CN203876167U - Novel ejector sleeve assembly - Google Patents
Novel ejector sleeve assembly Download PDFInfo
- Publication number
- CN203876167U CN203876167U CN201420215373.6U CN201420215373U CN203876167U CN 203876167 U CN203876167 U CN 203876167U CN 201420215373 U CN201420215373 U CN 201420215373U CN 203876167 U CN203876167 U CN 203876167U
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- CN
- China
- Prior art keywords
- ejector sleeve
- centrepin
- draw
- cavity
- groove
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Abstract
The utility model relates to a novel ejector sleeve assembly which comprises a center pin and an ejector sleeve, wherein the center pin can be mounted on a moving clamping plate and used for plastic part molding, and the ejector sleeve is arranged on the center pin in a sleeving manner and used for ejecting out molded plastic parts; the ejector sleeve comprises a first ejector sleeve and a second ejector sleeve which are respectively arranged on the lower part and the upper part of the center pin in a sleeving manner and detachably connected through an ejector sleeve clamping mechanism. The ejector sleeve assembly can meet the long length requirement of relative plastic injection parts in car inside and outside ornaments on the ejector sleeve assembly, is high in strength, and can meet the use requirement on injection molds.
Description
Technical field
The utility model relates to a kind of injection mold assembly, relates in particular to a kind of novel ejector sleeve assembly.
Background technology
In injection mold field, ejector sleeve is the tubulose ejection piece using for ejecting the lip-deep protruding bore portions of working of plastics such as appliance shell, inner and outer decorative parts of automobile, and itself and centrepin support the use.Centrepin is for the protruding bore portion in moulding plastic surface, conventionally be installed on Bottom clamp plate and maintain static, in injection moulding process, the protruding bore portion of shaped article can shrink and tightly stick on mould because of moulding, therefore need very large ejecting force during the demoulding, if only use push rod to eject, can be white on generation top, shaped article surface too greatly because of ejecting force, protruding bore portion also may be pulled off sometimes, remain in mould, and the ejector sleeve that use coordinates with centrepin just can head it off.But the existing ejector sleeve assembly being formed by ejector sleeve and centrepin with matching, the centrepin being used in plastic mould as disclosed in Chinese utility model patent CN201205745Y and be set in that it is outside and can be along gas ejector sleeve in axial sliding, because considering its intensity and requirement on machining accuracy, the overall length of ejector sleeve assembly can not surpass 500mm, but the mouldings such as the instrument board in inner and outer decorative parts of automobile, bumper, its mold height is poor larger, require the length of ejector sleeve assembly conventionally in 900mm left and right, therefore existing ejector sleeve assembly can not meet instructions for use.
Utility model content
For solving the deficiencies in the prior art, the utility model provides a kind of novel ejector sleeve assembly, it can meet the big-length requirement of relevant moulding to ejector sleeve assembly in inner and outer decorative parts of automobile, and its intensity is higher, can meet the instructions for use to injection mold.
For achieving the above object, novel ejector sleeve assembly of the present utility model comprise can be installed on Bottom clamp plate, for the centrepin of plastic parts moulding, and being set in ejector sleeve on described centrepin, that plastic after moulding is ejected, described ejector sleeve comprises and is set in respectively the first ejector sleeve centrepin bottom and top, that be detachably connected via ejector sleeve clamping mechanism and the second ejector sleeve.Adopt above-mentioned technical scheme, because the ejector sleeve being sheathed on centrepin is set to the first ejector sleeve and the second ejector sleeve that split links together, the ejector sleeve of bipartial can increase the bulk strength of ejector sleeve, the deflection deformation of ejector sleeve in the time of can avoiding ejecting, thereby can in the situation that the requirement of strength when increasing the length of ejector sleeve and sheathed centrepin in the inner and guaranteeing that it uses while meeting injection moulding, use.
As the restriction to aforesaid way, described ejector sleeve clamping mechanism comprises the ejector sleeve draw-in groove that embeds mouth that has that is arranged on the first ejector sleeve top, and the corresponding ejector sleeve dop coordinating with described ejector sleeve draw-in groove setting-in that is arranged on the second ejector sleeve bottom.
As the restriction to aforesaid way, described centrepin comprises the first centrepin and the second centrepin can connection mechanism being detachably connected via centrepin.Centrepin is also set to the bipartial that split connects, also makes the centrepin of growing also there is better intensity, thereby can further increase the intensity of ejector sleeve assembly integral body.
