CN105773933A - Injection mold ejection device for automobile bumpers - Google Patents
Injection mold ejection device for automobile bumpers Download PDFInfo
- Publication number
- CN105773933A CN105773933A CN201410815710.XA CN201410815710A CN105773933A CN 105773933 A CN105773933 A CN 105773933A CN 201410815710 A CN201410815710 A CN 201410815710A CN 105773933 A CN105773933 A CN 105773933A
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- Prior art keywords
- wedge block
- ejection device
- return
- wedge
- ejection
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold ejection device for automobile bumpers, and belongs to the technical field of injection molding parts of automobiles. The injection mold ejection device is used for solving the problem that existing injection mold ejection devices with the adjustable ejection distance are easily jammed in the return process. The injection mold ejection device comprises a wedge-shaped sliding block and an ejection pin plate located in front of an inclined surface of the wedge-shaped sliding block, a sliding rail accepting sliding of the wedge-shaped sliding block is arranged under the wedge-shaped sliding block, a plurality of ejection pins used for ejecting injection molds are arranged on the ejection pin plate, and ejection pin return springs are arranged on the outer sides of the ejection pins in a sleeving mode. The injection mold ejection device is characterized in that rolling wheels capable of rolling relative to the inclined surface of the wedge-shaped sliding block are arranged on the ejection pin plate, and the inclined surface of the wedge-shaped sliding block is provided with a groove or a protrusion part matched with the rolling wheels. According to the injection mold ejection device, the ejection process and the return process of the injection mold ejection device are smoother through rolling friction and improvements on a return device.
Description
Technical field
The invention belongs to automobile injection moulding parts technical field, specifically, be the bumper injection mould ejection device of a kind of improvement.
Background technology
Bumper is the safety device absorbing the foreign impacts power that relaxes, protection vehicle body front and rear part, plays the effect of protection people and car.Along with the development of auto industry, bumper has also moved towards on the road of innovation as a kind of important safety device.Current automobile front/rear collision bumper, except keeping original defencive function, also to pursue the harmony with car body moulding and unification, the lightweight of pursuit itself.In order to reach this purpose, the front/rear collision bumper of car have employed relatively common Polyester and polypropylene-based plastics, i.e. so-called plastic bumper.
In the manufacture process of plastic bumper, mostly adopting now injection mold integrated injection molding, it can avoid process complex in installation process.Owing to people are also more strict to the requirement of automobile appearance quality, particularly (thin-walled parts fixed effect is poor for this thin-walled parts of bumper, in actual moulding, generally to set up BOSS post and fix to strengthen it), owing to its length or width dimensions are bigger, and wall thickness is relatively thin, therefore intensity is poor, and when die sinking, the edge of moulding is very easily adsorbed on mould, cause that moulding deforms, thus have impact on the quality of product.
Publication number is the CN102825739A(applying date is 2012.9.12) patent documentation disclose one " eject distance can continually varying injection mould ejection device ", it includes wedge block, is separately positioned on the slide rail of above-mentioned wedge block both sides, ejector retainner plate；Above-mentioned wedge block slides on slide rail；The front of above-mentioned ejector retainner plate is fixed with thimble, and above-mentioned thimble is arranged with thimble return spring；The reverse side of above-mentioned ejector retainner plate is formed with inclined-plane, and inclined-plane contacts with wedge block, and along wedge block relative sliding.In this liftout attachment, contacted by face between ejector retainner plate with wedge block and produce relative sliding, if but if the maximum static friction force between ejector retainner plate and wedge block contact surface is excessive, so wedge block and ejector retainner plate are in return process, easily block, for being additionally arranged the scheme of return spring, if the tension force of return spring is not enough, wedge block and ejector retainner plate also are difficult to self-return.
Summary of the invention
For situation in return comparatively difficulty of the wedge block in existing injection mould ejection device and ejector retainner plate, the invention provides one and eject and return process injection mould ejection device more smoothly.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
A kind of injection mould ejection device of bumper, including wedge block and be positioned at the ejector retainner plate on front side of wedge block inclined-plane, described wedge block be connected with for wedge block slide slide rail, the some thimbles being arranged over for ejecting injection mold of described ejector retainner plate, this thimble outer sheath is provided with thimble return spring, described ejector retainner plate is provided with the roller that roll relative to wedge block inclined-plane, and wedge block inclined-plane is provided with the groove or jut that coordinate with roller.
