KR101946766B1 - A Triple injection molded water faucet and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a triple injection-molded water faucet and a manufacturing method thereof. According to the present invention, the triple injection-molded water faucet comprises a housing and an internal core, which both are T-shaped. A mounting groove is formed near a rear side of the housing to mount a valve core. The housing is made from ABS materials. The internal core is made from a mixture of ABS and GF. In addition, included is a water supply member which is made by an injection molding to be integrated with the internal core and made from PPA materials. The water supply member includes: a cold-water supply passage communicating with a cold-water outlet; a hot water supply passage communicating with the hot water outlet; and a first water discharge passage. The central unit of the water supply member communicates with the mounting groove to form a cylindrical support chamber with a hollow part. The support chamber respectively communicates with the cold-water supply passage and the hot water supply passage. A position on a lower side of the support chamber communicates with a second water discharge passage. The first water discharge passage is engaged with the second water discharge passage by a screw thread. The second water discharge passage is sandwiched within an interval made by the cold-water supply passage and the hot water supply passage to protrude. The second water discharge passage communicates with the water outlet. The present invention is hygienic and environment-friendly. The present invention also provides the manufacturing method for the triple injection-molded water faucet.

Description

[0001] The present invention relates to a triple injection molding faucet and a manufacturing method thereof,

The present invention belongs to the field of tentacular technology and relates to triple injection molding faucets.

For example, Patent Document 1 of the present applicant discloses an injection-molded water receiving main body and a manufacturing method thereof, which includes a plastic inner layer and an inner plastic inner core, A cold water supply hole, a cold water supply hole, a hot water supply hole, a cold water supply hole, a hot water supply groove and an outlet hole, and a sealing lid plate is provided in the cold water supply groove, the hot water supply groove, Wherein the cold water supply port is communicated with the valve core mounting groove through the cold water supply chamber, and the hot water supply port is connected to the hot water supply water supply port, the hot water supply port, the hot water supply chamber, And the valve core mounting groove communicates with the outlet through the water outlet chamber, and the plastic housing is connected to the plastic inner nose And a through hole corresponding to a valve core mounting groove, a cold water supply port, a hot water supply port, and an outlet port are provided in the plastic housing, respectively.

On the other hand, a problem that exists in the technical solution disclosed in Patent Document 1 is that the use of the water receptacle for a long time causes deformation, and the inner core of the plastic is not hygienic since it easily generates substances harmful to the human body after prolonged use, And it can be harmful to the health of the user, especially when introduced into the drinking water receptacle.

Korean Patent No. 10-1712781 (Feb. 27, 2017).

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems occurring in the prior art, and it is an object of the present invention to provide a water-permeable member made of PPA material, There is no risk of generating a harmful substance to the user even in the water supply member, and it is an object of the present invention to provide an eco-friendly triple injection molding faucet which is surely sanitized and a manufacturing method thereof.

The object of the present invention can be realized by the following description.

Wherein the housing has a T-shaped housing and an inner core, the inner core being injection molded integrally with the inner cavity of the housing, the outlet being adjacent to the housing front side and being adjacent to the housing rear side A triple injection molding receptacle in which a mounting groove for mounting a valve core is provided and in which a cold water port and a hot water port are formed through the inner core at a rear side position of the housing, the housing being made of an ABS material, The inner core is made of a mixed material of ABS (acrylonitrile butadiene styrene copolymer) and GF (glass fiber), and is formed by injection molding with the inner core integrally formed with PPA (polyphthalamide) The water supply member includes a cold water supply passage communicating with the cold water inlet, a hot water supply passage communicating with the hot water inlet, And a central portion of the water supply member communicates with the mounting groove to form a hollow cylindrical support chamber, the support chambers being respectively communicated with the cold water supply passage and the hot water supply passage, And the second water outlet passage is threadedly engaged with the second water outlet passage and the second water outlet passage is sandwiched and protruded in a gap formed by the cold water feed passage and the hot water feed passage, And the second water outlet passage communicates with the outlet.

