Positioning pin for composite material mold

Abstract

The utility model relates to a positioning pin for a composite material mould, which comprises a plug-in part used for connecting an embedded part and a mould inserting part used for connecting the mould, the mould inserting part comprises a circular truncated cone part and a dome part arranged on the small end face of the circular truncated cone part, and the diameter of the end face, close to the circular truncated cone part, of the dome part is consistent with that of the small end face of the circular truncated cone part. The large end surface of the circular truncated cone part is connected with the plug-in part; during use, the mold inserting part is inserted into a positioning hole of a mold, the top of the round top part faces the hole bottom direction of the positioning hole, and the embedded part is inserted into the insert part. Through the arrangement of the circular truncated cone part and the dome part, the positioning pin can be conveniently assembled and disassembled in a mold, the demolding difficulty is reduced, and the yield of products is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material positioning, and particularly relates to a positioning pin for a composite material mold. Background Art

[0002] With the development of technology and the composite material industry, people have continuously put forward new requirements for the functions of composite materials. The traditional positioning of composite material embedded parts uses a cylindrical pin. Generally, a cylindrical hole is made in the mold and then the round pin column is connected to the embedded part. In this structure, the mold pin hole and the round pin column use a vertical method to insert the pin column into the pin hole. However, during the forming process of the composite material, there are multiple embedded part positions. Therefore, after the composite material is cured, it is difficult to demold the composite material product, and it is very easy to damage the product or the mold. For this reason, this application proposes a positioning pin for a composite material mold. Content of the Utility Model

[0003] Aiming at the problems of difficult demolding and easy damage to the finished product existing in the existing positioning pin during the production process of composite materials, the utility model proposes a positioning pin for a composite material mold to reduce the demolding difficulty. The specific technical solutions are as follows:

[0004] A positioning pin for a composite material mold includes a plug part for connecting an embedded part and a mold inserting part for connecting a mold. The mold inserting part includes a frustum part and a round top part provided on the small end surface of the frustum part. The diameter of the end surface of the round top part close to the frustum part is the same as that of the small end surface of the frustum part, and the large end surface of the frustum part is connected to the plug part. When in use, the mold inserting part is inserted into the positioning hole of the mold and the top of the round top part faces the bottom of the positioning hole, and the embedded part is inserted onto the plug part.

[0005] Further, the plug part is cylindrical.

[0006] Further, a limiting surface formed by cutting is also provided on the mold inserting part.

[0007] Further, the limiting surface is parallel to the axis of the frustum part, and the limiting surface is cut from the top of the round top part until the middle of the frustum part.

[0008] Further, there are two limiting surfaces, which are of the same size and are arranged in a plane.

[0009] The beneficial effects of the utility model are as follows:

[0010] By setting the frustum part and the round top part, it is convenient to install and disassemble the positioning pin in the mold, reduces the demolding difficulty, and is beneficial to improving the yield rate of products; by setting the limiting surface, it is ensured that the positioning pin does not shake when placed in the mold and is beneficial to the subsequent removal of the positioning pin from the product. Description of the Drawings

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 is a three-dimensional schematic diagram of a positioning pin for a composite material mold according to the present invention;

[0013] Figure 2 is a side view of a positioning pin for a composite material mold according to the present invention;

[0014] Figure 3 is a schematic diagram of the use of a positioning pin for a composite material mold according to the present invention.

[0015] In the figure: 1, mold inserting part; 1.1, limiting surface; 1.2, round top part; 1.3, frustum part; 2, plug-in part; 3, mold; 4, embedded part; 5, composite material ply. Detailed implementation manners

[0016] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0017] The present invention provides the following specific implementation schemes:

[0018] Such as Figures 1-3As shown in the figure, the utility model provides a positioning pin for a composite material mold, which includes a plug part 2 for connecting a pre-embedded part and a mold inserting part 1 for connecting a mold. The mold inserting part 1 includes a frustum part 1.3 and a round top part 1.2 arranged on the small end face of the frustum part 1.3. The end face of the round top part 1.2 close to the frustum part 1.3 has the same diameter as the small end face of the frustum part 1.3, and the large end face of the frustum part 1.3 is connected to the plug part 2. During use, the mold inserting part 1 is inserted into the positioning hole of the mold 3 and the top of the round top part 1.2 faces the bottom of the positioning hole, and the pre-embedded part 4 is inserted onto the plug part 2.

[0019] Preferably, the plug part 2 is cylindrical, which is convenient for connecting with the pre-embedded part, and the axis of the plug part 2 coincides with the axis of the frustum part 1.3.

[0020] Preferably, the mold inserting part 1 is also provided with a limiting surface 1.1 formed by cutting for restricting the rotation of the positioning pin.

[0021] Preferably, the limiting surface 1.1 is parallel to the axis of the frustum part 1.3, and the limiting surface 1.1 is cut from the top of the round top part 1.2 until the middle of the frustum part 1.3.

[0022] Preferably, there are two limiting surfaces 1.1, which are of the same size and arranged in a plane.

[0023] When manufacturing a composite material workpiece by means of an autoclave molding process and a vacuum curing furnace process, first, the mold inserting part 1 of the positioning pin is placed into the positioning hole reserved in the mold 3, and the large end face of the frustum part 1.2 is flush with the mold surface; then, according to the requirements of the process layup, the pre-embedded part 4 is inserted onto the plug part 2 of the positioning pin; subsequently, the composite material layup 5 is laid according to the layup sequence of the product and sent into an oven for curing and forming; after curing is completed, the product and the positioning pin are taken off the mold simultaneously, and finally, the positioning pin is taken out of the product.

[0024] By providing the frustum part 1.3 and the round top part 1.2, it is convenient for the installation and disassembly of the positioning pin in the mold 3, reduces the difficulty of demolding, and is beneficial to improving the qualified rate of products; by providing the limiting surface 1.1, it is ensured that the positioning pin does not shake when placed in the mold 3 and is beneficial to the subsequent removal of the positioning pin from the product.

[0025] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A positioning pin for a composite material mold, characterized in that: The invention comprises an inserting part (2) for connecting an embedded part and an inserting part (1) for connecting a mold, wherein the inserting part (1) comprises a truncated cone part (1.3) and a dome part (1.2) arranged on a small end face of the truncated cone part (1.3), wherein an end face of the dome part (1.2) close to the truncated cone part (1.3) has the same diameter as the small end face of the truncated cone part (1.3), and a large end face of the truncated cone part (1.3) is connected to the inserting part (2); when in use, the inserting part (1) is inserted into a positioning hole of a mold (3) with the top of the dome part (1.2) facing the bottom of the positioning hole, and the embedded part (4) is inserted into the inserting part (2).

2. A positioning pin for a composite material mold according to claim 1, characterized in that: The plug-in portion (2) is cylindrical.

3. A positioning pin for a composite material mold according to claim 1, characterized in that: The inserting die portion (1) is also provided with a limiting surface (1.1) formed by cutting.

4. A positioning pin for a composite material mold according to claim 3, characterized in that: The limiting surface (1.1) is parallel to the axis of the truncated cone portion (1.3), and the limiting surface (1.1) is cut from the top of the dome portion (1.2) to the middle of the truncated cone portion (1.3).

5. A positioning pin for a composite material mold according to claim 4, characterized in that: There are two limiting surfaces (1.1) which are of the same size and arranged in a plane.

Images