Continuous stamping die for thrust washer

Abstract

The utility model discloses a thrust washer continuous stamping die which is characterized by comprising a lower die base, a lower die bottom plate, a lower die base plate, a lower die, an upper die discharging plate, an upper die mounting plate, an upper die base plate and an upper die bottom plate. A punching punch, an outer circle semi-shearing punch, an outer circle punch and a cutting punch are sequentially arranged on the upper die mounting plate. The lower die is provided with a first blanking hole corresponding to the punching punch, an outer circle semi-shearing ejector block corresponding to the outer circle semi-shearing punch, a second blanking hole corresponding to the outer circle punch and a waste blanking opening corresponding to the cutting punch. The die has the advantages that a product is formed at a time, product forming can be completed only through five working steps, the flanging situation of the product is eradicated, heat treatment deformation loss caused by flanging is reduced, the material consumption is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of stamping dies, specifically to a continuous stamping die for thrust washers. Background Technology

[0002] Thrust washers are generally used for fixing purposes; more specifically, they prevent axial movement of parts. Current thrust washer manufacturing primarily involves stamping using stamping dies. However, existing stamping dies have numerous steps, and worn punches easily cause the product to fold, ultimately leading to deformation and scrapping during subsequent heat treatment, resulting in high waste. Summary of the Invention

[0003] In view of the shortcomings of the prior art, this utility model provides a continuous stamping die for thrust washers, which saves steps, eliminates product folding, and improves production efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A continuous stamping die for thrust washers, characterized in that it comprises a lower die base, a lower die bottom plate, a lower die pad, a lower die, an upper die stripper plate, an upper die mounting plate, an upper die pad, and an upper die bottom plate. The lower die bottom plate is disposed above the lower die base, and multiple lower die supports are provided between the lower die bottom plate and the lower die base. The lower die pad is disposed on the lower die bottom plate, and the lower die is disposed on the lower die pad. The upper die bottom plate is disposed above the lower die bottom plate via an independent guide post assembly. The upper die pad is disposed on the bottom surface of the upper die bottom plate, and the upper die mounting plate is disposed on the upper die pad. On the bottom surface, the upper mold plate is sequentially provided with a punching punch, an outer circular half-shear punch, an outer circular punch, and a cutting punch. The upper mold stripper plate is floatingly disposed below the upper mold plate via a connecting equal-height sleeve. The upper mold stripper plate has through holes corresponding to the punching punch, the outer circular half-shear punch, the outer circular punch, and the cutting punch. The lower mold has a first blanking hole corresponding to the punching punch. The lower mold is provided with an outer circular half-shear top block corresponding to the outer circular half-shear punch. The lower mold has a second blanking hole corresponding to the outer circular punch. The lower mold is provided with a waste discharge port corresponding to the cutting punch.

[0006] Furthermore, one end of the lower mold is provided with a set of relatively arranged feeding guide blocks, the feeding guide blocks having an upper limit part, and the lower mold having multiple sets of guiding floating pins spaced apart along the length direction, the guiding floating pins having guiding limit grooves.

[0007] Furthermore, the upper die plate is provided with two shoulder-shaped punches, and the lower die has a scrap discharge hole corresponding to the shoulder-shaped punches. The shoulder-shaped punches are located on one side of the punching punch. A set of guide pins is provided between any adjacent punches, outer half-shear punches, outer punches, and cutting punches. The spacing between two adjacent sets of guide pins is equal. The guide pins are fixed on the mounting plate, and the lower end of the guide pins passes through the upper die stripper plate. The lower die has guide pin clearance holes corresponding to the guide pins.

[0008] Furthermore, the lower end of the connecting equal height sleeve is connected to the upper mold unloading plate, and the upper end is vertically limited to the upper mold mounting plate. An unloading spring is sleeved on the connecting equal height sleeve, the lower end of the unloading spring abuts against the top surface of the upper mold unloading plate, and the upper end abuts against the bottom surface of the upper mold mounting plate.

[0009] Furthermore, the outer circular semi-shear top block is movably mounted on the lower mold, and a nitrogen spring is connected to the lower end of the outer circular semi-shear top block.

[0010] Furthermore, a finished product receiving groove is provided below the second material discharge hole.

