CN203792642U - Injection mold flowing channel structure - Google Patents

Injection mold flowing channel structure Download PDF

Info

Publication number
CN203792642U
CN203792642U CN201420225971.1U CN201420225971U CN203792642U CN 203792642 U CN203792642 U CN 203792642U CN 201420225971 U CN201420225971 U CN 201420225971U CN 203792642 U CN203792642 U CN 203792642U
Authority
CN
China
Prior art keywords
runner
flowing channel
injection mold
branch
flow passage
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.)
Expired - Fee Related
Application number
CN201420225971.1U
Other languages
Chinese (zh)
Inventor
洪小英
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Information Technology College
Original Assignee
Sichuan Information Technology College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sichuan Information Technology College filed Critical Sichuan Information Technology College
Priority to CN201420225971.1U priority Critical patent/CN203792642U/en
Application granted granted Critical
Publication of CN203792642U publication Critical patent/CN203792642U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses an injection mold flowing channel structure. The injection mold flowing channel structure comprises a main flowing channel, a first branch flowing channel and second branch flowing channels. The bottom end of the main flowing channel is communicated with the middle of the first branch flowing channel, the two ends of the first branch flowing channel are respectively communicated with the middle of one second branch flowing channel, a material pulling structure is arranged on the communicated portion of the main flowing channel and the first branch flowing channel and is composed of a plurality of vertical material pulling pieces which are evenly distributed along the circumference of the outer wall of the main flowing channel, buffer structures are arranged on the communicated portions of the first branch flowing channel and the second branch flowing channels, the outer contour of each buffer structure is of a heart shape, the heart-shaped tip end of one longitudinal side of each buffer structure is connected with the first branch flowing channel, and the two transverse and opposite sides of each buffer structure are respectively connected with the corresponding second branch flowing channel. According to the injection mold flowing channel structure, it can be guaranteed that stub bars are left in a male mold, rubber powder is prevented from being generated when the flowing channels are ejected, through convergence of the buffer structures, the temperature of injection molding fluid on the diameter sections of the second branch flowing channels can approximately be evenly distributed, and the uniform quality of finished products in mold cavities is guaranteed.

