cold forming equipment for bearing cages with pressure regulation structure

Abstract

This invention relates to the field of bearing technology and discloses a cold forming equipment for bearing cages equipped with a pressure regulating structure. The equipment includes a lower mold base with a working platform, an upper mold base connected to the lower mold base via guide pillars, and an auxiliary mechanism. The auxiliary mechanism includes a material support platform, an adjustment component, and a mating component. After the annular blank is placed on the material support platform, its position is adjusted and limited by the cooperation of the adjustment component and the mating component. This cold forming equipment for bearing cages with a pressure regulating structure effectively solves the problems in existing technologies where the processing area is often designed to be exactly the same size as the cage, requiring precise alignment of the blank during placement, which is cumbersome and reduces production efficiency. Furthermore, the lack of effective limiting support for the inner and outer walls of the annular blank during processing easily leads to localized stress concentration, resulting in blank deformation and dimensional deviations.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, and more specifically to a cold forming equipment for bearing cages equipped with a pressure regulating structure. Background Technology

[0002] Bearings are fundamental components widely used in mechanical transmission. They typically consist of an inner ring, an outer ring, rolling elements, and a cage. The cage is used to separate the rolling elements and keep them evenly distributed. It is generally made from a ring-shaped blank through a stamping process.

[0003] In the existing cage forming process, the annular blank is usually placed on a work platform with matching inner and outer diameters, and stamping is completed by the cooperation of upper and lower dies. However, in order to ensure forming stability, the processing area is often designed to be exactly the same as the cage size. This design means that the blank needs to be precisely aligned with the processing area when placed, which is cumbersome and reduces production efficiency.

[0004] In addition, most existing forming equipment uses static support, which does not effectively limit and support the inner and outer walls of the ring blank. In some high-precision cage forming processes, this support method is prone to local stress concentration during processing, which can lead to problems such as blank deformation, dimensional deviation and even cracks, affecting the forming quality and service life of the cage. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a cold forming equipment for bearing cages equipped with a pressure regulating structure. This effectively solves the problem that in existing technologies, the processing area is often designed to be exactly the same size as the cage, which requires precise alignment of the blank with the processing area during placement, making the operation cumbersome and reducing production efficiency. Furthermore, the lack of effective limiting and support for the inner and outer walls of the annular blank during processing can easily lead to localized stress concentration, resulting in blank deformation, dimensional deviations, or even cracks.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a cold forming equipment for bearing cages equipped with a pressure regulating structure, comprising: The lower mold base has a working platform with its center facing upwards. The working platform has a receiving groove and an installation groove. The upper mold base is connected to the lower mold through a guide pillar. A punching head is set at the center of the upper mold facing downwards, and a pressure regulating unit is set on the punching head. The auxiliary mechanism is located inside the receiving groove to support the annular billet. The auxiliary mechanism includes a support platform for placing the annular billet, an adjustment component for adjusting the position of the annular billet is provided on the outer circumference of the support platform, and a matching component for cooperating with the adjustment component is provided on the inner circumference of the support platform. In this process, after the annular billet is placed on the receiving platform, the position of the annular billet is adjusted and limited by adjusting the working of the adjusting component and the cooperating component.

[0007] Furthermore, several bosses are provided on the material support platform along the circumferential direction. A sliding groove is provided between two adjacent bosses facing downwards. A support plate is connected inside the sliding groove through several spring rods and a compression spring. In the initial state, the support plates are at the same position and height as the bosses.

[0008] Furthermore, an adjustment seat with a telescopic lever on its outer circumference is rotatably installed inside the receiving groove. The telescopic end of the telescopic lever is rotatably connected to the moving end of a push rod installed inside the mounting groove. The inner circumference of the adjustment seat is provided with several arc-shaped grooves, and each of the arc-shaped grooves is provided with a guide block.

[0009] Furthermore, the adjustment assembly includes an annular plate fixedly installed inside the receiving groove. The material receiving platform is fixedly connected to the inner wall of the annular plate through several connecting blocks. Several limiting members are provided on the annular plate along the circumferential direction. The adjustment assembly also includes a strong magnetic block that is always located inside the arc-shaped groove. A ball bearing that is always in close contact with the guide block is rotatably installed on the side of the strong magnetic block near the guide block. The other side of the strong magnetic block is connected to the limiting member.

