CN103707466A - Hot runner valve gate for large-sized die - Google Patents
Hot runner valve gate for large-sized die Download PDFInfo
- Publication number
- CN103707466A CN103707466A CN201310738532.0A CN201310738532A CN103707466A CN 103707466 A CN103707466 A CN 103707466A CN 201310738532 A CN201310738532 A CN 201310738532A CN 103707466 A CN103707466 A CN 103707466A
- Authority
- CN
- China
- Prior art keywords
- hot runner
- gate
- cast gate
- runner valve
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012505 colouration Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/278—Nozzle tips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a hot runner valve gate for a large-sized die. The hot runner valve gate comprises a valve needle 1 and a hot runner 2 and is characterized in that edges 3 on the two sides of the gate section of the hot runner 2 form an included angle of 90 degrees, and edges 4 on the two sides of the port section of the valve needle 1 form an included angle of 40 degrees. The hot runner valve gate can be sequentially energized for heating or de-energized along with a cyclic injection molding process, namely materials at the gate are melted before the injection operation each time, and the gate part is condensed in pressure preservation and cooling stages, so that radial stripes and condensed material blocks on parts can be avoided, or cold-setting condensation phenomena at the gate part is avoided; the gate section of the hot runner and the port section of the valve needle are further improved, so that the advantages are further optimized, and for the large-sized die, the injection molding cycle is also greatly shortened, and the production efficiency is improved.
Description
Technical field
The design relates to large mold hot runner valve cast gate, belongs to injection mold technical field.
Background technology
Must be smooth to meet requirement attractive in appearance at many fields cast gates such as medical treatment, electronics, office equipment.As some auto parts need spray colouration after moulding, if there is injection mo(u)lding to fuse line on these parts, the color and luster of so painted rear part will be different, cannot meet quality requirement; In medical field, people are very strict to medical plastic part cast gate quality requirement, cannot have sharp projection etc.Otherwise if just in case the bad skin consequence of stabbing of thorn is serious in use.In this case, also only reliable valve gate flow passage system improves product cast gate quality.Because of valve gate, by needle mechanical action, close, be not subject to the restriction of cool time of cast gate place plastics, so valve gate flow passage system can shorten plastic sometimes greatly, produce molding cycle.Gate size can also be opened largerly, and this is very beneficial to shear sensitive plastics to processing.Valve gate method can be processed the finding of several grammes per square metres, also can process the large part of several kilogram weights.Various engineering plastics can be used valve gate processing part.If there are a plurality of die cavities that vary in size in a mold, as adopted valve formula flow passage system can, by the control of switch time of each cast gate, to realize, the mobile of each die cavity to be adjusted respectively and be controlled.The a mould with multi-cavities that this differs greatly to geomery, meaning is particularly great.Also have for large-duty, there is the mould of multilayer die joint, also only have by adopting valve formula TOP-TIP to realize.
Summary of the invention
For the deficiencies in the prior art, the design's object is to provide a kind of large mold hot runner valve cast gate.
For achieving the above object, the design realizes by following technological means:
A large mold hot runner valve cast gate, comprises needle 1 and hot flow path 2, it is characterized in that: the angle of described hot flow path 2 both sides, cast gate cross section crest lines 3 is 90 °, and the angle of described needle 1 both sides, port cross section crest line 4 is 40 °.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: described needle 1 control device adopts the pneumatic or mode of surging of magnetic valve.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: described hot flow path 2 gate sizes are φ 5-8mm.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: the material of described needle 1 is stainless steel or steel alloy.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: described large mold hot runner valve cast gate is applicable to the injection mold that plastic part size is greater than 490mm * 490mm * 490mm.
The invention has the beneficial effects as follows: adopt hot runner valve cast gate, can be with switch on the successively heating or disconnect of injection cycle process, i.e. the material at melting cast gate place before per injection action, in pressurize and condensation gate portions of cooling stage; Therefore, on parts, can not produce radioactivity striped, condensation material piece; Or at cast gate position, there is the cold phenomenon of admittedly condensing.This design, by the improvement to heat flow passage sprue and needle port cross section further, has not only been optimized above-mentioned advantage further, and for large mold, also very big low shortening injection cycle, has improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the design's structural representation.
The implication of drawing reference numeral is as follows: 1 needle-valve, 2 hot flow paths, 3 both sides, heat flow passage sprue cross section crest lines, 4 both sides, needle port cross section crest lines.
The specific embodiment
Below in conjunction with Figure of description, design is further described.
