TWI555591B - The tooling and manufacturing process of curvature hollow composite structure tube - Google Patents

Description

Curved pipe mold structure and composite material bending pipe manufacturing method thereof

The invention discloses a curved pipe mold structure and a composite material bending pipe manufacturing method thereof, which achieves a hollow curved pipe structure by a mold redesign and a process modification thereof.

The existing commercially available curved hollow composite structural pipe fittings can only be made into a liner by using a balloon or a dissolvable salt, and then the fiber prepreg is laminated on a hot pressing or blowing forming process, or the fiber cloth is overlaid and then transferred to a resin. Forming process and other methods to make structural pipe fittings. In both methods, the inner liner forming module must be prepared to prepare the inner tank of the airbag or the dissolvable salt, and the subsequent prepreg or the fiber stack is easily formed into a mold when the mold is laminated, resulting in inaccurate appearance and size of the part. Quality control is not easy, and it does not meet economic benefits in terms of cost and working hours.

In view of the above problems, the invention discloses a curved pipe mold structure and a composite material bending pipe manufacturing method thereof, which can improve the airtightness of the mold and avoid the possibility of leaking the bag and leaking gas by redesigning the mold airtight joint and improving the process thereof. In the process of injection, the pressure reduction method of the air bag can be used to increase the speed of the glue; and after the injection, the pressure-filling method of the air bag can increase the effect of impregnating the resin with the fiber.

In the prior art, if a composite hollow structural pipe member is to be produced, it can only be made into a liner by using a balloon or a dissolvable salt, and then the fiber prepreg can be laminated by a hot pressing or blowing forming process, or after being covered with a fiber cloth, the resin can be transferred to a resin. Forming process and other methods to make structural pipe fittings, molds and processmen The method is obviously complicated and difficult, the clamping mold and the quality are not easy to control, and the applicability is limited. The forming mold and the manufacturing process of the curved hollow composite structural pipe fitting of the invention are quite convenient and rapid to use, and the process rate, quality and yield are improved, and the invention is Deeply progressive, the composite hollow structural pipe fittings are high-load structural parts of general vehicles, which are necessary for the lightweight structure of the vehicle. Under the environmental awareness of energy saving and carbon reduction, pay attention to weight reduction and performance improvement. The hollow structural pipe fitting of the composite material produced by the invention can reduce the weight and enhance the toughness and performance of the structure, and has deep market value.

The invention has the advantages of a technology of technical and industrial value, and has a patent for the invention of a curved pipe mold structure and a composite material bending pipe manufacturing method thereof, an innovative mold and a process design, an increase in the convenience and speed of the process, and an improvement of the process quality and the yield. Application for protection and its value.

This Summary and the following detailed description and the accompanying drawings are intended to further illustrate the manner, the Other objects and advantages of the present invention will be described in the following description and drawings.

1‧‧‧ Ontology

11‧‧‧ first template

111‧‧‧Pumping holes

12‧‧‧ second template

121‧‧‧ accommodating space

122‧‧‧Ventilated holes

123‧‧‧Injection hole

31‧‧‧Inner pressure bag

32‧‧‧ core material

33‧‧‧Multi-layer fabric

Fig. 1 is a schematic view showing the structure of a curved pipe mold according to the present invention.

Fig. 2 is a schematic cross-sectional view showing the structure of a curved pipe mold of the present invention.

Figure 3 is a flow chart of a method for manufacturing a composite pipe bend according to the present invention.

The embodiments of the present invention are described below by way of specific examples, and those skilled in the art can understand the other advantages and advantages of the present invention from the disclosure.

