CN101913231B - Fixed die core-pulling mechanism capable of self-locking and backstopping - Google Patents
Fixed die core-pulling mechanism capable of self-locking and backstopping Download PDFInfo
- Publication number
- CN101913231B CN101913231B CN 201010269043 CN201010269043A CN101913231B CN 101913231 B CN101913231 B CN 101913231B CN 201010269043 CN201010269043 CN 201010269043 CN 201010269043 A CN201010269043 A CN 201010269043A CN 101913231 B CN101913231 B CN 101913231B
- Authority
- CN
- China
- Prior art keywords
- angle
- tiltedly
- supporting base
- core
- wedge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a fixed die core-pulling mechanism capable of self-locking and backstopping, which comprises a wedge-shaped sliding block (1), an oblique ejection rod (2), an oblique core-pulling block (3), an oil cylinder (4) and a support seat (5). By using the technical scheme that the oblique core-pulling block is connected with the wedge-shaped sliding block through the oblique ejection rod by using the frictional self-locking principle, and the oil cylinder is arranged obliquely so that the stressed included angle between the wedge-shaped sliding block and the oblique ejection rod is smaller than a frictional self-locking angle of the material, the mechanism overcomes the defects of unreliable work of a die, easy fault occurrence and instable product quality because the oblique core-pulling block retreats. In the fixed die core-pulling mechanism capable of self-locking and backstopping, the retreat of the oblique core-pulling block is prevented by the self-locking and backstopping effect of the wedge-shaped sliding block, and core pulling and resetting of the oblique core-pulling block with great retraction force are driven by the small-specification oil cylinder so that the injection molding die fulfills the purposes of reducing cost, obtaining reliable work, eliminating fault hidden dangers, stabilizing product quality and ensuring product quality consistency.
Description
Technical field
The present invention relates to the core-pulling mechanism of injection mold, specifically refer to be applied in the cover half of injection mold, be used for before the mould die sinking, will being arranged on a kind of cover half core-pulling mechanism that can the self-locking retaining that the piece of tiltedly loosing core at cover half die cavity place is extracted out from injection-molded item.
Background technology
Because the needs on the function, the internal structure of some injection-molded item exists can not be along the architectural feature of mould die sinking direction demoulding from the cover half die cavity, therefore need in the cover half of injection mold, core-pulling mechanism be set, for example, the back side of wall-hanging air conditioner base is provided with water falling groove, be a structure that side is recessed along mould die sinking direction, therefore need in the cover half of mould, core-pulling mechanism be set.
Prior art is consulted Fig. 4, takes to arrange at the solid plate back side confession tiltedly sliding plagioclase groove 03 of loosing core of piece of tiltedly loosing core, and the piece of tiltedly loosing core is connected by T-shaped rail with the slide block of horizontal movement, by the oblique turnover campaign of loosing core of hydraulic oil cylinder driving slide block do; During the mould mold-closing injection, stoped because of powerful injection force effect by the thrust of oil cylinder to force retreating of the piece of tiltedly loosing core; Because hydraulic oil has compressed characteristic under pressure, therefore the piece of tiltedly loosing core can produce a small amount of movement that retreats when mold work, its consequence is to produce drop step or overlap on the surface of injection-molded item, causes quality of item to be difficult to control, difficult quality stable and consistent.In addition, because will be at the confession that solid plate the arranges up/down perforation tiltedly sliding plagioclase groove 03 of loosing core of piece of tiltedly loosing core, so that the bulk strength of solid plate descends, and plagioclase groove 03 processing difficulties, precision is difficult to guarantee; These composite factors have caused mold work unreliable, easily the generation faults such as the stuck or solid plate cracking of piece of tiltedly loosing core.Therefore, prior art exist mold work unreliable, easily send out fault, the unsettled problems and shortcomings of quality of item.
Summary of the invention
Problems and shortcomings for above-mentioned prior art existence, the present invention utilizes friction self-locking angle principle, the piece of will tiltedly loosing core is connected with wedge block by angle ejector rod, oil cylinder is tilted to install, make angle stressed between wedge block and the angle ejector rod less than the technical scheme at the friction self-locking angle of material, a kind of cover half core-pulling mechanism that can the self-locking retaining is provided, be intended to stop retreating of the piece of tiltedly loosing core by the self-locking retaining effect of wedge block, and can select oil cylinder than small dimension to affect the loosing core and reset of the piece of tiltedly loosing core of larger retraction force, make injection mold reach the reduction cost, reliable operation, eliminate potential faults, the stable article quality, guarantee the conforming purpose of product property.
The object of the present invention is achieved like this: a kind of cover half core-pulling mechanism that can the self-locking retaining, comprise wedge block, angle ejector rod, tiltedly loose core piece, oil cylinder, supporting base, wherein: described wedge block is along long side direction, biend presss from both sides the wedge shape of α angle up and down, microcephaly's one end side surface of wedge shape is the plane with the lower surface quadrature, the large first end side surface of wedge shape is and the plane of upper surface quadrature that two long side faces are and up and down biend quadrature and each other plane-parallel wedge shape steel blocks; Along long side direction, being equipped with the cross section on the up and down biend of wedge block is the T shape chute of the groove formation of inverted T-shape; Described α angle span is 12 °～16 °:
Described angle ejector rod is the steel columnar block of rectangle; Be equipped with the T shape slide rail that direction is identical, the cross section is the T font, protrude on the up and down biend of angle ejector rod; T shape slide rail and described T shape chute are slidingly matched;
The described piece of tiltedly loosing core is that the lower surface is provided with the profile identical with the local profile of injection-molded item, and the upper surface is provided with T shape chute, and four sides are adjacent orthogonal, the steel columnar block on the plane of opposing parallel;
The hydraulically extensible pushing tow executive component of described oil cylinder for being consisted of by cylinder body, piston rod;
Described supporting base is that horizontal sides and hypotenuse angle are the right angled triangle steel blocks of γ; The horizontal sides face of supporting base, vertical edges face and two side faces are the plane; The inclined edge surfaces of supporting base is provided with T shape slide rail; The γ angle that the horizontal sides of supporting base and hypotenuse are folded is called the γ angle of supporting base.
Mutual alignment and annexation
From bottom to top tiltedly loose core piece, angle ejector rod, wedge block, supporting base links to each other through separately T shape slide rail or T shape chute successively, and from bottom to top place successively cavity block, solid plate by wedge block tiltedly take out the direction setting tiltedly take out slideway, and the horizontal sides face of supporting base is horizontally fixed in the solid plate of upper end; The cylinder body of oil cylinder is by on the oblique lateral wall that is fixed on solid plate in the γ angle of supporting base, and the piston rod of oil cylinder links to each other with the large first end side surface quadrature of wedge block wedge shape; The γ angle of supporting base also is the oblique top deflection of oil cylinder,, is determined the oblique orientation angle that installs and fixes of oil cylinder by the γ angle of supporting base that is;
If the piece 3 of tiltedly loosing core is tiltedly taken out the angle of direction and mould die sinking azimuth axis for tiltedly taking out deflection β; Tiltedly take out deflection β by the required structures shape of tiltedly taking out of injection-molded item, be known conditions, the α angle of wedge block 1 also is known conditions after selected, then, and γ=β-α.
Operation principle
During cylinder ejector, the piston rod of oil cylinder promotes wedge block along between the T shape slide rail wedging angle ejector rod and supporting base of angle ejector rod, supporting base, and the angle ejector rod piece of will tiltedly loosing core puts in place along tiltedly taking out the oblique downward ejection of slideway; During the oil cylinder retraction, the piston rod pulling wedge block of oil cylinder retreats retraction along the T shape slide rail of angle ejector rod, supporting base, and the angle ejector rod pulling is tiltedly loosed core, and slideway is oblique upwards looses core piece along tiltedly taking out.
During mold injection, powerful injection pressure forces the piece rollback of tiltedly loosing core, at this moment, wedge block between wedging angle ejector rod and the supporting base is decomposed into the direction power of tiltedly the taking out F of angle ejector rod rollback with the inclined edge surfaces of supporting base perpendicular malleation component F1 with along two component of oblique top direction component F2 of oil cylinder oblique top direction by the α angle; Malleation component F1 is applied on the solid plate through supporting base, acting on of oblique top direction component F2 produces rollback power on the wedge block, because the α angle of wedge block is less than the angle of friction of material, the frictional force that malleation component F1 produces is greater than the rollback power of wedge block, so that wedge block self-locking and transfixion, thereby guarantee tiltedly to loose core piece rollback not under huge injection pressure; In addition, because the power-saving function on inclined-plane, it is very not large to affect wedge block to drive the piece of tiltedly the loosing core required active force of loosing core, reset through angle ejector rod, therefore, selects body is little, cost is low, energy consumption is low oil cylinder just can be competent at and affects loosing core and resetting of the piece of tiltedly loosing core.
Beneficial effect
The setting of angle ejector rod only needs in cavity block, solid plate to arrange and tiltedly take out slideway by the direction of tiltedly taking out of wedge block, thereby has improved solid plate intensity, has overcome prior art and need to cut open the chest greatly to arrange the drawback that the plagioclase groove reduces solid plate intensity.
Above-mentioned, the present invention utilizes friction self-locking angle principle, the piece of will tiltedly loosing core is connected with wedge block by angle ejector rod, oil cylinder is tilted to install, make angle stressed between wedge block and the angle ejector rod less than the technical scheme at the friction self-locking angle of material, having overcome the prior art existence causes mold work unreliable because the piece of tiltedly loosing core retreats, easily send out fault, the unsettled problems and shortcomings of quality of item, a kind of cover half core-pulling mechanism that can the self-locking retaining that provides, self-locking retaining effect by wedge block stops retreating of the piece of tiltedly loosing core, and can select oil cylinder than small dimension to affect the loosing core and reset of the piece of tiltedly loosing core of larger retraction force, make injection mold reach the reduction cost, reliable operation, eliminate potential faults, the stable article quality, guarantee the conforming purpose of product property.
Description of drawings
Fig. 1 is a kind of cover half core-pulling mechanism that can the self-locking retaining of the present invention, is arranged in the structural representation of using mould;
Fig. 2 be among Fig. 1 A to the rotation partial schematic diagram;
Fig. 3 is the stressed decomposition principle figure of a kind of cover half core-pulling mechanism that can the self-locking retaining of the present invention;
Fig. 4 be prior art the cover half core-pulling mechanism, be arranged in the structural representation of mould.
Below in conjunction with the embodiment in the accompanying drawing the present invention is described in further detail, but should not be construed as any limitation of the invention.
Among the figure: wedge block 1, angle ejector rod 2, tiltedly loose core piece 3, oil cylinder 4, supporting base 5, solid plate 01, cavity block 02, plagioclase groove 03, T shape slide rail 04, T shape chute 05, injection-molded item 06, tiltedly take out direction power F, malleation component F1, oblique top direction component F2, mould die sinking azimuth axis 07.
The specific embodiment
Consult Fig. 1～Fig. 3, a kind of cover half core-pulling mechanism that can the self-locking retaining of the present invention, comprise wedge block 1, angle ejector rod 2, tiltedly loose core piece 3, oil cylinder 4, supporting base 5, wherein: described wedge block 1 is along long side direction, biend presss from both sides the wedge shape of α angle up and down, microcephaly's one end side surface of wedge shape is the plane with the lower surface quadrature, the large first end side surface of wedge shape is and the plane of upper surface quadrature that two long side faces are and up and down biend quadrature and each other plane-parallel wedge shape steel blocks; Along long side direction, being equipped with the cross section on the up and down biend of wedge block is the T shape chute 05 of the groove formation of inverted T-shape; Described α angle span is 12 °～16 °;
Described angle ejector rod 2 is the steel columnar block of rectangle; Be equipped with the T shape slide rail 04 that direction is identical, the cross section is the T font, protrude on the up and down biend of angle ejector rod; T shape slide rail 04 is slidingly matched with described T shape chute 05;
The described piece 3 of tiltedly loosing core is provided with the profile identical with the local profile of injection-molded item 06 for the lower surface, and it is adjacent orthogonal that the upper surface is provided with 05, four side of T shape chute, the steel columnar block on the plane of opposing parallel;
The hydraulically extensible pushing tow executive component of described oil cylinder 4 for being consisted of by cylinder body, piston rod;
Described supporting base 5 is that horizontal sides and hypotenuse angle are the right angled triangle steel blocks of γ; The horizontal sides face of supporting base, vertical edges face and two side faces are the plane; The inclined edge surfaces of supporting base is provided with T shape slide rail 04; The γ angle that the horizontal sides of supporting base 5 and hypotenuse are folded is called the γ angle of supporting base 5.
Mutual alignment and annexation
From bottom to top tiltedly loose core piece 3, angle ejector rod 2, wedge block 1, supporting base 5 links to each other through separately T shape slide rail 04 or T shape chute 05 successively, and from bottom to top place successively cavity block 02, solid plate 01 by wedge block 1 tiltedly take out the direction setting tiltedly take out slideway, and the horizontal sides face of supporting base 5 is horizontally fixed in the solid plate 01 of upper end; The cylinder body of oil cylinder 4 is by on the oblique lateral wall that is fixed on solid plate 01 in the γ angle of supporting base, and the piston rod of oil cylinder 4 links to each other with the large first end side surface quadrature of wedge block 1 wedge shape; The γ angle of supporting base also is the oblique top deflection of oil cylinder 4,, is determined the oblique orientation angle that installs and fixes of oil cylinder 4 by the γ angle of supporting base that is;
If the piece 3 of tiltedly loosing core is tiltedly taken out the angle of direction and mould die sinking azimuth axis for tiltedly taking out deflection β; Tiltedly take out deflection β by the required structures shape of tiltedly taking out of injection-molded item, be known conditions, the α angle of wedge block 1 also is known conditions after selected, then, and γ=β-α.
Operation principle
When oil cylinder 4 ejected, the piston rod of oil cylinder 4 promoted wedge block 1 along between the T shape slide rail 04 wedging angle ejector rod 2 of angle ejector rod 2, supporting base 5 and the supporting base 5, and angle ejector rod 2 piece 3 edges of will tiltedly loosing core are tiltedly taken out the oblique downward ejection of slideway and put in place; During oil cylinder 4 retraction, the piston rod pulling wedge block 1 of oil cylinder 4 retreats retraction along the T shape slide rail 04 of angle ejector rod 2, supporting base 5, and angle ejector rod 2 pullings are tiltedly loosed core, and slideway is oblique upwards looses core piece 3 along tiltedly taking out.
During mold injection, powerful injection pressure forces piece 3 rollbacks of tiltedly loosing core, at this moment, wedge block 1 between wedging angle ejector rod 2 and the supporting base 5 is decomposed into the direction power of tiltedly the taking out F of angle ejector rod 2 rollbacks with the inclined edge surfaces of supporting base 5 perpendicular malleation component F1 with along two component of oblique top direction component F2 of oil cylinder 4 oblique top directions by the α angle; Malleation component F1 is applied on the solid plate 01 through supporting base 5, acting on of oblique top direction component F2 produces rollback power on the wedge block 1, because the α angle of wedge block 1 is less than the angle of friction of material, the frictional force that malleation component F1 produces is greater than the rollback power of wedge block 1, so that wedge block 1 self-locking and transfixion, thereby guarantee tiltedly to loose core piece 3 rollback not under huge injection pressure; In addition, because the power-saving function on inclined-plane, it is very not large to affect wedge block 1 to drive the piece 3 of tiltedly the loosing core required active force of loosing core, reset through angle ejector rod 2, therefore, selects body is little, cost is low, energy consumption is low oil cylinder 4 just can be competent at and affects loosing core and resetting of the piece 3 of tiltedly loosing core.
Beneficial effect
The setting of angle ejector rod 2, only need in cavity block 02, solid plate 01 to arrange and tiltedly take out slideway by the direction of tiltedly taking out of wedge block 1, thereby improved solid plate 01 intensity, overcome prior art and need to cut open the chest greatly to arrange the drawback that plagioclase groove 03 reduces solid plate 01 intensity.
Claims (1)
- One kind can the self-locking retaining the cover half core-pulling mechanism, comprise wedge block (1), angle ejector rod (2), tiltedly loose core piece (3), oil cylinder (4), supporting base (5), it is characterized in that: described wedge block (1) is along long side direction, biend presss from both sides the wedge shape of α angle up and down, microcephaly's one end side surface of wedge shape is the plane with the lower surface quadrature, the large first end side surface of wedge shape is and the plane of upper surface quadrature that two long side faces are and up and down biend quadrature and each other plane-parallel wedge shape steel blocks; Along long side direction, being equipped with the cross section on the up and down biend of wedge block is the T shape chute (05) of the groove formation of inverted T-shape; Described α angle span is 12 °～16 °;Described angle ejector rod (2) is the steel columnar block of rectangle; Be equipped with the T shape slide rail (04) that direction is identical, the cross section is the T font, protrude on the up and down biend of angle ejector rod; T shape slide rail (04) is slidingly matched with described T shape chute (05);The described piece (3) of tiltedly loosing core is provided with the profile identical with the local profile of injection-molded item (06) for the lower surface, and the upper surface is provided with T shape chute (05), and four sides are adjacent orthogonal, the steel columnar block on the plane of opposing parallel;The hydraulically extensible pushing tow executive component of described oil cylinder (4) for being consisted of by cylinder body, piston rod;Described supporting base (5) is that horizontal sides and hypotenuse angle are the right angled triangle steel blocks of γ; The horizontal sides face of supporting base, vertical edges face and two side faces are the plane; The inclined edge surfaces of supporting base is provided with T shape slide rail (04); The γ angle that the horizontal sides of supporting base (5) and hypotenuse are folded is called the γ angle of supporting base (5);Mutual alignment and annexation are, from bottom to top tiltedly loose core piece (3), angle ejector rod (2), wedge block (1), supporting base (5) links to each other through separately T shape slide rail (04) or T shape chute (05) successively, and from bottom to top place successively cavity block (02), solid plate (01) by wedge block (1) tiltedly take out the direction setting tiltedly take out slideway, and the horizontal sides face of supporting base (5) is horizontally fixed in the solid plate (01) of upper end; The cylinder body of oil cylinder (4) is by on the oblique lateral wall that is fixed on solid plate (01) in the γ angle of supporting base, and the piston rod of oil cylinder (4) links to each other with the large first end side surface quadrature of wedge block (1) wedge shape; The γ angle of supporting base also is the oblique top deflection of oil cylinder (4); If the piece (3) of tiltedly loosing core is tiltedly taken out the angle of direction and mould die sinking azimuth axis for tiltedly taking out deflection β; Then, γ=β-α.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010269043 CN101913231B (en) | 2010-08-23 | 2010-08-23 | Fixed die core-pulling mechanism capable of self-locking and backstopping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010269043 CN101913231B (en) | 2010-08-23 | 2010-08-23 | Fixed die core-pulling mechanism capable of self-locking and backstopping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101913231A CN101913231A (en) | 2010-12-15 |
| CN101913231B true CN101913231B (en) | 2013-02-13 |
Family
ID=43320947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010269043 Expired - Fee Related CN101913231B (en) | 2010-08-23 | 2010-08-23 | Fixed die core-pulling mechanism capable of self-locking and backstopping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101913231B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555161B (en) * | 2010-12-31 | 2014-06-11 | 海尔集团公司 | Oil cylinder core-loosening injection mould with spring self-locking mechanism |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114680A (en) * | 2011-01-31 | 2011-07-06 | 常州工学院 | Cavity mould side pulling mechanism |
| CN102152448B (en) * | 2011-03-21 | 2014-02-05 | 凯达电子(昆山)有限公司 | Injection mold with movement core insert stopping mechanism |
| CN102343651B (en) * | 2011-10-24 | 2014-05-14 | 宁海县大鹏模具塑料有限公司 | Slanting slider locking slanted extracting device of fixing mold of injection mold |
