CN104325608A - Three-linkage synthesis core-pulling device of injection mould - Google Patents
Three-linkage synthesis core-pulling device of injection mould Download PDFInfo
- Publication number
- CN104325608A CN104325608A CN201410584107.5A CN201410584107A CN104325608A CN 104325608 A CN104325608 A CN 104325608A CN 201410584107 A CN201410584107 A CN 201410584107A CN 104325608 A CN104325608 A CN 104325608A
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- Prior art keywords
- slide block
- sliding block
- called
- block
- slide rail
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
- B29C2045/334—Mountings or guides therefor; Drives therefor several transversely movable mould parts driven by a single drive means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a three-linkage synthesis core-pulling device of an injection mould. The three-linkage synthesis core-pulling device comprises a big sliding block (1), a small sliding block (2), a lower sliding block (3), a separation and reunion pin (4) and an oil cylinder (5), wherein the big sliding block is provided with a pipe cavity, a small sliding groove and a pin groove; the small sliding block is provided with a pipe core, an inclined sliding rail and an upper separation and reunion groove, and the inclined sliding rail is provided with a limiting step; the lower sliding block is provided with a limiting rod; a movable mould support plate is provided with a lower separation and reunion groove; the big sliding block is arranged on the movable mould support plate in a sliding way; the small sliding block is arranged in the small sliding groove in a sliding way; a cylinder body of the oil cylinder is fixedly connected with the movable mould support plate; a piston rod of the oil cylinder is fixedly connected with the small sliding block; the separation and reunion pin is arranged in the pin groove of the big sliding block; when the mould is closed, the lower end of the separation and reunion pin is clamped in the lower separation and reunion groove; when the mould works, the small sliding block is driven by the oil cylinder to enable core-puling to be firstly carried out on the pipe core and the lower sliding block; when the separation and reunion pin is inserted into the upper separation and reunion groove, the big sliding block is connected with the small sliding block, so that core-pulling is carried out on the pipe cavity; therefore, injection mould provided with a plurality of pulling cores at the narrow position achieves the aims of simplifying the structure, reducing the body form, lowering the cost and eliminating failure.
Description
Technical field
The present invention relates to a kind of core_pulling demoulding device of injection mold, specifically refer to the injection mold for automobile duct set road goods, three different blocks of loosing core to be linked synthesis core-pulling device from back-off structure core_pulling demoulding a kind of injection mold three out of goods interface tube.
Background technology
Need to arrange in narrow and small position multiple different block carry out the injection mold of core_pulling demoulding of loosing core, prior art adopts and drives respective block action of loosing core to carry out core_pulling demoulding respectively in order by multiple oil cylinder, the many costs of oil cylinder are just high, take mould inside space large, cause the increase of mould body, complex structure, die cost increases further; In addition, multiple oil cylinder respectively job order control overflow is strict, and slightly mistake will mold damage; Therefore, there is complex structure in prior art, body is large, cost is high, easily send out the problems and shortcomings of fault.
