A forming die for a ball bearing retainer facilitating demolding

Abstract

The utility model provides a ball bearing retainer forming die beneficial to stripping, belongs to retainer forming die technical field to solve the problem that the upper die and lower die can only realize the closing and opening of mould through the vertical reciprocating motion of upper die, lack reverse cooperative motion mechanism, including base, the base top fixed setting has the guide column, and four groups of guide columns between sliding setting have the mould frame, two groups of mould frame between fixed setting have linkage assembly, and the base top fixed setting has auxiliary structure, and linkage assembly presents symmetrical type and has two places, the lower mould inside fixed setting has stripping assembly, through setting up cross type linkage rod A and linkage rod B and auxiliary shaft, can when the hydraulic cylinder drives upper mould to move downward, make lower mould synchronous upward movement, further can make upper mould and lower mould reverse cooperative motion, this design effectively shortens the stroke distance required by upper mould to move, further improves the efficiency of stamping operation.

Description

Technical Field

[0001] This utility model belongs to the field of cage forming mold technology, and more specifically, it relates to a ball bearing cage forming mold that facilitates demolding. Background Technology

[0002] In the field of rolling bearing manufacturing, the cage, as one of the core components, plays a crucial role in separating and guiding the movement of rolling elements at equal intervals. Its manufacturing precision and performance directly determine the overall service life and operational stability of the bearing. The stamping technology of ball bearing cages, relying on high-precision mold design and manufacturing processes, has become a core means to achieve large-scale, high-efficiency production.

[0003] Traditional stamping dies generally adopt a structural design where the upper die moves in one direction and the lower die remains stationary. Since the upper and lower dies can only achieve mold closing and opening through the vertical reciprocating motion of the upper die, and lack a reverse coordinated motion mechanism, the upper die must complete the displacement of the entire stroke to complete a complete stamping cycle. This undoubtedly has an adverse effect on stamping efficiency, resulting in a reduction in stamping efficiency. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a ball bearing cage forming mold that facilitates demolding, thereby solving the problem mentioned in the background art that the upper and lower molds can only achieve mold closing and mold opening through the vertical reciprocating motion of the upper mold, lacking a reverse cooperative motion mechanism.

[0005] This utility model discloses a ball bearing cage molding die that facilitates demolding, achieved through the following specific technical means:

[0006] A ball bearing cage forming mold that facilitates demolding includes a base; a guide post is fixedly mounted on the top of the base, and a support frame is fixedly mounted on the top of the guide post, and a hydraulic cylinder is fixedly mounted on the top of the support frame; four sets of guide posts are symmetrically arranged, and mold frames are slidably arranged between the four sets of guide posts, and two sets of mold frames are symmetrically arranged; a lower mold is fixedly mounted on the top of one set of mold frames, and a mold cavity is opened inside the top side of the lower mold; and the other set of mold frames is fixedly connected to the telescopic end of the hydraulic cylinder.

[0007] A linkage component is fixedly installed between the two sets of mold frames, and an auxiliary structure is fixedly installed on the top of the base. The linkage component and the auxiliary structure are symmetrically arranged in two places. A demolding component is fixedly installed inside the lower mold, and a retainer body is placed on top of the demolding component. The auxiliary structure includes an auxiliary frame and an auxiliary shaft. The auxiliary frame is fixedly installed on both sides of the base. The auxiliary shaft is fixedly installed inside the top side of the auxiliary frame.

[0008] In at least some embodiments, the mold frame is rotatably provided with balls arranged in a circular array, and the outer side of the balls is in contact with the outer side of the guide post; another set of mold frames is fixedly provided with an upper mold at the bottom, and the upper mold is located directly above the lower mold.

[0009] In at least some embodiments, both the upper and lower molds are made of high wear-resistant mold steel, and the inner wall of the mold cavity and the forming bottom surface of the upper mold are both formed with a hard chromium plating layer by electroplating.

[0010] In at least some embodiments, the demolding assembly includes: a fixed cylinder, an ejector rod, a baffle, an ejector plate, and a positioning block; the fixed cylinder is fixedly disposed inside the lower mold; the ejector rod is slidably disposed inside the top side of the fixed cylinder; the baffle is fixedly disposed at the bottom end of the ejector rod and is movably disposed inside the fixed cylinder; the ejector plate is fixedly disposed at the top of the ejector rod, and a retainer body is placed on the top of the ejector plate; the positioning block is fixedly disposed on both sides of the ejector plate, and the positioning block is L-shaped; the inner side of the positioning block is in contact with the outer side of the retainer body, and the inner side of the top of the positioning block is chamfered.

