CN207240723U - A kind of injection mold - Google Patents
A kind of injection mold Download PDFInfo
- Publication number
- CN207240723U CN207240723U CN201721327636.2U CN201721327636U CN207240723U CN 207240723 U CN207240723 U CN 207240723U CN 201721327636 U CN201721327636 U CN 201721327636U CN 207240723 U CN207240723 U CN 207240723U
- Authority
- CN
- China
- Prior art keywords
- side gate
- dynamic model
- flow path
- mold cavity
- hot flow
- 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
Links
- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims abstract description 16
- 239000002893 slag Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 abstract description 11
- 238000001746 injection moulding Methods 0.000 description 10
- 239000012778 molding material Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model proposes a kind of injection mold, including dynamic model, cover half, side gate and hot flow path, the cover half is arranged on above the dynamic model and mutually snaps together to form mold cavity with the dynamic model, the side gate is connected with the mold cavity, the hot flow path is connected with the side gate, and the inner diameter values of the side gate are more than or equal to the 1/3 of the mold cavity height height 1/2 for being less than or equal to the mold cavity；Arc-shaped transition angle is provided between the side wall of the adjacent side of side gate and the bottom wall adjacent with the side wall on the dynamic model, steam circulation heating pipe is both provided with the dynamic model and cover half；The end set of the hot flow path has slag well.Solve the problems, such as that injection mold of the prior art causes heavy wall product to lack material when being molded heavy wall product, line, product hair crow are penetrated at product side gate by the utility model.
Description
Technical field
It the utility model is related to a kind of improvement of injection mold structure.
Background technology
Injection mold of the prior art is mainly used for molded plastic part, its agent structure includes mould crust, is formed in
Forming cavity on mould crust, for shaped article, is connected between forming cavity and type of thermal communication by side gate, the mould of the prior art
Tool, is only suitable for the relatively normal 1mm-4mm products of wall thickness.If product wall thickness thickness is more than 6mm, it can be poured because of forming cavity and side
Angle between the side wall and bottom wall of mouth position sides adjacent is right angle, causes to carry out using circulating water heating mode in hot flow path
Formed when pouring into a mould heavy wall product and converge trapped gas, cause product at side gate position formed with water ripples and surface gas line；Together
When can be the less small side gate of bore because of side gate, caused product lacks material short shot, and since hot flow path is linear stream
Road structure, can not collect cold burden completely, and cold burden is assembled at hot flow path mouth, cause cold burden to cause the table in product into product
The problem of face is formed with hair crow.
Utility model content
The utility model provides a kind of injection mold, solves injection mold of the prior art and is led when being molded heavy wall product
Cause heavy wall product to lack material, the problem of line, product hair crow is penetrated at product side gate.
To achieve the purpose that to solve above-mentioned technical problem, the utility model uses following skill using proposed injection mold
Art scheme is achieved：
A kind of injection mold, including dynamic model, cover half, side gate and hot flow path, the cover half are arranged on above the dynamic model
And mutually snap together to form mold cavity with the dynamic model, the side gate is connected with the mold cavity, the hot-fluid
Road is connected with the side gate, and the inner diameter values of the side gate are more than or equal to the 1/3 of the mold cavity height and are less than or equal to institute
State the height 1/2 of mold cavity；Set on the dynamic model between the side wall of the adjacent side of side gate and the bottom wall adjacent with the side wall
Arc-shaped transition angle is equipped with, steam circulation heating pipe is both provided with the dynamic model and cover half；The end of the hot flow path is set
It is equipped with slag well.
The utility model further includes following additional technical feature：
Further, the slag well is set multiple, including the horizontal slag well peace set perpendicular to hot runner direction
Longitudinal slag well that row is set with hot flow path, the transverse direction cold burden and longitudinal cold burden part connect with the hot flow path end
It is logical.
Further, the radius value at the arc-shaped transition angle is R, the Sidewall Height on the dynamic model with side gate sides adjacent
For h, 1/2h<R<h.
Further, the angle value at the arc-shaped transition angle is 90-160 degree.
Further, the steam circulation heating pipe is circumferentially positioned in the dynamic model and cover half close to mold cavity
Side.
Further, it is provided with the blow vent connected with external steam generation device on the steam circulation heating pipe.
