Stamping device for producing explosion-proof three-phase asynchronous motor shell

CN224642162UActive Publication Date: 2026-08-18LIANYUNGANG RUIBAO MOTOR CO LTD
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Patent Information

Application Number
CN202521944293.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-10
Publication Date
2026-08-18
Estimated Expiration
2035-09-10

AI Technical Summary

Technical Problem

传统用于电动机外壳生产的冲压装置,在结构稳定性方面存在不足,支撑部件的固定方式简单,易在长期高频冲压作业中出现松动,导致装置整体晃动,影响冲压精度;同时,缺乏有效的定位机构,承载工件的平台在冲压过程中易发生位移,使得生产出的外壳尺寸偏差较大,难以满足防爆外壳的严格标准,此外,传统装置的防护措施简陋,多数仅依靠简单的挡板进行防护,无法有效阻挡冲压过程中飞溅的金属碎屑,不仅对操作人员的安全构成威胁,还可能因碎屑附着在设备关键部位而影响装置的正常运行,增加了生产过程中的安全隐患和设备维护成本,为此我们提出了一种防爆型三相异步电动机外壳生产用冲压装置

Benefits of technology

该防爆型三相异步电动机外壳生产用冲压装置,在结构稳定性上,支撑限位杆末端穿过连接筒延伸至冲压底座的固定腔,并通过螺栓固定,为装置整体提供坚实支撑,保障冲压过程中结构稳固;冲压精度方面,承载冲压台通过底端承载定位块与冲压底座的承载定位槽对接,定位柱与定位槽插接配合,有效避免冲压时承载冲压台位移,为冲压精度奠定基础;同时,冲压支撑板滑动套接在支撑限位杆顶部,借助限位调节机构可灵活调整高度,调节时拉动调节限位杆脱离支撑限位杆的限位孔,调整到位后,第一弹簧推动调节限位杆插入对应限位孔完成固定,操作简便;安全性方面,防护透明玻璃安装在冲压支撑板四端的玻璃挡框内,其末端通过夹持组的施压夹板与冲压底座紧密贴合,形成封闭防护空间,防止碎屑飞溅,提升操作安全性;此外,伸缩筒在支撑限位杆与冲压支撑板相对滑动时起导向和防护作用,进一步保障装置运行稳定;夹持组中第二弹簧为施压夹板提供持续压力,确保防护透明玻璃安装牢固。

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Abstract

The utility model relates to the technical field of asynchronous motor production, and disclose a stamping device for production of explosion -proof three -phase asynchronous motor shell, contain stamping board, stamping support board, bearing stamping station and stamping base, stamping base top four corners insert support limiting rod, its top sliding sleeve stamping support board, the inside of board has electric cylinder, piston shaft penetrates the board and connects the stamping board, the inside bearing stamping station of stamping base top is located below the stamping board, and the top four ends of stamping support board have two groups of symmetrical limiting adjustment mechanism, the bottom end of the protection transparent glass slidingly installed in the four ends of stamping support board corresponds with the clamping group, and the tail end of support limiting rod is connected to fixed cavity through connecting cylinder, and is fixed through bolt, the limiting hole of adjusting lever and support limiting rod corresponds, can adjust the height of stamping support board, fixed protection transparent glass, when starting, the motor shell is placed in bearing stamping station, and the electric cylinder drives the stamping board to slide along the support limiting rod, and the stamping head is matched with bearing stamping station and completes stamping.
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Description

Technical Field

[0001] This utility model relates to the field of asynchronous motor manufacturing technology, specifically a stamping device for producing the casing of an explosion-proof three-phase asynchronous motor. Background Technology