Summary of the invention
For above-mentioned prior art Problems existing with not enough, the present invention adopts the device be made up of large slide block, small slide block, sliding block, on-of pin, oil cylinder, and wherein, large slide block is provided with tube chamber, little chute, cotter way, small slide block is provided with tube core, tiltedly slide rail, upper clutch slot, and oblique slide rail is provided with limited step, sliding block is provided with gag lever post, dynamic model support plate is provided with lower clutch slot, large slide block can horizontally slip and be positioned at above dynamic model support plate, small slide block can horizontally slip and be positioned at described little chute, the cylinder body of oil cylinder is fixedly connected with dynamic model support plate, and the piston rod of oil cylinder is fixedly connected with the right-hand member of small slide block, and on-of pin can slide up and down the described cotter way being positioned at large slide block, when mould closes, the lower end of on-of pin is stuck in described lower clutch slot, and large slide block and dynamic model support plate lock, during work, hydraulic oil cylinder driving small slide block and described oblique slide rail move right, and tube core is loosed core to the right from the inwall of the interface tube of goods, and meanwhile, the moving to right of oblique slide rail makes sliding block move down to be separated with the outer wall back-off of the interface tube of goods, while the gag lever post of sliding block is hooked into described limited step, the described upper clutch slot of small slide block moves to the top of on-of pin, due to lateral stressed, the upper end of on-of pin is upwards inserted in described upper clutch slot, large slide block and dynamic model support plate unlock, small slide block is connected with large slide block and locks, small slide block drives large slide block to move right immediately, three interlocks that the described tube chamber of large slide block looses core out from the outer wall of the interface tube of goods are made to synthesize the technical scheme of loosing core to the right, there is provided a kind of injection mold three to link and synthesize core-pulling device, be intended to make needs arrange multiple injection mold of loosing core at narrow position, reach simplification structure, reduce body, reduce costs, eliminate the object of fault.
The object of the present invention is achieved like this: a kind of injection mold three links and synthesizes core-pulling device, comprise large slide block, small slide block, sliding block, on-of pin, oil cylinder, wherein: described large slide block is block steel components, the middle part of large slide block be provided with notch down, the groove that communicates of left and right directions is called little chute, the top of the left surface of large slide block is provided with the profile corresponding with the outer wall shape face of the interface tube of goods and is called tube chamber, and the bottom front and back position of large slide block left surface is also provided with the profile of coincideing with the back-off structure of goods and is called horizontal button-type face; The slide rail being provided with left and right directions below large slide block is called large slide rail, and the rectangular through-hole that the right part of described large slide rail is provided with above-below direction is called cotter way;
Described small slide block is block steel components, be provided with protrusion, the core corresponding with the inwall shape face of the interface tube of goods left above the left part of small slide block and be called tube core, be provided with slide rail that is downward-sloping, that protrude from right to left below the left part of small slide block left and be called oblique slide rail, the groove that right part above described oblique slide rail is provided with cross section semicircular in shape is called limit bar chute, and the left side cell wall of described limit bar chute is called limited step; The slide rail being provided with left and right directions below small slide block is called little slide rail, is provided with fore-and-aft direction, the groove of cross section semicircular in shape is called clutch slot below described little slide rail;
Described sliding block is the main block steel components looked in L-shaped, and the profile being provided with second slit bamboo or chopped wood corresponding with the outer wall back-off structure shape face of the interface tube of goods above the left part of sliding block is called lower slit bamboo or chopped wood profile; Be provided with chute below sliding block and be called gliding groove, the right flank of sliding block is provided with the gag lever post be made up of hexagon socket cap head screw;
Described on-of pin be main depending in Long Circle, overlook rectangular block steel components;
Described oil cylinder is the hydraulically extensible executive component be made up of cylinder body, piston rod;
Large slide block can horizontally slip and be positioned at above dynamic model support plate, dynamic model support plate be above provided with fore-and-aft direction, the groove of cross section semicircular in shape is called lower clutch slot; Small slide block can horizontally slip and be positioned at the described little chute of large slide block, and sliding block fastens through described gliding groove and described oblique slide rail and is slidably connected with small slide block, and the socket cap of the described gag lever post right-hand member of sliding block slides and is embedded in the described limit bar chute of oblique slide rail; The cylinder body of oil cylinder is fixedly connected with dynamic model support plate, and the piston rod of oil cylinder is fixedly connected with the right-hand member of small slide block, and on-of pin can slide up and down the described cotter way being positioned at large slide block; When mould closes, the lower end of on-of pin is stuck in the described lower clutch slot of dynamic model support plate, and large slide block and dynamic model support plate lock.
The face, direction of said structure statement is divided into up, down, left, right, front, rear side, wherein, before be face in the face of device front view, after be and described before relative face.
