Bidirectional hydraulic machine for brake pad
The bidirectional hydraulic press design solves the problems of uneven force and difficulty in removing brake pads during processing, achieving uniform force on both sides of the brake pads and automatic demolding, thus improving processing efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-07
AI Technical Summary
When using existing hydraulic presses to process heated semi-finished brake pads, uneven force is easily caused on one side, and the pads are difficult to remove at high temperatures, posing a risk of burns.
The design employs a two-way hydraulic press, in which a hydraulic cylinder pushes the die downward, and the piston rod and sealing sleeve squeeze the hydraulic oil to achieve the same direction movement of the die and punch, thus performing double-sided stamping and forming. Automatic demolding is achieved through the cooperation of the ejector rod and the movable plate.
This design achieves uniform force distribution on both sides of the brake pads, reducing the impact on finished product quality. It also facilitates automatic demolding and reduces the risk of burns.
Smart Images
Figure CN224087696U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of brake pad processing technology, and in particular to a bidirectional hydraulic press for brake pads. Background Technology
[0002] Brake pads are mostly curved, and these curved brake pads need to fit tightly against the curved surface of the brake disc to ensure uniform contact area and braking force during braking. During the manufacturing process, semi-finished parts are placed on a mold base. Heating the semi-finished parts facilitates stamping. The upper mold base, driven by a hydraulic cylinder, presses the semi-finished parts into the cavity of the lower mold base, achieving the desired shape. When the hydraulic cylinder raises the upper mold base, the mold closing state is released, exposing the finished brake pads in the cavity of the lower mold base. With the assistance of workers, demolding and material removal are then completed.
[0003] However, when using a conventional hydraulic press to extrude heated semi-finished brake pads, the unidirectional downward pressure can easily cause uneven stress on the other side of the brake pad. Furthermore, the high temperature pressure can cause the product embedded in the die to be heated and difficult to remove directly, increasing the risk of burns. Therefore, we propose a bidirectional hydraulic press for brake pads. Utility Model Content
[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a bidirectional hydraulic press for brake pads.
[0005] The technical solution of this utility model is as follows: A bidirectional hydraulic press for brake pads includes a hollow seat. A punch and a bracket are arranged on the top wall of the hollow seat. A hydraulic cylinder is installed on the top wall of the bracket. The output end of the hydraulic cylinder is connected to a die. A cavity is opened inside the hollow seat. An isolation box is installed on the top wall of the inner wall of the cavity. A piston plate and a lifting seat are arranged inside the isolation box. A support assembly is sleeved on the outer surface wall of the punch. The support assembly includes a second frame. A sleeve, a first spring, a first anti-detachment rod, and a first frame are installed at the bottom of the second frame. First movable plates are symmetrically arranged on the two side walls of the second frame. A second movable plate and a second anti-detachment rod are connected to the opposite side walls of the two first movable plates. A second spring is connected to the anti-detachment end of each of the two second anti-detachment rods. A pressing assembly is installed on the die. The pressing assembly includes an extension plate. A top rod and a piston rod are connected to the bottom wall of each of the two extension plates. A sealing sleeve is connected to the bottom end of a plurality of piston rods.
[0006] Preferably, the top wall of the hollow seat is provided with a first movable opening and a second movable opening, and the top structure of the lifting seat is disposed in the first movable opening and connected to the bottom wall of the punch.
[0007] Preferably, the piston plate is arranged inside the bottom opening of the isolation box, and the size of the piston plate is larger than the size of the bottom opening of the isolation box.
[0008] Preferably, the first frame is sleeved on the outer surface wall of the punch, the bottom ends of the plurality of first anti-detachment rods are all connected to the top wall of the first frame, and the plurality of sleeves are respectively sleeved on the anti-detachment ends of the first anti-detachment rods at the corresponding positions.
[0009] Preferably, the plurality of first springs are disposed in the sleeves corresponding to the positions, and the two ends of the plurality of first springs are respectively connected to the top of the inner wall of the sleeve and the anti-detachment end of the first anti-detachment rod.
[0010] Preferably, the second frame has symmetrically formed movable cavities, and the anti-detachment ends of the plurality of second anti-detachment rods are respectively set into the movable cavities corresponding to their positions. The plurality of second springs are respectively set in the movable cavities corresponding to their positions, and the two ends of the second springs are respectively connected to the movable cavity wall and the anti-detachment ends of the second anti-detachment rods.
[0011] Preferably, the sealing sleeve is disposed in the cavity, and the sealing sleeve is also sleeved on the outer surface wall of the isolation box. The bottom ends of the plurality of piston rods are respectively connected to the top wall of the sealing sleeve after passing through the second movable hole.
