CN201604269U - Injection mold for annular plastic part - Google Patents
Injection mold for annular plastic part Download PDFInfo
- Publication number
- CN201604269U CN201604269U CN2009203525665U CN200920352566U CN201604269U CN 201604269 U CN201604269 U CN 201604269U CN 2009203525665 U CN2009203525665 U CN 2009203525665U CN 200920352566 U CN200920352566 U CN 200920352566U CN 201604269 U CN201604269 U CN 201604269U
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- China
- Prior art keywords
- cover half
- dynamic model
- mandrel
- push rod
- chamber
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Abstract
The utility model discloses an injection mold for an annular plastic part, which belongs to the technical field of injection molds, and mainly comprises a stationary mold part and a movable mold part, wherein the stationary mold part comprises a stationary mold body, a sprue cup, a core shaft sleeve, and a core shaft; the movable mold part comprises a movable mold body, a push plate, a jacking rod, a support seat, and a movable mold fixing plate; a raised ring matched with a jacking rod cavity of the movable mold body is arranged at the extending part of the core shaft sleeve, and when in mold assembly, the raised ring extends to the jacking rod cavity, and an annular closed mold cavity is formed between the core shaft and the jacking rod cavity; and a movable mold melting material pouring gate on the movable mold body corresponds to a stationary mold melting material pouring gate on the stationary mold body, and a pouring opening of the stationary mold melting material pouring gate is formed on the annular side wall of the mold cavity. The utility model solves the technical problems of the short annular plastic part with thin wall that the injection production is difficult, and the production efficiency is low, and has a reasonable structure. Therefore, the injection mold is widely applied in the production manufacturing industry of plastic parts.
Description
Technical field
The utility model relates to a kind of mould, relates in particular to a kind of injection mold that is applied to injection moulding thin-walled plastic parts moulding.
Background technology
At present, some ring-type mouldings, the mould structure that uses is dynamic model mandrel, dynamic model ejector sleeve, adopt this structure, the difficulty of processing of dynamic model mandrel and dynamic model ejector sleeve is big, and concentricity is difficult to guarantee, dynamic model ejector sleeve wall thickness is because length is long, its cylindricity also is difficult to guarantee, and its wall thickness must be greater than 0.6mm, and wall thickness just can't injection mo(u)lding less than the plastic of 0.6mm.
Adopt the push-plate type mould structure in addition, during the smaller moulding of working height, cast gate can not be made sub marine gate, needs to increase processing technology after the injection moulding, is difficult to form automated production, and production efficiency is very low; And this structure concentricity requirement is than higher, and the part outward appearance after the injection moulding is bad, and qualification rate is low.
The utility model content
Technical problem to be solved in the utility model is: a kind of ring-type plastic injection mold is provided, is difficult to injection moulding production, the technical problem that production efficiency is low to solve the short ring-type plastic of wall thin type.
For solving the problems of the technologies described above, the technical solution of the utility model is: ring-type plastic injection mold, comprise the cover half part, and described cover half partly comprises the cover half body, and described cover half body is provided with cup, and described cup is provided with cover half fused materials running channel; The dynamic model part, described dynamic model partly comprises the dynamic model body; Described cover half body is provided with the mandrel chamber, described mandrel chamber is towards a side opening of die joint, described mandrel is equipped with mandrel in the chamber, be arranged with core sleeve on the described mandrel, the part of described core sleeve is installed on another part in the described mandrel chamber, and to stretch out described cover half from the opening in described mandrel chamber external, is clamped with spring between described core sleeve and the mandrel; Described dynamic model body is provided with the push rod chamber that two ends connect, and described push rod is slidingly fitted with push rod in the chamber, and described push rod stretches out the push rod chamber and is fixed in the push pedal from an end that deviates from die joint, and described push pedal elasticity is installed on the described dynamic model body; The extension of described core sleeve is provided with a bulge loop, and the push rod chamber of described bulge loop and described dynamic model body is suitable, and described bulge loop stretches into described push rod chamber and described mandrel and push rod and leans and form the die cavity of ring seal; Offer dynamic model fused materials running channel on the described dynamic model body, described dynamic model fused materials running channel is corresponding with described cover half fused materials running channel, and the cast gate of described cover half fused materials running channel is opened in the annular sidewall of described die cavity.