Adopt the injection mould ejection device of technique scheme, owing to having made the sliding friction between wedge block and ejector retainner plate into rolling friction, therefore between wedge block and ejector retainner plate, motion is more smoothly mutually, it is possible to avoid liftout attachment ejecting the situation relatively elaborate with in return process.
Limiting further, described ejector retainner plate is provided with the reverse lozenges mated with wedge block inclined-plane, and described pulley is installed on reverse lozenges.Above-mentioned restriction makes can install between ejector retainner plate and wedge block inclined-plane more pulley, can only be distributed on line relative to pulley, and on face, multiple pulleys of distribution can improve the stability of liftout attachment work.
For the further restriction of such scheme, described pulley is the assembly pulley that at least two single-sheaved block is constituted.Select pulley block structure can promote the stability of rolling friction further so that above-mentioned restriction makes mutual motion between wedge block and ejector retainner plate more smooth and easy.
Limiting further, described wedge block is provided with the returning device controlling wedge block return.This restriction makes wedge block can return to initial position under the effect of returning device after the process completing to eject working of plastics.
Preferred returning device can be the return structure of recited patent documentation in background technology, it is also possible to being the returning device including following a few part, particularly as follows: location-plate, it is positioned on front side of wedge block and is fixed on slide rail；Return chute, it is opened in bottom wedge block, and return chute opening is towards location-plate；Slide block return spring, connected positioning plate is fixed in its one end, and the other end is embedded in return chute, and is fixed on bottom return chute.Liftout attachment as described in the background art, its returning device is to be directly connected to slide block return spring between the tip of wedge block and fixing plate (being equivalent to the location-plate of the application), it there is problems of slide block return spring and is fully exposed, add the easy unbalance stress of top shoe return spring, deformation direction is wayward, it is difficult to ensure that slide block return spring can be always maintained at the flexible of a direction in compression process, in general, it is all to be enclosed within intermediate bar outside slide block return spring, facilitates the direction that guide shoe return spring is flexible；And the trouble that intermediate bar is installed has been cast out in this restriction, but a sufficiently long slide block return chute is set bottom wedge block, slide block return spring major part is limited in slide block return chute, such slide block return spring is not easy the situation that telescopic direction changes occur in telescopic process, so after ejection process completes, wedge block returns to initial position under the effect of slide block return spring, wait next time eject operation.
Limiting further, described slide block return spring has at least two.Arranging multiple slide block return spring and can ensure that wedge block is subject to multiple active force in return process, not only increase the return smoothness of liftout attachment, the return process also making wedge block is more steady.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention one structural representations.
The A place part that Fig. 2 is Fig. 1 cuts open enlarged drawing.
Fig. 3 is embodiments of the invention two structural representations.
The B place part that Fig. 4 is Fig. 3 cuts open enlarged drawing.
Detailed description of the invention
In order to make those skilled in the art can be more fully understood that the present invention, below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated.
Embodiment 1: as shown in Figure 1 and Figure 2, a kind of injection mould ejection device of bumper, including wedge block 1 and be positioned at the ejector retainner plate 3 on front side of wedge block inclined-plane 11, wedge block 1 be connected with for wedge block 1 slide slide rail 2, ejector retainner plate 3 be arranged over some thimbles 5 for ejecting bumper plastic part, be cased with thimble return spring 5 outside this thimble 5；Owing to rolling friction is more more smoothly than sliding friction effect, therefore the roller 31 that roll relative to wedge block inclined-plane 11 be set on ejector retainner plate 3, wedge block inclined-plane 11 is provided with groove 12(referring to Fig. 4), roller 31 can be rolled in groove 12, certain groove 12 can also be replaced with jut, and such roller 31 is distributed in jut both sides.
For making wedge block 1 can return to initial position after the process completing to eject working of plastics, it is possible to arrange one and can control wedge block 1 and eject the returning device of return.Concrete structure is as shown in Figure 2: this returning device includes location-plate 6, and it is positioned on front side of wedge block 1 and is fixed on slide rail 2；Return chute 13, it is opened in bottom wedge block 1, and return chute 13 opening is towards location-plate 6；Slide block return spring 13, connected positioning plate 6 is fixed in its one end, and the other end is embedded in return chute 13, and is fixed on bottom return chute 13.Owing to slide block return spring 13 major part is limited in return chute 13, slide block return spring 13 is difficult to situation about changing in telescopic direction in telescopic process, so after ejection process completes, wedge block 1 returns to initial position under the effect of slide block return spring 13, wait next time eject operation.
