CN206230792U - A kind of anti-eccentric injection mold - Google Patents
A kind of anti-eccentric injection mold Download PDFInfo
- Publication number
- CN206230792U CN206230792U CN201621090668.0U CN201621090668U CN206230792U CN 206230792 U CN206230792 U CN 206230792U CN 201621090668 U CN201621090668 U CN 201621090668U CN 206230792 U CN206230792 U CN 206230792U
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- CN
- China
- Prior art keywords
- mandrel
- mold insert
- sprue bush
- eccentric
- sprue
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- 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.)
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of anti-eccentric injection mold, anti-eccentric injection mold includes being arranged on mould bases（1）On sprue bush（2）With the mandrel being arranged in sprue bush（3）；One end of sprue bush is connected with injection molding sprue；Characterized in that, being set with slip mold insert on mandrel（5）；The lateral wall for sliding mold insert is adapted to the madial wall of sprue bush.During injecting glue, the glue for entering sprue bush from cast gate is promoted and slides mold insert advance, is slided mold insert and is played the spacing effect of mandrel, eccentric so as to prevent the finished product after injecting glue from occurring.The anti-eccentric injection mold uses the slip mold insert being arranged on mandrel that the spacing of axial direction is provided for mandrel, the bias of injecting glue product can be significantly prevented, so as to reduce the defect rate of product.
Description
Technical field
The utility model is related to a kind of anti-eccentric injection mold, more particularly to injection molded thin and long shafts product（Include
Plug）Injection moulding process and device.
Background technology
The equipment such as printer are widely applied to thin and long shafts product（It is called rubber roll or roller）, roller generally by plastic cement or
Rubber makes；The substantial benefit of plastic cement roller：One, save material, reduces cost；Two, improve production efficiency, low-carbon (LC) ring
Protect.
Injection machine is existing mature equipment, thin and long shafts product（It is called rubber roll or roller）In injection molding process, deposit
In following defect：Because slender axles are usually more than 30 centimetres, there is stainless steel core bar the inside, this elongated in the plastic glue of mandrel outer
It is extremely difficult that part wants steady and continuous volume production to be molded；Because mandrel is very elongated, centre is full plastic cement, during injecting glue, due to glue
It is often uneven in the extruding of all directions so that eccentric phenomena easily occur in final products, so as to cause thin and long shafts
Product is beated the mortality defect such as bad in use.As shown in figure 4, product both ends（That is 1-1 and 5-5 sections, due to
Plug is kept a grip on by internal model, the not inclined meat of product）But between in the product, because plug is in relative free state, the inclined meat of product is tight
, finally because of inclined meat, there is serious internal stress and cause bad, the fraction defective 60% of bounce in weight.Injected with changing mouth of a river position or changing
Condition etc. has made tens kinds of experiments, cannot improve inclined meat phenomenon.Experimental data and result are not being enumerated herein, and core reasons exist
Elongated in product, sizing material flowing causes plug eccentric in sizing material.
This bad products hinder to such product widely use and plastic cement roller deep popularization, further to subtract
The use of few rubber roller is adversely affected with reducing to environment etc..
Therefore, there is very big bottleneck in the injection molded technology of plastic cement roller.How breakthrough bottleneck makes the product in mould
In processing and on injection molded extremely easily, and with production, at the same easily popularization and application be significant.Therefore,
It is necessary a kind of anti-eccentric injection mold of design.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of anti-eccentric injection mold, the anti-eccentric injection
Mould uses the slip mold insert being arranged on mandrel that the spacing of axial direction is provided for mandrel, can significantly prevent the bias of injecting glue product,
So as to reduce the defect rate of product.
The technical solution of utility model is as follows：
A kind of anti-eccentric injection mold, including the sprue bush being arranged on mould bases and the mandrel being arranged in sprue bush；Pour
One end of muzzle is connected with injection molding sprue；Slip mold insert is set with mandrel；The lateral wall for sliding mold insert is interior with sprue bush
Side wall adaptation.
The first end of mandrel is provided with limiting component, and limiting component is located between injection molding sprue and slip mold insert.
Limiting component is a section of the mandrel that stage portion or annular knurl are processed.
Sprue bush is pipe, and it is the columnar component with axis hole to slide mold insert.
The internal model of mould bases is provided with and slide mold insert and keeps away a chamber for accommodating, and keeps away chamber positioned at mandrel away from injection molding sprue
One end.
