JP2002219536A - Method for manufacturing tubing article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve productivity, shaping degree of freedom and quality of products and to resolve the red tape of the parts management during manufacturing process in the method for manufacturing a tubing article completed by splicing plastic forming components to be formed. SOLUTION: The method for manufacturing a tubing article involves a manufacturing method by which two or more components are spliced, including one or more plastic forming components to be formed such as bending and bulging processing, and the plastic forming component to be formed is spliced to a counter part before the plastic forming, and next, the plastic forming component to be formed is deformation-processed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article formed by joining a plastic or plastic part to be worked, such as a water spout for a bathroom or a door knob, with a mating part, and a method of manufacturing the same.

[0002]

2. Description of the Related Art In a conventional article of this type, as shown in FIG. 6, a rod or a tubular part 4 is subjected to a plastic working such as bending in advance (FIG. 6b) and joined to a mating part 1 such as a pedestal (FIG. 6). 6c), articles A such as bathroom spouts and doorknobs were formed.

[0003]

In a conventional method of manufacturing such an article, when an article having only the shape formed by plastic working is changed using element parts having the same shape, each time the shape is changed. In addition, it is necessary to newly manufacture a positioning jig used for the joining process, which is one of the factors that lowers productivity.

[0004] Further, depending on the molding shape, it is impossible to hold a torch used for joining such as soldering, brazing, welding or the like at a predetermined position near a joint fitting portion geometrically. May be impossible, and there are restrictions on the degree of freedom in shape.

Further, in the case of manufacturing by the conventional manufacturing method, the shape of the joint-side end face after plastic working is delicately changed to an unpredictable shape due to the influence of plastic working. In many cases, it is not possible to obtain the shape accuracy and dimensional accuracy required for joining, and there is a defect in quality such that defective joints are likely to occur or variations in joining strength increase.

Further, since the plastic working is performed separately, there is also a disadvantage that the parts management in the manufacturing process becomes complicated.

The present invention has been made to solve such problems, and an object of the present invention is to provide an article formed by joining two or more element parts including one or more plastically processed parts and a method of manufacturing the same. An object of the present invention is to improve the productivity, the degree of freedom in shape and the quality, and to eliminate the complexity of component management during the manufacturing process.

[0008]

In order to solve the above-mentioned problems, the present invention relates to a method for manufacturing an article comprising two or more element parts including one or more plastically processed pipe parts. The method is characterized in that the pipe part is joined to a mating part before plastic working, and then the pipe part is plastically worked.

In this way, even when an article having the same shape is used to produce an article in which only the shape formed by plastic working is changed, the joining process is performed before the plastic working, so that the positioning jig is used. Need not be newly manufactured, and productivity can be improved.

[0010] Also, soldering, brazing,
Since there is no restriction on the holding position of the torch used for welding or the like, the degree of freedom in shape is improved.

Furthermore, since the part to be plastically processed is joined before the other part is subjected to plastic working, there is no dimensional change of the joint side end face due to the plastic working. It is possible to obtain a stable,
The effect of preventing the occurrence of defective bonding products or reducing the variation in bonding strength is produced, and the quality can be improved.

Further, since the bonding is performed earlier in the manufacturing process than in the conventional manufacturing method, it is possible to reduce the complexity of parts management in the manufacturing process.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIGS. 1 and 2 show a first embodiment. In this embodiment, an article A is a bathroom spout, and 1 is a brass or bronze bar material cut, forged or formed by casting. A flat pipe 4 made of brass is joined to the end face 3 of the water passage 2 on a pedestal provided with a water passage 2 therein. It was formed.

As shown in FIG.
Is formed by processing the end face 3 of the water passage 2 into a shape substantially the same as the shape of the end face 5 of the pipe material 4 (FIG. 2a).
The members are joined by a method such as soldering, brazing, or welding (FIG. 2B), and after finishing the joint 6 by processing the fabric, the tube material 4 is bent (FIG. 2C), plated, etc. A surface discharge port A is formed by surface treatment.

Therefore, in this embodiment, the pipe member 4 is a part to be plastically worked, and the pedestal 1 is a partner part.

FIGS. 3 and 4 show a second embodiment. In this embodiment, an article A is a water discharge port for a bathroom, and is an example in which bending and bulging are performed as plastic working.

Also in this example, reference numeral 1 denotes a pedestal formed by cutting, forging, or casting a rod material and having a water passage 2 formed therein. The end surface 3 of the water passage 2 is processed to form an end surface 5 of a tube 4. (FIG. 4a). Then, both end surfaces 3, 5 are joined by a method such as soldering, brazing, or welding (FIG. 4b). After finishing, for example, the tube material 4 is bent (FIG. 4c), and then the tube material 4 is bulged to expand an intermediate portion (FIG. 4).
d) The surface is finished to form a bathroom spout A.

Therefore, also in this embodiment, the pipe member 4 is a part to be plastically worked, and the pedestal 1 is a partner part.

According to the present invention, various deformations are possible, and it is possible to use a bar as a part to be plastically processed.
As shown in FIG. 7, a columnar bar 8 can be joined to a base plate 7 and then the bar 8 can be bent to form a fitting or a handrail as an article A.

Further, iron, stainless steel, aluminum or the like may be used as a material.

[0022]

According to the present invention, there is provided a method of joining two or more element parts including one or more plastically processed parts to be plastically processed in a pipe material, wherein the plastically processed parts are formed before plastic working. Since the part to be plastically processed is plastically processed afterwards, even if an article with the same shape is used to manufacture an article with only the modified shape by plastic processing, the joint processing must be performed before plastic processing. Since it is applied, it is not necessary to newly manufacture a positioning jig, and the productivity can be improved.

Also, soldering, brazing,
Since there is no restriction on the holding position of the torch used for welding or the like, the degree of freedom in shape is improved.

Furthermore, since the part to be plastically worked is joined before the other part is subjected to the plastic working, there is no dimensional change of the joint side end face due to the plastic working, so that the dimensional accuracy required for the joining on the joint fitting surface is reduced. It is possible to obtain a stable,
The effect of preventing the occurrence of defective bonding products or reducing the variation in bonding strength is produced, and the quality can be improved.

Also, since the bonding is performed earlier in the manufacturing process than in the conventional manufacturing method, it is possible to reduce the complexity of parts management during the manufacturing process.

[Brief description of the drawings]

FIG. 1 is a sectional view of an article showing a first embodiment of the present invention.

FIG. 2 is a schematic external view showing a processing step of the first embodiment.

FIG. 3 is a sectional view of an article showing a second embodiment.

FIG. 4 is a schematic external view showing a processing step of a second embodiment.

FIG. 5 is an external view of an article showing a third embodiment.

FIG. 6 is a schematic external view showing a conventional processing step.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pedestal (part mating part) 2 ... Water passage 3 ... End face 4 ... Tube material (plastic processed part) 5 ... End face 6 ... Joint part 7 ... Base plate (part mated part) 8 ... Bar material (plastic processed part) A ... Article

Claims (1)

[Claims] Claims: 1. An article comprising one or more pipe parts to be plastically worked.
What is claimed is: 1. A method for manufacturing an article, comprising joining element parts having two or more points, wherein the pipe member is joined to a mating part before plastic working, and then the tube material is subjected to plastic working. Article manufacturing method.