Doghouse inclined ejector head mechanism of injection molding part

Abstract

The utility model discloses a doghouse inclined ejector head mechanism for an injection molded part. A preset number of doghouse inclined ejector head mechanisms are distributed on the edge of an injection molding station of an injection molded part product in an inclined ejector manner; the doghouse inclined top head mechanism comprises a doghouse main body structure, a connecting rib position and a positioning rib position, a doghouse forming cavity is formed in the doghouse main body structure, and connecting rib positions are arranged on the doghouse main body structure, so that connecting ribs are formed in corresponding positions of an injection molded part product formed by injection molding; and the positioning rib positions are arranged at the edges of the connecting rib positions, so that a preset number of positioning ribs are formed around the positioning ribs of the injection molded part product formed by injection molding. According to the technical scheme of the utility model, the structural strength of the product is improved, the possibility that the connecting ribs are strained in the cooling shrinkage process of the injection molded part product is reduced, the heat dissipation capability is enhanced, and the cooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of buffer structures, in particular to an inclined ejector pin mechanism for an injection molded doghouse part. Background Art

[0002] In the automotive structure, the doghouse structure usually refers to a specific component or design, and its name comes from its shape and function. This structure usually has the characteristics of being surrounded by three sides and having an opening on one side, so it is vividly called "doghouse". In automotive manufacturing, this structure may refer to the base of a fixed buckle, which is usually realized by an inclined ejector structure on the mold. It may be used to connect the wheel arch body to form a doghouse space, with assembly openings on the first side and the second side, and these openings are interconnected.

[0003] Currently, the root connecting rib of the doghouse structure of the existing injection molded part is directly connected to the injection molded part. The structure is simple and has no tensile resistance structure, so the structural strength is weak. It is easy to be damaged and whitened due to the shrinkage stress of the part during the mold opening, cooling and ejection processes, resulting in damage to the root of the doghouse structure and reducing the structural strength. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides an inclined ejector pin mechanism for an injection molded doghouse part. By setting positioning rib positions around the connecting rib position of the inclined ejector pin mechanism for the doghouse, positioning ribs are formed at the edges of the connecting ribs of the injection molded part product, improving the structural strength of the product, reducing the possibility of the connecting ribs being damaged during the cooling and shrinkage process of the injection molded part product, and thus improving the qualified rate of the product.

[0005] To achieve the above object, the utility model provides an inclined ejector pin mechanism for an injection molded doghouse part. A preset number of the inclined ejector pin mechanisms for the doghouse are distributed and inclinedly arranged at the edge of the injection molding station of the injection molded part product;

[0006] The inclined ejector pin mechanism for the doghouse includes: a doghouse main structure, a connecting rib position and a positioning rib position;

[0007] A doghouse forming cavity is formed inside the doghouse main structure, and the connecting rib position is arranged on the doghouse main structure, so that the injection molded part product formed by injection molding forms a connecting rib at the corresponding position;

[0008] The positioning rib position is arranged at the edge of the connecting rib position, so that the injection molded part product formed by injection molding forms a preset number of positioning ribs around the positioning rib.

[0009] In the above technical solution, preferably, the inclined ejector pin mechanism for the injection molded doghouse part further includes a straight ejector rib position, and the straight ejector rib positions are correspondingly distributed in the middle of the injection molding station of the injection molded part product, so that straight ejector fixing ribs are formed at the corresponding positions in the middle of the injection molded part product formed by injection molding.

[0010] In the above technical solution, preferably, the injection molded dog house angled lifter mechanism further includes a beryllium copper structure, and the beryllium copper structure is coated on the outer edge of the dog house main structure.

[0011] In the above technical solution, preferably, the positioning rib position and the connecting rib position are arranged in parallel, so that the positioning rib and the connecting rib are parallel to each other.

[0012] In the above technical solution, preferably, the dog house angled lifter mechanisms are respectively arranged on both side edges of the injection molding station in the shrinkage direction when the injection molded product is formed.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging a positioning rib position around the connecting rib position of the dog house angled lifter mechanism, positioning ribs are formed on the edge of the connecting rib of the injection molded product, improving the structural strength of the product, reducing the possibility of the connecting rib being strained during the cooling and shrinkage process of the injection molded product, and thus improving the qualified rate of the product. In addition, the beryllium copper structure can effectively take away the heat in the dog house forming cavity, enhancing the heat dissipation capacity and improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a front three-dimensional structural schematic diagram of an injection molded dog house angled lifter mechanism disclosed in an embodiment of the present utility model;

[0015] Figure 2 FIG. is a side three-dimensional structural schematic diagram of an injection molded dog house angled lifter mechanism disclosed in an embodiment of the present utility model;

[0016] Figure 3 FIG. is a schematic diagram of the installation position of an injection molded dog house angled lifter mechanism relative to an injection molded product disclosed in an embodiment of the present utility model;

[0017] Figure 4 FIG. is a schematic diagram of the installation direction of an injection molded dog house angled lifter mechanism relative to an injection molding station disclosed in an embodiment of the present utility model.

