Closed-die forging wheel end cap mold

Abstract

This utility model discloses a closed forging wheel end cap mold, relating to the field of hot forging production technology. It includes a processing base, a connecting plate at the top of which is mounted, and a lower mold body at the top of the connecting plate. The lower mold body has a mold cavity inside, and a protrusion is located at the top of the lower mold body outside the mold cavity. A mounting bracket is fixedly connected to the top of the processing base, and a hydraulic cylinder is located at the top of the mounting bracket. The upper mold body of this device has a groove that matches the protrusion. When the mold is closed, the protrusion and groove fit tightly together, forming a closed forging space. This closed space strictly confines the billet within the mold cavity. During forging, due to the constraint of the closed space, the billet cannot overflow and form flash as in an open mold. The billet is precisely shaped according to the mold cavity, thus avoiding the trimming process that must be performed after traditional open forging, saving the equipment, manpower, and time costs required for trimming.

Description

Technical Field

[0001] This utility model relates to the field of hot die forging production technology, specifically a closed forging wheel end cap mold. Background Technology

[0002] Currently, wheel end caps are mostly produced using a pre-opening mold forming method. During production, the metal billet is first heated to the forging temperature according to the design dimensions of the wheel end cap to give it good plasticity. Then, the hot billet is placed into the lower mold cavity of the open mold. The upper mold moves downward under the drive of the forging equipment, applying pressure to the billet and forcing it to flow in the space between the upper and lower molds and initially form the shape.

[0003] When forming with an open die, the metal billet tends to overflow out of the die under forging pressure, forming excess flash. Traditional open forging dies mostly require an additional trimming process, which not only increases the production process and cost but also easily leads to dimensional deviations in the forgings due to trimming. Furthermore, the connection between some lower dies and the base is often simple placement or bolt fixing, resulting in low clamping efficiency and a tendency to loosen due to vibration after long-term use. Therefore, those skilled in the art have provided a closed forging wheel end cap die to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a closed-type forged wheel end cap mold to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A closed forging wheel end cap mold includes a processing base, a snap-fit ​​structure, and an auxiliary positioning structure. The processing base has a connecting plate at its top, and a lower mold body at its top. The lower mold body has a mold cavity inside, and a protrusion is located at the top of the lower mold body outside the mold cavity. A mounting bracket is fixedly connected to the top of the processing base, and a hydraulic cylinder is located at the top of the mounting bracket. The output end of the hydraulic cylinder passes through the mounting bracket and is fixedly connected to the connecting plate. An upper mold body is detachably connected to the bottom of the connecting plate. A protruding block is located on the upper mold body, and a protruding head is located at the bottom of the protruding block. A groove matching the concave block is located at the bottom of the upper mold body outside the protruding block. The processing base has a snap-fit ​​structure inside, and auxiliary positioning structures are located at the top of the processing base on both sides of the lower mold body.

[0006] As a further embodiment of this utility model, it includes a processing base, a snap-fit ​​structure, and an auxiliary positioning structure. The processing base has a mounting block at its top, and a lower mold body at its top. The lower mold body has a mold cavity inside, and a protrusion at its top and outside the mold cavity. A mounting frame is fixedly connected to the top of the processing base, and the mounting frame is inverted U-shape. A hydraulic cylinder is located at the top of the mounting frame, and the output end of the hydraulic cylinder is fixedly connected to a connecting plate through the mounting frame. An upper mold body is detachably connected to the bottom of the connecting plate. A protruding block is provided on the upper mold body, and a protruding head is provided at the bottom of the protruding block. A groove matching the protrusion is provided at the bottom of the upper mold body and outside the protruding block. A snap-fit ​​structure is provided inside the processing base, and auxiliary positioning structures are provided on both sides of the lower mold body at the top of the processing base.