In addition, the cold water supply passage and the hot water supply passage are both formed in a seven-letter shape, and the outer ring of the cold water supply passage and the outer wall of the hot water supply passage are provided with annular fixing rings, As shown in Fig.

Preferably, the crossbar further includes a crossbar joined to the outer wall of the water passage member and connected to each of the stationary rings, wherein the cross bar is installed on both sides of the outer wall of the water passage member.

Preferably, the reinforcing plate further includes a reinforcing plate, and the reinforcing plate is installed at a corner portion of the seven-shaped cold water supply passage and a corner portion of the seven-shaped hot water supply passage.

In addition, a first vent groove and a second vent groove are provided, two spaced apart from each other symmetrically with respect to a lower surface of the inner core farthest from the front side of the mounting groove, and a second vent groove is formed on the front side of the first vent groove A plurality of third vent grooves provided along the axial direction are formed on the lower surface of the adjacent inner core, and a first lid plate covering the first vent groove, the second vent groove and the third vent groove, And a third cover plate.

Preferably, the axial direction side of the first ventilation groove is provided as a surface of the arc, and the radial direction of the first ventilation groove is provided as a surface of the arc.

Preferably, two opposing arc surfaces are provided on both sides in the axial direction of the second ventilation groove.

Preferably, a protrusion is provided at a central portion of the third ventilation groove, and a concave portion is provided at a central portion of the third cover plate, and the concave portion and the protrusion are matched with each other.

The present invention further provides a method of making a triple injection molding faucet comprising the steps of:

(1) a step of injecting a water supply member first, and integrally injecting a cold water supply passage, a hot water supply passage, a first water supply passage, a second water supply passage, a stationary ring and a cross bar into a water supply member;

(2) injecting the inner core so as to integrally form a valve core mounting groove, a cold water hole, a hot water hole, a cold water supply groove, a hot water supply groove and a discharge port in the inner core;

(3) forming a water flow passage by covering the cold water supply grooves, the hot water supply grooves and the outlets with the first cover plate, the second cover plate and the third cover plate after the injection molding of the inner core;

(4) encapsulating the inner core with a secondary injection to form a housing of the outer layer, and obtaining an integrally molded triple-receptacle body.

Preferably, the method further comprises a step (5) of plating the housing sequentially with a copper layer, a nickel layer and a chromium layer after injection molding the housing.

As described above, the triple injection molding faucet of the present invention has the following advantageous effects.

Compared with the prior art, the present invention adopts the above-mentioned triple injection-molding water receiving structure and injects the water passage member, the inner core and the housing integrally through the installation of the water passage member made of the PPA material, There is no danger of generating harmful substances to the user even in the environment, and hygiene is assured and environmentally friendly. At the same time, the housing made of the ABS material prevents shrinkage of the housing, strengthens the internal strength and prevents rupture. Further, the water-permeable member, the inner core, and the housing are integrally injection molded to obtain a triple injection molding faucet , The mold cavity is reduced, the inflow of water can be prevented, a good thermostatic insulation effect is obtained, and it is convenient for the user to use.

Fig. 1 is a stereoscopic view after injection of a triple injection molding faucet according to the present invention. Fig.
2 is a structural exploded view of a triple injection molding faucet according to the present invention.
Fig. 3 is an enlarged view of the water supply member of the triple injection molding water supply according to the present invention.
4 is a structural view of a triple injection molding water receiving housing according to the present invention.
5 is an internal core structure diagram of a triple injection molding water receiver according to the present invention.
Fig. 6 is a structural view of each cover plate of the triple injection molding faucet according to the present invention. Fig.
7 is a structural view of the inner core of the triple injection molding faucet according to the present invention, viewed from another viewpoint.
8 is an enlarged view of part A of Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to specific embodiments. Those skilled in the art will readily understand other advantages and effects of the present invention through the disclosure of the present invention.