[0002] Explosion-proof three-phase asynchronous motors are power equipment that can operate safely in flammable and explosive environments. They are widely used in industries with potential explosion risks, such as petroleum, chemical, and coal mining. Their housings, as key structures protecting internal core components and isolating them from external hazardous environments and internal electrical components, possess high strength, excellent sealing, and precise dimensional specifications to ensure the motor's explosion-proof performance and operational stability under complex working conditions. Stamping equipment, as an important tool in producing such housings, undertakes the crucial task of processing metal sheets into housing shapes that meet design requirements. Therefore, reliable, precise, and high-safety-factor stamping equipment is the core guarantee for ensuring the production quality of explosion-proof three-phase asynchronous motor housings. Traditional stamping equipment used for producing motor housings suffers from structural instability. The simple fixing methods for support components make them prone to loosening during long-term, high-frequency stamping operations, leading to overall equipment wobbling and affecting stamping accuracy. Furthermore, the lack of an effective positioning mechanism allows the workpiece-bearing platform to easily shift during stamping, resulting in significant dimensional deviations in the produced housings and failing to meet the stringent standards for explosion-proof housings. In addition, traditional equipment employs rudimentary protective measures, often relying solely on simple baffles, which are ineffective in preventing the splashing of metal debris during stamping. This not only threatens the safety of operators but may also disrupt normal operation due to debris adhering to critical parts of the equipment, increasing safety hazards and equipment maintenance costs. Therefore, we propose a stamping equipment for producing explosion-proof three-phase asynchronous motor housings. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a stamping device for producing explosion-proof three-phase asynchronous motor housings, thus solving the aforementioned problems.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a stamping device for producing explosion-proof three-phase asynchronous motor housings, comprising: The stamping base comprises a stamping plate, a stamping support plate, a bearing stamping table, and a stamping base. Supporting limit rods are inserted into the four corners of the top of the stamping base. A stamping support plate is slidably sleeved onto the top of multiple supporting limit rods. An electric cylinder is installed on the inner top side of the stamping support plate. The piston shaft of the electric cylinder passes through the stamping support plate and connects to the stamping plate. A stamping head is provided at the bottom end of the stamping plate. The stamping plate is slidably sleeved onto the supporting limit rods. A bearing stamping table is installed on the inner top side of the stamping base, and the bearing stamping table is located below the stamping plate. The limit adjustment mechanism is set on the top of the stamping support plate. Two sets of symmetrically distributed limit adjustment mechanisms are set at the four ends of the top of the stamping support plate, and each set of limit adjustment mechanisms corresponds to each support limit rod. The clamping assemblies are set at the four ends of the stamping base. Protective transparent glass is slidably installed at the four ends of the stamping support plate. The bottom end of the protective transparent glass corresponds to the clamping assemblies and is used to clamp and fix the installation of the protective transparent glass.

[0005] Preferably, the top inner side of the stamping base is provided with a bearing positioning groove, and the bearing positioning groove is provided with four axially symmetrical positioning columns. The bottom end of the bearing stamping table is provided with a bearing positioning block, and the bottom end of the bearing positioning block is provided with four axially symmetrical positioning grooves. The bearing positioning block is set inside the bearing positioning groove, and the positioning columns are inserted into the positioning grooves.

[0006] Preferably, the stamping base has connecting cylinders at the top four corners, and a fixing cavity is formed on the inner side of the four corners of the stamping base. The fixing cavity corresponds to the connecting cylinder. The end of the support limiting rod extends through the connecting cylinder into the interior of the fixing cavity, and the end of the support limiting rod is fixedly connected inside the fixing cavity by bolts.

[0007] Preferably, the limiting adjustment mechanism consists of an adjusting limiting rod and a first spring. The top four ends of the stamping support plate are provided with symmetrical protective shells. The adjusting limiting rod is installed inside the protective shell. The first spring is sleeved on the adjusting limiting rod and is located inside the protective shell. The four corners of the stamping support plate are provided with telescopic cylinders. The front ends of two vertically adjacent adjusting limiting rods penetrate the protective shell and correspond to one corner of the stamping support plate, respectively.

[0008] Preferably, the cylindrical surface of the support limiting rod has two sets of multiple equidistant limiting holes, the two sets of limiting holes are vertically adjacent, and the top end of the support limiting rod slides through the telescopic cylinder, wherein the front end of the adjusting limiting rod corresponds to the limiting hole.

[0009] Preferably, the clamping assembly consists of a pressure clamping plate and a second spring. The second spring is provided on both sides of the back of the pressure clamping plate. The four ends of the stamping base are provided with pressure telescopic cavities. The ends of the pressure clamping plate and the second spring are distributed inside the pressure telescopic cavities. The front end of the pressure clamping plate is located on the outside of the stamping base.

[0010] Preferably, the four ends of the stamping support plate are provided with glass baffles, and protective transparent glass is slidably installed inside the glass baffles. The ends of the protective transparent glass are tightly fitted to the four ends of the stamping base through the front end of the pressure clamp.

