CN104338920B - A kind of button die casting die casting and the utilization on compression mod of the ventilative steel - Google Patents
A kind of button die casting die casting and the utilization on compression mod of the ventilative steel Download PDFInfo
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- CN104338920B CN104338920B CN201410556566.2A CN201410556566A CN104338920B CN 104338920 B CN104338920 B CN 104338920B CN 201410556566 A CN201410556566 A CN 201410556566A CN 104338920 B CN104338920 B CN 104338920B
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- plate
- die casting
- ventilative
- ventilative steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
Abstract
A kind of button die casting die casting and the utilization on compression mod of the ventilative steel, dynamic model includes lower bolster, parallels, dynamic model backing plate, moving platen, guide pin bushing and dynamic model die cavity; Cover half includes cope match-plate pattern, solid plate, guide pillar and cover half die cavity; Cope match-plate pattern has centring ring, sprue bush, gate bush; Lower bolster has adapter; Lower push rod plate and upper ejector pin plate is had in parallels; Cushion block, push rod and release link is ejected in lower push rod plate and upper ejector pin plate; Pad nail and clamp is had between lower push rod plate and lower bolster; Cover half die cavity and movable model intracavity have ventilative steel mold insert and spreader; Ventilative steel mold insert afterbody has air-vent on dynamic, solid plate; Having slide block, pressing plate and core of loosing core between cover half die cavity and dynamic model die cavity, solid plate has brace and latch segment, parallels, dynamic model backing plate, moving platen are fastenedly connected by screw; The invention reside in the utilization at described a kind of button die casting die casting of the PM35 ventilative steel, to reach to improve product quality, improve the purpose of production efficiency.
Description
Technical field
The invention belongs to technology of die manufacturing field, be specifically related to a kind of button die casting die casting and the utilization on compression mod of the ventilative steel.
Background technology
The ventilative steel of PM35 is a kind of stainless sintered steel of high-quality powder metallurgy that Xin Dong company of Japan develops, and it has airing function, rust-proofing acid-proof very excellent capacity, and is prone to cutting and electro-discharge machining. It is connected by fine aperture inside it and constitutes, make air or any gas can permeate smoothly and pass. According to its pore size, be divided into the models such as PM35-7, PM35-25, PM35-35, at present domestic there is no on compression mod use report. But feed back according to data, it is comparatively ripe that this steel grade applies to plastic mold, as Chinese patent 201010291469.7 disclosed " a kind of injection mold core with suction and discharge, quick-cooling functional structure " and Chinese patent 201310528398.1 disclosed " plastics grafting set preparation method " have the ventilative steel of use.
The button die casting of the applicant, as shown in Figure 4, its overall dimensions is 7.2 �� 4 �� 1.9 to its product appearance, and double dot dash line position is appearance, need to process through bright nickel plating. Former die casting carries out a point mould by Fig. 5, designs structure such as Fig. 7, and mould is simple, easily fabricated and lasts a long time, but there is parting line dynamic, cover half at its arrow place, such as Fig. 8. Owing to this face is appearance, find during polishing before plating, because External Shape is less, its parting line is difficult to jettisoning, and quality of finish is unstable, and production efficiency is not high, mould is after a period of time uses, parting line becomes apparent from, and the requirement of polishing is more harsh, it is impossible to meet the requirement that auto parts are produced in enormous quantities.
For solving the problems referred to above, above-mentioned mould must be carried out the change in structure, namely carry out a point mould by Fig. 6 mode, the generation of Plating appearance face parting line can be avoided completely, but owing to being closing space, metal flow can produce high temperature, gases at high pressure at A face place, if discharging not in time, phenomenon of feeling suffocated can be formed, causing that the defects of die castings such as pressure deficiency, decorative pattern occurs in this place, generation is owed the defects such as casting, blibbing, affects the surface quality in Plating appearance face.For this, this place need to be carried out special ventilative process.
Summary of the invention
It is an object of the invention to provide a kind of button die casting die casting and the utilization on this compression mod of the ventilative steel, to reach to improve product quality, improve the purpose of production efficiency.