Please refer to FIG. 1 and FIG. 2 , which are a curved pipe mold structure according to the present invention. The structure includes a body 1 having a first template 11 and a second template 12, and the first template 11 is disposed on one side thereof. The plurality of air vents 111 are provided with a plurality of injection ports 123 on the side of the second template 12, and the injection ports 123 are used to fill the colloid, and a plurality of gas filling holes 122 for filling the gas and the gas filling holes 122 are An airtight joint is formed, so that the composite fabric 33 attached to the inner pressure bag 31 is attached to the inner wall of the inner body, and when the first template 11 and the second template 12 are combined, a closed accommodating space 121 is formed; The core material 32 is used to attach a composite fabric 33 to the core material 32. An inner pressure bag 31 is disposed in the core material 32, and then the core material 32 is removed, and the composite material is removed. The fabric 33 and the inner pressure bag 31 are disposed in the accommodating space 121 of the body 1, and the inner pressure bag 31 is coupled to the plurality of gas venting holes 122, and the gas in the body 1 is extracted from the air venting hole 111, and then The filling hole 122 supports the multi-layer fabric 33 attached to the inner pressure bag 31, and is filled into the colloid by each of the injection ports 123, so that the complex The fabric is attached to the inner wall of the body 1. When the colloid is hardened, the purpose of making the bent pipe composite material is achieved.

Please refer to FIG. 3 , which is a method for manufacturing a composite material elbow according to the present invention, which is characterized in that a gel is applied to the surface of the composite material and the colloid is hardened to obtain a method for manufacturing a curved composite material, and the steps thereof include: Providing a body 1S11 having an accommodating space 121; providing a core material 32 and an inner pressure bag 31S12; attaching the inner pressure bag 31 to the core material 32 and attaching a core material to the core material 32 33, after the core material is removed, the composite fabric 33 and the inner pressure bag 31 are placed in the accommodating space 121, and the inner pressure bag 31 is coupled to the vent hole 122S14; The inside of the body 1 is evacuated, and the colloid is poured into the body 1 into the S15, so that the composite fabric 33 is attached with the colloid; and the composite fabric 33 is pressurized by the inner pressure bag 31; , the composite fabric 33 is attached to the inner wall S16 of the body 1, and when the colloid is hardened by S17, the composite material for bending is obtained. The purpose of S18.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, it is to be understood that equivalents or modifications may be made without departing from the spirit and scope of the invention. Equivalent changes and modifications made below are intended to be included within the scope of the invention.

1‧‧‧ Ontology

11‧‧‧ first template

111‧‧‧Pumping holes

12‧‧‧ second template

121‧‧‧ accommodating space

122‧‧‧Ventilated holes

123‧‧‧Injection hole

Claims (5)

A curved pipe mold structure, the structure comprising: a body having a first template and a second template, the first template side is provided with a plurality of air suction holes, and the second template side is provided with a plurality of gas filling holes and a plurality of injection ports When the first template and the second template are combined, a closed accommodating space is formed; a core material is used to attach a composite fabric sleeve to the core material, and an inner pressure bag is disposed on the core After the core material is removed, the composite material and the inner pressure bag are disposed in the accommodating space of the body, and the inner pressure bag is coupled to the plurality of gas venting holes, and the air venting hole is extracted by the air venting hole. The gas in the body is further attached to the inner pressure bag by the gas-filling hole, and the inner pressure bag presses the composite fabric to the inner wall of the body, and is filled into the colloid by each of the injection ports. The enamel fabric is attached to the inner wall of the body, and when the colloid is hardened, the purpose of making the bent pipe composite material is achieved. The elbow mold structure of claim 1, wherein the injection port is for filling a colloid. The elbow mold structure of claim 1, wherein the perforating hole is used for injecting a gas, and the composite material is attached to the inner wall of the body. The elbow mold structure of claim 1, wherein the gas filling hole is an airtight joint. The invention relates to a method for manufacturing a composite material elbow, which is characterized in that a colloid is poured on a surface of a composite material, and the colloid is hardened to obtain a method for manufacturing a curved pipe composite material, the steps comprising: providing a body having a receiving space; Providing a core material and an inner pressure bag; attaching the inner pressure bag to the core material and attaching the core material to a composite fabric, then extracting the core material and separating the composite fabric and the inner material The pressure bag is placed in the accommodating space, and the inner pressure bag is connected to the venting hole; the inside of the body is evacuated, and the colloid is poured into the body, so that the composite fabric is attached with the colloid; The composite fabric is inflated by the inner pressure bag, so that the composite fabric is attached to the inner wall of the body, and when the colloid is hardened, the purpose of making the curved composite material is achieved.