JP2003129531A - Manufacturing method for spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a spout, which has a degree of freedom of a design, makes the spout voluminous, makes a manufacturing cost lower than bulging and casting, and prevents a user from having a cheap image of the spout. SOLUTION: A pipe is inserted for holding into a mold, and a resin is infilled into the mold, so that a composite member, in which an outer surface of the pipe is covered with a resin layer, can be integrally molded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout forming a discharge port of a faucet.

[0002]

2. Description of the Related Art The following is known as a spout forming a spout of a faucet. As shown in FIG. 5, an inexpensive spout made of a bent metal pipe. As shown in FIG. 6, a spout having a voluminous feel, which is composed of a metal pipe partially bulged by bulging and a resin water discharge part assembled to one end of the metal pipe. As shown in FIG. 7, a spout that is cast and has a sense of volume and freedom of design. As shown in FIG. 8, an inexpensive spout with a voluminous feel in which a metal pipe is covered with a resin cover that is divided into two parts.

[0003]

The spout of FIG. 5 has a problem that there is no design freedom and there is no sense of volume, and the spouts of FIGS. 6 and 7 have a problem of high manufacturing cost, and the spout of FIG. 8 has a problem. Since the spout has a seam of the cover that is not visible, there is a gap between the resin cover and the metal pipe, and when tapping, a light tapping sound peculiar to the resin, which is different from the heavy tapping sound of the metal pipe, is used. The present invention has a problem of giving a cheesy image to a person.The present invention has been made in view of the above problems, has a degree of freedom in design, has a sense of volume, and does not give a cheesy image to a user. An object of the present invention is to provide a manufacturing method at a low cost.

[0004]

In order to solve the above-mentioned problems, in the present invention, a pipe is insert-held in a mold, resin is filled in the mold, and the outer surface of the pipe is covered with a resin layer. Provided is a method for manufacturing a spout, which comprises integrally molding a covered composite member. Further, in the present invention, a water discharge part is assembled to one end of a pipe to form a pipe assembly, the pipe assembly is insert-held in a mold, and a resin is filled in the mold to form an outer surface of the pipe assembly. Provided is a method for manufacturing a spout, which comprises integrally molding a composite member in which the resin is coated with a resin layer. In the method for producing a spout according to the present invention, a pipe or a pipe assembly is insert-held in a mold, a resin is filled in the mold, and the outer surface of the pipe or the pipe assembly is covered with a resin layer. Since the members are integrally molded, it is possible to manufacture a spout that has a degree of freedom in design, a sense of volume, and does not give the user a cheesy image at a lower cost than bulging or casting.

In a preferred embodiment of the present invention, the water discharge part is made of a filler reinforced resin. By using the filler-reinforced resin for the water discharge portion, it is possible to prevent the threads formed on the water discharge portion from being damaged by the load of the water purifier screwed to the water discharge portion when the spout is used.

In a preferred embodiment of the present invention, the water discharge part is made of filler-reinforced PSU resin. PSU resin has high resistance to chemicals such as detergents, and has good compatibility with ABS and PC / ABS that can be used as a constituent material of the resin layer.

In a preferred embodiment of the present invention, a plating layer is formed on the surface of the resin layer. By forming a plating layer on the surface of the resin layer, decorative gloss, beautiful color tone, abrasion resistance, etc. can be imparted to the spout surface.

In a preferred embodiment of the present invention, the pipe is made of stainless steel and the resin layer is ABS, PC / AB.
It is composed of any one of S and PP. Stainless steel has high corrosion resistance against chemicals used for plating, and ABS, PC / ABS and PP are plateable resins.

According to the present invention, there is provided a spout comprising a pipe and a resin layer for coating the outer surface of the pipe, and the pipe and the resin layer constitute a composite member integrally formed by insert molding. provide. Further, according to the present invention, a pipe assembly having a pipe and a water discharge part assembled at one end of the pipe, and a resin layer coating an outer surface of the pipe assembly are provided, and the pipe assembly and the resin layer are insert-molded. A spout characterized by comprising a composite member integrally molded by the above. Since the pipe or the pipe assembly which is the constituent member of the spout according to the present invention and the resin layer which covers the outer surface of the pipe or the pipe assembly constitute a composite member integrally molded by insert molding, the present invention The spout according to (1) has a degree of freedom in design, has a sense of volume, can be manufactured at a lower cost than bulging and casting, and does not give the user a cheap image. By attaching the water discharge part to one end of the pipe, the degree of freedom in design can be increased.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A spout and a method for manufacturing the spout according to a first embodiment of the present invention will be described. As shown in FIG. 1 (a), a glass fiber is formed at the other end of a pipe 1 made of a material having high corrosion resistance to chemicals used for plating treatment such as SUS steel having one end bent and reinforced plastic. PSU (polysulfone) reinforced with filler such as PPS
Water discharge part 2 made of resin such as (polyphenylene sulfide)
Assemble. As shown in FIG. 1 (b), the assembly of the pipe 1 and the water discharge part 2 is inserted into the recess 3a of the mold 3,
The slide core 3b, 3c of the mold 3 makes the pipe 1 and the water discharge part 2
While holding the assembly with, ABS (acrylic nitrile-butadiene-styrene resin), PC / A in the concave portion 3a of the mold 3
It is possible to plate the outer surface of the pipe 1 and a part of the outer surface of the water discharge part 2 by filling a plateable resin material such as BS (polycarbonate / acrylic nitrile-butadiene-styrene resin) or PP (polypropylene resin). The resin layer 4 is formed. The mold is opened, and the integrally molded composite member 5 shown in FIG. 2 in which the outer surface of the pipe 1 and a part of the outer surface of the water discharge part 2 are covered with the resin layer 4 capable of plating is taken out from the mold 3.

