CN110260014A - A kind of unleaded faucet inner core and preparation method thereof - Google Patents

A kind of unleaded faucet inner core and preparation method thereof Download PDF

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Publication number
CN110260014A
CN110260014A CN201910536595.5A CN201910536595A CN110260014A CN 110260014 A CN110260014 A CN 110260014A CN 201910536595 A CN201910536595 A CN 201910536595A CN 110260014 A CN110260014 A CN 110260014A
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China
Prior art keywords
inner core
speed
pressure
unleaded
injection
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CN201910536595.5A
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CN110260014B (en
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蔡永章
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/7653Measuring, controlling or regulating mould clamping forces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/77Measuring, controlling or regulating of velocity or pressure of moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/78Measuring, controlling or regulating of temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76498Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76531Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76551Time
    • B29C2945/76561Time duration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76595Velocity
    • B29C2945/76598Velocity linear movement

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of unleaded faucet inner core, including inner core body, the inner core body is food grade plastic material inner core, is internally provided with interconnected intake tunnel and exhalant canal;Nut inserts, the nut inserts are fixed on the inside of the intake tunnel inlet;Protective case, the protective case complete cycle gapless are wrapped in the outside of the inner core body.The invention further particularly discloses a kind of above-mentioned production methods of unleaded faucet inner core.By using the unleaded faucet inner core not only material non-toxic of above-mentioned technique production, without lead, meet the demand that people are healthy, environmentally friendly for drinking water now, and in daily installation, transport or handling process, unleaded faucet inner core is not easily susceptible to damage, and the quality of product is made to have certain guarantee.In addition, the unleaded faucet inner core also has, intensity is high, product function is reliable and stable, long service life, and the advantage that manufacturing cost is cheap, manufacture is easy is conducive to expanding production and popularization and use.

Description

A kind of unleaded faucet inner core and preparation method thereof
Technical field
The present invention relates to bathroom or technical field of taps for kitchen use, concretely relate to a kind of unleaded faucet inner core And preparation method thereof.
Background technique
Currently, the production method of unleaded faucet inner core in the market is as follows: nut inserts being put into Internal core mould first Interior, straight forming is at product after then plastic cement is injected into mold cavity by certain technical parameter by injection molding machine.Due to nothing Lead water faucet inner core is made of using plastic material, and intensity is relatively limited, and its after mounting between shell there are Certain space, therefore inner core molding in this way is easy to be damaged in subsequent assembling and transportational process, gives finished product Installation cause certain hidden danger of quality.
And in the prior art in order to overcome this above-mentioned technical problem, be mostly make a search in the material of inner core, although The material of high quality can be effectively solved the above problem, but but also because making material expense it is high due to considerably increase nothing The cost of manufacture of lead water faucet inner core makes this unleaded faucet inner core be difficult to be generalized application.In addition, being there are also a kind of structure Loose iron sand is filled between inner core and shell, but is found after actually using, and this structure can not play very inner core Good buffer function, inner core are still easily damaged.
Therefore design a kind of not easily damaged and low manufacture cost unleaded faucet inner core, be those skilled in the art urgently Problem to be solved.
Summary of the invention
In view of this, to overcome the problems, such as the above-mentioned prior art, the present invention provides a kind of unleaded faucet inner core and its Production method.
To achieve the goals above, the present invention adopts the following technical scheme:
On the one hand, the present invention provides a kind of unleaded faucet inner cores, including
Inner core body, the inner core body are food grade plastic material inner core, and it is logical to be internally provided with interconnected water inlet Road and exhalant canal;
Nut inserts, the nut inserts are fixed on the inside of the intake tunnel inlet;
Protective case, the protective case complete cycle gapless are wrapped in the outside of the inner core body.
By using above-mentioned technical proposal, a kind of unleaded faucet inner core of the present invention, firstly, inner core body uses food-grade Plastic material is made, and ensure that passed through water quality is unaffected;Enter secondly, nut inserts has been fixed on intake tunnel Inside at mouthful, when it is connected with hose tooth head, it can be ensured that the intensity of the junction is enough, does not influence hot and cold water in high pressure Enter inner core body under state;Again, the present invention inner core body external complete cycle it is gapless wrapped up one layer of protective case, should Protective case can be made it be not easily susceptible to damage in daily installation, transport or handling process, be mentioned significantly with effective protection inner core The high quality of unleaded faucet inner core, at the same time, because of simple processing, the cost of material is low, and the present invention is compared to the prior art Also there is very big cost advantage, there is very strong product competitiveness in the market.
