KR100881788B1 - Method for manufacturing spout holder - Google Patents

Abstract

The present invention relates to a method for producing a spout holder, characterized in that the production by double injection method by two kinds of synthetic resin material.

Method for producing a spout holder, (a) mounting the inner tube pre-formed with a synthetic resin to a pair of holders provided on the upper mold so that a pair of grooves are formed on the inner surface of the spout holder which is the final product; (b) approaching and closing the pair of left and right molds while allowing the exterior molding grooves formed on the inner surfaces of the pair of left and right molds to be disposed outside the inner tube mounted on the holder; (c) injecting a synthetic resin different from the material of the inner tube into the outer mold forming groove so that the outer mold is double-injected to the outside of the inner tube; (d) separating the mold to take out the intermediate molded article; And (e) manufacturing the spout holder which is the final product by plating the outer surface except for the inner tube.

As a result, the manufacturing cost can be greatly reduced, and the weight can be reduced, thereby increasing the safety and convenience of the work, and also eliminating the noise caused by the interference with the crimped hose even when a separate guide ring is not used. It can reduce and further improve the durability of the corrugated hose.

 Spout Holder, Spout, Crimp Hose, Sink, Sink, Water Supply

Description

Method for manufacturing spout holder {Method for manufacturing spout holder}

1A is a perspective view of a spout holder according to the prior art,

FIG. 1B is a schematic partial sectional view of FIG. 1A;

Figure 2 is a side perspective view of the spout holder in accordance with the present invention, the cap is placed in front of the state,

3 is a front perspective view of FIG. 2;

4 is a cross-sectional view of FIG.

5 is a schematic perspective view of a mold for the manufacture of a spout holder;
Figure 6a is a view showing a state of use of the mold according to the present invention, a cross-sectional view showing a state before the appearance (external pipe),
Figure 6b is a view showing a state of use of the mold according to the present invention, a cross-sectional view showing a state in which the upper and left and right molds are lifted after external injection molding,
7A is a cross-sectional view of a mold according to the present invention, showing a state before injection of an external pipe;

Figure 7b is a cross-sectional view of the mold according to the present invention, showing a state in which the upper and left and right molds are lifted after external injection molding,

8A is a schematic perspective view of an inner tube of a spout holder separated from a holder positioned between a pair of left and right molds;

Figure 8b is a perspective view of the inner tube of the spout holder coupled to the cradle in Figure 8a,

9 (a) and 9 (b) schematically illustrate a process of forming a groove by a cradle;

10 is a flow chart according to the manufacturing method of the spout holder according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: spout holder 20: inner tube

20a: coupling part 30: appearance

40: groove 50: lower mold

51: holder 60: upper mold

70,80: Left and right mold 71: Exterior molding groove

The present invention relates to a method for producing a spout holder, characterized in that the production by double injection method by two kinds of synthetic resin material.

Spout holder refers to a part or element of a tube that carries a liquid such as water or oil. It usually has a curved shape in one direction. An apparatus for injecting oil into the fuel tank of a vehicle at a gas station may also be a kind of spout holder.

As such, spout holders are widely used around our lives. Hereinafter, a spout holder mounted on a sink of a household sink will be described.

Kitchens in modern apartments and villas are equipped with sinks for washing dishes. Water sinks for water supply are provided around the sinks.

Previously, the water supply facility was merely a faucet, but as part of improving the value of the terrier props in recent years, a water supply facility having a structure as shown in FIGS. 1A and 1B is provided.

1A is a perspective view of a spout holder according to the prior art, and FIG. 1B is a schematic partial cross-sectional view of FIG. 1A.

As shown in this figure, the spout holder 110 constitutes an element of the water supply facility. When the water supply facility is added to the overall water supply facility, the water supply facility is installed around the sink (not shown). ), A spout holder 110 coupled to the assembly body 101 for water supply, a pleated hose 120 coupled to the spout holder 110 to supply water in number, and a shower connected to the pleated hose 120. 130 is provided.

The assembly body 101 for water supply is equipped with a lever 103 for controlling or regulating the flow of water from the water pipe to the shower 130.

The pleated hose 120 has a pleated structure whose length is varied so that the shower 130 can be moved from the spout holder 110 to a desired position. The corrugated hose 120 is usually made of a metal material having corrosion resistance.