Operation principle and beneficial effect
Loose core work time, hydraulic oil cylinder driving small slide block and described oblique slide rail move right, and make tube core loose core out from the inwall of the interface tube of goods to the right, simultaneously, removing to the right of oblique slide rail makes sliding block move down, and the described lower slit bamboo or chopped wood profile of sliding block is separated with the outer wall back-off of the interface tube of goods; While the socket cap of the described gag lever post right-hand member of sliding block is hooked into the described limited step of oblique slide rail, the described upper clutch slot of small slide block moves to the top of on-of pin, because the oblique slide rail of gag lever post hook causes the connection of on-of pin and described lower clutch slot lateral stressed, the upper end of on-of pin is made upwards to insert in described upper clutch slot, large slide block and dynamic model support plate unlock, and small slide block is connected with large slide block and locks; Small slide block drives large slide block to move right immediately, makes the described tube chamber of large slide block loose core out from the outer wall of the interface tube of goods to the right, makes the described horizontal button-type face of large slide block loose core with goods simultaneously and is separated.
This apparatus structure is simple, reliable operation, only needs an oil cylinder once can complete above-mentioned three longitudinal, horizontal interlock synthesis and to loose core action; Make needs that multiple injection mold of loosing core is set at narrow position, simplify the structure, reduce body, reduce cost, eliminate potential faults.
Above-mentioned, the present invention adopts the device be made up of large slide block, small slide block, sliding block, on-of pin, oil cylinder, and wherein, large slide block is provided with tube chamber, little chute, cotter way, small slide block is provided with tube core, tiltedly slide rail, upper clutch slot, and oblique slide rail is provided with limited step, sliding block is provided with gag lever post, dynamic model support plate is provided with lower clutch slot, large slide block can horizontally slip and be positioned at above dynamic model support plate, small slide block can horizontally slip and be positioned at described little chute, the cylinder body of oil cylinder is fixedly connected with dynamic model support plate, and the piston rod of oil cylinder is fixedly connected with the right-hand member of small slide block, and on-of pin can slide up and down the described cotter way being positioned at large slide block, when mould closes, the lower end of on-of pin is stuck in described lower clutch slot, and large slide block and dynamic model support plate lock, during work, hydraulic oil cylinder driving small slide block and described oblique slide rail move right, and tube core is loosed core to the right from the inwall of the interface tube of goods, and meanwhile, the moving to right of oblique slide rail makes sliding block move down to be separated with the outer wall back-off of the interface tube of goods, while the gag lever post of sliding block is hooked into described limited step, the described upper clutch slot of small slide block moves to the top of on-of pin, due to lateral stressed, the upper end of on-of pin is upwards inserted in described upper clutch slot, large slide block and dynamic model support plate unlock, small slide block is connected with large slide block and locks, small slide block drives large slide block to move right immediately, three interlocks that the described tube chamber of large slide block looses core out from the outer wall of the interface tube of goods are made to synthesize the technical scheme of loosing core to the right, overcome prior art and there is complex structure, body is large, cost is high, easily send out the problems and shortcomings of fault, a kind of injection mold three provided links and synthesizes core-pulling device, make needs that multiple injection mold of loosing core is set at narrow position, reach simplification structure, reduce body, reduce costs, eliminate the object of fault.
Accompanying drawing explanation
Fig. 1 is that the master of a kind of injection mold three of the present invention interlock synthesis core-pulling device looks sectional structure schematic diagram;
Fig. 2 is a kind of injection mold three of the present invention interlock synthesis core-pulling device, and be operated in small slide block 2 and move to right and make tube core 21 loose core out, sliding block 3 moves down the principle schematic making described lower slit bamboo or chopped wood profile be separated tense with the outer wall back-off of the interface tube 031 of goods 03 simultaneously;
Fig. 3 is a kind of injection mold three of the present invention interlock synthesis core-pulling device, being operated in small slide block 2 drives large slide block 1 to move to right, make the described tube chamber of large slide block 1 loose core out from the outer wall of the interface tube 031 of goods 03, make the described horizontal button-type face of large slide block 1 be separated the principle schematic of tense with goods 03 simultaneously;
Fig. 4 is the schematic diagram of a kind of automobile duct set road goods 03.
Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but should not be construed as any limitation of the invention.
In figure: large slide block 1, small slide block 2, tube core 21, tiltedly slide rail 22, upper clutch slot 23, sliding block 3, gag lever post 31, on-of pin 4, oil cylinder 5, dynamic model support plate 01, lower clutch slot 011, core 02, goods 03, interface tube 031, back-off 032.
Detailed description of the invention
Consult Fig. 1 ~ Fig. 4, a kind of injection mold three of the present invention links and synthesizes core-pulling device, comprise large slide block 1, small slide block 2, sliding block 3, on-of pin 4, oil cylinder 5, wherein: described large slide block 1 is block steel components, the middle part of large slide block 1 be provided with notch down, the groove that communicates of left and right directions is called little chute, the top of the left surface of large slide block 1 is provided with the profile corresponding with the outer wall shape face of the interface tube 031 of goods 03 and is called tube chamber, and the bottom front and back position of large slide block 1 left surface is also provided with the profile of coincideing with the back-off structure of goods 03 and is called horizontal button-type face; The slide rail being provided with left and right directions below large slide block 1 is called large slide rail, and the rectangular through-hole that the right part of described large slide rail is provided with above-below direction is called cotter way;
Described small slide block 2 is block steel components, be provided with protrusion, the core corresponding with the inwall shape face of the interface tube 031 of goods 03 left above the left part of small slide block 2 and be called tube core 21, be provided with slide rail that is downward-sloping, that protrude from right to left below the left part of small slide block 2 left and be called oblique slide rail 22, the groove that right part above described oblique slide rail 22 is provided with cross section semicircular in shape is called limit bar chute, and the left side cell wall of described limit bar chute is called limited step; The slide rail being provided with left and right directions below small slide block 2 is called little slide rail, is provided with fore-and-aft direction, the groove of cross section semicircular in shape is called clutch slot 23 below described little slide rail;
Described sliding block 3 is the main block steel components looked in L-shaped, and the profile being provided with second slit bamboo or chopped wood corresponding with the outer wall back-off structure shape face of the interface tube 031 of goods 03 above the left part of sliding block 3 is called lower slit bamboo or chopped wood profile; Be provided with chute below sliding block 3 and be called gliding groove, the right flank of sliding block 3 is provided with the gag lever post 31 be made up of hexagon socket cap head screw;
Described on-of pin 4 be main depending in Long Circle, overlook rectangular block steel components;
Described oil cylinder 5 is the hydraulically extensible executive component be made up of cylinder body, piston rod;
Large slide block 1 can horizontally slip and be positioned at above dynamic model support plate 01, dynamic model support plate 01 be above provided with fore-and-aft direction, the groove of cross section semicircular in shape is called lower clutch slot 011; Small slide block 2 can horizontally slip and be positioned at the described little chute of large slide block 1, sliding block 3 fastens through described gliding groove and described oblique slide rail 22 and is slidably connected with small slide block 2, and the socket cap of described gag lever post 31 right-hand member of sliding block 3 slides and is embedded in the described limit bar chute of oblique slide rail 22; The cylinder body of oil cylinder 5 is fixedly connected with dynamic model support plate 01, and the piston rod of oil cylinder 5 is fixedly connected with the right-hand member of small slide block 2, and on-of pin 4 can slide up and down the described cotter way being positioned at large slide block 1; When mould closes, the lower end of on-of pin 4 is stuck in the described lower clutch slot 011 of dynamic model support plate 01, and large slide block 1 locks with dynamic model support plate 01.
The face, direction of said structure statement is divided into up, down, left, right, front, rear side, wherein, before be face in the face of device front view, after be and described before relative face.
Operation principle and beneficial effect
Loose core work time, oil cylinder 5 drives small slide block 2 and described oblique slide rail 22 to move right, tube core 21 is made to loose core out from the inwall of the interface tube 031 of goods 03 to the right, simultaneously, removing to the right of oblique slide rail 22 makes sliding block 3 move down, and the described lower slit bamboo or chopped wood profile of sliding block 3 is separated with the outer wall back-off of the interface tube 031 of goods 03; While the socket cap of described gag lever post 31 right-hand member of sliding block 3 is hooked into the described limited step of oblique slide rail 22, the described upper clutch slot 23 of small slide block 2 moves to the top of on-of pin 4, because the oblique slide rail of gag lever post 31 hook 22 causes on-of pin 4 lateral stressed with the connection of described lower clutch slot 011, the upper end of on-of pin 4 is made upwards to insert in described upper clutch slot 23, large slide block 1 and dynamic model support plate 01 unlock, and small slide block 2 is connected with large slide block 1 and locks; Small slide block 2 drives large slide block 1 to move right immediately, makes the described tube chamber of large slide block 1 loose core out from the outer wall of the interface tube 031 of goods 03 to the right, makes the described horizontal button-type face of large slide block 1 loose core with goods 03 simultaneously and is separated.
This apparatus structure is simple, reliable operation, only needs an oil cylinder once can complete above-mentioned three longitudinal, horizontal interlock synthesis and to loose core action; Make needs that multiple injection mold of loosing core is set at narrow position, simplify the structure, reduce body, reduce cost, eliminate potential faults.
Claims (1)
1. an injection mold three links and synthesizes core-pulling device, comprise large slide block (1), small slide block (2), sliding block (3), on-of pin (4), oil cylinder (5), it is characterized in that: described large slide block (1) is block steel components, the middle part of large slide block (1) is provided with notch down, the groove that left and right directions communicates is called little chute, the top of the left surface of large slide block (1) is provided with the profile corresponding with the outer wall shape face of the interface tube of goods (03) (031) and is called tube chamber, the bottom front and back position of large slide block (1) left surface is also provided with the profile of coincideing with the back-off structure of goods (03) and is called horizontal button-type face, the slide rail being provided with left and right directions below large slide block (1) is called large slide rail, and the rectangular through-hole that the right part of described large slide rail is provided with above-below direction is called cotter way,
Described small slide block (2) is block steel components, be provided with protrusion, the core corresponding with the inwall shape face of the interface tube (031) of goods (03) left above the left part of small slide block (2) and be called tube core (21), be provided with slide rail that is downward-sloping, that protrude from right to left below the left part of small slide block (2) left and be called oblique slide rail (22), the groove that right part above described oblique slide rail (22) is provided with cross section semicircular in shape is called limit bar chute, and the left side cell wall of described limit bar chute is called limited step; The slide rail being provided with left and right directions below small slide block (2) is called little slide rail, is provided with fore-and-aft direction, the groove of cross section semicircular in shape is called clutch slot (23) below described little slide rail;
Described sliding block (3) is the main block steel components looked in L-shaped, and the profile being provided with second slit bamboo or chopped wood corresponding with the outer wall back-off structure shape face of the interface tube of goods (03) (031) above the left part of sliding block (3) is called lower slit bamboo or chopped wood profile; Be provided with chute below sliding block (3) and be called gliding groove, the right flank of sliding block (3) is provided with the gag lever post (31) be made up of hexagon socket cap head screw;
Described on-of pin (4) be main depending in Long Circle, overlook rectangular block steel components;
Described oil cylinder (5) is the hydraulically extensible executive component be made up of cylinder body, piston rod;
Large slide block (1) can horizontally slip and be positioned at above dynamic model support plate (01), dynamic model support plate (01) be above provided with fore-and-aft direction, the groove of cross section semicircular in shape is called lower clutch slot (011); Small slide block (2) can horizontally slip and be positioned at the described little chute of large slide block (1), sliding block (3) fastens through described gliding groove and described oblique slide rail (22) and is slidably connected with small slide block (2), and the socket cap of described gag lever post (31) right-hand member of sliding block (3) slides and is embedded in the described limit bar chute of oblique slide rail (22); The cylinder body of oil cylinder (5) is fixedly connected with dynamic model support plate (01), the piston rod of oil cylinder (5) is fixedly connected with the right-hand member of small slide block (2), and on-of pin (4) can slide up and down the described cotter way being positioned at large slide block (1); When mould closes, the lower end of on-of pin (4) is stuck in the described lower clutch slot (011) of dynamic model support plate (01), and large slide block (1) and dynamic model support plate (01) lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584107.5A CN104325608B (en) | 2014-10-17 | 2014-10-17 | A kind of injection mold three linkage synthesis core-pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584107.5A CN104325608B (en) | 2014-10-17 | 2014-10-17 | A kind of injection mold three linkage synthesis core-pulling device |
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| Publication Number | Publication Date |
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| CN104325608A true CN104325608A (en) | 2015-02-04 |
| CN104325608B CN104325608B (en) | 2016-09-21 |
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| CN201410584107.5A Active CN104325608B (en) | 2014-10-17 | 2014-10-17 | A kind of injection mold three linkage synthesis core-pulling device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943085A (en) * | 2015-07-14 | 2015-09-30 | 肖国华 | Three-layer core-pulling slide block mechanism |
| CN111113818A (en) * | 2020-01-17 | 2020-05-08 | 厦门市超日精密模具有限公司 | Core-pulling and mold-opening structure of heterodromous combined slide block and core-pulling method of mold |
| CN113085113A (en) * | 2021-06-04 | 2021-07-09 | 宁波均胜群英汽车系统股份有限公司 | Core pulling structure for producing injection mold for rearview mirror shell |
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| CN201350673Y (en) * | 2009-02-16 | 2009-11-25 | 唯科(厦门)精密塑胶模具有限公司 | Novel inclined core-pulling sliding block structure |
| CN102555167A (en) * | 2012-03-26 | 2012-07-11 | 揭阳市大立模具厂有限公司 | Inner core-pulling type mold |
| CN202462792U (en) * | 2012-03-03 | 2012-10-03 | 宁波思迈工业科技有限公司 | Device for pulling two opposite cores in synchronously linked way |
| CN204183831U (en) * | 2014-10-17 | 2015-03-04 | 宁波双林模具有限公司 | A kind of injection mold three links and synthesizes core-pulling device |
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| JP2008302537A (en) * | 2007-06-06 | 2008-12-18 | Bunji Matsumoto | Mold structure and its pushing-out/pulling-out method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943085A (en) * | 2015-07-14 | 2015-09-30 | 肖国华 | Three-layer core-pulling slide block mechanism |
| CN104943085B (en) * | 2015-07-14 | 2017-07-04 | 武汉思伟塑业有限公司 | A kind of three layers of core-pulling sliding block mechanism |
| CN111113818A (en) * | 2020-01-17 | 2020-05-08 | 厦门市超日精密模具有限公司 | Core-pulling and mold-opening structure of heterodromous combined slide block and core-pulling method of mold |
| CN111113818B (en) * | 2020-01-17 | 2023-04-28 | 超日(厦门)科技有限公司 | Sequential core-pulling and die-opening structure of anisotropic combined sliding block and core-pulling method of die |
| CN113085113A (en) * | 2021-06-04 | 2021-07-09 | 宁波均胜群英汽车系统股份有限公司 | Core pulling structure for producing injection mold for rearview mirror shell |
| CN113085113B (en) * | 2021-06-04 | 2021-08-20 | 宁波均胜群英汽车系统股份有限公司 | Core pulling structure for producing injection mold for rearview mirror shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104325608B (en) | 2016-09-21 |
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