TW201441019A - Method to manufacture composite wheel rim and composite wheel rim - Google Patents

Abstract

A method to manufacture a composite wheel rim of the present invention includes steps of preparing a core, placing a composite material onto the core, placing the core with the composite material into a mold so that the composite material is located between the mold and the core, closing the mold, evacuating the mold and injecting resin into the mold via an injection hole so that the resin fills up apertures of the composite material, shaping the composite material into a wheel rim, opening the mold, and removing the mold and the core from the wheel rim. As a result, the composite material can absorb much resin, and the wheel rim is prevented from forming apertures.

Description

Composite rim manufacturing method and composite rim

The present invention relates to a method of manufacturing a composite rim and a composite rim.

The conventional method for manufacturing a composite rim, as disclosed in the patent TW I327533, is mainly impregnated with a carbon fiber material in a resin, the carbon fiber material is impregnated with a resin, and the pre-impregnated carbon fiber material is placed in a predetermined shape. In the mold, the carbon fiber material in the mold is then solidified into a rim by hot press forming.

However, the preparation method of such a prepreg resin has many disadvantages. First, a large amount of resin material must be prepared in order to fully pre-soak the carbon fiber material, and secondly, the amount of resin that can be immersed in the carbon fiber material taken out after pre-dipping is rather limited. Furthermore, the pre-impregnated carbon fiber material has to be taken out and then placed in a mold, or even attached to a mold core surface. The process of moving and the process of attaching are likely to cause a change in the shape of the carbon fiber material, thereby causing the original being The gaps filled by the resin appear again, or new gaps or holes appear, which affects the integrity and structural strength of the rim.

The main object of the present invention is to provide a method for manufacturing a composite rim and a composite rim, which can completely infiltrate the resin into the gap of the composite material and strengthen the strength of the rim.

In order to achieve the above object, the present invention provides a method of manufacturing a composite rim, The method comprises the following steps: A. preparing a core, attaching, winding or sheathing a composite material; B. placing the composite material together with the mold core into a mold, so that the composite material is located at the mold core and Between the inner surfaces of the mold, wherein the mold has at least one injection hole; C. closing the mold, vacuuming the inside of the mold and injecting resin into the mold from the injection hole to fill the composite with the resin a gap to shape the composite into a rim; D. opening the mold and disengaging the rim from the mold and the core.

The invention also provides a composite material rim, which is made of a composite material, wherein the composite material is placed in a mold between the mold and a mold core, and then the inside of the mold is vacuumed and from the mold A injection hole injects a resin into the inside of the mold, so that the resin fills the gap of the composite material, and the composite material with the resin is molded.

Therefore, the present invention directly fills and fills the composite material by injecting the resin into the mold, so that all the gaps and holes of the composite material are infiltrated by the resin, and at the same time, the molding is directly performed, and the formed rim does not have holes. The structural strength is very good.

S11‧‧‧Preparation of mold core and attached composite material

S12‧‧‧ placed in the mold

S13‧‧‧Capping, vacuuming, resin injection

S14‧‧‧Forming, mold opening, demoulding

S21‧‧‧ composite material placed in the mold, placed into the mold core

S22‧‧‧Capping, vacuuming, resin injection

S23‧‧‧Forming, mold opening, demoulding

1‧‧‧Model

2‧‧‧Composite

2'‧‧‧Rounds

3‧‧‧Mold

31‧‧‧ modules

311‧‧‧ injection hole

312‧‧‧ venting holes

32‧‧‧ modules

4‧‧‧Resin

Figure 1 is a flow chart of the steps of the present invention.

Figure 2 is a schematic illustration of the steps of placing a mold in accordance with the present invention.

Figure 3 is a schematic illustration of the sealing step of the present invention.

Figure 4 is a schematic illustration of the mold opening step of the present invention.

Figure 5 is a perspective view of a composite rim of the present invention.

Figure 6 is a flow chart showing the steps of the second embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to FIG. 1 , the present invention provides a method for manufacturing a composite rim, comprising the following steps:

A. Preparing a core and attaching a composite S11: preparing a core 1 and attaching, winding or sheathing a composite 2 to the core 1. In the main embodiment of the present invention, the core 1 is pre-formed with a water-soluble substance, and the outer contour of the core 1 corresponds to the inner contour of the rim to be formed, and the composite 2 is a carbon fiber cloth. The composite material 2 can be directly attached, wound or sleeved to the mold core 1 without previously performing the step of prepreg the resin.

B. Inserting the mold S12: placing the composite material 2 together with the core 1 into a mold 3, such that the composite material 2 is located between the mold core 1 and the inner surface of the mold 3, wherein the mold 3 has at least one Injection hole 311. In the main embodiment of the present invention, the mold 3 comprises two modules 31, 32, which can be combined and enclose a mold chamber, wherein the inner wall contour of the mold chamber corresponds to the shape to be formed. The outer contour of the rim is placed in the mold chamber 1 to which the core 2 to which the composite material 2 has been attached, as shown in FIG.

