CN103831949A - Core pulling device of injection molding mold - Google Patents
Core pulling device of injection molding mold Download PDFInfo
- Publication number
- CN103831949A CN103831949A CN201210488413.XA CN201210488413A CN103831949A CN 103831949 A CN103831949 A CN 103831949A CN 201210488413 A CN201210488413 A CN 201210488413A CN 103831949 A CN103831949 A CN 103831949A
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- CN
- China
- Prior art keywords
- trapezoid block
- pulling device
- chute
- core
- inclined side
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a core pulling device of an injection molding mold. The core pulling device comprises a core pulling part, a trapezoidal block, a support and a telescopic component, wherein the support is fixed on one side of the mold; a first inclined side face and a second inclined side face are formed in the trapezoidal block. The core pulling device provided by the invention is reasonable in structural design, is stable in matching and high in reliability by adopting chute-type connection; due to the inclined structure design of the trapezoidal block, a self-locking function is realized, and the problem that the core pulling part easily retreats is solved. Moreover, the situation that the core pulling part moves radially in the core pulling process of the trapezoidal block can be effectively avoided via a second chute part, a phenomenon that a telescopic rod is damaged or a product is pulled to be damaged is avoided, not only is the product quality effectively guaranteed, but also the service life is greatly prolonged. A T-shaped connecting part is added additionally so as to enable the connection between the telescopic component and the trapezoidal block to be stable, and the operating reliability is further improved. In addition, the core pulling device is simple in overall structure and can be suitable for various molds, the structure of the mold is effectively simplified, the design time and processing time of the mold are shortened, the mold opening cycle is shortened, and the cost of the mold is reduced.
Description
Technical field
The present invention relates to the technical field of loosing core, be specifically related to a kind of injection mold core-pulling device being applied in injection mold.
Background technology
Mould is indispensable important equipment in injection mo(u)lding.Injection mo(u)lding is by the plastic material of hot melt state being injected in the airtight molding space in mould with required form at a high speed, waits after plastic material cooling curing, opens mould curing plastic cement machining object is ejected, to obtain the method for products formed.There is the features such as moulding expense is low, molding cycle is short, forming process is simple and be easy to forming shape complexity plastic cement products due to injection molding forming method, therefore very general in the application of plastic cement products manufacture field.
Along with improving constantly of scientific and technological level, people are also more strict to the requirement of product appearance quality.In the process of Design of Plastic Mould, conventionally product to eject direction consistent with die sinking direction, but many times product has oblique snap fit in cover half direction, the stripping direction of this position and die sinking direction are inconsistent, the normally demoulding, therefore needing to do mould slide block or loose core could the normal demoulding.Although existing core-pulling mechanism can meet the common technical requirement of loosing core, but its complex structure, cause mould structure complexity, volume heaviness, processing cost is high and install loaded down with trivial details, and trapezoid block in existing core-pulling mechanism is all without auto-lock function, poor stability, in the time of injection moulding, the parts of loosing core easily retreat, and in the process of loosing core, be prone to the situation that trapezoid block moves radially, so that damage the piston rod of oil cylinder or pull goods and cause moulding distortion, be difficult to ensure the quality of product.
Summary of the invention
The object of the invention is to, for above-mentioned deficiency, provide a kind of simple and reasonable for structure, long service life, and job stability is high, effectively ensures the injection mold core-pulling device of product quality.
For achieving the above object, technical scheme provided by the present invention is:
A kind of injection mold core-pulling device, it comprises the parts of loosing core, trapezoid block, bearing and telescopic component, described bearing is fixed on mould one side, one side of described trapezoid block is provided with the first inclined side, opposite side is provided with the second inclined side, the front end of the described parts of loosing core stretches in the core chamber of mould, tail end is flexibly connected with the inclined side of trapezoid block by the first chute parts, and the second inclined side of this trapezoid block is flexibly connected with bearing by the second chute parts, the expansion link of described telescopic component is connected with trapezoid block, and can control the expanding-contracting action of this trapezoid block, the parts of loosing core described in respective drive stretch in the core chamber of mould or exit in this core chamber.
Described the first chute parts comprise a T-shaped chute and one and the suitable T-shaped slide rail of inclination of this T-shaped chute, and the T-shaped slide rail of this inclination is arranged on the inclined side of trapezoid block, the tail end of the parts of loosing core described in described T-shaped chute is arranged on.
The angle of inclination of the first inclined side of described trapezoid block
angle of inclination with the T-shaped slide rail that tilts
and be less than or equal to 13 degree.
Described bearing comprises a pressing plate and two stands, and two stands is fixed on the both sides up and down of pressing plate by the vertical symmetry of pin.