Based on the above technical solution, the present invention can also make following improvement:
Preferably, the intake tunnel includes cold water channel and hot water channel, and there are two the nut inserts, is fixed respectively In the inside of the cold water channel, the inlet of the hot water channel.
Preferably, the inner core body between the cold water channel, the hot water channel and exhalant canal connection One is equipped with for installing the gap slot of spool, offers opening corresponding with the gap slot on the protective case.
Preferably, the inner core body and the protective case are an integral molding structure.
Inner core body and protective case integrated injection molding not only make inner core body structure stronger and are not easy to reveal, Entire unleaded faucet inner core is made to be provided with self structure intensity simultaneously high, reliable and stable, long service life, manufacturing cost is low Honest and clean advantage.
On the other hand, the present invention also provides a kind of production methods of unleaded faucet inner core, comprising the following steps:
S1: the molding of inner core body
A, inner core body mold is installed on injection molding machine, adjusts die height and injection molding machine nozzle, the temperature of barrel;
B, technological parameter is set, technological parameter include injection pressure and speed, injection time, cooling time, die sinking position, It is opened pressure and speed, clamping pressure and speed;
C, when injection molding machine nozzle, the temperature of barrel reach set temperature value, mold is opened, by the nut of state's dimensioning Inserts is put on the fixation position of mold, then shuts mold;
D, after the food grade plastic materials on injection molding machine being heated by injecting machine material tube, then by the food grade plastic of melting Material injection enters in mold cavity, and after supercooling and pressure maintaining, the inner core body of the molding inserts containing nut is taken out in die sinking Part;
S2: the stabilization of inner core body and the inspection of nut inserts
The inner core body of the inserts after molding containing nut is subjected to room temperature standing, while checking that the tooth size of nut inserts is No variation;
S3: the test of inner core body
The inner core body of the inserts containing nut after stabilization is attached to the test that hydraulic pressure, flow are carried out on examination wetting system, confirmation Whether it complies with standard;
S4: the molding of protective case
A, protection mold is installed on injection molding machine, adjusts die height and injection molding machine nozzle, the temperature of barrel;
B, technological parameter is set, technological parameter include injection pressure and speed, injection time, cooling time, die sinking position, It is opened pressure and speed, clamping pressure and speed;
C, when injection molding machine nozzle, the temperature of barrel reach set temperature value, mold is opened, it will be in inserts containing nut Core ontology is put on the fixation position of mold, then shuts mold;
D, after heating the injected plastics material on injection molding machine by injecting machine material tube, then the injected plastics material of melting is injected into mould Tool type is intracavitary, and after supercooling and pressure maintaining, unleaded faucet inner core product is taken out in die sinking;
E, unleaded faucet inner core product is put into 15-25 DEG C of water, is taken out after 4-8 minutes;
S5: the inspection of nut inserts and the test of unleaded faucet inner core
It checks whether the tooth size of the nut inserts of molding unleaded faucet inner core product completely changes, finally again will Unleaded faucet inner core is attached to the test that hydraulic pressure, flow are carried out on examination wetting system, and finished product is completed after complying with standard.
Preferably, in step sl, inner core body mold is installed on injection molding machine, adjustment die height to just mode locking Until locked mode pressure reaches 40-60Mpa afterwards, then injection molding machine nozzle stabilization is transferred to 190-210 DEG C, the first segment temperature of barrel 185-205 DEG C, 180-200 DEG C of the second segment temperature of barrel.
Preferably, in step sl, technological parameter is arranged are as follows:
Injection pressure and speed: first segment injection pressure is 35-55bar, injection speed 30-50cm/s;Second segment note Injection pressure is 30-50bar, injection speed 25-45cm/s;
Injection time: 5-7s;
Cooling time: 15-25s;
Die sinking position: 280-320mm;
Be opened pressure and speed: it is 30-50bar, opening speed 30-50cm/s that first segment, which is opened pressure,;Second segment is opened Molding pressure is 40-60bar, opening speed 50-70cm/s;It is 40-60bar, opening speed 35- that third section, which is opened pressure, 55cm/s;
Clamping pressure and speed: first segment clamping pressure is 30-50bar, closure pressing speed 35-55cm/s;Second segment closes Molding pressure is 40-60bar, closure pressing speed 50-70cm/s;Third section clamping pressure is 30-50bar, closure pressing speed 30- 50cm/s。
Preferably, in step s 2, the time that the inner core body room temperature of the inserts after molding containing nut is stood is that 22-26 is small When.
