A machining die for brake rocker shaft

Abstract

The utility model discloses a kind of processing mould of brake rocker shaft effect, it is related to brake rocker shaft processing mould technical field, including bottom plate and rack bar b, the top of bottom plate is fixedly connected with roof rack, the top of roof rack is fixedly installed with hydraulic ram, the bottom of hydraulic ram is fixedly connected with upper die, the bottom of upper die is provided with lower die, the bottom of lower die is fixedly connected with bottom plate, the inside of lower die is provided with linkage ejection mechanism.The brake rocker shaft processing mould is through upper die linkage rack gear structure, automatically ejects workpiece after processing, without tool auxiliary or additional drive, solve traditional demoulding cumbersome problem, adjust through the spacing of bevel gear and bidirectional screw rod drive positioning pin, can adapt to the workpiece of different hole position, positioning accurate and avoid with upper die interference, overall simplify operation process, improve processing efficiency and adaptability, guarantee brake rocker shaft forming quality.

Description

Technical Field

[0001] This utility model relates to the field of brake rocker arm shaft processing mold technology, specifically a processing mold for manufacturing brake rocker arm shafts. Background Technology

[0002] The brake rocker arm is a key component of the motorcycle braking system. The existing brake rocker arm has a bending process in its production process, which requires bending the flat strip workpiece on both sides. During bending, the flat strip workpiece is fed into the processing mold and then stamped.

[0003] For example, the utility model disclosed in announcement number CN220461936U discloses a brake rocker arm bending die, which uses two center holes of the brake rocker arm to be processed to be positioned with two positioning pins respectively, and then uses a magnetic component to hold the brake rocker arm to be processed and make it tightly attached to the first high flat section, so that it will not move or move up and down at will. The brake rocker arm to be processed is horizontally supported and precisely positioned, which can realize the quick placement of the brake rocker arm to be processed into the lower fixed mold for accurate positioning and magnetic attraction and fixation. It can prevent problems such as inaccurate positioning and warping during mold closing and processing, which can cause movement and dimensional deviation. It has the advantages of simple operation, quick positioning and fixing of workpiece, saving auxiliary time, and ensuring positioning accuracy.

[0004] In the above-mentioned brake rocker arm bending die, the workpiece is positioned by two sets of locating pins on the top of the lower die. Then, the upper die is driven to move down by a hydraulic rod to form the workpiece. However, since the workpiece will stick to the top of the lower die after processing, it is difficult for the operator to remove it by hand, so tools are required, making the operation cumbersome. Some dies use an external drive mechanism to drive the internal ejection mechanism to eject the workpiece from the top during demolding. However, this method requires a separate drive component and manual operation by the operator, resulting in poor synchronization. Utility Model Content

[0005] The purpose of this utility model is to provide a processing mold for manufacturing brake rocker arm shafts, in order to solve the problem mentioned in the background art that when the existing brake rocker arm bending mold is used, the workpiece is positioned by two sets of positioning pins on the top of the lower mold, and then the upper mold is driven to move down by a hydraulic rod to form the workpiece. However, since the workpiece will stick to the top of the lower mold after processing, it is difficult for the operator to remove it by hand, so tools are required, and the operation is relatively cumbersome. Some molds will drive the internal ejection mechanism to move through an external drive mechanism to eject the workpiece on the top when demolding. However, this method requires a separate drive component and manual operation by the operator, resulting in poor synchronization.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a processing mold for manufacturing a brake rocker arm shaft, comprising a base plate and a rack rod b, a top frame fixedly connected to the top of the base plate, and a hydraulic rod fixedly installed on the top of the top frame; an upper mold fixedly connected to the bottom of the hydraulic rod, a lower mold provided at the bottom of the upper mold, the bottom of the lower mold fixedly connected to the base plate, a linkage ejection mechanism provided inside the lower mold, the linkage ejection mechanism comprising a rack rod a slidably connected inside the lower mold, a top plate fixedly connected to the top of the rack rod a, a prying mechanism provided on both sides of the lower mold; and a positioning adjustment mechanism provided in the middle of the lower mold.