The surface of the resin layer 4 of the composite member 5 is plated. The plating process when the resin layer 4 is formed of ABS or PC / ABS will be described in detail. The composite member 5 is dipped in a mixed solution of etching chromic acid and sulfuric acid to elute the polybutadiene particles in the ABS resin forming the resin layer 4, and the anchor pattern 4a is formed on the surface of the resin layer 4 as shown in FIG. 3 (a). To form. Sensitizer treatment The composite member 5 was dipped in a bath liquid containing stannous chloride and concentrated sulfuric acid, and as shown in FIG. 3 (b), a metal having strong adsorbing power and reducing power was applied to the surface of the resin layer 4. Give. Washing with water As shown in FIG. 3 (c), the composite member 5 is washed with normal temperature water 3 to 4 times.
Wash with water. The composite member 5 was dipped in a bath liquid containing activator-treated palladium chloride and concentrated hydrochloric acid, and as shown in FIG. Palladium, which is a catalytic metal for promoting a chemical reaction (reduction reaction), is added. Chemical plating treatment The composite member 5 is dipped in a chemical plating bath solution, copper ions in the chemical plating bath solution are reduced to deposit copper, and as shown in FIG. A copper film having a thickness of 0.5 to 0.7 μm is formed. Due to, conductivity is imparted to the surface of the resin layer 4 and the anchor pattern 4 is formed on the surface of the resin layer 4.
a is formed. Electroplating treatment Copper plating is performed using a bath solution containing copper sulfate and sulfuric acid, and a film thickness of about 20 μm is formed on the surface of the resin layer 4 as shown in FIG.
To form the underlying copper film. Nickel plating is performed using a bath solution containing nickel sulfate, nickel chloride and boric acid, and a film thickness of about 10 μm is formed on the copper film as shown in FIG.
m nickel film is formed. The underlying copper film is rustproofed, and a surface that is likely to be chromium-plated is formed. Chromium plating is performed using a bath liquid containing chromic anhydride and sulfuric acid to form a chromium film having a thickness of about 0.2 μm on the nickel film as shown in FIG. 3 (f). With a decorative luster
A surface having a beautiful color tone unique to chrome and abrasion resistance is formed. The anchor pattern 4a formed on the surface of the resin layer 4 firmly anchors the underlying copper film to the resin layer 4 to obtain a plating layer that is difficult to peel off.

In the method of manufacturing a spout according to this embodiment, the resin layer 4 is formed on the outer surface of the pipe 1 insert-held in the recess 3a of the mold 3 and a part of the outer surface of the water discharge portion 2, Since the surface of the resin layer 4 is plated, a spout having a degree of freedom in design, a sense of volume, and not giving a user a cheesy image can be manufactured at a lower cost than that of bulging or casting. Further, by forming the resin layer 4 on the outer surface of the pipe 1, it is possible to suppress the temperature rise of the surface of the spout when hot water is passed by the heat insulating action of the resin layer 4. By making the water discharge part 2 of the spout a separate part from the remaining part, the flexibility of the tip shape of the spout is increased and the design is improved. By making the water discharge part 2 of the spout from the filler-reinforced resin, it is possible to prevent the threads formed on the water discharge part 2 from being damaged by the load of the water purifier screwed onto the water discharge part 2 when the spout is used. Resin is highly resistant to chemicals such as detergent P
By using SU or PPS, even if a strong detergent is attached to the thread of the water discharger 2 in a state where a load is applied to the thread, the loss of the thread can be suppressed. PSU is A
Since the compatibility with BS is good, the water discharge part 2 is filled with filler-reinforced PS.
If it is made of U and the resin layer 4 is made of ABS or PC / ABS, no gap can be formed at the joint α between the resin layer 4 of the composite member 5 and the water discharge portion 2, and the joint α is masked during the plating process. It has the advantage of not being necessary. The water discharge part 2 is PPS
When the resin layer 4 is made of ABS and PC / ABS, the joint α between the resin layer 4 of the composite member 5 and the water discharge part 2 is formed.
It is desirable to mask the seam α during the plating process to prevent chemicals from flowing into the seam α because there is a possibility that a gap will be created in the seam. Pipe 1 is made of SUS steel,
The water discharge part 2 is made of PSU, the resin layer 4 is ABS, PC / A
Since the resin layer 4 is made of BS and is plated, there is a feeling of weight and there is no risk of the threads of the water discharger 2 being damaged by the load of the water purifier and the like, and the threads of the water discharger 2 are loaded. Even if a strong detergent adheres to the screw thread in the above state, the screw thread is not likely to be damaged, and it has a gloss, a beautiful color tone, and wear resistance, and plating is not easily peeled off, and a spout is obtained.