Preferably, in step s 4, protection mold is installed on injection molding machine, after adjusting die height to just mode locking Until locked mode pressure reaches 40-60Mpa, then injection molding machine nozzle stabilization is transferred to 170-190 DEG C, the first segment temperature 165- of barrel 185 DEG C, 160-180 DEG C of the second segment temperature of barrel.
Preferably, in step s 4, technological parameter is arranged are as follows:
Injection pressure and speed: first segment injection pressure is 63-83bar, injection speed 25-45cm/s;Second segment note Injection pressure is 60-80bar, injection speed 25-45cm/s;Third section injection pressure is 55-75bar, injection speed 25- 45cm/s;
Injection time: 8-12s;
Cooling time: 45-55s;
Die sinking position: 280-320mm;
Be opened pressure and speed: it is 30-50bar, opening speed 30-50cm/s that first segment, which is opened pressure,;Second segment is opened Molding pressure is 40-60bar, opening speed 40-60cm/s;It is 40-60bar, opening speed 50- that third section, which is opened pressure, 70cm/s;
Clamping pressure and speed: first segment clamping pressure is 40-60bar, closure pressing speed 50-70cm/s;Second segment closes Molding pressure is 40-60bar, closure pressing speed 40-600cm/s;Third section clamping pressure is 30-50bar, closure pressing speed 20- 40cm/s。
By using the unleaded faucet inner core not only material non-toxic of above-mentioned technique production, lead is free of, people now is met For drinking water health, the demand of environmental protection, and in daily installation, transport or handling process, in unleaded tap Core is not easily susceptible to damage, and the quality of product is made to have certain guarantee.In addition, the unleaded faucet inner core also have intensity it is high, Product function is reliable and stable, long service life, and the advantage that manufacturing cost is cheap, manufacture is easy is conducive to expanding production and popularization It uses.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is a kind of main view of unleaded faucet inner core provided by the invention.
Fig. 2 attached drawing is the sectional view of A-A in Fig. 1.
Fig. 3 attached drawing is a kind of bottom view of unleaded faucet inner core provided by the invention.
Fig. 4 attached drawing is the sectional view of B-B in Fig. 3.
Fig. 5 attached drawing is a kind of top view of unleaded faucet inner core provided by the invention.
Fig. 6 attached drawing is a kind of left view of unleaded faucet inner core provided by the invention.
Fig. 7 attached drawing is a kind of right view of unleaded faucet inner core provided by the invention.
Fig. 8 attached drawing is a kind of rearview of unleaded faucet inner core provided by the invention.
Wherein, in figure,
1- inner core body,
11- intake tunnel, 12- exhalant canal, 13- gap slot;
2- nut inserts;
3- protective case,
31- opening.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can To be mechanical connection, it is also possible to be electrically connected;It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.
Embodiment:
As shown in figures 1-8, the embodiment of the invention discloses a kind of unleaded faucet inner cores comprising inner core body 1, inner core Ontology 1 is made using food grade plastic material, and it is logical that interconnected intake tunnel 11 and water outlet are equipped with inside inner core body 1 Road 12, intake tunnel 11 include cold water channel and hot water channel;Nut inserts 2, there are two nut inserts 2, is individually fixed in cold Aquaporin, hot water channel inlet inside;Protective case 3, protective case 3 complete cycle gapless are wrapped in the outside of inner core body 1 And inner core body 1 and protective case 3 are an integral molding structure.Between cold water channel, hot water channel and the connection of exhalant canal 12 Inner core body 1 be equipped with one for installing the gap slot 13 of spool, offered on protective case 3 corresponding with gap slot 13 Opening 31, spool are mounted on the unleaded faucet inner core by opening 31 and gap slot 13.