[0011] Compared with the prior art, this utility model provides a stamping device for producing explosion-proof three-phase asynchronous motor housings, which has the following advantages: This stamping device for producing explosion-proof three-phase asynchronous motor housings features a robust structural stability system. The end of the support limiting rod extends through the connecting cylinder to the fixed cavity of the stamping base and is secured with bolts, providing solid support for the entire device and ensuring structural stability during stamping. Regarding stamping accuracy, the bearing stamping table aligns with the bearing positioning groove of the stamping base via a bottom bearing positioning block, and the positioning column engages with the positioning groove, effectively preventing displacement of the bearing stamping table during stamping and laying the foundation for stamping accuracy. Simultaneously, the stamping support plate slides onto the top of the support limiting rod, and its height can be flexibly adjusted using a limit adjustment mechanism. Adjustment is achieved by pulling the adjustment lever. After the limiting rod disengages from the limiting hole of the supporting limiting rod and is adjusted to the correct position, the first spring pushes the adjusting limiting rod to insert into the corresponding limiting hole to complete the fixation, making the operation simple. In terms of safety, the protective transparent glass is installed in the glass baffle frame at the four ends of the stamping support plate. Its end is tightly fitted to the stamping base through the pressure clamping plate of the clamping assembly, forming a closed protective space to prevent debris from flying and improve operational safety. In addition, the telescopic cylinder plays a guiding and protective role when the supporting limiting rod slides relative to the stamping support plate, further ensuring the stable operation of the device. The second spring in the clamping assembly provides continuous pressure to the pressure clamping plate to ensure that the protective transparent glass is firmly installed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the stamping base structure of this utility model; Figure 4 This is a schematic diagram of the stamping support plate structure of this utility model.

[0013] In the diagram: 1. Electric cylinder; 2. Stamping plate; 3. Stamping support plate; 4. Adjusting limit rod; 5. First spring; 6. Support limit rod; 7. Protective transparent glass; 8. Bearing stamping table; 9. Bearing positioning block; 10. Stamping base; 11. Pressure clamping plate; 12. Second spring; 13. Bearing positioning groove; 14. Connecting cylinder; 15. Fixed cavity; 16. Pressure telescopic cavity; 17. Protective shell; 18. Telescopic cylinder; 19. Glass frame. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 A stamping device for producing explosion-proof three-phase asynchronous motor housings, comprising: The stamping base includes a stamping plate 2, a stamping support plate 3, a bearing stamping table 8, and a stamping base 10. Supporting limit rods 6 are inserted into the four corners of the top of the stamping base 10. The top of the multiple supporting limit rods 6 is slidably sleeved with the stamping support plate 3. An electric cylinder 1 is provided on the inner side of the top of the stamping support plate 3. The piston shaft of the electric cylinder 1 passes through the stamping support plate 3 and is connected to the stamping plate 2. A stamping head is provided at the bottom of the stamping plate 2. The stamping plate 2 is slidably sleeved on the supporting limit rods 6. The bearing stamping table 8 is provided on the inner side of the top of the stamping base 10. The bearing stamping table 8 is located below the stamping plate 2. The limit adjustment mechanism is set on the top of the stamping support plate 3. Two sets of symmetrically distributed limit adjustment mechanisms are set at the four ends of the top of the stamping support plate 3, and each set of limit adjustment mechanisms corresponds to each support limit rod 6. The clamping group is set at the four ends of the stamping base 10. The protective transparent glass 7 is slidably installed at the four ends of the stamping support plate 3. The bottom end of the protective transparent glass 7 corresponds to the clamping group and is used to clamp and fix the installation of the protective transparent glass 7.

[0016] Furthermore, a bearing positioning groove 13 is provided on the inner side of the top of the stamping base 10. The bearing positioning groove 13 has four symmetrical positioning columns inside. The bottom of the bearing stamping table 8 is provided with a bearing positioning block 9. The bottom of the bearing positioning block 9 has four symmetrical positioning grooves. The bearing positioning block 9 is set inside the bearing positioning groove 13. The positioning columns and positioning grooves are inserted and matched. Through the matching of the bearing positioning block 9 and the bearing positioning groove 13, and the insertion of the positioning columns and positioning grooves, the bearing stamping table 8 is provided with precise positioning to ensure that the bearing stamping table 8 will not be displaced during the stamping process.

