CN203650779U - Double-ejection structure - Google Patents
Double-ejection structure Download PDFInfo
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- CN203650779U CN203650779U CN201320822563.XU CN201320822563U CN203650779U CN 203650779 U CN203650779 U CN 203650779U CN 201320822563 U CN201320822563 U CN 201320822563U CN 203650779 U CN203650779 U CN 203650779U
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- Prior art keywords
- plate
- thimble
- ejection
- spring
- hanging platform
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Abstract
The utility model discloses a double-ejection structure. The structure is arranged on a plastic die, wherein the die is sequentially provided with a male die insert, a male template, a pad and a lower fixed plate. The structure comprises an upper roof, a lower roof, an accommodating groove, an ejector rod, a first ejector pin, a second ejector pin, a third ejector pin and a spring, wherein the accommodating groove is formed between the upper roof and the lower roof; the first ejector pin is provided with a first ejection part, a body and a first hanging table, and outer diameters of the first ejection part, the body and the first hanging table are sequentially increased; one end of the second ejector pin is fixed between the upper roof and the lower roof, and the other end of the second ejector pin extends to the male die insert; the third ejector pin is movably arranged in the accommodating groove, and is provided with a second hanging table and a second ejection part; and the spring is arranged in the accommodating groove and arranged on the second ejection part in a sleeved mode, is limited by the second hanging table, and is in a partially prestressed state when the die is closed. The double-ejection structure has the advantages of small die size, small former tonnage and simple and practical structure, and does not have the problem that elements are broken due to assembly and disassembly.
Description
[technical field]
The utility model relates to a kind of ejecting structure, particularly relates to a kind of secondary ejection structure.
[background technology]
Adopting plastic mould product to be carried out in the process of moulding, sometimes the glue position of product is higher or product is more in the structure of male model side, and package power is large, once ejects part-structure in addition and stays on ejecting structure, therefore can use secondary ejection structure.Certainly, secondary ejection structure can also be used for the situation of male model forced stripper mechanism.
Refer to Fig. 1, Fig. 1 illustrates as a kind of secondary ejection structure schematic diagram.This secondary ejection structure is located at a plastic mould, and described mould has upper mounted plate 10, caster 20, male model plate 30, backing plate 40, the bottom plate 51 sequentially set up.Described secondary ejection structure comprises: be sequentially built in the first upper plate 50, the first lower roof plate 60, the second upper plate 70, the second lower roof plate 80 between described male model plate 30 and described bottom plate 40; The first thimble 90 between described the first upper plate 50 and described the first lower roof plate 60 is fixed in one end; The second thimble 91 between described the second upper plate 70 and described the second lower roof plate 80 is fixed in one end; Be located at the shutter 92 in each described top board outside; One end is inserted in described the first upper plate 50, the first lower roof plate 60 or one end and is inserted in the limited post 93 of described the second upper plate 70, the second lower roof plate 80, and the other end of described limited post 93 all extends to described male model plate 30, caster 20 junctions; Push rod 94, is held in described the first lower roof plate 60 belows while ejecting.
Visible, said structure has following shortcoming: because have four top boards, limited post 93(and be for example four), shutter 92(is for example two), complex structure, die cost is high; Because shutter 92 is arranged on symmetric position outside mould, mould easily damages by pressure in the time of counterdie and shut die; The number of top board is more, increases mold height, and then increases forming machine tonnage.
In view of this, be necessary to develop a kind of secondary ejection structure in fact, to address the above problem.
[summary of the invention]
Therefore, the purpose of this utility model is to provide a kind of secondary ejection structure, solves that prior art secondary ejection structure die size is large, complex structure cost is high, and the subelement problem of easily damaging by pressure.
In order to achieve the above object, the secondary ejection structure that the utility model provides, is located at a plastic mould, and described mould has male die core, male model plate, backing plate, the bottom plate sequentially set up, and this structure comprises:
Upper plate, is located between described male model plate and described bottom plate;
Lower roof plate, is located between described male model plate and described bottom plate, and is positioned at described upper plate below;
Containing groove, is located between described upper plate and described lower roof plate;
Push rod, through described bottom plate and be held in the below of described lower roof plate;
The first thimble, there is the first ejection part, body and the first hanging platform that external diameter sequentially increases, described the first ejection part is movable to be located in described male die core and described male model plate, described body is movable to be located in described male model plate and described upper ejector plate and described body top is limited to described male die core bottom, and described the first hanging platform is movable to be located in described containing groove and top is limited to described upper ejector plate;
The second thimble, its one end is fixed between described upper plate and described lower roof plate, and the other end extends to described male die core;
The 3rd thimble, movable being located in described containing groove, described the 3rd thimble has the second hanging platform and the second ejection part, the external diameter of described the second hanging platform is greater than described the second ejection part external diameter, described the second hanging platform is held in described first hanging platform of described the first thimble, and described the second ejection part is held in described bottom plate in the time of matched moulds;
Spring, is located in described containing groove and is sheathed on described the second ejection part, and described spring is limited to described the second hanging platform, in the time of matched moulds described in spring in part preloading condition.
