CN1059377C - Improved combined return-flow-proof and anti-leakage automatic injection moulding jet-nozzle - Google Patents
Improved combined return-flow-proof and anti-leakage automatic injection moulding jet-nozzle Download PDFInfo
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- CN1059377C CN1059377C CN96107102A CN96107102A CN1059377C CN 1059377 C CN1059377 C CN 1059377C CN 96107102 A CN96107102 A CN 96107102A CN 96107102 A CN96107102 A CN 96107102A CN 1059377 C CN1059377 C CN 1059377C
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- valve body
- nozzle
- hand member
- spool
- spring
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Abstract
The present invention relates to an improved and combined refluxing and leakage preventing automatic injection molding nozzle which is composed of a connecting component, a valve body and a nozzle cap integrally screwed by threads, wherein a spring arranged in the valve body only pushes a leakage preventing valve core matched with the ejecting opening of the nozzle cap. A refluxing preventing valve core matched with the valve seat sealing opening of the connecting component is in a floating state. The number of through holes communicated with a front storing chamber and a back storing chamber in the valve body are six. The improved nozzle has the advantages of low energy consumption and high efficiency. The guiding bases of the two valve cores are detachable, and thus, the replacement is convenient. The guiding bases are also provided with hexagonal screws which are outward protruded, and thus, the guiding bases can be assembled and disassembled without special tools. The product by the injection molding of the nozzle can reduce the phenomena of water shrinkage and dragged threads. The present invention becomes an excellent nozzle in injection molding industry.
Description
The present invention relates to a kind of combined type anti-return, anti-leak automatic injection moulding jet-nozzle, flexible member of particularly a kind of usefulness is realized the combined type automatic injection moulding jet-nozzle of anti-return and anti-leak simultaneously.
The process of general injection mo(u)lding is that the molten plastic under the high temperature is injected in the mould via an injection molding nozzle.Usually adopt oil pressure or pneumatic equipment, handle the screw rod or the spiral propeller of a rotation, described molten plastic is pressed in the mould by described nozzle, keeping plastics with heater simultaneously is molten condition.After filling with plastics in the mould, described screw rod retreats.At this moment, be easy to generate " shrink " phenomenon, promptly plastics reflux, and cause in-molded product distortion.Also can produce " dragging silk " phenomenon, promptly plastics leak.
In order to solve the common above-mentioned shortcoming of nozzle in the prior art, I had once submitted the application for a patent for invention that portion is entitled as " combined automatic injection nozzle with anti-reflux and anti-leak junction " on June 8th, 1991 to Patent Office of the People's Republic of China, in duly authorized on February 6 in 1994, the patent No. was ZL91103816.7 to this application.In the related nozzle of foregoing invention patent, be provided with a spring, respectively withstand an anti-return spool and an anti-leak spool about described spring, when injection moulding one finishes, can cut off the connection between mould and the nozzle automatically, thereby overcome the total shortcoming of various nozzles in the prior art.Yet the nozzle that ZL91103816.7 disclosed also has some a fly in the ointment, is to insert in the guide hole that is opened in the valve body center such as the guide rod of anti-leak spool, after the guide hole wearing and tearing, must change whole valve body; In addition, because the anti-return spool also withstands described spring, molten plastic must have elevated pressures can be pressed into nozzle; Or the like.
Purpose of the present invention provides a kind of modified combined automatic injection nozzle with anti-reflux and anti-leak junction, and its medi-spring only withstands the anti-leak spool, and the anti-return spool is a free floating, can reduce the operating pressure of barrel; And the corresponding guide hole of the guide rod of anti-leak spool institute, be opened in separately in the loose parts, so that the wearing and tearing back is changed.
Modified combined automatic injection nozzle with anti-reflux and anti-leak junction of the present invention comprises a threaded connector; A valve body; And nozzle cap.Described threaded connector, valve body and nozzle cap mat are threaded and are fixed as one.Described valve body hollow, in be provided with a spring, described spring only withstands the anti-leak spool on its left side, its right the anti-return spool be the free floating state.The guide rod of described anti-leak spool inserts in the guide hole of a dismountable guide bracket, described guide bracket mat screw thread and being fixed on the described valve body.In addition, the plastics through hole in the valve body changes six into by original four, with enlargement discharge, increases work efficiency.
The nozzle that nozzle of the present invention and ZL91103816.7 patent are disclosed is compared, and has following advantage:
1) because the anti-return spool changes quick condition into, makes the required pressure of injection moulding be reduced to 4/5, saved energy consumption.
2) guide rod because of the anti-leak spool inserts in the detachable article, so can only change this part after the guide hole inner wall abrasion, needn't change whole valve body.
3) be equipped with the hex nut of protrusion because of the guide bracket of two spools, convenient disassembly need not use specific purpose tool.