| CN102689419B (en) * | 2012-05-23 | 2014-11-26 | 宁海胜利模具有限公司 | Lifting core-pulling device with angle-lift core block |
| CN103171099B (en) * | 2013-03-25 | 2015-10-28 | 宁海县现代模具有限公司 | The self-locking structure of mould of plastics cylinder slide block |
| CN108858916A (en) * | 2018-07-03 | 2018-11-23 | 盐城市建得模塑有限公司 | A kind of self-locking interior pumping mode block of plastic mould |
| CN108943520A (en) * | 2018-08-22 | 2018-12-07 | 苏州广型模具有限公司 | A kind of deflecting pulled core structure |
| CN113334705B (en) * | 2021-05-10 | 2022-06-21 | 宁波方正汽车模具股份有限公司 | Slide block driving mechanism for die |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337423A (en) * | 2008-08-08 | 2009-01-07 | 宁波跃飞模具有限公司 | Large-angle inclined ejecting-block core-pulling mechanism on the medial surface of the injection mold |
| CN201291567Y (en) * | 2008-11-19 | 2009-08-19 | 宁海县第一注塑模具有限公司 | Knockout core apparatus for withdrawing in overlength travel range of mould slide block |
| CN201736405U (en) * | 2010-08-23 | 2011-02-09 | 宁海县第一注塑模具有限公司 | Self-locking and die stopping fixed die core-loosening mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7080535B2 (en) * | 2004-04-20 | 2006-07-25 | General Motors Corporation | Spring-loaded part extractors for heated forming tools |
-
2010
- 2010-08-23 CN CN 201010269043 patent/CN101913231B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337423A (en) * | 2008-08-08 | 2009-01-07 | 宁波跃飞模具有限公司 | Large-angle inclined ejecting-block core-pulling mechanism on the medial surface of the injection mold |
| CN201291567Y (en) * | 2008-11-19 | 2009-08-19 | 宁海县第一注塑模具有限公司 | Knockout core apparatus for withdrawing in overlength travel range of mould slide block |
| CN201736405U (en) * | 2010-08-23 | 2011-02-09 | 宁海县第一注塑模具有限公司 | Self-locking and die stopping fixed die core-loosening mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555161B (en) * | 2010-12-31 | 2014-06-11 | 海尔集团公司 | Oil cylinder core-loosening injection mould with spring self-locking mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101913231A (en) | 2010-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101913231B (en) | Fixed die core-pulling mechanism capable of self-locking and backstopping | |
| CN103358494B (en) | Secondary core-pulling and ejection demoulding device by asynchronous inclined downward ejection | |
| CN103252876B (en) | A kind of slotted eye slip key type simple and easy self-locking angled-lift splits ancillary equipment | |
| CN201816189U (en) | Secondary linkage forced core-pulling mechanism of injection mould | |
| CN201736405U (en) | Self-locking and die stopping fixed die core-loosening mechanism | |
| CN102615793A (en) | Core-pulling structure for front mold sliding block of injection mold with self-locking mechanism | |
| CN102139524A (en) | Injection mould for automobile fuel tank fuel filler cap | |
| CN102689419B (en) | Lifting core-pulling device with angle-lift core block | |
| CN202045835U (en) | Cavity mould side-drawing mechanism | |
| CN202727273U (en) | Oblique core-pulling mechanism arranged on fixed mould support plate | |
| CN104908247A (en) | Externalinclined core pulling device of injection mold | |
| CN201669859U (en) | Retraction-prevention device of injection mold oil cylinder loose core | |
| CN203357821U (en) | Rotary core-pulling device of injection mold | |
| CN102514154B (en) | Pulling device of fixed die top plate | |
| CN101704291A (en) | Double-cylinder bidirectional synchronous opposite vertex diagonal-slip core puller | |
| CN203879524U (en) | Expansion shell type hollow anchor rod | |
| CN202540635U (en) | Front mould sliding block core-pulling structure of injection mould with self-locking mechanism | |
| CN202378251U (en) | Novel core pulling mechanism | |
| CN103434090B (en) | A kind of Rotary core puller of injection mold | |
| CN201471691U (en) | Core pulling device with small slide block in large slide block | |
| CN101823321A (en) | Anti-retraction device of loose core of oil cylinder of injection mold | |
| CN102285074A (en) | Inside and outside synchronous core pulling mechanism of vehicle wheel cover injection mould | |
| CN203210630U (en) | Simple self-locking inclined slider pair device with slots and sliding key | |
| CN202318799U (en) | Oblique core pulling device for fixing mold | |
| CN202192741U (en) | Oblique core-pulling device with double sliders longitudinally driven by cylinder embedded in movable mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20170823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |