CN102848535A - Ejection mechanism for injection molding mold - Google Patents
Ejection mechanism for injection molding mold Download PDFInfo
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- CN102848535A CN102848535A CN2012103435326A CN201210343532A CN102848535A CN 102848535 A CN102848535 A CN 102848535A CN 2012103435326 A CN2012103435326 A CN 2012103435326A CN 201210343532 A CN201210343532 A CN 201210343532A CN 102848535 A CN102848535 A CN 102848535A
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- cylindrical shell
- sleeve body
- ejection
- ejects
- sleeve
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Abstract
The invention discloses an ejection mechanism for an injection molding mold, wherein the ejection mechanism comprises a sleeve pedestal installed on a male mold ejection plate and a sleeve body arranged on the sleeve pedestal, an axle hole used for mounting a pin shaft is arranged in the sleeve body, the sleeve body is a double-joint sleeve body, the double-joint sleeve body comprises a movable sleeve body connected with the pedestal and an ejection sleeve body, a conical connecting body with a gradually decreasing outside diameter is arranged at the crossing site of the ejection sleeve body and the movable sleeve body, the movable sleeve body is arranged in a male template, the outside diameter of the ejection sleeve body is smaller than that of the movable sleeve body, and the inside diameter of the ejection sleeve body is equal to that of the movable sleeve body. The double-joint sleeve body with outside diameter difference is utilized in the invention, so that the sleeve end face is used for ejecting the formed product during the ejection process, the double-joint sleeve body applies a uniform ejection force on the formed product to guarantee the demolding, reduce the breakage of the formed product and generate no ejection mark on the outline of the formed product, and the ejection mechanism is simple and reasonable in structure, high in stability and is capable of avoiding such demolding failures of the formed product as breakage, scratch, etc.
Description
Technical field
What the present invention relates to is a kind of ejector member of ejection shaping mould, and what be specifically related to is a kind of ejection shaping mould ejecting mechanism structure.
Background technology
Injection molding is changeable with the structure of mould, different gate forms, different pushing methods and different mould structures, just can form various types of mold form, therefore it is rather difficult that wish is clearly classified mould, hereby in general common classification mode, can simply distinguish according to mold structure. double-plate mould, shree plates mold mould, runnerless mould tool and back flowing mold.This mould penetrates action complete when the injection molding product, filling then forms the work that product eject after the material cooled of formingspace is solidified, and this moment, fixation side and the drawer at movable side of forming machine were opened stroke, and mould starts as the boundary take die joint and opens.Usually be fixed in the mould of movable plate, drawer at movable side and movable plate retreat simultaneously, and then the knock-pin of mat forming machine makes the ejecting mechanism start of mould, and formed products is ejected.In order to improve injection molding efficient, improve the formed products quality, the easily rapidly demoulding, eject, and reach automation mechanized operation, not only formed products is annotated, the demoulding of runner, ejecting all must the most appropriate method of selection.
Formed products eject the shape that depends on moulding material, formed products, the structure of mould, when ejecting, preferably do not break, scratch etc., and really the demoulding and fault are few, yet what fault was maximum in the existing mold is ejecting mechanism, as knock pin fracture, crooked, block etc., must be able to easily study for a second time courses one has flunked or change, this is the principle that determines extrusion method.The main purpose that formed products ejects is to make the formed products break away from moulds that shrinks the heart type that is bonded to, dark rib, protruding hub etc. because being shaped, thereby must select to eject the position in the large place of ejection resistance, but the formed products of same shape is also selected different extrusion methods because of the outward appearance, precision, the formability that require.
Summary of the invention
For the deficiency that exists on the prior art, the present invention seeks to be to provide a kind of Stability Analysis of Structures, the ejecting force even action, the ejection shaping mould ejecting mechanism that ejects by ejecting sleeve end face, can guarantee the demoulding, reduce formed products and break, avoided that formed products is residual in appearance to eject vestige and existing knock pin fractures, crooked, the generation of the phenomenon such as blocking.
To achieve these goals, the present invention realizes by the following technical solutions:
The ejection shaping mould ejecting mechanism, it comprises the male model fixed head, be arranged on the lower liftout plate on the male model fixed head, be arranged on upper ejector plate and the male model plate that is arranged on the upper ejector plate on the lower liftout plate, be provided with male die core at described male model plate, be provided with die cavity on the described male die core, it is characterized in that, on the described male model fixed head guide pins is set, be provided be used to the binodal that ejects formed products at described upper ejector plate and eject sleeve, described binodal ejects that sleeve passes the male model plate and male die core extends in the die cavity, be provided with guide pins in described binodal sleeve, described guide pins is fixed on the male model fixed head.