The structures, ratios, sizes, and the like shown in the drawings of the present specification are applied only to contents disclosed in the specification so that the reader can understand and understand the present invention, and are not limitations for limiting the scope of the present invention, Thus, unless the description has any substantial technical meaning, and any modification of the structure, modification of the ratio relationship, or adjustment of the size does not affect the effect that may be caused by the present invention and the achievable purpose, It should be within the scope of the contents. At the same time, the terms quoted above, such as "upper," "lower," "left," "right," "middle," and " And is not intended to limit the scope of the present invention, the change or adjustment of the relative relationship is also regarded as a feasible category of the present invention without substantial change in the content of the description. The specific structure will be described with reference to the accompanying drawings of the patent application.

In the following embodiments, the left side of the paper is the left direction, the right side of the paper is the right side, the upper side of the paper is the upward direction, the lower side of the paper is the downward direction, the front side perpendicular to the paper is the front direction, The vertical rear side is the rear side, the inner cavity of the housing is the inner side, and the outer wall of the housing is the outer side.

In order to solve the problem that the double injection molding faucet is not unsanitary and environment-friendly after long use, triple injection molding faucet is provided. (1) and an inner core (2), as shown in Figures 1, 2, 3, 4 and 5, the inner core (2) And placed in a cavity to be integrally injection-molded. An outlet port 11 is formed adjacent to the front side of the housing 1 and a mounting groove 12 for mounting a valve core (not shown) adjacent to the rear side of the housing 1 is provided, A cold water inlet 13 and a hot water inlet 14 are formed on the rear side of the housing 1 to penetrate the inner core 2. The housing 1 is made of an ABS material, and the inner core 2 is made of a mixed material of ABS and GF. The water supply member (3) further includes a cold water supply passage (31) communicating with the cold water supply port (13), and a water supply member (3) formed by injection molding with the internal core (2) A hot water supply passage 32 communicating with the hot water inlet 14, and a first water supply passage 33. The central portion of the water passage member 3 communicates with the mounting groove 12 to form a hollow cylindrical support chamber 34. The support chamber 34 communicates with the cold water supply passage 31 and the hot water supply passage 32, and the second water outlet passage 35 is communicated with the lower portion of the support chamber 34. As shown in Fig. The first water outlet passage 33 is threadedly engaged with the second water outlet passage 35 and the second water outlet passage 35 is formed in a gap formed between the cold water feed passage 31 and the hot water feed passage 32 And the second water outlet passage (35) communicates with the outlet (11).

The present invention is characterized in that the water passage member 3, the inner core 2, and the housing 1 are integrally formed by injection molding by using a PPA material, as compared with the prior art (Patent Document 1) Thus, even if water is present in the water supply member 3 for a long time, there is no risk of causing a harmful substance to the user, sanitation is surely ensured and environmentally friendly. At the same time, the housing 1 made of the ABS material can prevent the housing from shrinking, increase the strength of the interior, and does not cause rupture. In addition, by injection molding the water passage member 3, the inner core 2, and the housing 1 integrally to obtain a triple injection molding faucet, the mold cavity is reduced, water is prevented from flowing in, It is convenient for users to use.

As shown in Figs. 2, 3, 7 and 8, the stability between the water-permeable member 3 and the inner core 2 is enhanced, and after the water is introduced, The cold water supply passage 31 and the hot water supply passage 32 are formed in a seven-letter shape and the outer wall of the cold water supply passage 31 and the inner core 2, A fixing ring 36 is provided on the outer wall of the hot water supply passage 32 in a ring shape and a concave groove 21 (see FIG. 8) fastened to the fixing ring 36 is formed on the inner core 2 Respectively. An annular retaining ring 36 is provided corresponding to the cold water feed passage 31 and the hot water feed passage 32 both provided in a seven-letter shape and joined to the concave groove 21 provided in the inner core 2, The concave groove 21 and the fixing ring 36 are mutually fastened to prevent shaking between the water-permeable member 3 and the inner core 2 due to the flow of water after the water is introduced It is possible to reliably ensure the stability between the water-feeding member 3 and the inner core 2, thereby achieving a good watering speed and preventing a phenomenon in which the amount of water is increased or decreased, Is more convenient to use.

