KR20030079167A - Method of producing a car stearing wheel rim using liquid pressure transfer and car stearing wheel rim produced thereby - Google Patents

Abstract

PURPOSE: A manufacturing method of a steering wheel rim using hydraulic transfer and the steering wheel rim manufactured by the method are provided to simplify the manufacturing process, reduce the cost, and form matched seams. CONSTITUTION: A manufacturing method of a steering wheel rim using hydraulic transfer includes steps of forming a transfer surface(12) by hydraulically transferring the surface of an article(S) to be transferred; masking a part of the transfer surface by using a masking member(M); removing the grease of a part on which masking is not performed; hydraulically transferring the degreased part again; and removing the masking member.

Description

METHOD OF PRODUCING A CAR STEARING WHEEL RIM USING LIQUID PRESSURE TRANSFER AND CAR STEARING WHEEL RIM PRODUCED THEREBY}

The present invention relates to a surface treatment technology of an advanced steering wheel rim for automobiles using hydraulic transfer, and more specifically, a pattern such as wood or metal to generate a seam that is matched to the surface of the steering wheel rim using a hydraulic transfer printing method. It is about how to print. In addition, the present invention relates to a steering wheel rim for a vehicle manufactured by such a hydraulic transfer method.

In general, most automotive steering wheel products use polyurethane foam as it is or cover the foam with leather.However, in the case of high-grade specifications, a part of the steering wheel rim is treated with a wood grain surface to make it compatible with general specifications. Differentiation is being attempted, and patterns such as wood, metal, carbon, marble and hairline are printed by a hydraulic transfer printing method.

In this regard, Korean Patent Laid-Open Publication No. 10-2000-19074 discloses a method of printing a hydrostatic transfer of a steering wheel rim. A transfer surface is formed to form a transfer surface, and a second masking member is covered on the transfer surface, and then the second unmasked portion of the second masking member is transferred to the surface. Matched joints are formed in two places. However, in the above method, since the transfer object, such as a round-shaped steering wheel rim, needs to be masked several times, the manufacturing process is complicated, requires a lot of cost, personnel, and time, and the line of the seam is constantly fixed due to two or more maskings. Not formed

On the other hand, as the material of the transfer body, as disclosed in the Republic of Korea Patent Publication No. 10-2000-19075, there is a conventional use of a foamed hard urethane, due to the nature of urethane foaming a large amount of foaming pores on the foam surface and inside There is a difficulty in surface treatment by hydraulic transfer due to swelling phenomenon caused by pores during product processing.

The present invention is a further improvement of the above-described prior art. The manufacturing process is simple and low by carrying out the hydraulic transfer of the transfer body without masking to form a transfer surface, and then performing the masking step, the degreasing step, and the hydraulic transfer step. It is an object of the present invention to provide a method of hydraulically transferring a steering wheel rim for an automobile in which a costly and time-consuming joint is generated, and a steering wheel rim for an automobile manufactured thereby.

1 is a view showing a steering wheel for a car that is the subject of the present invention,

2 is a view schematically showing a hydraulic pressure transfer device;

3A and 3B are a perspective view and a cross-sectional view of the transfer member of the hydraulic transfer dictionary,

4A and 4B are a perspective view and a cross-sectional view of the primary hydraulic transfer member;

5A and 5B are a perspective view and a cross-sectional view of the masked transfer body after the first hydraulic transfer;

6A and 6B are a perspective view and a cross-sectional view of the transfer target degreased after masking;

7 is a view showing a state in which the first transfer and masked the transferred surface according to the water pressure transfer method of the present invention to the second pressure transfer of the degreased transfer target.

8A and 8B are a perspective view and a cross-sectional view of the secondary hydraulically-transferred transfer member,

9A and 9B are a perspective view and a cross-sectional view of the transfer object with masking removed after the second hydraulic transfer;

(Explanation of drawing)

1: transfer object 2: transfer tank

3: guide chain 4: blower

5: pump 6: circulation tube

7: film conveying conveyor 8: film roll

9: heater roll 10: roll coater

11: withdrawal roll 12: primary transfer surface

13: secondary transfer surface

A: transfer subject S: transfer subject

F: Film W: Water

P: Pump D: Jig Frame

K: Activator M: Masking Member

In order to achieve the above object, according to the present invention, in the hydrostatic transfer method of a steering wheel rim for a vehicle, a process of forming a transfer surface by hydraulically transferring the surface of a transfer object, and using a masking member to determine the transfer surface Hydraulic pressure of the steering wheel rim for an automobile comprising a step of masking a part, a step of degreasing an unmasked part of the transfer surface, hydraulic transfer of the degreased part again, and a step of removing the masking member. Provide a transfer method.

In another aspect, the present invention provides a method for hydraulic transfer of a steering wheel rim for a vehicle in which the transfer body is a non-foamable hard urethane.

In another aspect, the present invention provides a method for hydraulic transfer of a steering wheel rim for a vehicle, wherein the masking member is a masking tape.

In addition, according to the present invention, a volatile solvent is used in the degreasing process, and the volatile solvent provides a method for hydraulic transfer of a steering wheel rim for an automobile selected from the group consisting of alcohol, normal nucleic acid, isopropyl alcohol, and solvent.

Finally, according to the present invention, there is provided a steering wheel rim for a vehicle manufactured by the above process.

Hereinafter, the configuration of the present invention will be described in more detail with reference to the drawings and examples.