[0010] Furthermore, the limiting component includes a linkage block connected to a strong magnetic block. The linkage block slides through the arc-shaped groove and the annular plate, and an adjustment plate for realizing the limiting operation of the annular blank is connected to the side of the linkage block away from the strong magnetic block. The adjustment plate is connected to the annular plate through several telescopic rods.

[0011] Furthermore, the mating components include a support tray set inside the lower mold base by a number of limiting blocks. The support tray is provided with a mounting ring plate. The upper end of the mounting ring plate is provided with a pull rod corresponding to the position of a number of support plates. The pull rod slides upward through the support platform and connects to the support plate at the corresponding position.

[0012] Furthermore, the assembly also includes a drive component, which includes a drive rod connected to the output shaft of an external motor. The top end of the drive rod is rotatably connected to a support frame that is fixedly connected to the inner wall of the material receiving platform. Two threaded rods with opposite directions of rotation are provided on the drive rod along the vertical direction, wherein the lower threaded rod is threadedly connected to the material receiving platform.

[0013] Furthermore, an installation sleeve is threadedly connected to the outer wall of the upper threaded rod, and an adjustment sleeve is connected to the outer circumference of the installation sleeve through several rectangular plates.

[0014] The technical solution provided by this invention has the following advantages compared with the prior art: 1. In this invention, after the annular blank is roughly placed, the push rod extends and precisely pushes the adjusting seat to rotate through the telescopic lever at its end. The guide block pushes several evenly distributed adjusting plates to move synchronously toward the center, realizing automatic self-alignment. This ensures that the geometric center of the blank is completely aligned with the processing center of the equipment. This automatic self-alignment positioning mechanism ensures that each annular blank to be processed is in an absolutely precise starting position, thereby ensuring the uniformity and symmetry of the stamping process.

[0015] 2. After automatic self-aligning and positioning, the upper adjusting sleeve, driven by the corresponding threaded rod, begins to move downwards. Its outer edge gradually approaches and tightly fits against the outer wall of the annular blank. Simultaneously, the internal limiting structure, composed of adjusting plates, supports the blank from the inside. At this point, the annular blank is wrapped and supported by a clamp consisting of an inner (adjusting plate) and an outer (adjusting sleeve). When the upper die holder begins stamping under the drive of the pressure regulating unit, it evenly distributes the enormous, concentrated stamping pressure across the entire circumference, effectively suppressing any unexpected flow, wrinkling, or local instability that may occur during plastic deformation. By providing a stable and uniform constraint environment, it ensures that the material deforms in an orderly and controllable manner under high pressure according to the preset mold cavity. This not only effectively prevents serious defects such as blank deformation, dimensional deviations, and even cracking, but also significantly improves the internal uniformity of the cage and the distribution of residual stress after molding, thereby greatly improving the mechanical properties and service life of the product, directly resulting in higher product yield and lower scrap rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the annular blank of the workpiece in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the planar structure of an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the mold base and working platform according to an embodiment of the present invention; Figure 5This is a three-dimensional structural diagram of the adjusting seat and auxiliary mechanism according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the three-dimensional separation of the material receiving platform and the adjusting seat in an embodiment of the present invention; Figure 7 This is an embodiment of the present invention. Figure 6 A magnified structural diagram of part A in the middle; Figure 8 This is a schematic diagram of the three-dimensional separation of the adjusting seat, the annular plate, and the limiting member in an embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the adjusting seat, annular plate, and mating components in an embodiment of the present invention; Figure 10 This is a three-dimensional structural diagram of the working platform and driving components according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the three-dimensional separation of the support tray and the mounting ring plate in an embodiment of the present invention; Figure 12 This is a schematic diagram of the three-dimensional separation of the threaded rod, mounting sleeve, and bearing tray in an embodiment of the present invention.