[0012] Compared with the prior art, the present invention has the following beneficial technical effects:
[0013] 1. This utility model uses a hydraulic cylinder to push the die down. In the lowered state, the die uses an extension plate, piston rod and sealing sleeve to squeeze the hydraulic oil in the hollow seat. Under the pressure, the piston plate works with the lifting seat to push the punch up, so that the die and punch move in the same direction. This achieves the purpose of double-sided stamping of the heated brake pad semi-finished product, reduces uneven stress and reduces the impact on the quality of the finished brake pad.
[0014] 2. This utility model, by lowering the push rod, can compress the second frame during the upward process, causing the two second movable plates to move in opposite directions under the action of the punch protrusion structure, gradually releasing the support for the brake pad semi-finished product, avoiding affecting the punch and die to stamp it, and during the reset process, the two second movable plates can be reset under the elastic action of the second spring, realizing the support for the formed brake pad, and in conjunction with the lowering of the punch, achieving the purpose of automatic demolding, providing convenience for material handling. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a two-way hydraulic press for brake pads;
[0016] Figure 2 yesFigure 1 A schematic diagram of the frontal cross-sectional structure;
[0017] Figure 3 yes Figure 2 A three-dimensional structural diagram showing a section of the bottom part of the central punch;
[0018] Figure 4 yes Figure 1 A three-dimensional structural diagram showing the cross-section of the central support component.
[0019] Figure 5 yes Figure 1 A three-dimensional structural diagram of the low-pressure component.
[0020] Reference numerals: 1. Hollow seat; 2. Bracket; 3. Hydraulic cylinder; 4. Die; 5. Punch; 6. Support assembly; 61. First frame; 62. First anti-detachment rod; 63. First spring; 64. Sleeve; 65. Second frame; 66. First movable plate; 67. Second movable plate; 68. Second anti-detachment rod; 69. Second spring; 7. Pressing assembly; 71. Extension plate; 72. Push rod; 73. Piston rod; 74. Sealing sleeve; 8. Lifting seat; 9. Piston plate; 10. Isolation box. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] Example 1
[0023] like Figures 1 to 5 As shown, this utility model proposes a bidirectional hydraulic press for brake pads, including a hollow seat 1, a bracket 2, a hydraulic cylinder 3, a die 4, and a punch 5. The bottom end of the support leg of the bracket 2 is fixedly connected to the top wall of the hollow seat 1, and the hydraulic cylinder 3 is fixedly installed on the top wall of the bracket 2, supported by the bracket 2. The die 4 is located below the top plate of the bracket 2, and a sliding hole is opened on the top plate of the bracket 2. The output end of the hydraulic cylinder 3 passes through the sliding hole and is fixedly connected to the outer wall of the die 4, which facilitates the lifting and lowering of the die 4. The punch 5 is located at the top of the hollow seat 1. The lifting seat 8, piston plate 9, and isolation box 10 are all set in the cavity opened in the hollow seat 1. The top structure of the lifting seat 8 is inserted into the first movable opening opened in the top wall of the hollow seat 1 and is fixedly connected to the bottom wall of the punch 5 to assist the punch 5 in lifting and lowering. A valve port communicating with the cavity inside the hollow seat 1 is installed on the side wall of the hollow seat 1 to facilitate the injection or discharge of hydraulic oil into the hollow seat 1.
[0024] Furthermore, a pressing assembly 7 is installed on the outer surface wall of the die 4. The pressing assembly 7 includes an extension plate 71, a push rod 72, a piston rod 73, and a sealing sleeve plate 74. The opposing walls of the two extension plates 71 are fixedly connected to the outer walls of both sides of the die 4, which facilitates the lifting and lowering of the die 4. The top ends of the multiple push rods 72 and the multiple piston rods 73 are fixedly connected to the bottom walls of the two extension plates 71, respectively. The bottom ends of the multiple piston rods 73 penetrate the second movable opening on the top wall of the hollow seat 1 and are inserted into the cavity opened in the hollow seat 1. Due to the cooperation between the second movable opening and the piston rod 73, it is convenient to guide the die 4 in the lifting and lowering state, so that the die 4 can be lifted and lowered vertically.
