TWI611913B - Wheel rim forming method - Google Patents

Description

Wheel rim forming method

The invention relates to a method for forming a wheel rim, in particular to a wheel rim capable of producing light weight and sufficient strength, and which can effectively reduce the production cost.

For a wheel rim on a vehicle such as a general automobile, a truck, or a linked vehicle, the utility model mainly comprises a radial recessed annular mounting wall, and the first supporting portion and the second supporting portion are provided on both sides of the mounting wall, and An intermediate portion is connected between the first and second receiving portions, and a first protruding portion is formed between the first receiving portion and the intermediate portion, and a second receiving portion and the intermediate portion form a a second stop that protrudes. When the tire is sleeved on the outer circumference of the rim, the bead on one side of the tire is locked and limited between the side wall of the first receiving portion and the first stopping portion, and the bead of the other side of the tire is locked and limited. Between the side wall of the second receiving portion and the second stopping portion.

With the above structure, sufficient support and cushioning force can be provided after the vehicle is advanced after inflation. However, in order to make the rim have sufficient strength, the current rims are mostly made of aluminum alloy after casting, which is not only expensive to manufacture and process, but also has a considerable weight, which will increase the driving speed. Fuel consumption.

In view of the above, in order to provide a structure different from the conventional technology and to improve the above disadvantages, the inventors have accumulated many years of experience and continuous development and improvement, and the present invention has been produced.

An object of the present invention is to provide an inner wheel formed by forming at least one fiber layer The method of forming a circle and the surface of the inner rim combined with an outer layer of the wheel rim can solve the problem of high manufacturing cost of the conventional wheel rim and increase the fuel consumption due to heavy weight. It can be reduced before it has sufficient strength, which can effectively reduce production costs and save energy costs.

For the above purposes, the method for forming a wheel rim according to the present invention comprises the steps of: a. providing an inner rim having an annular mounting wall; b. positioning at least one female mold on the mounting wall of the inner rim Above the surface, the inner surface of the female mold has a concave first stop shape and a second stop shape, and forms a gap between at least one female mold and the mounting wall; and c. is poured into a flowable The resin fills the gap to bond the resin to the surface of the mounting wall, and forms a coating layer having a first stopper portion and a second stopper portion.

In practice, the inner rim of step a is a pressurization of at least one resin-containing fiber layer, and after the fiber layer is molded and the resin is hardened.

When implemented, the present invention further includes a step of providing a rim and coating the surface of the rim with a plastic material to harden the plastic material to form at least one master mold and to have the first surface of the inner surface of the female mold. The shape of the stop and the shape of the second stop.

In implementation, the rim is a metal rim, and the outer surface of the rim has a first stop and a second stop that are annularly convex.

When implemented, the above plastic material is a resin-containing fiber layer.

In order to further understand the present invention, the specific embodiments of the present invention and the effects achieved thereby are described in detail below with reference to the drawings and drawings.

1‧‧‧ wheel rim

2‧‧‧Inner rim

21‧‧‧Installation wall

211‧‧‧ First Support Department

212‧‧‧ middle part

213‧‧‧ Second Support Department

214‧‧‧Fiber layer

3‧‧‧Overcoat

31, 51‧‧‧ first stop

32, 52‧‧‧ second stop

4‧‧‧ tires

41, 42‧‧ ‧ fetal lips

43‧‧‧Inflatable space

5‧‧‧ rims

6‧‧‧Female model

7‧‧‧ gap

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view showing the appearance of a wheel rim according to a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of a wheel rim of a preferred embodiment of the present invention.

Figure 3 is a partial enlarged view of a portion of Fig. 2a.

Fig. 4 is a view showing a state of use of a wheel rim according to a preferred embodiment of the present invention.

Fig. 5 is an exploded view of the rim and the master of the present invention.

Figure 6 is a cross-sectional view showing the combination of the c step of the present invention in forming an outer coating layer.

The present invention is a method of forming a wheel rim, wherein, as shown in FIGS. 1 to 3, the wheel rim 1 has an inner rim 2, and the inner rim 2 has a radial recess around the central axis. The annular mounting wall 21 includes a first receiving portion 211, an intermediate portion 212 and a second receiving portion 213. The first receiving portion 211 and the second receiving portion 213 are respectively located at the mounting wall 21. The two sides are located between the first receiving portion 211 and the second receiving portion 213. An outer covering layer 3 is coupled to the surface of the mounting wall 21. The outer surface of the outer covering layer 3 has an annular protrusion and a first stopping portion 31, and a second stopping portion 32. The first stopping portion 31 is located. Between the first receiving portion 211 and the intermediate portion 212, the second stopping portion 32 is located between the second receiving portion 213 and the intermediate portion 212.

Thereby, as shown in FIG. 4, when the tire 4 having a U-shaped cross section and opening toward the central axis is mounted, the bead (41, 42) on both sides of the tire 4 are pressed against the outer cover 3, respectively. The surface of the tire 4 is clamped to the side of the first receiving portion 211 and the first stopping portion 31, and the bead 42 of the other side of the tire 4 is locked and limited. Between the side wall of the second receiving portion 213 and the second stopping portion 32, a sealed inflatable space 43 is defined between the tire 4 and the outer covering layer 3.