There are advantages below and good effect for the utility model：
The utility model proposes a kind of injection mold, includes dynamic model, cover half, side gate and hot flow path, and cover half is arranged on
Mutually snap together to form mold cavity above dynamic model and with dynamic model, side gate is connected with mold cavity, and hot flow path is poured with side
Mouth connection, the diameter value of side gate are more than or equal to the 1/3 of the mold cavity height height for being less than or equal to the mold cavity
1/2, the size of side gate is configured, its internal diameter is more than or equal to the 1/3 of mold cavity height and is less than or equal to mold cavity
The 1/2 of height, increases the internal diameter of side gate, effectively solves the problems, such as that shaped article lacks material caused by side gate is small；
Arc-shaped transition angle is provided between the side wall of the adjacent side of side gate and the bottom wall adjacent with side wall on the dynamic model at the same time, in institute
State and steam circulation heating pipe is provided with dynamic model and cover half, by between the side wall and bottom wall of the dynamic model adjacent with side gate
Arc-shaped transition angle, it can be ensured that when carrying out topping injection, arc-shaped transition angle is passed through by the injection molding material that side gate stream passes through
Charging, will not produce and converge a gas, effectively avoid using right-angle structure exist spray when the problem of being easy to cause trapped gas；
Steam heating is carried out using steam circulation heating pipe at the same time, available for high temperature of the resin into mold cavity during glue is kept, mould
The elevated resin that projects of tool cavity temperature is heated to more than heat distortion temperature, reduces product shrinking deformation degree after cooling；
By the end set slag well in hot flow path, cold burden is collected by slag well, is effectively avoided
Product sends out the problem of black caused by cold burden enters product.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model injection mold；
Fig. 2 is the structure diagram of the steam circulation heating pipe of the utility model injection mold；
Fig. 3 is the structure diagram of the dynamic model of the utility model injection mold.
Embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawings and detailed description, this
Utility model proposes a kind of embodiment of injection mold, and with reference to shown in Fig. 1-Fig. 3, the injection mold in the present embodiment is mainly used for
It is molded heavy wall product, it is preferred that the wall thickness of heavy wall product is 6-20mm, its specific structure includes dynamic model 1, cover half 2, side are poured
Mouth 3 and hot flow path 4, cover half 2 are fixedly connected with injection molding machine, its overall structure is fixed, and cover half 2 is located at the top of dynamic model 1, are moved
Mould 1 then can be relative to 2 open or close of cover half, and dynamic model 1 coordinates to snap together with cover half 2 to be collectively forming for shaped article
Mold cavity, product are molded by the sizing material poured in mold cavity, and side gate 3 is connected with mold cavity, hot flow path 4 and side
Cast gate 3 connects, and when being molded sizing material by injection molding machine, sizing material first passes through hot flow path 4, is then entered by hot flow path 4 and mould
The side gate 3 of cavity connection, side gate 3 are also referred to as feed inlet, are the narrow and small ports between hot flow path 4 and mold cavity, and most
For the thin part of short and small meat.Effect be using the effect for tightening flow surface and making charging reach acceleration, high shear rate can make into
Expect good fluidity;The temperature rise effect of viscous heating also plays the role of lifting material temperature reduction viscosity, the side gate after shaping
Cure sealing at first, prevent charging from flowing back and avoiding the decline of mold cavity pressure is too fast shaped article is produced systolic depression
Function.Then conveniently wiped out with separating flow tract system and formed product part after shaping.Since side gate 3 of the prior art is selected
For the less side gate of bore, the problem of interiors of products lacks material short shot is easily produced when carrying out injection molding product, this
3 structure of side gate is improved in embodiment, the inner diameter values of side gate 3 is more than or equal to the 1/3 of the mold cavity height
Less than or equal to the height 1/2 of the mold cavity, that is, increase the internal diameter size value of side gate 3 make its can not only meet quickly into
Advance material demand and also effectively avoid the problem that bad carrying out cutting because 3 internal diameter of side gate is excessive with product and separating；To keep away
Exempt from when side gate 3 is sprayed that corner collects a gas, this reality between the side wall and bottom wall of 3 sides adjacent of dynamic model 1 and side gate
Apply in example and be improved the structure of dynamic model 1, on the dynamic model 1 with the side wall of 3 adjacent side of side gate and adjacent with side wall
Arc-shaped transition angle 5 is provided between bottom wall, since injection molding material is into fashionable, is entered by side gate 3 in underlying dynamic model 1,
The angle between the side wall and bottom wall of 3 sides adjacent of dynamic model 1 and side gate is right angle in the prior art, in injection molding material into fashionable appearance
Easily deposit the group's gas for producing and collecting here, by arc-shaped transition angle 5 in the present embodiment, can effectively be kept away when side gate 3 sprays
Exempt from sizing material and enter the generation that corner collects the phenomenon of a gas, by arc-shaped transition angle 5, injection molding material can be carried out smoothed
Cross, while steam circulation heating pipe 6 is provided with the mold cavity, available for keeping injection molding material into mold cavity during glue
High temperature, the elevated injection molding material of mold cavity temperature is heated to more than heat distortion temperature, reduce product it is after cooling shrink become
Shape degree, if not using steam heating process, and improves the respective outer side edges that arc-shaped transition angle 5 is combined, only in mould form
Interior logical hot water, mould temperature can not also eliminate product surface there is the defects of ripple and can cause product cooling it is extremely slow, shrink mark is obvious, no
The moire problems of product surface can effectively be improved, while should also be noted that when being molded, injection moulding speed whole process need to keep fast
The speed of slow moderate 3-5mm/s, it is impossible to there is the mutation of speed, and steam-heated heating time need to maintain packing stage, with
Eliminate surface defect.