[0025] The isolation box 10 has openings at both the top and bottom. The opening size at the top of the isolation box 10 is larger than that at the bottom. The piston plate 9 is located inside the isolation box 10 and inside the bottom opening. The top wall of the piston plate 9 is fixedly connected to the bottom structure of the lifting seat 8. The size of the piston plate 9 is also larger than the bottom opening size of the isolation box 10. This is to support the punch 5 after reset and to facilitate the discharge of hydraulic oil entering the isolation box 10. The size of the piston plate 9 is also larger than the first movable opening at the top of the hollow seat 1 to prevent the punch 5 from detaching from the hollow seat 1 during the rising process, which would affect subsequent use. The sealing sleeve 74 is located in the cavity opened in the hollow seat 1 and is sleeved on the outer surface wall of the isolation box 10. Its top wall is fixedly connected to the bottom end of the piston rod 73. This allows the die 4 to use the piston rod 73 to push the sealing sleeve 74 to squeeze the hydraulic oil during the descent, which facilitates the upward movement of the punch 5 and achieves double-sided stamping of the brake pads.
[0026] In this embodiment, when the heated brake pad semi-finished product needs to be processed, the hydraulic cylinder 3 is activated to push the die 4 to lower the extension plate 71. Under the downward action of the die 4, the piston rod 73 pushes the sealing sleeve 74 to squeeze the hydraulic oil in the hollow seat 1. The hydraulic oil is squeezed by the sealing sleeve 74 and applies pressure to the piston plate 9, thereby cooperating with the lifting seat 8 to push the punch 5 to rise. The raised punch 5, together with the lowered die 4, achieves the purpose of double-sided stamping of the heated brake pad semi-finished product, so that it maintains uniform force on both sides during the stamping process, reducing the problem of uneven force caused by single-sided stamping, which affects the quality of the finished brake pad. When the die 4 rises and resets, the sealing sleeve 74, together with the piston rod 73 and the extension plate 71, rises and releases the pressure on the hydraulic oil, allowing the hydraulic oil to flow out from the isolation box 10, so that the punch 5 naturally falls and achieves the purpose of automatic reset, which facilitates the subsequent stamping operation.
[0027] Example 2
[0028] like Figures 1 to 5As shown, the present invention proposes a bidirectional hydraulic press for brake pads. Compared with Embodiment 1, this embodiment further includes a hollow seat 1, a concave mold 4, a pressing assembly 7, and a punch 5. A support assembly 6 is mounted on the punch 5. The support assembly 6 includes a first frame 61, a first anti-detachment rod 62, a first spring 63, a sleeve 64, a second frame 65, a first movable plate 66, a second movable plate 67, a second anti-detachment rod 68, and a second spring 69. The first frame 61 is sleeved on the outer surface wall of the punch 5 and is located at the top of the hollow seat 1 to facilitate lifting and lowering with the punch 5. A first anti-detachment rod 68 is also provided at the top of the hollow seat 1. The movable opening serves a protective function; the bottom ends of multiple first anti-detachment rods 62 are fixedly connected to the top wall of the first frame 61, and the bottom ends of multiple first springs 63 are connected to the anti-detachment end of the first anti-detachment rod 62. The first anti-detachment rod 62 is T-shaped, and the sleeve 64 is sleeved on the anti-detachment end of the first spring 63 and the first anti-detachment rod 62. The size of the anti-detachment end of the first anti-detachment rod 62 is larger than the size of the bottom opening of the sleeve 64 to prevent the sleeve 64 from detaching from the first anti-detachment rod 62 during the upward movement, thus affecting the reset. The top end of the first spring 63 set inside the sleeve 64 is connected to the top wall of the inner wall of the sleeve 64 to facilitate the reset of the sleeve 64.
[0029] The bottom wall of the second frame 65 is fixedly connected to the top of multiple sleeves 64, which facilitates the telescopic movement of the second frame 65 with the assistance of the sleeves 64. The middle structural dimension of the second frame 65 is larger than the dimension of the punch 5 to prevent interference with the mold closing of the punch 5 and the die 4. Two first movable plates 66 are symmetrically arranged on the two side walls of the second frame 65. Multiple second anti-detachment rods 68 are also arranged in a T-shape. The ends of the multiple second anti-detachment rods 68 are connected to the side walls of the corresponding first movable plates 66. The anti-detachment ends of the multiple second anti-detachment rods 68 are set in the movable cavities opened inside the second frame 65, and the diameter of the anti-detachment ends of the second anti-detachment rods 68 is larger than the diameter of the opening of the movable cavity to prevent the first movable plates 66 from detaching from the second frame 65 during movement and affecting the mold closing. For subsequent use; multiple second springs 69 are respectively installed in the corresponding movable cavities, and the two ends of the multiple second springs 69 are respectively connected to the wall of the corresponding movable cavity and the anti-detachment end of the second anti-detachment rod 68 to assist the movement of the first movable plate 66; symmetrical sliding openings are provided on both sides of the second frame 65, and the opposite walls of the two second movable plates 67 pass through the corresponding sliding openings and are fixedly connected to the opposite walls of the two first movable plates 66. The sliding openings guide the movement of the second movable plates 67. At the same time, the size of the first movable plate 66 is larger than the size of the sliding opening to prevent affecting the reset and reuse of the second movable plate 67; the opposite walls of the two second movable plates 67 are set in a smooth arc shape to avoid scratching the protruding structure of the punch 5.