The embodiment of the invention also discloses a kind of production methods of unleaded faucet inner core, comprising the following steps:
S1: the molding of inner core body 1
A, inner core body mold is installed on injection molding machine, locked mode pressure reaches after adjusting die height to just mode locking Until 40-60Mpa, then injection molding machine nozzle stabilization is transferred to 190-210 DEG C, preferably 200 DEG C, the first segment temperature 185- of barrel 205 DEG C, preferably 195 DEG C, 180-200 DEG C of the second segment temperature of barrel, preferably 190 DEG C;
B, technological parameter is set, technological parameter include injection pressure and speed, injection time, cooling time, die sinking position, It is opened pressure and speed, clamping pressure and speed;
Specifically:
Injection pressure and speed: first segment injection pressure is 35-55bar, preferably 45bar, injection speed 30- 50cm/s, preferably 40cm/s;Second segment injection pressure be 30-50bar, preferably 40bar, injection speed 25-45cm/s, Preferably 35cm/s;
Injection time: 5-7s, preferably 6s;
Cooling time: 15-25s, preferably 20s;
Die sinking position: 280-320mm, preferably 300mm;
Be opened pressure and speed: it is 30-50bar, preferably 40bar, opening speed 30- that first segment, which is opened pressure, 50cm/s, preferably 40cm/s;Second segment be opened pressure be 40-60bar, preferably 50bar, opening speed 50-70cm/s, Preferably 60cm/s;Third section is opened pressure for 40-60bar, preferably 50bar, opening speed 35-55cm/s, preferably 45cm/s;
Clamping pressure and speed: first segment clamping pressure is 30-50bar, preferably 40bar, closure pressing speed 35- 55cm/s, preferably 45cm/s;Second segment clamping pressure be 40-60bar, preferably 50bar, closure pressing speed 50-70cm/s, Preferably 60cm/s;Third section clamping pressure be 30-50bar, preferably 40bar, closure pressing speed 30-50cm/s, preferably 40cm/s。
C, when injection molding machine nozzle, the temperature of barrel reach set temperature value, mold is opened, state's dimensioning is (excessively logical No-go gage) nut inserts 2 be put on the fixation position of mold, then shut mold;
D, after the food grade plastic materials on injection molding machine being heated by injecting machine material tube, then by the food grade plastic of melting Material injection enters in mold cavity, and after supercooling and pressure maintaining, the inner core body of molding inserts containing nut 2 is taken out in die sinking 1 part;
S2: the stabilization of inner core body 1 and the inspection of nut inserts 2
The inner core body 1 of inserts containing nut after molding 2 is subjected to room temperature and stands 22-26 hours, to ensure plastic core It can be formed and be eliminated as much as completely internal internal stress, prevent that unstable shape occurs in the subsequent use process of inner core body 1 Condition, while checking whether the tooth size of the nut inserts 2 in inner core body 1 keeps original size constancy using go-no go gauge;
S3: the test of inner core body 1
The inner core body 1 of inserts containing nut after stabilization 2 is attached to the survey that hydraulic pressure, flow are carried out on corresponding examination wetting system Examination, confirms whether hydraulic pressure and flow comply with standard;
S4: the molding of protective case 3
A, protection mold is installed on injection molding machine, locked mode pressure reaches 40- after adjusting die height to just mode locking Until 60Mpa, then injection molding machine nozzle stabilization is transferred to 170-190 DEG C, preferably 180 DEG C, the first segment temperature 165-185 of barrel DEG C, preferably 175 DEG C, 160-180 DEG C of the second segment temperature of barrel, preferably 170 DEG C;
B, technological parameter is set, technological parameter include injection pressure and speed, injection time, cooling time, die sinking position, It is opened pressure and speed, clamping pressure and speed;
Specifically:
Injection pressure and speed: first segment injection pressure is 63-83bar, preferably 73bar, injection speed 25- 45cm/s, preferably 35cm/s;Second segment injection pressure be 60-80bar, preferably 70bar, injection speed 25-45cm/s, Preferably 35cm/s;Third section injection pressure be 55-75bar, preferably 65bar, injection speed 25-45cm/s, preferably 35cm/s;
Injection time: 8-12s, preferably 10s;
Cooling time: 45-55s, preferably 50s;
Die sinking position: 280-320mm, preferably 300mm;
Be opened pressure and speed: it is 30-50bar, preferably 40bar, opening speed 30- that first segment, which is opened pressure, 50cm/s, preferably 40cm/s;Second segment be opened pressure be 40-60bar, preferably 50bar, opening speed 40-60cm/s, Preferably 50cm/s;Third section is opened pressure for 40-60bar, preferably 50bar, opening speed 50-70cm/s, preferably 60cm/s;
Clamping pressure and speed: first segment clamping pressure is 40-60bar, preferably 50bar, closure pressing speed 50- 70cm/s, preferably 60cm/s;Second segment clamping pressure be 40-60bar, preferably 50bar, closure pressing speed 40-60cm/s, Preferably 50cm/s;Third section clamping pressure be 30-50bar, preferably 40bar, closure pressing speed 20-40cm/s, preferably 30cm/s;
C, when injection molding machine nozzle, the temperature of barrel reach set temperature value, mold is opened, it will be molding in step S1 The inner core body 1 of inserts containing nut 2 is put on the fixation position of mold, then shuts mold;
D, after the injected plastics material on injection molding machine being heated by injecting machine material tube, then by the injected plastics material high-pressure injection of melting Enter in mold cavity, after supercooling, heat preservation and pressure maintaining, unleaded faucet inner core product is taken out in die sinking;
E, unleaded faucet inner core product is put into 15-25 DEG C of water, is taken out after 4-8 minutes;
S5: the inspection of nut inserts and the test of unleaded faucet inner core
Check whether the tooth size of the nut inserts 2 of molding unleaded faucet inner core product completely changes, finally again Unleaded faucet inner core is attached to the test for carrying out hydraulic pressure, flow on examination wetting system, finished product is completed after complying with standard.