4) because the plastics through hole in the valve body changes six into by four, it is about 1/3 that flow is added, and improved operating efficiency.
5) because spring pressurized only, so prolonged service life.
6) the related nozzle of former invention, for ease of loading and unloading, cubic bar shape is processed at its valve body middle part; Among the present invention, owing to offered six plastics through holes in the valve body, so cylinder is reduced to a pair of.Like this, not only loading and unloading are still convenient, increased the intensity of valve body simultaneously.
Below with reference to accompanying drawing, modified nozzle of the present invention is described in further detail.
Fig. 1 is the half sectional view of modified nozzle of the present invention;
Fig. 2 is the cutaway view of nozzle of the present invention along B-B among Fig. 1.
With reference to accompanying drawing, modified combined automatic injection nozzle with anti-reflux and anti-leak junction of the present invention comprises 1, one valve body 2 of a threaded connector, and a nozzle cap 3, described threaded connector 1, valve body 2 and nozzle cap 3, and mat is threaded and is fixed as one.Described threaded connector 1 right-hand member center is formed with a plastic of conduit 11, is provided with a filter 14 in the described passage 11.The left end of described threaded connector 1 forms the plastics storage chamber 13 of an expansion, and described storage chamber right-hand member is formed with a valve seat and seals 12, and its left end is provided with the internal thread that is screwed into for valve body 2.Described valve body 2 is a hollow structure, and its outside is provided with the heater (not shown), and inside is installed on a spring 4, the left and right anti-leak spool 5 and the anti-return spool 6 of respectively being provided with of described spring.The left end guide rod of described spool 6 partly inserts among the guide bracket 8 in the heart guide hole 81, and its right-hand member is formed with and suitablely can be located in described valve seat and seals the conical surface on 12, described guide bracket 8 mat screw threads and be screwed into described valve body 2 right-hand members.The guide rod of described spool 5 right-hand members partly inserts among the guide bracket 7 in the heart guide hole 71.In the described valve body 2, offer the plastics through hole 21 that is no less than four along a concentric circles.Described nozzle cap 3 right-hand member mat screw threads and be screwed into described valve body 2 left ends, be formed with another plastics storage chamber 31 in the nozzle cap, its left end is formed with a jet 32, the right-hand member of described jet 32 is formed with and seals 321, described spool 5 left ends are formed with a conical surface and a straight-bar, described straight-bar inserts described jet 32, seals 321 and cooperates and the described conical surface is suitable and described.
Characteristics of the present invention are that described anti-return spool 6 is floating type, is not withstood by spring 4.The right-hand member of described anti-leak spool 5 is formed with the boss 51 that props up with described spring 4, described guide bracket 7, mat screw thread and be screwed into described valve body 2.In addition, described guide bracket 7 and 8 all is formed with protrusion hexagonal spiral shell head outside, and described through hole 21 in nozzle of the present invention, is made as six, and the cylindrical shape lateral surface of valve body 2 is processed into a pair of cylinder 22 at the middle part.
Below sketch the working condition of nozzle of the present invention.
At ordinary times, because the effect of spring 4, the jet 32 of nozzle cap left end closes dead.The right-hand member of this nozzle feed mechanism of plugging into.After molten plastic is injected into logical material 11, at first filter through filter 14, some foreign material of elimination back down spool 6 easily then and enter storage chamber 13, and enter another storage chamber 31 via through hole 21.Because the pressure of molten plastic is very high, pretends the conical surface that is used for spool 5 left ends, make spool 5 overcome the elastic force of spring 4 and move to right, then jet 32 to be opened, molten plastic just injects with described jet 32 and seals in the mould of connections.
Fill molten plastic in mould, when the screw rod of feeder retreated, because the molten plastic pressure in mould and the nozzle just forces unsteady anti-return spool 6 to move to right greater than the pressure in the feeder barrel, its conical surface then sealed 12 with valve seat and shuts.Subsequently, because the molten plastic cooled and solidified in the mould, its pressure reduces rapidly, and spring 4 makes it to move to left and closes jet 32 dead with regard to pushing tow anti-leak spool 5.
The same with ZL91103816.7, the resistant to elevated temperatures chrome alum alloy of spring 4 usefulness of nozzle of the present invention is made.Valve body 2 middle parts offer a pair of radial direction through hole 23, use heat radiation and allow a small amount of plastics discharge.
