Stress relief annealing device for batch diaphragm springs

Abstract

The invention discloses a batch diaphragm spring stress relief annealing device, and belongs to the technical field of metal heat treatment, the batch diaphragm spring stress relief annealing device comprises an annealing furnace, the top of the annealing furnace is fixedly provided with a sealing top cover, the center position of the inner wall of the sealing top cover is rotatably connected with a driving gear, and a connecting rotating plate is arranged above the driving gear. According to the device, the driving gear, the driven gears, the toothed plate and the supporting rotating rod are arranged, when the driving gear drives the two driven gears to rotate around the driving gear, in the process that the driven gears rotate around the driving gear, the driven gears also rotate under the action of the toothed plate, and the supporting rotating rod rotates along with the driven gears; the diaphragm spring not only rotates around the center of the annealing furnace, but also rotates around the supporting rotating rod, so that the multi-dimensional rotating mode ensures that all parts of the diaphragm spring can be in full contact with heat, the consistency of material performance of the diaphragm spring is improved, and the reliability and the stability of the diaphragm spring in subsequent use are ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metal heat treatment, and particularly relates to a batch diaphragm spring stress relief annealing device. BACKGROUND

[0002] In modern industrial production, as an important elastic element, a diaphragm spring is widely used in various mechanical devices such as automobile clutches and mechanical presses, and the performance stability of the diaphragm spring plays a crucial role in the normal operation and reliability of the entire mechanical system. In the manufacturing process of the diaphragm spring, due to the influence of processing techniques (such as stamping, forming, etc.), stress will be generated inside the spring. If the stress is not eliminated in time, it will affect the precision, fatigue life and mechanical properties of the diaphragm spring, and thus may cause premature failure in the use process. Therefore, stress relief annealing is a key process in the manufacturing process of the diaphragm spring. The traditional diaphragm spring stress relief annealing device often has some limitations. In the heating process, uneven heating of the diaphragm spring is a common problem. In the traditional way, the diaphragm spring may be in a static state to accept heating, and the heat can only be gradually conducted from the local part, which is difficult to quickly and comprehensively cover the entire spring. This makes the heating of different parts different, the diaphragm spring near the heat source heats up, and the diaphragm spring far from the heat source heats up slowly. Alternatively, in the traditional way of processing multiple diaphragm springs, a large number of diaphragm springs are often stacked together for annealing. This stacking method causes the springs to block each other, and the heat is difficult to uniformly transmit to each part of each spring, thereby making the stress elimination degree of different parts inconsistent, and finally causing unstable overall performance of the spring. SUMMARY

[0003] In order to overcome the above defects, the application provides a batch diaphragm spring stress relief annealing device, which solves the problem that in the traditional way, the diaphragm spring may be in a static state to accept heating, the heat can only be gradually conducted from the local part, which is difficult to quickly and comprehensively cover the entire spring, which makes the heating of different parts different, the diaphragm spring near the heat source heats up, and the diaphragm spring far from the heat source heats up slowly. Alternatively, in the traditional way of processing multiple diaphragm springs, a large number of diaphragm springs are often stacked together for annealing. This stacking method causes the springs to block each other, and the heat is difficult to uniformly transmit to each part of each spring, thereby making the stress elimination degree of different parts inconsistent, and finally causing unstable overall performance of the spring.

[0004] In order to achieve the above object, the present application provides the following technical scheme: A batch diaphragm spring stress relief annealing device, comprising an annealing furnace, a sealing top cover is fixedly installed on the top of the annealing furnace, a driving gear is rotatably connected to the center position of the inner wall of the sealing top cover, a connecting rotating plate is arranged above the driving gear, the driving gear is rotatably connected to the center position of the connecting rotating plate, two driven gears are rotatably connected to the two ends of the connecting rotating plate, the two driven gears are engaged with the driving gear, an installation support is fixedly installed on the inner wall of the sealing top cover, a toothed plate is fixedly installed on the sealing top cover through the installation support, the teeth of the toothed plate are directed inward, the two driven gears are engaged with the toothed plate, a fixed support is fixedly installed above the sealing top cover, an output motor is fixedly installed on the sealing top cover through the fixed support, the output end of the output motor is connected with the driving gear, two support rotating rods are fixedly connected to the bottom center positions of the two driven gears, the two support rotating rods extend into the annealing furnace, a support rotating plate is rotatably connected to the bottom of the annealing furnace, the two ends of the support rotating plate are rotatably connected with the bottom ends of the two support rotating rods, a plurality of support rods are fixedly connected to the outer wall of the support rotating rod, and a fixing mechanism is arranged at the end of the support rod.

