Rubber coating mold for lower limiting concave block of vehicle door

Abstract

The utility model discloses a rubber coating die for a lower limiting concave block of a vehicle door, which comprises an upper die and a lower die, and at least one cavity for producing the lower limiting concave block of the vehicle door is arranged between the upper die and the lower die. And elastic buffer pieces are detachably mounted at the positioning and pressing part of the upper die and the metal framework and the positioning and pressing part of the lower die and the metal framework. Therefore, the elastic buffer parts are detachably mounted at the positioning and pressing part of the upper die and the framework and the positioning and pressing part of the lower die and the framework, and only the forming part is reserved as a steel material, so that the problem that the metal framework is crushed is effectively solved, and the qualification rate is improved; and meanwhile, the matching strength with an injection molding part is also ensured, and only the elastic buffer piece needs to be disassembled and replaced after abrasion or elastic failure. And the problem of long maintenance time caused by abrasion of matched parts in the production process is effectively solved, the efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold for coating a lower limit recess of a car door with rubber. Background Technology

[0002] The lower limit recess of a car door is a crucial functional component for various sliding door systems, used for cushioning, shock absorption, noise reduction, positioning, and improving the user experience. It has very high requirements for appearance quality, performance, and lifespan. To prevent rust, the production process ensures that the protective coating on the metal frame is free from any pressure marks or leaks. Figure 1 and Figure 2 As shown, the component is injection molded from two materials: a metal frame 1 and TPE (also known as artificial rubber or synthetic rubber). Specifically, the lower limit recess of the car door includes a metal frame 1 and a shock-absorbing overlay 2 injection molded on it, wherein the shock-absorbing overlay 2 is made of TPE material.

[0003] Currently, the lower limit recess of the car door is made using an overmolding mold. The overmolding mold consists of an upper mold and a lower mold, and the surfaces where the upper and lower molds meet are called the parting surfaces. During this production process, the metal frame needs to come into frequent contact with the mold, pressing and sealing to seal the glue, and then injection molding the soft rubber shape of the lower limit recess of the car door. The existing overmolding mold body structure is made of a single piece of steel for both the upper and lower molds. In order to ensure strength and durability, quenched mold steel is used. Therefore, the tolerance of the metal frame itself is often damaged during the mold closing process, which reduces the pass rate and the rework cost is very high. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a mold for coating the lower limit recess of a car door.

[0005] This utility model proposes a mold for overmolding a lower limit recess of a car door, including an upper mold and a lower mold. At least one cavity for producing the lower limit recess of the car door is provided between the upper mold and the lower mold. Elastic buffers are detachably installed at both the positioning and pressing points of the upper mold and the metal frame and the positioning and pressing points of the lower mold and the metal frame.

[0006] Preferably, the elastic buffer is configured as an annular nylon insert.

[0007] Preferably, the annular nylon insert is detachably fixed to the parting surface of the upper mold and the lower mold by screws.

[0008] Preferably, the mold cavity is provided with two cavities. The lower end of the upper mold is provided with an upper punch and an upper die, and the upper end of the lower mold is provided with a lower die and a lower punch. The upper punch and the lower die form one cavity, and the upper die and the lower punch form the other cavity.

[0009] In summary, this utility model has the following beneficial effects: Elastic buffers are detachably installed at both the upper mold and the skeleton positioning and clamping point, and at the lower mold and the skeleton positioning and clamping point, with only the molding part remaining made of steel. This effectively solves the problem of the metal skeleton being damaged by pressure, improving the yield rate. Simultaneously, it ensures the fit strength with the injection-molded part; if wear or elasticity failure occurs, only the elastic buffer needs to be disassembled and replaced. This effectively solves the problem of long repair times due to wear at mating parts during production, improving efficiency and reducing production costs.

[0010] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0011] Figure 1 A three-dimensional view of the lower limit recess of the car door;

[0012] Figure 2 A schematic diagram of the metal skeleton structure of the lower limit recess of the car door;

[0013] Figure 3 This is a schematic diagram of the upper mold in an embodiment of the present invention;

[0014] Figure 4 This is a schematic diagram of the lower mold structure according to an embodiment of the present invention;

[0015] Figure 5 This is an exploded view of the left side injection molding structure and the right side of the lower mold in an embodiment of this utility model.