[0017] Furthermore, the stamping base 10 has connecting cylinders 14 at its top four corners, and a fixing cavity 15 is formed on the inner side of the four corners of the stamping base 10. The fixing cavity 15 corresponds to the connecting cylinder 14. The end of the support limiting rod 6 extends through the connecting cylinder 14 into the interior of the fixing cavity 15, and the end of the support limiting rod 6 is fixedly connected inside the fixing cavity 15 by bolts. Extending the end of the support limiting rod 6 into the fixing cavity 15 through the connecting cylinder 14 and fixing it with bolts enhances the stability of the connection between the support limiting rod 6 and the stamping base 10, improves the stability of the overall structure of the device, and provides solid support for the safe and stable operation of the stamping operation.

[0018] Furthermore, the limit adjustment mechanism consists of an adjustment limit rod 4 and a first spring 5. The top of the stamping support plate 3 is provided with symmetrical protective shells 17 at its four ends. The adjustment limit rod 4 is installed inside the protective shell 17, and the first spring 5 is sleeved on the adjustment limit rod 4. The first spring 5 is located inside the protective shell 17. The four corners of the stamping support plate 3 are provided with telescopic cylinders 18. The front ends of two vertically adjacent adjustment limit rods 4 penetrate through the protective shell 17 and correspond to one corner of the stamping support plate 3, respectively. The height of the stamping support plate 3 can be adjusted by the cooperation of the adjustment limit rod 4 and the support limit rod 6, so that the height of the stamping support plate 3 can be flexibly changed according to the actual stamping requirements, improving the applicability of the device. At the same time, the protective shell 17 and the telescopic cylinder 18 play a protective and guiding role, ensuring the smoothness and safety of the adjustment process.

[0019] Furthermore, the cylindrical surface of the support limiting rod 6 is provided with two sets of multiple equidistant limiting holes. The two sets of limiting holes are vertically adjacent. The top end of the support limiting rod 6 slides through the telescopic cylinder 18. The front end of the adjusting limiting rod 4 corresponds to the limiting hole, thereby fixing the height of the stamping support plate 3. This ensures that the stamping support plate 3 can be stably fixed after being adjusted to a suitable height, preventing positional changes during the stamping process and ensuring the stability of the stamping operation.

[0020] Furthermore, the clamping assembly consists of a pressure clamping plate 11 and a second spring 12. The second spring 12 is provided on both sides of the back of the pressure clamping plate 11. The four ends of the stamping base 10 are provided with pressure telescopic cavities 16. The ends of the pressure clamping plate 11 and the second spring 12 are distributed inside the pressure telescopic cavities 16. The front end of the pressure clamping plate 11 is located on the outside of the stamping base 10. The pressure clamping plate 11 is pushed by the elastic force of the second spring 12 to clamp and fix the protective transparent glass 7, so that the protective transparent glass 7 can be installed stably, providing a guarantee for forming a closed protective space and enhancing the safety of the device during the stamping process.

[0021] Furthermore, the four ends of the stamping support plate 3 are provided with glass baffles 19, and protective transparent glass 7 is slidably installed inside the glass baffles 19. The ends of the protective transparent glass 7 are tightly fitted to the four ends of the stamping base 10 through the front end of the pressure clamp 11. The glass baffles 19 provide space for the installation and sliding of the protective transparent glass 7. The protective transparent glass 7 and the pressure clamp 11 cooperate to form a closed area, effectively blocking the debris splashed during the stamping process, protecting the safety of the operators, and at the same time facilitating the observation of the stamping situation.

