Automobile door hinge forming die

Abstract

The utility model belongs to the field of automobiles, and provides an automobile door hinge forming die which comprises a lower die, an upper die, a lower flash bridge and an upper flash bridge. Wherein a containing cavity is formed in the lower die, and a lower half cavity is formed in the bottom wall of the containing cavity; a boss capable of stretching into the containing cavity is formed in the upper die, an upper half cavity is formed in the boss, and the upper half cavity is matched with the lower half cavity to form a die cavity used for forming a target hinge forge piece. The lower flash bridge is annularly arranged at the bottom of the containing cavity, the lower half cavity is located in the lower flash bridge, and the lower flash bridge is further matched with the side wall of the containing cavity to form an annular groove. The upper flash bridge is annularly arranged on the boss, the upper half cavity is located in the upper flash bridge, the boss is used for abutting against the side wall of the containing cavity so that the boss can be matched with the annular groove to form a flash groove used for forming a target hinge forge piece, and the upper flash bridge can be matched with the lower flash bridge to form a channel communicating with the flash groove and the mold cavity.

Description

Technical Field

[0001] This application belongs to the automotive field, and in particular relates to a molding die for an automotive door hinge. Background Technology

[0002] As a key component connecting the car door to the vehicle body, the quality and performance of automotive door hinges directly affect the safety, comfort, and durability of the vehicle. Door hinges not only need to withstand frequent opening and closing operations but also must maintain stable connection performance under various extreme environments. Therefore, automotive door hinges are often designed with complex structures, including multiple precision mating and load-bearing surfaces to meet stringent mechanical performance and safety requirements. However, this complex structure presents significant challenges to door hinge molding. Traditional mold designs often struggle to accommodate the multi-curved and multi-angular structural characteristics of door hinges, leading to uneven material flow during molding. This can result in incomplete filling, material shortages, folding, and stress concentration, affecting not only the product's appearance but also potentially reducing its mechanical properties and service life. Therefore, it is necessary to solve these technical problems. Utility Model Content

[0003] The purpose of this application is to provide a molding die for automotive door hinges to solve the technical problem of high difficulty in molding automotive door hinges in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide an automotive door hinge forming mold, comprising:

[0005] The lower mold forms a receiving cavity and a lower half-cavity is formed on the bottom wall of the receiving cavity;

[0006] The upper mold forms a boss that can extend into the receiving cavity and forms an upper half cavity on the boss. The upper half cavity cooperates with the lower half cavity to form a mold cavity for forming the target hinge forging.

[0007] The lower edge bridge is arranged around the bottom of the receiving cavity and the lower half cavity is located inside the lower edge bridge. The lower edge bridge also cooperates with the side wall of the receiving cavity to form an annular groove.

[0008] An upper flash bridge is arranged around the boss, and the upper cavity is located inside the upper flash bridge. The boss is used to abut against the side wall of the receiving cavity so that the boss cooperates with the annular groove to form a flash groove for forming the target hinge forging, and the upper flash bridge cooperates with the lower flash bridge to form a channel connecting the flash groove and the mold cavity.

[0009] Optionally, the bottom wall undulation shape of the annular groove is adapted to the edge contour undulation shape of the lower half cavity, and the boss is used to adapt the surface shape of the surface facing the annular groove to the bottom wall shape of the annular groove.

[0010] Optionally, the upper fly-edge bridge and the lower fly-edge bridge are shaped to fit together and are used to form a uniform spacing.

[0011] Optionally, an overflow port communicating with the annular groove is formed on the lower mold.

[0012] Optionally, the root of the boss forms an arc-shaped first circular transition portion.

[0013] Optionally, the boss is formed with rounded corners to facilitate its entry into the receiving cavity.

[0014] Optionally, the lower mold is used to form an arc-shaped second circular arc transition portion at the corner of the annular groove.