As the restriction to aforesaid way, described centrepin clamping mechanism comprises the centrepin draw-in groove that embeds mouth that has that is arranged on the first centrepin top, and the corresponding centrepin dop coordinating with described centrepin draw-in groove setting-in that is arranged on the second centrepin bottom.
As the restriction to aforesaid way, described the first ejector sleeve and the second ejector sleeve at least on one movable sleeve be provided with ejector sleeve guide pin bushing.Ejector sleeve guide pin bushing is set on ejector sleeve and can guarantees that ejector sleeve slip is more smooth and easy, and ejector sleeve generation deflection deformation is to increase the effect of ejector sleeve assembly bulk strength can to play certain preventing.
In sum, adopt the technical solution of the utility model, this novel ejector sleeve assembly can meet the big-length requirement of relevant moulding to ejector sleeve assembly in inner and outer decorative parts of automobile, and intensity is higher, can meet the instructions for use to injection mold.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is done further to describe in detail:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of the first ejector sleeve;
Fig. 3 is the partial enlarged drawing of A part in Fig. 2;
Fig. 4 is the structural representation of the first ejector sleeve ejector sleeve draw-in groove part;
Fig. 5 is the structural representation of the second ejector sleeve;
Fig. 6 is the partial enlarged drawing of C part in Fig. 1;
Fig. 7 is the structural representation of the first centrepin;
Fig. 8 is the partial enlarged drawing of B part in Fig. 7;
Fig. 9 is the partial enlarged drawing of D part in Fig. 1;
In figure: 1, the first ejector sleeve; 2, the second ejector sleeve; 3, the first centrepin; 4, the second centrepin; 5, ejector sleeve guide pin bushing; 6, the first cavity; 7, the second cavity; 8, ejector sleeve draw-in groove cavity; 9, ejector sleeve connects cavity; 10, ejector sleeve draw-in groove embeds mouth; 11, ejector sleeve gland; 12, ejector sleeve dop; 13, the second ejector sleeve cavity; 14, centrepin gland; 15, centrepin draw-in groove cavity; 16, centrepin draw-in groove embeds mouth; 17, centrepin connects cavity; 18, centrepin dop.
The specific embodiment
The present embodiment relates to a kind of novel ejector sleeve assembly, as shown in Figure 1, it comprises the centrepin that can be installed on not shown Bottom clamp plate, and be movably set in the ejector sleeve on this centrepin, described ejector sleeve comprise be set in the first ejector sleeve 1 of centrepin bottom and be set in centrepin top and via dismountable the second ejector sleeve 2 linking together with the first ejector sleeve 1 of ejector sleeve clamping mechanism.By ejector sleeve whole installation, it is assembled its bulk strength that increases, outside at the first ejector sleeve 1 in the present embodiment is also arranged with ejector sleeve guide pin bushing 5, it is more smooth and easy when ejector sleeve guide pin bushing 5 can make the integral body of the first ejector sleeve 1 and the second ejector sleeve 2 slide along centrepin, certainly also can also set up guide pin bushing in the outside of the second ejector sleeve 2 if necessary, and for increasing the bulk strength of centrepin, the centrepin in the present embodiment is also set to comprise the split type of the first centrepin 3 of linking together via centrepin clamping mechanism and the second centrepin 4.
The structure of the first ejector sleeve 1 is as shown in Fig. 2 to Fig. 4, it is the body of a hollow, in its bottom, be provided with the ejector sleeve gland 11 of protrusion, ejector sleeve gland 11 is for the first ejector sleeve 1 being installed on to the movable plate of injection mold, to slide along sheathed centrepin within it under the drive of movable plate.In the present embodiment, to be set to external diameter smaller at the top of the first ejector sleeve 1, after being connected with the second ejector sleeve 2, makes ejector sleeve overall structure attractive in appearance well-balanced, and the top of certain the first ejector sleeve 1 also can be constant and keep identical with other parts external diameter.