As a kind of improvement, described cover half body comprises solid plate and the cover half fixed head that is fixed together.
As further improvement, described dynamic model body comprises moving platen and dynamic mould fixing plate, and described moving platen is fixedlyed connected with dynamic mould fixing plate by supporting seat.
Owing to adopted technique scheme, the beneficial effects of the utility model are: because core sleeve is sheathed on the mandrel, guaranteed the concentricity of core sleeve and mandrel, improved the quality of plastic finished product; Since during matched moulds the external part of core sleeve insert in the push rod chamber and with the push rod formation die cavity that offsets, the shape of die cavity can be changed to varied according to the shape of push rod and the shape of mandrel, the wall thickness of core sleeve's external part is exactly the wall thickness of plastic, because the external part of core sleeve is shorter, its wall thickness can be worked into 0.15mm, has expanded the range of work of injection machine; Because die cavity is hidden in the dynamic model body, the distance between push rod and the core sleeve is the height of plastic, and therefore moulding ring highly can be reduced to 0.3mm; Because core sleeve is connected with mandrel elasticity, core sleeve releases plastic automatically during die sinking, and push rod is particularly useful for the production and processing of the short plastic of wall thin type with the gate cutting of plastic simultaneously, and range of application is wider, and production efficiency is higher; Die cavity can be provided with several, has improved the operating efficiency of injection mold greatly.
Because the solid plate and the cover half fixed head that are fixed together have constituted the cover half body, make that mandrel and core sleeve are easy for installation, the installation accuracy height, closing precision is improved, and has improved the product qualified rate of ring-type plastic.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Structural representation when Fig. 1 is the matched moulds of the utility model embodiment;
Structural representation when Fig. 2 is the die sinking of the utility model embodiment;
Among the figure: 1, cup, 2, mandrel, 3, the compression spring, 4, core sleeve, 5, the cover half fixed head, 6, the cover half body, 7, the dynamic model body, 8, the dynamic model gripper shoe, 9, push rod, 10, preceding push pedal, 11, the mould leg, 12, the back push pedal, 13, dynamic mould fixing plate.
The specific embodiment
As depicted in figs. 1 and 2, a kind of ring-type plastic injection mold comprises the cover half part, described cover half partly comprises cover half body 6, cover half body 6 is fixedly installed on the cover half fixed head 5, and described cover half body 6 is provided with cup 1, and described cup 1 is provided with cover half fused materials running channel; The dynamic model part, described dynamic model partly comprises dynamic model body 7, dynamic model body 7 is fixedly installed on the dynamic mould fixing plate 13 by the supporting seat of being made up of dynamic model gripper shoe 8 and mould leg 11; Described cover half body 6 is provided with the mandrel chamber, described mandrel chamber is towards a side opening of die joint, described mandrel is equipped with mandrel 2 in the chamber, be arranged with core sleeve 4 on the described mandrel 2, the part of described core sleeve 4 is installed on another part in the described mandrel chamber and stretches out outside the described cover half body 6 from the opening in described mandrel chamber, is clamped with compression spring 3 between described core sleeve 4 and the mandrel 2; Described dynamic model body 7 is provided with the push rod chamber that two ends connect, described push rod is slidingly fitted with push rod 9 in the chamber, described push rod 9 stretches out the push rod chamber and is fixed in the push pedal from an end that deviates from die joint, described push pedal elasticity is installed on the described dynamic model body 7, and push pedal comprises preceding push pedal 10 and the back push pedal 12 that is fixedly installed togather; The extension of described core sleeve 4 is provided with a bulge loop, and the push rod chamber of described bulge loop and described dynamic model body 7 is suitable, and described bulge loop stretches into described push rod chamber and described mandrel 2 and leans with push rod 9 and form the die cavity of ring seal; Offer dynamic model fused materials running channel on the described dynamic model body 7, described dynamic model fused materials running channel is corresponding with described cover half fused materials running channel, and the cast gate of described cover half fused materials running channel is opened in the annular sidewall of described die cavity.