Described the second chute parts comprise a T-shaped chute and one and the suitable T-shaped slide rail of level of this T-shaped chute, and the T-shaped slide rail of this level is arranged on the second inclined side of trapezoid block, and described T-shaped chute is arranged on the middle part of described pressing plate.
The angle of inclination of the second inclined side of described trapezoid block
.
Described telescopic component is high-voltage oil cylinder.
The head end of the expansion link of described telescopic component is provided with a T shape connecting portion, and is provided with the be connected recess suitable with the appearance profile of this T shape connecting portion corresponding to described trapezoid block.
Beneficial effect of the present invention is: reasonable in design of the present invention, employing chute-type connects, coordinate stable, reliability is high, by the incline structure design of trapezoid block, realize auto-lock function, the solution problem that parts easily retreat of loosing core, and the situation that can effectively prevent trapezoid block from occurring loosing core in the process of loosing core parts move radially by the second chute parts, avoid damaging expansion link or pull goods, not only effectively ensure product quality, also greatly extend service life, and on expansion link, be equipped with T shape connecting portion, make telescopic component more stable with being connected of trapezoid block, the further reliability of raising work, overall structure is simple in addition, applicable to multiple kinds of molds, and effectively simplify mould structure, reduce design time and the machining period of mould, shorten opening period, reduce die cost.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
Brief description of the drawings
Fig. 1 is perspective view of the present invention;
Fig. 2 is the trapezoid block structural representation in the present invention;
Fig. 3 is use view 1 of the present invention;
Fig. 4 is use view 2 of the present invention.
Detailed description of the invention
Referring to Fig. 1 to Fig. 4, a kind of injection mold core-pulling device that the present embodiment provides, it comprises the parts 1 of loosing core, trapezoid block 2, bearing 3 and telescopic component 4, described bearing 3 is fixed on mould 7 one sides, one side of described trapezoid block 2 is provided with the first inclined side 21, opposite side is provided with the second inclined side 22, described front end of loosing core parts 1 stretches in the core chamber of mould 7, tail end is flexibly connected with the inclined side of trapezoid block 2 by the first chute parts 5, and the second inclined side 22 of this trapezoid block 2 is flexibly connected with bearing 3 by the second chute parts 6, the expansion link 41 of described telescopic component 4 is connected with trapezoid block 2, and can control the expanding-contracting action of this trapezoid block 2, the parts 1 of loosing core described in respective drive stretch in the core chamber of mould 7 or exit in this core chamber.Reasonable in design of the present invention, adopts chute-type to connect, and coordinates and stablizes, and reliability is high,
Described the first chute parts 5 comprise a T-shaped chute and one and the suitable T-shaped slide rail 51 of inclination of this T-shaped chute, and the T-shaped slide rail 51 of this inclination is arranged on the first inclined side 21 of trapezoid block 2, the tail end of the parts 1 of loosing core described in described T-shaped chute is arranged on.
The angle of inclination of the first inclined side 21 of described trapezoid block
angle of inclination with the T-shaped slide rail 51 that tilts
and be less than or equal to 13 degree.
Described bearing 3 comprises a pressing plate 31 and two stands 32, and two stands 32 is fixed on the both sides up and down of pressing plate 31 by the vertical symmetry of pin.
Described the second chute parts 6 comprise a T-shaped chute and one and the suitable T-shaped slide rail 61 of level of this T-shaped chute, and the T-shaped slide rail 61 of this level is arranged on the second inclined side 22 of trapezoid block 2, and described T-shaped chute is arranged on the middle part of described pressing plate 31.
The angle of inclination of the second inclined side 22 of described trapezoid block
.
In the present embodiment, the cross section of chute is T-shaped, coordinates and stablizes, and reliability is high, long service life.In other embodiment, it is dove-tail form or L-type that this chute can be designed to cross section.
Described telescopic component 4 is high-voltage oil cylinder.
The head end of the expansion link 41 of described telescopic component 4 is provided with a T shape connecting portion 42, and is provided with the be connected recess suitable with the appearance profile of this T shape connecting portion 42 corresponding to described trapezoid block.
When injection moulding, by the incline structure design of trapezoid block,
,
+
the incline structure design of≤13 degree, realizes auto-lock function, has solved the problem that the parts of loosing core in injection moulding process easily retreat.Trapezoid block is under the constraint of pressing plate, and the direction of motion is consistent with loose core of oil cylinder direction, has avoided expansion link because damaged by radial load.The two-part angle of inclination of trapezoid block is inconsistent, wherein
,
corresponding wedging face in keeping away hollow body, is reducing the resistance of motion in trapezoid block motion, makes mechanism's operation light, and reliability is high.
