CN102275278B - Exhaust device of hot runner cylinder and exhaust method thereof - Google Patents
Exhaust device of hot runner cylinder and exhaust method thereof Download PDFInfo
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- CN102275278B CN102275278B CN201110188546.0A CN201110188546A CN102275278B CN 102275278 B CN102275278 B CN 102275278B CN 201110188546 A CN201110188546 A CN 201110188546A CN 102275278 B CN102275278 B CN 102275278B
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- air valve
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Abstract
The invention relates to an exhaust device of a hot runner cylinder and an exhaust method thereof. The device comprises a first air valve (1), a piston (3), a valve needle (4) and a cylinder (5), the two ends of which are communicated with the first air valve (1). And the valve needle (4) is installed on the piston (3). The exhaust device also includes a second air valve (2), the air outlet of which is in connection with the air inlet of the first air valve (1). The device of the invention increases the exhaust function of the hot runner cylinder. When a product demoulds, as no air pressure exists in the cylinder, the valve needle of the cylinder does no harm to moulded products, thus effectively guaranteeing the product quality.
Description
Technical field
The present invention relates to adapted to injection system, especially the device of hot runner cylinder of adapted to injection system and method for exhausting thereof.
Background technology
In complicated adapted to injection system, the forming technique of Hot runner Technology and high gloss mold is also used in the actual production and operation more and more, by increasing the function of injection-moulding device, goes the production that meets and improve high light product.
At present, the mould of injection machine is used the technology of hot flow path very universal, on high gloss mold, use also more and more, because the surface quality requirement of high light product is very harsh, so the cylinder valve needle movement state of hot flow path is also very large on the impact of product quality, the method for generally using on injection machine is at present: adopt special-purpose hot flow path air valve, during energising, needle is opened, during power-off, needle is closed, and has the existence of air pressure in cylinder always.This mode can meet general mould and produce, but at high gloss mold, particularly on the inverted mold of Gao Guang, just can not reach the quality requirements of product, on the high light face of product, can leave the vestige that air valve motion produces, cause scrapping of product, can not meet user demand.
Summary of the invention
The object of the invention is in injection machine, when existing hot flow path air valve opens and closes, valve needle movements can leave the problem of air valve motion vestige on the high light face of product, proposes a kind of device of hot runner cylinder and method for exhausting thereof.Increased after hot flow path cylinder exhaust function, when product stripping, owing to there is no air pressure in cylinder, the needle of cylinder just can not damage the product of moulding, and the quality of product is just effectively guaranteed.
Technical scheme of the present invention is:
A kind of device of hot runner cylinder, it comprises the first air valve, piston, needle and cylinder, and the two ends of described cylinder communicate with the first air valve, and needle is arranged on piston, it is characterized in that this exhaust apparatus also comprises the second air valve, the gas outlet of the second air valve is connected with the air inlet of the first air valve.
A cylinder exhaust method, it comprises the following steps:
(a), the gas outlet of the second air valve is connected to the air inlet of the first air valve, compressed air enters the first air valve from the second air valve;
(b), open the first air valve, the coil of the first air valve obtains electric, spool is moved to the left, compressed air enters cylinder by the first air valve
bchamber, the piston in cylinder is moved to the left, and piston driving needle is moved to the left, and opens the path of hot flow path material, and material enters in mould cavity;
(c), injection moulding charging enters the mold cools down stage after completing, and closes the first air valve, the first air valve coil losing electricity, the first air valve moves right;
(d), during die sinking, open the second air valve, the coil of the second air valve obtains electric, and spool is moved to the left, cylinder
bgas in chamber is successively by discharging after the first air valve, the second air valve;
bpressure in chamber is discharged, and has cut off the compressed air that P1 is ordered, and the two ends of hot flow path cylinder all do not have compressed-air actuated entering, and piston is in unloaded state, and needle does not have thrust to the right, has just eliminated the pressure of needle to product, and product just can not be out of shape.
Beneficial effect of the present invention:
The present invention has increased hot flow path cylinder exhaust function, and when product stripping, owing to there is no air pressure in cylinder, the needle of cylinder just can not damage the product of moulding, and the quality of product is just effectively guaranteed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, a kind of device of hot runner cylinder, it comprises the first air valve 1, piston 3, needle 4 and cylinder 5, the two ends of described cylinder 5 communicate with the first air valve 1, needle 4 is arranged on piston 3, this exhaust apparatus also comprises that the gas outlet of the second air valve 2, the second air valves 2 is connected with the air inlet of the first air valve 1.
A cylinder exhaust method, application device of hot runner cylinder, it comprises the following steps:
(a), the coil blackout of the second air valve 2, compressed air enters the first air valve 1 from the second air valve 2;
(b), the coil of opening the first air valve 1, the first air valve 1 obtains electricly, spool is moved to the left, compressed air is entered the B chamber of cylinder 5 by the first air valve 1, the piston 3 in cylinder 2 is moved to the left, and piston 3 drives needle 4 to be moved to the left, open the path of hot flow path material, material enters in mould cavity;
(c), injection moulding charging enters the mold cools down stage after completing, and closes the first air valve 1, the first air valve 1 coil losing electricity, the first air valve 1 moves right;
(d), during die sinking, open the second air valve 2, the coil of the second air valve 2 obtains electric, and spool is moved to the left, and the pressure in cylinder (5) B chamber is discharged, and cut off the compressed air that P1 is ordered, the two ends of hot flow path cylinder all do not have compressed-air actuated entering, and piston is in unloaded state, and needle does not have thrust to the right, just eliminated the pressure of needle to product, product just can not be out of shape.
