CN202016178U - Inclined ejector device for injection mould - Google Patents
Inclined ejector device for injection mould Download PDFInfo
- Publication number
- CN202016178U CN202016178U CN2011200948896U CN201120094889U CN202016178U CN 202016178 U CN202016178 U CN 202016178U CN 2011200948896 U CN2011200948896 U CN 2011200948896U CN 201120094889 U CN201120094889 U CN 201120094889U CN 202016178 U CN202016178 U CN 202016178U
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- oblique top
- needle plate
- inclined ejector
- installation portion
- face
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Abstract
The utility model discloses an inclined ejector device for an injection mould. The inclined ejector device comprises an inclined ejector and an inclined ejector mounting part, wherein the inclined ejector slides relative to the inclined ejector mounting part and is rotatably arranged on the inclined ejector mounting part; the inclined ejector mounting part is arranged between a surface pin plate and a bottom pin plate of the injection mould; the bottom pin plate is provided with an unthreaded hole and a limiting screw; the limiting screw passes through the unthreaded hole, and the front end of the limiting screw is fixedly connected with the inclined ejector mounting part; and a compression spring is sleeved on a polished rod of the limiting screw and is positioned between the bottom of the unthreaded hole and the head of the limiting screw or is positioned between the bottom of the bottom pin plate and the head of the limiting screw. In the inclined ejector device for the injection mould, the compression spring is sleeved on the limiting screw, so that a certain pre-tensioning force is applied to the inclined ejector mounting part; when the inclined ejector device cannot be accurately restored due to thermal expansion and cold shrinkage, the inclined ejector device can be ensured to have certain buffering, and the problem of tension fracture of the screw or the inclined ejector is solved.
Description
Technical field
The utility model relates to a kind of plastic cement injection molding technology field, particularly a kind of oblique top device that is used on the injection mold.
Technical background
The oblique top device is comparatively extensive in the application of plastic mould field.The oblique top device is applicable to the less overhead structure of size of the inboard depanning of product usually.It comprises oblique top, oblique top cassette holder, oblique top box (oblique top cassette holder and oblique top box are combined into the oblique top installing component), and oblique top is closed and is located at oblique top and closes on the seat, and oblique top oblique top is relatively closed and slided and be installed on the oblique top box rotationally.After dynamic model and cover half die sinking, under the effect of the lengthwise movement of needle plate, oblique top is done a horizontal slip, to avoid the structures such as barb of product inside, carries out the smooth demoulding.But in the injection moulding generative process; because higher temperature relation causes expanding with heat and contract with cold of oblique top device; the situation that oblique top can not reset smoothly can appear; and needle plate is when push rod retreats under effect; cause breaking oblique top (for example A place in the accompanying drawing 1) or break problem such as oblique top screw through regular meeting, can directly influence the normal injection moulding production and the economic loss of mould like this.
In addition, in the plastic cement products design, the needs of a lot of products for fit on are arranged, pillar and bigger button bit are all arranged in the product the inside.For not being subjected to these button bits and pillar, the surface that guarantees product appearance has not been caused place water is concavo-convex to influence product appearance and the demoulding easily in injection moulding process, generally when manufacturing and designing, mould all does slide block with oblique top, benefit is can work as thimble when ejecting to use, but owing to laterally need the distance of slip bigger, therefore the vertical stroke of needle plate under the effect of injection machine push rod is also bigger, run duration is long, distortion can appear in needle plate, after causing oblique top to eject, when returning, needle plate can not reset fully, burr appears in the sealing position in the time of matched moulds once more, flash, the serious oblique top that causes ruptures.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and the oblique top device that is used for injection mold that can ensure the reliability that resets is provided, and avoids occurring breaking the accident of oblique top or oblique top screw.
The technical problem that the utility model further will solve is to provide a kind of and avoid owing to needle plate is out of shape the modified oblique top device that causes oblique top not reset fully.
The technical scheme that is used for the oblique top device of injection mold provided by the utility model is: a kind of oblique top device that is used for injection mold, comprise oblique top, the oblique top installation portion, oblique top is slided with respect to the oblique top installation portion and is installed in rotationally on the oblique top installation portion, the oblique top installation portion is installed between the face needle plate and end needle plate of injection mold, it is characterized in that: needle plate of the described end is provided with unthreaded hole and limited screw, limited screw passes unthreaded hole, its front end is fixedlyed connected with the oblique top installation portion, be arranged with the compression spring on the polished rod of limited screw, the compression spring is positioned between the head of the bottom of unthreaded hole and limited screw; Perhaps be positioned between the head of the bottom of end needle plate and limited screw.
The decrement of described compression spring is 2/5～3/5 of its drift.
Preferably, the decrement of described compression spring is 1/2 of its drift.
As further improvement of the utility model, described oblique top installation portion is limited between face needle plate and the end needle plate in vertical bottom surface by step end face on the face needle plate or face needle plate; Be provided with the gap of reservation face needle plate distortion between the step end face of described oblique top installation portion and its lengthwise position of qualification or the face needle plate bottom surface.
Generally, described gap is 0.15～0.3mm.