[0011] In at least some embodiments, the demolding assembly further includes: a guide rod; the guide rod is fixedly disposed inside the fixed cylinder, and the guide rod is configured as a hexagonal structure; the guide rod is slidably disposed between the baffle and the ejector rod, and a spring is disposed between the bottom end of the guide rod and the bottom of the baffle.

[0012] In at least some embodiments, the linkage assembly includes: a linkage frame, a sliding seat A, a sliding seat B, a linkage rod A, and a linkage rod B; the linkage frame is fixedly disposed on the outside of the mold frame; the sliding seat A is slidably disposed on the outside of the linkage frame via a dovetail groove; the sliding seat B is slidably disposed on the outside of the linkage frame via a dovetail groove, and the sliding seat B and the sliding seat A are symmetrically disposed; both ends of the linkage rod A are rotatably disposed on the inside of the sliding seat A; both ends of the linkage rod B are rotatably disposed on the inside of the sliding seat B, and both the linkage rod B and the linkage rod A are rotatably disposed on the outside of the auxiliary shaft, and the linkage rod B and the linkage rod A are arranged in a cross configuration.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In this utility model, by setting up cross linkage rod A and linkage rod B and auxiliary shaft, the lower mold can move upward synchronously when the upper mold moves downward driven by the hydraulic cylinder; thus, the upper mold and the lower mold can move in opposite directions in a coordinated manner; this design effectively shortens the stroke distance required for the upper mold to move, thereby significantly improving the efficiency of stamping operation.

[0015] 2. In this utility model, by providing a guide rod and a spring, when the upper mold completes the stamping action and rises, the spring can accurately exert force with its own elastic potential energy to lift the ejector rod together with the ejector plate; during this process, the formed cage body is steadily ejected from the mold cavity; this design greatly facilitates the operator to remove the formed cage body from the mold cavity, effectively avoiding the problem of difficulty in removal caused by the cage body being stuck in the mold cavity after being stamped.

[0016] 3. In this utility model, by providing a positioning block, the stamping blank of the main body of the retainer can be accurately placed above the top plate, so that the upper die can accurately stamp the blank into the die cavity, which helps to prevent the blank from shifting during stamping. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the upper surface structure of the base of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the lower mold of this utility model.

[0020] Figure 4 This is a schematic diagram of the demolding component of this utility model.

[0021] Figure 5 This is a schematic diagram of the upper mold of this utility model.

[0022] Figure 6 This is a schematic diagram of the linkage component of this utility model.

[0023] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0024] 1. Base; 101. Guide column; 102. Support frame; 103. Hydraulic cylinder; 104. Mold frame; 105. Ball bearing; 106. Lower mold; 107. Mold cavity; 108. Upper mold;

[0025] 2. Demolding assembly; 201. Fixing cylinder; 202. Ejector rod; 203. Baffle; 204. Ejector plate; 205. Positioning block; 206. Guide rod;

[0026] 3. Auxiliary structure; 301. Auxiliary frame; 302. Auxiliary shaft;

[0027] 4. Linkage components; 401. Linkage frame; 402. Sliding seat A; 403. Sliding seat B; 404. Linkage rod A; 405. Linkage rod B;

[0028] 5. Main body of the cage. Detailed Implementation

[0029] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0030] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown:

[0031] This utility model provides a ball bearing cage forming mold that facilitates demolding, including a base 1; a guide post 101 is fixedly provided on the top of the base 1, and a support frame 102 is fixedly provided on the top of the guide post 101, and a hydraulic cylinder 103 is fixedly provided on the top of the support frame 102; four sets of guide posts 101 are symmetrically arranged, and a mold frame 104 is slidably arranged between the four sets of guide posts 101, and two sets of mold frames 104 are symmetrically arranged; a lower mold 106 is fixedly provided on the top of one set of mold frames 104, and a mold cavity 107 is opened inside the top side of the lower mold 106; and the other set of mold frames 104 is fixedly connected to the telescopic end of the hydraulic cylinder 103.

[0032] In this embodiment, a linkage component 4 is fixedly arranged between the two sets of mold frames 104, and an auxiliary structure 3 is fixedly arranged on the top of the base 1. Both the linkage component 4 and the auxiliary structure 3 are symmetrically arranged in two locations. A demolding component 2 is fixedly arranged inside the lower mold 106, and a retainer body 5 is placed above the demolding component 2. The auxiliary structure 3 includes an auxiliary frame 301 and an auxiliary shaft 302. The auxiliary frame 301 is fixedly arranged on both sides of the base 1. The auxiliary shaft 302 is fixedly arranged inside the top side of the auxiliary frame 301. A ball bearing 105 is rotatably arranged inside the mold frame 104. The 5 are arranged in a ring array, and the outer side of the ball bearing 105 is in contact with the outer side of the guide post 101; another set of mold frames 104 has an upper mold 108 fixedly installed at the bottom, and the upper mold 108 is located directly above the lower mold 106; both the upper mold 108 and the lower mold 106 are made of high wear-resistant mold steel, and the inner wall of the mold cavity 107 and the forming bottom surface of the upper mold 108 are formed with a hard chromium plating layer by electroplating process; its specific function is: the hard chromium plating layer installed on the inner wall of the mold cavity 107 and the forming bottom surface of the upper mold 108 can reduce the coefficient of friction and significantly reduce the demolding resistance.

