmission mechanism includes a gear and a rack, the rack being fixedly connected to the upper end of the threaded sleeve, and the gear being coaxially fixedly connected to the resistance shaft, with the two meshing when the rack is below the gear.

[0012] Preferably, the arcuate curvature of the first and second arcuate telescopic wind deflectors is adapted to the curvature of the outer wall of the air outlet, and the telescopic stroke of both is limited.

[0013] Preferably, the inner wall of the material placement tank is provided with a high-temperature resistant buffer layer, and the surface of the high-temperature resistant buffer layer that contacts the diaphragm spring workpiece has a smooth structure.

[0014] Preferably, an auxiliary exhaust assembly is installed on the inner wall of the tempering furnace. The auxiliary exhaust assembly consists of a pair of exhaust ducts, an air inlet pipe, and an elastic airbag fixedly installed on the inner wall of the tempering furnace. The elastic airbag is located on the side of the tempering furnace. The air inlet pipe is connected between the elastic airbag and the exhaust duct. An exhaust port is opened at the lower end of the exhaust duct. The elastic airbag is also connected to a hot air source. An intermittent compression mechanism for intermittently compressing the elastic airbag is installed on the side wall of the tempering furnace.

[0015] Preferably, the intermittent extrusion mechanism includes a cam and a pair of drive wheels. The cam is rotatably connected to the side wall of the tempering furnace. The pair of drive wheels are connected by a drive belt and are coaxially fixedly connected to the output shaft of the drive motor and the cam, respectively. The cam extrudes the elastic airbag when its long end faces it, and does not contact the elastic airbag when its short end faces it.

[0016] Preferably, the air inlet pipe is equipped with a one-way valve that allows airflow only from the elastic airbag to the exhaust duct, and the connection between the elastic airbag and the hot air source is equipped with a one-way valve that allows airflow only from the hot air source to the elastic airbag.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention uses an intelligent control mechanism composed of an infrared sensor, a drive motor, and a threaded rod to monitor the temperature distribution inside the tempering furnace in real time, drive the material tray to move precisely to the temperature target area, and, in conjunction with the sliding guide structure of the slide rail and the clamp, ensure that the workpiece moves smoothly.

[0019] 2. The wind direction following component of this invention uses gear and rack transmission to make the arc-shaped telescopic baffle adjust the air outlet orientation synchronously with the movement of the material tray, so that the hot air always acts accurately on the workpiece, effectively eliminating the problem of temperature gradient in the furnace and uneven local heating of the workpiece, and greatly improving the consistency of mechanical properties of batch diaphragm springs.

[0020] 3. The auxiliary exhaust component of the present invention is linked with the intermittent extrusion mechanism. With the help of the drive motor, the cam intermittently extrudes the elastic air bag. Combined with the guiding effect of the one-way valve, the hot air source continuously replenishes the furnace with hot air and forms a directional circulating airflow through the exhaust duct. This not only accelerates the hot air circulation speed in the furnace and reduces the accumulation of volatile impurities, but also further improves the temperature uniformity in the furnace. While shortening the heat treatment process cycle, it avoids the contamination of the workpiece surface caused by impurities and ensures the surface smoothness of the diaphragm spring. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a heat treatment equipment for diaphragm spring processing proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of a diaphragm spring processing heat treatment equipment in its initial state, as proposed in this invention.

[0023] Figure 3 This is a schematic diagram of the structure of a diaphragm spring processing heat treatment equipment after the workpiece has been translated, as proposed in this invention.

[0024] Figure 4 This is an internal side view of a heat treatment device for diaphragm spring processing proposed in this invention;

[0025] Figure 5 This is a schematic diagram of the intelligent control mechanism proposed in this invention;

[0026] Figure 6 This is a schematic diagram of the wind direction following component proposed in this invention;

[0027] Figure 7 This is a schematic diagram of the intermittent extrusion mechanism proposed in this invention;

[0028] Figure 8 This is a schematic diagram of the auxiliary ventilation component proposed in this invention.