[0007] Furthermore, the actuating mechanism includes a bracket fixedly connected to the bottom of the top frame, and a lever is rotatably connected to the bottom of the bracket via a rotating shaft.

[0008] Furthermore, the top of the lever is arc-shaped, and the bottom of the lever is rotatably connected to a roller via a rotating shaft. A push plate is provided on the side of the roller near the lower mold, and the two sides of the upper mold are rotatably connected to actuating wheels via rotating shafts.

[0009] Furthermore, a gear shaft is meshed with one side of the rack rod a, and a rack rod b is meshed with the outer side of the gear shaft. The two ends of the gear shaft are rotatably connected to the lower mold through a rotating shaft. The outer side of the rack rod b is slidably connected to the lower mold, and one end of the rack rod b is fixed to the push plate.

[0010] Furthermore, the positioning adjustment mechanism includes a handle rotatably connected to one side of the lower mold via a bearing, one end of the handle is fixedly connected to a bevel gear a, the outer side of the bevel gear a is meshed with a bevel gear b, and the inner side of the bevel gear b is fixedly connected to a bidirectional threaded rod.

[0011] Furthermore, both ends of the bidirectional threaded rod are rotatably connected to the lower mold via bearings, and two sets of moving blocks are threadedly connected to the outer side of the bidirectional threaded rod.

[0012] Furthermore, the two sides of the movable block abut against the inner side of the lower mold, and the top of the movable block is threaded with a positioning pin.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the brake rocker arm shaft processing mold uses a rack and pinion structure linked to the upper mold to automatically eject the workpiece after processing, without the need for tool assistance or additional drive, solving the problem of cumbersome demolding in the traditional method. The spacing of the positioning pin is adjusted by the bevel gear and the bidirectional threaded rod, which can adapt to workpieces with different hole positions. The positioning is accurate and avoids interference with the upper mold. The overall operation process is simplified, the processing efficiency and adaptability are improved, and the forming quality of the brake rocker arm shaft is guaranteed.

[0014] 1. After processing, when the hydraulic rod moves the upper mold to its highest point, the two side actuating wheels contact the arc-shaped top of the lever, driving the lever to rotate. The bottom roller pushes the push plate to move horizontally, and the push plate drives the rack rod b to move. Through meshing with the gear shaft, the rack rod a moves upward synchronously, and then the top plate lifts the formed workpiece on the lower mold, creating a gap between the workpiece and the mold. This structure does not require additional driving components or tools and is synchronized with the upper mold reset action, avoiding the problems of cumbersome and inefficient traditional demolding. It is convenient to operate and does not damage the workpiece, improving the continuity of processing.

[0015] 2. Positioning is achieved by connecting the workpiece to the locating pin through the central through hole. When the workpiece hole position changes, rotating the handle drives bevel gear a and bevel gear b to mesh, which in turn drives the bidirectional threaded rod to rotate, causing the two sets of moving blocks to move relative to or in opposite directions. The spacing between the locating pins can be flexibly adjusted. The length of the rectangular groove reserved at the bottom of the upper mold is greater than the maximum spacing between the locating pins, effectively avoiding interference with the locating pins when the mold is closed. This structure can adapt to a variety of workpieces without changing the mold, and the positioning is accurate and easy to adjust. It solves the problems of poor adaptability and easy positioning deviation of traditional molds, and ensures the forming accuracy of the brake rocker arm shaft. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the lower mold of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram at point A; Figure 4 This is a three-dimensional structural diagram of the gear shaft of this utility model; Figure 5 This is a three-dimensional structural diagram of the handle of this utility model; Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the movable block of this utility model.

[0017] In the diagram: 1. Base plate; 2. Top frame; 3. Hydraulic rod; 4. Upper mold; 5. Lower mold; 6. Rack rod a; 7. Top plate; 8. Gear shaft; 9. Rack rod b; 10. Bracket; 11. Lever; 12. Push plate; 13. Actuating wheel; 14. Handle; 15. Bevel gear a; 16. Bevel gear b; 17. Double-ended threaded rod; 18. Moving block; 19. Positioning pin. Detailed Implementation

[0018] 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.