[0018] In the figure, the corresponding relationship between each component and the reference numeral is as follows:

[0019] 1. Dog house main structure, 2. Positioning rib position, 3. Dog house forming cavity, 4. Stitching line, 5. Ejector pin positioning pin hole, 6. Angled lifter bottom surface, 7. Connecting rib position, 8. Beryllium copper structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0021] The following further describes the present utility model in detail with reference to the accompanying drawings:

[0022] As Figure 1 and Figure 2 shown, according to an injection molded part doghouse angled ejector pin mechanism provided by the present utility model, a preset number of doghouse angled ejector pin mechanisms are distributed and angled ejector pins are arranged at the edge of the injection molding station of the injection molded part product;

[0023] The doghouse angled ejector pin mechanism includes: a doghouse main structure 1, a connecting rib position 7, and a positioning rib position 2;

[0024] A doghouse forming cavity 3 is formed inside the doghouse main structure 1, and a connecting rib position 7 is arranged on the doghouse main structure 1, so that a connecting rib is formed at the corresponding position of the injection molded part product formed by injection molding;

[0025] The positioning rib position 2 is arranged at the edge of the connecting rib position 7, so that a preset number of positioning ribs are formed around the positioning rib of the injection molded part product formed by injection molding.

[0026] In this embodiment, by arranging the positioning rib position 2 around the connecting rib position 7 of the doghouse angled ejector pin mechanism, positioning ribs are formed at the edge of the connecting rib of the injection molded part product, improving the structural strength of the product and reducing the possibility of the connecting rib being strained during the cooling and shrinkage process of the injection molded part product, thereby improving the qualified rate of the product.

[0027] Specifically, as Figure 3 shown, by arranging this doghouse angled ejector pin mechanism at the edge of the injection molding station of the injection molded part product, connecting ribs and positioning ribs are formed on the surface of the injection molded part product. The positioning ribs can resist the shrinkage centripetal force during the cooling and shrinkage process of the injection molded part product, help the connecting ribs resist the centripetal tension, and prevent the connecting ribs from being strained.

[0028] Among them, a ejector pin locating pin hole 5 is arranged on the angled ejector pin bottom surface 6 of the doghouse angled ejector pin mechanism for connecting and fixing the ejector pin, and the fixed ejector pin fixes this doghouse angled ejector pin mechanism at the corresponding position of the injection molding station.

[0029] Among them, the doghouse forming cavity 3 is formed by filling plastic to form a doghouse, which serves as the main structure of the doghouse angled ejector pin mechanism.

[0030] In the above-described embodiment, preferably, the injection molded part doghouse angled ejector mechanism further includes a straight ejector rib position, which is correspondingly and distributively arranged in the middle of the injection molding station of the injection molded part product, so that a straight ejector fixing rib is formed at the corresponding position in the middle of the injection molded part product formed by injection molding. The straight ejector fixing rib can resist the tensile force in the middle area of the injection molded part product during the cooling and shrinkage process, reduce the degree of shrinkage deformation of the injection molded part product, and prevent rib position damage during the ejection of the injection molded part product.

[0031] In the above-described embodiment, preferably, the injection molded part doghouse angled ejector mechanism further includes a beryllium copper structure 8, which is coated on the outer edge of the doghouse main structure 1, and a splicing line 4 is formed at the connection part between the beryllium copper structure 8 and the doghouse main structure 1. The beryllium copper structure 8 can effectively take away the plastic heat of the doghouse forming cavity 3, improve the cooling efficiency, and enhance the heat dissipation capacity.

[0032] In the above-described embodiment, preferably, the setting directions of the positioning rib position 2 and the connecting rib position 7 are parallel, so that the positioning rib and the connecting rib are parallel. The parallel positioning rib can effectively resist the tensile force of the connecting rib during the shrinkage deformation process of the injection molded part product, and reduce the possibility of deformation and damage of the connecting rib.

[0033] As Figure 3 and Figure 4 shown, in the above-described embodiment, preferably, the doghouse angled ejector mechanisms are respectively arranged on both side edges of the injection molding station in the shrinkage direction ( Figure 4 the direction indicated by the arrow in the figure) when the injection molded part product is formed. The possibility of deformation of the connecting rib in the shrinkage direction is higher. Therefore, it is necessary to arrange the doghouse angled ejector mechanisms on both sides in this direction to reduce the risk of rib damage.

[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An injection molded doghouse inclined ejector mechanism, characterized in that: A preset number of the doghouse inclined ejector head mechanisms are distributed and arranged at the edge of the injection molding station of the injection molding product; The doghouse inclined top head mechanism comprises: a doghouse main structure, connecting ribs and positioning ribs; A doghouse molding cavity is formed inside the doghouse main structure, and the connecting rib position is arranged on the doghouse main structure, so that the injection-molded product formed by injection molding forms connecting ribs at corresponding positions; The positioning ribs are arranged at the edges of the connecting ribs, so that a preset number of positioning ribs are formed around the positioning ribs by the injection-molded product.

2. The doghouse inclined ejector mechanism for injection molded parts according to claim 1, characterized in that: It also includes a straight top rib position, which is distributed and arranged correspondingly in the middle of the injection molding station of the injection molding product, so that a straight top fixing rib is formed at a corresponding position in the middle of the injection molding product formed by injection molding.

3. The injection molded doghouse inclined ejector mechanism according to claim 1 or 2, characterized in that: It also includes a beryllium copper structure, which is coated on the outer edge of the doghouse main structure.

4. The doghouse inclined ejector mechanism for injection molded parts according to claim 3, characterized in that: The positioning ribs and the connecting ribs are arranged in parallel directions, so that the positioning ribs are parallel to the connecting ribs.

5. The doghouse inclined ejector mechanism for injection molded parts according to claim 4, characterized in that: The doghouse inclined ejector mechanism is respectively arranged on the edges of both sides of the injection molding station in the shrinkage direction during molding of the injection molding product.

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