[0029] In the diagram: 1. Tempering furnace; 2. Feed inlet; 3. Auxiliary material adding cylinder; 4. Control panel; 5. Hot air blower; 6. Air guide pipe; 7. Drive motor; 8. Threaded rod; 9. Material tray; 10. Air outlet; 11. First arc-shaped telescopic wind baffle; 12. Material placement trough; 13. Second arc-shaped telescopic wind baffle; 14. Air collection pipe; 15. Infrared sensor; 16. Threaded sleeve; 17. Rack; 18. Slide rail; 19. Clamp; 20. Rotating rod; 21. Resistance rotating shaft; 22. First crossbar; 23. Second crossbar; 24. Elastic airbag; 25. Cam; 26. Transmission wheel; 27. Air inlet pipe; 28. Exhaust duct; 29. ​​Exhaust port; 30. Gear. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Example 1

[0032] Reference Figure 1-5 A heat treatment equipment for processing diaphragm springs includes a tempering furnace 1 and a workpiece translation assembly. The tempering furnace 1 is equipped with a feed inlet 2, an auxiliary material adding cylinder 3 and a control panel 4. A hot air blower 5 is fixedly installed on the upper end of the tempering furnace 1. The air outlet of the hot air blower 5 is connected to the air direction following assembly through an air guide pipe 6.

[0033] The workpiece translation assembly consists of a material tray 9, slide rails 18, and clamps 19. It is used to translate workpieces within the tempering furnace 1. A pair of slide rails 18 are stacked and fixedly connected to the bottom of the tempering furnace 1. A pair of clamps 19 are symmetrically fixedly connected to the lower end of the material tray 9 and slidably connected to the slide rails 18. Each material tray 9 has a material placement slot 12 at its upper end. An intelligent control mechanism is installed inside the tempering furnace 1 to intelligently control the translation of the material tray 9 towards the temperature target. The inner wall of the material placement slot 12 is provided with a high-temperature resistant buffer layer, and the surface of the high-temperature resistant buffer layer that contacts the diaphragm spring workpiece has a smooth structure.

[0034] The intelligent control mechanism includes an infrared sensor 15, a drive motor 7, a threaded rod 8, and a threaded sleeve 16. The infrared sensor 15 is fixedly installed on the top of the tempering furnace 1. The drive motor 7 is fixedly installed on the side wall of the tempering furnace 1 and is electrically connected to the infrared sensor 15. The threaded rod 8 is rotatably connected to the inner wall of the tempering furnace 1 and is coaxially fixedly connected to the output shaft of the drive motor 7. The threaded sleeve 16 is threadedly connected to the threaded rod 8 and is fixedly connected to the material tray 9.

[0035] In this embodiment, after the equipment is started, the temperature parameters and process time of the tempering treatment are set through the control panel 4. The tempering furnace 1 generates high temperature to temper the workpiece. At the same time, the hot air blower 5 is started to generate hot air. The hot air is delivered to the air collection pipe 14 through the air guide pipe 6, and then split into a pair of air outlet ducts 10. Finally, it is discharged from the air outlets on both sides of the air outlet duct 10, creating an initial heat treatment environment in the tempering furnace 1. At the same time, the required heat treatment auxiliary materials can be added into the furnace through the auxiliary material adding cylinder 3 to help optimize the metallographic structure of the diaphragm spring.

[0036] The diaphragm spring workpiece is placed in the material placement slot 12 of the material tray 9. The infrared sensor 15 monitors the temperature distribution in different areas of the tempering furnace 1 in real time. When the temperature of a certain area reaches the preset standard, an electrical signal is sent to the drive motor 7. After the drive motor 7 starts, it drives the threaded rod 8 to rotate. Since the threaded sleeve 16 is threadedly connected to the threaded rod 8 and the rotation is restricted by the anti-rotation limiting structure, the threaded sleeve 16 moves smoothly along the axial direction of the threaded rod 8, thereby driving the material tray 9, which is fixedly connected to it, to move along the slide rail 18 through the clamp 19 to the temperature standard area, realizing the intelligent and precise positioning of the workpiece.

