Molding die for damping part of automobile armrest box

Abstract

The utility model discloses an automobile armrest box damping part forming mold, which relates to the field of injection molds, and adopts the technical scheme that the automobile armrest box damping part forming mold comprises an upper mold core and a lower mold core, a product cavity for forming a damping part is arranged between the upper mold core and the lower mold core, an upper mold core shaft is arranged on the upper mold core, and a lower mold core shaft is arranged on the lower mold core. The upper die core shaft and the lower die core shaft respectively extend into a product cavity and are matched with each other to be used for internal forming of a damping connecting part of a damping part, a tooth groove used for forming damping teeth of the damping connecting part is formed between the upper die core shaft and the lower die core shaft, and a chamfering forming part is arranged in the tooth groove in the lower die core shaft; the chamfer forming part is an inclined triangular surface, and the vertex angle of the triangular surface extends to the seam between the upper die mandrel and the lower die mandrel. The apex angle position of the chamfer of the formed damping tooth is in contact with the seam between the upper die mandrel and the lower die mandrel, and the damping tooth located at the chamfer position is not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, and more specifically, to a molding mold for a damping piece of an automobile armrest box. Background Art

[0002] A damping member is arranged between the box body and the box cover of the car armrest box, so that the box cover is rubbed from the side by the damping member when it is turned over, so that the box cover can be suspended. Figure 6 A damping member 9 is shown, which mainly includes a cylindrical damping connection part 91, and a plurality of damping teeth 911 are arranged in an array on the inner peripheral wall of the damping connection part 91, wherein the cross section of the damping tooth 911 is triangular, and both ends of the damping tooth 911 have chamfers respectively. The molding mold used to produce the damping member 9 in the prior art includes an upper mold core shaft 7 and a lower mold core shaft 8 for internal molding of the damping connection part 91. During demolding, the upper mold core shaft 7 first separates from the damping connection part 91, and the ejector pin 41 then ejects the damping member 9 from the mold to separate the damping connection part 91 from the lower mold core shaft 8. However, the inclined surface used for molding chamfers in the molding mold does not extend to the joint between the upper mold core shaft 7 and the lower mold core shaft 8, resulting in that when the upper mold core shaft 7 is separated from the lower mold core shaft 8, it is easy to cause damage to the damping teeth 911 at the joint position between the upper mold core shaft 7 and the lower mold core shaft 8, resulting in a low yield rate of the damping member 9.

[0003] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a forming die for a damping part of an automobile armrest box, in which the chamfered top angle of the damping tooth after forming contacts with the joint between the upper mold core shaft and the lower mold core shaft, has a smaller contact surface, and is not easy to damage the damping tooth at the chamfered position, which is beneficial to improving the production yield of the damping part.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a kind of automobile armrest damping part forming mold, including an upper mold assembly and a lower mold assembly, the upper mold assembly includes an upper mold core, the lower mold assembly includes a lower mold core, a product cavity for damping part molding is arranged between the upper mold core and the lower mold core, an upper mold core is arranged on the upper mold core, and a lower mold core is arranged on the lower mold core, the upper mold core and the lower mold core are respectively extended into the product cavity, and cooperate with each other for internal molding of the damping connection part of the damping part, a tooth groove for damping tooth molding of the damping connection part is arranged between the upper mold core shaft and the lower mold core shaft, a chamfering molding part is arranged in the tooth groove on the lower mold core shaft, and the chamfering molding part is an inclined triangular surface, and the vertex angle of the triangular surface extends to the joint between the upper mold core shaft and the lower mold core shaft.

[0006] In one embodiment, the end of the lower mold core shaft away from the product cavity is fixedly connected to the lower mold core, and a sliding cavity is provided on the upper mold core along the axial direction of the upper mold core shaft. The end of the upper mold core shaft away from the product cavity is slidably connected in the sliding cavity, and a limiting cap is fixed to the end of the upper mold core shaft located in the sliding cavity. A limiting block is provided at the end of the sliding cavity close to the cavity, and a spring is sleeved on the upper mold core shaft between the limiting cap and the limiting block.

[0007] In one embodiment, the upper mold assembly also includes an upper base plate and an upper mold frame fixedly connected to the upper base plate, and the upper mold core is embedded in the upper mold frame. The lower mold assembly also includes a lower base plate, a lower mold frame, and a square iron fixed between the lower base plate and the lower mold frame, and the lower mold core is embedded in the lower mold frame.

[0008] In one of the embodiments, an empty groove is formed between the bottom plate, the square iron and the lower mold frame, a ejector plate is slidably connected in the longitudinal direction in the empty groove, a stripping ejector is fixedly connected to the ejector plate, an ejector groove connected to the product cavity is penetrated by the lower mold frame and the lower mold core, and the end of the stripping ejector away from the ejector plate is slidably connected to the ejector groove.