[0018] The labels in the diagram represent: 100, ring-shaped billet; 1. Lower die base; 11. Working platform; 111. Receiving groove; 112. Mounting groove; 113. Adjustment seat; 1131. Arc groove; 1132. Guide block; 114. Telescopic lever; 2. Upper die base; 21. Guide support column; 22. Punching head; 23. Pressure regulating unit; 3. Auxiliary mechanism; 31. Material receiving platform; 311. Connecting block; 312. Boss; 313. Sliding groove; 314. Support plate; 315. Compression spring; 316. Spring rod; 32. Adjustment group Components; 321, Annular plate; 322, Limiting component; 3221, Linkage block; 3222, Adjusting plate; 3223, Telescopic rod; 323, Strong magnetic block; 324, Ball bearing; 33, Mating assembly; 331, Support plate; 332, Limiting block; 333, Mounting ring plate; 334, Pull rod; 335, Driving component; 3351, Driving rod; 3352, Support frame; 3353, Threaded rod; 3354, Mounting sleeve; 3355, Adjusting sleeve; 3356, Rectangular plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] Example: Please see Figure 1 - Figure 12 The present invention provides a technical solution: a cold forming equipment for bearing cages equipped with a pressure regulating structure, comprising: The lower mold base 1 has a working platform 11 with its center facing upwards. The working platform 11 has a receiving groove 111 and an installation groove 112. The upper mold base 2 is connected to the lower mold through the guide support 21. The upper mold has a punch head 22 facing downward at the center position, and the punch head 22 is equipped with a pressure regulating unit 23. Auxiliary mechanism 3 is installed inside the receiving groove 111 to support the annular billet 100; The auxiliary mechanism 3 includes a support platform 31 for placing the annular blank 100. The outer circumferential wall of the support platform 31 is provided with an adjustment component 32 for adjusting the position of the annular blank 100. The inner circumferential wall of the support platform 31 is provided with a cooperating component 33 for working in conjunction with the adjustment component 32. In this process, after the annular blank 100 is placed on the receiving platform 31, the position of the annular blank 100 is adjusted and limited by the operation of the adjusting component 32 and the cooperating component 33.

[0022] The material receiving platform 31 has several protrusions 312 arranged along the circumferential direction. A sliding groove 313 is opened downward between two adjacent protrusions 312. The sliding groove 313 is connected to a support plate 314 through several spring rods 316 and a compression spring 315. In the initial state, the support plates 314 are at the same position and height as the protrusions 312.

[0023] An adjusting seat 113 with a telescopic lever 114 on its outer circumference is rotatably disposed inside the receiving groove 111. The telescopic end of the telescopic lever 114 is rotatably connected to the moving end of a push rod disposed inside the mounting groove 112. The inner circumference of the adjusting seat 113 is provided with several arc-shaped grooves 1131, and each of the arc-shaped grooves 1131 is provided with a guide block 1132.

[0024] The adjustment assembly 32 includes an annular plate 321 fixedly disposed inside the receiving groove 111. The receiving platform 31 is fixedly connected to the inner wall of the annular plate 321 through several connecting blocks 311. Several limiting members 322 are arranged on the annular plate 321 along the circumferential direction. The adjustment assembly 32 also includes a strong magnetic block 323 that is always located inside the arc groove 1131. A ball bearing 324 that is always in close contact with the guide block 1132 is rotatably disposed on the side of the strong magnetic block 323 near the guide block 1132. The other side of the strong magnetic block 323 is connected to the limiting member 322.

[0025] The limiting component 322 includes a linkage block 3221 connected to the strong magnetic block 323. The linkage block 3221 slides through the arc-shaped groove 1131 and the annular plate 321, and is connected to an adjustment plate 3222 on the side away from the strong magnetic block 323 for limiting the annular blank 100. The adjustment plate 3222 is connected to the annular plate 321 through several telescopic rods 3223.

[0026] The cooperating component 33 includes a support tray 331 set inside the lower mold base 1 by a plurality of limiting blocks 332. The support tray 331 is provided with a mounting ring plate 333. The upper end of the mounting ring plate 333 is provided with a pull rod 334 corresponding to a plurality of support plates 314. The pull rods 334 slide upward through the support table 31 and connect to the support plates 314 at the corresponding positions.