Description

Flow passage structure of injection mold
Technical field
The utility model relates to mould structure design field, particularly relates to a kind of flow passage structure of injection mold.
Background technology
In modern industry, to the processing request of parts, be more and more higher.The processing of parts, mould is a key, various moulds arise at the historic moment.At present, existing ejection shaping die generally includes male model, master mold and runner, after this male model and master mold matched moulds, form a die cavity, hot runner is connected with die cavity, from the melt plastic cement of the hot mouth ejection of Jet forming machine, by this hot flow path, injects in this die cavity to mold injecting products.In this process, it is that side enters to water formula that general runner enters the mode of watering.The injection mold of prior art is when the complete die sinking of injection moulding, and stub bar is often stayed on master mold, thereby causes mould aborning, cannot realize normal automated production, cause occurring waste product, even the possibility of mechanical breakdown increases greatly, when serious, can affect normal production.Meanwhile, existing runner easily produces rubber powder when ejecting, and processes loaded down with trivial detailsly, and easily runner is pulled out in male model.
When injection mo(u)lding, the raw material of melting (hereinafter to be referred as injection moulding fluid) enters each runner through sprue, finally enters and in die cavity, forms finished product.The flow resistance of injection moulding fluid is directly proportional to viscosity, and the flow resistance of the less injection moulding fluid of viscosity is less, flows more smooth and easy, and vice versa.And the viscosity of injection moulding fluid generally raises and reduces with temperature.Because high rim in the middle of fluid velocity on section of diameter is low, form velocity gradient, it is shearing rate, the place's shearing rate that keeps to the side is large, cause edge's shearing friction heat-dissipating many, the temperature at place of keeping to the side is like this just high compared with other position on cross section, so just cause injection moulding fluid temperature on cross section in runner high to a lateral deviation, and then cause the imbalance of each die cavity filling speed, the impact of this imbalance of flow phenomenon is highly significant sometimes, makes the moulding quality of finished product in each die cavity have larger difference.
Utility model content
For above-mentioned the deficiencies in the prior art part, the utility model provides a kind of flow passage structure of injection mold, can avoid runner when ejecting, to produce rubber powder, and while guaranteeing die sinking, stub bar is stayed on male model, and make shaped article quality more consistent, thereby can solve the problems of the technologies described above completely.
The technical solution adopted in the utility model is:
A kind of flow passage structure of injection mold, comprise sprue, the first runner and the second runner, sprue bottom is communicated with the first runner middle part, the first runner two ends are communicated with a second runner middle part respectively, described sprue is communicated with position and is provided with and draws material structure with the first runner, this draws material structure to consist of some tablets that vertically draw of arranging along sprue outer wall even circumferential, the first runner is provided with buffer structure with the position that is communicated with of the second runner, the outline of this buffer structure is heart-shaped, the heart tip of the longitudinal side of buffer structure is connected with the first runner, the horizontal relative both sides of buffer structure are connected with the second runner respectively.
As preferably, described in draw tablet to have 6, the angle between adjacent 2 is 60 °.
As preferably, described buffer structure comprises relative arcwall and two relative vertical walls, and two arcwalls and the first runner are in smoothing junction, and two vertical walls are connected with the second runner.
As preferably, described vertical wall is heart-shaped, and two arcwalls extend along the vertical edge expansion of walls, and the curved contraction and then meet at central authorities to centre, thereby in mould, forms two concave surfaces.
As preferably, on the first runner of described sprue both sides, be all provided with and control the valve that the first runner is opened or closed.
As preferably, described valve is electromagnetic switch valve.
As preferably, the regulating spool that regulates this runner sectional area is all installed on the second runner of described the first runner both sides.
As preferably, in the second runner bottom, be provided with stepped hole, step straight pin is rotatably assorted in stepped hole, between straight pin bottom surface and stepped hole bottom, elastic component is installed, the second runner top is provided with the groove mating with straight pin, straight pin top and this groove closely cooperate, and straight pin is arranged in the position of the second runner and offers the through hole mating with the second runner.
Compared with prior art, the utility model has the advantage of:
1. guaranteed completely stub bar to be held after mold injection, stayed in male model, and this draw material structure can do slag well use again, while avoiding firm injection moulding, the plastic cement of head enters mould product inside, thereby improves product quality.This runner also can avoid runner when ejecting, to produce rubber powder, processes simple and conveniently, is convenient to machined electrode standardization.
2. process buffer structure converging, the temperature of injection moulding fluid on the section of diameter of the second runner can roughly be evenly distributed, so can eliminate injection moulding fluid in runner with cross section on temperature to higher more phenomenon on one side, this injection moulding fluid can symmetrical VELOCITY DISTRIBUTION be entered in die cavity and form product, guarantee that the finished product in each die cavity has more consistent quality.
By valve can control sprue one or both sides the first runner unlatching or close, thereby meet the production requirement of special circumstances.
4. by regulating spool, can accurately control the flow of the second runner, improve the Forming Quality of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment mono-;
Fig. 2 is the sectional perspective enlarged drawing at A place in Fig. 1;
Fig. 3 is the structural representation of embodiment bis-;
Fig. 4 is the structural representation of embodiment tri-;
Fig. 5 be in embodiment tri-straight pin installation site along the part sectioned view of runner bearing of trend.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Embodiment mono-
Shown in Fig. 1 and Fig. 2, a kind of flow passage structure of injection mold, comprise sprue 1, the first runner 2 and the second runner 3, sprue 1 bottom is communicated with the first runner 2 middle parts, the first runner 2 two ends are communicated with second runner 3 middle parts respectively, article two, the second runner 3 is parallel to each other, described sprue 1 is communicated with position and is provided with and draws material structure with the first runner 2, this draws material structure to consist of some tablets 4 that vertically draw of arranging along sprue 1 outer wall even circumferential, the described tablet 4 that draws has 6, and the angle between adjacent 2 is 60 °.
The first runner 2 is provided with buffer structure 5 with the position that is communicated with of the second runner 3, the outline of this buffer structure 5 is heart-shaped, the heart tip of the longitudinal side of buffer structure 5 is connected with the first runner 2, and the horizontal relative both sides of buffer structure 5 are connected with the second runner 3 respectively.
Described buffer structure 5 comprises relative arcwall 51 and two relative vertical wall 52, two arcwalls 51 and the first runner 2 smooth connections, and two vertical walls 52 are connected with the second runner 3.
Described vertical wall 52 is heart-shaped, and two arcwalls 51 extend along the vertical edge expansion of walls 52, and the curved contraction and then meet at central authorities to centre, thereby forms two convex surfaces 53 at the heart-shaped most advanced and sophisticated other end, thereby in mould, forms two concave surfaces.This two convex surface 53 (and concave surface of mould) is compared with more close this second runner 3 of the other parts of arcwall 51.The surface of the first runner 2 is connected with the surface smoothing of arcwall 51, thereby guarantees that near the most of fluid of inwall of the mould of the first runner 2 correspondences can be guided to the inwall annex of the mould of these arcwall 51 correspondences smoothly.
During work, sprue 1 is communicated with the raw material injection apparatus of injection moulding machine, and injection moulding fluid enters the first runner 2, the second runner 3 by sprue 1, finally enters and in die cavity, forms finished product.When the injection moulding fluid in the first runner 2 enters buffer structure, under the guiding of arcwall 51, higher temperature fluid near the first runner 2 wall edges will flow along arcwall 51, and the directed wall that flows to convex surface 53 correspondences, then flow to the second runner 3.Can make thus the temperature of injection moulding fluid on the section of diameter of the second runner 3 roughly be evenly distributed, eliminate in prior art fluid in runner the temperature on cross section to higher more phenomenon on one side.And when next injection moulding fluid enters next runner shunting, the fluid temperature (F.T.) that enters both sides runner also can keep being uniformly distributed as far as possible, and then the die cavity that this injection moulding fluid can enter with symmetrical VELOCITY DISTRIBUTION these runner both sides forms product, guarantee that the product in each die cavity has more consistent quality.
This buffer structure 5 also can reduce fluid and along stroke pressure, lose in whole runner, is conducive to product when moulding, and pressure is sufficient.
In formed product, complete after die sinking, draw material structure can be completely stub bar to be held, it is stayed in male model, and this draws material structure can do slag well use again, while avoiding firm injection moulding, the plastic cement of head enters mould product inside, thereby improves product quality.This runner also can avoid runner when ejecting, to produce rubber powder.
Embodiment bis-
Referring to Fig. 3, the difference of the present embodiment and embodiment mono-is: on the first runner 2 of described sprue 1 both sides, be all provided with and control the electromagnetic switch valve 6 that the first runner 2 is opened or closed.
Embodiment tri-
Referring to Fig. 4 and Fig. 5, the difference of the present embodiment and embodiment bis-is, the regulating spool that regulates this runner sectional area is all installed on the second runner 3 of described the first runner 2 both sides.
Or in the second runner 3 bottoms, stepped hole 7 is set, and the aperture of this stepped hole 7 is greater than the diameter of the second runner 3, step straight pin 8 is rotatably assorted in stepped hole 7, between straight pin 8 bottom surfaces and stepped hole 7 bottoms, elastic component 9 is installed, the second runner 3 tops are provided with the groove mating with straight pin 8, straight pin 8 tops and this groove closely cooperate, and straight pin 8 is arranged in the position of the second runner 3 and offers the through hole 10 mating with the second runner 3.At straight pin 8 end faces, be provided with inner hexagonal hole, by this inner hexagonal hole, can facilitate slewing circle pin 8, make through hole 10 from the second runner 3 in different relative positions, thereby regulate the circulation area of runner.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (8)