Further, to solve the problems, such as that product surface occurs pitch-black, there is cold burden in the end set of the hot flow path 4
Well 7, can be collected the cold burden at 4 mouth of type of thermal communication by slag well 7, effectively avoid because cold burden collects endless cause
The problem of hair is black is formed in product surface.
Further, the slag well can be set multiple, including the horizontal slag well set perpendicular to 4 direction of hot flow path
With the parallel longitudinal slag well set with hot flow path 4, the transverse direction cold burden and longitudinal cold burden part with 4 end of hot flow path
Portion connects.
Preferably, the radius value at the arc-shaped transition angle 5 is R, high with the side wall of 3 sides adjacent of side gate on the dynamic model 1
Spend for h, 1/2h<R<h；Further, the angle value at the arc-shaped transition angle 5 is 90-160 degree.
Preferably, the steam circulation heating pipe 6 is circumferentially positioned at the inside of dynamic model 1 and cover half 2 close to mould type
The side of chamber.
Further, the blow vent of external steam generation device connection is provided with the steam circulation heating pipe 6.
Above example is only illustrating the technical solution of the utility model, rather than is limited；Although with reference to before
Embodiment is stated the utility model is described in detail, for those of ordinary skill in the art, still can be right
Technical solution described in previous embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these
Modifications or substitutions, do not make appropriate technical solution essence depart from the utility model technical solution claimed spirit and
Scope.
Claims (6)
1. a kind of injection mold, including dynamic model, cover half, side gate and hot flow path, the cover half be arranged on above the dynamic model and
Mutually snap together to form mold cavity with the dynamic model, the side gate is connected with the mold cavity, the hot flow path
Connected with the side gate, it is characterised in that the inner diameter values of the side gate are more than or equal to the 1/3 small of the mold cavity height
In the height 1/2 equal to the mold cavity；On the dynamic model with the side wall of the adjacent side of side gate and adjacent with the side wall
Arc-shaped transition angle is provided between bottom wall, steam circulation heating pipe is both provided with the dynamic model and cover half；The hot flow path
End set have slag well.
2. injection mold according to claim 1, it is characterised in that the slag well setting is multiple, including perpendicular to heat
The horizontal slag well and the parallel longitudinal slag well set with hot flow path, the transverse direction cold burden and the longitudinal direction that runner direction is set
Cold burden part is connected with the hot flow path end.
3. injection mold according to claim 1, it is characterised in that the radius value at the arc-shaped transition angle is R, described dynamic
With the Sidewall Height of side gate sides adjacent it is h, 1/2h on mould<R<h.
4. injection mold according to claim 3, it is characterised in that the angle value at the arc-shaped transition angle is 90-160
Degree.
5. injection mold according to claim 1, it is characterised in that the steam circulation heating pipe is circumferentially positioned at institute
State in dynamic model and cover half close to mold cavity side.
6. injection mold according to claim 1, it is characterised in that be provided with the steam circulation heating pipe with outside
The blow vent of portion's steam generation device connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721327636.2U CN207240723U (en) | 2017-10-16 | 2017-10-16 | A kind of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721327636.2U CN207240723U (en) | 2017-10-16 | 2017-10-16 | A kind of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207240723U true CN207240723U (en) | 2018-04-17 |
Family
ID=61890206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721327636.2U Expired - Fee Related CN207240723U (en) | 2017-10-16 | 2017-10-16 | A kind of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207240723U (en) |
-
2017
- 2017-10-16 CN CN201721327636.2U patent/CN207240723U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |