CN201342779Y - Inner bore water inflow and outflow type water assisted injection molding water pin - Google Patents
Inner bore water inflow and outflow type water assisted injection molding water pin Download PDFInfo
- Publication number
- CN201342779Y CN201342779Y CNU2009201124434U CN200920112443U CN201342779Y CN 201342779 Y CN201342779 Y CN 201342779Y CN U2009201124434 U CNU2009201124434 U CN U2009201124434U CN 200920112443 U CN200920112443 U CN 200920112443U CN 201342779 Y CN201342779 Y CN 201342779Y
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- water
- liquid drugs
- mould
- drugs injection
- sleeve pipe
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Abstract
An inner bore water inflow and outflow type water assisted injection molding water pin comprises a mould. A mounting hole is formed on the mould; a water pin is mounted in the mounting hole; the water pin comprises a water pin sleeve and a water pin core bar arranged in the water pin sleeve; a water inflow passage and an air inflow passage are arranged in the mould; a water supply device is connected to the outside of the water inflow passage; and an air supply device is connected to the outside of the air inflow passage. The water pin is characterized in that a clearance is formed between the water pin sleeve and a water pin core bar and communicated with the air inflow passage and a mould cavity; a water tank is formed at the middle part of the water pin sleeve; the water tank is communicated with the water inflow passage; and a water inflow opening is formed in the tail part of the water pin sleeve and is communicated with the water tank and the mould cavity. In the technical scheme, the water pin system integrates the functions of water inflow, air inflow and water drainage, has the advantages of simple constitution, convenient manufacture and processing, compact structure, small volume, suitability for various moulds, and stable properties, can prevent gas form leaking, can prevent aqueous medium and plastic melts form overflowing, and further can drain the water in a water channel effectively, so as to achieve the purpose of reasonable water resource recovery.
Description
Technical field
The utility model relates to the injection moulding production system of water secondary process plastic product, particularly relates to the liquid drugs injection of the auxilliary injection moulding of water.
Background technology
Water assisted plastic injection molding technology is to be come by the gas assisted injection molding technology development in recent years, it is one of up-to-date injection molding technology, described gas assisted plastic injection molding technology is to adopt nitrogen as forming cavity in the working media injected plastic melt, the shortcoming of the auxilliary Plastics Injection Molding Technology of gas is: the one, because lower conductivity of heat and the thermal capacitance of gas, cooling effect is still undesirable; The 2nd, still there are various defectives and relatively large residual wall thickness for the production of the bigger product of physical dimension or inner chamber; The 3rd, control accuracy and repeatability are bad; The 4th, gas assisted molding is not suitable for making thin-walled parts, especially to surperficial quality requirements high product.Described water assisted plastic injection molding technology is to utilize the running water of process filtration as working media, aqueous medium has Incoercibility with respect to gas, high thermoconductivity, advantages such as high specific heat capacity, make water shaping have shorter cool time and molding cycle than gas assisted molding, (inner surface is smooth for higher product quality, thickness is even etc.), lower production cost and the advantages such as production efficiency of Geng Gao, in plastic melt, form cavity by water moulding water-fluid pressure system generation water under high pressure and fast injection, technical process is as follows: at first inject melt in the die cavity of mould, and by a valve sealing die cavity end, after treating that melt is full of die cavity fully, when opening water injection valve, the flash valve is opened, the melt in the middle of thereby the water that makes injection can promote enters overflowing well, the overflowing well chamber is sealed, can realize pressurize, water can pass through gravity, evaporation or injection dry air are discharged from and remove.But when utilizing method drainings such as gravity and evaporation, be not easy to recycle-water, be unfavorable for environmental protection, water resource waste is big.A kind of liquid drugs injection that water shaping is produced that is applied to is disclosed as number of patent application 200710164642.5, by the direct sealing between needle guard and mould, core bar and the needle guard, realize the zero leakage of gas and water, and this liquid drugs injection can be finished all water supply and sewage functions of the required water inlet of water shaping technology, air inlet and draining, but there is following defective: the first, the complex structure of liquid drugs injection core bar and liquid drugs injection sleeve pipe is as being shaped on shoulder hole in the liquid drugs injection core bar, the processing trouble, technology cost height; The second, the liquid drugs injection core bar relies on spring transfer function power, and the oral area of liquid drugs injection core bar and liquid drugs injection sleeve pipe is opened, thereby realizes water inlet and draining, and the unstable properties of spring easily lost efficacy; The 3rd, its water inlet flow channel is two different runners with the draining runner, complex structure, processing trouble; The 4th, whole liquid drugs injection device volume is big, can not be used for little mould, and the scope of application is limited.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming that prior art exists, a kind of water inlet, air inlet and draining, simple structure of integrating to be provided, manufacturing, easy to process, compact conformation, volume is little, applicable to various moulds, the scope of application is extensive, and stable performance can prevent that gas from leaking, and can prevent that again aqueous medium and plastic melt from overflowing, can also effectively discharge the water in the water channel, reach the auxilliary injection molding water needle of endoporus turnover ability of swimming water of reasonable recycle-water resource.