The spout holder 110 is an auxiliary means for mounting the shower 130. As shown, the spout holder 110 is bent to one side, that is, the shower 130 has a shape bent to one side to face the bottom surface of the sink.

The spout holder 110 forms a space for arranging the pleated hose 120 and means for connecting the shower assembly 130 and the assembly body 101 for water supply.

Cap 111 is further coupled to the top of the spout holder 110 to connect the shower 130 to the spout holder 110. The cap 111 is coupled to the spout holder 110 as a protrusion jaw 111a formed at the insertion end side thereof is fitted into the groove 110a formed at the inner wall of the spout holder 110.

On the other hand, the spout holder 110 having the above role and structure is usually manufactured by casting using a brass material, then released as a finished product by forming a plating on the outer surface, it is mounted on the sink area by the operator in the field.

By the way, the conventional spout holder 110 is made of a brass material as described above, there is a problem that not only the manufacturing cost increases but also the weight is heavy. Heavy weights can increase the overall logistics costs or cause worker safety problems at work.

In addition, since the spout holder 110 and the corrugated hose 120 are all made of metal, the spout holder 110 is moved in the process of moving the corrugated hose 120 in the spout holder 110 when the shower 130 is pulled out. To hit the inner wall of the) causing excessive noise, if there is a problem that causes the wear and damage of the corrugated hose (120).

Thus, in order to solve this noise problem, as shown in Figure 1b, there is an example in which the guide ring 112 of the synthetic resin material is mounted on the spout holder 110 to guide the movement of the pleated hose 120.

However, in this way, when the guide ring 112 is used, not only the additional cost according to the purchase of the guide ring 112, but also a separate assembly process for assembling the guide ring 112 is accompanied by a problem have.

In addition, even when the guide ring 112 is used, the area where the corrugated hose 120 is in contact with the guide ring 112 is small, so that the effect of substantially reducing noise is not known.

Therefore, in the past, the spout holder is manufactured by injection molding with synthetic resins, not metals, but the surface of the spout holder has been proposed to be manufactured so as to be indistinguishable from a metallic material in appearance. Since the overall shape is gently bent, the internal structure is complicated, and especially the inner wall has to be provided with a groove portion 110a for fitting the cap 111, it was not possible to manufacture by the conventional injection molding method of a synthetic resin mold.

That is, in the case of forming a protrusion for forming the groove 110a in the mold, when the spout holder 110 is to be separated from the mold after injection, the protrusion causes an interference and thus cannot be separated. The spout holder 110 had a closed end that can not be replaced with an injection by a synthetic resin.

The object of the present invention is not only to significantly reduce the manufacturing cost but also to reduce the weight, thereby increasing the safety and convenience of the operation, and also to the interference with the crimped hose even without using a separate guide ring as in the prior art. It is possible to reduce the noise caused by, and further to provide a method of manufacturing a spout holder that can improve the durability of the corrugated hose.

The object is (a) mounting the inner tube pre-molded with synthetic resin to a pair of holders provided on the upper mold so that a pair of grooves are formed on the inner surface of the spout holder which is the final product; (b) approaching and closing the pair of left and right molds while allowing the exterior molding grooves formed on the inner surfaces of the pair of left and right molds to be disposed outside the inner tube mounted on the holder; (c) injecting a synthetic resin different from the material of the inner tube into the outer mold forming groove so that the outer mold is double-injected to the outside of the inner tube; (d) separating the mold to take out the intermediate molded article; And (e) is achieved by the method of manufacturing a spout holder, characterized in that it comprises the step of manufacturing the spout holder of the final product by plating the outer appearance except the inner tube.

Here, the inner tube may be made of modified polystyrene (MPPO, Modifide Polyphenylene Oxide) that is not substantially plated in the step (e).

The appearance may be made of ABS (Acrylonitrile Butadiene Styrene copolymer) that can be substantially plated in the step (e).

The pair of grooves may be formed to be symmetrical with each other in a region where the inner tube and the outer surface are in contact with each other.

The pair of cradles are mutually inclined relative to the cradle body and are provided to be mutually accessible and spaced apart from each other, wherein the pair of cradles are spaced apart from each other when the molds are closed to each other, and when the molds are opened to each other. The pair of cradles can be accessed mutually.

After the step (c) may further comprise a cooling step.