Claims (4)
1, a kind of modified combined return-flow-proof and anti-leakage automatic injection moulding material nozzle, comprise a threaded connector (1), a valve body (2), an and nozzle cap (3), described threaded connector (1), valve body (2) and nozzle cap (3), mat is threaded and is fixed as one, described threaded connector (1) right-hand member center is formed with a plastic of conduit (11), be provided with a filter (14) in the described passage (11), the left end of described threaded connector (1) forms the plastics storage chamber (13) of an expansion, described storage chamber right-hand member is formed with a valve seat and seals (12), and its left end be provided with for valve body (2) be screwed within screw thread, described valve body (2) is a hollow structure, its outside is provided with heater, and inside is installed on a spring (4), the left side of described spring, right-hand member respectively is provided with anti-leak spool (5) and anti-return spool (6), the left end guide rod of described spool (6) partly inserts among the guide bracket (8) in the heart guide hole (81), its right-hand member is formed with and suitable can be located in described valve seat and seal the conical surface on (12), described guide bracket (8) mat screw thread and be screwed into described valve body (2) right-hand member, the guide rod of described spool (5) right-hand member partly inserts among the guide bracket (7) in the heart guide hole (71), described nozzle cap (3) right-hand member mat screw thread and be screwed into described valve body (2) left end, be formed with another plastics storage chamber (31) in the nozzle cap, its left end is formed with a jet (32), the right-hand member of described jet (32) is formed with and seals (321), described spool (5) left end is formed with a conical surface and a straight-bar, described straight-bar inserts described jet (32), cooperate with described sealing (321) and the described conical surface is suitable, it is characterized in that, described anti-return spool (6) is floating type, do not withstood by spring (4), the right-hand member of described anti-leak spool (5) is formed with the boss (51) that props up with described spring (4), described guide bracket (7), mat screw thread and being screwed in the described valve body (2), and guide bracket (7) and guide bracket (8) all are formed with protrusion hexagonal spiral shell head outside, in the described valve body (2), offer six plastics through holes (21) along a concentric circles.
2, injection molding nozzle according to claim 1 is characterized in that, described valve body (2) middle part offers a pair of radial direction through hole (23).
3, injection molding nozzle according to claim 1 is characterized in that described spring (4) is made with the chrome alum alloy.
4, as injection molding nozzle as described in the claim 2, it is characterized in that described spring (4) is made with the chrome alum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107102A CN1059377C (en) | 1996-06-28 | 1996-06-28 | Improved combined return-flow-proof and anti-leakage automatic injection moulding jet-nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96107102A CN1059377C (en) | 1996-06-28 | 1996-06-28 | Improved combined return-flow-proof and anti-leakage automatic injection moulding jet-nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1169355A CN1169355A (en) | 1998-01-07 |
| CN1059377C true CN1059377C (en) | 2000-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96107102A Expired - Fee Related CN1059377C (en) | 1996-06-28 | 1996-06-28 | Improved combined return-flow-proof and anti-leakage automatic injection moulding jet-nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059377C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092119B (en) * | 2010-12-22 | 2013-05-29 | 吉林大学珠海学院 | Pin-shaped self-locking nozzle device |
| CH710339A1 (en) * | 2014-11-06 | 2016-05-13 | Fostag Formenbau Ag | Co-injection nozzle with integrated check valve for an injection molding apparatus for manufacturing multi-layer injection molding products. |
| CN105082461A (en) * | 2015-09-14 | 2015-11-25 | 林勇 | Chip removal type anti-overflowing nozzle |
| CN105499741B (en) * | 2015-12-11 | 2019-05-17 | 天津普路特科技有限公司 | It is a kind of on inner heating type electric iron can singlehanded control self-filled type solder horn |
| CN112060480A (en) * | 2020-07-14 | 2020-12-11 | 马鞍山久特新材料科技有限公司 | Polyurethane casting machine with functions of liquid guiding and self-sealing |
| CN117087096B (en) * | 2023-08-26 | 2024-03-26 | 青岛佳友模具科技有限公司 | Vertical injection molding device for injection mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3491408A (en) * | 1967-10-13 | 1970-01-27 | Apl Corp | Valve adjuster and stop mechanism for an injection molding machine |
| US4043726A (en) * | 1975-05-21 | 1977-08-23 | Fuji Plastic Co. Ltd. | Hot runner type mold |
| CN1067607A (en) * | 1991-06-08 | 1993-01-06 | 谢桂深 | Combined automatic injection nozzle with anti-reflux and anti-leak junction |
-
1996
- 1996-06-28 CN CN96107102A patent/CN1059377C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3491408A (en) * | 1967-10-13 | 1970-01-27 | Apl Corp | Valve adjuster and stop mechanism for an injection molding machine |
| US4043726A (en) * | 1975-05-21 | 1977-08-23 | Fuji Plastic Co. Ltd. | Hot runner type mold |
| CN1067607A (en) * | 1991-06-08 | 1993-01-06 | 谢桂深 | Combined automatic injection nozzle with anti-reflux and anti-leak junction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1169355A (en) | 1998-01-07 |
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Granted publication date: 20001213 Termination date: 20130628 |