CN102371654A - Valve needle sealing device for needle valve type hot runner mold - Google Patents
Valve needle sealing device for needle valve type hot runner mold Download PDFInfo
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- CN102371654A CN102371654A CN2010102585011A CN201010258501A CN102371654A CN 102371654 A CN102371654 A CN 102371654A CN 2010102585011 A CN2010102585011 A CN 2010102585011A CN 201010258501 A CN201010258501 A CN 201010258501A CN 102371654 A CN102371654 A CN 102371654A
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- needle
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- valve needle
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- sealing device
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Abstract
The invention relates to a valve needle sealing device for a needle valve type hot runner mold. The valve needle sealing device comprises a fixed mold plate of the mold, wherein a splitter plate is connected to the lower side of the fixed mold plate and is connected with a cavity doubling plate; a runner sleeve is arranged in the splitter plate; a positioning ring is arranged on the runner sleeve; a main runner is formed in the runner sleeve; a sub runner is formed in the splitter plate; a spray nozzle is formed in the cavity doubling plate; the main runner, the sub runner and the spray nozzle are communicated with one another; an air cylinder cavity is formed in the fixed mold plate; an air cylinder cover is arranged on the air cylinder cavity; a piston is arranged in the air cylinder cavity; a piston screw is arranged in the piston; a valve needle is connected to the lower side of the piston screw; a valve needle sleeve is arranged in the splitter plate; the valve needle sleeve is matched with the valve needle in a sealing mode; and the head of the valve needle passes through the valve needle sleeve and the sub runner and is matched with the spray nozzle. The valve needle sealing device is characterized in that: the valve needle sleeve is a valve needle bolt; a thread hole is formed in the splitter plate; and the valve needle bolt is screwed in the thread hole. In the scheme, the valve needle bolt is replaced only for 3 to 5 minutes, so the replacement time is saved greatly, the production efficiency is improved, and the device has an extremely obvious effect.
Description
Technical field
The present invention relates to a kind of needle sealing device of needle valve hot runner mould, belong to the mould of plastics field, be applicable in all needle valve hot flow paths of injection mold.
Background technology
Adopt injection mold to produce plastic product, the injection moulding flow process of its plastic raw materials is: the plastic raw materials of fusion injects the mould sprue from injection machine, and the runner of flowing through arrives nozzle again; Inject mould cavity by nozzle,, need by hand the cast gate material to be cut so on the product after the injection mo(u)lding, all leave runner clout (cast gate material); Therefore time-consuming taking a lot of work developed the needle valve hot runner mould in recent years, and primary structure is included in the solid plate of mould and is shaped on cylinder chamber; Piston is installed in the cylinder chamber, and piston connects needle down, and the needle cover is installed in the flow distribution plate; Needle passes the needle cover and contacts with nozzle, and the needle cover is sealed and matched with needle, prevents that plastic raw materials from overflowing; After plastic raw materials injected mould cavity, cylinder drove needle work, and the runner clout of staying in runner and the nozzle (cast gate material) is clamp-oned in the die cavity; Making on the product after the moulding does not have the cast gate material, need not prune, and saves man-hour.But in actual production, because existing needle cover all is to inlay (fixed installation) in flow distribution plate, and the needle cover is sealed and matched with needle, and easy abrasion needs often to change at work.Connect when changing and need the hot flow path parts of mould all be opened owing to inlay, remove clout, cleaning part, very trouble.Particularly the mould of a multi-cavity mold is for example produced the plastic tube embryo, and a mould is produced 32 chambeies (individual) pipe embryo often; Perhaps a mould is produced 48 chambeies (individual) pipe embryo, or even the mould in 64 chambeies, just need the needle parts and the hot flow path parts in each chamber all be opened; Reinstall again, debug; Need expend 3-4 days man-hours, trouble very influences production efficiency.
Summary of the invention
The objective of the invention is provides a kind of employing thread connecting mode in order to overcome the shortcoming of prior art, and the needle cover is spun in the flow distribution plate, and loading and unloading are changed conveniently easily, save man-hour, the needle sealing device of the needle valve hot runner mould of enhancing productivity.