After the step (e), the step of inserting the end of the cap into the spout holder and may further comprise the step of coupling the cap to the spout holder while the protrusion formed in the cap is fitted into the groove.

The object of the present invention includes a lower mold having a pair of holders on which a preformed inner tube is mounted such that a pair of grooves are formed on an inner surface of the spout holder; An upper mold forming an upper portion of the lower mold at a position spaced apart from the lower mold; And a pair of left and right molds provided at an upper portion of the lower mold and accessible and spaced apart from each other toward the other side, and having an outer surface forming groove for double injection of an outer shape formed on an inner surface of the inner tube. It is also achieved by a mold for the manufacture of the spout holder.

Here, the pair of cradles are inclined to each other with respect to the cradle body, are provided to be mutually accessible and spaced toward each other, the pair of cradles are spaced apart from each other when the molds are closed to each other, the molds are mutually open When the pair of cradles can be accessed mutually.

The lower mold may further include a guide block, and a block groove may be further formed on the inner surfaces of the pair of left and right molds to correct the position by inserting the guide block.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

2 is a side perspective view of a spout holder according to the present invention, in which a cap is disposed in front, FIG. 3 is a front perspective view of FIG. 2, and FIG. 4 is a sectional view of FIG. 2.

Since the conventional spout holder 110 (see FIGS. 1A and 1B) described above has been manufactured as a cast-integral type of brass, manufacturing costs are high, its weight is heavy, and noise problems are caused.

However, since the spout holder 10 of the present embodiment is made of synthetic resin, all of the above problems can be solved.

First, the spout holder 10, which is the final product, will be described with reference to FIGS.

The spout holder 10 of this embodiment consists of the inner tube 20 and the exterior 30 largely. Both the inner tube 20 and the exterior 30 are made of synthetic resin, unlike the prior art. However, in relation to the plating process, the inner tube 20 and the outer case 30 are used in different materials.

When first expanding on the inner tube 20, the inner tube 20 has a bent shape in one direction. The inner tube 20 is formed as if most of it is inserted into the interior of the exterior 30, but a portion is provided to be partially exposed from any one side of the exterior 30.

Coupling portions 20a are formed on the outer surface of the exposed region of the inner tube 20 exposed from the outer appearance 30. Coupling portion 20a is utilized as a part that is combined with the water supply assembly body 101 when the spout holder 10 of the present embodiment is coupled to the water supply assembly body 101 shown in FIGS. 1A and 1B.

The inner tube 20 is made in advance of the modified polystyrene (MPPO, Modifide Polyphenylene Oxide) that is not substantially plated during the manufacturing process of the spout holder 10. That is, after being processed in advance in the form of a tube bent in one direction, it is mounted on a pair of holders 51 provided in the lower mold 50 to be described later. In order for the inner tube 20 to be mounted on the holder 51, the inner tube 20 is further provided with a mounting groove 22 corresponding to the position of the pair of holders 51, as shown in Figure 8a.

For reference, elaborate on modified polystyrene (MPPO). Modified polystyrene (MPPO) is also called the specific brand name NORYL. Such modified polystyrene (MPPO) is characterized as follows.

Excellent mechanical properties It is excellent and stable in stiffness, impact resistance and fatigue resistance in a wide temperature range from low temperature to near heat deformation temperature. Excellent electrical characteristics Excellent insulation, low dielectric constant, low dielectric loss tangent, and low temperature and frequency dependence make it safe for electrical applications. Excellent hot water resistance. Absorption is small. It does not hydrolyze even when it comes in contact with hot water or steam and is stable in strength. Excellent heat resistance The heat deformation temperature can be designed from 80 ° C to 165 ° C, and the degradation of physical properties due to heat treatment is small, and the thermal stability is excellent. It is flame retardant. It is self extinguishing. Because of its excellent flame retardancy, it is most suitable for the use of export electrical equipment with strict flame retardancy. Economical and lightweight. Due to the low water absorption, pre-drying is easy and the specific gravity is small, making it economically light. Excellent dimensional stability. The molding shrinkage rate is small and at the same time there is no fear of being affected by the molding conditions, so it is also suitable for the precision molding field where high dimensional accuracy is required. Good moldability Good releasability and flowability, and the molding temperature range is wide to facilitate molding.

Among these features, in particular, since modified polystyrene (MPPO) has excellent strength, when the inner tube 20 is made of modified polystyrene (MPPO), the spout holder 110 made of a conventional brass material (see FIGS. 1A and 1B). ) Or have a higher strength. Therefore, it may contribute to improving the durability of the spout holder 10.

In addition to these advantages, modified polystyrene (MPPO), which is a material of the inner tube 20, is not plated during plating because it is not conductive. In this way, if the inner tube 20 forming the inside of the spout holder 10 is not plated with a metal component and simply remains as a synthetic resin material, the contact with the corrugated hose 120 of FIGS. 1A and 1B will be described later. It can solve the noise and abrasion problem.

However, since the interior of the spout holder 10 of the present embodiment is made of unmodified polystyrene (MPPO), noise and abrasion problems are eliminated even when the guide ring 112 (see FIGS. 1A and 1B) is not mounted as in the related art. It will be possible to solve at the same time.

As shown in FIG. 4, a plurality of protrusions 20b are further formed on the outside of the inner tube 20 to securely couple to the exterior 30 during double injection. Of course, since the scope of the present invention is not limited thereto, the protrusion 20b does not necessarily need to be formed.

The exterior 30 is disposed on the outer surface of the inner tube 20 and molded. The exterior 30 also has a curved shape in one direction like the inner tube 20, and is made of synthetic resin, not brass.

However, the inner tube 20 is made of modified polystyrene (MPPO), whereas the exterior 30 is made of ABS (Acrylonitrile Butadiene Styrene copolymer). Of course, as will be described later, the exterior 30 is double-injected to the outside of the inner tube 20 by ABS, and after the double-injection, it is plated.

In the plating process, only the exterior 30 except for the inner tube 20 is plated independently. This is because, due to the material properties, ABS, which is a material of the exterior 30, may be plated, and modified polystyrene (MPPO), which is a material of the inner tube 20, may not be plated.

In this case, when only the exterior 30 located outside is independently plated, the spout holder 10, which is a substantially final product, is not distinguished from the conventional spout holder 110 (see FIGS. 1A and 1B) in appearance. do. In other words, it is difficult to visually distinguish the spout holder 10 of the present embodiment and the conventional spout holder 110 (see FIGS. 1A and 1B) without hearing it.

More about ABS. ABS is a styrene resin composed of three components of styrene, acrylonitrile and butadiene. The method of preparing the mixture is generally a mixture (blend) of the copolymer of acrylonitrile and butadiene and the copolymer of styrene and butadiene. A mixed resin having the properties of a polymer is obtained at the same time. In general, it is known to be used as a metal substitute for automobile parts, helmets, electrical equipment parts, spinning machines, parts, etc. because of its easy processing, impact resistance, and heat resistance.

On the other hand, when the exterior 30 is double-injected to the outside of the inner tube 20 to produce a single spout holder 10, the inner circumferential surface of the outer surface 30 adjacent to the upper end of the inner tube 20 is formed symmetrically to each other A pair of grooves 40 are formed. The inner surface of the pair of grooves 40 from one end of the outer surface 30 to which the cap 11 is coupled is tapered.

As shown in FIG. 2, when the cap 11 is coupled to the outside of the spout holder 10, the pair of grooves 40 are used as a place where the projection jaw 11a formed on the cap 11 is fitted. do. If the pair of grooves 40 are not formed, the cap 11 may be loose or easily detached from the spout holder 10.

For reference, the protruding jaw 11a formed in the cap 11 shown in FIG. 2 is formed between the pair of cutouts 11b cut out around the protruding jaw 11a. The cutout 11b allows the protruding jaw 11a to retain an elastic force that is bent inwardly, so that the protruding jaw 11a formed on the cap 11 can be easily fitted into the pair of grooves 40. It becomes possible.

Therefore, the pair of grooves 40 need to be formed in the spout holder 10. However, in the present embodiment, since the spout holder 10 is manufactured by double injection, it is difficult to form a pair of grooves 40 on the inner surface of the spout holder 10 by a simple injection mold.

If too complicated molds are to be used, this is also undesirable in terms of efficiency.

Therefore, in the present embodiment, a pair of grooves 40 are formed on the inner surface of the spout holder 10 more conveniently and conveniently through the molds 50 to 80 having the simple structure as described below. A mold 50 to 80 for manufacturing the spout holder 10 while the pair of grooves 40 are formed with reference to FIGS. 5 to 9 will be described.