[0027] The mating assembly 33 also includes a drive component 335, which includes a drive rod 3351 connected to the output shaft of an external motor. The top end of the drive rod 3351 is rotatably connected to a support frame 3352 fixedly connected to the inner wall of the material receiving platform 31. Two threaded rods 3353 with opposite directions of rotation are provided on the drive rod 3351 along the vertical direction. The lower threaded rod 3353 is threadedly connected to the material receiving platform 331.

[0028] The outer wall of the upper threaded rod 3353 is threaded with an installation sleeve 3354, and the outer circumference of the installation sleeve 3354 is connected to an adjustment sleeve 3355 by several rectangular plates 3356.

[0029] In specific operations, the placement and positioning of the annular blank 100 are as follows: In the existing cage forming process, the annular blank 100 is usually placed on the working platform 11 with matching inner and outer diameters, and stamping is completed by the cooperation of the upper and lower dies. However, in order to ensure the forming stability, the processing area is often designed to be exactly the same as the cage size. This design means that the blank needs to be precisely aligned with the processing area when placed, which is cumbersome and reduces production efficiency.

[0030] Furthermore, existing forming equipment mostly adopts a static support method, which does not effectively limit and support the inner and outer walls of the annular blank 100. This support method is prone to local stress concentration during processing, which can lead to problems such as blank deformation, dimensional deviation, and even cracks, affecting the forming quality and service life of the cage. Based on this, the bearing cage cold forming processing equipment equipped with a pressure regulation structure is equipped with an adjustment component 32 and a mating component 33. During the processing of the annular blank 100, it can not only adjust the position of the annular blank 100, but also limit the inner and outer walls of the annular blank 100 during processing, ensuring the stability of the forming process.

[0031] Specifically, when the annular blank 100 needs to be formed, firstly, the annular blank 100 is placed on the support platform 31 within the work platform 11. The support platform 31 supports the annular blank 100. (In the initial state, since the adjusting component 32 and the mating component 33 are not working, they will not obstruct the annular blank 100 during placement. Furthermore, there is no need to adjust the position of the annular blank 100 during placement; it can simply be placed on the support platform 31, effectively improving the feeding efficiency.) Meanwhile, the sliding groove 313 is internally equipped with… The support plate 314 is initially at the same horizontal height as the boss 312. The purpose of this is to improve the stability of the annular blank 100 during placement by increasing the contact area, thus laying the foundation for subsequent adjustment and limiting of the position of the annular blank 100. After the annular blank 100 is placed, the push rod set inside the mounting groove 112 and the motor connected to the drive rod 3351 are started simultaneously. The push rod and the motor drive the limiting member 322 and the drive member 335 respectively, thereby completing the position adjustment and limiting of the annular blank 100.

[0032] During the movement of the push rod's telescopic end, its top end is rotatably connected to the telescopic lever 114. Therefore, the telescopic end of the push rod pushes the adjusting seat 113 to rotate via the telescopic lever 114 (since the movement of the push rod's telescopic end is linear motion, while the rotation of the adjusting seat 113 is rotational, position compensation is achieved by compressing the telescopic lever 114 during the movement of the push rod's telescopic end). During the rotation of the adjusting seat 113, the guide block 1132 set inside the arc-shaped groove 1131 adjusts the position of the adjusting plate 3222. The adjustment of the position is achieved by the synchronous movement of several adjusting plates 3222, thereby adjusting the position of the annular blank 100 and limiting its outer wall. (The inner circumference of the adjusting seat 113 is provided with several arc-shaped grooves 1131, and each arc-shaped groove 1131 is provided with a guide block 1132. The side of the guide block 1132 near the adjusting plate 3222 is set as an arc surface. In the initial state, the ball 324 is located at the lowest end of the guide block 1132. During the rotation of the adjusting seat 113, the guide block 1132 moves from the lowest end.) The plate gradually moves towards the highest point, and during this process, the adjustment plate 3222 moves through the cooperation of the guide block 1132 and the ball bearing 324. Specifically, the adjustment plate 3222 is connected to an annular plate 321 fixedly installed inside the receiving groove 111 via several telescopic rods 3223. Furthermore, a linkage block 3221 that slides through the annular plate 321 is connected at the center of the adjustment plate 3222. The other end of the linkage block 3221 is fixedly connected to a strong magnet. The guide block 1132 pushes the adjustment plate 3222 towards the annular plate 3221. When the billet 100 moves in a certain direction, the telescopic rod 3223 is stretched, and the position of the annular billet 100 is adjusted by the adjusting plate 3222 to ensure that it is concentric and coaxial with the receiving platform 31. It should be noted that in order to avoid damage to the annular billet 100 during the limiting process, the side of the adjusting plate 3222 closest to the annular billet 100 is preferably made of a softer material, such as polytetrafluoroethylene. After the adjusting seat 113 is rotated, the strong magnet is magnetically attracted and fixed to the inner wall of the arc groove 1131 to ensure the stability of the position of the adjusting plate 3222.

