CN109760278A - A kind of injection mold for internal screw thread demoulding - Google Patents
A kind of injection mold for internal screw thread demoulding Download PDFInfo
- Publication number
- CN109760278A CN109760278A CN201910119300.4A CN201910119300A CN109760278A CN 109760278 A CN109760278 A CN 109760278A CN 201910119300 A CN201910119300 A CN 201910119300A CN 109760278 A CN109760278 A CN 109760278A
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- rotation
- moving template
- several
- screw thread
- solid plate
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- 238000002347 injection Methods 0.000 title claims abstract description 27
- 239000007924 injection Substances 0.000 title claims abstract description 27
- 239000007787 solid Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 description 8
- 239000004033 plastic Substances 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Abstract
The invention belongs to mould applications, provide a kind of injection mold for internal screw thread demoulding, it include: solid plate, it is offered into cast gate and several type chambers, each type chamber is uniformly surrounded on into cast gate peripheral region, cast gate lower end is provided with several gate channels, each gate channel is angularly disposed and its end is located at corresponding cavity side end, and each gate channel is communicated with corresponding type chamber；Moving template is movably set in solid plate lower end, several double wedges is provided on moving template upper surface；De- material component is formed, the upper end is provided with several rotation columns, and the activity of each rotation column is through moving template and the upper end stretches to that corresponding type is intracavitary, and each rotation column upper end is provided with screw thread corresponding with product；Product is enabled to detach rotation column when the rotation of rotation column.Compared with the prior art, the advantages of the present invention are as follows the material-removing structures that can be reduced in solid plate, reduce the manufacturing cost of solid plate.
Description
Technical field
The invention belongs to mould applications, and in particular to a kind of injection mold for internal screw thread demoulding.
Background technique
Injection mold is the jig for plasthetics rapid shaping.Injection mold is made of dynamic model and cover half two parts,
Dynamic model is mounted on the moving die plate of injection (mo(u)lding) machine, and cover half is mounted on the fixed form of injection (mo(u)lding) machine.It is being injection moulded
When dynamic model and cover half closure constitute running gate system and type chamber, dynamic model and cover half separation are to take out plastic products when die sinking.Mold
Mainly it is made of running gate system, thermoregulating system, forming part and constitutional detail.Wherein running gate system and forming part are and plastics
Direct contact portion, and change with plastics and product, it is most complicated in mold, variation maximum, it is desirable that processing finish and essence
Spend highest part.Running gate system refer to plastics from nozzle enter type chamber before runner section, including sprue, cold slug well, point
Runner and cast gate etc..Forming part refers to the various parts for constituting article shape, including dynamic model, cover half and type chamber, type core, molding
Bar and exhaust outlet etc..
The demoulding of threaded portion is the key that the mold design containing internal and external screw thread in plastic.Generally use following two class
Method demoulding: one kind is demoulded by the way of forced stripper mechanism in the case where plastic and structure allow；Another kind of is not
It is suitable that pressure mode is used to demould, if screw thread is compared with deep, plastic intensity is big, the demanding plastic of accuracy of thread, then must use
Rotating stripping demoulding mode is demoulded, existing rotating stripping demoulding structure, after the completion of product injection molding, the separation of product and sprue channel open compared with
For trouble, it is necessary to add a material-removing structure in solid plate, such way can greatly increase the manufacturing cost of mold
And the difficulty of processing of casting, so needing to design a new conveniently stripped injection mold.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to the status of the prior art, and provide a kind of for internal screw thread demoulding
Injection mold.
The technical scheme of the invention to solve the technical problem is: proposing a kind of injection molding for internal screw thread demoulding
Mold, comprising: solid plate is offered into cast gate and several type chambers, and each type chamber is uniformly surrounded on described into pouring
Mouth peripheral region, described that cast gate lower end is provided with several gate channels, each gate channel is angularly disposed and it
End is located at the corresponding cavity side end, and each gate channel is communicated with corresponding type chamber；
Moving template is movably set in the solid plate lower end, is provided with several double wedges on the moving template upper surface；
De- material component is formed, the upper end is provided with several rotation columns, and the activity of each rotation column runs through institute
It states moving template and the upper end stretches to that the corresponding type is intracavitary, and each rotation column upper end is provided with corresponding with product
Screw thread；
Product is enabled to detach rotation column when rotation column rotation.