Its course of work is as follows:
As shown in Figure 1, during matched moulds, cover half body 6 is fitted with dynamic model body 7, and the bulge loop of mandrel 2 and core sleeve 4 stretches in the push rod chamber of dynamic model body 7, and dynamic model body 7 pushes back the position with core sleeve 4, and compression spring 3 is compressed, and mandrel 2 stretches out and offsets with push rod 9; Push pedal 10 simultaneously, back push pedal 12 are pulled back, pulling push rod 9 returns, push rod 9, core sleeve 4, mandrel 2 form die cavity in the push rod chamber, sub marine gate is aimed at position, die cavity middle and lower part, molten plastic is by the cover half fused materials running channel of cup 1 and the dynamic model fused materials running channel on the dynamic model body 7, inject die cavity by sub marine gate, fill with the back cooling, prepare die sinking.
As shown in Figure 2, during die sinking, cover half body 6 is opened with dynamic model body 7, compression spring 3 promotes core sleeve 4 plastic is released, plastic disengaging mandrel 2, and push pedal 10 and back push pedal 12 promotion push rods 9 move forward before the while, push rod 9 is sheared cast gates, releases plastic, and plastic and material separate and come off from mould automatic.
The utility model is not limited to above-mentioned concrete embodiment; die cavity is designed to different shapes according to the shape difference of plastic; those of ordinary skill in the art is from above-mentioned design; without performing creative labour; all conversion of having done all drop within the protection domain of the present utility model.
Claims (3)
1. ring-type plastic injection mold comprises
The cover half part, described cover half partly comprises the cover half body, and described cover half body is provided with cup, and described cup is provided with cover half fused materials running channel;
The dynamic model part, described dynamic model partly comprises the dynamic model body; It is characterized in that:
Described cover half body is provided with the mandrel chamber, described mandrel chamber is towards a side opening of die joint, described mandrel is equipped with mandrel in the chamber, be arranged with core sleeve on the described mandrel, the part of described core sleeve is installed on another part in the described mandrel chamber, and to stretch out described cover half from the opening in described mandrel chamber external, is clamped with spring between described core sleeve and the mandrel;
Described dynamic model body is provided with the push rod chamber that two ends connect, and described push rod is slidingly fitted with push rod in the chamber, and described push rod stretches out the push rod chamber and is fixed in the push pedal from an end that deviates from die joint, and described push pedal elasticity is installed on the described dynamic model body;
The extension of described core sleeve is provided with a bulge loop, and the push rod chamber of described bulge loop and described dynamic model body is suitable, and described bulge loop stretches into described push rod chamber and described mandrel and push rod and leans and form the die cavity of ring seal;
Offer dynamic model fused materials running channel on the described dynamic model body, described dynamic model fused materials running channel is corresponding with described cover half fused materials running channel, and the cast gate of described cover half fused materials running channel is opened in the annular sidewall of described die cavity.
2. ring-type plastic injection mold as claimed in claim 1 is characterized in that: described cover half body comprises solid plate and the cover half fixed head that is fixed together.
3. ring-type plastic injection mold as claimed in claim 1 is characterized in that: described dynamic model body comprises moving platen and dynamic mould fixing plate, and described moving platen is fixedlyed connected with dynamic mould fixing plate by supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203525665U CN201604269U (en) | 2009-12-31 | 2009-12-31 | Injection mold for annular plastic part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203525665U CN201604269U (en) | 2009-12-31 | 2009-12-31 | Injection mold for annular plastic part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201604269U true CN201604269U (en) | 2010-10-13 |
Family
ID=42948979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203525665U Expired - Lifetime CN201604269U (en) | 2009-12-31 | 2009-12-31 | Injection mold for annular plastic part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201604269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313834A (en) * | 2011-01-05 | 2013-09-18 | 矢崎总业株式会社 | Resin molded lens |
| CN112020414A (en) * | 2017-12-06 | 2020-12-01 | 西帕股份有限公司 | Injection compression molding apparatus |
-
2009
- 2009-12-31 CN CN2009203525665U patent/CN201604269U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313834A (en) * | 2011-01-05 | 2013-09-18 | 矢崎总业株式会社 | Resin molded lens |
| CN112020414A (en) * | 2017-12-06 | 2020-12-01 | 西帕股份有限公司 | Injection compression molding apparatus |
| CN112020414B (en) * | 2017-12-06 | 2023-04-25 | 西帕股份有限公司 | Injection compression molding apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101013 |
|
| CX01 | Expiry of patent term |