[0037] Example 2

[0038] Reference Figure 6 A heat treatment device for processing diaphragm springs, differing from Embodiment 1 in that it further includes an airflow following component. The airflow following component consists of a pair of air outlet ducts 10, a first arc-shaped telescopic baffle plate 11, and a second arc-shaped telescopic baffle plate 13, used to change the direction of the air blown by the hot air blower 5 as the material tray 9 moves. The pair of air outlet ducts 10 are symmetrically arranged in the tempering furnace 1 and connected by an air collecting pipe 14. Air outlets are opened on both sides of the air outlet ducts 10. The air collecting pipe 14 is connected to the air guide pipe 6. The first arc-shaped telescopic baffle plate 11 and the second arc-shaped telescopic baffle plate 13 are rotatably connected to the air outlets on both sides of the same air outlet duct 10. A drive mechanism for driving the first arc-shaped telescopic baffle plate 11 and the second arc-shaped telescopic baffle plate 13 is installed in the middle of the pair of air outlet ducts 10.

[0039] The drive mechanism includes a first crossbar 22, a second crossbar 23, a resistance shaft 21, and a rotating rod 20. The resistance shaft 21 is rotatably connected between a pair of air outlets 10 and extends into the air outlets 10. The rotating rod 20 is fixedly connected to the resistance shaft 21 at its middle position. The first crossbar 22 and the second crossbar 23 are respectively fixedly connected to the two ends of the resistance shaft 21. The first crossbar 22 is fixedly connected to the end of the first arc-shaped telescopic wind deflector 11, and the second crossbar 23 is fixedly connected to the end of the second arc-shaped telescopic wind deflector 13. A transmission mechanism for driving its rotation is installed on the resistance shaft 21.

[0040] The transmission mechanism includes a gear 30 and a rack 17. The rack 17 is fixedly connected to the upper end of the threaded sleeve 16. The gear 30 is coaxially fixedly connected to the resistance shaft 21. When the rack 17 is below the gear 30, the two mesh with each other.

[0041] In this embodiment, during the movement, the threaded sleeve 16, which is fixedly connected to it, synchronously drives the upper rack 17 to move linearly. When the rack 17 moves below the gear 30, the two mesh with each other, and the linear motion of the rack 17 is converted into the rotational motion of the gear 30, which in turn drives the resistance shaft 21, which is coaxially fixed with the gear 30, to rotate between the pair of air outlets 10. When the resistance shaft 21 rotates, the first crossbar 22 and the second crossbar 23 at both ends of it move in sync, respectively driving the first arc-shaped telescopic wind baffle 11 and the second arc-shaped telescopic wind baffle 13 to rotate around the air outlet of the air outlet 10. By adjusting the opening and closing angle and extension length of the wind baffle, the direction of the hot air discharged from the air outlet 10 is always adapted to the real-time position of the material tray 9.

[0042] Simultaneously, the rotating rod 20 rotates synchronously with the resistance shaft 21, providing auxiliary limiting and guiding functions for the rotation trajectory of the first arc-shaped telescopic wind deflector 11 and the second arc-shaped telescopic wind deflector 13, ensuring smooth and precise wind deflector movement and avoiding jamming or deviation. This embodiment achieves dynamic tracking of the hot air direction with the workpiece position, effectively solving the problem of uneven workpiece heating caused by the fixed hot air direction in traditional equipment. It ensures that all parts of the diaphragm spring receive uniform and stable hot air action, further improving the consistency of mechanical properties and dimensional stability of the workpiece after heat treatment.

[0043] Example 3

[0044] Reference Figure 7-8A heat treatment device for processing diaphragm springs, which differs from embodiments 1 and 2 in that an auxiliary exhaust assembly is installed on the inner wall of the tempering furnace 1. The auxiliary exhaust assembly consists of a pair of exhaust ducts 28, an air inlet pipe 27 and an elastic airbag 24 fixedly installed on the inner wall of the tempering furnace 1. The elastic airbag 24 is located on the side of the tempering furnace 1. The air inlet pipe 27 is connected between the elastic airbag 24 and the exhaust duct 28. An exhaust port 29 is opened at the lower end of the exhaust duct 28. The elastic airbag 24 is also connected to a hot air source. An intermittent extrusion mechanism for intermittently extruding the elastic airbag 24 is installed on the side wall of the tempering furnace 1.