In a kind of above-mentioned injection mold for internal screw thread demoulding, the molding de- material component includes:
Movable plate, is movably connected on the moving template lower end, and each equal activity of rotation column is inserted in the shifting
On movable plate；
Main shaft is rotated, activity is inserted on the movable plate, and each rotation column lower end is led with the rotation
The engagement connection of axis upper end；
Rotary electric machine, is set to the movable plate side and its lower end is connect with the rotation main shaft.
In a kind of above-mentioned injection mold for internal screw thread demoulding, the solid plate lower end be provided with several first
Connecting column is arranged with the first de- material spring on each first connecting column, and each first de- material lower spring end supports
It is against the moving template upper end.
In a kind of above-mentioned injection mold for internal screw thread demoulding, several the second companies are inserted on the moving template
Connect column, be arranged with the second de- material spring on each second connecting column, each second de- material lower spring end against
In the movable plate upper end.
In a kind of above-mentioned injection mold for internal screw thread demoulding, the solid plate lower end is provided with guide sleeve, described
Guide post is provided on movable plate, the guide post upper end is through the moving template and activity is inserted in the guide sleeve.
It can be certainly when being opened compared with the prior art, the advantages of the present invention are as follows the injection mold for internal screw thread demoulding
It is dynamic that product is driven to separate with sprue channel open, the material-removing structure in solid plate is reduced, the manufacturing cost of solid plate is reduced, reduces product
Production stage and production difficulty.
Detailed description of the invention
Fig. 1 is this principal direction perspective view for the injection mold of internal screw thread demoulding；
Fig. 2 is this side shape perspective view for the injection mold of internal screw thread demoulding；
Fig. 3 is solid plate three-dimensional view.
Fig. 4 is the annexation figure of moving template and molding de- material component.
In figure, solid plate 1, into cast gate 2, type chamber 3, gate channel 4, moving template 5, double wedge 6, rotation column 7, movable plate 8,
Rotate main shaft 9, rotary electric machine 10, the first connecting column 11, the first de- material spring 12, the second connecting column 13, the second de- material spring 14,
Guide sleeve 15, guide post 16, product 17.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figures 1 to 4, this injection mold demoulded for internal screw thread, comprising: solid plate 1 is offered into cast gate
2 and several type chambers 3, each type chamber 3 be uniformly surrounded on into 2 peripheral region of cast gate, 2 lower end of cast gate is provided with several cast gates
Channel 4, each gate channel 4 is angularly disposed and its end is located at corresponding 3 side of type chamber, each gate channel 4 with
Corresponding type chamber 3 communicates；Moving template 5, is movably set in 1 lower end of solid plate, and it is convex to be provided with several on 5 upper surface of moving template
Tooth 6；Form de- material component, the upper end is provided with several rotation columns 7, the activity of each rotation column 7 through moving template 5 and
The upper end stretches in corresponding type chamber 3, and each 7 upper end of rotation column is provided with screw thread corresponding with product 17；When turn
Ejector half column 7 enables to product 17 to detach rotation column 7 when rotating.
When injection molding, rotation column 7 is located in type chamber 3, and injection raw material enters from into cast gate 2, then flows slowly into cast gate
In channel 4,4 end of gate channel sets up to be oblique, and 4 end of gate channel is located at 3 side of type chamber and in 3 phase of type chamber
It is logical, and then injection raw material can enter in type chamber 3 from 3 side of type chamber, can reduce the speed that injection raw material is fallen into type chamber 3 in this way
Degree avoids 17 producing bubbles inside of product, improves 17 mass of product, can start to be opened after injection molding is completed and product 17 forms
Movement, i.e., moving template 5 is separated with solid plate 1, since 7 upper end of rotation column is provided with screw thread corresponding with product 17, so
Product 17 after forming is connect with 7 threaded upper ends of rotation column, and moving template 5 is able to drive molding de- material group during declining
Part moves down, and product 17 can be driven to move down, because sprue is connected together with the side end face of product 17, when
When product 17 moves down, solid plate 1 is remained stationary, i.e. the position of sprue is motionless, and product 17 is subject to downward force, can
So that product 17 and sprue disconnect, this mode no longer needs to that blanking structure is added in solid plate 1, reduces the system of solid plate 1
This is caused, while can also reduce the production stage and production difficulty of product 17, improves yield.