The technical scheme of the auxilliary injection molding water needle of the utility model endoporus turnover ability of swimming water is: comprise mould, mould is shaped on installing hole, liquid drugs injection is housed in the installing hole, described liquid drugs injection comprises the liquid drugs injection core bar in liquid drugs injection sleeve pipe and the liquid drugs injection sleeve pipe, be shaped on water inlet flow channel and air inlet runner in the mould, water inlet flow channel connects water supply installation outward, air inlet runner connects feeder outward, it is characterized in that between described liquid drugs injection sleeve pipe and the liquid drugs injection core bar gapped, its gap is communicated with the die cavity of air inlet runner and mould, and the middle part of liquid drugs injection sleeve pipe is shaped on tank, and tank is communicated with water inlet flow channel, be shaped on the inlet opening in the afterbody of liquid drugs injection sleeve pipe, the inlet opening is communicated with the die cavity of tank and mould.
The auxilliary injection molding water needle of the utility model endoporus turnover ability of swimming water, its liquid drugs injection core bar and liquid drugs injection sleeve pipe are matched in clearance, its gap is very little, gases at high pressure are passed through, but can prevent plastic melt and aqueous reflux, institute is so that water inlet flow channel, tank, inlet opening and die cavity remain unimpeded state, water inlet and draining are convenient, and need not to rely on spring to promote to realize water inlet and draining, and simple in structure, stable performance.After being full of plastic melt in the die cavity, water under high pressure is from water inlet flow channel, tank, the inlet opening enters in the die cavity always, water under high pressure promotes plastic melt fast and travels forward, form the penetration by water effect, make goods form uniform wall thickness, afterwards, gases at high pressure are from entering the water cavity in the goods after air inlet runner enters slit between liquid drugs injection core bar and liquid drugs injection sleeve pipe again, water in the water cavity is cemented out, the water that displaces flows into tank again from the inlet opening, get back in the original water supply installation after water inlet flow channel is discharged, and reaches the purpose of reasonable recycle-water resource, draining runner and water inlet flow channel are same runner, easily manufactured, compact conformation, volume is little, be applicable to various big and small moulds, the scope of application is extensive.In addition, that liquid drugs injection sleeve pipe and liquid drugs injection core bar have is simple in structure, be convenient to processing, integrated design, high reliability features, is suitable for producing in serial form.
The auxilliary injection molding water needle of the utility model endoporus turnover ability of swimming water, the head of its described liquid drugs injection sleeve pipe and the installing hole of mould are for being threaded, and effectively fixedly the liquid drugs injection core bar can prevent that again gas from leaking, and is threaded and also is convenient to dismantle and keep in repair.The head of its described liquid drugs injection sleeve pipe is installed the sealing ring first with the afterbody that is threaded between the installing hole of mould, and sealing herein can be guaranteed not leak from the gases at high pressure of air inlet runner.Its described inlet opening be by circumference evenly distributed more than two or three or three, equally distributed inlet opening can guarantee effectively that water under high pressure injects melt quickly and evenly, the inlet opening diameter is little, can prevent that melt from overflowing.Its described inlet opening is an oblique through hole from top to bottom, makes water inlet fast.Sealing ring second is installed between the afterbody of its described liquid drugs injection sleeve pipe and the installing hole of mould, seals herein, guarantee when gas displacement water, not reveal gas, do not fall thereby gas is keep-uped pressure to forming sealing near the water filling port end.Axially being parallel to each other of the sprue of its described water inlet flow channel and air inlet runner and liquid drugs injection core bar is convenient to connect outside water feed apparatus and inlet duct.Its described liquid drugs injection sleeve pipe and liquid drugs injection core bar are made by stainless steel material, can guarantee that liquid drugs injection sleeve pipe and liquid drugs injection core bar have good reliability and service life in the aqueous medium working environment of the auxilliary injection molding process of water.