[0005] As a further scheme of the present application: the fixing mechanism comprises a heat insulation shell, a center support is fixedly connected to the center position between the inner walls of the heat insulation shell, three support protrusions are fixedly connected to the inner walls of the heat insulation shell at three equal division points thereof, and a limiting rod is fixedly connected between the support protrusions and the center support.

[0006] As a further scheme of the present application: a connecting support is fixedly connected below the limiting rod between the support protrusions and the center support, an adjusting sliding block is slidingly connected to the outer wall of the connecting support, the limiting rod penetrates through the adjusting sliding block, and a compression spring is sleeved between the outer wall of the connecting support and the center support between the adjusting sliding block and the center support.

[0007] As a further scheme of the present application: the top plate of the adjusting sliding block is fixedly connected with an inner support clamping plate, the top end of the inner support clamping plate is designed in an inclined manner, three limiting sliding grooves are formed in the top of the heat insulation shell, and the inner support clamping plate penetrates through the limiting sliding grooves and slides in the limiting sliding grooves.

[0008] As a further scheme of the present application: two empty grooves are symmetrically formed on the two sides of the annealing furnace, two heat insulation plates are fixedly installed in the two empty grooves respectively, the directions of the two heat insulation plates are opposite, and a circuit board is fixedly installed at the center position of the heat insulation plate.

[0009] As a further scheme of the present application: a plurality of heating pipes are arranged between the inner walls of the heat insulation plate, and the circuit board is connected with the plurality of heating pipes.

[0010] As a further scheme of the present application: the outer wall of the heat insulation plate is fixedly provided with a control power supply, and the control power supply is connected with the circuit board.

[0011] As a further scheme of the present application: one side of the annealing furnace is symmetrically connected with two sealing door plates through rotation, and two handles are symmetrically fixedly installed on one side of the two sealing door plates.