[0007] As a further embodiment of this utility model: the snap-fit ​​structure includes an auxiliary rod, a positive and negative lead screw, a threaded sleeve, and a sliding groove. The auxiliary rod is fixedly connected inside the processing base, and the positive and negative lead screw is rotatably connected inside the processing base. One end of the positive and negative lead screw passes through the processing base and is fixedly connected to a turntable. Two threaded sleeves are threadedly connected to the positive and negative lead screw.

[0008] As a further improvement of this utility model: the top of the processing base has two sliding grooves that are adapted to the threaded sleeve, and the two sliding grooves are fixedly connected to a snap-fit ​​block at one end close to each other, and the front and rear ends of the mounting block are provided with snap-fit ​​grooves that are adapted to the snap-fit ​​block.

[0009] As a further embodiment of this utility model: the auxiliary positioning structure includes a fixed block, a guide rod, a slider, a spring, a first movable block, a linkage rod, a telescopic rod, a second movable block, and a clamping block. The top of the processing base and both sides of the lower mold body are fixedly connected to fixed blocks, and the top of the fixed blocks are fixedly connected to guide rods. Both guide rods are slidably connected to the connecting plate, and sliders are slidably connected to the guide rods.

[0010] As a further embodiment of this utility model: a spring is provided on the guide rod and located between the slider and the fixed block; a first movable block is fixedly connected to the bottom end of the slider; a linkage rod is rotatably connected to the first movable block; and a telescopic rod is fixedly connected to the end of the fixed block near the lower mold body.

[0011] As a further embodiment of this utility model: one end of the telescopic rod is fixedly connected to a clamping block, and the end of the clamping block away from the lower mold body is fixedly connected to a second movable block, and the end of the linkage rod away from the first movable block is connected to the second movable block.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The upper die body of this device has a groove that matches the protrusion. When the die is closed, the protrusion and the groove fit tightly together to form a closed forging space. This closed space can strictly confine the billet within the die cavity. During the forging process, due to the constraint of the closed space, the billet cannot overflow to the outside and form flash as it would in an open die. The billet will be precisely shaped according to the shape of the die cavity, thus avoiding the trimming process that must be performed after traditional open forging, saving the equipment, manpower and time costs required for trimming. This device uses a snap-fit ​​structure to install the lower mold body. By rotating the turntable, the positive and negative lead screws rotate, which in turn causes the two threaded sleeves to move closer together. This allows the snap-fit ​​block to be precisely snapped into the snap-fit ​​groove, thus achieving a firm fixation of the mounting block and the lower mold body. When it is necessary to replace the lower mold body, simply rotate the turntable in the opposite direction to disengage the snap-fit ​​block from the snap-fit ​​groove, which allows for easy disassembly and replacement of the lower mold body. The operation is simple and convenient. This device uses an auxiliary positioning structure to clamp the lower die body. When the hydraulic cylinder drives the connecting plate to descend, it squeezes the slider. After being squeezed, the slider compresses the spring, and the elastic deformation of the spring absorbs part of the impact force, reducing rigid damage to the components. With the help of the first movable block, the linkage rod and the second movable block, as the slider moves downward, the two clamping blocks move towards the middle to clamp and position the lower die body. This clamping action can firmly fix the position of the lower die body, preventing it from shifting or shaking due to pressure during forging, and ensuring the positional accuracy of the die during forging. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a closed forging wheel end cap mold.

[0014] Figure 2 This is a schematic diagram of the structure of the lower die body in a closed forging wheel end cap mold.

[0015] Figure 3 This is a schematic diagram of the upper mold body in a closed forging wheel end cap mold.

[0016] Figure 4 This is a schematic diagram of the structure of the lower mold body and the upper mold body in a closed forging wheel end cap mold.

[0017] Figure 5 This is a side sectional view of the base being machined in a closed forged wheel end cap mold.

[0018] Figure 6 This is an enlarged view of A in a closed forging wheel end cap mold.