3, a cross bar 37, which is joined to the outer wall of the water passage member 3 and connected to the respective fixing rings 36, is further provided to increase the strength of the water passage member 3, And the cross bar (37) is installed on both sides of the outer wall of the water passage member (3). The provision of the stationary ring 36 and the crossbar 37 prevents the stability between the water supply member 3 and the inner core 2 from being affected when a relatively large amount of water is distributed to the water supply member 3 The service life of the triple injection molding faucet of the present invention is prolonged, and the number of times of maintenance is reduced, thereby further reducing the cost.

3, it further includes a reinforcing plate 38 for increasing the strength of the water-permeable member 3, and the reinforcing plate 8 is formed of a hexagonal cold water supply passage 31 And the corner portion of the seven-figure type hot water supply passage 32. [0050] The reinforcing plate 38 corresponding to the corner portion of the seven-shaped cold water supply passage 31 and the corner portion of the seven-pointed hot water supply passage 32 is provided, The amount of water to be fed is increased or decreased, and it can be more reliably accommodated. The reinforcing plate 38 installed has an effect of reinforcing the buffering force and the stability.

2, 3, 5, and 6, in order to prevent leakage of the internal core 2 due to its good sealability, A first ventilation groove 22 and a second ventilation groove 23 in which two intervals are symmetrically provided are provided adjacent to the lower surface of the inner core 2 far from the first ventilation groove 22, A plurality of third ventilation grooves 24 are provided on the lower surface of the inner core 2 adjacent to the front side along the axial direction and are respectively provided with the first ventilation grooves 22 and the second ventilation grooves 23, A second cover plate 5, and a third cover plate 6 that cover the third ventilation groove 24. The first cover plate 4, the second cover plate 5, The first ventilation groove 22, the second ventilation groove 23, the third ventilation groove 24 and the corresponding first cover plate 4, the second cover plate 5 and the third cover plate 6 or the internal core 2 by the use of the first cover plate 4, the second cover plate 5 and the third cover plate 6 and the internal core 2 through the installation of the first and second cover plates 6, It is only required to separate the corresponding members, so that the operation is very simple, convenient, quick and efficient.

Preferably, as shown in Figs. 5 and 6, in order to ensure that the first ventilation groove 22 corresponding to the first cover plate 4 has good sealing performance, the first ventilation groove 22 And the radial direction of the first ventilation groove 22 is provided as a surface 7. It is possible to ensure that a good sealing property is provided between the first cover plate 4 and the first ventilation groove 22 through the provision of the corresponding surface 7, , It is possible to avoid the phenomenon that water flows into the inner cavity of the inner core 2, so that the flow of water becomes more smooth and the original activity of the water flow is further improved.

Preferably, as shown in Figs. 5 and 6, in order to ensure that the second ventilation groove 23 corresponding to the second cover plate 5 has good sealing performance, the second ventilation groove 23 Are provided on both sides in the axial direction of the rotating shaft (2). It is possible to ensure that a good sealing property is provided between the second cover plate 5 and the second ventilation groove 23 through the provision of the corresponding surface 7, , The phenomenon that water is injected into the internal cavity of the internal core 2 can be avoided, the flow of water becomes more smooth, and the original activity of the water flow is further improved.

Preferably, as shown in Figs. 5 and 6, in order to ensure that the third ventilation groove 24 corresponding to the third cover plate 6 has good sealing performance, the third ventilation groove 24 A protrusion 241 is provided at the center of the third cover plate 6 and a concave hole 61 is provided at the center of the third cover plate 6 so that the concave hole 61 is aligned with the protrusion 241. It is possible to ensure that a good sealing property is provided between the third cover plate 6 and the third ventilation groove 24 through the provision of the corresponding protrusion 241, , It is possible to avoid the phenomenon in which water flows into the internal cavity of the internal core 2, so that the flow of water becomes more smooth and the original activity of the water flow is further improved. Further, a supporting force corresponding to the third lid plate 24 is provided, so that the phenomenon of the inclination of the third lid plate 24 can be prevented, and the sealing performance is further improved.