[0033] Meanwhile, as the motor's output shaft drives the drive rod 3351 to rotate clockwise, several support plates 314 are simultaneously pulled and the inner wall of the annular blank 100 is adjusted and limited by threaded rods 3353 with different directions of rotation on the drive rod 3351. (Specifically, the drive rod 3351 is provided with two threaded rods 3353 distributed vertically and with opposite directions of rotation. The upper threaded rod 3353 is set with a right-hand thread, and the lower threaded rod 3353 is set with a left-hand thread. The motor's output shaft drives the drive rod 3351 to rotate counterclockwise.) At this time, the upper mounting sleeve 3354 will synchronously drive the adjusting sleeve to move upward through several rectangular plates 3356. The number of the adjusting sleeve corresponds to the number of rectangular plates 3356, and its top is conical, used to adjust the position of the annular blank 100 in the initial state. As the adjusting sleeve 3355 continues to move, the conical section of the adjusting sleeve transitions to the vertical section, and the vertical section is used to limit the inner wall of the annular blank 100. At the same time, when the drive rod 3351 rotates counterclockwise, the bearing plate 331 set on the left-hand thread moves downward, and the mounting ring plate 333 and the... Several pull rods 334 move downwards synchronously. During the movement of these pull rods 334, they pull the corresponding support plates 314, causing the spring rods 316 and compression springs 315 to be compressed. This ultimately allows the support plates 314 to enter the sliding groove 313, thus completing the repositioning of the support plates 314 and creating space for the subsequent downward pressing of the stamping head 22. It should be noted that, to prevent the bearing tray 331 and the mounting sleeve 3354 from rotating along with the corresponding threaded rods 3353, several limiting blocks 332 are provided on the outer circumference of the bearing tray 331. The limiting block 332 is slidably disposed inside the lower mold base 1 to ensure that the bearing tray 331 will not rotate with the threaded rod 3353 during movement. The inner wall of the bearing platform 31 is fixedly connected to a support frame 3352. The support frame 3352 is divided into a support plate that is rotatably connected to the drive rod 3351 and a strip plate that is disposed between adjacent adjusting sleeves 3355 and fixedly connected to the inner wall of the bearing platform 31. The subsequent movement of the adjusting sleeve 3355 will not disengage from the strip plate. The limiting work of the adjusting sleeve 3355 is achieved through several strip plates to ensure that it will not rotate with the threaded rod 3353.

[0034] The forming and unloading process of the ring-shaped billet 100: After completing the position adjustment and limiting work of the annular blank 100, the upper mold base 2 is driven to descend by the external drive setting, the guide pillar 21 is compressed by force, and the annular blank 100 is pressed down and formed by the punch head 22 during this process (the upper mold base 2 is also equipped with a pressure regulating unit 23, the purpose of which is to achieve the forming process of the annular blank 100 by applying pressure through the pressure regulating unit 23 when facing annular blanks 100 of different thicknesses).

