Automobile door hinge precision stamping die

Abstract

The utility model relates to door accessory processing equipment technical field, and specifically is a kind of automobile door hinge precision stamping die, including lower die and upper die, the both sides of upper die are provided with first runner, and one telescopic column is provided in each first runner, second runner is provided between two first runner, and jacks are slidably arranged in the second runner, first spring is fixedly arranged in the side of jacks, third runner is provided between second runner and each first runner, and one sliding plate is slidably arranged in each third runner, and the both sides of each sliding plate are fixedly connected with corresponding telescopic column and jacks respectively, effectively solve the problem of waste adhesion.

Description

Technical Field

[0001] This utility model relates to the technical field of car door accessory processing equipment, and more specifically, to a precision stamping die for car door hinges. Background Technology

[0002] Automotive door hinge stamping dies are key process equipment used for the mass production of automotive door hinges. They are usually made of high-strength alloy steel and have the characteristics of high precision, high wear resistance and long service life. Automotive door hinge stamping dies not only directly affect product quality and production efficiency, but also serve as an important technical support for achieving lightweight and modular production of automobiles.

[0003] For example, Chinese patent disclosure: A stamping die for a car door hinge, application number: CN202221109654.4, includes a base, two fixing blocks are fixedly connected to the top of the base, and a material tray is provided on the top of the two fixing blocks. A rectangular groove is opened on the top of the material tray, and a slot is opened at the bottom of the rectangular groove. A flat plate is provided on the top of the slot. Several mounting holes are opened on both sides of the inner wall of the rectangular groove. An electric telescopic rod is fixedly connected to the center of the top of the base. Through the set mounting blocks, limit frame and slider, the motor drives the bidirectional threaded rod to rotate, thereby driving the two sliders to move closer to each other, clamping the hinge plate to be processed, so that it is located at the top center of the lower die. At the same time, the limit frame limits the two ends of the hinge plate, effectively reducing the workpiece offset during stamping, greatly improving the stamping quality and working efficiency of the hinge, and making it easier for users to use.

[0004] However, in the above-mentioned technical solutions, in the automotive manufacturing field, the door hinge, as a key safety component connecting the door and the body, usually relies on the precision stamping of high-strength steel plates for production. This places extremely high demands on the reliability, accuracy, and lifespan of the molds. However, during the precision stamping process of such components, especially after the punching process, the waste generated by the punching is very easy to stick to the end of the upper mold due to oil adsorption or the elastic effect of the material itself, and cannot be easily removed. This not only affects the positioning accuracy of subsequent stamping, leading to product defects or even damaging the mold cutting edge, but also requires frequent machine shutdowns for cleaning, which seriously restricts production efficiency and automation continuity. Utility Model Content

[0005] The main objective of this invention is to provide a precision stamping die for automotive door hinges. This die effectively addresses the challenges in the automotive manufacturing industry, where door hinges, as critical safety components connecting the door and the vehicle body, typically rely on precision stamping of high-strength steel plates. This places extremely high demands on the reliability, precision, and lifespan of the die. However, during the precision stamping process of such components, especially after the punching process, the waste material generated during punching is easily adhered to the end of the upper die due to oil adsorption or the elastic effect of the material itself, making it difficult to detach. This not only affects the positioning accuracy of subsequent stamping, leading to product defects and even damaging the die cutting edge, but also requires frequent machine shutdowns for cleaning, severely restricting production efficiency and automation continuity.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a precision stamping die for an automotive door hinge, comprising a lower die and an upper die. The upper die has a first sliding groove on both sides, and a telescopic column is provided in each first sliding groove. A second sliding groove is provided between two first sliding grooves, and a top column is slidably provided in the second sliding groove. A first spring is fixedly provided on one side of the top column. A third sliding groove is provided between the second sliding groove and each first sliding groove, and a sliding plate is slidably provided in each third sliding groove. The two sides of each sliding plate are fixedly connected to the corresponding telescopic column and the top column, respectively.

[0007] Preferably, a number of guide pillars are provided between the lower mold and the upper mold.

[0008] Preferably, the first spring is fixedly installed in the second slide groove, and the guide post is slidably connected to the lower mold and the upper mold.

[0009] Preferably, the telescopic column includes a telescopic column base, a fourth sliding groove is provided on the telescopic column base, a push column is slidably disposed in the fourth sliding groove, and a second spring is fixedly disposed on one end of the push column.

[0010] Preferably, the telescopic column base is slidably disposed in the first slide groove, and the second spring is fixedly installed in the fourth slide groove.

[0011] Preferably, the telescopic column base is fixedly connected to the slide plate, and the elastic force of the second spring is greater than that of the first spring.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In the initial stage of mold closing, the telescopic column contacts the lower mold first. Because its internal spring force is greater, it will drive the linkage mechanism to retract the top column to be flush with the end face of the upper mold, thus avoiding interference with the stamping. When the mold is opened, the telescopic column resets first under the action of the spring, releasing the constraint on the top column. The top column then pops out under its own spring drive, reliably pushing the waste material off, effectively solving the problem of waste material sticking. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a precision stamping die for an automotive door hinge according to the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of a precision stamping die for an automotive door hinge according to this utility model;

[0016] Figure 3 This is a schematic diagram of the telescopic column in a precision stamping die for an automotive door hinge according to this utility model.