C. Molding, vacuuming, and injecting resin S13: as shown in FIG. 3, the mold 3 is closed, the inside of the mold 3 is evacuated, and the resin 4 is injected into the mold 3 from the injection hole 311 to make the resin 4 The gap of the composite material 2 is filled to form the composite material 2 into a rim. The mold 3 may have at least one air venting hole 312, and the air chamber of the mold cavity is vacuumed by the air venting hole 312, so that the air in the mold cavity is eliminated, and the injected resin 4 is also faster and more comprehensive. Infiltrating into every corner of the mold chamber, even every pore and gap of the composite material 2, Thereafter, the step of molding is performed to harden the composite 2 and the resin, and the mold 3 may be selectively heated to promote molding.

D. Forming, mold opening, demolding S14: as shown in FIG. 4, the rim 2' is formed, the mold is opened and the rim 2' is separated from the mold 3 and the core 1, more specifically, The two modules 31, 32 are separated from each other, the rim 2' is separated from the core 1 by the two modules 31, 32, and the core 1 is melted with water, so that the core 1 is detached from the rim 2 'Inside exclusion, that is, get the rim 2' finished product, as shown in Figure 5.

However, in another possible embodiment of the present invention, as shown in FIG. 6, the following steps may be included:

A. The composite material is placed in the mold and placed in the mold core S21: a composite material is placed in a mold, and then placed in a mold core, the composite material is located between the mold core and the mold, wherein the mold has at least A shot hole.

B. Sealing, vacuuming, and injecting resin S22: sealing the mold, vacuuming the inside of the mold, and injecting resin into the mold from the injection hole, so that the resin fills the gap of the composite material, so that the composite material is molded. For a round.

C. Forming, Molding, and Stripping S23: Opening the mold and disengaging the rim from the mold and the core.

The detailed implementation is similar to the first embodiment and will not be described again. The difference between the embodiment and the first embodiment is only that the composite material is attached to the mold core and placed in the mold or placed in the mold before the mold core is placed into the mold, but both of the composite materials are clamped. The result between the core and the inner wall of the mold.

By the above method, the present invention can provide a structural strength and surface integrity In the composite rim, since the composite material of the present invention is subjected to the prepreg resin step before being placed in the mold, the resin is injected after being placed in the mold, and the resin is impregnated into all the gaps of the composite by vacuum suction. The rear rim does not create holes, gaps, etc. The structure is very complete and the strength is excellent, there is no need to fill the soil and other steps, and the process can be shortened, the production efficiency is improved, and the effect is highly improved.

S11‧‧‧Preparation of mold core and attached composite material

S12‧‧‧ placed in the mold

S13‧‧‧Capping, vacuuming, resin injection

S14‧‧‧Forming, mold opening, demoulding

Claims (9)

A manufacturing method of a composite rim comprises the following steps: A. preparing a core, attaching, winding or sheathing a composite material; B. placing the composite together with the core into a mold, Between the core and the inner surface of the mold, wherein the mold has at least one injection hole; C. closing the mold, vacuuming the inside of the mold and injecting the inside of the mold from the injection hole a resin that fills the gap of the composite material to form the composite into a rim; D. opens the mold and disengages the rim from the mold and the core. The method of manufacturing a composite rim according to claim 1, wherein the core is made of a water-soluble substance, and the core is removed from the rim by water dissolution when the mold is opened. The method of manufacturing a composite rim according to claim 1, wherein the composite material is a carbon fiber cloth. The method for manufacturing a composite rim according to claim 1, wherein in the step C., the mold is injected after the resin is injected to mold the composite. A method for manufacturing a composite rim comprises the steps of: A. placing a composite into a mold, and then placing a core between the core and the mold, wherein the mold has At least one injection hole; B. sealing the mold, vacuuming the inside of the mold and injecting resin into the mold from the injection hole, so that the resin fills the gap of the composite material, so that the composite material is formed into a rim; C. Opening the mold and disengaging the rim from the mold and the core. The method of manufacturing a composite rim according to claim 5, wherein the core is made of a water-soluble substance, and the core is removed from the rim by water dissolution when the mold is opened. The method of manufacturing a composite rim according to claim 5, wherein the composite material is a carbon fiber cloth. The method for manufacturing a composite rim according to claim 5, wherein in the step C., the mold is injected after the resin is injected to mold the composite. A composite rim is made of a composite material, wherein the composite material is placed in a mold between the mold and a mold core, and then the inside of the mold is evacuated and a shot from the mold is taken. The hole injects a resin into the inside of the mold, so that the resin fills the gap of the composite material, and the composite material with the resin is molded.