Punching and fixing device for air valve machining

Abstract

A stamping fixing device for air valve machining relates to the technical field of internal combustion engine air valve machining and comprises a press, a supporting device, a dust cover and a lower die body, the supporting device is arranged on a stamping machine, the lower die body and the dust cover are arranged above the supporting device, the upper end of the lower die body penetrates through the dust cover, and the lower die body is arranged below a punch of the stamping machine. A heated valve workpiece is installed on the lower die body, the supporting device is matched with the lower die body to fix the lower end of the workpiece, and the punch is matched with the lower die body to form the workpiece. The mold is high in practicability and very convenient to use, and the demolding assembly, the fixing assembly and the lower mold body are arranged in a matched mode, so that the automation degree of machining is improved, and the production efficiency is improved; the fixing plate is arranged on the lower die body to fix the workpiece, so that the workpiece can be conveniently and accurately stamped, and the position deviation of a valve head receding pit during stamping is avoided.

Description

Technical Field

[0001] This utility model relates to the field of internal combustion engine valve processing technology, and in particular to a valve processing stamping and fixing device. Background Technology

[0002] The valve is responsible for inputting air into the internal combustion engine and expelling the exhaust gas after combustion. During manufacturing, in order to ensure cleaner exhaust gas discharge and more complete air intake, the valve is to open early and close late. To avoid collision between the valve and the piston, a recess is made on the top of the piston for the valve head. During valve manufacturing, two sections of steel of different materials are first welded together, and then the heated end is stamped. During the stamping process, due to a certain gap between the workpiece rod and the lower die, the workpiece position is offset during stamping, causing the recess position on the upper valve head to shift, affecting the product processing accuracy and reducing the product yield. Utility Model Content

[0003] To overcome the shortcomings in the prior art, this utility model discloses a valve processing stamping fixing device. This utility model sets a support device on the stamping machine, and sets a dust cover and a lower die body on the support device to fix the workpiece during stamping and prevent the valve head from shifting position during stamping.

[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0005] A valve processing stamping and fixing device includes a stamping machine, a support device, a dust cover, and a lower die body. The stamping machine is equipped with a support device, and the lower die body and dust cover are located above the support device. The upper end of the lower die body passes through the dust cover and is positioned below the punch of the stamping machine. The heated valve workpiece is installed on the lower die body. The support device and the lower die body cooperate to fix the lower end of the workpiece, and the punch and the lower die body cooperate to form the workpiece.

[0006] The dust cover includes a cover and a frame. The cover opening faces downwards, and the lower end of the cover has a frame with bolts distributed on the frame.

[0007] The support device includes a support platform, a hydraulic cylinder, a demolding component, and a fixing component. The upper edge of the support platform has threaded holes that are matched with bolts on the frame. A longitudinal connecting groove is provided at an eccentric position on the upper surface of the support platform. A hydraulic cylinder is installed in the connecting groove. The piston of the hydraulic cylinder passes through the upper end of the connecting groove. A demolding component is provided on the side of the hydraulic cylinder piston. A fixing component is provided at the upper end of the hydraulic cylinder piston.

[0008] The demolding assembly is located above the support platform. The demolding assembly includes a first connecting rod, a push rod, a sleeve, and a limiting rod. One end of the first connecting rod is connected to the upper side of the piston of the hydraulic cylinder, and the other end of the first connecting rod is provided with a sleeve. A limiting rod is provided inside the sleeve. The lower end of the limiting rod is connected to the upper surface of the support platform. A push rod is provided on the upper surface of the first connecting rod, and the lower surface of the push rod is connected to the upper surface of the first connecting rod.

[0009] The fixing assembly includes a second connecting rod and a retaining ring. The lower part of the second connecting rod is connected to the upper end of the hydraulic cylinder piston, and a retaining ring is provided on the side of the second connecting rod, which is fitted onto the lower mold body.