The forming method 1 of the present wheel rim includes the following steps:

a. An inner rim 2 having an annular mounting wall 21 is provided.

b. positioning at least one female die 6 above the surface of the mounting wall 21, wherein the inner surface of the female die 6 has a shape of a recessed first stop portion 31 and a second stop portion 32, and at least one female die 6 A gap 7 is formed between the mounting wall 21.

c. The flowable resin is poured to fill the gap 7, and the resin is hardened and bonded to the surface of the mounting wall 21, and the coating layer 3 having the first stopper portion 31 and the second stopper portion 32 is formed.

Wherein, the inner rim 2 of the step a is preferably a plurality of overlapping carbon fiber layers 214 pre-impregnated resin, and then formed by press molding and then hardening the resin; in practice, the inner rim 2 may also be a A resin is added to the carbon fiber layer 214 to cure the resin, or a plurality of carbon fiber layers 214 are overlapped, and then a resin is added to cure the resin. The carbon fiber layer 214 is woven by a plurality of carbon fibers. When implemented, the fiber layer 214 may also be a combination of rayon or unidirectional fibers such as a plurality of glass fibers, quartz fibers, nylon fibers, cotton fibers or kewei fibers.

Step b further includes a step, as shown in FIG. 5, first providing a rim 5, and coating the surface of the rim 5 with a plastic material to harden the plastic material to form at least one female mold 6, the female mold The inner surface of 6 has a shape of a first stop portion 31 and a shape of a second stop portion 32. The rim 5 is a metal rim, and the outer surface of the rim 5 has a first stop portion 51 and a second stop portion 52 which are annularly convex. The plastic material is a resin-containing fiber layer, and after being pressurized, the resin is hardened to form two butted master molds 6. When implemented, the master mold 6 can also be a machined metal mold.

In addition, the coating layer 3 is cured by a resin other than the step c, and the resin is preferably an unsaturated polyester resin, an epoxy resin, a vinyl ester resin, a phenol resin, a poly urethane, and a maleimide. A thermosetting resin such as a resin or a cyanate resin. As shown in FIG. 6, when the master mold 6 is positioned above the surface of the mounting wall 21, the resin fills the gap 7, and the resin is hardened to form the outer covering layer 3. Thereafter, the outer covering layer 3 has a ring shape, and the outer surface of the outer covering layer 3 has a first stopper portion 31 which is annularly convex and a second stopper portion 32 which is annularly convex, and the outer covering layer 3 The inner surface is tightly coupled to the surface of the mounting wall 21 to cover the first receiving portion 211, the intermediate portion 212, and the second receiving portion 213.

Therefore, the present invention has the following advantages:

1. The creation is formed by forming at least one fiber layer into an inner rim. Therefore, it can be lifted before having sufficient strength, effectively reducing the weight, reducing the fuel consumption when the vehicle is running, and saving material and processing cost.

2. The creation system is combined with a resin hardened coating layer on the surface of the inner rim of the fiber, and simultaneously forms the first stop portion and the second stop portion, thereby not only effectively positioning the fetal lips on both sides of the tire. And the surface of the rim can be fine and smooth to improve product quality.

3. The master mold of the present invention can be formed by hardening the resin in the fiber layer, thereby enabling rapid molding, weight reduction, and reduction of mold processing cost.

In summary, according to the above disclosure, the present invention can achieve the intended purpose, and provides a wheel rim which not only can produce light weight and sufficient strength, but also can improve product quality and effectively reduce production cost. The method of forming the wheel rim is extremely valuable for industrial use, and the invention patent application is filed according to law.

1‧‧‧ wheel rim

2‧‧‧Inner rim

21‧‧‧Installation wall

211‧‧‧ First Support Department

212‧‧‧ middle part

213‧‧‧ Second Support Department

3‧‧‧Overcoat

31‧‧‧First stop

32‧‧‧Second stop

Claims (5)

The invention relates to a method for forming a wheel rim, wherein the wheel rim has an inner rim, the inner rim has a radially recessed annular mounting wall, and the first support part and the second support part are respectively arranged on both sides of the mounting wall, An intermediate portion is connected between the receiving portion and the second supporting portion, and the outer surface of the mounting wall is combined with the outer covering layer, and the outer surface of the outer covering layer has a first stopping portion and a second stopping portion which are annularly convex. The first stopping portion is located between the first receiving portion and the intermediate portion, and the second stopping portion is located between the second receiving portion and the intermediate portion; and the molding method comprises the following steps: a. providing a ring Locating the inner rim of the wall; b. positioning at least one female mold over the surface of the mounting wall, the inner surface of the female mold having the shape of the first stop portion recessed and the shape of the second stop portion, and Forming a gap between the at least one female mold and the mounting wall; and c. filling a flowable resin to fill the gap, hardening the resin and bonding to the surface of the mounting wall, and molding the first The outer covering layer of the stopping portion and the second stopping portion. The method for molding a wheel rim according to claim 1, wherein the inner rim of the step a is a pressurization of at least one resin-containing fiber layer, and after the fiber layer is formed and the resin is hardened. . The method for forming a wheel rim according to claim 1 or 2, further comprising a step of providing a rim, the outer surface of the rim having a first stop and a second stop a stopper portion, and a plastic material is coated on the surface of the rim, the plastic material is hardened to form the at least one master mold, and the inner surface of the master mold has a shape of the first stop portion recessed and the first portion The shape of the second stop. The method of forming a wheel rim according to claim 3, wherein the rim is a metal rim. The method of forming a wheel rim according to claim 3, wherein the plastic material is a resin-containing fiber layer.