Optionally, the ejection stroke that continues to eject of limited rear described the second thimble of described the first thimble and described spring precompressed amount sum are less than or equal to described spring maximum compressibility.
Optionally, the ejection stroke that limited rear described the second thimble of described the first thimble continues to eject is 10 millimeters.
Optionally, the precompressed amount of described spring is 3 millimeters.
Optionally, the maximum compressibility of described spring is 14 millimeters.
Compared to prior art, utilize secondary ejection structure of the present utility model, while ejecting for the first time, described push rod promotes described upper plate and lower roof plate, and described the first thimble (precompression of described spring is enough) is synchronizeed and upwards ejected thereupon with described the second thimble, until described body is limited to described male die core bottom, while ejecting for the second time, described the first thimble promotes described the 3rd thimble downwards and compresses described spring, and described the second thimble continues to eject, thereby reaches the effect of Double-ejection.Because four liftout plates are reduced to two by this structure, therefore die size is little, forming machine tonnage is little; Because this structure only need to increase the 3rd thimble and can reach the effect of Double-ejection, reduced limited post, shutter simultaneously, therefore simple and practical; Because this structure does not have the shutter that is arranged at mould outside, therefore do not exist installing/dismounting to damage the problem of element by pressure.
[brief description of the drawings]
Fig. 1 illustrates as a kind of secondary ejection structure schematic diagram.
Fig. 2 illustrates the matched moulds state sectional structure schematic diagram into secondary ejection structure one preferred embodiment of the present utility model.
Fig. 3 illustrates the state that ejects for the first time sectional structure schematic diagram for secondary ejection structure one preferred embodiment of the present utility model.
Fig. 4 illustrates the state that ejects for the second time sectional structure schematic diagram for secondary ejection structure one preferred embodiment of the present utility model.
[detailed description of the invention]
Please jointly consult Fig. 2, Fig. 2 illustrates the matched moulds state sectional structure schematic diagram into secondary ejection structure one preferred embodiment of the present utility model.
In order to achieve the above object, the secondary ejection structure that the utility model provides, is located at a plastic mould, and described mould has male die core 100, male model plate 101, backing plate 102, the bottom plate 103 sequentially set up, and this structure comprises:
Containing groove 106, is located between described upper plate 104 and described lower roof plate 105;
The first thimble 108, there is the first ejection part 109, body 110 and the first hanging platform 111 that external diameter sequentially increases, described the first ejection part 109 is movable to be located in described male die core 100 and described male model plate 101, described body 110 is movable to be located in described male model plate 101 and described upper ejector plate 104 and described body 110 tops are limited to described male die core 100 bottoms, and described the first hanging platform 111 is movable to be located in described containing groove 106 and top is limited to described upper ejector plate 104;
The second thimble 112, its one end is fixed between described upper plate 104 and described lower roof plate 105, and the other end extends to described male die core 100;
The 3rd thimble 113, movable being located in described containing groove 106, described the 3rd thimble 113 has the second hanging platform 114 and the second ejection part 115, the external diameter of described the second hanging platform 114 is greater than described the second ejection part 115 external diameters, described the second hanging platform 114 is held in described first hanging platform 111 of described the first thimble 108, described the second ejection part 115 is held in described bottom plate 103 in the time of matched moulds, the effect of described the 3rd thimble 113 is, in the time of matched moulds, because described the second ejection part 115 is held in described bottom plate 103, thereby can withstand the injection pressure (can keep out if use separately 116, spring) of coming from described the first thimble 108 conduction,
Wherein, the ejection stroke that continues to eject (S) of limited rear described the second thimble 112 of described the first thimble 108 is less than or equal to described spring 116 maximum compressibility (L) with described spring 116 precompressed amount (Y) sums; Also be L≤S+Y.