[0010] The lower mold body is provided with a fixing hole, which is on the same central axis as the lower mold body. The upper end of the push rod is set at the lower end of the fixing hole. Two support plates are symmetrically provided on the lower part of the lower mold body. The two support plates are respectively set on both sides of the first connecting rod. Four sliding grooves are equidistantly distributed on the side of the lower mold body. One end of the sliding groove passes through the side of the lower mold body, and the other end of the sliding groove is connected to the fixing hole. Two grooves are symmetrically provided on the inner walls on both sides of the sliding groove. Each sliding groove is provided with a fixing plate.

[0011] The fixing plate slides in the corresponding groove. One side of the fixing plate is set outside the lower mold body. The fixing plate has a sloping structure on one side outside the lower mold body. Both sides of the fixing plate are provided with connecting plates. The connecting plates are set in adjacent grooves. Springs are evenly provided on each connecting plate. One end of the spring is connected to the connecting plate, and the other end of the spring is connected to the inner wall of the groove near the fixing hole.

[0012] The present invention relates to a valve processing stamping and fixing device. This invention is highly practical and very convenient to use. By cooperating with the demolding component, fixing component and lower mold body, the automation level of processing is improved and the production efficiency is increased. By setting a fixing plate on the lower mold body to fix the workpiece, it is convenient to accurately stamp the workpiece and avoid the valve head indentation position from shifting during stamping. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the support device of this utility model;

[0015] Figure 3 This is a cross-sectional view of the support platform of this utility model;

[0016] Figure 4 This is a cross-sectional view of the lower mold body of this utility model;

[0017] Figure 5 This is a cross-sectional view of the lower mold body of this utility model;

[0018] Figure 6 This is a schematic diagram showing the positional relationship of the fixing plate of this utility model;

[0019] In the diagram: 1. Press; 2. Support platform; 3. Punch; 4. Protective cover; 5. Frame; 6. Lower die body; 7. Connecting groove; 8. Hydraulic cylinder; 9. Threaded hole; 10. First connecting rod; 11. Push rod; 12. Sleeve; 13. Limiting rod; 14. Second connecting rod; 15. Snap ring; 16. Support plate; 17. Fixing hole; 18. Slide groove; 19. Fixing plate; 20. Groove; 21. Spring; 22. Connecting plate. Detailed Implementation

[0020] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0021] Combined with appendix Figures 1-6 A valve processing stamping and fixing device includes a stamping machine 1, a support device, a dust cover, and a lower die 6. The stamping machine 1 is provided with a support device, and the lower die 6 and the dust cover are provided above the support device. The upper end of the lower die 6 passes through the dust cover. The lower die 6 is located below the punch 3 of the stamping machine 1. The heated valve workpiece is installed on the lower die 6. The support device cooperates with the lower die 6 to fix the lower end of the workpiece. The punch 3 cooperates with the lower die 6 to form the workpiece.

[0022] The dust cover includes a cover 4 and a frame 5. The cover 4 has an opening facing downwards, and the lower end of the cover 4 is provided with a frame 5. Bolts are distributed on the frame 5. The cover 4 prevents the steel slag generated by the workpiece during stamping from falling into the slide groove 18 of the lower mold body 6 below, which would affect the movement of the fixing plate 19 in the slide groove 18.

[0023] The support device includes a support platform 2, a hydraulic cylinder 8, a demolding component, and a fixing component. The upper edge of the support platform 2 has threaded holes 9, which are matched with bolts on the frame 5. The upper surface of the support platform 2 has a longitudinal connecting groove 7 at an eccentric position. The hydraulic cylinder 8 is installed in the connecting groove 7. The piston of the hydraulic cylinder 8 passes through the upper end of the connecting groove 7. The demolding component is installed on the side of the piston of the hydraulic cylinder 8, and the fixing component is installed at the upper end of the piston of the hydraulic cylinder 8.