Description of drawings
Fig. 1 is the structural representation of the auxilliary injection molding water needle of the utility model endoporus turnover ability of swimming water;
Fig. 2 is the structural representation of liquid drugs injection sleeve pipe;
Fig. 3 is the A-A cross-sectional schematic of Fig. 2.
The specific embodiment
The utility model discloses the auxilliary injection molding water needle of endoporus turnover ability of swimming water, as shown in Figure 1, comprise mould, mould comprises die cavity 13 and core 15, die cavity 13 and core 15 constitute the die cavity 22 of goods, mould is shaped on installing hole, liquid drugs injection is housed in the installing hole, described liquid drugs injection comprises the liquid drugs injection core bar in liquid drugs injection sleeve pipe and the liquid drugs injection sleeve pipe, be shaped on water inlet flow channel and air inlet runner in the mould, water inlet flow channel connects water supply installation outward, and air inlet runner connects feeder outward, it is characterized in that between described liquid drugs injection sleeve pipe 4 and the liquid drugs injection core bar 8 gapped, its gap is communicated with the die cavity 22 of air inlet runner 12 and mould, and the middle part of liquid drugs injection sleeve pipe 4 is shaped on tank 5, and tank 5 is communicated with water inlet flow channel 11, be shaped on inlet opening 6 in the afterbody of liquid drugs injection sleeve pipe 4, inlet opening 6 is communicated with the die cavity 22 of tank 5 and mould.The liquid drugs injection core bar 8 and the liquid drugs injection sleeve pipe 4 of the technical program are matched in clearance, its gap is very little, gases at high pressure are passed through, but can prevent plastic melt and aqueous reflux, institute is so that water inlet flow channel 11, tank 5, inlet opening 6 and die cavity 22 remain unimpeded state, and water inlet and drainage real time are carried out, and need not to rely on spring to promote to realize water inlet and draining, simple in structure, stable performance.After plastic melt is full of die cavity 22, water under high pressure is from water inlet flow channel 11, tank 5, inlet opening 6 enters in the die cavity 22 always, water under high pressure promotes plastic melt fast and travels forward, form the penetration by water effect, make goods form uniform wall thickness, afterwards, gases at high pressure enter the water cavity 23 that enters again behind the slit of 4 of liquid drugs injection core bar 8 and liquid drugs injection sleeve pipes in the goods 21 from air inlet runner 12, water in the water cavity 23 is cemented out, the water that displaces is the 6 inflow tanks 5 from the inlet opening again, get back in the original water supply installation after water inlet flow channel 11 is discharged, and reach the purpose of reasonable recycle-water resource, draining runner and water inlet flow channel are same runner, compact conformation, easily manufactured, in addition, the liquid drugs injection core bar has simple in structure, be convenient to processing, integrated design, high reliability features is suitable for producing in serial form.Because the structure of mould itself is just quite complicated, so preferably whole liquid drugs injection system is installed in the other slide block, slide block again with cover half (relative motionless part, it may be die cavity, it also may be core, concrete structure according to mould is decided) fix, make slide block become the part of cover half, be convenient to make, install.The head of its described liquid drugs injection sleeve pipe 4 and the installing hole of mould are for being threaded, and effectively fixedly the liquid drugs injection core bar can prevent that again gas from leaking, and are threaded and also are convenient to dismounting and maintenance.The head of its described liquid drugs injection sleeve pipe 4 is installed sealing ring first 3 with the afterbody that is threaded between the installing hole of mould, and sealing herein can be guaranteed not leak from the gases at high pressure of air inlet runner.As Fig. 2, shown in Figure 3, its described inlet opening 6 be by circumference evenly distributed more than two or three or three, equally distributed inlet opening can guarantee effectively that water under high pressure injects melt quickly and evenly, the inlet opening diameter is little, can prevent that melt from overflowing.Its described inlet opening 6 is oblique through holes from top to bottom, and oblique through hole is to lead to the die cavity oral area from the bottom of tank 5, and the bottom of tank 5 is higher than die cavity 22 oral areas, makes water inlet fast.Sealing ring second 7 is installed between the afterbody of its described liquid drugs injection sleeve pipe 4 and the installing hole of mould, seals herein, guarantee when gas displacement water, not reveal gas, do not fall thereby gas is keep-uped pressure to forming sealing near the water filling port end.The sprue of its described water inlet flow channel 11 and air inlet runner 12 axially are parallel to each other with liquid drugs injection core bar 8, promptly are convenient to connect outside water feed apparatus and inlet duct.Because water inlet flow channel is not straight hole, its sprue is vertical with secondary channels, so secondary channels is difficult for processing, advises when reality is made, and gets out secondary channels from the opposite side of mould and communicates with sprue, blocks the opening of secondary channels again with plug 10.Its described liquid drugs injection sleeve pipe 4 and liquid drugs injection core bar 8 are made by stainless steel material, can guarantee that liquid drugs injection sleeve pipe and liquid drugs injection core bar have good reliability and service life in the aqueous medium working environment of the auxilliary injection molding process of water.