The present invention further provides a method of making a triple injection molding faucet,

(1) As shown in Fig. 3, the water supply member 3 is firstly injected so that the cold water supply passage 31, the hot water supply passage 32, the first water supply passage 33, 2 outflow passage 35, a fixed ring 36, and a cross bar 37 are formed;

(2) As shown in Figs. 4 and 5, the internal core 2 is then injected to insert the valve core mounting groove 12, the cold water inlet 13, the hot water inlet 14, (Not shown), a hot water supply groove (not shown), and an outlet port 11;

(3) As shown in Figs. 4 and 5, after the inner core 2 is injection-molded, the first cover plate 4, the second cover plate 5 and the third cover plate 6 for sealing (Not shown), a hot water supply groove (not shown), and a water outlet 11 to form a water flow passage;

(4) As shown in Fig. 4, the inner core 2 is encapsulated by secondary injection to form a housing 1 of an outer layer, and an integrally molded triple-receptacle body is obtained.

Preferably, the method further comprises a step (5) of plating the copper layer, the nickel layer and the chromium layer sequentially on the housing 1 after the housing 1 is injection molded. By plating a copper layer, a nickel layer and a chromium layer on the housing 1, oxidation can be prevented and the service life can be extended.

In the step of the method, the housing 1 is injected with an ABS material and the inner core 2 is mixed and injected with a mixed material of ABS and GG, wherein the mass percentage percentage of the ABS material is 30% -90% The mass percentage of GF material is 40% -80%. The housing (1) and the inner core (2) are each injected with a corresponding material so that the inner and outer plastic members are unbonded to obtain a truly integral structure. The body of this type of faucet is more robust in structure, and the faucet main body injected by mixing ABS and GF materials has excellent properties such as moldability of ABS material, mechanical property of GF, impact strength and anti-ultraviolet property .

In the case of ABS + GF plating performance and surface adhesion, it is higher than the plating performance of general ABS and the surface adhesion force is higher than the coating strength test standard of GB18145-2014 (China), BS EN817-2008 (Europe), ASME A 112.18.1 / CSA B125.1-2012 (United States)}. The test medium was air, and the water was first held in an environment of 70 ± 2 ° C., kept for 30 minutes, taken out, kept at 15 ° C. for 15 minutes, maintained at -30 ° C. for 30 minutes, And maintained at 15 캜 for 15 minutes. As a result of performing the above-mentioned five cycles continuously in one cycle, there was no phenomenon such as plating layer dropout, cracking, blistering, and creasing on the surface. The surface plated layer has been subjected to a nitrate spray test for 24 hours through GB / T10125-2013, which according to GB / T6461-2002 standard has reached grade 9-10 or higher. ABS + GF has excellent performance and is clearly superior to conventional brass and conventional ABS, making it the main material for future health.

In this manufacturing method, since the inner core 2 is sealed by the secondary injection to form the housing 1, it is not necessary to fabricate the power receiving main body by the assembling method. In this case, the overall structure of the inner core 2 is stable And the manufacturing process of injecting the groove body of different shape and structure into the inner core 2 is more easily realized. The internal core 2 does not require secondary machining, thereby reducing the process and reducing the production cost.

As described above, the triple injection molding faucet of the present invention has the following beneficial effects:

Compared with the prior art, the present invention adopts the above-mentioned triple injection-molding water receiving structure and injects the water passage member, the inner core and the housing integrally through the installation of the water passage member made of the PPA material, There is no danger of generating harmful substances to the user even in the environment, and hygiene is assured and environmentally friendly. At the same time, the housing made of the ABS material prevents shrinkage of the housing, strengthens the internal strength and prevents rupture. Further, the water-permeable member, the inner core, and the housing are integrally injection molded to obtain a triple injection molding faucet , The mold cavity is reduced, the inflow of water can be prevented, a good thermostatic insulation effect is obtained, and it is convenient for the user to use.

In conclusion, the present invention effectively overcomes various drawbacks in the prior art and has high industrial utility value.

The foregoing embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person skilled in the art can make modifications or alterations to the embodiments without departing from the spirit and scope of the present invention. Accordingly, all equivalents or variations that the person skilled in the art is to make without departing from the spirit and scope of the invention disclosed in the present invention should be included in the claims of the present invention.