[0012] Compared with the prior art, the present application has the following beneficial effects: 1、In the present application, by setting the driving gear, driven gear, toothed plate and support rotating rod, when using the device, the output motor provides power for the driving gear to start rotating, the driving gear is engaged with the two driven gears, when the driving gear rotates, it drives the two driven gears to rotate around the driving gear, at the same time, since the toothed plate is engaged with the two driven gears, the driven gear will also rotate under the action of the toothed plate during the rotation around the driving gear, the support rotating rod at the bottom of the driven gear rotates, the support rotating rod drives the diaphragm spring to move through the support rod and the fixing mechanism fixedly connected to the outer wall, this structure design enables the diaphragm spring to perform complex movement in the annealing furnace, when the heating pipe is heated, the diaphragm spring not only rotates around the center of the annealing furnace, but also rotates around the support rotating rod, this multi-dimensional rotating mode ensures that each part of the diaphragm spring can fully contact the heat, achieving the effect of uniform heating, improving the consistency of the material performance, and ensuring the reliability and stability of the diaphragm spring in subsequent use; 2、In the present application, by setting the fixing mechanism, inner support clamping plate, connecting column and compression spring, when fixing the diaphragm spring, the diaphragm spring is sleeved on the outer wall of the three inner support clamping plates of the fixing mechanism, the inner wall of the diaphragm spring is pressed against the inner support clamping plate along the inclined surface of the end portion of the inner support clamping plate, so that the inner support clamping plate slides inwards and shrinks in the limiting sliding groove at the top of the heat insulation shell, the inner support clamping plate drives the bottom adjusting sliding block to slide on the outer wall of the connecting column during the shrinking process, the adjusting sliding block will press the compression spring when sliding, after the compression spring is pressed and shrinks, the elastic force of the compression spring drives the adjusting sliding block to expand outwards, and then the three inner support clamping plates expand outwards, so as to fix and clamp the diaphragm spring from the inner wall of the diaphragm spring, in this way, the convenience of fixing the diaphragm spring is improved, and the stability of the diaphragm spring during annealing in the annealing furnace is ensured, avoiding the situation that the diaphragm spring falls and displaces; 3. In this invention, by setting a fixing mechanism and fixing the diaphragm spring to the fixing mechanism, the supporting rotating rod drives the diaphragm spring to rotate and be heated evenly in the annealing furnace through the fixing mechanism. The fixing mechanism provides an independent fixing position for each diaphragm spring. When performing batch annealing of diaphragm springs, it avoids the situation where a large number of diaphragm springs are piled up together. Each diaphragm spring has its own position in the annealing furnace for annealing treatment, ensuring that each diaphragm spring can receive sufficient heat transfer and ensuring the consistency of the annealing effect. This helps to improve the quality stability of diaphragm springs in batch production, so that each diaphragm spring can achieve the expected stress-relieving annealing effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the annealing furnace of the present invention; Figure 3 This is a schematic diagram of the structure connecting the supporting rotating rod, the supporting rod, and the fixing mechanism of the present invention; Figure 4 This is a schematic diagram of the meshing structure of the driving gear, driven gear, and gear plate of the present invention; Figure 5 This is a schematic diagram of the fixing mechanism of the present invention; Figure 6 This is a schematic diagram of the connection between the heat insulation plate and the heating pipe of the present invention; In the diagram: 1. Annealing furnace; 2. Sealed top cover; 3. Drive gear; 4. Connecting rotating plate; 5. Driven gear; 6. Mounting bracket; 7. Gear plate; 8. Fixed bracket; 9. Output motor; 10. Support rotating rod; 11. Support rotating plate; 12. Support rod; 13. Fixing mechanism; 1301. Heat insulation shell; 1302. Central support column; 1303. Support protrusion; 1304. Limiting rod; 1305. Connecting support column; 1306. Adjusting slider; 1307. Compression spring; 1308. Inner support clamp; 1309. Limiting slide groove; 14. Empty groove; 15. Heat insulation plate; 16. Circuit board; 17. Heating tube; 18. Control power supply; 19. Sealed door panel; 20. Handle. Detailed Implementation

[0014] The technical solution of this application will be further described in detail below with reference to specific embodiments.

[0015] like Figures 1-6As shown, the present application provides a technical solution: a batch diaphragm spring stress relief annealing device, comprising an annealing furnace 1, two sealing door plates 19 are symmetrically connected on one side of the annealing furnace 1, two handles 20 are symmetrically fixed and installed on one side of the two sealing door plates 19, and a sealing top cover 2 is fixedly installed on the top of the annealing furnace 1. Because the sealing top cover 2 and the sealing door plate 19 are provided, the sealing top cover 2 and the sealing door plate 19 can well close the annealing furnace 1, prevent heat loss during the annealing process, and ensure that the annealing process is carried out in a relatively stable thermal environment.

[0016] Two heat insulation plates 15 are fixedly installed in two empty grooves 14 symmetrically arranged on both sides of the annealing furnace 1, and the directions of the two heat insulation plates 15 are opposite. Because the heat insulation plate 15 is provided, the heat insulation plate 15 can effectively reduce the loss of heat in the annealing furnace 1 to the outside, improve the utilization efficiency of heat, and at the same time protect the surrounding environment outside the heating pipe 17 from being affected by high temperature, avoiding the scalding of the operator.

[0017] A circuit board 16 is fixedly installed at the center position of the heat insulation plate 15, a plurality of heating pipes 17 are arranged between the inner walls of the heat insulation plate 15, the arrangement of the plurality of heating pipes 17 can make the heat in the annealing furnace 1 more evenly distributed, ensure that the diaphragm spring can be evenly heated during the annealing process, improve the quality of annealing, the circuit board 16 is connected with the plurality of heating pipes 17, and a control power supply 18 is fixedly installed on the outer wall of the heat insulation plate 15 and connected with the circuit board 16.