Claims (8)
1, the auxilliary injection molding water needle of endoporus turnover ability of swimming water, comprise mould, mould is shaped on installing hole, liquid drugs injection is housed in the installing hole, described liquid drugs injection comprises the liquid drugs injection core bar in liquid drugs injection sleeve pipe and the liquid drugs injection sleeve pipe, be shaped on water inlet flow channel and air inlet runner in the mould, water inlet flow channel connects water supply installation outward, air inlet runner connects feeder outward, it is characterized in that between described liquid drugs injection sleeve pipe (4) and the liquid drugs injection core bar (8) gapped, its gap is communicated with the die cavity (22) of air inlet runner (12) and mould, the middle part of liquid drugs injection sleeve pipe (4) is shaped on tank (5), tank (5) is communicated with water inlet flow channel (11), is shaped on inlet opening (6) in the afterbody of liquid drugs injection sleeve pipe (4), and inlet opening (6) are communicated with the die cavity (22) of tank (5) and mould.
2, the auxilliary injection molding water needle of endoporus as claimed in claim 1 turnover ability of swimming water, the head that it is characterized in that described liquid drugs injection sleeve pipe (4) and the installing hole of mould are for being threaded.
3, the afterbody installation sealing ring first (3) that is threaded between the auxilliary injection molding water needle of endoporus as claimed in claim 2 turnover ability of swimming water, the head that it is characterized in that described liquid drugs injection sleeve pipe (4) and the installing hole of mould.
4, the auxilliary injection molding water needle of endoporus as claimed in claim 1 turnover ability of swimming water, it is characterized in that described inlet opening (6) be by circumference evenly distributed more than two or three or three.
5, the auxilliary injection molding water needle of endoporus turnover ability of swimming water as claimed in claim 4 is characterized in that described inlet opening (6) is an oblique through hole from top to bottom.
6, installation sealing ring second (7) between the auxilliary injection molding water needle of endoporus as claimed in claim 1 turnover ability of swimming water, the afterbody that it is characterized in that described liquid drugs injection sleeve pipe (4) and the installing hole of mould.
7, the auxilliary injection molding water needle of endoporus turnover ability of swimming water as claimed in claim 1 is characterized in that the sprue of described water inlet flow channel (11) and axially being parallel to each other of air inlet runner (12) and liquid drugs injection core bar (8).
8, the auxilliary injection molding water needle of endoporus as claimed in claim 1 turnover ability of swimming water is characterized in that described liquid drugs injection sleeve pipe (4) and liquid drugs injection core bar (8) made by stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201124434U CN201342779Y (en) | 2009-01-06 | 2009-01-06 | Inner bore water inflow and outflow type water assisted injection molding water pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201124434U CN201342779Y (en) | 2009-01-06 | 2009-01-06 | Inner bore water inflow and outflow type water assisted injection molding water pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201342779Y true CN201342779Y (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201124434U Expired - Fee Related CN201342779Y (en) | 2009-01-06 | 2009-01-06 | Inner bore water inflow and outflow type water assisted injection molding water pin |
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| CN (1) | CN201342779Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848520A (en) * | 2012-09-18 | 2013-01-02 | 宁波舜宇模具有限公司 | Water needle device for water-assisted injection molding production |
-
2009
- 2009-01-06 CN CNU2009201124434U patent/CN201342779Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848520A (en) * | 2012-09-18 | 2013-01-02 | 宁波舜宇模具有限公司 | Water needle device for water-assisted injection molding production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20130106 |