[0015] The beneficial effects of the automotive door hinge forming mold provided in this application are as follows: Compared with the prior art, in the automotive door hinge forming mold provided in this application, the lower mold and upper mold, in addition to forming the mold cavity through the cooperation of the lower half cavity formed on the bottom wall of the receiving cavity and the upper half cavity formed on the boss, also form a flash groove through the boss and the annular groove, and form a channel connecting the flash groove and the mold cavity through the upper flash bridge and the lower flash bridge. In this way, during the forging process of the target hinge forging, the material can be fully enclosed in the mold cavity to ensure that all curved surfaces and edges on the target hinge forging can form good forming quality. At the same time, the excess material after filling can enter the flash groove through the channel between the upper flash bridge and the lower flash bridge and be removed later. Therefore, the automotive door hinge forming mold provided in this application can significantly reduce the forming difficulty of automotive door hinges, which is far superior to the prior art. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the automotive door hinge forming mold in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the overall structure of the lower mold in an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the overall structure of the upper mold in the embodiments of this application;

[0020] Figure 4 This is a cross-sectional view of the overall structure of the automotive door hinge forming mold in the embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the overall structure of the target hinge forging in the embodiments of this application.

[0022] In the figure, the following reference numerals are used: 100, lower mold; 101, receiving cavity; 102, lower half cavity; 103, annular groove; 104, overflow port; 105, second arc transition part; 200, upper mold; 201, boss; 202, upper half cavity; 203, first arc transition part; 204, fillet; 300, mold cavity; 400, lower flash bridge; 500, upper flash bridge; 600, flash groove; 1000, target hinge forging. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Please refer to the following: Figures 1 to 5 The automotive door hinge forming mold provided in this application embodiment will now be described. The automotive door hinge forming mold includes a lower mold 100, an upper mold 200, a lower flash bridge 400, and an upper flash bridge 500. Wherein:

[0028] The lower die 100 forms a receiving cavity 101 and a lower half-cavity 102 is formed on the bottom wall of the receiving cavity 101; the upper die 200 forms a boss 201 that can extend into the receiving cavity 101 and forms an upper half-cavity 202 on the boss 201. The upper half-cavity 202 cooperates with the lower half-cavity 102 to form a mold cavity 300 for forming the target hinge forging 1000; the lower flash bridge 400 is arranged around the bottom of the receiving cavity 101 and the lower half-cavity 102 is located inside the lower flash bridge 400. The lower flash bridge 400 also cooperates with the side wall of the receiving cavity 101 to form an annular groove 103; the upper flash bridge 500 is arranged around the boss 201. The upper cavity 202 is located inside the upper flash bridge 500. The boss 201 is used to abut against the side wall of the receiving cavity 101 so that the boss 201 cooperates with the annular groove 103 to form a flash groove 600 for forming the target hinge forging 1000. The upper flash bridge 500 cooperates with the lower flash bridge 400 to form a channel connecting the flash groove 600 and the mold cavity 300. At the same time, the abutment between the outer peripheral wall of the boss 201 and the side wall of the receiving cavity 101 also forms a locking structure, which effectively avoids the lower mold 100 and the upper mold 200 from misalignment during the forming process, and further improves the forming quality of the target hinge forging 1000.

[0029] According to the structure provided in this embodiment, in the automotive door hinge forming mold provided in this embodiment, the lower mold 100 and the upper mold 200, in addition to forming the mold cavity 300 through the cooperation of the lower half cavity 102 formed on the bottom wall of the receiving cavity 101 and the upper half cavity 202 formed on the boss 201, also form a flash groove 600 through the boss 201 and the annular groove 103, and form a channel connecting the flash groove 600 and the mold cavity 300 through the upper flash bridge 500 and the lower flash bridge 400. In this way, during the forging process of the target hinge forging 1000, the material can be fully enclosed in the mold cavity 300 to ensure that the various curved surfaces and edges on the target hinge forging 1000 can form good forming quality. At the same time, the excess material after filling can enter the flash groove 600 through the channel between the upper flash bridge 500 and the lower flash bridge 400 and be removed later. Therefore, the automotive door hinge molding die provided in this embodiment can significantly reduce the molding difficulty of automotive door hinges and ensure molding quality, which is far superior to the existing technology.

[0030] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The bottom wall undulation shape of the annular groove 103 is adapted to the edge contour undulation shape of the lower cavity 102, and the surface shape of the boss 201 facing the annular groove 103 is adapted to the bottom wall shape of the annular groove 103. According to the structure provided in this embodiment, the size of the flash groove 600 formed by the boss 201 and the annular groove 103 can better adapt to the shape change of the target hinge forging 1000. This can reduce the consumption of raw materials on the one hand, and effectively improve the forming quality of the target hinge forging 1000 on the other hand.