[0022] Structural Description: Electric cylinder 1: It is the power source of the device, installed on the inner side of the top of the stamping support plate 3, and its piston shaft is connected to the stamping plate 2 to provide power for stamping; Stamping plate 2: It has a stamping head at the bottom, which is slidably sleeved on the support limit rod 6 and driven by the electric cylinder 1 to complete the stamping operation; Stamping support plate 3: It is slidably sleeved on the top of the support limit rod 6 and is used to install the electric cylinder 1 and support related components; Adjusting limit rod 4: It belongs to the limit adjustment mechanism and cooperates with the limit hole of the support limit rod 6 to realize the height fixation of the stamping support plate 3; First spring 5: It is sleeved on the adjusting limit rod 4 and installed inside the protective shell 17, which can push the adjusting limit rod 4 to reset. Support limit rod 6: The top end is slidably sleeved with the stamping support plate 3, and the end end is fixed to the stamping base 10, which serves as support and guide; Protective transparent glass 7: Slidably installed inside the glass frame 19, and cooperates with the pressure clamp 11 to form a closed protective space; 8: Located below the stamping plate 2, the workpiece is placed on the top and cooperates with the stamping head to complete the stamping. There is a bearing positioning block 9 at the bottom. Bearing positioning block 9: Located at the bottom of the bearing stamping table 8, it cooperates with the bearing positioning groove 13 to achieve precise positioning of the bearing stamping table 8; Stamping base 10: The basic component of the device, with a supporting limit rod 6 and a bearing stamping table 8 on the top, and clamping assemblies at the four ends; Pressure clamp 11: It is a clamping assembly that is pushed by the second spring 12 to fix the protective transparent glass 7 to the stamping base 10. Second spring 12: Inside the pressure telescopic cavity 16, it is connected to the pressure clamping plate 11, which provides the elastic force for clamping the protective transparent glass 7; Bearing positioning groove 13: There is a positioning post inside the top of the stamping base 10, which cooperates with the positioning groove of the bearing positioning block 9 for positioning; Connecting cylinder 14: Located at the four corners of the top of the stamping base 10, through which the supporting limiting rod 6 passes, corresponding to the fixing cavity 15; Fixed cavity 15: The ends of the support limit rods 6 extend into the inner sides of the four corners of the stamping base 10 and are fixed by bolts; Pressure-applying telescopic cavity 16: At the four ends of the stamping base 10, there are pressure-applying clamping plates 11 and second springs 12, which provide space for clamping; Protective shell 17: Adjustable limit rods 4 and first springs 5 ​​are installed at the four ends of the top of the stamping support plate 3 to provide protection; Telescopic cylinder 18: At the four corners of the stamping support plate 3, the top of the support limit rod 6 passes through it, serving as a guide and protection function; Glass frame 19: Protective transparent glass 7 is slidably installed inside the four ends of the stamping support plate 3 to provide installation space for it.

[0023] Working Principle: When the device is started, the motor housing is first placed on top of the bearing stamping table 8. The electric cylinder 1 serves as the power source, and its piston shaft drives the stamping plate 2 to slide vertically along the support limiting rod 6. The stamping head at the bottom of the stamping plate 2 moves downwards and cooperates with the bearing stamping table 8 below to complete the stamping forming operation of the motor housing. The bearing stamping table 8 achieves precise docking with the bearing positioning groove 13 on the inner side of the top of the stamping base 10 through the bearing positioning block 9 at the bottom. The insertion and cooperation between the positioning column and the positioning groove ensures that the bearing stamping table 8 will not shift during the stamping process, providing a basic guarantee for stamping accuracy. The support limiting rod 6 serves as the main support structure of the device. Its end extends through the connecting cylinder 14 into the fixed cavity 15 of the stamping base 10 and is fixed by bolts to ensure the stability of the overall structure. The stamping support plate 3 is slidably sleeved on the top of multiple support limiting rods 6. The height can be adjusted according to the actual stamping requirements through the limit adjustment mechanism. The adjustment limit in the limit adjustment mechanism... Rod 4 corresponds to the limiting hole on the cylindrical surface of the support limiting rod 6. When adjustment is required, pull the adjusting limiting rod 4 to disengage it from the limiting hole. At this time, the stamping support plate 3 can slide along the support limiting rod 6. After adjusting to the appropriate position, the first spring 5 will push the adjusting limiting rod 4 to re-insert into the corresponding limiting hole, thus fixing the stamping support plate 3. The telescopic cylinder 18 plays a guiding and protective role in the relative sliding between the support limiting rod 6 and the stamping support plate 3. To ensure the safety of the stamping process, the device is equipped with a protective structure. The protective transparent glass 7 is installed in the glass baffle 19 at the four ends of the stamping support plate 3 and can slide along it. When the protective transparent glass 7 is installed in place, the clamping group at the four ends of the stamping base 10 will fix it. The second spring 12 in the clamping group is located in the pressure telescopic cavity 16 and will apply elastic force to the pressure clamping plate 11, so that the front end of the pressure clamping plate 11 tightly fits the end of the protective transparent glass 7 with the stamping base 10, forming a closed protective space to prevent debris from flying during the stamping process and causing safety hazards.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping device for producing explosion-proof three-phase asynchronous motor housings, characterized in that, include: The stamping plate (2), the stamping support plate (3), the bearing stamping table (8) and the stamping base (10) are provided. The top four corners of the stamping base (10) are connected with support limiting rods (6). The top of the multiple support limiting rods (6) is slidably sleeved with the stamping support plate (3). The top inner side of the stamping support plate (3) is provided with an electric cylinder (1). The piston shaft of the electric cylinder (1) passes through the stamping support plate (3) and is connected to the stamping plate (2). The bottom end of the stamping plate (2) is provided with a stamping head. The stamping plate (2) is slidably sleeved on the support limiting rods (6). The top inner side of the stamping base (10) is provided with a bearing stamping table (8). The bearing stamping table (8) is located below the stamping plate (2). The limit adjustment mechanism is set on the top of the stamping support plate (3). Two sets of symmetrically distributed limit adjustment mechanisms are set at the four ends of the top of the stamping support plate (3), and each set of limit adjustment mechanisms corresponds to each support limit rod (6). The clamping group is set at the four ends of the stamping base (10). The four ends of the stamping support plate (3) are slidably installed with protective transparent glass (7). The bottom end of the protective transparent glass (7) corresponds to the clamping group and is used to clamp and fix the installation of the protective transparent glass (7).