[0017] In the diagram: 1. Lower mold; 2. Upper mold; 3. First slide groove; 4. Telescopic column; 401. Telescopic column base; 402. Fourth slide groove; 403. Second spring; 404. Push column; 5. Second slide groove; 6. Top column; 7. First spring; 8. Third slide groove; 9. Slide plate; 10. Guide column. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1 and Figure 2 As shown, a precision stamping die for an automotive door hinge includes a lower die 1 and an upper die 2. The upper die 2 has a first slide groove 3 on both sides, and a telescopic post 4 is provided in each first slide groove 3. A second slide groove 5 is provided between two first slide grooves 3. A top post 6 is slidably provided in the second slide groove 5. A first spring 7 is fixedly provided on one side of the top post 6. A third slide groove 8 is provided between the second slide groove 5 and each first slide groove 3. A sliding plate 9 is slidably provided in each third slide groove 8. The two sides of each sliding plate 9 are fixedly connected to the corresponding telescopic post 4 and top post 6, respectively.

[0020] Several guide pillars 10 are provided between the lower mold 1 and the upper mold 2.

[0021] like Figure 3 As shown, in another embodiment of the present invention, the telescopic column 4 includes a telescopic column base 401, a fourth sliding groove 402 is provided on the telescopic column base 401, a push column 404 is slidably provided in the fourth sliding groove 402, and a second spring 403 is fixedly provided on one end of the push column 404.

[0022] When the mold is closed, the upper mold 2 moves down. Since the elastic force of the second spring 403 is greater than that of the first spring 7, after the push column 404 contacts the lower mold 1, it first pushes the telescopic column base 401 to slide in the first slide groove 3. Through the fixedly connected slide plate 9, the push column 6 is driven to retract in the second slide groove 5 until its end is flush with the stamping surface of the upper mold 2. At this time, the second spring 403 begins to compress to make up for the subsequent stroke, ensuring that the push column 6 is completely retracted before stamping to avoid interference.

[0023] After stamping is completed and the mold is opened, the second spring 403 pushes the push column 404 to reset during the upward process of the upper mold 2. Then, the constraint on the top column 6 is released through the linkage between the telescopic column base 401 and the slide plate 9. The first spring 7 then drives the top column 6 to move forward and push out the waste material.

[0024] The working principle of a precision stamping die for automotive door hinges:

[0025] During use, in the initial stage of mold closing, the upper mold 2 moves downward, causing the pusher 404 of the telescopic column 4 to contact the surface of the lower mold 1 first. Since the elastic force of the second spring 403 is greater than that of the first spring 7, the force preferentially pushes the telescopic column base 401 to slide along the first slide groove 3. Through the linkage of the slide plate 9, the top column 6 moves backward in the second slide groove 5 and compresses the first spring 7, so that the end of the top column 6 retracts to be flush with the end face of the upper mold 2. Then, the pusher 404 continues to be compressed to compress the second spring 403 to make up for the stroke margin. At this time, the upper mold 2 completes the punching. When the mold opens, the upper mold 2 rises, and the second spring 403 releases its elastic force first to push the pusher 404 to reset, causing the telescopic column base 401 to slide in the opposite direction. Then, through the slide plate 9, the constraint on the top column 6 is released, and the first spring 7 then drives the top column 6 to move forward to push out the waste material in the upper mold 2, effectively solving the problem that the waste material sticks to the upper mold 2 due to oil stains or elastic effect after stamping.

[0026] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A precision stamping die for an automobile door hinge, comprising a lower die (1) and an upper die (2), characterized in that: The upper mold (2) is provided with a first slide groove (3) on both sides. A telescopic column (4) is provided in each first slide groove (3). A second slide groove (5) is provided between two first slide grooves (3). A top column (6) is slidably provided in the second slide groove (5). A first spring (7) is fixedly provided on one side of the top column (6). A third slide groove (8) is provided between the second slide groove (5) and each first slide groove (3). A sliding plate (9) is slidably provided in each third slide groove (8). The two sides of each sliding plate (9) are fixedly connected to the corresponding telescopic column (4) and top column (6) respectively.

2. The precision stamping die for an automotive door hinge according to claim 1, characterized in that: Several guide pillars (10) are provided between the lower mold (1) and the upper mold (2).

3. The precision stamping die for an automotive door hinge according to claim 2, characterized in that: The first spring (7) is fixedly installed in the second slide groove (5), and the guide post (10) is slidably connected to the lower mold (1) and the upper mold (2).

4. The precision stamping die for an automotive door hinge according to claim 3, characterized in that: The telescopic column (4) includes a telescopic column base (401), a fourth sliding groove (402) is provided on the telescopic column base (401), a push column (404) is slidably provided in the fourth sliding groove (402), and a second spring (403) is fixedly provided on one end of the push column (404).

5. A precision stamping die for an automotive door hinge according to claim 4, characterized in that: The telescopic column base (401) is slidably disposed in the first slide groove (3), and the second spring (403) is fixedly installed in the fourth slide groove (402).

6. A precision stamping die for an automotive door hinge according to claim 5, characterized in that: The telescopic column base (401) is fixedly connected to the slide plate (9), and the elastic force of the second spring (403) is greater than that of the first spring (7).

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