[0019] Example 1: Please refer to Figures 1-2 This utility model provides the following technical solution: a processing mold for manufacturing a brake rocker arm shaft, including a base plate 1 and a rack rod b9. A top frame 2 is fixedly connected to the top of the base plate 1, and a hydraulic rod 3 is fixedly installed on the top of the top frame 2. An upper mold 4 is fixedly connected to the bottom of the hydraulic rod 3, and a lower mold 5 is provided at the bottom of the upper mold 4. The bottom of the lower mold 5 is fixedly connected to the base plate 1. A linkage ejection mechanism is provided inside the lower mold 5. The linkage ejection mechanism includes a rack rod a6 slidably connected inside the lower mold 5, a top plate 7 fixedly connected to the top of the rack rod a6, and a toggle mechanism on both sides of the lower mold 5. When processing the brake rocker arm shaft, the processing mold for manufacturing the brake rocker arm shaft works by placing the workpiece on the top of the lower mold 5, and then activating the hydraulic rod 3 to move the upper mold 4 downward. When the upper mold 4 contacts the workpiece, it will squeeze it, causing its bottom to fit against the lower mold 5, thereby completing the forming process of the workpiece.

[0020] Please see Figures 1-2 The actuating mechanism includes a bracket 10 fixedly connected to the bottom of the top frame 2. The bottom of the bracket 10 is rotatably connected to a lever 11 via a rotating shaft. The top of the lever 11 is arc-shaped, and the bottom of the lever 11 is rotatably connected to a roller via a rotating shaft. A push plate 12 is provided on the side of the roller near the lower mold 5. The two sides of the upper mold 4 are rotatably connected to actuating wheels 13 via rotating shafts. After processing, the hydraulic rod 3 can be activated to drive the upper mold 4 to move upward. When the upper mold 4 moves to the highest point, the actuating wheels 13 on both sides will contact the arc-shaped edge of the top of the lever 11, thereby actuating the lever 11 to rotate.

[0021] Please see Figures 2-4 A gear shaft 8 is meshed with one side of the rack rod a6, and a rack rod b9 is meshed with the outer side of the gear shaft 8. The two ends of the gear shaft 8 are rotatably connected to the lower mold 5 through a rotating shaft. The outer side of the rack rod b9 is slidably connected to the lower mold 5, and one end of the rack rod b9 is fixed to the push plate 12. The roller at the bottom of the lever 11 pushes the push plate 12 to move, and the push plate 12 drives the rack rod b9 on one side to move, thereby meshing with the gear shaft 8, causing the gear shaft 8 to rotate and mesh with the rack rod a6, causing the rack rod a6 to move upward. The rack rod a6 then pushes the workpiece formed on the top of the lower mold 5 upward through the bottom top plate 7, so that a gap is created between the bottom of the workpiece and the top of the lower mold 5, through which the workpiece can be easily removed.

[0022] By performing the above operations, the workpiece formed on the processing mold can be automatically ejected after processing, making it convenient to pick up the workpiece.

[0023] Example 2: Please refer to Figure 1 , Figure 5 and Figure 6 Based on Embodiment 1, a positioning adjustment mechanism for positioning a workpiece is also disclosed, the specific structure of which is as follows: A positioning adjustment mechanism is provided in the middle of the lower mold 5. The positioning adjustment mechanism includes a handle 14 rotatably connected to one side of the lower mold 5 via a bearing. One end of the handle 14 is fixedly connected to a bevel gear a15. A bevel gear b16 is meshed with the outer side of the bevel gear a15. A bidirectional threaded rod 17 is fixedly connected to the inner side of the bevel gear b16. Both ends of the bidirectional threaded rod 17 are rotatably connected to the lower mold 5 via bearings. Two sets of moving blocks 18 are threadedly connected to the outer side of the bidirectional threaded rod 17. The two sides of the moving blocks 18 abut against the inner side of the lower mold 5. A positioning pin 19 is threadedly connected to the top of the moving blocks 18.

[0024] Please see Figure 1 , Figure 5 and Figure 6 The machining mold used for manufacturing the brake rocker arm shaft can align the two sets of through holes in the middle of the workpiece with the positioning pins 19 on the top of the lower mold 5 when positioning the workpiece. This completes the workpiece positioning. When the hole position of the workpiece changes, by rotating the handle 14, the handle 14 will drive the bevel gear a15 to mesh with the bevel gear b16, causing the bevel gear b16 to rotate. The bevel gear b16 will drive the internal bidirectional threaded rod 17 to rotate, causing the bidirectional threaded rod 17 to perform threaded transmission with the moving blocks 18 at both ends, so that the two sets of moving blocks 18 move in opposite directions, changing the distance between the two sets of moving blocks 18 and the positioning pins 19, thereby adapting to the position of the positioning holes in different workpieces. It should be noted that the bottom of the upper mold 4 is provided with a rectangular groove, and the length of the rectangular groove is greater than the maximum distance between the two sets of positioning pins 19, thereby preventing the top of the positioning pins 19 from contacting the upper mold 4 when the upper mold 4 and the lower mold 5 are combined. In this way, the above operation can facilitate the positioning of the workpiece in the machining mold.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing mold for manufacturing a brake rocker arm shaft, comprising a base plate (1) and a rack rod b (9), wherein a top frame (2) is fixedly connected to the top of the base plate (1), and a hydraulic rod (3) is fixedly installed on the top of the top frame (2). Its features are: The bottom of the hydraulic rod (3) is fixedly connected to an upper mold (4), and the bottom of the upper mold (4) is provided with a lower mold (5). The bottom of the lower mold (5) is fixedly connected to the base plate (1). The lower mold (5) is provided with a linkage ejection mechanism inside. The linkage ejection mechanism includes a rack rod a (6) slidably connected inside the lower mold (5). The top of the rack rod a (6) is fixedly connected to a top plate (7). The two sides of the lower mold (5) are provided with a toggle mechanism. The lower mold (5) is provided with a positioning adjustment mechanism in the middle.

2. The machining mold for manufacturing a brake rocker arm shaft according to claim 1, characterized in that: The actuating mechanism includes a bracket (10) fixedly connected to the bottom of the top frame (2), and a lever (11) is rotatably connected to the bottom of the bracket (10) via a rotating shaft.

3. The machining mold for manufacturing a brake rocker arm shaft according to claim 2, characterized in that: The top of the lever (11) is arc-shaped, and the bottom of the lever (11) is rotatably connected to a roller via a rotating shaft. A push plate (12) is provided on the side of the roller near the lower mold (5). The two sides of the upper mold (4) are rotatably connected to a lever wheel (13) via a rotating shaft.

4. The machining mold for manufacturing a brake rocker arm shaft according to claim 1, characterized in that: One side of the rack rod a (6) is meshed with a gear shaft (8), and the outer side of the gear shaft (8) is meshed with a rack rod b (9). The two ends of the gear shaft (8) are rotatably connected to the lower mold (5) through a rotating shaft. The outer side of the rack rod b (9) is slidably connected to the lower mold (5), and one end of the rack rod b (9) is fixed to the push plate (12).

5. The machining mold for manufacturing a brake rocker arm shaft according to claim 1, characterized in that: The positioning adjustment mechanism includes a handle (14) rotatably connected to one side of the lower mold (5) via a bearing. One end of the handle (14) is fixedly connected to a bevel gear a (15). The outer side of the bevel gear a (15) is meshed with a bevel gear b (16). The inner side of the bevel gear b (16) is fixedly connected to a bidirectional threaded rod (17).

6. The machining mold for manufacturing a brake rocker arm shaft according to claim 5, characterized in that: Both ends of the bidirectional threaded rod (17) are rotatably connected to the lower mold (5) via bearings, and two sets of moving blocks (18) are threadedly connected to the outer side of the bidirectional threaded rod (17).

7. The machining mold for manufacturing a brake rocker arm shaft according to claim 6, characterized in that: The two sides of the movable block (18) abut against the inner side of the lower mold (5), and the top of the movable block (18) is threaded with a positioning pin (19).

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