The purpose of the present invention and solve its technical problem underlying and realize by the following technical solutions: a kind of button die casting die casting, including dynamic model, cover half, dynamic model includes lower bolster, parallels, dynamic model backing plate, moving platen, guide pin bushing and dynamic model die cavity; Cover half includes cope match-plate pattern, solid plate, guide pillar and cover half die cavity; Cope match-plate pattern has centring ring, sprue bush, gate bush; Lower bolster has adapter; Lower push rod plate and upper ejector pin plate is had in parallels; Cushion block, push rod and release link is ejected in lower push rod plate and upper ejector pin plate; Pad nail and clamp is had between lower push rod plate and lower bolster; Cover half die cavity and movable model intracavity have ventilative steel mold insert and spreader; Ventilative steel mold insert afterbody has air-vent on dynamic, solid plate; There are slide block, pressing plate and core of loosing core between cover half die cavity and dynamic model die cavity, solid plate has brace and latch segment, drive slipper block loose core motion by brace. Parallels, dynamic model backing plate, moving platen are fastenedly connected by screw; Adapter and lathe connect, and drive push rod and release link in upper and lower mandrel plate to move back and forth by clamp, it is achieved part ejection process.
Above-mentioned a kind of button die casting die casting, wherein: described ventilative steel mold insert 22 is the ventilative steel of PM35, and model is PM35-25.
Above-mentioned a kind of button die casting die casting, wherein: setting air-vent and the maintenance inlet suction port of a �� 5mm after ventilative steel mold insert 22, its effect is: 1.. gas is derived mould, 2.. regularly access pressure-air, remove dirt, to keep the unimpeded of ventilative steel micropore.
The ventilative steel of PM35 is in the utilization of described a kind of button die casting die casting, as die cavity mold insert, its processing and instructions for use to reach following some:
(1) in the course of processing, the soft machining mode of low-speed WEDM, electric pulse and laser is used; During the big use harden-cutting of allowance, but finally leave 0.1��0.2mm surplus and complete with soft processing;
(2) when the ventilative steel of PM-35 is as mold insert, and the scale that mould bases keeps 1:10, regard 1 as by the volume of the ventilative steel of PM-35, the volume of mould bases is then that the thickness of 10, PM-35 ventilative steel mold inserts is between 30mm-50mm;
(3) the cutting oil adopted when cutting, grinding, digital control processing, uses oiliness one class; During as Water-soluble cutting oil must be used, after processing at once with removing oily dirty method, remove the moisture content in steel as early as possible;
(4) when carrying out low-speed WEDM, diameter 0.25mm or the processing of above copper cash are used; During as diameter 0.2mm or following EDM copper cash must be used, cutting speed is accelerated than usual 1.5 times;
(5) use polishing, 800-1000# sand paper or oilstone to solve the stopping state of slight micropore, and clear up grinding thing; Add and check permeability at any time man-hour, it is preferred to air inlet one edge polishing after assembling completes, clean with acetone after processing;
(6), during assembling, knock in hardwood or red copper backing plate; It is coated in surface as medium with acetone or kerosene after assembling, utilizes venthole to enter pressure-air, check air permeable effect; It is normal that whole surface should all uniformly, effectively emit bubble; As found, permeability declines, and makes up with electric pulse, the soft processing mode of laser, and cleans with acetone, can recover after being completely dried;
(7) when the aeration carrying out ventilative steel is recovered, the maneuver of process has: a. utilizes discharge-treating method, clears up the air-vent of blocking as mirror finish; B. with the method for hands mill, polish with No. 420 grinding abrasive papers, then with completion after No. 1200 grinding abrasive paper polishings; C. recover the breathability of mold insert, be both needed to process to the inside and outside surface of ventilative steel; D. on the mold base of ventilative steel mold insert that connects, steam vent is set;
(8) other remove greasy dirt method: 1.. and heated to 100 DEG C-150 DEG C by mould takes out the ventilative steel mold insert of PM35, allow oil gasification run off, then with compressed air rinsing surface; 2.. as mold insert is connected with mould bases, the ventilative aperture compressed air rinsing of mold base can be passed through, dirty for the oil on surface removing;
(9) mould needs to be dried up and rust prevention by applying liquid material agent by ventilative for PM35 steel with compression air in time after a procedure, it is prevented that its oxidation of getting rusty, and blows logical by mold base air-vent compression air, in order to avoid impact uses before using next time.