[0019] In the diagram: 1. Machining base; 2. Auxiliary rod; 3. Positive and negative lead screws; 4. Turntable; 5. Threaded sleeve; 6. Slide groove; 7. Snap-fit ​​block; 8. Mounting block; 9. Snap-fit ​​groove; 10. Lower mold body; 11. Mold cavity; 12. Protrusion; 13. Mounting bracket; 14. Hydraulic cylinder; 15. Connecting plate; 16. Upper mold body; 17. Protruding block; 18. Protruding head; 19. Groove; 20. Fixing block; 21. Guide rod; 22. Slider; 23. Spring; 24. First movable block; 25. Linkage rod; 26. Telescopic rod; 27. Second movable block; 28. Clamping block. Detailed Implementation

[0020] 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.

[0021] Example 1: Refer to Figure 1-5 This embodiment provides a closed forging wheel end cap mold, including a processing base 1, a snap-fit ​​structure, and an auxiliary positioning structure. The processing base 1 has a mounting block 8 at its top, and a lower mold body 10 at the top of the mounting block 8. The lower mold body 10 has a mold cavity 11 inside, and a protrusion 12 is located at the top of the lower mold body 10 and outside the mold cavity 11. A mounting frame 13 is fixedly connected to the top of the processing base 1, and the mounting frame 13 is inverted U-shaped. A hydraulic cylinder 14 is located at the top of the mounting frame 13, and the output end of the hydraulic cylinder 14 is fixedly connected to a connecting plate 15 through the mounting frame 13. An upper mold body 16 is detachably connected to the bottom of the connecting plate 15. A protruding block 17 is located on the upper mold body 16, and a protruding head 18 is located at the bottom of the protruding block 17. A groove 19, matching the protrusion 12, is located at the bottom of the upper mold body 16 and outside the protruding block 17. The processing base 1 has a snap-fit ​​structure inside, and auxiliary positioning structures are located at the top of the processing base 1 and on both sides of the lower mold body 10.

[0022] In this embodiment, the top of the processing base 1 provides a platform for the mounting block 8. The lower mold body 10 is mounted on the mounting block 8. The mold cavity 11 inside the lower mold body 10 is the core area for forming the wheel end cap blank. On the outside of the mold cavity 11, the top of the lower mold body 10 is provided with a protrusion 12. During the forging process, the protrusion 12 cooperates with the groove 19 of the upper mold body 16, playing a key role in constraining and guiding the forming of the blank. The protruding block 17 and the protruding head 18 at the bottom of the upper mold body 16 apply direct pressure to the blank during the forging process, causing the blank to undergo plastic deformation within the mold cavity 11. The upper die body 16 has a groove 19 at the bottom of the upper die body 16 and outside the protrusion 17 that matches the protrusion 12. When the die is closed, the protrusion 12 and the groove 19 fit tightly together to form a closed forging space. This closed space can strictly confine the blank within the die cavity 11. During the forging process, due to the constraint of the closed space, the blank cannot overflow to the outside and form flash as in an open die. The blank will be precisely formed according to the shape of the die cavity 11, thus avoiding the trimming process that must be carried out after traditional open forging, saving the equipment, manpower and time costs required for trimming.

[0023] Example 2: Refer to Figure 1-6 This embodiment is based on the previous embodiment, but differs from the previous embodiment in that the snap-fit ​​structure includes an auxiliary rod 2, a positive and negative lead screw 3, a threaded sleeve 5, and a sliding groove 6. The auxiliary rod 2 is fixedly connected inside the processing base 1, and the positive and negative lead screw 3 is rotatably connected inside the processing base 1. One end of the positive and negative lead screw 3 passes through the processing base 1 and is fixedly connected to a turntable 4. Two threaded sleeves 5 are threadedly connected to the positive and negative lead screw 3. Two sliding grooves 6 that are adapted to the threaded sleeves 5 are opened at the top of the processing base 1, and snap-fit ​​blocks 7 are fixedly connected to one end of each sliding groove 6 that is close to each other. Snap-fit ​​grooves 9 that are adapted to the snap-fit ​​blocks 7 are opened at both the front and rear ends of the mounting block 8.