In the first ejector sleeve 1 inside, comprise the first cavity 6 that internal diameter is larger, and second cavity 7 less with the first cavity 6 internal diameter coaxial and that be connected, in the smaller top of the external diameter of the first ejector sleeve 1, its top end face a distance of distance is provided with ejector sleeve draw-in groove cavity 8 coaxial with the second cavity 7 and that be connected, the internal diameter of ejector sleeve draw-in groove cavity 8 is greater than the second cavity 7, and there is certain altitude, between the top end face of ejector sleeve draw-in groove cavity 8 and the first ejector sleeve 1, be provided with ejector sleeve draw-in groove cavity 8 ejector sleeve coaxial and that be connected and be connected cavity 9, the internal diameter that ejector sleeve connects cavity 9 is less than ejector sleeve draw-in groove cavity 8, but be greater than the second cavity 7, ejector sleeve connects cavity 9, ejector sleeve draw-in groove cavity 8, the second cavity 7 and the first cavity 6 have formed the hollow cavity that connects the first ejector sleeve 1 inside jointly.
At the top of the first ejector sleeve 1, on the tube wall at ejector sleeve draw-in groove cavity 8 and ejector sleeve connection cavity 9 places, also offer connection the first ejector sleeve 1 outer wall and be connected the ejector sleeve draw-in groove embedding mouth 10 between cavity 9 with ejector sleeve draw-in groove cavity 8 and ejector sleeve, ejector sleeve draw-in groove embed mouthfuls 10 can be divided into ejector sleeve connect cavity 9 and with ejector sleeve draw-in groove cavity 8 corresponding two parts up and down respectively, the A/F of every part on its residing first ejector sleeve 1 cross section is all identical with the inner diameter values of ejector sleeve draw-in groove cavity 8 or ejector sleeve connection cavity 9.Ejector sleeve draw-in groove cavity 8, ejector sleeve connect cavity 9 and ejector sleeve draw-in groove embeds mouthful 10 ejector sleeve draw-in groove parts that formed in aforementioned ejector sleeve clamping mechanism.The second ejector sleeve 2 embeds mouth 10 by ejector sleeve draw-in groove and is inlaid in ejector sleeve draw-in groove cavity 8 and ejector sleeve connection cavity 9, thereby realizes the clamping between the second ejector sleeve 2 and the first ejector sleeve 1.
The structure of the second ejector sleeve 2 as shown in Figure 5, it is also a hollow tube, in its bottom, be provided with the ejector sleeve dop 12 of evagination, be the second ejector sleeve cavity 13 of up/down perforation within it, the internal diameter of the second ejector sleeve cavity 13 is identical with the internal diameter of the second cavity 7 in the first ejector sleeve 1, the external diameter of the second ejector sleeve 2 is slightly less than the internal diameter that ejector sleeve connects cavity 9, and the external diameter of ejector sleeve dop 12 is also slightly less than the internal diameter of ejector sleeve draw-in groove cavity 8, can make thus one end that the second ejector sleeve 2 has an ejector sleeve dop 12 embed mouthfuls 10 by the ejector sleeve draw-in groove at the first ejector sleeve 1 top is embedded into ejector sleeve draw-in groove cavity 8 and is connected in cavity 9 with ejector sleeve, structure after its embedding can be as shown in Figure 6, together with the second ejector sleeve 2 has been connected to the first ejector sleeve 1 thus, and by the second ejector sleeve cavity 13, the second cavity 7 and the first cavity 6 have formed the hollow cavity in ejector sleeve integral body, this hollow cavity is for the sheathed centrepin being formed by the first centrepin 3 and the second centrepin 4 separable assembleds.
The structure of the first centrepin 3 as shown in Figures 7 and 8, it is a cylinder, in its bottom, be provided with the centrepin gland 14 of evagination, centrepin gland 14 can be used for centrepin to be installed on Bottom clamp plate, at the top of the first centrepin 3, be provided with the centrepin draw-in groove in aforesaid centrepin clamping mechanism, the structure similar of the structure of centrepin draw-in groove and ejector sleeve draw-in groove, it comprises the centrepin draw-in groove cavity 15 that is arranged on its top end face a distance of distance in the first centrepin 3 tops, between centrepin draw-in groove cavity 15 and the first centrepin top end face, be provided with centrepin draw-in groove cavity 15 centrepin coaxial and that be connected and be connected cavity 17, also be included in centrepin draw-in groove cavity 15 and centrepin and connect the centrepin draw-in groove embedding mouth 16 arranging on the first centrepin outer wall at cavity 17 places, one end that the second centrepin 4 is provided with the centrepin dop 18 of evagination by it is embedded in mouthful 16 embedding centrepin draw-in groove cavitys 15 and centrepin connection cavity 17 and is realized the clamping between the second centrepin 4 and the first centrepin 3 by centrepin draw-in groove, concrete structure during its clamping can be as shown in Figure 9, and that one end of the second centrepin 4 has the cylindrical structure of evagination centrepin dop 18 is comparatively simple, do not repeat them here.