The technical scheme of the needle sealing device of needle valve hot runner mould of the present invention is: comprise the mould solid plate, solid plate connects flow distribution plate down, and flow distribution plate connects the die cavity compound plate, and flowing channel sleeve is installed in the flow distribution plate; Centring ring is arranged on the flowing channel sleeve, be shaped on sprue in the flowing channel sleeve, be shaped on runner in the flow distribution plate, be equipped with nozzle in the die cavity compound plate; Sprue, runner and nozzle interconnect, and are shaped on cylinder chamber in the described solid plate, and cylinder head is arranged on the cylinder chamber; Piston is installed in the cylinder chamber, piston screw is arranged in the piston, piston screw connects needle down; The needle cover is installed in flow distribution plate, and the needle cover is sealed and matched with needle, and the head of needle passes the needle cover and runner matches with nozzle; It is characterized in that described needle cover for the needle bolt, is shaped on screwed hole in the described flow distribution plate, the needle bolt is spun in the screwed hole.
The needle sealing device of needle valve hot runner mould of the present invention is embedded in existing needle cover in the flow distribution plate, changes the mode that is threaded that adopts now into, when needing to change; The cylinder cover of dismantling takes out piston, piston screw and needle, utilizes instrument to stretch in the cylinder chamber, and the needle bolt is screwed out from screwed hole; Single-piece is changed, and does not need all to open the mold hot flow parts, avoids ressembling, debugging; Change easily, easily, be specially adapted to the needle valve type hot runner mould of a multi-cavity mold, need expend 3-4 days man-hours and compare with existing; Change a needle bolt now, only need 3-5 minute, just can the needle bolt be screwed out; Saved the replacing time greatly, enhanced productivity, effect very significantly.
The needle sealing device of needle valve hot runner mould of the present invention is equipped with gasket seal between described needle bolt and the screwed hole, and gasket seal has been arranged, and needle bolt seals performance is good, prevents that plastic raw materials from overflowing.The top of described needle bolt be shaped on rotation usefulness interior hexagonal, outer-hexagonal, interior four jiaos or outer four jiaos and various rotating holes or limits such as quincunx or in-line; Can stretch in the cylinder chamber with instruments such as inner hexagon spanners during replacing; Dismounting needle bolt, very convenient.Described nozzle is the copper nozzle, and the heat conduction of copper nozzle is good, and non-corrosive, copper nozzle are equipped with shunting cover and insulating collar outward, prevents that heat scatters and disappears, and plastic cement can not solidify, and can produce continuously.Be shaped on 2 above runners in the described flow distribution plate, a needle bolt is installed in each runner, be applicable to the needle valve type hot runner mould of a multi-cavity mold, production efficiency is high.
Description of drawings
Fig. 1 is the needle schematic diagram of sealing device of needle valve hot runner mould of the present invention.