The following are relevant test datas of the invention:
(1), weight is tested: using 100 kilograms of object pressures respectively in the axially and radially direction of unleaded faucet inner core product Firmly 2 hours, there is no deformations for product, phenomena such as embrittlement.
(2), fall test again: the position vertical natural by unleaded faucet inner core product from 6 meters high is fallen down, and is hit in hard On face, there is no deforming embrittlement to product.
In addition, product of the present invention is detected through the maximum inspection in the whole world, test and certification authority SGS, while being closed to 198 kinds high Note substance (SVHC) carries out screening test, and material concentration is both less than 0.1%.
It is tests determined, the unleaded faucet inner core produced by the above method is environmentally friendly, it is nontoxic, be free of lead, Neng Gouman The sufficient people now demand healthy, environmentally friendly for drinking water, and in daily installation, transport or handling process, the knot The unleaded faucet inner core of structure is not easily susceptible to damage because of the protective action of protective case 3, and the quality of product is made to have certain guarantor Card.
The unleaded faucet inner core of the present invention also has intensity height, product function reliable and stable, long service life, manufacturing cost Advantage cheap, manufacture is easy, is conducive to expanding production and popularization and use.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims (10)

1. a kind of unleaded faucet inner core, which is characterized in that including
Inner core body (1), the inner core body (1) are food grade plastic material inner core, are internally provided with interconnected water inlet Channel (11) and exhalant canal (12);
Nut inserts (2), the nut inserts (2) are fixed on the inside of the intake tunnel (11) inlet;
Protective case (3), protective case (3) the complete cycle gapless are wrapped in the outside of the inner core body (1).
2. a kind of unleaded faucet inner core according to claim 1, which is characterized in that the intake tunnel (11) includes cold Aquaporin and hot water channel, there are two the nut inserts (2), is individually fixed in the cold water channel, the hot water channel The inside of inlet.
3. a kind of unleaded faucet inner core according to claim 2, which is characterized in that the cold water channel, the hot water Channel connect with the exhalant canal (12) between the inner core body (1) be equipped with one for installing the gap slot of spool (13), opening (31) corresponding with the gap slot (13) is offered on the protective case (3).
4. a kind of unleaded faucet inner core according to claim 1, which is characterized in that the inner core body (1) and described Protective case (3) is an integral molding structure.