As shown in Figure 1. a kind of large mold hot runner valve cast gate, comprise needle 1 and hot flow path 2, it is characterized in that: the angle of described hot flow path 2 both sides, cast gate cross section crest lines 3 is 90 °, the angle of described needle 1 both sides, port cross section crest line 4 is 40 °.
Runner 2 both sides, cast gate cross section crest lines 3 adopt the angle of 90 °, when injection moulding large mold, can make plastics flow to fast die cavity, shorten injection cycle; Needle 1 both sides, port cross section crest line 4 adopts the angle of 40 °, when guaranteeing injection moulding efficiency, can reduce gate size, further improves the fineness on injection machine surface.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: described needle 1 control device adopts the pneumatic or mode of surging of magnetic valve.
The mechanical action device of needle can adopt hydraulic oil or Compressed Gas to control.Accurate effectively with the switch motion of hydraulic oil method needle.But the plastic part of likely making dirty in process of production.Therefore when producing medical plastic products, must adopt Compressed Gas control method to produce, clean to guarantee goods.In addition because the use of needle control device can increase the height of stationary mould for mould and unitary mould.When carrying out Design of Dies and injection machine selection, should take in.In the template that needle control device is installed, also need to arrange cooling water channel.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: described hot flow path 2 gate sizes are φ 5-8mm.
Gate size is opened largerly, not only greatly shortens plastic and produces molding cycle, also very beneficial to shear sensitive plastics to processing.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: the material of described needle 1 is stainless steel or steel alloy.
Preferably, described a kind of large mold hot runner valve cast gate, is characterized in that: described large mold hot runner valve cast gate is applicable to the injection mold that plastic part size is greater than 490mm * 490mm * 490mm.
Because the design's hot flow path 2 gate sizes are φ 5-8mm, be the upper limit of hot runner valve gate size substantially, on large injection mold, the effect that shortens injection cycle is obvious especially.
More than show and described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. a large mold hot runner valve cast gate, comprise needle (1) and hot flow path (2), it is characterized in that: the angle of described hot flow path (2) cast gate cross section both sides crest lines (3) is 90 °, the angle of described needle (1) port cross section both sides crest lines (4) is 40 °.
2. a kind of large mold hot runner valve cast gate as claimed in claim 1, is characterized in that: described needle (1) control device adopts the pneumatic or mode of surging of magnetic valve.
3. a kind of large mold hot runner valve cast gate as claimed in claim 1, is characterized in that: described hot flow path (2) gate size is φ 5-8mm.
4. a kind of large mold hot runner valve cast gate as claimed in claim 1, is characterized in that: the material of described needle (1) is stainless steel or steel alloy.
5. a kind of large mold hot runner valve cast gate as claimed in claim 1, is characterized in that: described large mold hot runner valve cast gate is applicable to the injection mold that plastic part size is greater than 490mm * 490mm * 490mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738532.0A CN103707466A (en) | 2013-12-30 | 2013-12-30 | Hot runner valve gate for large-sized die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738532.0A CN103707466A (en) | 2013-12-30 | 2013-12-30 | Hot runner valve gate for large-sized die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103707466A true CN103707466A (en) | 2014-04-09 |
Family
ID=50400997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310738532.0A Pending CN103707466A (en) | 2013-12-30 | 2013-12-30 | Hot runner valve gate for large-sized die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103707466A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559613A (en) * | 2022-03-09 | 2022-05-31 | 施江波 | Nitrogen needle valve for hot runner injection mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010903A (en) * | 1974-06-27 | 1977-03-08 | Torazo Saito | Nozzle for injection molding of thermoplastics |
| US5338182A (en) * | 1989-06-13 | 1994-08-16 | Hosokawa Seisakusho Co., Ltd. | Pressure molding apparatus for molten resin |
| CN203712977U (en) * | 2013-12-30 | 2014-07-16 | 晟扬精密模具（昆山）有限公司 | Hot runner valve gate for large mold |
-
2013
- 2013-12-30 CN CN201310738532.0A patent/CN103707466A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010903A (en) * | 1974-06-27 | 1977-03-08 | Torazo Saito | Nozzle for injection molding of thermoplastics |
| US5338182A (en) * | 1989-06-13 | 1994-08-16 | Hosokawa Seisakusho Co., Ltd. | Pressure molding apparatus for molten resin |
| CN203712977U (en) * | 2013-12-30 | 2014-07-16 | 晟扬精密模具（昆山）有限公司 | Hot runner valve gate for large mold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559613A (en) * | 2022-03-09 | 2022-05-31 | 施江波 | Nitrogen needle valve for hot runner injection mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140409 |