The specific embodiment
The present invention relates to a kind of needle sealing device of needle valve hot runner mould, as shown in Figure 1, comprise mould solid plate 1, solid plate connects flow distribution plate 2 down; Flow distribution plate connects die cavity compound plate 3, and flowing channel sleeve 19 is installed in the flow distribution plate, and centring ring 4 is arranged on the flowing channel sleeve; Be shaped on sprue 5 in the flowing channel sleeve, be shaped on runner 6 in the flow distribution plate, be equipped with nozzle 7 in the die cavity compound plate; Sprue, runner and nozzle interconnect, and are shaped on cylinder chamber 8 in the described solid plate 1, and cylinder head 14 is arranged on the cylinder chamber; Piston 9 is installed in the cylinder chamber, piston screw 10 is arranged in the piston, piston screw connects needle 11 down; The needle cover is installed in flow distribution plate 2, and the needle cover is sealed and matched with needle, and the head of needle 11 passes the needle cover and runner 6 matches with nozzle 7; It is characterized in that described needle cover for needle bolt 12, is shaped on screwed hole 13 in the described flow distribution plate 2, needle bolt 12 is spun in the screwed hole 13.This programme is embedded in existing needle cover in the flow distribution plate, changes the mode that is threaded that adopts now into, when needing to change, and the cylinder cover 14 of dismantling; Take out piston 9, piston screw 10 and needle 11, utilize instrument to stretch in the cylinder chamber 8, needle bolt 12 is screwed out from screwed hole 13; Single-piece is changed, and does not need all to open the mold hot flow parts, avoids ressembling, debugging; Change easily, easily, be specially adapted to the needle valve type hot runner mould of a multi-cavity mold, need expend 3-4 days man-hours and compare with existing; Change a needle bolt now, only need 3-5 minute, just can the needle bolt be screwed out; Saved the replacing time greatly, enhanced productivity, effect very significantly.Be equipped with gasket seal 16 between described needle bolt 12 and the screwed hole 13, gasket seal has been arranged, needle bolt seals performance is good, prevents that plastic raw materials from overflowing.The top of described needle bolt 12 is shaped on interior hexagonal 15, outer-hexagonal, interior four jiaos or outer four jiaos and various rotating holes or the limits such as quincunx or in-line that the top is shaped on rotation usefulness; Can stretch in the cylinder chamber with instruments such as inner hexagon spanners during replacing; Dismounting needle bolt, very convenient.Described nozzle 7 is the copper nozzle, and the heat conduction of copper nozzle is good, and non-corrosive, copper nozzle are equipped with shunting cover 17 and insulating collar 18 outward, prevents that heat scatters and disappears, and plastic cement can not solidify, and can produce continuously.Be shaped on 2 above runners 6 in the described flow distribution plate 2, a needle bolt 12 is installed in each runner 6, be applicable to the needle valve type hot runner mould of a multi-cavity mold, production efficiency is high.
Claims (5)
1. the needle sealing device of needle valve hot runner mould comprises mould solid plate (1), and solid plate connects flow distribution plate (2) down; Flow distribution plate connects die cavity compound plate (3), and flowing channel sleeve (19) is installed in the flow distribution plate, and centring ring (4) is arranged on the flowing channel sleeve; Be shaped on sprue (5) in the flowing channel sleeve, be shaped on runner (6) in the flow distribution plate, be equipped with nozzle (7) in the die cavity compound plate; Sprue, runner and nozzle interconnect, and are shaped on cylinder chamber (8) in the described solid plate (1), and cylinder head (14) is arranged on the cylinder chamber; Piston (9) is installed in the cylinder chamber, piston screw (10) is arranged in the piston, piston screw connects needle (11) down; The needle cover is installed in flow distribution plate (2), and the needle cover is sealed and matched with needle, and the head of needle (11) passes the needle cover and runner (6) matches with nozzle (7); It is characterized in that described needle cover for needle bolt (12), is shaped on screwed hole (13) in the described flow distribution plate (2), needle bolt (12) is spun in the screwed hole (13).
2. the needle sealing device of needle valve hot runner mould as claimed in claim 1 is characterized in that being equipped with gasket seal (16) between described needle bolt (12) and the screwed hole (13).
3. the needle sealing device of needle valve hot runner mould as claimed in claim 1 is characterized in that the top of described needle bolt (12) is shaped on the interior hexagonal (15) of rotation usefulness, outer-hexagonal, interior four jiaos or outer four jiaos and quincunx or in-line.
4. the needle sealing device of needle valve hot runner mould as claimed in claim 1 is characterized in that described nozzle (7) is the copper nozzle, and the copper nozzle is equipped with shunting cover (17) and insulating collar (18) outward.