1: Housing
2: Internal core
3:
4: first cover plate
5: Second cover plate
6: Third cover plate
7:
11: Outlet
12: Mounting groove
13: cold water
14: Warm water pipe
21: concave groove
22: first vent groove
23: second vent groove
24: third vent groove
31: cold water supply passage
32: Hot water supply passage
33: First water outflow passage
34: support chamber
35: second water outflow passage
36: Crossbar
61: Concave

Claims (10)

Wherein the housing has a T-shaped housing and an inner core, the inner core being injection molded integrally with the inner cavity of the housing, the outlet being adjacent to the housing front side and being adjacent to the housing rear side Wherein a mounting groove for mounting a valve core is provided, and a cold water inlet and a hot water guide penetrating through the inner core are formed at the rear side of the housing,
The housing is made of an ABS (acrylonitrile butadiene styrene copolymer) material, and the inner core is made of a mixed material of ABS and GF (glass fiber), injection-molded integrally with the inner core, Amide) material, wherein the water supply member includes a cold water supply passage communicating with the cold water port, a hot water supply passage communicating with the hot water supply port, and a first water supply passage, The support chamber communicates with the cold water supply passage and the hot water supply passage, the second water supply passage communicates with the lower portion of the support chamber, and the support chamber communicates with the cold water supply passage and the hot water supply passage, Wherein the first water outlet passage is threadedly engaged with the second water outlet passage, and the second water outlet passage is formed in an interval formed by the cold water supply passage and the hot water supply passage And the second water outlet passage is communicated with the outlet port, wherein both the cold water supply passage and the hot water supply passage are formed in a seven-letter shape, and the outer wall of the cold water supply passage and the outer wall of the hot water supply passage are ring- Wherein a ring is provided in the inner core, and a concave groove to be coupled with the fixing ring is provided in the inner core.
delete The method according to claim 1,
Further comprising a crossbar connected to the outer wall of the water passage member and connected to each of the stationary rings, the cross bar being installed on both sides of the outer wall of the water passage member.
The method according to claim 1,
Further comprising a reinforcing plate provided at a corner portion of the seven-shaped cold water supply passage and at a corner portion of the seven-shaped hot water supply passage.
The method according to claim 1,
Wherein a first air vent groove and a second air vent groove are formed in such a manner that two intervals are symmetrically provided adjacent to a lower surface of the inner core farther from the front side of the mounting groove, A plurality of third vent grooves provided along the axial direction are formed on the lower surface of the core, and a first cover plate covering the first vent groove, a second vent groove and a third vent groove, a second cover plate, 3 < / RTI > cover plate.
The method of claim 5,
Wherein the axial direction side of the first ventilation groove is provided as an arc surface, and the radial direction of the first ventilation groove is provided as a arc surface.
The method of claim 5,
Wherein two opposing arc surfaces are provided on both sides in the axial direction of the second ventilation groove.
The method of claim 5,
Wherein a projection is provided at a central portion of the third ventilation groove, and a concave portion is provided at a central portion of the third cover plate, and the concave portion and the projection are matched with each other.
In a method for producing a triple injection molding water receiver,
(1) First, the water supply member is injected so that the cold water supply passage, the hot water supply passage, the first water supply passage, the second water supply passage, the fixing ring and the cross bar are formed on the water supply member, And a fixing ring having an annular shape is installed on the outer wall of the cold water supply passage and the outer wall of the hot water supply passage;
(2) injecting the inner core so as to integrally form an inner core with a valve core mounting groove, a cold water pipe, a hot water pipe, a cold water supply groove, a hot water supply groove, a water outlet and a concave groove to be engaged with the fixing ring;
(3) forming a water flow passage by covering the cold water supply grooves, the hot water supply grooves and the outlets with the first cover plate, the second cover plate and the third cover plate after the injection molding of the inner core;
(4) encapsulating the inner core by a secondary injection to form a housing of the outer layer, and obtaining an integrally molded triple-receptacle main body.
The method of claim 9,
Further comprising a step (5) of plating the housing with a copper layer, a nickel layer and a chromium layer sequentially after the injection molding of the housing.

Images