[0033] Example 2: As shown in the attached document Figure 2 To be continued Figure 4As shown: Based on Embodiment 1, the demolding assembly 2 includes: a fixed cylinder 201, an ejector rod 202, a baffle 203, an ejector plate 204, a positioning block 205, and a guide rod 206; the fixed cylinder 201 is fixedly disposed inside the lower mold 106; the ejector rod 202 is slidably disposed inside the top side of the fixed cylinder 201; the baffle 203 is fixedly disposed at the bottom end of the ejector rod 202, and the baffle 203 is movably disposed inside the fixed cylinder 201; the ejector plate 204 is fixedly disposed at the top of the ejector rod 202, and a retainer body 5 is placed on the top of the ejector plate 204; the positioning block 205 is fixedly disposed on both sides of the ejector plate 204, and the positioning block 205 is L-shaped; the inner side of the positioning block 205 is connected to the retainer body 5. The outer side of the main body 5 is fitted together, and the inner side of the top of the positioning block 205 is chamfered; the guide vertical rod 206 is fixedly installed inside the fixed cylinder 201, and the guide vertical rod 206 is set as a hexagonal structure; the guide vertical rod 206 is slidably installed between the baffle 203 and the ejector rod 202, and a spring is installed between the bottom end of the guide vertical rod 206 and the bottom of the baffle 203; its specific function is: by setting the guide vertical rod 206 and the spring, when the upper mold 108 completes the stamping action and rises, the spring can accurately exert force with its own elastic potential energy to bounce the ejector rod 202 together with the ejector plate 204; during this process, the formed retainer main body 5 is steadily ejected from the mold cavity 107.

[0034] Example 3: As shown in the attached document Figure 1 With appendix Figure 6 As shown: Based on Embodiment 1 and Embodiment 2, the linkage component 4 includes: a linkage frame 401, a sliding seat A402, a sliding seat B403, a linkage rod A404, and a linkage rod B405; the linkage frame 401 is fixedly disposed on the outside of the mold frame 104; the sliding seat A402 is slidably disposed on the outside of the linkage frame 401 through a dovetail groove; the sliding seat B403 is slidably disposed on the outside of the linkage frame 401 through a dovetail groove, and the sliding seat B403 and the sliding seat A402 are symmetrically arranged; the two ends of the linkage rod A404 are rotatably disposed on the inside of the sliding seat A402. The two ends of the linkage B405 are rotatably mounted inside the sliding seat B403, and both linkage B405 and linkage A404 are rotatably mounted outside the auxiliary shaft 302, with linkage B405 and linkage A404 arranged in a cross configuration. Its specific function is that, by setting the cross linkage A404 and linkage B405 and the auxiliary shaft 302, when the hydraulic cylinder 103 drives the upper mold 108 to move downward, the lower mold 106 moves upward synchronously; thus, the upper mold 108 and the lower mold 106 can move in opposite directions in a coordinated manner.

[0035] The specific usage and function of this embodiment are as follows:

[0036] In this invention, during use, the retainer body 5 blank is placed between two sets of top plates 204 via the positioning block 205; then, the hydraulic cylinder 103 drives the mold frame 104 at its telescopic end to move downward, causing the linkage rod A404 and linkage rod B405 to rotate in opposite directions via the auxiliary shaft 302, and the sliding seat A402 and sliding seat B403 to slide in opposite directions, causing the lower mold 106 and its bottom mold frame 104 to move upward, thereby enabling the upper mold 108 and the lower mold 106 to move in opposite directions in coordination; the upper mold 108 presses the retainer body 5 blank into the mold cavity 107, while the positioning block 205... 05 and the ejector plate 204 are pressed into the lower mold 106, so that the blank of the retainer body 5 forms the retainer body 5; then the upper mold 108 is moved upward, so that the spring on the outside of the guide rod 206 pushes the baffle 203 and the ejector rod 202 upward, so that the ejector rod 202 pushes the formed retainer body 5 out of the mold cavity 107 through the ejector plate 204; the ball bearing 105 and the guide post 101 can ensure the sliding effect of the mold frame 104; the hard chromium plating layer provided on the inner wall of the mold cavity 107 and the forming bottom surface of the upper mold 108 can reduce the coefficient of friction and significantly reduce the demolding resistance.