Figure 5 is a schematic perspective view of a mold for the manufacture of the spout holder, Figures 6 and 7 shows a step-by-step view of the manufacturing method of the spout holder, Figure 8a is a cradle located between the pair of left and right molds Figure 8b is a schematic perspective view of a state in which the inner tube of the spout holder is separated, Figure 8b is a perspective view of the inner tube of the spout holder is coupled to the cradle in Figure 8a, Figure 9 (a) and (b) is a groove portion by the cradle A diagram schematically illustrating the process of formation.

In the present embodiment, the molds 50 to 80 for manufacturing the spout holder 10 are largely composed of a lower mold 50, an upper mold 60, and a pair of left and right molds 70 and 80.

The lower mold 50 is fixed in place while others have a structure that can be moved. The upper portion of the lower mold 50 is provided with a pair of holder 51. A pair of cradle 51 is coupled to the cradle body 52, as shown in Figures 6 to 8b, a pair of cradle 51 is coupled to the cradle body 52 inclined mutually to the other side Are provided to be mutually accessible and spaced apart.

In the pair of holder 51, the inner tube 20 is mounted in the manufacture of the spout holder 10. More specifically, as shown in FIG. 8A, each of the pair of mounting grooves 22 formed in the inner tube 20 is mounted on the pair of holders 51 so that the inner tube 20 is mounted on the holder 51.

After the process is progressed and the spout holder 10 is manufactured after the mounting groove 22, which is an area of the inner tube 20, is mounted on the pair of holders 51, the pair of holders 51 is located. A pair of grooves 40 can be formed as it is (see Fig. 9). However, if the pair of holder 51 is fixed, the inner tube 20 may not be separated from the holder 51 after the process is completed.

Therefore, in the present embodiment, a pair of holders 51 are inclined with respect to the holder body 52 so as to be mutually accessible and spaced apart from each other.
Figure 6a is a view showing the state of use of the mold according to the present invention, is a cross-sectional view showing a state before the injection (external pipe), Figure 6b is a view showing the state of use of the mold according to the present invention, the appearance ( External pipe is a cross-sectional view showing a state in which the upper and left and right molds are lifted up after injection molding, and FIG. 7A is a cross-sectional view of a mold according to the present invention, and a cross-sectional view showing a state before the external pipe is injected, and FIG. 7B. Is a cross-sectional view of a mold according to the present invention, which is a cross-sectional view showing a state in which the upper and left and right molds are lifted after external injection molding.
In order to manufacture the spout holder, the cradle 51 and the cradle body 52 are first installed on the lower mold 50, and then the inner tube 20 is positioned above the cradle 51, but the cradle 51 is disposed thereon. Is positioned to fit in the mounting groove 22 of the inner tube (20).
At this time, the holder 51 is located in the holder body 52, as shown in Figure 6a, Figure 7a, in this state, both ends of the holder 51 slightly protrude from the outer peripheral surface of the holder body 52 Because it is in the state, the mounting groove 22 is inserted into it is fixed.
When the inner tube 20 is positioned above the lower mold 50 by the holder 21, the left and right molds 70 and 80 are assembled to the upper portion of the lower mold 50. The upper molds 60 and 80 are assembled to the upper mold 60 so that the exterior mold 30 can be injection molded.
In this state, when the ABS casting liquid is injected through the injection port 73, the exterior 30 is double-injected to the outside of the inner tube 20 in the exterior molding groove 71.
When the exterior 30 is molded by cooling after the injection process, the injection molding of the completed spout holder is separated from the mold by separating the left and right molds 70 and 80 and the upper mold 60 from the lower mold 50. Will be taken out.
The upper mold 60 is combined with a hanger (not shown) for lifting the upper mold 60, and thus lifting the upper mold 60, the upper mold 60, the left and right molds 70 and 80 are shown in Figure 6b and As shown in Figure 7b is raised together with respect to the lower mold 50, at this time the holder body 52 is a fixed state in place because it is integral with the lower mold 50, the holder 51 is the upper The mold 60 and the left and right molds 70 and 80 rise together.
Since the holder 51 is integrally formed with the intermediate connector 54, the holder 51 is formed in a long rod shape. Since the engaging part 53 is coupled to the lower end of the intermediate connector 54, the engaging part 53 is lowered. The cradle 51 is raised until it interferes with the mold 50. The cradle 51 and the intermediate connecting portion 54 located on both sides of the cradle 51 move upward with respect to the cradle main body 52 and the lower mold 50. Since it is installed in the form of a taper that narrows the gap, when the holder 51 is raised together with the upper mold 60 and the left and right molds 70 and 80, the upper part of the holder 51 is the holder body. The distance between the two cradle 51 is narrowed while protruding from the 52 and ascending along the tapered surface.