Described binodal ejects sleeve and comprises the base that is fixed on upper ejector plate, is arranged on the movable cylindrical shell on the base and is arranged on the cylindrical shell that ejects on the movable cylindrical shell, what adopted the described junction that ejects cylindrical shell and movable cylindrical shell is the taper connection body that external diameter successively decreases, described taper connection body is arranged in the male model plate, the described external diameter of cylindrical shell that ejects is less than the external diameter of movable cylindrical shell, and the described internal diameter that ejects cylindrical shell equates with the internal diameter of movable cylindrical shell.
Spacing between described taper connection body and the male die core is 3-7mm, and it is as ejection stroke; The described barrel thickness that ejects cylindrical shell is 0.6-0.8mm.
According to described ejection shaping mould ejecting mechanism, wherein, the barrel thickness of described movable cylindrical shell is 1-1.4mm.
According to described ejection shaping mould ejecting mechanism, wherein, the length of described movable cylindrical shell is less than the length that ejects cylindrical shell.
The present invention is by adopting binodal to eject sleeve, and by guide pins do guiding to, make it adopt sleeve end face to eject formed products, solved that existing knock pin fractures, crooked, the generation of the phenomenon such as blocking; It has uniform ejecting force and acts on formed products, can guarantee the demoulding, reduces formed products and breaks, and make the in appearance not residual vestige that ejects of formed products, and it is simple and reasonable for structure, and stability is high, has avoided the demoulding faults such as formed products breaks, scratch.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the present invention.
Referring to Fig. 1, the ejection shaping mould ejecting mechanism of the present embodiment, it is applied in the ejection shaping mould, this ejection shaping mould comprises male model and master mold, the sleeve that ejects of the present embodiment is installed in the male model, and male model comprises male model fixed head 1, is installed in lower liftout plate 2 on the male model fixed head 1, is installed in upper ejector plate 3 on the lower liftout plate 2, is installed in the male model plate 5 of upper ejector plate 3 tops and is arranged on male die core 6 on the male model plate 5, is provided with die cavity 9 on this male die core.
In the present embodiment, be provided with between upper ejector plate 3 and the male model plate 5 and eject spacing 3, be convenient to the movement of upper and lower liftout plate.At upper ejector plate 4 binodal is installed and ejects sleeve 8, in binodal ejects sleeve 8, be equipped with and be fixed on male model and fix, guide pins 7 on 1, this binodal ejects sleeve 8 and comprises the base 81 that is fixed on upper ejector plate 3, is arranged on the movable cylindrical shell 82 on the base 81 and is arranged on and eject cylindrical shell 84 on the movable cylindrical shell 82, what adopted the described junction that ejects cylindrical shell 84 and movable cylindrical shell 82 is the taper connection body 83 that external diameter successively decreases, described taper connection body 83 is arranged in the male model plate 5, spacing between itself and the male die core 6 is 3-7mm, consists of ejection stroke.The described external diameter of cylindrical shell 84 that ejects is less than the external diameter of movable cylindrical shell 82, and the described internal diameter that ejects cylindrical shell 84 equates with the internal diameter of movable cylindrical shell 82.
Eject cylindrical shell 84, taper connection body 83, movable cylindrical shell 82 and base 81 and be integral structure, be provided with in it and be convenient to the axis hole that guide pins is passed.In the present embodiment, the described barrel thickness that ejects cylindrical shell 84 is 0.6-0.8mm, and the barrel thickness of movable cylindrical shell 82 is 1-1.4mm.The processability of sleeve (sleeve) is good, reaches consideration use sleeve more than 0.8 at wall thickness during design, and pin is less than φ 1.5mm in the smallclothes, and sleeve is done binodal, and large part sleeve is that the quill sidewall can not be less than 1mm.
When the cylinder (BOSS) that penetrates the finished product protrusion, the post center is porose, ejecting the position is difficult for selecting, can use knock pin to be installed on the bottom plate as the heart type pin this moment, and do not eject effect, and select again the suitable sleeve that ejects, be placed on the heart type pin, be fixed in lower roof plate, utilize binodal to eject sleeve finished product is ejected.
