CN101875219A - Angle pin ejection mechanism and injection molding mould - Google Patents
Angle pin ejection mechanism and injection molding mould Download PDFInfo
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- CN101875219A CN101875219A CN2009101388418A CN200910138841A CN101875219A CN 101875219 A CN101875219 A CN 101875219A CN 2009101388418 A CN2009101388418 A CN 2009101388418A CN 200910138841 A CN200910138841 A CN 200910138841A CN 101875219 A CN101875219 A CN 101875219A
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- taper pin
- spacing member
- pull bar
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Abstract
The invention discloses an angle pin ejection mechanism and an injection molding mould. The angle pin ejection mechanism comprises a spacing construction member, an angle pin and an angle pin draw bar, wherein the spacing construction member is provided with a spacing part; on end of the angle pin is connected to the spacing part with operability so as to move in a limited mode relative to the spacing construction member, and the angle pin draw bar is connected to the spacing construction member.
Description
Technical field
The invention relates to a kind of ejection shaping die, particularly about a kind of angle pin ejection mechanism and ejection shaping die.
Background technology
Along with modern science and technology is constantly progressive, various daily necessitiess are also constantly weeded out the old and bring forth the new.Especially consumption electronic products, its spare part is made by mould Machining Technology such as (mold) mostly.And to finish this spare part processing technology, at first must provide the mould of desiring to cast out this product.But this mould will include fixed die and dynamic model at least.Wherein after but fixed die and dynamic model carry out matched moulds, can constitute die cavity jointly, and then can utilize and water the injection molding material and produce finished product.When desire with this finished product when but fixed die or dynamic model carry out the program of the demoulding, must utilize mould emptier to pass this finished product usually.This mould emptier is generally an angle pin ejection mechanism, but makes finished product to separate from fixed die or dynamic model.
See also Figure 1A and Figure 1B.Figure 1A is depicted as the three-dimensional combination figure of the angle pin ejection mechanism 10 of known applications in ejection shaping die 1.Figure 1B is depicted as the three-dimensional exploded view of the angle pin ejection mechanism 10 among Figure 1A.Shown in Figure 1A and Figure 1B, known angle pin ejection mechanism 10 consists predominantly of taper pin 100 and taper pin pull bar 102.In particular, have chute 1000 on the taper pin 100, and have the slide construction 1020 of cooperation on the taper pin pull bar 102 in the chute 1000 of taper pin 100, to slide.Thus, after the slide construction 1020 of taper pin pull bar 102 snaps in the chute 1000 of taper pin 100, can utilize taper pin pull bar 102 to drive taper pin 100 on perpendicular to the glide direction of slide construction 1020 relative chutes 1000 and carry out push-and-pull.
See also Fig. 2.Figure 2 shows that the cross section view of the ejection shaping die 1 of using the angle pin ejection mechanism 10 among Figure 1A.As shown in Figure 2, consist predominantly of fixation side fixed head 12, caster 14, mother module core 16, male model plate 18, male model benevolence 20, liftout plate combination 22 and movable side fixed head 24 in the ejection shaping die 1.Ejection shaping die 1 is arranged on the load bearing seat (not being shown among the figure) of casting machine usually.Angle pin ejection mechanism 10 among Figure 1A is arranged in the ejection shaping die 1 usually, in order to jet shaping finished product is broken away from ejection shaping die 1.Wherein, male model benevolence 20 has taper pin hole 200, and this taper pin hole 200 is oblique in the center line C1 of ejection shaping die 1.In addition, male model plate 18 is disposed at male model benevolence 20 belows, and male model plate 18 have pass male model plate 18 eject through hole 180.This ejects through hole 180 and engages with taper pin hole 200 on the male model benevolence 20.And liftout plate combination 22 is arranged at the below of male model plate 18.Liftout plate combination 22 comprises and ejects taper pin location-plate 220 and eject taper pin fixed head 222, and can move back and forth by relative male model plate 18 along the center line C1 of ejection shaping die 1.
Be shown in equally among Fig. 2, what the taper pin 100 of known angle pin ejection mechanism 10 passed male model plate 18 ejects through hole 180, and then makes an end of taper pin 100 be arranged in the taper pin hole 200 of male model benevolence 20.In addition, an end setting of taper pin pull bar 102 and be fixed in the liftout plate combination 22 (that is, be subjected to ejecting taper pin location-plate 220 and eject 222 clampings of taper pin fixed head).In order to make the location between angle pin ejection mechanism 10 and the ejection shaping die 1 accurate, the aperture that ejects through hole 180 must accurately cooperate with the aperture in taper pin hole 200.Thus, taper pin 100 is contained in and ejects through hole 180 and just can not produce loosening with this end in the taper pin hole 200.
In the step of operation angle pin ejection mechanism 10, the 22 center line C1 along ejection shaping die 1 move towards male model plate 18 with the liftout plate combination.At this moment, taper pin pull bar 102 also can push towards male model plate 18 along the center line C1 of ejection shaping die 1, and then utilizes slide construction 1020 relative chutes 1000 to slide and drive taper pin 100 and obliquely slide in ejecting through hole 180 and taper pin hole 200.Thus, this end of taper pin 100 can pass male model benevolence 20 taper pin hole 200 and with the jet shaping finished product success demoulding.
Yet, it should be noted that when the taper pin pull bar 102 of angle pin ejection mechanism 10 along the center line C1 of ejection shaping die 1 during towards 18 pushings of male model plate, taper pin 100 can be subjected to cross force and longitudinal force simultaneously.Usually the length of taper pin 100 is long, and therefore after through repeated use repeatedly, taper pin 100 can be very easy to produce diastrophic phenomenon.In addition, because the diastrophic phenomenon of taper pin 100 takes place, will make that the location of angle pin ejection mechanism 10 in ejection shaping die 1 is not accurate, and then influence the accuracy to size of jet shaping finished product.In addition, run into and to dismantle maintenance, take in angle pin ejection mechanism 10, when perhaps changing waiting time because of desire after angle pin ejection mechanism 10 flexural deformations, male model benevolence 20, male model plate 18 and the liftout plate combination 22 of ejection shaping die 1 must be disassembled in order, just the taper pin 100 of angle pin ejection mechanism 10 intactly can be shifted out with taper pin pull bar 102.The process of this dismounting might make ejection shaping die 1 and angle pin ejection mechanism 10 impaired, and the service life of reduction ejection shaping die 1 and angle pin ejection mechanism 10.
Summary of the invention
A category of the present invention is to provide a kind of angle pin ejection mechanism.Angle pin ejection mechanism comprises spacing member, taper pin and taper pin pull bar.Spacing member has limiting section.Taper pin one end operability is connected to limiting section, but and then the relative limit member move limitedly.The taper pin pull bar is connected in spacing member.
Another category of the present invention is to provide a kind of ejection shaping die.Ejection shaping die consists predominantly of male die seat and angle pin ejection mechanism.Male die seat includes male model plate, male model benevolence and liftout plate combination.Angle pin ejection mechanism is arranged in the male die seat.Angle pin ejection mechanism includes spacing member, taper pin and taper pin pull bar.Spacing member can slide in the male model plate, and is subject between male model plate and the male model benevolence.Spacing member has limiting section.Taper pin is arranged between male model plate and the male model benevolence.One end operability of taper pin is connected to limiting section, but and then the relative limit member move limitedly.The taper pin pull bar is arranged between liftout plate combination and the male model plate, and is connected in spacing member.Thus, when the taper pin pull bar separated with spacing member, spacing member and taper pin can utilize and make male model benevolence separate with the male model plate and take out from male die seat.
Compared to known technology, angle pin ejection mechanism of the present invention and ejection shaping die mainly are to design at improvement and the reinforcement on the mechanism performance that angle pin ejection mechanism carries out on the physical dimension, make in ejection shaping die reciprocating angle pin ejection mechanism can reduce the friction between the spare part, and then reduce the wearing and tearing of spare part and increase service life.In addition, the present invention also further improves at the dismounting technology of angle pin ejection mechanism, makes that the installation and removal formality of angle pin ejection mechanism is simple, can reduce the wearing and tearing of spare part equally.Thus, the present invention can dwindle the size of angle pin ejection mechanism effectively, and then reduces the design restriction of technical staff when carrying out jet shaping finished product significantly.
Can utilize the following detailed description and accompanying drawings to be further understood about the advantages and spirit of the present invention.
Description of drawings
Figure 1A is depicted as the three-dimensional combination figure of the angle pin ejection mechanism of known applications in ejection shaping die.
Figure 1B is depicted as the three-dimensional exploded view of the angle pin ejection mechanism among Figure 1A.
Figure 2 shows that the cross section view of the ejection shaping die of using the angle pin ejection mechanism among Figure 1A.
Fig. 3 A is depicted as the three-dimensional combination figure according to the angle pin ejection mechanism of a specific embodiment of the present invention.
Fig. 3 B is depicted as the three-dimensional exploded view of the angle pin ejection mechanism among Fig. 3 A.
Figure 4 shows that the cross section view of the ejection shaping die of the angle pin ejection mechanism among the application drawing 3A.
The specific embodiment
The invention provides a kind of angle pin ejection mechanism and ejection shaping die.And more particularly, it mainly is to design at improvement and the reinforcement on the mechanism performance that angle pin ejection mechanism carries out on the physical dimension, make in ejection shaping die reciprocating angle pin ejection mechanism can reduce the friction between the spare part, and then reduce the wearing and tearing of spare part and increase service life.Below in detail preferred embodiment of the present invention will be described in detail, in order to the simplicity in abundant explanation feature of the present invention, spirit, advantage and the enforcement.
See also Fig. 3 A and Fig. 3 B.Fig. 3 A is depicted as the three-dimensional combination figure according to the angle pin ejection mechanism 30 of a specific embodiment of the present invention.Fig. 3 B is depicted as the three-dimensional exploded view of the angle pin ejection mechanism 30 among Fig. 3 A.Shown in Fig. 3 A and Fig. 3 B, angle pin ejection mechanism 30 of the present invention can be implemented on the general common ejection shaping die 3.For instance, kind of all kinds on the market is applied to the ejection shaping die of in-mold transfer printing at present, all can adopt angle pin ejection mechanism 30 of the present invention to reduce the wearing and tearing of spare part easily and increase service life.Ejection shaping die 3 of the present invention consists predominantly of spacing member 302, taper pin 300 and taper pin pull bar 304.Below will make more deep introduction and more detailed description, and comprise structure and its function at each position in it and make flowing mode at the ejection shaping die 3 of this specific embodiment of the present invention.
Shown in Fig. 3 A and Fig. 3 B, angle pin ejection mechanism 30 of the present invention includes spacing member 302 more especially except taper pin 300 and taper pin pull bar 304.In particular, spacing member 302 has limiting section.One end operability of taper pin 300 is connected to limiting section, but and then relative limit member 302 move limitedly.Taper pin pull bar 304 is connected in spacing member 302.
In a specific embodiment, the limiting section on the spacing member 302 can be made into the form of chute 3020, and this end of taper pin 300 can have the slide construction 3000 that cooperates chute 3020 shapes on the spacing member 302, but and then relative limit member 302 slide.Thus, after the slide construction 3000 of taper pin 300 snaps in the chute 3020 of taper pin pull bar 304, can utilize taper pin pull bar 304 to carry out push-and-pull driving taper pin 300 on respect to the glide direction of chute 3020 perpendicular to slide construction 3000.
What this will specify be, compared to known angle pin ejection mechanism 10, it slides in the chute 1000 of taper pin 100 with the slide construction on the taper pin pull bar 102 1020, and angle pin ejection mechanism of the present invention 30 slides in the chute 3020 of spacing member 302 with the slide construction on the taper pin 300 3000.In the experience of using known angle pin ejection mechanism 10, tend to find, after reusing repeatedly, produce the badly damaged position and always appear in the chute 1000 of taper pin 100, making usually must be with the taper pin 300 of whole ejection shaping mould dismounting more to renew.Therefore, angle pin ejection mechanism 30 of the present invention is arranged at slide construction 3000 on the taper pin 300 on the contrary, and chute 3020 is arranged on the spacing member 302.Thus, taper pin 300 can dwindle effectively in order to the contact area at the position (that is slide construction 3000) of sliding, and then reduce the probability that angle pin ejection mechanism 30 damages significantly and increase the service life, also exempted and changed the loaded down with trivial details formality that damages spare part.
See also Fig. 3 A, Fig. 3 B and Fig. 4.Figure 4 shows that the cross section view of the ejection shaping die 3 of the angle pin ejection mechanism 30 among the application drawing 3A.As shown in Figure 4, consist predominantly of fixation side fixed head 32, female die seat, male die seat and movable side fixed head 44 in the ejection shaping die 3.Female die seat includes caster 34 and mother module core 36.Male die seat includes male model plate 38, male model benevolence 40 and liftout plate combination 42.Male model benevolence 40 is arranged on the male model plate 38.Ejection shaping die 3 is arranged on the load bearing seat (not being shown among the figure) of casting machine usually.
Angle pin ejection mechanism 30 among Fig. 3 A is arranged in the ejection shaping die 3 usually, in order to jet shaping finished product is broken away from (more accurately, jet shaping finished product is between male model benevolence 40 and mother module core 36) in ejection shaping die 3.Wherein, male model benevolence 40 of the present invention has taper pin hole 400, and this taper pin hole 400 is oblique in the center line C2 of ejection shaping die 3.In addition, male model plate 38 is disposed at male model benevolence 40 belows, and male model plate 38 have pass male model plate 38 eject through hole 380.This ejects through hole 380 and engages with taper pin hole 400 on the male model benevolence 40.And liftout plate combination 42 is arranged at the below of male model plate 38.Liftout plate combination 42 comprises and ejects taper pin location-plate 420 and eject taper pin fixed head 422, and can move back and forth by relative male model plate 38 along the center line C2 of ejection shaping die 3.
Be shown in equally among Fig. 4, spacing member 302 of the present invention can slide in male model plate 38, and is subject between male model plate 38 and the male model benevolence 40.Furthermore, spacing member 302 only can slide in the sliding rail 39 that is arranged between male model plate 38 and the male model benevolence 40 limitedly.The taper pin 300 of angle pin ejection mechanism 30 of the present invention can pass the taper pin hole 400 of male model benevolence 40 and be subject to male model plate 38 and male model benevolence 40 between sliding rail 39, and then make an end of taper pin 300 can pass the taper pin hole 400 of male model benevolence 40 and move back and forth.In addition, taper pin pull bar 304 of the present invention is arranged between liftout plate combination 42 and the male model plate 38, and one end setting and be fixed in liftout plate and make up in 42.Wherein, liftout plate combination 42 is advanced one one and is included and eject taper pin location-plate 420 and eject taper pin fixed head 422.Taper pin pull bar 304 wears and ejects taper pin location-plate 420.Eject taper pin fixed head 422 and can be used to prop up taper pin pull bar 304, so restriction taper pin pull bar 304 with eject taper pin location-plate 420 and relatively move.In other words, an end of taper pin pull bar 304 is held on and ejects taper pin location-plate 420 and eject between the taper pin fixed head 422, as shown in Figure 4.In order to make the location between angle pin ejection mechanism 30 and the ejection shaping die 3 accurate, the aperture that ejects through hole 380 must accurately cooperate with the aperture in taper pin hole 400.Thus, taper pin 300 is contained in and ejects through hole 380 and just can not produce loosening with this end in the taper pin hole 400.
In the step of operation angle pin ejection mechanism 30, the 42 center line C2 along ejection shaping die 3 move towards male model plate 38 with the liftout plate combination.At this moment, taper pin pull bar 304 also can push towards male model plate 38 along the center line C2 of ejection shaping die 3, and then utilize the chute 3020 of the slide construction 3000 relative spacing members 302 that are connected with taper pin pull bar 304 of taper pin 100 to slide, slide along sliding rail 39 and drive spacing member 302, and make taper pin 300 in taper pin hole 400, obliquely slide.Thus, this end of taper pin 300 can pass male model benevolence 40 taper pin hole 400 and with the jet shaping finished product success demoulding.
Must almost whole ejection shaping die 1 all be disassembled when taking out angle pin ejection mechanism 10 in the known ejection shaping die 1 compared to desiring, when angle pin ejection mechanism 30 of the present invention takes out from ejection shaping die 3 as if desire, as long as just male model benevolence 40 separate with male model plate 38 and with male model benevolence 40 by taking out in the ejection shaping die 3, and taper pin pull bar 304 is separated with spacing member 302, spacing member 302 can be taken out simultaneously with taper pin 300, and whole ejection shaping die 3 all need not be disassembled.In other words, male die seat needn't be taken apart fully, and taper pin pull bar 304 can be kept somewhere between liftout plate combination 42 and male model plate 38, and except saving the space, in the time of more can avoiding mold attaching/detaching, spare and accessory parts are impaired because of dismounting.
In a specific embodiment, can have screw hole 3022 on the spacing member 302, and an end of taper pin pull bar 304 can have the screw 3040 of cooperation to secure to screw hole 3022, in order to be connected in spacing member 302.Certainly, also screw can be arranged on this end of taper pin pull bar 304, and relatively on spacing member 302, be set to screw hole, but not as limit.Technical staff in this field, the restriction in specific demand in the time of all can be or the design and flexibly select for use various syndeton that taper pin pull bar 304 is connected in spacing member 302 according to practical application.
In addition, in a specific embodiment, above-mentioned taper pin pull bar 304 can utilize integrated mode with screw 3040 and make.
In sum, in a specific embodiment, taper pin pull bar 304 is held on the other end that ejects taper pin location-plate 420 and eject between the taper pin fixed head 422 can have hexagonal counter sink (not being shown among the figure), uses for hexagon socket head cap screw bottle opener engaging (not being shown among the figure).And the hexagon socket head cap screw bottle opener can pass and eject taper pin fixed head 422 and engage with the hexagonal counter sink, but not as limit.Technical staff in this field, the restriction in specific demand in the time of all can be or the design and flexibly select for use various snap-in structure combination to engage with an end of taper pin pull bar 304 according to practical application.Thus, utilize and rotate the hexagon socket head cap screw bottle opener, can drive taper pin pull bar 304 relative limit members 302 and rotate and be separated from each other.At this moment, taper pin pull bar 304 still is held on and ejects taper pin location-plate 420 and eject between the taper pin fixed head 422, but taper pin 300 and spacing member 302 can be with male model benevolence 40 after separatings and then taking out from the male model plate 38.
By above detailed description for preferred embodiment of the present invention, can find out significantly, angle pin ejection mechanism of the present invention and ejection shaping die mainly are to design at improvement and the reinforcement on the mechanism performance that angle pin ejection mechanism carries out on the physical dimension, make in ejection shaping die reciprocating angle pin ejection mechanism can reduce the friction between the spare part, and then reduce the wearing and tearing of spare part and increase service life.In addition, the present invention also further improves at the dismounting technology of angle pin ejection mechanism, makes that the installation and removal formality of angle pin ejection mechanism is simple, can reduce the wearing and tearing of spare part equally.Thus, the present invention can dwindle the size of angle pin ejection mechanism effectively, and then reduces the design restriction of technical staff when carrying out jet shaping finished product significantly.
Utilize the above detailed description of preferred embodiments, hope can be known description feature of the present invention and spirit more, and is not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claims of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (11)
1. an angle pin ejection mechanism is characterized in that, comprises:
Spacing member has limiting section;
Taper pin, one end operability is connected to described limiting section, and then can move limitedly relative to described spacing member; And
The taper pin pull bar is connected in described spacing member.
2. angle pin ejection mechanism according to claim 1 is characterized in that, described limiting section is a chute, and a described end of described taper pin has the slide construction that cooperates described chute shape, and then can slide by described relatively spacing member.
3. angle pin ejection mechanism according to claim 1 is characterized in that, described spacing member has screw hole, and an end of described taper pin pull bar has cooperation to secure to the screw of described screw hole, in order to be connected in described spacing member.
4. angle pin ejection mechanism according to claim 3 is characterized in that, described taper pin pull bar and described screw are one-body molded.
5. angle pin ejection mechanism according to claim 3 is characterized in that the other end of described taper pin pull bar has the hexagonal counter sink, uses for the hexagon socket head cap screw bottle opener to engage.
6. an ejection shaping die is characterized in that, comprises:
Male die seat comprises:
The male model plate;
Male model benevolence is arranged on the described male model plate; And
The liftout plate combination; And
Angle pin ejection mechanism is arranged in the described male die seat, and described angle pin ejection mechanism comprises:
Spacing member can slide in described male model plate, and is subject between described male model plate and the described male model benevolence, and wherein said spacing member has limiting section;
Taper pin is arranged between described male model plate and the described male model benevolence, and an end operability of described taper pin is connected to described limiting section, and then can move limitedly relative to described spacing member; And
The taper pin pull bar is arranged between described liftout plate combination and the described male model plate, and is connected in described spacing member;
Wherein when described taper pin pull bar separates with described spacing member, described spacing member and described taper pin can utilize and make described male model benevolence separate with described male model plate and take out from described male die seat.
7. ejection shaping die according to claim 6 is characterized in that, described limiting section is a chute, and a described end of described taper pin has the slide construction that cooperates described chute shape, and then can slide by described relatively spacing member.
8. ejection shaping die according to claim 6 is characterized in that, described spacing member has screw hole, and an end of described taper pin pull bar has cooperation to secure to the screw of described screw hole, in order to be connected in described spacing member.
9. ejection shaping die according to claim 8 is characterized in that, described taper pin pull bar and described screw are one-body molded.
10. ejection shaping die according to claim 8 is characterized in that the other end of described taper pin pull bar has the hexagonal counter sink, uses for the hexagon socket head cap screw bottle opener to engage.
11. ejection shaping die according to claim 10 is characterized in that, described liftout plate is combined into one one and comprises:
Eject the taper pin location-plate, described taper pin pull bar wears the described taper pin location-plate that ejects; And
Eject the taper pin fixed head, in order to propping up described taper pin pull bar, and then limit described taper pin pull bar and the described taper pin location-plate that ejects relatively moves;
Wherein said hexagon socket head cap screw bottle opener can pass and describedly eject the taper pin fixed head and engage with described hexagonal counter sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101388418A CN101875219A (en) | 2009-04-30 | 2009-04-30 | Angle pin ejection mechanism and injection molding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101388418A CN101875219A (en) | 2009-04-30 | 2009-04-30 | Angle pin ejection mechanism and injection molding mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101875219A true CN101875219A (en) | 2010-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101388418A Pending CN101875219A (en) | 2009-04-30 | 2009-04-30 | Angle pin ejection mechanism and injection molding mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101875219A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785314A (en) * | 2012-08-16 | 2012-11-21 | 昆山名威精密工业有限公司 | Quick-change angle pin pull rod component |
| CN103171062A (en) * | 2011-12-21 | 2013-06-26 | 苏州汉扬精密电子有限公司 | Angle pin mechanism |
| CN104608343A (en) * | 2015-01-21 | 2015-05-13 | 常州市武进升越模塑有限公司 | Large angle ejection mechanism for injection molding |
| CN109849279A (en) * | 2019-04-19 | 2019-06-07 | 重庆市璧山区佳元精密模具厂(普通合伙) | The key cap mould of ejection device three times |
-
2009
- 2009-04-30 CN CN2009101388418A patent/CN101875219A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171062A (en) * | 2011-12-21 | 2013-06-26 | 苏州汉扬精密电子有限公司 | Angle pin mechanism |
| CN103171062B (en) * | 2011-12-21 | 2016-01-27 | 苏州汉扬精密电子有限公司 | Slanting pin mechanism |
| CN102785314A (en) * | 2012-08-16 | 2012-11-21 | 昆山名威精密工业有限公司 | Quick-change angle pin pull rod component |
| CN102785314B (en) * | 2012-08-16 | 2014-06-25 | 昆山名威精密工业有限公司 | Quick-change angle pin pull rod component |
| CN104608343A (en) * | 2015-01-21 | 2015-05-13 | 常州市武进升越模塑有限公司 | Large angle ejection mechanism for injection molding |
| CN109849279A (en) * | 2019-04-19 | 2019-06-07 | 重庆市璧山区佳元精密模具厂(普通合伙) | The key cap mould of ejection device three times |
| CN109849279B (en) * | 2019-04-19 | 2023-08-08 | 重庆佳鑫精密模具有限公司 | Key cap mould of three ejecting drawing of patterns |
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Application publication date: 20101103 |