[0031] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The upper flash bridge 500 and the lower flash bridge 400 are shaped to fit together and form a uniform gap. According to the structure provided in this embodiment, the uniform gap between the upper flash bridge 500 and the lower flash bridge 400 facilitates the uniform outflow of excess material after molding and also makes subsequent flash removal easier. This further reduces the molding difficulty of the automotive door hinge and helps ensure the lifespan of the upper flash bridge 500 and the lower flash bridge 400, thereby extending the mold's service life.

[0032] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 An overflow port 104 connected to the annular groove 103 is formed on the lower mold 100. According to the structure provided in this embodiment, the overflow port 104 formed on the lower mold 100 and connected to the groove can allow excess waste material in the flash groove 600 to be discharged in time, avoiding mold blockage. This can significantly reduce the pressure in the mold cavity 300 or the flash groove 600 when there is too much raw material, ensuring the uniformity of the thickness of the target hinge forging 1000. This not only helps to improve the forming quality of the target hinge forging 1000, but also helps to significantly extend the service life of the automotive door hinge forming mold in this embodiment.

[0033] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The root of the boss 201 forms an arc-shaped first arc transition portion 203. According to the structure provided in this embodiment, the first arc transition portion 203 formed at the root of the boss 201 can effectively reduce the stress concentration of the upper mold 200, which is beneficial to further extend the service life of the automotive door hinge forming mold in this embodiment.

[0034] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5 The boss 201 has a rounded corner 204 formed on it to facilitate its entry into the receiving cavity 101. According to the structure provided in this embodiment, the rounded corner 204 formed on the boss 201 can not only reduce the stress concentration of the upper mold 200, but also make it easier for the boss 201 to enter the receiving cavity 101. It also facilitates the entry of lubricating material into the mating surface between the boss 201 and the receiving cavity 101, reducing wear. This helps to further reduce the molding difficulty of the automobile door hinge.

[0035] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 5The lower mold 100 is used to form an arc-shaped second arc transition portion 105 at the corner of the annular groove 103. According to the structure provided in this embodiment, the second arc transition portion 105 formed on the lower mold 100 can effectively reduce the stress concentration of the lower mold 100, which is beneficial to further extend the service life of the automotive door hinge forming mold in this embodiment.

[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automobile door hinge forming die characterized by comprising: include: The lower mold (100) forms a receiving cavity (101) and a lower half cavity (102) is formed on the bottom wall of the receiving cavity (101). The upper mold (200) forms a boss (201) that can extend into the receiving cavity (101) and forms an upper half cavity (202) on the boss (201). The upper half cavity (202) cooperates with the lower half cavity (102) to form a mold cavity (300) for forming the target hinge forging (1000). The lower edge bridge (400) is arranged around the bottom of the receiving cavity (101) and the lower half cavity (102) is located inside the lower edge bridge (400). The lower edge bridge (400) also forms an annular groove (103) with the side wall of the receiving cavity (101). The upper flash bridge (500) is circumferentially disposed on the boss (201) and the upper cavity (202) is located inside the upper flash bridge (500). The boss (201) is used to abut against the side wall of the receiving cavity (101) so that the boss (201) cooperates with the annular groove (103) to form a flash groove (600) for forming the target hinge forging (1000), and the upper flash bridge (500) cooperates with the lower flash bridge (400) to form a channel connecting the flash groove (600) and the mold cavity (300).

2. The automotive door hinge forming mold as described in claim 1, characterized in that: The bottom wall undulation shape of the annular groove (103) is adapted to the edge contour undulation shape of the lower half cavity (102), and the surface shape of the boss (201) facing the annular groove (103) is adapted to the bottom wall shape of the annular groove (103).

3. The automotive door hinge forming mold as described in claim 2, characterized in that: The upper fly edge bridge (500) and the lower fly edge bridge (400) are shaped to fit together and are used to form a uniform spacing.

4. The automotive door hinge forming mold as described in any one of claims 1-3, characterized in that: An overflow port (104) is formed on the lower mold (100) and is connected to the annular groove (103).

5. The automotive door hinge forming mold as described in claim 1, characterized in that: The root of the boss (201) forms an arc-shaped first arc transition portion (203).

6. The automotive door hinge forming mold as described in claim 1 or 5, characterized in that: The boss (201) has a rounded corner (204) to facilitate its entry into the receiving cavity (101).

7. The automotive door hinge forming mold as described in claim 1, characterized in that: The lower mold (100) is used to form an arc-shaped second arc transition part (105) at the corner of the annular groove (103).

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