1. a flow passage structure of injection mold, comprise sprue, the first runner and the second runner, sprue bottom is communicated with the first runner middle part, the first runner two ends are communicated with a second runner middle part respectively, it is characterized in that: described sprue is communicated with position and is provided with and draws material structure with the first runner, this draws material structure to consist of some tablets that vertically draw of arranging along sprue outer wall even circumferential, the first runner is provided with buffer structure with the position that is communicated with of the second runner, the outline of this buffer structure is heart-shaped, the heart tip of the longitudinal side of buffer structure is connected with the first runner, the horizontal relative both sides of buffer structure are connected with the second runner respectively.
2. flow passage structure of injection mold according to claim 1, is characterized in that: described in draw tablet to have 6, the angle between adjacent 2 is 60 °.
3. flow passage structure of injection mold according to claim 1, is characterized in that: described buffer structure comprises relative arcwall and two relative vertical walls, and two arcwalls and the first runner are in smoothing junction, and two vertical walls are connected with the second runner.
4. flow passage structure of injection mold according to claim 3, is characterized in that: described vertical wall is for heart-shaped, and two arcwalls extend along the vertical edge expansion of walls, and the curved contraction and then meet at central authorities to centre, thereby in mould, forms two concave surfaces.
5. flow passage structure of injection mold according to claim 1, is characterized in that: on the first runner of described sprue both sides, be all provided with and control the valve that the first runner is opened or closed.
6. flow passage structure of injection mold according to claim 5, is characterized in that: described valve is electromagnetic switch valve.
7. flow passage structure of injection mold according to claim 6, is characterized in that: the regulating spool that regulates this runner sectional area is all installed on the second runner of described the first runner both sides.
8. flow passage structure of injection mold according to claim 6, it is characterized in that: in the second runner bottom, be provided with stepped hole, step straight pin is rotatably assorted in stepped hole, between straight pin bottom surface and stepped hole bottom, elastic component is installed, the second runner top is provided with the groove mating with straight pin, straight pin top and this groove closely cooperate, and straight pin is arranged in the position of the second runner and offers the through hole mating with the second runner.
CN201420225971.1U 2014-04-23 2014-04-23 Injection mold flowing channel structure Expired - Fee Related CN203792642U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420225971.1U CN203792642U (en) 2014-04-23 2014-04-23 Injection mold flowing channel structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420225971.1U CN203792642U (en) 2014-04-23 2014-04-23 Injection mold flowing channel structure