[0018] A driving gear 3 is rotatably connected to the center position of the inner wall of the sealing top cover 2, a connecting rotating plate 4 is arranged above the driving gear 3, the connecting rotating plate 4 is fixed to the sealing top cover 2, the driving gear 3 is rotatably connected with the center position of the connecting rotating plate 4, two driven gears 5 are rotatably connected to both ends of the connecting rotating plate 4, and the two driven gears 5 are engaged with the driving gear 3. Because the connecting rotating plate 4 is provided, the connecting rotating plate 4 ensures the stability of the positions of the driving gear 3 and the driven gear 5, avoiding the position deviation of the two driven gears 5 during rotation. The inner wall of the sealing top cover 2 is fixedly installed with a mounting bracket 6, the sealing top cover 2 is fixedly installed with a toothed plate 7 through the mounting bracket 6, the teeth of the toothed plate 7 are directed inward, the two driven gears 5 are engaged with the toothed plate 7, through the cooperation between the driving gear 3, the driven gear 5 and the toothed plate 7, the driving gear 3 drives the two driven gears 5 to rotate around themselves, and the driven gears 5 rotate synchronously under the action of the toothed plate 7, so that the diaphragm spring rotates in the annealing furnace 1 for uniform heating annealing.

[0019] The upper part of the sealing top cover 2 is fixedly installed with a fixed support 8, the sealing top cover 2 is fixedly installed with an output motor 9 through the fixed support 8, the output end of the output motor 9 is connected with the driving gear 3, through the cooperation between the fixed support 8 and the output motor 9, the output motor 9 is fixed through the fixed support 8, which ensures the firm connection between the output motor 9 and the driving gear 3, and at the same time, the output motor 9 can stably provide power for the driving gear 3, thereby ensuring the continuous and stable operation of the device.

[0020] The bottom of the two driven gears 5 is fixedly connected with two support rotating rods 10 at the center position respectively, the two support rotating rods 10 extend into the annealing furnace 1, the bottom of the annealing furnace 1 is rotationally connected with a support rotating plate 11, and the two ends of the support rotating plate 11 are rotationally connected with the bottom ends of the two support rotating rods 10 respectively. Since the support rotating rods 10 are provided, during the rotation of the two support rotating rods 10 around the center of the annealing furnace 1, the support rotating rods 10 rotate at the bottom of the annealing furnace 1 following the support rotating rods 10, and the support rotating plate 11 provides stable support for the support rotating rods 10, so that the support rotating rods 10 do not shake during the rotation, thereby ensuring that the movement of the diaphragm spring is more stable.

[0021] The outer wall of the support rotating rod 10 is fixedly connected with a plurality of support rods 12, the end of the support rod 12 is provided with a fixing mechanism 13, and the plurality of fixing mechanisms 13 are arranged so that each diaphragm spring being annealed has its independent position in the annealing furnace 1 for annealing, which not only can be operated in batches, but also avoids the way of stacking diaphragm springs for annealing; the fixing mechanism 13 comprises a heat insulation shell 1301, due to the heat insulation shell 1301, the components inside the heat insulation shell 1301 are protected during the heating process of the heating pipe 17, so as to avoid the damage of the components inside the heat insulation shell 1301 under long-term high temperature, the inner wall of the heat insulation shell 1301 is fixedly connected with a center support 1302 at the center position, the inner wall of the heat insulation shell 1301 is fixedly connected with three support protrusions 1303 at three equal division points respectively, and the support protrusions 1303 and the center support 1302 are fixedly connected with a limiting rod 1304; the outer wall of the connecting support 1305 is slidingly connected with an adjusting sliding block 1306, and the limiting rod 1304 penetrates through the adjusting sliding block 1306; the outer wall of the connecting support 1305 is sleeved with a compression spring 1307 between the adjusting sliding block 1306 and the center support 1302.

[0022] The limiting rod 1304 can limit the adjusting slider 1306, avoid the adjusting slider 1306 from turning over during sliding, through the cooperation between the connecting column 1305 and the limiting rod 1304, the connecting column 1305 provides a sliding track for the adjusting slider 1306, and the limiting rod 1304 further limits the movement direction of the adjusting slider 1306, so that the adjusting slider 1306 can only slide in the specified direction, thereby improving the stability of the inner support clamp plate 1308 during sliding and clamping. The compression spring 1307 can provide elastic restoring force, and plays a role in automatic adjustment and clamping when fixing the diaphragm spring, so that the diaphragm spring can be stably fixed above the heat insulation shell 1301.