Therefore, when the upper mold 60 and the left and right molds 70 and 80 rise as shown in FIGS. 6B and 7B, the gap between the two holders 51 is narrowed as shown in FIG. 9B. As such, by lifting the upper mold 60 and then separating the left and right molds 70 and 80, the completed spout holder can be separated from the mold.
The pair of left and right molds 70 and 80 are provided on the upper portion of the lower mold 50 and are provided to be mutually accessible and spaced apart from each other (see arrows in FIG. 5).

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And the inner surface of the pair of left and right molds (70, 80) is formed with an outer mold forming groove 71 for the double injection of the outer mold 30 to be molded to the outside of the inner tube (20).

Referring to the enlarged part of FIG. 6 and FIGS. 8A and 8B, the face forming groove 71 has an indented shape with respect to the plate surface. In the periphery of the appearance molding groove 71 is formed a block groove 72 is inserted into the guide block 55 formed in the lower mold 50 to correct the position. When the inner tube 20 mounted on the holder 51 is disposed in the outer mold groove 71, the coupling part 20a having the inner tube 20 is further exposed toward the upper right ear of the outer mold groove 71. Is placed.

Then, the process of manufacturing the spout holder 10 of the present embodiment through this configuration will be described step by step with reference to FIG.

First, the inner tube 20 is molded and prepared in advance (S11). As described above, the inner tube 20 is molded using unmodified polystyrene (MPPO).

Next, after separating the molds 50 to 80, the preformed inner tube 20 is mounted on a pair of holders 51 provided on the lower mold 50 (S12). At this time, as shown in Figures 8a and 8b, a pair of mounting grooves 22 formed in the inner tube 20 is to be mounted one by one pair of holder 51. At this time, the pair of mounting grooves 22, which are the portions on which the inner tube 20 is mounted, becomes the position of the groove portion 40 to be processed later. This can be confirmed through (a) of FIG. 9.

As shown in FIG. 8B through the process of FIG. 8A, when the inner tube 20 is mounted, both the left and right molds 70 and 80 and the upper mold 60 are closed based on the lower mold 50 (S13). When the molds 50 to 80 are closed in this way, the exterior molding grooves 71 formed on the inner surfaces of the pair of left and right molds 70 and 80 are disposed outside the inner tube 20 mounted on the holder 51. When the molds 50 to 80 are closed as described above, the pair of holders 51 are spaced apart from each other to stably support the inner tube 20 (see FIG. 6).

After closing the molds 50 to 80, the ABS casting liquid is injected through the injection holes 73 formed in the left and right molds 70 and 80, and the exterior 30 is formed outside the inner tube 20 in the exterior molding groove 71. ) Is double injection so that double injection (S14). Then, the exterior 30 may be injected to the outside of the inner tube 20.

After the double injection, it is cooled for a predetermined time (S15). Then, the molds 50 to 80 are separated to take out the intermediate molded article (not shown) (S16). At this time, lifting the upper mold 60 raises the left and right molds 70 and 80 and the cradle 51 with respect to the lower mold 50 and the cradle body 52. The cradle 51 has a narrower gap upwards. Since the ground rises along the tapered path, both upper ends are inclined inward as shown in FIG. 9B.
Therefore, the inner tube 20 from the cradle 51 can overcome the closed end is not good.

As shown in Figure 9 (a), the holder 51 is mounted on the inner tube 20, as shown in Figure 9 (b), while the mold (50 ~ 80) is separated from the holder from the inner tube 20 When the 51 is omitted, the groove portion 40 can be formed as it is in the place where the cradle 51 is missing.