5. the needle sealing device of needle valve hot runner mould as claimed in claim 1 is characterized in that being shaped in the described flow distribution plate (2) 2 above runners (6), and a needle bolt (12) is installed in each runner (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102585011A CN102371654A (en) | 2010-08-17 | 2010-08-17 | Valve needle sealing device for needle valve type hot runner mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102585011A CN102371654A (en) | 2010-08-17 | 2010-08-17 | Valve needle sealing device for needle valve type hot runner mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102371654A true CN102371654A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102585011A Pending CN102371654A (en) | 2010-08-17 | 2010-08-17 | Valve needle sealing device for needle valve type hot runner mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102371654A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192495A (en) * | 2013-04-12 | 2013-07-10 | 昆山腾宇鑫金属制品有限公司 | LED (light-emitting diode) die |
| CN104139496A (en) * | 2014-05-13 | 2014-11-12 | 张振岳 | Lens injection molding mould and injection molding method |
| CN109878028A (en) * | 2019-03-21 | 2019-06-14 | 柳道万和(苏州)热流道***有限公司 | Mold system and adapted to injection system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6294122B1 (en) * | 1998-06-26 | 2001-09-25 | Synventive Molding Solutions, Inc. | Electric actuator for a melt flow control pin |
| US6638049B1 (en) * | 1997-06-13 | 2003-10-28 | Synventive Molding Solutions, Inc. | Apparatus and method for proportionally controlling fluid delivery to readily replaceable mold inserts |
| DE202004007135U1 (en) * | 2004-05-03 | 2004-08-05 | Heitec-Heisskanaltechnik Gmbh | Support for a needle drive cylinder plate of a hot runner plastic injection molding tool comprises a circular block with an opening in which a seal with radial but no axial play is located |
| CN1684811A (en) * | 2002-07-30 | 2005-10-19 | 标准模具有限公司 | Valve pin guidance and alignment system for an injection molding apparatus |
| CN201147980Y (en) * | 2008-01-11 | 2008-11-12 | 广东国珠精密模具有限公司 | Needle valve type spray nozzle |
| CN101448619A (en) * | 2006-08-18 | 2009-06-03 | 爱维康热流道***有限及两合公司 | Needle valve nozzle |
| CN201792459U (en) * | 2010-08-17 | 2011-04-13 | 於岩君 | Valve needle sealing device of needle valve-type hot runner die |
-
2010
- 2010-08-17 CN CN2010102585011A patent/CN102371654A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6638049B1 (en) * | 1997-06-13 | 2003-10-28 | Synventive Molding Solutions, Inc. | Apparatus and method for proportionally controlling fluid delivery to readily replaceable mold inserts |
| US6294122B1 (en) * | 1998-06-26 | 2001-09-25 | Synventive Molding Solutions, Inc. | Electric actuator for a melt flow control pin |
| CN1684811A (en) * | 2002-07-30 | 2005-10-19 | 标准模具有限公司 | Valve pin guidance and alignment system for an injection molding apparatus |
| DE202004007135U1 (en) * | 2004-05-03 | 2004-08-05 | Heitec-Heisskanaltechnik Gmbh | Support for a needle drive cylinder plate of a hot runner plastic injection molding tool comprises a circular block with an opening in which a seal with radial but no axial play is located |
| CN101448619A (en) * | 2006-08-18 | 2009-06-03 | 爱维康热流道***有限及两合公司 | Needle valve nozzle |
| CN201147980Y (en) * | 2008-01-11 | 2008-11-12 | 广东国珠精密模具有限公司 | Needle valve type spray nozzle |
| CN201792459U (en) * | 2010-08-17 | 2011-04-13 | 於岩君 | Valve needle sealing device of needle valve-type hot runner die |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192495A (en) * | 2013-04-12 | 2013-07-10 | 昆山腾宇鑫金属制品有限公司 | LED (light-emitting diode) die |
| CN104139496A (en) * | 2014-05-13 | 2014-11-12 | 张振岳 | Lens injection molding mould and injection molding method |
| CN109878028A (en) * | 2019-03-21 | 2019-06-14 | 柳道万和(苏州)热流道***有限公司 | Mold system and adapted to injection system |
| CN109878028B (en) * | 2019-03-21 | 2024-06-04 | 柳道万和(苏州)热流道***有限公司 | Mold system and injection molding system |
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Application publication date: 20120314 |