A method of manufacturing a spout according to a second embodiment of the present invention will be described. As shown in FIG. 4, a pipe 11 made of a material having high corrosion resistance to chemicals used for plating such as SUS steel having both ends bent and reinforced plastic.
Is inserted into a recess of a mold similar to that of the first embodiment, both ends of the pipe 11 are held in the same manner as in the first embodiment, and the outer surface of the pipe 11 is plated in the same manner as in the first embodiment. A possible resin layer 14 is formed to obtain an integrally molded composite member 15 in which the outer surface of the pipe 1 is covered with the plateable resin layer 14. The surface of the resin layer 14 of the composite member 15 is plated to complete the spout.

Also in the method of manufacturing a spout according to this embodiment, it is possible to manufacture a spout which has a degree of freedom in design, has a sense of volume, and does not give the user a cheesy image at a lower cost than bulging or casting. it can.

[0015]

As can be seen from the above description, in the method of manufacturing a spout according to the present invention, the pipe or the pipe assembly is insert-held in the mold, and the mold is filled with the resin to fill the pipe or the pipe. Since the composite member with the outer surface of the assembly covered with a resin layer is integrally molded, a spout that has a degree of freedom in design, has a sense of volume, and does not give the user a cheesy image at a lower cost than bulging or casting. It can be manufactured. Since the pipe or the pipe assembly which is the constituent member of the spout according to the present invention and the resin layer which covers the outer surface of the pipe or the pipe assembly constitute a composite member integrally molded by insert molding, the present invention The spout according to has a degree of freedom in design,
It has a sense of volume, can be manufactured at a lower cost than bulging or casting, and does not give the user a cheap image.

[Brief description of drawings]

FIG. 1 is an explanatory view of a spout manufacturing method according to a first embodiment of the present invention.

FIG. 2 is a structural diagram of a composite member obtained by insert molding that constitutes the spout manufacturing method according to the first embodiment of the present invention. (A) is a sectional side view, (b) is a bb arrow view of (a).

FIG. 3 is an explanatory diagram of a plating process.

FIG. 4 is a side sectional view of a composite member obtained by insert molding that constitutes the spout manufacturing method according to the second embodiment of the present invention.

FIG. 5 is a perspective view of a conventional spout.

FIG. 6 is a structural diagram of a conventional spout. (A) is a sectional side view, (b) is a bb arrow view of (a).

FIG. 7 is a structural diagram of a conventional spout. (A) is a sectional side view, (b) is a bb arrow view of (a).

FIG. 8 is a side view of a conventional spout.

[Explanation of symbols]

1,11 pipe 2 water discharge part 3 mold 4,14 Resin layer 4a anchor pattern 5,15 Composite member

Claims (12)

[Claims] 1. A method for producing a spout, characterized in that a pipe is insert-held in a mold, resin is filled in the mold, and a composite member in which the outer surface of the pipe is covered with a resin layer is integrally molded. . 2. A pipe assembly is formed by assembling a water discharge part to one end of a pipe, and the pipe assembly is insert-held in a mold, and a resin is filled in the mold to fix the outer surface of the pipe assembly. A method for producing a spout, comprising integrally molding a composite member coated with a resin layer. 3. The method for producing a spout according to claim 2, wherein a water discharge portion made of a filler-reinforced resin is attached to one end of the pipe. 4. The method for producing a spout according to claim 3, wherein a water discharge part made of filler-reinforced PSU is assembled to one end of the pipe. 5. The method of manufacturing a spout according to claim 1, wherein the resin layer is formed of a resin capable of being plated, and the plating layer is formed on the surface of the resin layer. 6. The method of manufacturing a spout according to claim 5, wherein the pipe is made of stainless steel, and the resin layer is made of any one of ABS, PC / ABS, and PP. . 7. A spout comprising a pipe and a resin layer for coating the outer surface of the pipe, wherein the pipe and the resin layer form a composite member integrally formed by insert molding. 8. A pipe assembly having a pipe and a water discharge part assembled to one end of the pipe, and a resin layer coating an outer surface of the pipe assembly, the pipe assembly and the resin layer being formed by insert molding. A spout characterized by comprising a composite member integrally molded. 9. The spout according to claim 8, wherein the water discharge portion is made of a filler reinforced resin. 10. The spout according to claim 9, wherein the water discharge part is made of filler-reinforced PSU. 11. The spout according to claim 7, wherein the resin layer is formed of a resin that can be plated, and a plating layer formed on the surface of the resin layer is further provided. 12. The spout according to claim 11, wherein the pipe is made of stainless steel, and the resin layer is made of any one of ABS, PC / ABS, and PP.