[0011] The beneficial effects of this utility model include: the product is formed in one step, and the product forming can be completed in only five steps, eliminating the product from turning over, reducing the loss of heat treatment deformation caused by turning over, reducing material consumption, and improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 This is the left view of this utility model. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0016] One such Figure 1-3The thrust washer continuous stamping die shown includes a lower die base 1, a lower die base plate 2, a lower die pad plate 3, a lower die 4, an upper die stripper plate 5, an upper die mounting plate 6, an upper die pad plate 7, and an upper die base plate 8. The lower die base plate 2 is positioned above the lower die base 1, and multiple lower die support feet 9 are provided between the lower die base plate 2 and the lower die base 1 to elevate the lower die base plate 8. The lower die pad plate 3 is positioned on the lower die base plate 2, and the lower die 4 is positioned on the lower die pad plate 3. The upper die base plate 2 is positioned above the lower die base plate 2 via independent guide post assemblies 9. These independent guide post assemblies 9 are located at the four corners of the upper die base plate 7 and the lower die base plate 2 to ensure that the upper and lower dies are aligned during stamping. The upper die pad plate 7 is positioned on the bottom surface of the upper die base plate 2, and the upper die mounting plate 6 is positioned on the bottom surface of the upper die pad plate 7. The upper die plate 6 is sequentially equipped with a punching punch 10, an outer circular half-shear punch 11, an outer circular punch 12, and a cutting punch 13. These four punches enable the stamping and forming of thrust washers. The upper die stripper plate 5 is floatingly positioned below the upper die plate 6 via a connecting equal-height sleeve 22. It is used to peel the product off the punches after each stamping step and to pre-tighten the material strip during stamping. The upper die stripper plate 5 has through holes corresponding to the punching punch 10, the outer circular half-shear punch 11, the outer circular punch 12, and the cutting punch 13 to ensure that the punches pass smoothly through the upper die stripper plate 5. The lower die 4 has a first blanking hole 14 corresponding to the punching punch 10. The punched inner circular pieces fall from the first blanking hole 14. A guide groove is provided below the first blanking hole 14 to guide the falling material to the collection frame. The lower die 4 is provided with an outer circular half-shear top block 15 corresponding to the outer circular half-shear punch 11. The outer circular half-shear top block 15 is movably mounted on the lower die 4, and a nitrogen spring 24 is connected to the lower end of the outer circular half-shear top block 15. The interaction between the outer circular half-shear punch 11 and the outer circular half-shear top block 15 causes the thrust washer to be punched but not fall off. The outer circle is then punched off once by the outer circular punch to form the finished product. The lower die 4 has a second blanking hole 16 corresponding to the outer circular punch 12. The finished product falls into the second blanking hole 16. This two-stage punching method can effectively avoid excessive punch wear and prevent edge flipping. A finished product receiving groove 25 is provided below the second blanking hole 16. The lower die 4 is provided with a waste material discharge port 17 corresponding to the cutting punch 13. The cutting punch 13 is used to cooperate with the lower die to cut the waste material strip.

[0017] To ensure the material strip automatically passes through multiple steps, a set of relatively arranged feeding guide blocks 18 are provided at one end of the lower die 4 to guide the material strip. The feeding guide blocks 18 have upper limit parts to prevent the material strip from detaching from the feeding guide blocks 18. Multiple sets of guide floating pins 19 are arranged at intervals along the length direction on the lower die 4. The guide floating pins 19 have guide limiting grooves 20, and the outer side of the material strip is limited within the guide limiting grooves 20. They can be raised and lowered according to the movement of the upper die, so that the material strip is always limited left and right.

[0018] To ensure accurate positioning during continuous processing steps, the upper die plate 6 in this embodiment is equipped with two shoulder-shaped punches 21, and the lower die 4 has scrap holes corresponding to the shoulder-shaped punches 21. The shoulder-shaped punches 21 are located on one side of the punching punch 10 as the first processing step for the strip, i.e., two positioning holes are pre-punched on the strip. Then, a set of guide pins 21 is provided between any adjacent punching punch 10, outer circular half-shear punch 11, outer circular punch 12, and cutting punch 13, with equal spacing between adjacent sets of guide pins 21. The guide pins 21 are fixed on the mounting plate 6, and the lower end of the guide pin 21 is tapered, passing through the upper die unloading plate 5. Each processing step uses the guide pins 21 passing through the positioning holes to achieve positioning of the strip's extension direction. The lower die 4 has a guide pin clearance hole corresponding to the guide pin 21. When the die is closed and stamped, the guide pin 21 passes through the positioning hole on the strip and is inserted into the guide pin clearance hole on the lower die.

[0019] like Figure 1 As shown, the lower end of the connecting equal height sleeve 22 is connected to the upper mold unloading plate 5, and the upper end is vertically limited to the upper mold mounting plate 6. An unloading spring 23 is sleeved on the connecting equal height sleeve 22. The lower end of the unloading spring 23 abuts against the top surface of the upper mold unloading plate 5, and the upper end abuts against the bottom surface of the upper mold mounting plate 6.

[0020] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A continuous stamping die for thrust washers, characterized in that: The assembly includes a lower mold base (1), a lower mold base plate (2), a lower mold pad plate (3), a lower mold (4), an upper mold unloading plate (5), an upper mold mounting plate (6), an upper mold pad plate (7), and an upper mold base plate (8). The lower mold base plate (2) is located above the lower mold base (1). Multiple lower mold support legs (9) are provided between the lower mold base plate (2) and the lower mold base (1). The lower mold pad plate (3) is located on the lower mold base plate (2). The lower mold (4) is located on the lower mold pad plate (3). The upper mold base plate (8) is located above the lower mold base plate (2) via an independent guide post assembly. The upper mold pad plate (7) is located on the bottom surface of the upper mold base plate (8). The upper mold mounting plate (6) is located on the bottom surface of the upper mold pad plate (7). The upper mold mounting plate (6) is provided with punches in sequence. The upper die (10), outer circular half-shear punch (11), outer circular punch (12), and cutting punch (13) are connected by a connecting equal height sleeve (22) and float below the upper die mounting plate (6). The upper die (5) has through holes corresponding to the punching punch (10), outer circular half-shear punch (11), outer circular punch (12), and cutting punch (13). The lower die (4) has a first blanking hole (14) corresponding to the punching punch (10). The lower die (4) is provided with an outer circular half-shear top block (15) corresponding to the outer circular half-shear punch (11). The lower die (4) has a second blanking hole (16) corresponding to the outer circular punch (12). The lower die (4) is provided with a waste discharge port (17) corresponding to the cutting punch (13).

2. The continuous stamping die for thrust washers according to claim 1, characterized in that: One end of the lower mold (4) is provided with a set of oppositely arranged feeding guide blocks (18), the feeding guide blocks (18) have an upper limit part, and the lower mold (4) is provided with multiple sets of guiding floating pins (19) spaced apart along the length direction, the guiding floating pins (19) have guiding limit grooves (20).

3. The continuous stamping die for thrust washers according to claim 1, characterized in that: The upper mold plate (6) is provided with two shoulder-shaped punches (21). The lower mold (4) has a scrap hole corresponding to the shoulder-shaped punches (21). The shoulder-shaped punches (21) are located on one side of the punching punch (10). A set of guide pins (26) is provided between any adjacent punches (10), outer round half-shear punches (11), outer round punches (12), and cutting punches (13). The spacing between two adjacent sets of guide pins (26) is equal. The guide pins (26) are fixed on the upper mold plate (6). The lower end of the guide pins (26) is tapered. The lower end of the guide pins (26) passes through the upper mold unloading plate (5). The lower mold (4) has guide pin clearance holes corresponding to the guide pins (26).

4. The continuous stamping die for thrust washers according to claim 1, characterized in that: The lower end of the connecting equal height sleeve (22) is connected to the upper mold unloading plate (5), and the upper end is vertically limited to the upper mold mounting plate (6). The connecting equal height sleeve (22) is fitted with an unloading spring (23). The lower end of the unloading spring (23) abuts against the top surface of the upper mold unloading plate (5), and the upper end abuts against the bottom surface of the upper mold mounting plate (6).

5. The thrust washer continuous stamping die of claim 1, wherein: The outer circular semi-shear top block (15) is movably mounted on the lower mold (4), and a nitrogen spring (24) is connected to the lower end of the outer circular semi-shear top block (15).

6. The continuous stamping die for thrust washers according to claim 1, characterized in that: A finished product receiving groove (25) is provided below the second material discharge hole (16).

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