[0009] In one of the embodiments, the upper mold assembly is provided with a flow channel connected to the product cavity.

[0010] In summary, the utility model has the following beneficial effects: the utility model sets a chamfered forming portion of a triangular surface, and the top angle of the triangular surface extends to the joint between the upper mold core shaft and the lower mold core shaft, so that the top angle position of the chamfer of the damping tooth after molding contacts with the joint between the upper mold core shaft and the lower mold core shaft, similar to the point-line contact method, with a smaller contact surface. When the upper mold core shaft and the lower mold core shaft are separated, the damping tooth located at the chamfered position is not easily damaged, which is beneficial to improving the production yield rate of the damping parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a forming die for a damping member of an automobile armrest box according to an embodiment of the present application;

[0012] Figure 2 This is a schematic diagram of the internal structure of a forming mold for a vehicle armrest box damping member according to an embodiment of the present application;

[0013] Figure 3 This is a schematic structural diagram of an upper mold core shaft and a lower mold core shaft in a molding die for a damping member of an automobile armrest box according to an embodiment of the present application;

[0014] Figure 4 for Figure 3 A magnified view of part A in FIG.

[0015] Figure 5This is a schematic structural diagram of a limit cap, a limit block, a sliding cavity and a spring in a forming die of a damping member of an automobile armrest box according to an embodiment of the present application;

[0016] Figure 6 It is a schematic diagram of the structure of the damping element.

[0017] In the figure: 1. upper mold assembly; 1a. upper base plate; 1b. upper mold frame; 2. lower mold assembly; 21. lower mold frame; 22. square iron; 23. lower base plate; 3. runner; 4. ejector plate; 41. ejector pin; 5. upper mold core; 51. sliding cavity; 52. limit block; 6. lower mold core; 7. upper mold core; 71. tooth groove; 72. limit cap; 8. lower mold core; 81. chamfering forming part; 9. damping member; 91. damping connecting part; 911. damping tooth. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figures 1 to 6 As shown, the embodiment of the present application provides a mold for forming a damping member of an automobile armrest box, comprising an upper mold assembly 1 and a lower mold assembly 2, wherein the upper mold assembly 1 comprises an upper mold core 5, and the lower mold assembly 2 comprises a lower mold core 6, and a product cavity for forming a damping member 9 is arranged between the upper mold core 5 and the lower mold core 6. An upper mold core shaft 7 is arranged on the upper mold core 5, and a lower mold core shaft 8 is arranged on the lower mold core 6. The upper mold core shaft 7 and the lower mold core shaft 8 are respectively extended into the product cavity, and cooperate with each other for internal molding of a damping connection part 91 of the damping member 9, and a tooth groove 71 for molding a damping tooth 911 of the damping connection part 91 is arranged between the upper mold core shaft 7 and the lower mold core shaft 8, and a chamfering molding part 81 is arranged in the tooth groove 71 located on the lower mold core shaft 8, and the chamfering molding part 81 is an inclined triangular surface, and the vertex angle of the triangular surface extends to the joint between the upper mold core shaft 7 and the lower mold core shaft 8.

[0020] In the above method, a chamfered forming portion 81 of a triangular surface is provided, and the apex angle of the triangular surface extends to the joint between the upper mold core shaft 7 and the lower mold core shaft 8, so that the chamfered apex angle position of the damping tooth 911 after molding is in contact with the joint between the upper mold core shaft 7 and the lower mold core shaft 8, similar to the point-line contact method, with a smaller contact surface. When the upper mold core shaft 7 and the lower mold core shaft 8 are separated, the damping tooth 911 located at the chamfered position is not easily damaged, which is beneficial to improving the production yield of the damping member 9.

[0021] In this embodiment, the end of the lower mold core shaft 8 away from the product cavity is fixedly connected to the lower mold core 6, and a sliding cavity 51 is provided on the upper mold core 5 along the axial direction of the upper mold core shaft 7. The end of the upper mold core shaft 7 away from the product cavity is slidably connected in the sliding cavity 51, and a limiting cap 72 is fixed to the end of the upper mold core shaft 7 located in the sliding cavity 51. A limiting block 52 is provided at the end of the sliding cavity 51 close to the cavity, and a spring is sleeved on the upper mold core shaft 7 between the limiting cap 72 and the limiting block 52.

[0022] Through the above arrangement, when the upper mold assembly 1 just begins to separate from the lower mold assembly 2, under the buffering action of the spring, the upper mold core shaft 7 will separate from the damping connection part 91 with a small and flexible force. When the upper mold assembly 1 finally separates from the lower mold assembly 2, the spring is completely compressed. Under the action of the limit block 52 and the limit cap 72, the upper mold core shaft 7 finally separates from the damping connection part 91 with a rigid force. This makes the demolding process flexible in the initial stage, and it is not easy to cause damage to the damping member 9.