Mould bases and mandrel are vertically arranged, and described first end is lower end.
A kind of anti-eccentric injection moulding process, sets on mandrel and slides mold insert, and the lateral wall for sliding mold insert is interior with sprue bush
Side wall adaptation；During injecting glue, the glue for entering sprue bush from cast gate is promoted and slides mold insert advance, is slided mold insert and is played mandrel limit
The effect of position, it is eccentric so as to prevent the finished product after injecting glue from occurring.
The first end of mandrel is provided with limiting component, and limiting component is located between injection molding sprue and slip mold insert；Limiting component
It is one section of the mandrel that stage portion or annular knurl are processed.
Sprue bush is pipe, and it is the columnar component with axis hole to slide mold insert, the internal model of mould bases be provided with for
Accommodate slip mold insert keeps away a chamber, keeps away a chamber positioned at one end away from injection molding sprue of mandrel.
Mould bases and mandrel are vertically arranged, and limiting component is located at the lower end of mandrel.So effect of the limiting component in gravity
Under, its original state is located at the lower end of mandrel.
In addition to mold insert is slided, other modules use general mould structure to the system, and mould bases is standard component, can be in city
Buy in face；Sprue bush is also standard component, can make by oneself or buy；Easy to use, also because being standard component, cost is also involutory
It is suitable.
Described mold insert can use common iron, described mold insert to break through traditional mold insert, and the mold insert is in a mold
Floating motion state.Described mold insert plays shaping in motion, and plays pipe position positioning action in the above.Due to mold insert
There can be positioning relation in plastic cement runner, mechanically effectively prevent the inclined meat of product or deformation.
Beneficial effect：
Anti- eccentric injection mold of the present utility model, uses slip mold insert spacing for mandrel is provided, it is to avoid because glue
The finished product that flowing is caused is eccentric, is skillfully constructed, it is easy to implement, in addition, forming limiting section, process is simple, nothing using annular knurl technique
Other materials need to be increased, can provide spacing in one end of the length direction of mandrel to slide mold insert, experiment shows, this anti-bias
Injection mold can effectively prevent the bias of finished product, solve the long-term unsolved technical problem of the art, significantly carry
The acceptance rate of product high.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of anti-eccentric injection mold of the present utility model；
Fig. 2 is to slide mold insert and mandrel cooperation schematic diagram；
Fig. 3 is the stereogram for sliding mold insert and mandrel；
Fig. 4 is the sectional schematic diagram that the product to be formed is molded using existing injection mold；
Fig. 5 is the sectional schematic diagram that the product to be formed is molded using injection mold of the present utility model.
Label declaration：1- mould bases, 2- sprue bush, 3- mandrels, 4- limiting components, 5- slides mold insert, 6- injection molding sprues.
Specific embodiment
The utility model is described in further details below with reference to the drawings and specific embodiments：
Embodiment 1：Such as Fig. 1-3, shown, a kind of anti-eccentric injection mold, including is arranged on the He of sprue bush 2 on mould bases 1
It is arranged on the mandrel 3 in sprue bush；One end of sprue bush is connected with injection molding sprue；Slip mold insert 5 is set with mandrel；Slide
The lateral wall of mold insert is adapted to the madial wall of sprue bush.Injection molding sprue is also called the mouth of a river.
The first end of mandrel is provided with limiting component 4, and limiting component is located between injection molding sprue and slip mold insert.
Limiting component is a section of the mandrel that stage portion or annular knurl are processed.
Sprue bush is pipe, and it is the columnar component with axis hole to slide mold insert.
The internal model of mould bases is provided with and slide mold insert and keeps away a chamber for accommodating, and keeps away chamber positioned at mandrel away from injection molding sprue
One end.
Mould bases and mandrel are vertically arranged, and described first end is lower end.
A kind of anti-eccentric injection moulding process, sets on mandrel and slides mold insert, and the lateral wall for sliding mold insert is interior with sprue bush
Side wall adaptation；During injecting glue, the glue for entering sprue bush from cast gate is promoted and slides mold insert advance, is slided mold insert and is played mandrel limit
The effect of position, it is eccentric so as to prevent the finished product after injecting glue from occurring.
The first end of mandrel is provided with limiting component, and limiting component is located between injection molding sprue and slip mold insert；Limiting component
It is one section of the mandrel that stage portion or annular knurl are processed.