[0030] In this embodiment, the second frame 65 allows the heated brake pad semi-finished product to be placed on it for support. When the die 4 and the punch 5 are closed, the second frame 65 can be lowered by the push of the ejector rod 72, in cooperation with the sleeve 64 and the first anti-disengagement rod 62, to prevent the second frame 65 from affecting the stamping process of the brake pad semi-finished product. Due to the descent of the second frame 65, the second movable plate 67 moves downward under the action of the second frame 65, and protrudes from the punch 5 through the arc surface of the second movable plate 67. The contact structure moves outward toward the second frame 65, releasing the support for the brake pad semi-finished product without affecting the die 4 and punch 5's closing and stamping. When the processing is completed and the mold is reset, the sleeve 64, under the elastic release of the first spring 63, pushes the second frame 65 to rise and reset, and causes the first movable plate 66, under the contraction state of the second spring 69, to pull the second movable plate 67 to reset, achieving the purpose of supporting the molded brake pad. During the descent, it follows the punch 5 to complete automatic demolding, reducing the difficulty of material removal and providing convenience for demolding operations.
[0031] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A bidirectional hydraulic press for brake pads, comprising a hollow seat (1), wherein a punch (5) and a bracket (2) are arranged on the top wall of the hollow seat (1), a hydraulic cylinder (3) is mounted on the top wall of the bracket (2), and a die (4) is connected to the output end of the hydraulic cylinder (3), characterized in that: The hollow seat (1) has a cavity, and an isolation box (10) is installed on the top wall of the inner wall of the cavity. The isolation box (10) is provided with a piston plate (9) and a lifting seat (8). A support assembly (6) is sleeved on the outer surface wall of the punch (5). The support assembly (6) includes a second frame (65). At the bottom of the second frame (65), a sleeve (64), a first spring (63), a first anti-disengagement rod (62), and a first frame (61) are installed. The second frame (65) has symmetrically arranged second springs (64) on both sides of the second frame (65). A movable plate (66) is provided. A second movable plate (67) and a second anti-detachment rod (68) are connected to the opposite wall of the two first movable plates (66). A second spring (69) is connected to the anti-detachment end of the two second anti-detachment rods (68). A pressing assembly (7) is installed on the die (4). The pressing assembly (7) includes an extension plate (71). A top rod (72) and a piston rod (73) are connected to the bottom wall of the two extension plates (71). A sealing sleeve plate (74) is connected to the bottom end of the plurality of piston rods (73).
2. The bidirectional hydraulic press for brake pads according to claim 1, characterized in that, The top wall of the hollow seat (1) is provided with a first movable opening and a second movable opening. The top structure of the lifting seat (8) is set in the first movable opening and connected to the bottom wall of the punch (5).
3. A bidirectional hydraulic press for brake pads according to claim 1, characterized in that, The piston plate (9) is arranged inside the bottom opening of the isolation box (10), and the size of the piston plate (9) is larger than the size of the bottom opening of the isolation box (10).
4. A bidirectional hydraulic press for brake pads according to claim 1, characterized in that, The first frame (61) is sleeved on the outer surface wall of the punch (5), the bottom ends of the plurality of first anti-detachment rods (62) are connected to the top wall of the first frame (61), and the plurality of sleeves (64) are respectively sleeved on the anti-detachment ends of the first anti-detachment rods (62) at the corresponding positions.
5. A bidirectional hydraulic press for brake pads according to claim 1, characterized in that, Multiple first springs (63) are disposed in sleeves (64) at corresponding positions, and the two ends of the multiple first springs (63) are respectively connected to the top of the inner wall of the sleeve (64) and the anti-detachment end of the first anti-detachment rod (62).
6. A bidirectional hydraulic press for brake pads according to claim 1, characterized in that, The second frame (65) has symmetrically arranged movable cavities. The anti-detachment ends of multiple second anti-detachment rods (68) are respectively set into the movable cavities corresponding to their positions. Multiple second springs (69) are respectively set in the movable cavities corresponding to their positions. The two ends of the second springs (69) are respectively connected to the movable cavity wall and the anti-detachment ends of the second anti-detachment rods (68).
7. A bidirectional hydraulic press for brake pads according to claim 2, characterized in that, The sealing sleeve (74) is disposed in the cavity and is also sleeved on the outer surface wall of the isolation box (10). The bottom ends of the plurality of piston rods (73) are respectively connected to the top wall of the sealing sleeve (74) after passing through the second movable hole.