In the present embodiment, the external diameter of the first centrepin 3 is slightly less than the internal diameter of the first cavity 6 in the first ejector sleeve 1, the external diameter of the second centrepin 4 is slightly less than the internal diameter of the second ejector sleeve cavity 13, thereby can make the centrepin integral body being formed by the first centrepin 3 and the second centrepin 4 separable assembleds be sheathed on smoothly in the inner chamber of ejector sleeve integral body, and can make to have freely and mutually slide between them.Certainly, the present embodiment is that the clamping mechanism of the first centrepin 3 and the second centrepin 4 is partly arranged on the situation in the first ejector sleeve 1, and except this kind arranges form, the clamping mechanism part of centrepin integral body also can be for being arranged in the second ejector sleeve 2, it is substantially identical with the aforesaid structure being arranged in the first ejector sleeve 1 that this kind arranges structure, no longer repeats.
This novel ejector sleeve assembly first connects into centrepin integral body by the first centrepin 3 and the second centrepin 4 in use, and then the first ejector sleeve 1 and the second ejector sleeve 2 are connected into ejector sleeve integral body and be sheathed on centrepin on the whole, because ejector sleeve is whole and centrepin integral body is the split type of two-section, thereby can in the situation that having increased its length, can guarantee its intensity again, realize in the use as under the big-length injection mold requirements such as automotive upholstery.
Claims (5)
1. a novel ejector sleeve assembly, comprise can be installed on Bottom clamp plate, for the centrepin of plastic parts moulding, and be set in ejector sleeve on described centrepin, that plastic after moulding is ejected, it is characterized in that: described ejector sleeve comprises and is set in respectively the first ejector sleeve centrepin bottom and top, that be detachably connected via ejector sleeve clamping mechanism and the second ejector sleeve.
2. novel ejector sleeve assembly according to claim 1, it is characterized in that: described ejector sleeve clamping mechanism comprises the ejector sleeve draw-in groove that embeds mouth that has that is arranged on the first ejector sleeve top, and the corresponding ejector sleeve dop coordinating with described ejector sleeve draw-in groove setting-in that is arranged on the second ejector sleeve bottom.
3. novel ejector sleeve assembly according to claim 1, is characterized in that: described centrepin comprises the first centrepin and the second centrepin can connection mechanism being detachably connected via centrepin.
4. novel ejector sleeve assembly according to claim 3, it is characterized in that: described centrepin clamping mechanism comprises the centrepin draw-in groove that embeds mouth that has that is arranged on the first centrepin top, and the corresponding centrepin dop coordinating with described centrepin draw-in groove setting-in that is arranged on the second centrepin bottom.
5. according to the novel ejector sleeve assembly described in any one in claim 1 to 4, it is characterized in that: described the first ejector sleeve and the second ejector sleeve at least on one movable sleeve be provided with ejector sleeve guide pin bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215373.6U CN203876167U (en) | 2014-04-30 | 2014-04-30 | Novel ejector sleeve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420215373.6U CN203876167U (en) | 2014-04-30 | 2014-04-30 | Novel ejector sleeve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203876167U true CN203876167U (en) | 2014-10-15 |
Family
ID=51676708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420215373.6U Expired - Fee Related CN203876167U (en) | 2014-04-30 | 2014-04-30 | Novel ejector sleeve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203876167U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962717A (en) * | 2017-11-21 | 2018-04-27 | 中山市华志模具精密设备科技有限公司 | A kind of two level ejector sleeve needle assemblies |
| CN108995157A (en) * | 2018-08-30 | 2018-12-14 | 珠海格力精密模具有限公司 | Push pipe assembly and mold |
-
2014
- 2014-04-30 CN CN201420215373.6U patent/CN203876167U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962717A (en) * | 2017-11-21 | 2018-04-27 | 中山市华志模具精密设备科技有限公司 | A kind of two level ejector sleeve needle assemblies |
| CN108995157A (en) * | 2018-08-30 | 2018-12-14 | 珠海格力精密模具有限公司 | Push pipe assembly and mold |
| CN108995157B (en) * | 2018-08-30 | 2023-10-03 | 珠海格力精密模具有限公司 | Push tube assembly and die |
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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: 20141015 |