[0024] In use, the operator rotates the turntable 4 to drive the positive and negative lead screws 3 to rotate. The positive and negative lead screws 3 are threadedly connected to two threaded sleeves 5. When the positive and negative lead screws 3 rotate, due to the characteristics of their positive and negative threads, the two threaded sleeves 5 will move towards or away from each other along the direction of the auxiliary rod 2. The top of the processing base 1 has two sliding grooves 6 that are adapted to the threaded sleeves 5. The design of the sliding grooves 6 provides a track for the movement of the threaded sleeves 5. A snap-fit ​​block 7 is fixedly connected to one end of each sliding groove 6. The front and rear ends of the mounting block 8 have snap-fit ​​grooves 9 that are adapted to the snap-fit ​​blocks 7. When the threaded sleeves 5 move to a certain position under the drive of the positive and negative lead screws 3, the snap-fit ​​blocks 7 can accurately snap into the snap-fit ​​grooves 9, thereby achieving a firm fixation of the mounting block 8 and the lower mold body 10. When it is necessary to replace the lower mold body 10, simply rotate the turntable 4 in the opposite direction to disengage the snap-fit ​​blocks 7 from the snap-fit ​​grooves 9, and the lower mold body 10 can be easily disassembled and replaced. The operation is simple and convenient.

[0025] Example 3: Reference Figure 1-6 This embodiment is based on the previous embodiment, but differs from the previous embodiment in that the auxiliary positioning structure includes a fixed block 20, a guide rod 21, a slider 22, a spring 23, a first movable block 24, a linkage rod 25, a telescopic rod 26, a second movable block 27, and a clamping block 28. The top of the processing base 1 and both sides of the lower mold body 10 are fixedly connected to the fixed block 20, and the top of the fixed block 20 is fixedly connected to the guide rod 21. Both guide rods 21 are slidably connected to the connecting plate 15, and the slider 22 is slidably connected to the guide rod 21.

[0026] A spring 23 is provided on the guide rod 21 and located between the slider 22 and the fixed block 20. A first movable block 24 is fixedly connected to the bottom end of the slider 22. A linkage rod 25 is rotatably connected to the first movable block 24. A telescopic rod 26 is fixedly connected to the end of the fixed block 20 near the lower mold body 10. A clamping block 28 is fixedly connected to one end of the telescopic rod 26. A second movable block 27 is fixedly connected to the end of the clamping block 28 away from the lower mold body 10. The end of the linkage rod 25 away from the first movable block 24 is connected to the second movable block 27.