Principle analysis:
According to consulting, the tensile strength of the ventilative steel of PM35 is 450��500MPa, and its linear expansion coefficient is 12.0��12.5, all basically identical with ordinary carbon steel. and using state is that the pre-hard of factory state processes, its hardness reaches HV350��400(and HRC32��38), rule of thumb, metal material to reach this hardness, the sintering temperature of its powder of stainless steel should more than 850 DEG C, and below its phase point temperature (phase point temperature of ordinary carbon steel is typically in more than 1000 DEG C), and the smelting temperature of kirsite is at about 400 DEG C, (carbon steel is typically in about 450 DEG C not to reach temper brittleness regional temperature, steel alloy is higher), consider alloy graining, mould cools down, the factor such as conduction of heat and loss, general casting die cavity temperature is at about 200 DEG C. being significantly less than the original temperature of this steel, feed back according to data simultaneously, it is comparatively ripe that this steel grade applies to plastic mold, and the die temperance control of general plastic mold is at 100��120 DEG C, therefore is not too big with zinc alloy diecasting mould contrast. in view of above-mentioned combined cause, it is judged that can by this steel grade die casting for the said goods, ventilative steel be the stainless sintered steel of powder metallurgy, there is hole between its powder, and high temperature, gases at high pressure are controlled by hole, discharges then through steam vent. then reach to improve product quality, improve the purpose of production efficiency.
The present invention compared with prior art has clear advantage and beneficial effect. From above technical scheme, present invention completely avoids the surface quality problems of original mould, simultaneously because the improvement of surface quality, eliminate original polishing process, substantially reduce the production cycle of part, achieve obvious economic benefit, simultaneously the research to the ventilative steel of PM-35, walk out the road of a still NA technology, also provide a useful exploration and Summary on technology for the tired gas problem of solution compression mod from now on.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention,
Fig. 1-1 is the dynamic model top view of Fig. 1
Fig. 1-2 is the cover half top view of Fig. 1
Fig. 2 is the ventilative steel mold insert enlarged diagram of Fig. 1,
Fig. 3 is ventilative steel schematic diagram,
Fig. 4 is part schematic diagram,
Fig. 5 is original mould typing schematic diagram,
Fig. 6 is existing mould typing schematic diagram,
Fig. 7 is the original mould structure schematic diagram of prior art,
Fig. 8 is Fig. 7 part typing enlarged drawing.
Labelling in Fig. 1: 1, centring ring, 2, sprue bush, 3, gate bush, 4, cope match-plate pattern, 5, solid plate, 6, cover half die cavity, 7, moving platen, 8, dynamic model die cavity, 9, dynamic model backing plate, 10, parallels, 11, lower bolster, 12, pad nail, 13, adapter, 14, eject cushion block, 15, clamp, 16, lower push rod plate, 17, upper ejector pin plate, 18, slide block, 19, pressing plate, 20, latch segment, 21, brace, 22, ventilative steel mold insert, 23, air-vent, 24, spreader, 25, loose core core, 26, push rod, 27, release link, 28, guide pin bushing, 29, guide pillar.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, to utilization detailed description of the invention on compression mod of a kind of button die casting die casting proposed according to the present invention and ventilative steel, structure, feature and effect thereof, describe in detail as after.
Referring to Fig. 1-3, a kind of button die casting die casting, including dynamic model, cover half, dynamic model includes lower bolster 11, parallels 10, dynamic model backing plate 9, moving platen 7, guide pin bushing 28 and dynamic model die cavity 8; Cover half includes cope match-plate pattern 4, solid plate 5, guide pillar 29 and cover half die cavity 6; Cope match-plate pattern 4 has centring ring 1, sprue bush 2, gate bush 3; Lower bolster 11 has adapter 13, has lower push rod plate 16 and upper ejector pin plate 17 in parallels 10, lower push rod plate 16 and eject cushion block 14, push rod 26 and release link 27 in upper ejector pin plate 17, has pad nail 12 and clamp 15 between lower push rod plate 16 and lower bolster 11; Parallels 10, dynamic model backing plate 9, moving platen 7 are connected by screw; Having ventilative steel mold insert 22 and spreader 24 in cover half die cavity 6 and dynamic model die cavity 8, ventilative steel mold insert 22 afterbody has air-vent 23 on dynamic, solid plate; Solid plate 5 has brace 21 and latch segment 20, between brace 21 and latch segment 20, has slide block 18, slide block 18 has pressing plate 19 and core 25 of loosing core.