Sprue bush is pipe, and it is the columnar component with axis hole to slide mold insert, the internal model of mould bases be provided with for
Accommodate slip mold insert keeps away a chamber, keeps away a chamber positioned at one end away from injection molding sprue of mandrel.
When the utility model is applied to vertical injection molding machine, mould bases and mandrel are vertically arranged, and limiting component is located at mandrel
Lower end.So under gravity, its original state is located at the lower end of mandrel to limiting component.
When using, by the upper and lower mould of original shaped article, take out segment space and be rounded slip mold insert.By plug not
The treatment of technique annular knurl is done on the basis of change function, notices that annular knurl is between injecting glue point and mold insert.Movable insert is rolled in plug
Stop at flower, the molding mode is capable of achieving on vertical machine or horizontal machine.Then movable insert is put into internal model together with plug
Shaping.
Be can be seen that from the section of Fig. 5：
Product both ends（That is 1-1 and 5-5 sections, product is not eccentric；Product is not also eccentric between in the product）
Core reasons are elongated product, and sizing material limits plug when flowing by movable insert（Mandrel）, movable insert
Outside is limited by the formed product face of original mould, so effectively having prevented plug in the relatively free of middle part；From
And product is no longer eccentric, the section product and plug in each stage with distribution.
The slot milling in mould bases internal model, this space gives over to the function of movable insert, that is, do movable insert and move to finally
Rest on core insert reserved spatially.
Design above makes the eccentric fraction defective of original product 60% be changed into 0% bias, greatly improves yields.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, this practicality
New to focus on improving a kind of thinking for breaking through routine, i.e., the inlaid piece of mould for directly participating in shaped article is the motion of activity
, shaping is participated in motion, while the part plays a part of positioning, mechanical positioning effectively ensure that the bias of product
Problem.All any modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in
Within protection domain of the present utility model.
Claims (6)
1. a kind of anti-eccentric injection mold, including it is arranged on sprue bush (2) and the mandrel being arranged in sprue bush on mould bases (1)
(3)；One end of sprue bush is connected with injection molding sprue；Characterized in that, being set with slip mold insert (5) on mandrel；Slide mold insert
Lateral wall be adapted to the madial wall of sprue bush.
2. anti-eccentric injection mold according to claim 1, it is characterised in that the first end of mandrel is provided with limiting component,
Limiting component is located between injection molding sprue and slip mold insert.
3. anti-eccentric injection mold according to claim 2, it is characterised in that limiting component is that stage portion or annular knurl are processed
One section of mandrel.
4. anti-eccentric injection mold according to claim 1, it is characterised in that sprue bush is pipe, slides edge
Part is the columnar component with axis hole.
5. anti-eccentric injection mold according to claim 1, it is characterised in that the internal model of mould bases is provided with and slide for accommodating
Mold insert keeps away a chamber, keeps away a chamber positioned at one end away from injection molding sprue of mandrel.
6. the anti-eccentric injection mold according to Claims 2 or 3, it is characterised in that mould bases and mandrel are vertically arranged, institute
The first end stated is lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621090668.0U CN206230792U (en) | 2016-09-28 | 2016-09-28 | A kind of anti-eccentric injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621090668.0U CN206230792U (en) | 2016-09-28 | 2016-09-28 | A kind of anti-eccentric injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206230792U true CN206230792U (en) | 2017-06-09 |
Family
ID=58982074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621090668.0U Expired - Fee Related CN206230792U (en) | 2016-09-28 | 2016-09-28 | A kind of anti-eccentric injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206230792U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426772A (en) * | 2016-09-28 | 2017-02-22 | 平田精密器材(深圳)有限公司 | Anti-eccentric injection molding method and device |
| CN109049438A (en) * | 2018-06-26 | 2018-12-21 | 南京理工大学 | A kind of mold and preparation method thereof preparing hollow tube |
-
2016
- 2016-09-28 CN CN201621090668.0U patent/CN206230792U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426772A (en) * | 2016-09-28 | 2017-02-22 | 平田精密器材(深圳)有限公司 | Anti-eccentric injection molding method and device |
| CN109049438A (en) * | 2018-06-26 | 2018-12-21 | 南京理工大学 | A kind of mold and preparation method thereof preparing hollow tube |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20210928 |