[0045] The intermittent extrusion mechanism includes a cam 25 and a pair of drive wheels 26. The cam 25 is rotatably connected to the side wall of the tempering furnace 1. The pair of drive wheels 26 are connected by a drive belt and are coaxially fixedly connected to the output shaft of the drive motor 7 and the cam 25 respectively. When the long end of the cam 25 faces the elastic air bag 24, it extrudes it, and when the short end faces the elastic air bag 24, it does not contact it.

[0046] A one-way valve is installed inside the air inlet duct 27, which only allows airflow from the elastic airbag 24 to the exhaust duct 28. A one-way valve is also installed at the connection between the elastic airbag 24 and the hot air source, which only allows airflow from the hot air source to the elastic airbag 24.

[0047] In this embodiment, after the device is started, the hot air generated by the hot air blower 5 is delivered to the air outlet duct 10 through the air guide pipe 6 and the air collection pipe 14. At the same time, the elastic airbag 24 continuously draws in hot air through the one-way valve connected to the hot air source to complete the initial energy storage.

[0048] When the drive motor 7 starts under the signal control of the infrared sensor 15 to drive the material tray 9 to move horizontally, its output shaft synchronously drives a pair of transmission wheels 26 to rotate through the transmission belt, thereby driving the cam 25 to rotate around the side wall of the furnace 1.

[0049] When the long end of the cam 25 rotates to face the elastic air bladder 24, it exerts a squeezing force on the elastic air bladder 24, causing its internal air pressure to rise. At this time, the one-way valve in the air inlet pipe 27 opens, and the hot air in the elastic air bladder 24 is quickly transported to the exhaust duct 28 through the air inlet pipe 27 and discharged directionally from the exhaust port 29 at the lower end of the exhaust duct 28, forming an auxiliary circulating airflow, accelerating the circulation of hot air in the tempering furnace 1, reducing regional temperature differences, and carrying away volatile impurities in the furnace. When the short end of the cam 25 turns to the elastic air bladder 24, the squeezing force disappears, and the elastic air bladder 24 resets under its own elastic restoring force, forming a negative pressure inside. The one-way valve at the hot air source opens again, replenishing the elastic air bladder 24 with new hot air, preparing for the next squeezing and exhaust.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heat treatment device for processing diaphragm springs, comprising a tempering furnace (1), a workpiece translation assembly, and an airflow following assembly, characterized in that: The tempering furnace (1) is equipped with a feed inlet (2), an auxiliary material adding cylinder (3) and a control panel (4) on its wall. A hot air blower (5) is fixedly installed at the upper end of the tempering furnace (1). The air outlet of the hot air blower (5) is connected to the air direction following component through a guide pipe (6). The workpiece translation component consists of a material tray (9), a slide rail (18), and a clamp (19), and is used to translate the workpiece in the tempering furnace (1). A pair of slide rails (18) are stacked and fixedly connected to the bottom of the tempering furnace (1), and a pair of clamps (19) are symmetrically fixedly connected to the lower end of the material tray (9) and slidably connected to the slide rails (18). The upper end of the material tray (9) is provided with a material placement groove (12). The tempering furnace (1) is equipped with an intelligent control mechanism for intelligently controlling the translation of the material tray (9) to the temperature target position. The wind direction following component consists of a pair of air outlet ducts (10), a first arc-shaped telescopic wind baffle (11), and a second arc-shaped telescopic wind baffle (13), used to change the direction of the air blown by the hot air blower (5) as the material tray (9) moves. The pair of air outlet ducts (10) are symmetrically arranged in the tempering furnace (1) and connected by an air collection pipe (14). Air outlets are opened on both sides of the air outlet ducts (10). The air collection pipe (14) is connected to the air guide pipe (6). The first arc-shaped telescopic wind baffle (11) and the second arc-shaped telescopic wind baffle (13) are rotatably connected to the air outlets on both sides of the same air outlet duct (10). A drive mechanism for driving the first arc-shaped telescopic wind baffle (11) and the second arc-shaped telescopic wind baffle (13) is installed in the middle of the pair of air outlet ducts (10).