[0024] The demolding assembly is located above the support platform 2. The demolding assembly includes a first connecting rod 10, a push rod 11, a sleeve 12, and a limiting rod 13. One end of the first connecting rod 10 is connected to the upper side of the piston of the hydraulic cylinder 8. The other end of the first connecting rod 10 is provided with a sleeve 12. The limiting rod 13 is provided inside the sleeve 12. The lower end of the limiting rod 13 is connected to the upper surface of the support platform 2. The upper surface of the first connecting rod 10 is provided with a push rod 11. The lower surface of the push rod 11 is connected to the upper surface of the first connecting rod 10. The push rod 11 rises to push the stamped workpiece out of the fixing hole 17.

[0025] The fixing assembly includes a second connecting rod 14 and a retaining ring 15. The lower part of the second connecting rod 14 is connected to the upper end of the piston of the hydraulic cylinder 8. The retaining ring 15 is provided on the side of the second connecting rod 14. The retaining ring 15 is sleeved on the lower mold body 6. The up and down movement of the retaining ring 15 controls the opening and closing of the fixing plate 19.

[0026] The lower mold body 6 is provided with a fixing hole 17, which is on the same central axis as the lower mold body 6. The upper end of the push rod 11 is set at the lower end of the fixing hole 17. The lower part of the lower mold body 6 is symmetrically provided with two support plates 16, which are respectively set on both sides of the first connecting rod 10. Four sliding grooves 18 are evenly distributed on the side of the lower mold body 6. One end of the sliding groove 18 passes through the side of the lower mold body 6, and the other end of the sliding groove 18 is connected to the fixing hole 17. Two grooves 20 are symmetrically provided on the inner walls on both sides of the sliding groove 18. Each sliding groove 18 is provided with a fixing plate 19, which slides in the sliding groove 18. The end of each fixing plate 19 near the fixing hole 17 cooperates to press against the side of the workpiece to fix the workpiece.

[0027] The fixing plate 19 slides within the corresponding groove 18. One side of the fixing plate 19 is located outside the lower mold body 6. The fixing plate 19 has a sloping structure on one side outside the lower mold body 6. Both sides of the fixing plate 19 are provided with connecting plates 22. The connecting plates 22 are located within adjacent grooves 20. Springs 21 are evenly provided on each connecting plate 22. One end of the spring 21 is connected to the connecting plate 22, and the other end of the spring 21 is connected to the inner wall of the groove 20 near the fixing hole 17. The springs 21 cause the fixing plate 19 to return to its original position.

[0028] The valve processing stamping and fixing device described in this embodiment involves installing a workpiece, heated at one end, onto the lower die body 6, with the lower end of the workpiece inserted into the fixing hole 17. The upper end of the ejector rod 11 supports the lower end of the workpiece. The hydraulic cylinder 8 operates, and its piston moves downward. Simultaneously, the demolding assembly and the fixing assembly move downward together. During the downward movement, the retaining ring 15 moves along the slope of each fixing plate 19, pressing the fixing plates 19 towards the fixing hole 17. This causes the fixing plates 19 close to the fixing hole 17 to engage with the side of the workpiece, fixing it in place. Then, the punch 3 is activated, and the punch 3 engages with the lower die... The lower die body 6 is used to form the workpiece. During the stamping process, the workpiece is fixed on the lower die body 6 to prevent the workpiece position from shifting. At the same time as the stamping, a relief groove is precisely stamped on the upper valve head to improve the product processing accuracy and yield. After the stamping is completed, the punch 3 separates from the lower die body 6, the piston of the hydraulic cylinder 8 rises, causing the retaining ring 15 to disengage from each fixing plate 19, and the spring 21 resets the fixing plate 19, making it easy for the workpiece to move in the fixing hole 17. The ejector rod 11 on the demolding assembly is fixed at the lower end of the workpiece, so that the workpiece head is removed from the lower die body 6, and the worker or robot arm can remove it.