Next, the external spout 30, except for the inner tube 20 is plated to manufacture a spout holder 10 which is the final product (S17). Of course, at this time, no effort is required to plate only the exterior 30. That is, as described above, when the intermediate molded product is plated as it is, due to the material characteristics, the inner tube 20 is not plated, only the exterior 30 is plated.

If the process of plating on the exterior 30 made of ABS is further described, first, etch is carried out in a chromic acid solution at about 70 degrees, and then paradium is substituted with butane of ABS with palladium (Pd) and tin (Sn). . It is then neutralized and subjected to electroless copper plating (Cu) on the substituted metal. Of course, electroless nickel plating or silver plating can also be performed as needed. Next, after copper lactate (Cu) plating, nickel plating and chromium plating may be performed.

After the plating of the exterior 30 is completed, one end of the cap 11 illustrated in FIG. 2 is inserted into the spout holder 10, and then the protruding jaw 11a formed on the cap 11 has the groove portion 40. The cap 11 may be coupled to the spout holder 10 while being fitted in the step (S18).

When the spout holder 10 is manufactured in this manner, the manufacturing cost can be greatly reduced and the weight can be reduced, thereby increasing the safety and convenience of the work.

In addition, even when a separate guide ring 112 (see FIGS. 1A and 1B) is not used as in the related art, noise due to interference with the corrugated hose 120 (see FIGS. 1A and 1B) may be reduced. That is, since most of the contact portion of the corrugated hose 120 (see FIGS. 1A and 1B) is an inner tube 20 made of synthetic resin, noise may be reduced. Therefore, it is possible to improve the durability of the corrugated hose 120 (see FIGS. 1A and 1B) with respect to noise and wear.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

As described above, according to the present invention, not only can significantly reduce the manufacturing cost, but also can reduce the weight, thereby increasing the safety and convenience of the work, and also crimped hoses without using a separate guide ring as in the related art. Noise due to interference with and can be reduced, and further has the effect of improving the durability of the corrugated hose.

Claims (5)

In the manufacturing method of the spout holder for injecting and solidifying the molten synthetic resin in the mold and then separating it into a mold, (a) The inner diameter is identical to the inner diameter of the spout holder and the outer diameter is injected into the inner tube smaller than the outer diameter of the spout holder, it is manufactured in a shape corresponding to the whole so as to form a skeleton of the spout holder, one end of the spout holder assembly body for water supply Injecting the inner tube so as to form a coupling portion for coupling with the assembly assembly for water supply, and the other end is formed by injecting the inner tube to be formed; (b) mounting the inner tube manufactured in (a) so that the mounting groove is fitted into and fixed to a pair of holders provided on the upper portion of the lower mold; (c) approaching and closing the pair of left and right molds while allowing the exterior molding grooves formed on the inner surfaces of the pair of left and right molds to be disposed outside the inner tube mounted on the holder; (d) injecting a synthetic resin different from the material of the inner tube into the outer mold forming groove so as to double-inject the outer tube to the outer side of the inner tube; (e) When the injection is hardened, the upper mold is lifted so that the left and right molds and the cradle are raised with respect to the lower mold and the cradle body. Allowing them to shrink in the inner radial direction so as to form a groove in the spout holder inner wall and withdraw the intermediate molded product from the mold without interference; (f) plating the exterior except for the inner tube; And (g) attaching a cap to the spout holder so that the protruding jaws of the cap coincide with the groove located at the tip of the inner wall of the spout holder; Method for producing a spout holder comprising a. The method of claim 1, As the inner tube, a modified polystyrene (MPPO, Modifide Polyphenylene Oxide), which is a non-conductive synthetic resin, is used, and as an external appearance, a conductive synthetic resin, ABS (Acrylonitrile Butadiene Styrene copolymer), is used. Method for producing a spout holder, characterized in that the plating. The method of claim 1, If (e) the cradle mounted on the inner tube is contracted in the inner radial direction, the spout holder manufacturing method, characterized in that the groove is formed intact in place of the cradle. The method of claim 1, The pair of cradles are coupled to each other inclined with respect to the cradle body, are provided to be mutually accessible and spaced toward the other side, in the state where the molds are assembled before injection, the pair of cradles are spaced apart from each other, injection And after the upper mold is lifted from the lower mold, the pair of cradles rise along the tapered inner inclined surface of the cradle body to access each other. The method of claim 1, Method for producing a spout holder further comprises a cooling step after step (d).

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