When moving template 5 moves down and drives 17 move-out type chamber 3 of product, molding de- material component can divide with moving template 5
From, rotation column 7 can be driven to move down, because product 17 is threadedly coupled with rotation column 7,7 energy of rotation column
Enough product 17 is driven to move down, when product 17 is moved downward to certain distance, 17 lower end of product can be resisted against double wedge 6
On, when forming the drive rotation of rotation column 7 of de- material component, double wedge 6 can provide frictional force for product 17, guarantee product 17 not
Rotation column 7 can be rotated, and then rotation column 7 and product 17 is enabled to be detached from, complete demoulding.
Forming de- material component includes: movable plate 8, is movably connected on 5 lower end of moving template, each activity of rotation column 7
It is inserted on movable plate 8；Rotate main shaft 9, activity is inserted on movable plate 8, each 7 lower end of rotation column with rotation main shaft
The engagement connection of 9 upper ends；Rotary electric machine 10, is set to 8 side of movable plate and its lower end is connect with rotation main shaft 9.
Movable plate 8 can be moved up and down relative to moving template 5, and rotation axis main shaft lower end is connect with rotary electric machine 10, rotation
Motor 10 is able to drive rotation main shaft 9 and rotates, because rotation column 7 engages connection, 10 work of rotary electric machine with rotation main shaft 9
As when be able to drive rotation column 7 and rotate, when rotation column 7 is mobile, movable plate 8 is gradually distance from moving template 5, this makes it possible to
It gives 17 1 downward power of product and enables to rotation column 7 afterwards so that 17 lower end of product is stood tightly against on double wedge 6
It is separated with product 17, realizes demoulding purpose.
1 lower end of solid plate is provided with several the first connecting columns 11, and it is de- that first is arranged on each first connecting column 11
Expect spring 12, each first de- material spring, 12 lower end is resisted against 5 upper end of moving template.
When die sinking, solid plate 1 and moving template 5 are no longer locked, and the first de- material spring 12 is able to drive moving template 5 and solid plate
1 is automatically separated, and then can be realized product 17 and separate with gate channel 4, drives dynamic model using the elastic force of the first de- material spring 12
Plate 5 is separated with solid plate 1, reduces the driving structure of moving template 5, reduces die manufacturing cost.
It is inserted with several the second connecting columns 13 on moving template 5, is arranged with the second de- material on each second connecting column 13
Spring 14, each second de- material spring, 14 lower end are resisted against 8 upper end of movable plate.
Second de- material spring 14 is able to drive movable plate 8 and separates with moving template 5, because rotation column 7 is set to movable plate 8
On, the suspicious rotation column 7 that is able to drive when movable plate 8 is separated with moving template 5 moves gradually downward relative to moving template 5, this
Sample allows for 17 lower end of product and is resisted against on double wedge 6.
1 lower end of solid plate is provided with guide sleeve 15, is provided with guide post 16 on movable plate 8,16 upper end of guide post through moving template 5 and
Activity is inserted in guide sleeve 15.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
Generation, defined range that however, it does not deviate from the spirit of the invention.
Claims (5)
1. a kind of injection mold for internal screw thread demoulding characterized by comprising
Solid plate is offered into cast gate and several type chambers, and each type chamber is uniformly surrounded on described into cast gate periphery
Place, described that cast gate lower end is provided with several gate channels, each gate channel is angularly disposed and its end position
In the corresponding cavity side end, each gate channel is communicated with corresponding type chamber；
Moving template is movably set in the solid plate lower end, is provided with several double wedges on the moving template upper surface；
De- material component is formed, the upper end is provided with several rotation columns, and the activity of each rotation column is through described dynamic
Template and the upper end stretch to that the corresponding type is intracavitary, and each rotation column upper end is provided with spiral shell corresponding with product
Line；
Product is enabled to detach rotation column when rotation column rotation.