Wherein, the ejection stroke that limited rear described the second thimble 112 of described the first thimble 108 continues to eject is for example 10 millimeters, and the precompressed amount of described spring 116 is for example 3 millimeters, and the maximum compressibility of described spring 116 is for example 14 millimeters.
Referring again to Fig. 3, Fig. 3 illustrates the state that ejects for the first time sectional structure schematic diagram for secondary ejection structure one preferred embodiment of the present utility model.
While ejecting for the first time, described push rod 107 promotes described upper plate 104 and lower roof plate 105, described the first thimble 108(is because the precompression of described spring 116 is enough) synchronize and upwards eject thereupon with described the second thimble 112, until described body 110 is limited to described male die core 100 bottoms.
Referring again to Fig. 4, Fig. 4 illustrates the state that ejects for the second time sectional structure schematic diagram for secondary ejection structure one preferred embodiment of the present utility model.
While ejecting for the second time, described the first thimble 108 promotes described the 3rd thimble 113 downwards and compresses described spring 116, and described the second thimble 112 continues to eject, thereby reaches the effect of Double-ejection.
Because four liftout plates are reduced to two by this structure, therefore die size is little, forming machine tonnage is little; Because this structure only need to increase the 3rd thimble 113 and can reach the effect of Double-ejection, reduced limited post, shutter simultaneously, therefore simple and practical; Because this structure does not have the shutter that is arranged at mould outside, therefore do not exist installing/dismounting to damage the problem of element by pressure.
Claims (5)
1. a secondary ejection structure, is located at a plastic mould, and described mould has male die core, male model plate, backing plate, the bottom plate sequentially set up, it is characterized in that, this structure comprises:
Upper plate, is located between described male model plate and described bottom plate;
Lower roof plate, is located between described male model plate and described bottom plate, and is positioned at described upper plate below;
Containing groove, is located between described upper plate and described lower roof plate;
Push rod, through described bottom plate and be held in the below of described lower roof plate;
The first thimble, there is the first ejection part, body and the first hanging platform that external diameter sequentially increases, described the first ejection part is movable to be located in described male die core and described male model plate, described body is movable to be located in described male model plate and described upper ejector plate and described body top is limited to described male die core bottom, and described the first hanging platform is movable to be located in described containing groove and top is limited to described upper ejector plate;
The second thimble, its one end is fixed between described upper plate and described lower roof plate, and the other end extends to described male die core;
The 3rd thimble, movable being located in described containing groove, described the 3rd thimble has the second hanging platform and the second ejection part, the external diameter of described the second hanging platform is greater than described the second ejection part external diameter, described the second hanging platform is held in described first hanging platform of described the first thimble, and described the second ejection part is held in described bottom plate in the time of matched moulds;
Spring, is located in described containing groove and is sheathed on described the second ejection part, and described spring is limited to described the second hanging platform, in the time of matched moulds described in spring in part preloading condition.
2. secondary ejection structure as claimed in claim 1, is characterized in that, the ejection stroke that continues to eject of limited rear described the second thimble of described the first thimble and described spring precompressed amount sum are less than or equal to described spring maximum compressibility.
3. secondary ejection structure as claimed in claim 2, is characterized in that, the ejection stroke that limited rear described the second thimble of described the first thimble continues to eject is 10 millimeters.
4. secondary ejection structure as claimed in claim 2, is characterized in that, the precompressed amount of described spring is 3 millimeters.
5. secondary ejection structure as claimed in claim 2, is characterized in that, the maximum compressibility of described spring is 14 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320822563.XU CN203650779U (en) | 2013-12-13 | 2013-12-13 | Double-ejection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320822563.XU CN203650779U (en) | 2013-12-13 | 2013-12-13 | Double-ejection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203650779U true CN203650779U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320822563.XU Expired - Fee Related CN203650779U (en) | 2013-12-13 | 2013-12-13 | Double-ejection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203650779U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708743A (en) * | 2013-12-13 | 2015-06-17 | 汉达精密电子(昆山)有限公司 | Two-stage ejection structure |
| CN110948754A (en) * | 2019-11-11 | 2020-04-03 | 凯莱模具（深圳）有限公司 | Push-down spring-open type secondary ejection system |
-
2013
- 2013-12-13 CN CN201320822563.XU patent/CN203650779U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708743A (en) * | 2013-12-13 | 2015-06-17 | 汉达精密电子(昆山)有限公司 | Two-stage ejection structure |
| CN110948754A (en) * | 2019-11-11 | 2020-04-03 | 凯莱模具（深圳）有限公司 | Push-down spring-open type secondary ejection system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20181213 |