[0016] In the picture:

[0017] 1. Metal frame; 2. Shock-absorbing rubber coating; 3. Upper mold; 4. Lower mold; 5. Circular nylon insert; 6. Screws. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] like Figure 3-5 As shown, the present embodiment proposes a door lower limit recess rubber coating mold, including an upper mold 3 and a lower mold 4. At least one cavity for producing the door lower limit recess is provided between the upper mold 3 and the lower mold 4. Elastic buffers can be detachably installed at the positioning and pressing points of the upper mold 3 and the metal frame 1, and at the positioning and pressing points of the lower mold 4 and the metal frame 1.

[0020] In this way, elastic buffers can be detachably installed at the positioning and clamping points of the upper mold 3 and the metal frame 1, and at the positioning and clamping points of the lower mold 4 and the metal frame 1, leaving only the molding part made of steel. This effectively solves the problem of the metal frame 1 being damaged during mold closing, improving the yield rate. At the same time, it ensures the fit strength with the injection molding part; if wear or elasticity failure occurs, only the elastic buffer needs to be disassembled and replaced. This effectively solves the problem of long repair times due to wear at the mating parts during production, improving efficiency and reducing production costs.

[0021] Furthermore, the elastic buffer is designed as a ring-shaped nylon insert 5. Nylon (full name: Polyamide, abbreviated as PA), also known as polyamide fiber, is a general term for thermoplastic resins containing repeating amide groups (-NHCO-) ​​in their molecular chains. It has high mechanical strength, good toughness, and wear resistance. The ring-shaped nylon insert has a certain degree of elasticity, thus allowing for some adaptability to the thickness of the metal skeleton.

[0022] Furthermore, the annular nylon insert 5 is detachably fixed to the parting surface of the upper mold 3 and the lower mold 4 by screws 6. Therefore, the annular nylon insert 5 can be used as a spare part. If the elasticity of the annular nylon insert 5 fails during long-term production, it can be quickly repaired or replaced. Since the screws 6 are fixed from the parting surface, the inserts can be replaced separately without removing the mold from the machine. This effectively solves the problem of long repair time due to wear of mating parts during production, improves efficiency, and reduces production costs.

[0023] Among them, such as Figure 5 As shown, the mold has two cavities. The lower end of the upper mold 3 is equipped with an upper punch and an upper die, while the upper end of the lower mold 4 is equipped with a lower die and a lower punch. The upper punch and lower die form one cavity, and the upper die and lower punch form the other cavity. This two-cavity mold structure improves production efficiency.

[0024] It should be noted that in this embodiment, the cavity and the annular nylon insert 5 are located on the inner membrane of the overmolding mold (upper inner membrane, lower inner membrane).

[0025] It should be noted that the overmolding mold in this embodiment can first be modeled in 3D CAD / CAM / PROE / UG software, and then a CNC program can be written in CAM software. The entire shape of the ring-shaped nylon insert can be machined by computer numerical control according to the CNC program. Appropriate tooling fixtures and fixing structures can be selected, and finally the mold can be machined on a CNC machining center. The relevant structural parts of the positioning structure can be assembled and fitted.

[0026] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 utility model 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 utility model.

[0027] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rubber-coated mold for a lower-limiting recess block of a vehicle door, comprising an upper mold and a lower mold, characterized in that, At least one cavity for producing a lower-limiting concave block of a vehicle door is arranged between the upper die and the lower die, and an elastic buffer is detachably installed at the position where the upper die is positioned and pressed against the metal framework and at the position where the lower die is positioned and pressed against the metal framework.

2. The door lower limit block gluing mold according to claim 1, wherein, The elastic buffer is an annular nylon insert.

3. The door lower limit block gluing mold according to claim 2, wherein, The annular nylon insert is detachably fixed on the parting surface of the upper die and the lower die by screws.

4. The door lower check block encapsulation mold of claim 1, wherein, The cavity is provided with two cavities, the lower end of the upper die is respectively provided with an upper convex die and an upper concave die, the upper end of the lower die is respectively provided with a lower concave die and a lower convex die, the upper convex die and the lower concave die correspond to form one of the cavities, and the upper concave die and the lower convex die correspond to form the other cavity.

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