[0023] The top plate of the adjusting slider 1306 is fixedly connected with the inner support clamp plate 1308, and the top end of the inner support clamp plate 1308 is designed in an inclined manner. The inclined design of the top end of the inner support clamp plate 1308 facilitates the sleeving of the diaphragm spring, and when the diaphragm spring is sleeved, the inner wall of the diaphragm spring will be pressed against the inner support clamp plate 1308 along the inclined surface of the end of the inner support clamp plate 1308, so that the inner support clamp plate 1308 can be more smoothly retracted, thereby improving the operation convenience of fixing the diaphragm spring. The top of the heat insulation shell 1301 is provided with three limiting sliding grooves 1309 which are uniformly distributed at equal angles towards the center, and the inner support clamp plate 1308 penetrates through the limiting sliding grooves 1309 and slides in the limiting sliding grooves 1309. Because the limiting sliding grooves 1309 are provided, the limiting sliding grooves 1309 provide space for the sliding of the inner support clamp plate 1308, so that the inner support clamp plate 1308 can move in the designed manner, and the limiting sliding grooves 1309 can limit the movement range of the inner support clamp plate 1308, so as to avoid that the sliding range of the inner support clamp plate 1308 is too large.

[0024] The working principle of the present application is that: when using the device, the diaphragm spring is fixed in the annealing furnace 1 through the fixing mechanism 13, and when fixing the diaphragm spring, the diaphragm spring is sleeved on the outer wall of the three inner support clamping plates 1308, the three inner support clamping plates 1308 are extruded by the inner wall of the diaphragm spring and slide in the limiting sliding groove 1309 to shrink inward, the inner support clamping plate 1308 drives the adjusting sliding block 1306 at the bottom to slide on the outer wall of the connecting column 1305 and the limiting rod 1304 during the shrinking process, the adjusting sliding block 1306 extrudes the compression spring 1307 during the sliding process on the outer wall of the connecting column 1305, the compression spring 1307 shrinks after being extruded, and the elastic force of the compression spring 1307 drives the adjusting sliding block 1306 to expand outward, thereby driving the three inner support clamping plates 1308 to expand outward, the three inner support clamping plates 1308 expand in the inner wall of the diaphragm spring, and the diaphragm spring is fixed and clamped between the inner walls of the diaphragm spring, so that the diaphragm spring is fixed in the annealing furnace 1, after the two sealing door plates 19 are closed, the control circuit board 16 is controlled through the control power supply 18 to control the heating pipe 17 to heat, the heating pipe 17 heats in the heat insulation plate 15 to deliver heat to the annealing furnace 1, when the heating pipe 17 heats, the output motor 9 drives the driving gear 3 to rotate, the driving gear 3 drives the two driven gears 5 meshed therewith to rotate during the rotation process, the two driven gears 5 rotate around the driving gear 3, and the driven gear 5 rotates itself under the action of the toothed plate 7 during the rotation process, the driven gear 5 drives the bottom support rotating rod 10 to rotate, the support rotating rod 10 drives the diaphragm spring to rotate around the center of the annealing furnace 1 and itself rotate around the support rotating rod 10 through the support rod 12 and the fixing mechanism 13 during the rotation process of the support rotating rod 10, so that the diaphragm spring is evenly heated to anneal, after the annealing is completed, the diaphragm spring is taken out for cooling by opening the sealing door plate 19, and the device is used.

[0025] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] In the present application, unless specifically defined otherwise or limited in the specification, terms such as "mount", "connected", "connecting", "fixed", and "coupling" are used broadly and encompass direct and indirect, wired and wireless, physical and logical coupling, and / or coupling through a medium. Such medium can be computer-readable medium, electrical circuit, electrical bus, electrical connection, electromagnetic, optical, radio frequency, and / or physical interface.

[0028] In the present application, unless specifically defined otherwise or limited in the specification, a first feature "on" or "under" a second feature can be directly on or under the second feature or can be indirectly on or under the second feature by way of one or more intermediate features. In the description of the specification, the terms "one aspect", "some aspects", "one embodiment", "some embodiments", "one example", "some examples", and / or "some implementations" mean that a particular feature, structure, material, or characteristic is included in at least one aspect or implementation of the present application. The appearances of the above terms in various places in the specification do not necessarily refer to the same aspect or implementation. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more aspects or implementations.