During concrete enforcement:
The workflow that does not increase air valve two is: in the time of normal operation, compressed air enters air valve one from P1 point, air valve one is controlled and is opened and closed by outside delay controller, when the coil of air valve one obtain electric after, spool moves, compressed air enters B point by P1 point by air valve one, and promote cylinder piston and retreat, piston driving needle moves, open the path of hot flow path material, melted material enters in injection moulding die cavity, air valve one coil blackout after injection moulding charging completes, air valve core automatically resets by back-moving spring, after resetting, compressed air enters A point by P1 point, the reach of promotion cylinder piston, needle is closed the path of hot flow path material, hot flow path is closed, now A point keeps compressed-air actuated pressure always, piston keeps state forward.
The workflow that increases air valve two is: in the time of normal operation, compressed air enters from P point, because air valve two coil is in off-position, directly enters P1 point, enters air valve one, and operation principle is the same.When the coil of air valve two obtains when electric, the spool of air valve moves, and has cut off the compressed air that P1 is ordered, and the two ends of hot flow path cylinder all do not have compressed-air actuated entering, and piston is in unloaded state, and needle does not have thrust forward.
In the time of injection moulding machine mould open, air valve two starts action, has cut off the compressed air that P1 is ordered, and the compressed air in cylinder is discharged, and needle has not had the promotion of air pressure.When die sinking, air tube can not arrive product in stressed top, forms the distortion of product, and after certain hour, air valve quits work, and the needle of hot flow path is closed.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (1)
1. a hot flow path cylinder exhaust method, application device of hot runner cylinder, described device of hot runner cylinder comprises the first air valve (1), piston (3), needle (4) and cylinder (5), the two ends of described cylinder (5) communicate with the first air valve (1), needle (4) is arranged on piston (3), it is characterized in that this exhaust apparatus also comprises the second air valve (2), the gas outlet of the second air valve (2) is connected with the air inlet of the first air valve (1);
Described hot flow path cylinder exhaust method comprises the following steps:
(a), the gas outlet of the second air valve (2) is connected to the air inlet of the first air valve (1), compressed air enters the first air valve (1) from the second air valve (2);
(b), open the first air valve (1), the coil of the first air valve (1) obtains electric, spool is moved to the left, compressed air enters cylinder (5) by the first air valve (1)
bchamber, the piston (3) in cylinder (2) is moved to the left, and piston (3) drives needle (4) to be moved to the left, and opens the path of hot flow path material, and material enters in mould cavity;
(c), injection moulding charging enters the mold cools down stage after completing, and closes the first air valve (1), the first air valve (1) coil losing electricity, the first air valve (1) moves right;
(d), during die sinking, open the second air valve (2), the coil of the second air valve (2) obtains electric, and spool is moved to the left, cylinder (5)
bgas in chamber is successively by discharging after the first air valve (1), the second air valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188546.0A CN102275278B (en) | 2011-07-06 | 2011-07-06 | Exhaust device of hot runner cylinder and exhaust method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188546.0A CN102275278B (en) | 2011-07-06 | 2011-07-06 | Exhaust device of hot runner cylinder and exhaust method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102275278A CN102275278A (en) | 2011-12-14 |
| CN102275278B true CN102275278B (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110188546.0A Expired - Fee Related CN102275278B (en) | 2011-07-06 | 2011-07-06 | Exhaust device of hot runner cylinder and exhaust method thereof |
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| Country | Link |
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| CN (1) | CN102275278B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0635350A1 (en) * | 1993-07-20 | 1995-01-25 | Incoe Corporation | Pneumatic control device for hot runner needle valves for injection moulds |
| CN2647551Y (en) * | 2003-07-17 | 2004-10-13 | 上海克朗宁技术设备有限公司 | Hot runner pneumatic needle valve type single-nozzle cylinder for injection moulding |
| CN202278719U (en) * | 2011-07-06 | 2012-06-20 | 南京华格电汽塑业有限公司 | Hot runner cylinder exhaust apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2727416B2 (en) * | 1994-12-14 | 1998-03-11 | 小島プレス工業株式会社 | Mold structure and in-mold molding machine used in in-mold molding method |
| DE102005042850B3 (en) * | 2005-09-09 | 2007-03-15 | Incoe International, Inc. | Pneumatic actuator for controlling the gate of needle valve nozzles in an injection molding plant |
-
2011
- 2011-07-06 CN CN201110188546.0A patent/CN102275278B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0635350A1 (en) * | 1993-07-20 | 1995-01-25 | Incoe Corporation | Pneumatic control device for hot runner needle valves for injection moulds |
| CN2647551Y (en) * | 2003-07-17 | 2004-10-13 | 上海克朗宁技术设备有限公司 | Hot runner pneumatic needle valve type single-nozzle cylinder for injection moulding |
| CN202278719U (en) * | 2011-07-06 | 2012-06-20 | 南京华格电汽塑业有限公司 | Hot runner cylinder exhaust apparatus |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平8-164538A 1996.06.25 |
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| CN102275278A (en) | 2011-12-14 |
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Granted publication date: 20140115 Termination date: 20140706 |
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