First, FIG. 1 shows the shape of a steering wheel, which is a transfer object S, and FIG. 2 shows a schematic view of a hydraulic transfer apparatus implementing the method of the present invention. The hydraulic transfer method by this will be described as follows.

In Fig. 2, reference numeral 1 denotes a transfer device S, 2 a transfer tank, 7 to 11 a transfer film supply device, and a transfer tank 2 is a water transfer tank containing water W therein. The water surface of (2) flows slowly from the left side to the right side of FIG. 2 by the blower 4, and continues to circulate via the circulation pipe 6 by the pump 5. The transfer film F is rolled up on the film roll 8, a draw roll 11 for taking out the film from the film roll 8, a heater roll for heating the transfer film F from the film roll 8 ( 9) and the transfer by the roll coater 10 and the film conveying conveyor (7) to apply the active agent (K) which is located between the take-out roll 11 and makes the ink of the transfer film (F) printable It is moved above the water surface in the tank 2. The transfer film (F) is printed on one side of the water-soluble film fabric with a fixing ink, and the activator (K) is applied to the ink surface of the transfer film (F) to impart adhesion to the dry ink and transfer the transfer film. Make it as possible.

The transfer film F transferred onto the surface of the transfer tank 2 is gradually installed in the blower 4 and the transfer tank 2 at the same time as it gradually starts to bulge by the water W in the transfer tank 2. It moves from the left side to the right side of FIG. 2 by the guide chain 3 which moves from the left side to the right side of FIG. The transfer film (F) continues to squeeze during movement, and both ends of the film adhere to the guide chain (3) and move at the same speed as the guide chain (3). The pattern is to be in the state immediately before the destruction, at this time, the transfer target material (S) to be transferred by the transfer target transfer device (1) descends from the top to press the transfer film (F) by the force of the transfer film transfer device (1) Into the water (W), the ink is printed on the surface of the transfer target (S) by the stress generated in the water at this time.

Next, the hydraulic transfer method of the present invention will be described.

First, Figures 3a and 3b is a view showing the transfer body (S) of the steering wheel rim for the vehicle before the water pressure transfer is made and its cross section. Here, the transfer body (S) may be made of a foamed hard urethane or a resin injection molding as in the prior art, but if the transfer body (S) is a non-foamable hard urethane, a problem of the prior art in which a large number of foaming pores occur may be solved.

Hydraulic transfer is made according to the inherent properties of PVA (polyvinyl alcohol) fabric and the ink for printing on the hydraulic press, and according to the present invention, the transfer body S is made without being masked (primary transfer). Transfer) A transfer surface 12 is formed (FIGS. 4A and 4B), and a seam appears on the transfer surface 12 at this time. The transfer surface 12 is continuously subjected to the film removal, natural drying and water removal process.

Next, a masking member M such as a masking tape or a rubber jig is covered with a predetermined portion of the transfer surface 12 formed after the hydrostatic transfer (FIGS. 5A and 5B). Thereafter, a step of degreasing the unmasked portion of the transfer surface 12 is performed. Specifically, a volatile solvent, ie, an alcohol, normal nucleic acid, isopropyl alcohol, or a solvent such as solvent is applied to an appropriate amount of gauze or rag. Buried and lightly degreased. The transfer body S after the degreasing process is illustrated in FIGS. 6A and 6B, through which the seam formed during the first transfer is removed.

Next, the degreased portion is subjected to hydrostatic transfer (secondary transfer) again. This process is performed as shown in FIG. 7, and after this process, the secondary transfer surface 13 is formed. Matched joints are shown between the secondary transfer surface 12 and the secondary transfer surface 13 (FIGS. 8A and 8B). After the masking removal, film removal, drying, painting, coating drying process is made in order to complete the steering wheel rim as shown in Figure 9a and 9b.

Although the foregoing has been described with reference to specific embodiments of the present invention, it will be apparent that modifications and variations can be made without departing from the scope of the appended claims below. Therefore, the specification and drawings of the present invention should be understood to be illustrative rather than limiting, and the scope of protection of the present invention extends to the matters described in the claims and their equivalents.

According to the present invention, since the masking process, which has been performed twice in the prior art, can be shortened to one time, the conventional complex various manufacturing processes for forming a matched seam are drastically simplified and shortened. The price competitiveness can be secured by enabling mass production.

On the other hand, in the configuration of the steering wheel rim portion in which the hydraulic transfer is carried out, the conventional rigid urethane foaming method has a lot of pores due to the generation of pores due to the characteristics of urethane foaming, so in the present invention, the non-foamable rigid body of the transfer member The urethane material is applied to the steering wheel to solve the problems of the conventional foam type.

Claims (7)

In the hydraulic pressure transfer method of the steering wheel rim for a vehicle, Hydraulically transferring the surface of the transfer object to form a transfer surface; Masking a predetermined portion of the transfer surface by using a masking member; Degreasing the unmasked portion of the transfer surface; Hydraulically transferring the degreased portion again, and Hydraulic transfer method of the steering wheel rim for a vehicle, characterized in that it comprises a step of removing the masking member. The hydraulic transfer method of claim 1, wherein the transfer member is a non-foamable hard urethane. The hydraulic transfer method of claim 1, wherein the transfer member is a resin injection molding. The method of claim 1, wherein the masking member is a masking tape. The method of claim 1, wherein the degreasing step is carried out using a volatile solvent. The method of claim 5, wherein the volatile solvent is selected from the group consisting of alcohol, normal nucleic acid, isopropyl alcohol, and solvent. A steering wheel rim for an automobile, which is produced by the method of any one of claims 1 to 6.