[0035] During the forming process of the annular blank 100, the material selection of the retainer varies depending on the different usage environment, stress conditions and process requirements. However, in actual forming, the retainer will inevitably be subjected to greater pressure from above, and some material is prone to adhesion to the lower support platform 31, making it difficult for the retainer to detach smoothly from the support platform 31 after processing, resulting in difficulties in unloading. Based on this, the bearing retainer cold forming processing equipment equipped with a pressure regulating structure can simultaneously lift the formed retainer during the resetting process of the support tray 331. Specifically, after the forming process of the annular blank 100 is completed, the control motor drives the drive rod 3351 to reverse. During this process, the lower support tray 331 moves upward, and several pull rods 334 simultaneously drive the corresponding support plate 314 to move. When several support plates 314 move upward, their tops simultaneously lift the retainer, facilitating the subsequent unloading of the retainer.

[0036] The adjusting sleeve 3355 moves downward and disengages from the cage under the drive of the corresponding threaded rod 3353. At the same time, the control push rod is reset and the adjusting seat 113 is rotated through the telescopic lever 114, thereby causing several adjusting plates 3222 to move away from the cage synchronously. Finally, the cage is removed from the receiving platform 31.

[0037] It is worth emphasizing that the cold forming equipment for bearing cages equipped with a pressure regulating structure has the following main advantages: Firstly, in the initial standby state when the equipment is started, both the adjustment component 32 and the mating component 33 are in the retracted or non-working position. At this time, the operator only needs to place the annular blank 100 roughly in the central area of ​​the support platform 31 without any fine-tuning or alignment. The subsequent adjustment component 32 will actively and accurately position the blank. At the same time, the support plate 314 and the boss 312 inside the sliding groove 313 are flush with each other, forming a stable support surface. This effectively prevents the blank from tilting or rolling during placement, ensuring the stability of the initial placement. In this way, the preparation time of a single workpiece is greatly shortened, and efficiency is improved in continuous production.

[0038] Secondly, after the annular blank 100 is roughly placed, the push rod extends and precisely pushes the adjusting seat 113 to rotate through the telescopic lever 114 at its end. The guide block 1132 pushes several evenly distributed adjusting plates 3222 to move towards the center synchronously, realizing automatic self-alignment. This ensures that the geometric center of the blank is completely aligned with the processing center of the equipment. This automatic self-alignment positioning mechanism ensures that each annular blank 100 to be processed is in an absolutely precise starting position, thereby ensuring the uniformity and symmetry of the stamping process.

[0039] Thirdly, after the automatic self-aligning positioning is completed, the upper adjusting sleeve 3355 begins to move downward under the drive of the corresponding threaded rod 3353. Its outer edge limiting surface gradually approaches and forms a tight fit with the outer wall of the annular blank 100. At the same time, the limiting structure composed of the adjusting plate 3222 inside has completed the support of the blank from the inside. At this time, the annular blank 100 is wrapped and supported by a clamp composed of the inner (adjusting plate 3222) and the outer (adjusting sleeve 3355). When the upper die holder 2 starts to press under the drive of the pressure regulating unit 23, it will evenly distribute the huge and concentrated pressing force to the entire circumference, effectively suppressing the unexpected flow, wrinkling or local instability that may occur in the material during plastic deformation. By providing a stable and uniform constraint environment, the material is ensured to undergo orderly and controllable deformation under high pressure according to the preset mold cavity. This not only effectively prevents serious defects such as blank deformation, dimensional deviation, or even cracking, but also significantly improves the internal structure uniformity and residual stress distribution of the cage after molding, thereby greatly improving the mechanical properties and service life of the product, and directly resulting in higher product yield and lower scrap rate.