Preferably, described gap is 0.2mm.
Described oblique top installation portion comprises and is fixed together oblique top box and oblique top cassette holder that described oblique top and oblique top box are connected.
As improvement of the present utility model, described oblique top cassette holder size in the horizontal direction is greater than the oblique top box, and the oblique top cassette holder exceeds the part that coincides with the oblique top box and is set to heavy stand on the face relative with the oblique top box.
The height of described heavy stand is the size in gap.
The height of described heavy stand is 0.15～0.3mm.
The oblique top device that is used for injection mold that the utility model provides, by the compression of suit on limited screw spring, thereby the oblique top installation portion is applied certain pretension, when the oblique top device causes owing to expanding with heat and contract with cold can not accurately reset the time, guarantee that the oblique top device has certain buffering, avoid occurring the problem that screw is broken or oblique top is broken.By default deformation gap, avoid when needle plate is out of shape in addition, the oblique top device can not reset fully, guarantees that oblique top sealing position is not easy to occur burr and burr.
Description of drawings
The plastic injection mold that the utility model is used for the oblique top device of injection mold and uses this slide block device below in conjunction with the drawings and the specific embodiments is described further.
Accompanying drawing 1 is the exploded view of oblique top device in the utility model.
Cutaway view when accompanying drawing 2 is applied in matched moulds on the plastic injection mold for oblique top device in the utility model.
Accompanying drawing 3 is the cutaway view of other direction among Fig. 2.
Cutaway view when accompanying drawing 4 is applied in die sinking on the plastic injection mold for oblique top device in the utility model.
The specific embodiment
Shown in accompanying drawing 1 to 4, injection mold generally comprises cope match-plate pattern (not shown), lower bolster 13, supports square iron 5, the base plate 17 of lower bolster 13, is used to install the end needle plate 15 and the face needle plate 14 of thimble.The disclosed oblique top device of present embodiment mainly comprises oblique top installation portion and 8 liang of big parts of oblique top, and wherein the oblique top installation portion comprises oblique top box 1 and oblique top cassette holder 3, and it mainly is to be convenient to processing and assembling that the oblique top installation portion is split into oblique top box 1 and oblique top cassette holder 3.Oblique top box 1 and oblique top cassette holder 3 are fixed together by screw 4.The lower end of oblique top 8 and oblique top box 1 cooperatively interact, and oblique top 8 realizes and can turn and laterally slip with respect to oblique top box 1 by slide guide sheet 2.The upper end of oblique top 8 is fixed with oblique top mold insert 11 by screw 12.Above ramp-roof structure all belongs to existing mature technology, does not therefore introduce in detail.
After the oblique top device is installed on the injection mold, shown in accompanying drawing 2,3, between the lower bolster 13 of oblique top 8 and mould, be provided with oblique top guide pad 12, oblique top guide pad 12 is fixed on the lower bolster 13 of mould by screw 10, in the die sinking process, the motion of oblique top 8 is play the guiding role.
Oblique top cassette holder 3 size in the horizontal direction is greater than oblique top box 1, and oblique top cassette holder 3 and oblique top box 1 are installed in the stepped hole on the face needle plate 14, and vertically are being limited between face needle plate 14 and the end needle plate 15 by the step end face on the face needle plate 14; Simultaneously, be provided with the gap of reservation face needle plate 14 distortion between the step end face of oblique top cassette holder 3 and its lengthwise position of qualification.In general, above-mentioned gap is 0.15～0.3mm.Preferably, above-mentioned gap is about 0.2mm.This gap can be directly during by assembling preset clearance realize, also can exceed the part that coincides with the oblique top box and mill out heavy stand at the oblique top cassette holder on the face relative with the oblique top box, the height of heavy stand is approximately 0.15～0.3mm, preferably, highly be about 0.2mm.
Special feature of the present utility model is, on end needle plate 15, be provided with unthreaded hole, spring eye 16 and limited screw 7, limited screw 7 passes unthreaded hole and spring eye 16, its front end is done 3 with the oblique top box and is fixedlyed connected, be arranged with compression spring 6 on the polished rod of limited screw 7, compression spring 6 is positioned between the head of the bottom of spring eye 16 and limited screw 7.The decrement of compression spring 6 is 2/5～3/5 of its drift, and generally its decrement is about 1/2 of its drift.Adopt ф 18X35mm in the utility model, the length after its compression is 18.5mm, thereby the oblique top device is applied precompression.In addition, also can not establish spring eye 16 on the end needle plate 15, avoid the hole and get final product, compress like this between the head that spring 6 can directly be positioned at the bottom of end needle plate 15 and limited screw 7 but on the base plate 17 of mould, be provided with.Certainly, with respect to aforementioned structure, be relatively poor embodiment.
In addition, can also on face needle plate 14 and end needle plate 15, slot respectively, oblique top box 1 is positioned at the groove of face needle plate 14, and oblique top cassette holder 3 is positioned at the groove of end needle plate 15, is provided with the gap of reservation face needle plate 14 distortion between face needle plate 14 bottom surfaces of oblique top cassette holder 3 and its lengthwise position of qualification.This gap as above is approximately 0.15～0.3mm.