Slide block return spring 13 is symmetrically arranged with two.Arranging multiple slide block return spring 13 and can ensure that wedge block 1 is subject to multiple active force in return process, not only increase the return smoothness of liftout attachment, the return process also making wedge block 1 is more steady.
Embodiment 2:
As shown in Figure 3, Figure 4, this embodiment is in that from the different of embodiment 1, ejector retainner plate 3 is provided with the reverse lozenges 32 mated with wedge block inclined-plane 11, and described pulley 31 is installed on reverse lozenges 32, and so reverse lozenges 32 can arrange more pulley 31.For promoting the stability of rolling friction further, pulley 31 is specially the assembly pulley that multiple single-sheaved block is constituted, and it can make between wedge block 1 and ejector retainner plate 3, and motion is more smooth and easy mutually.
Above the injection mould ejection device of bumper provided by the invention is described in detail.The explanation of specific embodiment is only intended to help to understand method and the core concept thereof of the present invention.It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to the present invention carries out some improvement and modification, these improve and modify in the protection domain also falling into the claims in the present invention.
Claims (6)
1. the injection mould ejection device of a bumper, including wedge block and be positioned at the ejector retainner plate on front side of wedge block inclined-plane, described wedge block be connected with for wedge block slide slide rail, the some thimbles being arranged over for ejecting injection mold of described ejector retainner plate, this thimble outer sheath is provided with thimble return spring, it is characterized in that, described ejector retainner plate is provided with the roller that roll relative to wedge block inclined-plane, and wedge block inclined-plane is provided with the groove or jut that coordinate with roller.
2. injection mould ejection device according to claim 1, it is characterised in that described ejector retainner plate is provided with the reverse lozenges mated with wedge block inclined-plane, described pulley is installed on this reverse lozenges.
3. injection mould ejection device according to claim 2, it is characterised in that described pulley is the assembly pulley that at least two single-sheaved block is constituted.
4. the injection mould ejection device according to any one of claim 1-3, it is characterised in that described wedge block is provided with control wedge block and ejects the returning device of return.
5. injection mould ejection device according to claim 4, it is characterised in that described returning device includes: location-plate, it is positioned on front side of wedge block and is fixed on slide rail；Return chute, it is opened in bottom wedge block, and return chute opening is towards location-plate；Slide block return spring, connected positioning plate is fixed in its one end, and the other end is embedded in return chute, and is fixed on bottom return chute.
6. injection mould ejection device according to claim 5, it is characterised in that described slide block return spring has at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410815710.XA CN105773933A (en) | 2014-12-25 | 2014-12-25 | Injection mold ejection device for automobile bumpers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410815710.XA CN105773933A (en) | 2014-12-25 | 2014-12-25 | Injection mold ejection device for automobile bumpers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105773933A true CN105773933A (en) | 2016-07-20 |
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ID=56378230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410815710.XA Pending CN105773933A (en) | 2014-12-25 | 2014-12-25 | Injection mold ejection device for automobile bumpers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105773933A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317577A (en) * | 2018-10-09 | 2019-02-12 | 成都双流华成垫片厂 | A kind of stamping die material drag device and application method |
| CN110000912A (en) * | 2019-04-23 | 2019-07-12 | 上海艾郎风电科技发展（集团）有限公司 | I-shaped web stripper apparatus |
-
2014
- 2014-12-25 CN CN201410815710.XA patent/CN105773933A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109317577A (en) * | 2018-10-09 | 2019-02-12 | 成都双流华成垫片厂 | A kind of stamping die material drag device and application method |
| CN109317577B (en) * | 2018-10-09 | 2021-04-06 | 成都双流华成垫片厂 | Material dragging device of stamping die and using method |
| CN110000912A (en) * | 2019-04-23 | 2019-07-12 | 上海艾郎风电科技发展（集团）有限公司 | I-shaped web stripper apparatus |
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| C06 | Publication | ||
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Application publication date: 20160720 |