5. a kind of production method of unleaded faucet inner core, which comprises the following steps:
S1: the molding of inner core body (1)
A, inner core body mold is installed on injection molding machine, adjusts die height and injection molding machine nozzle, the temperature of barrel;
B, technological parameter is set, and technological parameter includes injection pressure and speed, injection time, cooling time, die sinking position, die sinking Pressure and speed, clamping pressure and speed;
C, when injection molding machine nozzle, the temperature of barrel reach set temperature value, mold is opened, by the nut inserts of state's dimensioning (2) it is put on the fixation position of mold, then shuts mold;
D, after the food grade plastic materials on injection molding machine being heated by injecting machine material tube, then by the food grade plastic materials of melting It is injected into mold cavity, after supercooling and pressure maintaining, the inner core body of molding inserts containing nut (2) is taken out in die sinking (1) part;
S2: the stabilization of inner core body (1) and the inspection of nut inserts (2)
The inner core body (1) of inserts containing nut after molding (2) is subjected to room temperature standing, while checking the tooth of nut inserts (2) Whether size changes;
S3: the test of inner core body (1)
The inner core body (1) of inserts containing nut (2) after stabilization is attached to the test that hydraulic pressure, flow are carried out on examination wetting system, really Recognize whether it complies with standard;
S4: the molding of protective case (3)
A, protective case (3) mold is installed on injection molding machine, adjusts die height and injection molding machine nozzle, the temperature of barrel;
B, technological parameter is set, and technological parameter includes injection pressure and speed, injection time, cooling time, die sinking position, die sinking Pressure and speed, clamping pressure and speed;
C, when injection molding machine nozzle, the temperature of barrel reach set temperature value, mold is opened, the interior of nut inserts (2) will be contained Core ontology (1) is put on the fixation position of mold, then shuts mold;
D, after heating the injected plastics material on injection molding machine by injecting machine material tube, then the injected plastics material of melting is injected into mould type Intracavitary, after supercooling and pressure maintaining, unleaded faucet inner core product is taken out in die sinking;
E, unleaded faucet inner core product is put into 15-25 DEG C of water, is taken out after 4-8 minutes;
S5: the inspection of nut inserts (2) and the test of unleaded faucet inner core
It checks whether the tooth size of the nut inserts (2) of molding unleaded faucet inner core product completely changes, finally again will Unleaded faucet inner core is attached to the test that hydraulic pressure, flow are carried out on examination wetting system, and finished product is completed after complying with standard.
6. a kind of production method of unleaded faucet inner core according to claim 5, which is characterized in that in step sl, Inner core body mold is installed on injection molding machine, locked mode pressure reaches 40-60Mpa and is after adjusting die height to just mode locking Only, then injection molding machine nozzle is stablized and is transferred to 190-210 DEG C, 185-205 DEG C of the first segment temperature of barrel, the second segment temperature of barrel 180-200℃。
7. a kind of production method of unleaded faucet inner core according to claim 5, which is characterized in that in step sl, Technological parameter setting are as follows:
Injection pressure and speed: first segment injection pressure is 35-55bar, injection speed 30-50cm/s;Second segment injection pressure Power is 30-50bar, injection speed 25-45cm/s;
Injection time: 5-7s;
Cooling time: 15-25s;
Die sinking position: 280-320mm;
Be opened pressure and speed: it is 30-50bar, opening speed 30-50cm/s that first segment, which is opened pressure,;Second segment mold breakaway cylinder Power is 40-60bar, opening speed 50-70cm/s;It is 40-60bar, opening speed 35-55cm/ that third section, which is opened pressure, s;
Clamping pressure and speed: first segment clamping pressure is 30-50bar, closure pressing speed 35-55cm/s;Second segment molding pressure Power is 40-60bar, closure pressing speed 50-70cm/s;Third section clamping pressure is 30-50bar, closure pressing speed 30-50cm/ s。
8. a kind of production method of unleaded faucet inner core according to claim 5, which is characterized in that in step s 2, The time that inner core body (1) room temperature of inserts containing nut (2) after molding is stood is 22-26 hours.
9. a kind of production method of unleaded faucet inner core according to claim 5, which is characterized in that in step s 4, Protective case (3) mold is installed on injection molding machine, locked mode pressure reaches 40-60Mpa and is after adjusting die height to just mode locking Only, then injection molding machine nozzle is stablized and is transferred to 170-190 DEG C, 165-185 DEG C of the first segment temperature of barrel, the second segment temperature of barrel 160-180℃。
10. a kind of production method of unleaded faucet inner core according to claim 5, which is characterized in that in step s 4, Technological parameter setting are as follows:
Injection pressure and speed: first segment injection pressure is 63-83bar, injection speed 25-45cm/s;Second segment injection pressure Power is 60-80bar, injection speed 25-45cm/s;Third section injection pressure is 55-75bar, injection speed 25-45cm/ s;
Injection time: 8-12s;
Cooling time: 45-55s;
Die sinking position: 280-320mm;
Be opened pressure and speed: it is 30-50bar, opening speed 30-50cm/s that first segment, which is opened pressure,;Second segment mold breakaway cylinder Power is 40-60bar, opening speed 40-60cm/s;It is 40-60bar, opening speed 50-70cm/ that third section, which is opened pressure, s;
Clamping pressure and speed: first segment clamping pressure is 40-60bar, closure pressing speed 50-70cm/s;Second segment molding pressure Power is 40-60bar, closure pressing speed 40-60cm/s;Third section clamping pressure is 30-50bar, closure pressing speed 20-40cm/ s。
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