Above-mentioned a kind of button die casting die casting, wherein: described ventilative steel mold insert 22 is the ventilative steel of PM35, and model is PM35-25.
Above-mentioned a kind of button die casting die casting, wherein: setting air-vent and the maintenance inlet suction port of a �� 5mm after ventilative steel mold insert 22, its effect is: 1.. gas is derived mould, 2.. regularly access pressure-air, remove dirt, to keep the unimpeded of ventilative steel micropore.
Principle analysis:
According to consulting, the tensile strength of the ventilative steel of PM35 is 450��500MPa, and its linear expansion coefficient is 12.0��12.5, all basically identical with ordinary carbon steel. and using state is that the pre-hard of factory state processes, its hardness reaches HV350��400(and HRC32��38), rule of thumb, metal material to reach this hardness, the sintering temperature of its powder of stainless steel should more than 850 DEG C, and below its phase point temperature (phase point temperature of ordinary carbon steel is typically in more than 1000 DEG C), and the smelting temperature of kirsite is at about 400 DEG C, (carbon steel is typically in about 450 DEG C not to reach temper brittleness regional temperature, steel alloy is higher), consider alloy graining, mould cools down, the factor such as conduction of heat and loss, general casting die cavity temperature is at about 200 DEG C. being significantly less than the original temperature of this steel, feed back according to data simultaneously, it is comparatively ripe that this steel grade applies to plastic mold, and the die temperance control of general plastic mold is at 100��120 DEG C, therefore is not too big with zinc alloy diecasting mould contrast. in view of above-mentioned combined cause, it is judged that can by this steel grade die casting for the said goods, ventilative steel be the stainless sintered steel of powder metallurgy, there is hole between its powder, and high temperature, gases at high pressure are controlled by hole, discharges then through steam vent. then reach to improve product quality, improve the purpose of production efficiency.
The ventilative steel of PM35 in the utilization of described a kind of button die casting die casting, as the processing of die cavity mold insert and instructions for use to reach following some:
(1) in the course of processing, the soft machining mode of low-speed WEDM, electric pulse and laser is used; During the big use harden-cutting of allowance, but finally leave 0.1��0.2mm surplus and complete with soft processing;
(2) when the ventilative steel of PM-35 is as mold insert, and the scale that mould bases keeps 1:10, regard 1 as by the volume of the ventilative steel of PM-35, the volume of mould bases is then that the thickness of 10, PM-35 ventilative steel mold inserts is between 30mm-50mm;
(3) the cutting oil adopted when cutting, grinding, digital control processing, uses oiliness one class; During as Water-soluble cutting oil must be used, after processing at once with removing oily dirty method, remove the moisture content in steel as early as possible;
(4) when carrying out low-speed WEDM, diameter 0.25mm or the processing of above copper cash are used; During as diameter 0.2mm or following EDM copper cash must be used, cutting speed is accelerated than usual 1.5 times;
(5) use polishing, 800-1000# sand paper or oilstone to solve the stopping state of slight micropore, and clear up grinding thing; Add and check permeability at any time man-hour, it is preferred to air inlet one edge polishing after assembling completes, clean with acetone after processing;
(6), during assembling, knock in hardwood or red copper backing plate; It is coated in surface as medium with acetone or kerosene after assembling, utilizes venthole to enter pressure-air, check air permeable effect; It is normal that whole surface should all uniformly, effectively emit bubble; As found, permeability declines, and makes up with electric pulse, the soft processing mode of laser, and cleans with acetone, can recover after being completely dried;
(7) when the aeration carrying out ventilative steel is recovered, the maneuver of process has: a. utilizes discharge-treating method, clears up the air-vent of blocking as mirror finish; B. with the method for hands mill, polish with No. 420 grinding abrasive papers, then with completion after No. 1200 grinding abrasive paper polishings; C. recover the breathability of mold insert, be both needed to process to the inside and outside surface of ventilative steel; D. on the mold base of ventilative steel mold insert that connects, steam vent is set;
(8) other remove greasy dirt method: 1.. and heated to 100 DEG C-150 DEG C by mould takes out the ventilative steel mold insert of PM35, allow oil gasification run off, then with compressed air rinsing surface; 2.. as mold insert is connected with mould bases, the ventilative aperture compressed air rinsing of mold base can be passed through, dirty for the oil on surface removing;
(9) mould needs to be dried up and rust prevention by applying liquid material agent by ventilative for PM35 steel with compression air in time after a procedure, it is prevented that its oxidation of getting rusty, and blows logical by mold base air-vent compression air, in order to avoid impact uses before using next time.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, any without departing from technical solution of the present invention content, according to any simple modification, equivalent variations and modification that above example is made by the technical spirit of the present invention, all still fall within the scope of technical solution of the present invention.