Claims

1. A batch diaphragm spring stress relief annealing device comprising an annealing furnace (1), characterized in that: The top of the annealing furnace (1) is fixedly provided with a sealing top cover (2), the inner wall of the sealing top cover (2) is rotatably connected with a driving gear (3) at the center position, the upper side of the driving gear (3) is provided with a connecting rotating plate (4), the driving gear (3) is rotatably connected with the center position of the connecting rotating plate (4), the two ends of the connecting rotating plate (4) are rotatably connected with two driven gears (5), the two driven gears (5) are engaged with the driving gear (3), the inner wall of the sealing top cover (2) is fixedly provided with a mounting bracket (6), the sealing top cover (2) is fixedly provided with a toothed plate (7) through the mounting bracket (6), the teeth of the toothed plate (7) are directed to the inner side, the two driven gears (5) are engaged with the toothed plate (7), the upper side of the sealing top cover (2) is fixedly provided with a fixed support (8), the sealing top cover (2) is fixedly provided with an output motor (9) through the fixed support (8), the output end of the output motor (9) is connected with the driving gear (3), the bottom of the two driven gears (5) is fixedly connected with two supporting rotating rods (10) at the center position, the two supporting rotating rods (10) extend into the annealing furnace (1), the bottom of the annealing furnace (1) is rotatably connected with a supporting rotating plate (11), the two ends of the supporting rotating plate (11) are rotatably connected with the bottom ends of the two supporting rotating rods (10), the outer wall of the supporting rotating rod (10) is fixedly connected with a plurality of supporting rods (12), the end of the supporting rod (12) is provided with a fixing mechanism (13).

2. A batch diaphragm spring stress relief annealing device according to claim 1, characterized in that: The fixing mechanism (13) comprises a heat insulation shell (1301), a center support (1302) is fixedly connected between the inner walls of the heat insulation shell (1301) at the center position, three supporting blocks (1303) are fixedly connected to the inner walls of the heat insulation shell (1301) at three equal division points, respectively, a limiting rod (1304) is fixedly connected between the supporting blocks (1303) and the center support (1302).

3. A batch diaphragm spring stress relief annealing device according to claim 2, characterized in that: The connecting support (1305) is fixedly connected below the limiting rod (1304) between the supporting blocks (1303) and the center support (1302), the outer wall of the connecting support (1305) is slidably connected with an adjusting sliding block (1306), the limiting rod (1304) penetrates through the adjusting sliding block (1306), and the outer wall of the connecting support (1305) is sleeved with a compression spring (1307) between the adjusting sliding block (1306) and the center support (1302).

4. A batch diaphragm spring stress relief annealing apparatus as claimed in claim 3, wherein: The top plate of the adjusting sliding block (1306) is fixedly connected with an inner supporting clamping plate (1308), the top end of the inner supporting clamping plate (1308) is designed in an inclined manner, three limiting sliding grooves (1309) are formed in the top of the heat insulation shell (1301), and the inner supporting clamping plate (1308) penetrates through the limiting sliding grooves (1309) and slides in the limiting sliding grooves (1309).

5. The apparatus of claim 1 wherein: the plurality of membrane springs are arranged in a plurality of rows; and the plurality of rows are arranged in a plurality of columns. Two empty slots (14) are symmetrically arranged on two sides of the annealing furnace (1), two heat insulation plates (15) are respectively fixedly installed in the two empty slots (14), and the two heat insulation plates (15) are opposite in direction.

6. A batch diaphragm spring stress relief annealing device as claimed in claim 5, characterized in that: A plurality of heating pipes (17) are arranged between the inner walls of the heat insulation plate (15), and the circuit board (16) is connected with the plurality of heating pipes (17).

7. A bulk diaphragm spring stress relief annealing apparatus as defined in claim 5, wherein: A control power supply (18) is fixedly installed on the outer wall of the heat insulation plate (15), and the control power supply (18) is connected with the circuit board (16).

8. The bulk diaphragm spring stress relief annealing apparatus of claim 1, wherein: Two sealing door plates (19) are symmetrically rotationally connected on one side of the annealing furnace (1), and two handles (20) are symmetrically fixedly installed on one side of the two sealing door plates (19).

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