Car door stamping die convenient to replace

Abstract

The utility model relates to the technical field of dies, and discloses a convenient-to-replace stamping die for car doors, which comprises an upper die holder and a lower die holder, a vertical shaft is fixedly mounted on the upper die holder, a cylindrical rotating body is coaxially and rotatably connected onto the vertical shaft, a disc is coaxially fixed at the bottom end of the rotating body, and the lower die holder is fixedly connected with the lower die holder. A plurality of radial sliding grooves are formed in the lower surface of the disc around the central axis of the disc, a male die is slidably installed in each radial sliding groove, a plurality of female dies in one-to-one correspondence with the male dies are fixedly installed on the die base, the disc is coaxially sleeved with an outer cylinder, the outer cylinder is fixed to the upper die base, and an in-out sliding groove corresponding to any radial sliding groove is formed in the bottom end of the outer cylinder in a penetrating mode. And a driving module is arranged on the outer cylinder and used for driving the rotating body to rotate, and a limiting module is further arranged on the outer cylinder and used for limiting the rotating body. The male die can be horizontally taken out from the upper die base in a sliding mode, so that the die is convenient and fast to replace.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically, to a stamping mold for car doors that is easy to replace. Background Technology

[0002] When stamping car door parts using stamping dies, the scrap material falls directly from the die cavity during the stamping process, and the scrap material only rubs against the inner wall of the die cavity once. However, the punch needs to pass through the base material once and then exit the base material, resulting in two frictions between the base material and the circumference of the punch. This causes the punch to wear out faster than the die cavity. Therefore, it is necessary to replace the punches with more wear regularly. In the use of existing stamping dies, the punches are mainly fixed to the bottom surface of the upper die holder by bolts or clips. Due to the complex shape of car doors, multiple punches are installed on the upper die holder in a single stamping process to stamp multiple parts on the part at once. When replacing multiple punches with more wear, especially when the upper die holder cannot be disassembled, workers need to replace multiple punches in a narrow area between the upper and lower die holders, which is very inconvenient. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a stamping die for car doors that is easy to replace, so as to solve the problem of inconvenient replacement of the punch mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a replaceable stamping die for a car door, comprising an upper die base and a lower die base. A vertical shaft is fixedly installed on the upper die base, and a rotating body is coaxially rotatably connected to the vertical shaft. A disc is coaxially fixed at the bottom end of the rotating body. Several radial grooves are formed around the central axis on the lower surface of the disc, and a punch is slidably installed in each radial groove. Several dies corresponding to the punches are fixedly installed on the lower die base. An outer cylinder is coaxially sleeved on the disc and fixed to the upper die base. An inlet / outlet groove corresponding to any radial groove is formed through the bottom end of the outer cylinder. A drive module is provided on the outer cylinder for driving the rotating body to rotate. A limit module is also provided on the outer cylinder for limiting the rotation of the rotating body.

[0005] As a preferred technical solution of this utility model, the drive module includes a gear ring, a gear, and a rotating shaft. The gear ring is coaxially fixed on the rotating body, and an insertion port is provided on the outer cylinder. A gear that meshes with the gear ring is inserted into the insertion port, and a rotating shaft is coaxially fixed on the gear. The rotating shaft is rotatably connected to the outer cylinder.

[0006] As a preferred technical solution of this utility model, the limiting module includes a friction ring, the friction ring is coaxially fixed on the rotating body, a plurality of telescopic holes corresponding to the friction ring are opened circumferentially on the inner wall of the outer cylinder, a piston is telescopically installed in each telescopic hole, a limiting post is fixedly installed on the piston near the friction ring, an air guiding cavity is opened in the outer cylinder, the telescopic holes are all connected to the air guiding cavity, and an air filling and defilling device connected to the air guiding cavity is provided on the outer wall of the outer cylinder.

[0007] As a preferred technical solution of this utility model, the friction ring is made of cast iron.

[0008] As a preferred embodiment of this utility model, a ceramic friction plate is fixedly installed on the end of the limiting post near the friction ring.

[0009] As a preferred embodiment of this invention, the air guide cavity is annular.

[0010] As a preferred embodiment of this invention, the surface of the punch is provided with a metal wear-resistant coating.