2. The stamping device for producing explosion-proof three-phase asynchronous motor housings according to claim 1, characterized in that, The top inner side of the stamping base (10) is provided with a bearing positioning groove (13), and the bearing positioning groove (13) is provided with four axially symmetrical positioning columns. The bottom end of the bearing stamping table (8) is provided with a bearing positioning block (9), and the bottom end of the bearing positioning block (9) is provided with four axially symmetrical positioning grooves. The bearing positioning block (9) is set inside the bearing positioning groove (13), and the positioning columns are inserted into the positioning grooves.

3. The stamping device for producing explosion-proof three-phase asynchronous motor housings according to claim 1, characterized in that, The stamping base (10) has connecting cylinders (14) at the top four corners, and a fixing cavity (15) is opened on the inner side of the four corners of the stamping base (10). The fixing cavity (15) corresponds to the connecting cylinder (14). The end of the support limiting rod (6) extends through the connecting cylinder (14) into the interior of the fixing cavity (15), and the end of the support limiting rod (6) is fixedly connected inside the fixing cavity (15) by bolts.

4. The stamping device for producing explosion-proof three-phase asynchronous motor housings according to claim 1, characterized in that, The limiting adjustment mechanism consists of an adjusting limiting rod (4) and a first spring (5). The top four ends of the stamping support plate (3) are provided with symmetrical protective shells (17). The adjusting limiting rod (4) is installed inside the protective shell (17). The first spring (5) is sleeved on the adjusting limiting rod (4). The first spring (5) is set inside the protective shell (17). The four corners of the stamping support plate (3) are provided with telescopic cylinders (18). The front ends of two vertically adjacent adjusting limiting rods (4) penetrate the protective shell (17) and correspond to one corner of the stamping support plate (3) respectively.

5. A stamping device for producing explosion-proof three-phase asynchronous motor housings according to claim 3, characterized in that, The cylindrical surface of the support limiting rod (6) has two sets of multiple equidistant limiting holes. The two sets of limiting holes are vertically adjacent. The top end of the support limiting rod (6) slides through the telescopic cylinder (18). The front end of the adjusting limiting rod (4) corresponds to the limiting hole.

6. The stamping device for producing explosion-proof three-phase asynchronous motor housings according to claim 1, characterized in that, The clamping assembly consists of a pressure clamping plate (11) and a second spring (12). The second spring (12) is provided on both sides of the back of the pressure clamping plate (11). The four ends of the stamping base (10) are provided with pressure telescopic cavities (16). The ends of the pressure clamping plate (11) and the second spring (12) are distributed inside the pressure telescopic cavity (16). The front end of the pressure clamping plate (11) is provided on the outside of the stamping base (10).

7. A stamping device for producing explosion-proof three-phase asynchronous motor housings according to claim 1, characterized in that, The four ends of the stamping support plate (3) are provided with glass baffles (19), and protective transparent glass (7) is slidably installed inside the glass baffles (19). The ends of the protective transparent glass (7) are tightly fitted to the four ends of the stamping base (10) through the front end of the pressure clamp (11).