2. The heat treatment equipment for diaphragm spring processing according to claim 1, characterized in that: The intelligent control mechanism includes an infrared sensor (15), a drive motor (7), a threaded rod (8), and a threaded sleeve (16). The infrared sensor (15) is fixedly installed on the top of the tempering furnace (1). The drive motor (7) is fixedly installed on the side wall of the tempering furnace (1) and is electrically connected to the infrared sensor (15). The threaded rod (8) is rotatably connected between the inner walls of the tempering furnace (1) and is coaxially fixedly connected to the output shaft of the drive motor (7). The threaded sleeve (16) is threadedly connected to the threaded rod (8) and is fixedly connected to the material tray (9).

3. The heat treatment equipment for diaphragm spring processing according to claim 1, characterized in that: The drive mechanism includes a first crossbar (22), a second crossbar (23), a resistance shaft (21), and a rotating rod (20). The resistance shaft (21) is rotatably connected between a pair of air outlets (10) and extends into the air outlets (10). The rotating rod (20) is fixedly connected to the resistance shaft (21) at the middle. The first crossbar (22) and the second crossbar (23) are respectively fixedly connected to the two ends of the resistance shaft (21). The first crossbar (22) is fixedly connected to the end of the first arc-shaped telescopic wind deflector (11), and the second crossbar (23) is fixedly connected to the end of the second arc-shaped telescopic wind deflector (13). A transmission mechanism for driving its rotation is installed on the resistance shaft (21).

4. The heat treatment equipment for diaphragm spring processing according to claim 3, characterized in that: The transmission mechanism includes a gear (30) and a rack (17). The rack (17) is fixedly connected to the upper end of the threaded sleeve (16). The gear (30) is coaxially fixedly connected to the resistance shaft (21). When the rack (17) is below the gear (30), the two mesh with each other.

5. The heat treatment equipment for diaphragm spring processing according to claim 1, characterized in that: The arc of the first arc-shaped telescopic wind deflector (11) and the second arc-shaped telescopic wind deflector (13) are adapted to the arc of the outer wall of the air outlet (10), and the telescopic stroke of the two is limited.

6. The heat treatment equipment for diaphragm spring processing according to claim 1, characterized in that: The inner wall of the material placement tank (12) is provided with a high-temperature resistant buffer layer, and the surface of the high-temperature resistant buffer layer that contacts the diaphragm spring workpiece is a smooth structure.

7. The heat treatment equipment for diaphragm spring processing according to claim 1, characterized in that: An auxiliary exhaust assembly is installed on the inner wall of the tempering furnace (1). The auxiliary exhaust assembly consists of a pair of exhaust ducts (28), an air inlet pipe (27), and an elastic airbag (24) fixedly installed on the inner wall of the tempering furnace (1). The elastic airbag (24) is located on the side of the tempering furnace (1). The air inlet pipe (27) is connected between the elastic airbag (24) and the exhaust duct (28). An exhaust port (29) is opened at the lower end of the exhaust duct (28). The elastic airbag (24) is also connected to a hot air source. An intermittent compression mechanism for intermittently compressing the elastic airbag (24) is installed on the side wall of the tempering furnace (1).

8. The heat treatment equipment for diaphragm spring processing according to claim 7, characterized in that: The intermittent extrusion mechanism includes a cam (25) and a pair of drive wheels (26). The cam (25) is rotatably connected to the side wall of the tempering furnace (1). The pair of drive wheels (26) are connected by a drive belt and are coaxially fixedly connected to the output shaft of the drive motor (7) and the cam (25). The cam (25) extrudes the elastic airbag (24) when its long end faces it, and does not contact the elastic airbag (24) when its short end faces it.

9. The heat treatment equipment for diaphragm spring processing according to claim 7, characterized in that: The air inlet pipe (27) is equipped with a one-way valve that allows airflow only from the elastic airbag (24) to the exhaust pipe (28), and the connection between the elastic airbag (24) and the hot air source is equipped with a one-way valve that allows airflow only from the hot air source to the elastic airbag (24).

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