[0023] In this embodiment, the upper mold assembly 1 further includes an upper bottom plate 1a and an upper mold frame 1b fixedly connected to the upper bottom plate 1a, the upper mold core 5 is embedded in the upper mold frame 1b, the lower mold assembly 2 further includes a lower bottom plate 23, a lower mold frame 21, and a square iron 22 fixed between the lower bottom plate 23 and the lower mold frame 21, and the lower mold core 6 is embedded in the lower mold frame 21. It should be noted that other detailed structures of the upper mold assembly 1 and the lower mold assembly 2 adopt the existing technology and are not described in detail in this embodiment.

[0024] In this embodiment, an empty groove is formed between the bottom plate, the square iron 22 and the lower mold frame 21, and a pin plate 4 is slidably connected in the empty groove along the longitudinal direction. A stripping pin 41 is fixedly connected to the pin plate 4. An ejector groove connected to the product cavity is provided through the lower mold frame 21 and the lower mold core 6, and the end of the stripping pin 41 away from the ejector plate 4 is slidably connected to the ejector groove.

[0025] In this embodiment, the upper mold assembly 1 is provided with a flow channel 3 communicating with the product cavity. The flow channel 3 is used to inject plastic raw materials.

[0026] Working principle: During demolding, the upper mold assembly 1 and the lower mold assembly 2 are disengaged, and the upper mold core shaft 7 is driven by the upper mold assembly 1 to separate from the damping connection part 91, and the ejector plate 4 drives the ejector pin 41 to rise, so that the damping connection part 91 is separated from the lower mold core shaft 8, and finally the damping part 9 is completely separated from the lower mold assembly 2.

[0027] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A mold for forming a damping member of an automobile armrest box, comprising an upper mold assembly (1) and a lower mold assembly (2), wherein the upper mold assembly (1) comprises an upper mold core (5), and the lower mold assembly (2) comprises a lower mold core (6), and a product cavity for forming a damping member (9) is provided between the upper mold core (5) and the lower mold core (6), wherein: An upper mold core (7) is provided on the upper mold core (5), and a lower mold core (8) is provided on the lower mold core (6). The upper mold core (7) and the lower mold core (8) are respectively extended into the product cavity and cooperate with each other for internal molding of the damping connection part (91) of the damping member (9). A tooth groove (71) for molding the damping teeth (911) of the damping connection part (91) is provided between the upper mold core shaft (7) and the lower mold core shaft (8). A chamfering molding part (81) is provided in the tooth groove (71) on the lower mold core shaft (8). The chamfering molding part (81) is an inclined triangular surface, and the top angle of the triangular surface extends to the joint between the upper mold core shaft (7) and the lower mold core shaft (8).

2. The automobile armrest damping component forming mold according to claim 1, characterized in that: The end of the lower mold core shaft (8) away from the product cavity is fixedly connected to the lower mold core (6); a sliding cavity (51) is provided on the upper mold core (5) along the axial direction of the upper mold core shaft (7); the end of the upper mold core shaft (7) away from the product cavity is slidably connected in the sliding cavity (51); a limiting cap (72) is fixed to the end of the upper mold core shaft (7) located in the sliding cavity (51); a limiting block (52) is provided at the end of the sliding cavity (51) close to the cavity; and a spring is sleeved on the upper mold core shaft (7) between the limiting cap (72) and the limiting block (52).

3. The automobile armrest damping component forming mold according to claim 1, characterized in that: The upper mold assembly (1) further comprises an upper base plate (1a) and an upper mold frame (1b) fixedly connected to the upper base plate (1a); the upper mold core (5) is embedded in the upper mold frame (1b); the lower mold assembly (2) further comprises a lower base plate (23), a lower mold frame (21) and a square iron (22) fixed between the lower base plate (23) and the lower mold frame (21); and the lower mold core (6) is embedded in the lower mold frame (21).

4. The automobile armrest damping component forming mold according to claim 3, characterized in that: An empty slot is formed between the bottom plate, the square iron (22) and the lower mold frame (21), an ejector plate (4) is slidably connected in the longitudinal direction in the empty slot, a stripping ejector (41) is fixedly connected to the ejector plate (4), an ejector slot communicating with the product cavity is penetrated through the lower mold frame (21) and the lower mold core (6), and one end of the stripping ejector (41) away from the ejector plate (4) is slidably connected to the ejector slot.

5. The automobile armrest damping component forming mold according to claim 1, characterized in that: The upper mold assembly (1) is provided with a flow channel (3) which is in communication with the product cavity.

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