[0040] Fourthly, after the stamping process is completed, the equipment enters the unloading stage. The control motor drives the drive rod 3351 to reverse. During this process, several pull rods 334 located below the support plate 331 are synchronously driven to move upward. The other end of these pull rods 334 is connected to the support plate 314 in the sliding groove 313. Therefore, the support plate 314 is also lifted up, and its top end extends smoothly from the preset hole of the support plate 31, uniformly lifting the already formed retainer from the surface of the support plate 31 to a certain height. This lifting action breaks the vacuum adsorption or molecular adhesion between the retainer and the support plate 31 caused by huge pressure and material characteristics. At the same time, the external adjustment sleeve 3355 retracts upward, and the internal adjustment plate 3222 retracts outward synchronously under the drive of the push rod and the adjustment seat 113, completely releasing all the restrictions on the retainer. This active ejection unloading mechanism cleverly solves the common pain point of unloading difficulties in cold forming processes.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bearing cage cold-forming apparatus equipped with a pressure regulating structure, characterized by, include: The lower mold base (1) has a working platform (11) with its center facing upwards. The working platform (11) has a receiving groove (111) and an installation groove (112). Upper mold base (2), the upper mold base (2) is connected to the lower mold through guide pillar (21), and a punch head (22) is provided at the center of the upper mold facing downward, and a pressure regulating unit (23) is provided on the punch head (22). Auxiliary mechanism (3) is provided inside the receiving groove (111) to support the annular blank (100); The auxiliary mechanism (3) includes a support platform (31) for placing an annular blank (100), and the outer circumferential wall of the support platform (31) is provided with an adjustment component (32) for adjusting the position of the annular blank (100), and the inner circumferential wall of the support platform (31) is provided with a cooperating component (33) for cooperating with the adjustment component (32). In this process, after the annular blank (100) is placed on the support platform (31), the position of the annular blank (100) is adjusted and the limiting operation is achieved by adjusting the component (32) and the cooperating component (33). The receiving groove (111) is rotatably provided with an adjusting seat (113) on its outer circumferential wall, which has a telescopic lever (114) on its outer wall. The telescopic end of the telescopic lever (114) is rotatably connected to the moving end of a push rod provided inside the mounting groove (112). The inner circumferential wall of the adjusting seat (113) is provided with several arc-shaped grooves (1131), and each of the arc-shaped grooves (1131) is provided with a guide block (1132). The adjusting assembly (32) includes an annular plate (321) fixedly provided inside the receiving groove (111). The receiving platform (31) is fixedly connected to the inner wall of the annular plate (321) through several connecting blocks (311). Several limiting members (322) are provided on the annular plate (321) along the circumferential direction. The adjusting assembly (32) also includes The strong magnetic block (323) is always located inside the arc groove (1131). The strong magnetic block (323) is rotatably provided with a ball (324) that is always in close contact with the guide block (1132) on the side near the guide block (1132). The other side of the strong magnetic block (323) is connected to the limiting member (322). The limiting member (322) includes a linkage block (3221) connected to the strong magnetic block (323). The linkage block (3221) slides through the arc groove (1131) and the annular plate (321). An adjustment plate (3222) for realizing the limiting work of the annular blank (100) is connected on the side away from the strong magnetic block (323). The adjustment plate (3222) is connected to the annular plate (321) through several telescopic rods (3223). The mating assembly (33) further includes a driving component (335), which includes a driving rod (3351) connected to the output shaft of an external motor. The top end of the driving rod (3351) is rotatably connected to a support frame (3352) fixedly connected to the inner wall of the material receiving platform (31). The driving rod (3351) is provided with two threaded rods (3353) with opposite directions of rotation along the vertical direction. The outer wall of the upper threaded rod (3353) is threaded with an installation sleeve (3354). The outer circumferential wall of the installation sleeve (3354) is connected to an adjustment sleeve (3355) through several rectangular plates (3356).

2. The bearing cage cold-forming apparatus with pressure regulating structure according to claim 1, characterized in that: The material receiving platform (31) has several bosses (312) arranged along the circumferential direction. A sliding groove (313) is provided between two adjacent bosses (312) facing downward. The sliding groove (313) is connected to a support plate (314) through several spring rods (316) and a compression spring (315). In the initial state, several support plates (314) are at the same height as the bosses (312).

3. The bearing cage cold forming equipment equipped with a pressure regulating structure according to claim 2, characterized in that: The mating assembly (33) includes a support tray (331) set inside the lower mold base (1) by a number of limiting blocks (332). The support tray (331) is provided with a mounting ring plate (333). The upper end of the mounting ring plate (333) is provided with a pull rod (334) at a position corresponding to a number of support plates (314). The pull rods (334) slide upward through the material support platform (31) and are connected to the support plates (314) at the corresponding positions.

4. The bearing cage cold forming equipment equipped with a pressure regulating structure according to claim 3, characterized in that: The threaded rod (3353) located below is threadedly connected to the support plate (331).

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