While loosing core, referring to Fig. 4, the expansion link 41 direct pull trapezoid blocks 2 of telescopic component 4 move backward, and this trapezoid block 2 is suitable with the T-shaped chute of parts 1 tail end of loosing core by the T-shaped slide rail on its inclined side, and the corresponding parts 1 of loosing core that force exit in the core chamber of mould 7.Meanwhile, under Action of Gravity Field, the parts 1 of loosing core have the trend moving radially, but under coordinating with the T-shaped chute of pressing plate 31 by the T-shaped slide rail 61 of level on trapezoid block 2 second inclined sides 22, be that pressing plate 31 has draw power to trapezoid block 2, the situation that can effectively prevent trapezoid block 2 from occurring loosing core in the process of loosing core parts 1 move radially, avoid damaging expansion link 41 or pull moulding 8, not only effectively ensure product quality, also greatly extend service life, and on expansion link 41, be equipped with T shape connecting portion 42, make telescopic component 4 more stable with being connected of trapezoid block 2, the further reliability of raising work, overall structure is simple in addition, applicable to multiple kinds of molds 7, and effectively simplify mould 7 structures, reduce design time and the machining period of mould 7, shorten opening period, reduce mould 7 costs.
As described in the above embodiment the present invention, adopt structure same or analogous with it and the core-pulling device of other structure of obtaining, all in protection domain of the present invention.
Claims (8)
1. an injection mold core-pulling device, it is characterized in that, it comprises the parts of loosing core, trapezoid block, bearing and telescopic component, described bearing is fixed on mould one side, one side of described trapezoid block is provided with the first inclined side, opposite side is provided with the second inclined side, the front end of the described parts of loosing core stretches in the core chamber of mould, tail end is flexibly connected with the inclined side of trapezoid block by the first chute parts, and the second inclined side of this trapezoid block is flexibly connected with bearing by the second chute parts, the expansion link of described telescopic component is connected with trapezoid block, and can control the expanding-contracting action of this trapezoid block, the parts of loosing core described in respective drive stretch in the core chamber of mould or exit in this core chamber.
2. injection mold core-pulling device according to claim 1, it is characterized in that: described the first chute parts comprise a T-shaped chute and one and the suitable T-shaped slide rail of inclination of this T-shaped chute, the T-shaped slide rail of this inclination is arranged on the first inclined side of trapezoid block, the tail end of the parts of loosing core described in described T-shaped chute is arranged on.
3. injection mold core-pulling device according to claim 2, is characterized in that: the inclination angle beta of the first inclined side of described trapezoid block and the T-shaped slide rail that tilts angle of inclination γ's and be less than or equal to 13 degree.
4. injection mold core-pulling device according to claim 3, is characterized in that: described bearing comprises a pressing plate and two stands, and two stands is fixed on the both sides up and down of pressing plate by the vertical symmetry of pin.
5. injection mold core-pulling device according to claim 4, it is characterized in that: described the second chute parts comprise a T-shaped chute and one and the suitable T-shaped slide rail of level of this T-shaped chute, the T-shaped slide rail of this level is arranged on the second inclined side of trapezoid block, and described T-shaped chute is arranged on the middle part of described pressing plate.
6. injection mold core-pulling device according to claim 1, is characterized in that: tilt angle alpha≤8 ° of the second inclined side of described trapezoid block.
7. injection mold core-pulling device according to claim 1, is characterized in that: described telescopic component is high-voltage oil cylinder.
8. injection mold core-pulling device according to claim 1, is characterized in that: the head end of the expansion link of described telescopic component is provided with a T shape connecting portion, and is provided with the be connected recess suitable with the appearance profile of this T shape connecting portion corresponding to described trapezoid block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488413.XA CN103831949A (en) | 2012-11-26 | 2012-11-26 | Core pulling device of injection molding mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210488413.XA CN103831949A (en) | 2012-11-26 | 2012-11-26 | Core pulling device of injection molding mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103831949A true CN103831949A (en) | 2014-06-04 |
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ID=50795998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210488413.XA Pending CN103831949A (en) | 2012-11-26 | 2012-11-26 | Core pulling device of injection molding mold |
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| CN (1) | CN103831949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196489A (en) * | 2015-09-17 | 2015-12-30 | 苏州市振业模具有限公司 | Floating pin self-locking device for tunnel core-pulling mechanism |
| CN106141148A (en) * | 2015-03-27 | 2016-11-23 | 长城汽车股份有限公司 | Interlocking core drawing mechanism and mould |
-
2012
- 2012-11-26 CN CN201210488413.XA patent/CN103831949A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141148A (en) * | 2015-03-27 | 2016-11-23 | 长城汽车股份有限公司 | Interlocking core drawing mechanism and mould |
| CN105196489A (en) * | 2015-09-17 | 2015-12-30 | 苏州市振业模具有限公司 | Floating pin self-locking device for tunnel core-pulling mechanism |
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Application publication date: 20140604 |