2. a kind of injection mold for internal screw thread demoulding according to claim 1, which is characterized in that the molding de- material
Component includes:
Movable plate, is movably connected on the moving template lower end, and each equal activity of rotation column is inserted in the movable plate
On；
Main shaft is rotated, activity is inserted on the movable plate, and each rotation column lower end is and on the rotation main shaft
End engagement connection；
Rotary electric machine, is set to the movable plate side and its lower end is connect with the rotation main shaft.
3. a kind of injection mold for internal screw thread demoulding according to claim 2, which is characterized in that under the solid plate
End is provided with several the first connecting columns, is arranged with the first de- material spring on each first connecting column, and each described the
One de- material lower spring end is resisted against the moving template upper end.
4. a kind of injection mold for internal screw thread demoulding according to claim 3, which is characterized in that on the moving template
Several the second connecting columns are inserted with, are arranged with the second de- material spring on each second connecting column, each described second
De- material lower spring end is resisted against the movable plate upper end.
5. a kind of injection mold for internal screw thread demoulding according to claim 4, which is characterized in that under the solid plate
End is provided with guide sleeve, guide post is provided on the movable plate, the guide post upper end is through the moving template and activity is inserted in institute
It states in guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119300.4A CN109760278A (en) | 2019-02-18 | 2019-02-18 | A kind of injection mold for internal screw thread demoulding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910119300.4A CN109760278A (en) | 2019-02-18 | 2019-02-18 | A kind of injection mold for internal screw thread demoulding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109760278A true CN109760278A (en) | 2019-05-17 |
Family
ID=66456826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910119300.4A Pending CN109760278A (en) | 2019-02-18 | 2019-02-18 | A kind of injection mold for internal screw thread demoulding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109760278A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203267102U (en) * | 2013-06-07 | 2013-11-06 | 金陵科技学院 | Injection mold with positioning reliability and adjustable mold opening stroke |
| CN204487979U (en) * | 2015-03-05 | 2015-07-22 | 浙江黄岩红旗塑料模具厂 | For the core-pulling mechanism of the injection mold with internal thread plastic product |
| DE102014019706A1 (en) * | 2014-10-28 | 2016-04-28 | Leopold Kostal Gmbh & Co. Kg | Injection mold and method for stress-free removal of a sprue system on the injection mold |
| CN206579069U (en) * | 2016-11-30 | 2017-10-24 | 硕昌（上海）精密塑料制品有限公司 | A kind of Plastic Parts with Inner Thread injection mold mechanism |
| CN209666179U (en) * | 2019-02-18 | 2019-11-22 | 宁波职业技术学院 | A kind of injection mold for internal screw thread demoulding |
-
2019
- 2019-02-18 CN CN201910119300.4A patent/CN109760278A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203267102U (en) * | 2013-06-07 | 2013-11-06 | 金陵科技学院 | Injection mold with positioning reliability and adjustable mold opening stroke |
| DE102014019706A1 (en) * | 2014-10-28 | 2016-04-28 | Leopold Kostal Gmbh & Co. Kg | Injection mold and method for stress-free removal of a sprue system on the injection mold |
| CN204487979U (en) * | 2015-03-05 | 2015-07-22 | 浙江黄岩红旗塑料模具厂 | For the core-pulling mechanism of the injection mold with internal thread plastic product |
| CN206579069U (en) * | 2016-11-30 | 2017-10-24 | 硕昌（上海）精密塑料制品有限公司 | A kind of Plastic Parts with Inner Thread injection mold mechanism |
| CN209666179U (en) * | 2019-02-18 | 2019-11-22 | 宁波职业技术学院 | A kind of injection mold for internal screw thread demoulding |
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