[0027] In this embodiment, the top of the fixed block 20 is fixedly connected to the guide rod 21. The guide rod 21 not only guides the connecting plate 15, ensuring its stability during vertical movement, but also provides a track for the sliding block 22. The sliding block 22 can slide freely on the guide rod 21. A spring 23 is installed on the guide rod 21 between the sliding block 22 and the fixed block 20. When the hydraulic cylinder 14 drives the connecting plate 15 to descend, the connecting plate 15 slides along the guide rod 21 and presses the sliding block 22. After being pressed, the sliding block 22 compresses the spring 23. The spring 23 plays a role in buffering and restoring throughout the process. When the sliding block 22 is pressed, the elastic deformation of the spring 23 can absorb part of the impact force, reducing rigid damage to various components. At the same time, the first movable block 24 fixedly connected to its bottom end drives the linkage rod 25 to rotate. A telescopic rod 26 is fixedly connected to one end of the fixed block 20 near the lower die body 10. A clamping block 28 is fixedly connected to one end of the telescopic rod 26. A second movable block 27 is fixedly connected to the end of the clamping block 28 away from the lower die body 10. The end of the linkage rod 25 away from the first movable block 24 is connected to the second movable block 27. When the linkage rod 25 rotates, it pushes the second movable block 27, thereby extending the telescopic rod 26 and causing the clamping block 28 to move towards the center, clamping and positioning the lower die body 10. This clamping action can firmly fix the position of the lower die body 10, preventing it from shifting or shaking due to pressure during forging, and ensuring the accuracy of the die position during forging. After forging is completed, the hydraulic cylinder 14 drives the upper die to rise, the spring 23 resets and pushes the slider 22 to rise, and the clamping block 28 is released, completing the positioning and releasing action in a complete forging cycle.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A closed-type forged wheel end cap mold, comprising a machining base (1), a snap-fit ​​structure, and an auxiliary positioning structure, characterized in that, The processing base (1) has a mounting block (8) at its top, and a lower mold body (10) is provided at the top of the mounting block (8). A mold cavity (11) is opened inside the lower mold body (10). A protrusion (12) is provided at the top of the lower mold body (10) and outside the mold cavity (11). A mounting frame (13) is fixedly connected to the top of the processing base (1). The mounting frame (13) is inverted U-shaped. A hydraulic cylinder (14) is provided at the top of the mounting frame (13). The output end of the hydraulic cylinder (14) passes through the mounting frame (13) and is fixedly connected to the top of the processing base (1). A connecting plate (15) is fixedly connected, and the bottom end of the connecting plate (15) is detachably connected to the upper mold body (16). The upper mold body (16) is provided with a protruding block (17), and the bottom end of the protruding block (17) is provided with a protruding head (18). The bottom end of the upper mold body (16) and the outside of the protruding block (17) are provided with a groove (19) that matches the protrusion (12). The processing base (1) is provided with a snap-fit ​​structure inside, and the top of the processing base (1) and both sides of the lower mold body (10) are provided with auxiliary positioning structures.

2. The closed forging wheel end cap mold according to claim 1, characterized in that, The snap-fit ​​structure includes an auxiliary rod (2), a positive and negative lead screw (3), a threaded sleeve (5), and a slide groove (6). The auxiliary rod (2) is fixedly connected inside the processing base (1), and the positive and negative lead screw (3) is rotatably connected inside the processing base (1). One end of the positive and negative lead screw (3) passes through the processing base (1) and is fixedly connected to a turntable (4). Two threaded sleeves (5) are threadedly connected to the positive and negative lead screw (3).

3. The closed-type forged wheel end cap mold according to claim 1, characterized in that, The processing base (1) has two sliding grooves (6) at the top that are compatible with the threaded sleeve (5), and the two sliding grooves (6) are fixedly connected to a snap-fit ​​block (7) at one end close to each other. The mounting block (8) has snap-fit ​​grooves (9) at both the front and rear ends that are compatible with the snap-fit ​​block (7).

4. A closed forging wheel end cap mold according to claim 1, characterized in that, The auxiliary positioning structure includes a fixed block (20), a guide rod (21), a slider (22), a spring (23), a first movable block (24), a linkage rod (25), a telescopic rod (26), a second movable block (27), and a clamping block (28). The processing base (1) is fixedly connected to the top of the base and to both sides of the lower mold body (10). The top of the fixed block (20) is fixedly connected to the guide rod (21). Both guide rods (21) are slidably connected to the connecting plate (15). A slider (22) is slidably connected to the guide rod (21).

5. A closed forging wheel end cap mold according to claim 4, characterized in that, A spring (23) is provided on the guide rod (21) and between the slider (22) and the fixed block (20). A first movable block (24) is fixedly connected to the bottom end of the slider (22). A linkage rod (25) is rotatably connected to the first movable block (24). A telescopic rod (26) is fixedly connected to one end of the fixed block (20) near the lower mold body (10).

6. A closed forging wheel end cap mold according to claim 5, characterized in that, One end of the telescopic rod (26) is fixedly connected to a clamping block (28), and the end of the clamping block (28) away from the lower mold body (10) is fixedly connected to a second movable block (27). The end of the linkage rod (25) away from the first movable block (24) is connected to the second movable block (27).

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