The present invention is by adopting binodal to eject sleeve 8, and by guide pins 7 do guiding to, make it adopt sleeve end face to eject formed products, solved that existing knock pin fractures, crooked, the generation of the phenomenon such as blocking; It has uniform ejecting force and acts on formed products, can guarantee the demoulding, reduces formed products and breaks, and make the in appearance not residual vestige that ejects of formed products, and it is simple and reasonable for structure, and stability is high, has avoided the demoulding faults such as formed products breaks, scratch.
Above demonstration and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. ejection shaping mould ejecting mechanism, it comprises the male model fixed head, be arranged on the lower liftout plate on the male model fixed head, be arranged on upper ejector plate and the male model plate that is arranged on the upper ejector plate on the lower liftout plate, be provided with male die core at described male model plate, be provided with die cavity on the described male die core, it is characterized in that, on the described male model fixed head guide pins is set, be provided be used to the binodal that ejects formed products at described upper ejector plate and eject sleeve, described binodal ejects that sleeve passes the male model plate and male die core extends in the die cavity, be provided with guide pins in described binodal sleeve, described guide pins is fixed on the male model fixed head.
2. ejection shaping mould ejecting mechanism according to claim 1, it is characterized in that, described binodal ejects sleeve and comprises the base that is fixed on upper ejector plate, is arranged on the movable cylindrical shell on the base and is arranged on the cylindrical shell that ejects on the movable cylindrical shell, what adopted the described junction that ejects cylindrical shell and movable cylindrical shell is the taper connection body that external diameter successively decreases, described taper connection body is arranged in the male model plate, the described external diameter of cylindrical shell that ejects is less than the external diameter of movable cylindrical shell, and the described internal diameter that ejects cylindrical shell equates with the internal diameter of movable cylindrical shell.
3. ejection shaping mould ejecting mechanism according to claim 2 is characterized in that, the spacing between described taper connection body and the male die core is 3-7mm.
4. ejection shaping mould ejecting mechanism according to claim 2 is characterized in that, the described barrel thickness that ejects cylindrical shell is 0.6-0.8mm.
5. ejection shaping mould ejecting mechanism according to claim 2 is characterized in that, the barrel thickness of described movable cylindrical shell is 1-1.4mm.
6. ejection shaping mould ejecting mechanism according to claim 1 is characterized in that, the length of described movable cylindrical shell is less than the length that ejects cylindrical shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103435326A CN102848535A (en) | 2012-09-17 | 2012-09-17 | Ejection mechanism for injection molding mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103435326A CN102848535A (en) | 2012-09-17 | 2012-09-17 | Ejection mechanism for injection molding mold |
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| Publication Number | Publication Date |
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| CN102848535A true CN102848535A (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103435326A Pending CN102848535A (en) | 2012-09-17 | 2012-09-17 | Ejection mechanism for injection molding mold |
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| CN (1) | CN102848535A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115902A (en) * | 2016-11-28 | 2018-06-05 | 株式会社技术可拉茨 | The ejecting mechanism of molding die, the molding die for possessing the ejecting mechanism |
| CN109849293A (en) * | 2019-01-24 | 2019-06-07 | 精诚工科汽车***有限公司 | Injection molding machine ejecting structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030012844A1 (en) * | 2000-06-19 | 2003-01-16 | Glenn Starkey | Core pin and sleeve and method of using same |
-
2012
- 2012-09-17 CN CN2012103435326A patent/CN102848535A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030012844A1 (en) * | 2000-06-19 | 2003-01-16 | Glenn Starkey | Core pin and sleeve and method of using same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115902A (en) * | 2016-11-28 | 2018-06-05 | 株式会社技术可拉茨 | The ejecting mechanism of molding die, the molding die for possessing the ejecting mechanism |
| CN108115902B (en) * | 2016-11-28 | 2020-04-07 | 株式会社技术可拉茨 | Ejection mechanism of forming die and forming die with ejection mechanism |
| US10870228B2 (en) | 2016-11-28 | 2020-12-22 | Technocrats Corporation | Molding die projection mechanism and molding die comprising same projection mechanism |
| CN109849293A (en) * | 2019-01-24 | 2019-06-07 | 精诚工科汽车***有限公司 | Injection molding machine ejecting structure |
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Application publication date: 20130102 |