[0011] As a preferred embodiment of this utility model, the lower end of the rotating body is shaped like a frustum.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] By slidably mounting multiple punches on a disc, when any punch is damaged, the operator releases the limiting module from the rotating body and then operates the drive module to drive the disc to rotate until the radial groove of the punch on the disc aligns with the inlet / outlet groove on the outer cylinder. The rotation stops, and the punch is slid out and removed along the aligned radial and inlet / outlet grooves. A new punch is then pushed in through the radial and inlet / outlet grooves. After replacement, the drive mechanism resets the rotating body, and the limiting module is then used to limit the rotating body. The entire replacement process is very convenient and quick because the punch can be slidably removed horizontally from the upper die holder. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a car door stamping die that is easy to replace according to the present invention;

[0015] Figure 2 This is a schematic diagram of the upper die base of a car door stamping die that is easy to replace according to the present invention.

[0016] Figure 3 This is a cross-sectional view of the upper die base of a car door stamping die that is easy to replace according to this utility model.

[0017] Figure 4 for Figure 3 A schematic diagram of the partial structure at point A;

[0018] Figure 5 This is a schematic diagram illustrating the installation principle of the punch of a car door stamping die that is easy to replace according to this utility model.

[0019] Figure 6 This is a schematic diagram showing the positions of the inlet / outlet slide and radial slide of a door stamping die that is easy to replace according to this utility model.

[0020] In the diagram: 1. Upper mold base; 2. Lower mold base; 3. Cavity mold; 4. Outer cylinder; 5. Punch mold; 6. Disc; 7. Radial groove; 8. Inlet and outlet groove; 9. Rotating body; 10. Vertical shaft; 11. Gear ring; 12. Gear; 13. Rotating shaft; 14. Friction ring; 15. Expansion hole; 16. Limiting post; 17. Air guide cavity. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 6 As shown, this utility model provides a replaceable stamping die for a car door, including an upper die base 1 and a lower die base 2. A vertical shaft 10 is fixedly installed on the upper die base 1, and a rotating body 9 is rotatably connected to the vertical shaft 10. A disc 6 is coaxially fixed at the bottom end of the rotating body 9. Several radial grooves 7 are formed around the central axis on the lower surface of the disc 6. A punch 5 is slidably installed in each radial groove 7. Several dies 3 corresponding to the punches 5 are fixedly installed on the lower die base 2. An outer cylinder 4 is coaxially sleeved on the disc 6 and fixed on the upper die base 1. An inlet and outlet groove 8 corresponding to any radial groove 7 is formed through the bottom end of the outer cylinder 4. A drive module is provided on the outer cylinder 4 to drive the rotating body 9 to rotate. A limit module is also provided on the outer cylinder 4 to limit the rotation of the rotating body 9. The outer cylinder 4 and the disc 6 work together. The punch 5 can only slide out when the radial groove 7 and the inlet / outlet groove 8 are aligned. If they are not aligned, the punch 5 is restricted by the outer cylinder 4 and cannot be removed. The surface of the punch 5 is coated with a metal wear-resistant coating. The metal wear-resistant coating can greatly improve the wear resistance of the punch 5, thereby extending the service life of the device. The lower end of the rotating body 9 is frustoconical, which can improve the connection strength of the disc 6.

[0023] The drive module includes a gear ring 11, a gear 12, and a rotating shaft 13. The gear ring 11 is coaxially fixed to the rotating body 9. An insertion port is provided on the outer cylinder 4, into which the gear 12 meshes with the gear ring 11. The rotating shaft 13 is coaxially fixed to the gear 12 and rotatably connected to the outer cylinder 4. In use, a crank is mounted on the rotating shaft 13. Rotating the shaft 13 with the crank causes it to drive the gear 12, which in turn drives the gear ring 11, which in turn drives the entire rotating body 9. By using gear 12 for transmission, the rotation distance can be controlled more precisely, allowing for more accurate alignment of the punch 5 and the die 3. Alternatively, a motor drive can be used for control.