Publications (1)

Publication Number Publication Date
CN203792642U true CN203792642U (en) 2014-08-27

Family

ID=51374906

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420225971.1U Expired - Fee Related CN203792642U (en) 2014-04-23 2014-04-23 Injection mold flowing channel structure

Country Status (1)

Country Link
CN (1) CN203792642U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150462A (en) * 2015-07-10 2015-12-16 广州百力明光电子科技有限公司东莞分公司 Runner system for production of ultrathin light guide plate
CN107907300A (en) * 2017-11-08 2018-04-13 北京理工大学 A kind of water tunnel experiment shrinkage expansion runner self-checking device
TWI696540B (en) * 2018-05-21 2020-06-21 胡連精密股份有限公司 Flow direction adjusting device for injecting mold feed

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150462A (en) * 2015-07-10 2015-12-16 广州百力明光电子科技有限公司东莞分公司 Runner system for production of ultrathin light guide plate
CN107907300A (en) * 2017-11-08 2018-04-13 北京理工大学 A kind of water tunnel experiment shrinkage expansion runner self-checking device
TWI696540B (en) * 2018-05-21 2020-06-21 胡連精密股份有限公司 Flow direction adjusting device for injecting mold feed

Similar Documents

Publication Publication Date Title
CN203792642U (en) Injection mold flowing channel structure
CN101774258A (en) Mold and injection molding channel structure thereof
CN106142461A (en) Twice-die-opening die casting
CN204585686U (en) The runner hard polyaminoester pouring foaming moulds such as multistation
CN204295961U (en) A kind of spot pouring mouth turns sidegated injection mold
CN206264264U (en) A kind of injection mold of single die joint
CN108556279A (en) A kind of multi-cavity line position hot runner plastic injection mould
CN109093939A (en) Register face injection forming mold and the Shooting Technique for manufacturing register face
CN104608335A (en) Injection mold of double-color bottle and manufacturing technology of double-color bottle
CN205238455U (en) Injection mold
CN103395173B (en) A kind of PP large transfusion bottle preform mould entering glue based on three-clove style
CN204869480U (en) Stromatolite mould
CN205255418U (en) Novel injection mold
CN204658836U (en) A kind of bicolor injection mould
CN208290364U (en) A kind of injection mold convenient for turnover box demoulding
CN207388232U (en) A kind of precision complicated plastic injection mold
CN207607061U (en) A kind of type concealed glue inlet structure
CN203557639U (en) Concealed glue injection type mold
CN206306384U (en) A kind of two-plate plastic mould of high-efficiency high-precision
CN203409970U (en) Bottle blank mould of PP (polypropylene) large infusion bottle based on three-way glue feeding
CN202528390U (en) Programmable logic controller (PLC)-control-based double-layer injection mold
CN207077698U (en) A kind of single injection-molded mould of tubular products
CN206765254U (en) A kind of injection mold of Charger (portable round)
CN204487974U (en) Pipe fitting injection molding mold
CN203863942U (en) Injection mould device used for hot runner

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

Granted publication date: 20140827

Termination date: 20170423

CF01 Termination of patent right due to non-payment of annual fee