Fig. 4 is the schematic diagram of die opening state.Following in the process that face needle plate 14, end needle plate 15 eject at the oblique top device, along the direction shown in the arrow in the accompanying drawing 4 laterally slide an end distance from, thereby realize the demoulding.In the process of matched moulds again; if owing to expand with heat and contract with cold or flexural deformation etc. can not reset smoothly the time; owing on limited screw, be provided with the compression spring; therefore will produce the power of a buffering to the oblique top device; avoid to reset or to break oblique top smoothly, thereby the oblique top device of protection mould can not break screw under the normal injection moulding condition of production and oblique top is avoided economic loss.
In addition, contact position at oblique top device and face needle plate 14 is reserved certain clearance, also be about to about oblique top cassette holder " T " word both sides empty avoiding 0.2mm, in conjunction with the compression spring that is arranged on the limited screw, when becoming 14 shapes owing to the face needle plate and make that the oblique top device can not reset fully, the compression spring generation operation on the limited screw retracts original position with the oblique top device, avoid in the time of matched moulds once more, quality problems such as burr, flash appear in place, sealing position, oblique top upper end.
Claims (10)
1. oblique top device that is used for injection mold, comprise oblique top, oblique top installation portion, oblique top is slided with respect to the oblique top installation portion and is installed in rotationally on the oblique top installation portion, the oblique top installation portion is installed between the face needle plate and end needle plate of injection mold, it is characterized in that: needle plate of the described end is provided with unthreaded hole and limited screw, limited screw passes unthreaded hole, its front end is fixedlyed connected with the oblique top installation portion, be arranged with the compression spring on the polished rod of limited screw, the compression spring is positioned between the head of the bottom of unthreaded hole and limited screw; Perhaps be positioned between the head of the bottom of end needle plate and limited screw.
2. the oblique top device that is used for injection mold according to claim 1 is characterized in that: the decrement of described compression spring is 2/5～3/5 of its drift.
3. the oblique top device that is used for injection mold according to claim 2 is characterized in that: the decrement of described compression spring is 1/2 of its drift.
4. according to each described oblique top device that is used for injection mold of claim 1 to 3, it is characterized in that: described oblique top installation portion is limited between face needle plate and the end needle plate in vertical bottom surface by step end face on the face needle plate or face needle plate; Be provided with the gap of reservation face needle plate distortion between the step end face of described oblique top installation portion and its lengthwise position of qualification or the face needle plate bottom surface.
5. the oblique top device that is used for injection mold according to claim 4 is characterized in that: described gap is 0.15～0.3mm.
6. require 5 described plastic injection molds according to power, it is characterized in that: described gap is 0.2mm.
7. require 5 described plastic injection molds according to power, it is characterized in that: described oblique top installation portion comprises and is fixed together oblique top box and oblique top cassette holder that described oblique top and oblique top box are connected.
8. require 7 described plastic injection molds according to power, it is characterized in that: described oblique top cassette holder size in the horizontal direction is greater than the oblique top box, and the oblique top cassette holder exceeds the part that coincides with the oblique top box and is set to heavy stand on the face relative with the oblique top box.
9. require 7 described plastic injection molds according to power, it is characterized in that: the height of described heavy stand is the size in gap.
10. plastic injection mold according to claim 9 is characterized in that: the height of described heavy stand is 0.15～0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200948896U CN202016178U (en) | 2011-04-02 | 2011-04-02 | Inclined ejector device for injection mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200948896U CN202016178U (en) | 2011-04-02 | 2011-04-02 | Inclined ejector device for injection mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202016178U true CN202016178U (en) | 2011-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200948896U Expired - Fee Related CN202016178U (en) | 2011-04-02 | 2011-04-02 | Inclined ejector device for injection mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202016178U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729416A (en) * | 2011-04-02 | 2012-10-17 | 毅昌金型（东莞）五金制品有限公司 | Angle ejection device for injection mold |
| CN107478422A (en) * | 2017-08-10 | 2017-12-15 | 厦门大学 | A kind of method and apparatus of Slanted ejecting mechanism of injection mould monitoring |
| CN110406052A (en) * | 2018-04-28 | 2019-11-05 | 深圳市美好创亿医疗科技有限公司 | With the injection mold for thermally expanding adaptive ejecting mechanism |
-
2011
- 2011-04-02 CN CN2011200948896U patent/CN202016178U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729416A (en) * | 2011-04-02 | 2012-10-17 | 毅昌金型（东莞）五金制品有限公司 | Angle ejection device for injection mold |
| CN107478422A (en) * | 2017-08-10 | 2017-12-15 | 厦门大学 | A kind of method and apparatus of Slanted ejecting mechanism of injection mould monitoring |
| CN110406052A (en) * | 2018-04-28 | 2019-11-05 | 深圳市美好创亿医疗科技有限公司 | With the injection mold for thermally expanding adaptive ejecting mechanism |
| CN110406052B (en) * | 2018-04-28 | 2021-09-17 | 深圳市美好创亿医疗科技股份有限公司 | Injection mold with thermal expansion self-adaptive ejection mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20130402 |