Claims

1. A forming die for a cage of a ball bearing facilitating demolding, characterized by, include: A base (1); a guide column (101) is fixedly installed on the top of the base (1), and a support frame (102) is fixedly installed on the top of the guide column (101), and a hydraulic cylinder (103) is fixedly installed on the top of the support frame (102); four sets of guide columns (101) are arranged symmetrically, and a mold frame (104) is slidably arranged between the four sets of guide columns (101), and two sets of mold frames (104) are arranged symmetrically; a lower mold (106) is fixedly installed on the top of one set of mold frames (104), and a mold cavity (107) is opened inside the top side of the lower mold (106), and the other set of mold frames (104) is fixedly connected to the telescopic end of the hydraulic cylinder (103); A linkage component (4) is fixedly arranged between the two sets of mold frames (104), and an auxiliary structure (3) is fixedly arranged on the top of the base (1). The linkage component (4) and the auxiliary structure (3) are symmetrically arranged in two places. A demolding component (2) is fixedly arranged inside the lower mold (106), and a retainer body (5) is placed on top of the demolding component (2). The auxiliary structure (3) includes: an auxiliary frame (301) and an auxiliary shaft (302). The auxiliary frame (301) is fixedly installed on both sides of the base (1); the auxiliary shaft (302) is fixedly installed inside the top side of the auxiliary frame (301).

2. The ball bearing cage molding die for easy demolding according to claim 1, characterized in that: The mold frame (104) is equipped with rotating balls (105) inside, and the balls (105) are arranged in a ring array, and the outer side of the balls (105) is in contact with the outer side of the guide post (101); another set of mold frames (104) is fixedly equipped with an upper mold (108) at the bottom, and the upper mold (108) is located directly above the lower mold (106).

3. A forming die for a demoldable ball bearing cage according to claim 2, characterized in that: Both the upper mold (108) and the lower mold (106) are made of high wear-resistant mold steel, and the inner wall of the mold cavity (107) and the forming bottom surface of the upper mold (108) are formed with hard chromium plating by electroplating process.

4. The forming die for a plastic retainer of a ball bearing facilitating demolding according to claim 1, characterized in that: The demolding assembly (2) includes: a fixed cylinder (201), an ejector rod (202), a baffle (203), an ejector plate (204), and a positioning block (205); the fixed cylinder (201) is fixedly disposed inside the lower mold (106); the ejector rod (202) is slidably disposed inside the top side of the fixed cylinder (201); the baffle (203) is fixedly disposed at the bottom end of the ejector rod (202), and the baffle (203) is movably disposed inside the fixed cylinder (201); the ejector plate (204) is fixedly disposed at the top of the ejector rod (202), and a retainer body (5) is placed on the top of the ejector plate (204); the positioning block (205) is fixedly disposed on both sides of the ejector plate (204), and the positioning block (205) is L-shaped; the inner side of the positioning block (205) is in contact with the outer side of the retainer body (5), and the inner side of the top of the positioning block (205) is chamfered.

5. A forming die for a demoldable ball bearing cage according to claim 4, characterized in that: The demolding assembly (2) further includes: a guide rod (206); the guide rod (206) is fixedly installed inside the fixed cylinder (201), and the guide rod (206) is configured as a hexagonal structure; the guide rod (206) is slidably installed between the baffle (203) and the ejector rod (202), and a spring is provided between the bottom end of the guide rod (206) and the bottom of the baffle (203).

6. A forming die for a demoldable ball bearing cage according to claim 1, characterized in that: The linkage component (4) includes: a linkage frame (401), a sliding seat A (402), a sliding seat B (403), a linkage rod A (404), and a linkage rod B (405); the linkage frame (401) is fixedly installed on the outside of the mold frame (104); the sliding seat A (402) is slidably installed on the outside of the linkage frame (401) through a dovetail groove; the sliding seat B (403) is slidably installed on the outside of the linkage frame (401) through a dovetail groove, and the sliding seat B (403) and the sliding seat A (402) are symmetrically arranged; the two ends of the linkage rod A (404) are rotatably installed on the inside of the sliding seat A (402); the two ends of the linkage rod B (405) are rotatably installed on the inside of the sliding seat B (403), and the linkage rod B (405) and the linkage rod A (404) are both rotatably installed on the outside of the auxiliary shaft (302), and the linkage rod B (405) and the linkage rod A (404) are arranged in a cross manner.

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