[0029] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A valve processing stamping and fixing device, comprising a stamping machine (1), a support device, a dust cover, and a lower die body (6), wherein the stamping machine (1) is provided with a support device, and a lower die body (6) and a dust cover are provided above the support device, the upper end of the lower die body (6) passes through the dust cover, the lower die body (6) is located below the punch (3) of the stamping machine (1), and the heated valve workpiece is installed on the lower die body (6), characterized in that: The support device and the lower mold body (6) work together to fix the lower end of the workpiece, and the punch (3) works together with the lower mold body (6) to form the workpiece.

2. The valve processing stamping and fixing device according to claim 1, characterized in that: The dust cover includes a cover (4) and a frame (5). The cover (4) has an opening facing downwards, and the lower end of the cover (4) is provided with a frame (5). Bolts are distributed on the frame (5).

3. The valve processing stamping and fixing device according to claim 1, characterized in that: The support device includes a support platform (2), a hydraulic cylinder (8), a demolding component and a fixing component. The upper edge of the support platform (2) has threaded holes (9), which are matched with bolts on the frame (5). The upper surface of the support platform (2) has a longitudinal connecting groove (7) at an eccentric position. The hydraulic cylinder (8) is installed in the connecting groove (7). The piston of the hydraulic cylinder (8) passes through the upper end of the connecting groove (7). The side of the piston of the hydraulic cylinder (8) is provided with a demolding component, and the upper end of the piston of the hydraulic cylinder (8) is provided with a fixing component.

4. The valve processing stamping and fixing device according to claim 3, characterized in that: The demolding assembly is located above the support platform (2). The demolding assembly includes a first connecting rod (10), a push rod (11), a sleeve (12), and a limiting rod (13). One end of the first connecting rod (10) is connected to the upper side of the piston of the hydraulic cylinder (8). The other end of the first connecting rod (10) is provided with a sleeve (12). The limiting rod (13) is provided inside the sleeve (12). The lower end of the limiting rod (13) is connected to the upper surface of the support platform (2). The upper surface of the first connecting rod (10) is provided with a push rod (11). The lower surface of the push rod (11) is connected to the upper surface of the first connecting rod (10).

5. The valve processing stamping and fixing device according to claim 3, characterized in that: The fixing assembly includes a second connecting rod (14) and a retaining ring (15). The lower part of the second connecting rod (14) is connected to the upper end of the piston of the hydraulic cylinder (8). The side of the second connecting rod (14) is provided with a retaining ring (15), which is fitted onto the lower mold body (6).

6. The valve processing stamping and fixing device according to claim 5, characterized in that: The lower mold body (6) is provided with a fixing hole (17), the fixing hole (17) and the lower mold body (6) are on the same central axis, the upper end of the top rod (11) is set at the lower end of the fixing hole (17), the lower part of the lower mold body (6) is symmetrically provided with two support plates (16), the two support plates (16) are respectively set on both sides of the first connecting rod (10), the side of the lower mold body (6) is equidistantly arranged with four sliding grooves (18), one end of the sliding groove (18) passes through the side of the lower mold body (6), the other end of the sliding groove (18) is connected to the fixing hole (17), two grooves (20) are symmetrically provided on the inner wall on both sides of the sliding groove (18), and a fixing plate (19) is provided in each sliding groove (18).

7. The valve processing stamping and fixing device according to claim 6, characterized in that: The fixing plate (19) slides in the corresponding groove (18). One side of the fixing plate (19) is set outside the lower mold body (6). The fixing plate (19) has a sloping structure on one side outside the lower mold body (6). Both sides of the fixing plate (19) are provided with connecting plates (22). The connecting plates (22) are set in adjacent grooves (20). Springs (21) are evenly provided on each connecting plate (22). One end of the spring (21) is connected to the connecting plate (22), and the other end of the spring (21) is connected to the inner wall of the groove (20) near the fixing hole (17).

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