[0024] The limiting module includes a friction ring 14, which is coaxially fixed on the rotating body 9. Several telescopic holes 15 corresponding to the friction ring 14 are circumferentially formed on the inner wall of the outer cylinder 4. A piston is telescopically installed in each telescopic hole 15. A limiting post 16 is fixedly installed on the piston near the friction ring 14. An air guide cavity 17 is formed inside the outer cylinder 4, and the telescopic holes 15 communicate with the air guide cavity 17. An air filling / deleting device 18 communicating with the air guide cavity 17 is provided on the outer wall of the outer cylinder 4. By providing this limiting module, the rotating body 9 can be limited after the punch 5 on the upper die holder 1 and the die 3 on the lower die holder 2 are aligned, ensuring that the alignment remains unchanged during the stamping process. Gas is injected into the air guide chamber 17 using the inflation / deflation device 18. This causes the pistons in the multiple telescopic holes 15 connected to the chamber to be pushed by the gas, moving them towards the friction ring 14. Finally, the pistons drive the limiting post 16 to contact the friction ring 14, using the friction between them to limit the friction ring 14, thereby limiting the rotating body 9 connected to the friction ring 14. The friction ring 14 is made of cast iron. Cast iron friction rings are low in cost, have good wear resistance, excellent heat dissipation, and strong impact resistance. A ceramic friction plate is fixedly installed on the limiting post 16 near the friction ring 14. Ceramic friction plates are lightweight, have good thermal stability, and a stable coefficient of friction. The air guide chamber 17 is annular. The annular air guide chamber 17 allows for easier simultaneous connection of multiple telescopic holes 15.

[0025] When this utility model is in use, if any punch 5 is damaged, the operator releases the limiting module from the rotating body 9, and then drives the rotating body 9 to rotate via gear 12. The rotating body 9 drives the disc 6 to rotate until the radial groove 7 on the disc 6 where the punch 5 is located aligns with the inlet / outlet groove 8 on the outer cylinder 4. Then the rotation stops. At this time, the punch 5 is slid out and removed along the aligned radial groove 7 and inlet / outlet groove 8. Then the new punch 5 is pushed in through the radial groove 7 and inlet / outlet groove 8. After the replacement is completed, the driving mechanism is used to reset the rotating body 9, and then the limiting module is used to limit the rotating body 9. The whole replacement process is very convenient and quick because the punch 5 can be slidably removed from the upper die holder 1 horizontally.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable stamping die for a car door, comprising an upper die holder (1) and a lower die holder (2), characterized in that: A vertical shaft (10) is fixedly installed on the upper mold base (1). A rotating body (9) is coaxially rotatably connected to the vertical shaft (10). A disc (6) is coaxially fixed at the bottom end of the rotating body (9). Several radial grooves (7) are opened around the central axis on the lower surface of the disc (6). A punch (5) is slidably installed in each of the radial grooves (7). Several concave molds (3) corresponding to the punches (5) are fixedly installed on the lower mold base (2). An outer cylinder (4) is coaxially sleeved on the disc (6). The outer cylinder (4) is fixed on the upper mold base (1). An inlet and outlet groove (8) corresponding to any radial groove (7) is opened through the bottom end of the outer cylinder (4). A driving module is provided on the outer cylinder (4). The driving module is used to drive the rotating body (9) to rotate. A limiting module is also provided on the outer cylinder (4). The limiting module is used to limit the rotating body (9).

2. The easily replaceable stamping die for a car door according to claim 1, characterized in that, The drive module includes a gear ring (11), a gear (12), and a rotating shaft (13). The gear ring (11) is coaxially fixed on the rotating body (9). An insertion port is provided on the outer cylinder (4). A gear (12) that meshes with the gear ring (11) is inserted into the insertion port. A rotating shaft (13) is coaxially fixed on the gear (12). The rotating shaft (13) is rotatably connected to the outer cylinder (4).

3. The easily replaceable stamping die for a car door according to claim 1, characterized in that: The limiting module includes a friction ring (14). The friction ring (14) is coaxially fixed on the rotating body (9). Several telescopic holes (15) corresponding to the friction ring (14) are opened along the circumferential direction on the inner wall of the outer cylinder (4). A piston can be telescopically installed in each telescopic hole (15). A limiting post (16) is fixedly installed on the side of the piston near the friction ring (14). An air guide cavity (17) is opened in the outer cylinder (4). The telescopic holes (15) are all connected to the air guide cavity (17). An air filling and defilling device (18) connected to the air guide cavity (17) is provided on the outer wall of the outer cylinder (4).

4. The easily replaceable stamping die for a car door according to claim 3, characterized in that: The friction ring (14) is made of cast iron.

5. A replaceable stamping die for a car door according to claim 3, characterized in that: A ceramic friction plate is fixedly installed on one end of the limiting post (16) near the friction ring (14).

6. A replaceable stamping die for a car door according to claim 3, characterized in that: The air guide cavity (17) is circular.

7. The easily replaceable stamping die for a car door according to claim 1, characterized in that: The surface of the punch (5) is provided with a metal wear-resistant coating.

8. A replaceable stamping die for a car door according to claim 1, characterized in that: The lower end of the rotating body (9) is truncated cone-shaped.

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