Claims (2)
1. the ventilative steel of a PM35 is in the utilization of button die casting die casting, it is characterised in that: as die cavity mold insert, its processing and instructions for use to reach as described below:
(1), in the course of processing, the soft machining mode of low-speed WEDM, electric pulse and laser is used; During the big use harden-cutting of allowance, but finally leave 0.1��0.2mm surplus and complete with soft processing;
(2), the ventilative steel of PM-35 as mold insert time, and the scale that mould bases keeps 1:10, regard 1 as by the volume of the ventilative steel of PM-35, the volume of mould bases is then that the thickness of 10, PM-35 ventilative steel mold inserts is between 30mm-50mm;
(3), cutting, grind, digital control processing time adopt cutting oil, use oiliness one class; During as Water-soluble cutting oil must be used, after processing at once with removing oily dirty method, remove the moisture content in steel as early as possible;
(4), when carrying out low-speed WEDM, diameter 0.25mm or the processing of above copper cash are used;During as diameter 0.2mm or following EDM copper cash must be used, cutting speed is accelerated than usual 1.5 times;
(5), use polishing, 800-1000# sand paper or oilstone to solve the stopping state of slight micropore, and clear up grinding thing; Add and check permeability at any time man-hour, air inlet one edge polishing after assembling completes, clean with acetone after processing;
(6), assembling time, knock in hardwood or red copper backing plate; It is coated in surface as medium with acetone or kerosene after assembling, utilizes venthole to enter pressure-air, check air permeable effect; It is normal that whole surface should all uniformly, effectively emit bubble; As found, permeability declines, and makes up with electric pulse, the soft processing mode of laser, and cleans with acetone, can recover after being completely dried;
(7), when the aeration carrying out ventilative steel is recovered, the maneuver of process has: a. utilizes discharge-treating method, clears up the air-vent of blocking as mirror finish; B. with the method for hands mill, polish with No. 420 grinding abrasive papers, then with completion after No. 1200 grinding abrasive paper polishings; C. recover the breathability of mold insert, be both needed to process to the inside and outside surface of ventilative steel; D. on the mold base of ventilative steel mold insert that connects, steam vent is set;
(8), other remove greasy dirt method: 1.. and heated to 100 DEG C-150 DEG C by mould takes out the ventilative steel mold insert of PM35, allow oil gasification run off, then with compressed air rinsing surface; 2.. as mold insert is connected with mould bases, the ventilative aperture compressed air rinsing of mold base can be passed through, dirty for the oil on surface removing;
(9), mould needs to be dried up and rust prevention by applying liquid material agent by ventilative for PM35 steel with compression air in time after a procedure, it is prevented that its oxidation of getting rusty, and blows logical by mold base air-vent compression air, in order to avoid impact uses before using next time;
Described button die casting die casting, including dynamic model, cover half, dynamic model includes lower bolster (11), parallels (10), dynamic model backing plate (9), moving platen (7), guide pin bushing (28) and dynamic model die cavity (8); Cover half includes cope match-plate pattern (4), solid plate (5), guide pillar (29) and cover half die cavity (6); Cope match-plate pattern (4) has centring ring (1), sprue bush (2), gate bush (3); Lower bolster (11) has adapter (13), lower push rod plate (16) and upper ejector pin plate (17) is had in parallels (10), eject cushion block (14), push rod (26) and release link (27) in lower push rod plate (16) and upper ejector pin plate (17), between lower push rod plate (16) and lower bolster (11), have pad nail (12) and clamp (15); Parallels (10), dynamic model backing plate (9), moving platen (7) are connected by screw; Having ventilative steel mold insert (22) and spreader (24) in cover half die cavity (6) and dynamic model die cavity (8), ventilative steel mold insert (22) afterbody has air-vent (23) on dynamic, solid plate; Solid plate (5) has brace (21) and latch segment (20), between brace (21) and latch segment (20), has slide block (18), slide block (18) has pressing plate (19) and core of loosing core (25).
2. the ventilative steel of PM35 as claimed in claim 1 is in the utilization of button die casting die casting, it is characterised in that: set air-vent and the maintenance inlet suction port of a �� 5mm after ventilative steel mold insert (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410556566.2A CN104338920B (en) | 2014-10-20 | 2014-10-20 | A kind of button die casting die casting and the utilization on compression mod of the ventilative steel |
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| CN201410556566.2A CN104338920B (en) | 2014-10-20 | 2014-10-20 | A kind of button die casting die casting and the utilization on compression mod of the ventilative steel |
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| CN104338920B true CN104338920B (en) | 2016-06-08 |
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| CN106827267A (en) * | 2017-01-18 | 2017-06-13 | 天津市山友玉石纽扣有限公司 | A kind of mould for preparing jade button punching rubber moulding and the method for preparing the mould |
| CN107868899B (en) * | 2017-11-14 | 2020-03-31 | 宁海县大雅精密机械有限公司 | Permeable steel for injection molding and preparation method thereof |
| CN109203310A (en) * | 2018-09-03 | 2019-01-15 | 精英模具（珠海）有限公司 | A kind of manufacture craft of injection mold |
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| JPH0191937A (en) * | 1987-09-30 | 1989-04-11 | Nissin Kogyo Kk | Casting mold |
| CN201179557Y (en) * | 2008-04-16 | 2009-01-14 | 广州市型腔模具制造有限公司 | Air discharge mechanism of mould |
| CN202318800U (en) * | 2011-11-19 | 2012-07-11 | 牟维军 | Mould with inclined guide pillar on fixed die and side slide block on moving die |
| CN103028716A (en) * | 2011-10-08 | 2013-04-10 | 牟维军 | Die mechanism with secondary core extraction function |
| CN103144255A (en) * | 2011-12-07 | 2013-06-12 | 牟维军 | Mold mechanism realizing inner core extraction by oblique ejectors and outer core extraction by outer sliding blocks |
| CN203110254U (en) * | 2012-12-29 | 2013-08-07 | 牟维军 | Combined core-pulling die by oblique guide pillar, oblique chute and oblique press cake |
| CN204075145U (en) * | 2014-10-20 | 2015-01-07 | 贵州华昌汽车电器有限公司 | A kind of button die casting die casting |
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2014
- 2014-10-20 CN CN201410556566.2A patent/CN104338920B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0191937A (en) * | 1987-09-30 | 1989-04-11 | Nissin Kogyo Kk | Casting mold |
| CN201179557Y (en) * | 2008-04-16 | 2009-01-14 | 广州市型腔模具制造有限公司 | Air discharge mechanism of mould |
| CN103028716A (en) * | 2011-10-08 | 2013-04-10 | 牟维军 | Die mechanism with secondary core extraction function |
| CN202318800U (en) * | 2011-11-19 | 2012-07-11 | 牟维军 | Mould with inclined guide pillar on fixed die and side slide block on moving die |
| CN103144255A (en) * | 2011-12-07 | 2013-06-12 | 牟维军 | Mold mechanism realizing inner core extraction by oblique ejectors and outer core extraction by outer sliding blocks |
| CN203110254U (en) * | 2012-12-29 | 2013-08-07 | 牟维军 | Combined core-pulling die by oblique guide pillar, oblique chute and oblique press cake |
| CN204075145U (en) * | 2014-10-20 | 2015-01-07 | 贵州华昌汽车电器有限公司 | A kind of button die casting die casting |
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