CN102228942A - Semi-solid metal micro-thixoforming device with automatic mould emptier - Google Patents
Semi-solid metal micro-thixoforming device with automatic mould emptier Download PDFInfo
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- CN102228942A CN102228942A CN2011101131529A CN201110113152A CN102228942A CN 102228942 A CN102228942 A CN 102228942A CN 2011101131529 A CN2011101131529 A CN 2011101131529A CN 201110113152 A CN201110113152 A CN 201110113152A CN 102228942 A CN102228942 A CN 102228942A
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Abstract
The invention discloses a semi-solid metal micro-thixoforming device with an automatic mould emptier. In the semi-solid metal micro-thixoforming device, an upper die is connected with an upper die connecting rod through a bolt, the upper die connecting rod is connected with an upper beam of a press, and the upper die is internally provided with a heating rod and a thermocouple; the upper die connecting rod is sleeved in an upper discharging plate hole, and an upper discharging plate is connected with a lower discharging plate by using a pull rod and a nut; a base plate is fixed on the press through a bolt; a lower die is arranged in a pressing plate and a lower discharging plate, and the pressing plate is connected with the base plate through a bolt; the lower die is provided with a thermocouple, a heating rod and a gasket, and the heating rod is placed on the gasket; a sleeve is embedded between the lower discharging plate and the lower die; and during work, a sample is arranged on the upper surface of the lower die. According to the invention, the problem of incapability of demoulding in a semi-solid metal micro-thixoforming process is solved, and production efficiency is improved. Different upper dies and lower dies can be arranged, used for machining parts with different shapes and sizes, and can be repeatedly used, thus use range of the dies is enlarged, and cost of equipment is effectively reduced.
Description
Technical field
The present invention relates to the metal micro-forming device, relate in particular to the little thixotropic forming device of a kind of semi-solid-state metal with automatic demoulding mechanism.
Background technology
Along with the demand of miniature parts constantly increases, little forming technique of micro metal element has appearred traditional plastic working technique is applied to make in enormous quantities the nineties in 20th century.Little shaping is meant with the method for plastic working produces at least part or the structure technology that on two-dimensional directional size is in submillimeter level.It has inherited advantages such as traditional Technology of Plastic Processing production efficiency height, stock utilization height, mechanical property be good.
The Semi-Solid Metals Forming technology results from the seventies in 20th century, professor Flemings leader's research team find metal material in process of setting after brute force stirs, the dendritic network skeleton is broken, become nearly spheroidal structure, at this moment semi-solid-state metal has needed excellent properties of when shaping, is easy to process by commonsense method.This technology is a kind of production efficiency height, does not closely have surplus Accurate Shaping technology, size of formed part precision height, and surfacing is smooth, and dense internal organization and crystal grain are tiny, and mechanical property is good.The Semi-Solid Metals Forming technology mainly contains thixotropic forming and two kinds of technologies of rheological molding.Thixotropic forming according to the product size blanking, reheats semi-solid temperature after being meant the semi solid slurry cooled and solidified being become blank again, forms processing then.Rheological molding is directly to carry out semi-solid processing under the condition of its semi-solid temperature of maintenance through stirring the semi solid slurry that obtains.Present semi-solid-state metal thixotropic forming technology dominate.
The little thixotropic forming of semi-solid-state metal is the technology that little shaping combines with the semi-solid-state metal thixotropic forming, and this technology can combine with traditional Metal Forming technology, and its carrier is exactly a micro-forming device.At present, comprehensive not enough and deep for the research of the little thixotropic forming of semi-solid-state metal, also just limited research to micro-forming device, therefore still do not set up the design theory of relevant semi-solid-state metal micro-forming device aspect comparison system.In order to realize the industrialization of the little thixotropic forming technology of semi-solid-state metal, thereby provide a kind of in enormous quantities, high efficiency and processing technology cheaply of being fit to, just make that the design of micro-forming device and manufacturing are the keys that little forming technology is realized.
Chinese invention patent (application number 200810162180) discloses a kind of forming metal micro-thixotropy in semi-solid state assistant by supersonic vibration method and device.This device is provided with the counterdie electric heater in the lower end of counterdie, and counterdie is connected with ultrasonic amplitude transformer, and the counterdie thermocouple is installed in counterdie, the upper end of drift is connected with patrix, the patrix upper end is provided with the patrix electric heater, and patrix is connected with depression bar, and the patrix thermocouple is installed in the patrix.This device has been avoided in little process defectives such as shrinkage cavity, has improved the little thixotropic forming effect of semi-solid-state metal, but can cause the difficulty of the demoulding, influences production efficiency.
Chinese invention patent (application number 200710087193.9) discloses a kind of mould with independent heating and automatic demoulding functions.This mould is installed heater in upper die and lower die, the pickoff device also is housed in the mould, resets and locate pull bar and back-moving spring.This mould has independently heats and the function of automatic demoulding, but only can be used for injection mo(u)lding, can not be used for the little thixotropic forming of semi-solid-state metal.
Summary of the invention
The object of the present invention is to provide the little thixotropic forming device of a kind of semi-solid-state metal with automatic demoulding mechanism, solved in the little thixotropic forming process of semi-solid-state metal can't the demoulding problem, different moulds is installed, be used for processing the part of difformity and size.
The technical solution used in the present invention is:
Patrix of the present invention upper end is connected with the patrix connecting rod by screw, the patrix connecting rod is connected with press crown, first heating rod is installed in the centre bore of patrix and patrix connecting rod, the patrix that is positioned at the first heating rod lower end is installed first thermocouple, the patrix connecting rod places the loading and unloading material plate hole, and the loading and unloading material plate is connected with following stripper with nut with pull bar; Above forcing press, counterdie places pressing plate to base plate by bolting, and pressing plate is connected with base plate by screw; The upper end of counterdie is installed in down in the discharging plate hole, and second thermocouple is installed in the upper end of stripper counterdie under being arranged in; Second heating rod and packing ring place the centre bore of counterdie, and heating rod is placed in above the packing ring, and sleeve is embedded in down between stripper and the counterdie; Sample is placed on the counterdie upper surface; The upper die and lower die coaxial line is installed.
Described counterdie upper surface has circular hole or array of circular apertures.
The beneficial effect that the present invention has is:
(1) solved in the little thixotropic forming process of semi-solid-state metal can't the demoulding problem, improved production efficiency; (2) different moulds up and down can be installed in this device, be used for processing the part of difformity and size, can reuse, enlarge the scope of application of mould, reduce the cost of equipment effectively.
Described device can be used for the machining shape part different with size, can be applied to produce the reaction carriers of the self-heating type alcohol reforming hydrogen production micro passage reaction of being with the micro-boss array structure.
Description of drawings
Fig. 1 is an assembly structure schematic diagram of the present invention (before the thixotropic forming).
Fig. 2 is an assembly structure schematic diagram of the present invention (in the thixotropic forming).
Fig. 3 is an assembly structure schematic diagram of the present invention (behind the thixotropic forming).
Fig. 4 is the vertical view of the patrix of this device.
Fig. 5 is the A-A cutaway view of Fig. 4.
Fig. 6 is the vertical view of the counterdie of device.
Fig. 7 is the A-A cutaway view of Fig. 6.
Fig. 8 is the B-B cutaway view of Fig. 6.
Among the figure: 1. patrix connecting rod, 2. nut, 3. loading and unloading material plate, 4. pull bar, 5. screw, 6. first heating rod, 7. first thermocouple, 8. patrix, 9. sample, 10. sleeve, 11. second thermocouple, 12. times strippers, 13. counterdies, 14. second heating rod, 15. pressing plates, 16. packing rings, 17. base plate, 18. screws, 19. bolts.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, patrix of the present invention 8 upper ends are connected with patrix connecting rod 1 by screw 5, patrix connecting rod 1 is connected with press crown, first heating rod 6 is installed in the centre bore of patrix 8 and patrix connecting rod 1, the patrix 8 that is positioned at first heating rod, 6 lower ends is installed first thermocouple 7, patrix connecting rod 1 places loading and unloading material plate 3 holes, and loading and unloading material plate 3 usefulness pull bars 4 are connected with following stripper 12 with nut 2; Base plate 17 is fixed in above the forcing press by bolt 19, and counterdie 13 places pressing plate 15, and pressing plate 15 is connected with base plate 17 by screw 18; The upper end of counterdie 13 is installed in down in stripper 12 holes, and second thermocouple 11 is installed in the upper end of stripper 12 counterdies 13 under being arranged in; Second heating rod 14 and packing ring 16 place the centre bore of counterdie 12, and heating rod 14 is placed in above the packing ring 16, and sleeve 9 is embedded in down between stripper 12 and the counterdie 13; Sample 9 is placed on the counterdie upper surface; Patrix 8 and counterdie 13 coaxial lines are installed.
The middle part of described patrix 8 processes deep hole, is used to place first heating rod 6; Aperture is opened in the side of patrix 8, is used to place first thermocouple 7; Counterdie 13 adopts hot die steel H13 to make, and needs Quenching Treatment.
Described counterdie 13 upper surfaces have circular hole or array of circular apertures; And the counterdie internal openings, being used to place second heating rod and packing ring, aperture is also opened in the counterdie end, is used to place second thermocouple; Counterdie adopts the manufacturing of H13 hot die steel, and needs Quenching Treatment.
It is high that the upper surface of the lower surface of described patrix 8 and counterdie 13 and the precision of little circular hole interior surface are wanted.Help reducing the frictional force in the forming process.
Described sleeve 10 is wanted to embed between following stripper 12 and the counterdie 13, when needing to change counterdie when the processing different workpieces, can process corresponding sleeve, require the size of sleeve endoporus consistent, make sleeve can place counterdie and following stripper with the counterdie end.
Described counterdie 13, packing ring 16 and pressing plate 15, the groove of same size will be left in their bottom, and the lead of being convenient to second heating rod 14 is drawn.
Described patrix 8, counterdie 13, sleeve 10 and packing ring 16 adopt the manufacturing of H13 hot die steel, and nut 2, screw 5 and bolt 19 adopt standard component, and remaining parts all adopts No. 45 steels to make.
Described sample 9 can adopt semi-solid-state metal, is about to sample 9 and is processed into semisolid, carries out little thixotropic forming again.
The specific implementation process of this device is as follows:
(1) as shown in Figure 1, utilize patrix first heating rod 6 and 14 pairs of moulds of counterdie second heating rod to heat earlier, utilize patrix first thermocouple 7 and counterdie second thermocouple 11 to measure the temperature of patrix 8 and counterdie 13 respectively in real time in the process of heating.Patrix first heating rod 6, counterdie second heating rod 13, patrix first thermocouple 7 and counterdie second thermocouple 11 are linked to each other with the multichannel temperature controller, realize the temperature of patrix 8 and counterdie 13 is carried out real-time Detection ﹠ Controling by changing the control parameter, thereby obtain accurate little thixotropic forming temperature conditions.
(2) as shown in Figure 1, sample 9 adopted electromagnetic induction heater that sample 9 is heated, and is heated to the semi-solid temperature interval before the upper surface that places counterdie 13.Sample 9 can be obtained by common semi-solid alloy processing such as A356 aluminium alloys.
(3) as shown in Figure 1, when patrix 8 and counterdie 13 reach preset temperature, this moment, sample 9 also was heated to semisolid, just sample 9 can be held on the upper surface of counterdie 13.The starting pressure machine is begun to carry out the little thixotropic forming processing of semisolid by patrix 8 and 13 pairs of samples of counterdie 9 by programme controlled forcing press.
(4) as shown in Figure 2, little thixotropic forming stops the heating to patrix 8 and counterdie 13, forcing press pressurize a period of time after finishing.
(5) as shown in Figure 3, rise press crown, patrix connecting rod 1 is being with patrix 8 up, when patrix connecting rod 1 with after loading and unloading material plate 3 contacts, it is up together to drive loading and unloading material plate 3, this at present stripper 12 along with up, thereby drive sleeve 10 motions, because sleeve 10 belongs to interference fit with following stripper 12 and counterdie 13 belongs to matched in clearance, sleeve 10 is pulled out the sample 9 in the counterdie 13, finishes demoulding action.
(6) repeat above-mentioned step, can realize continuous processing.
(7) need to prove, if the workpiece of processing difformity and size, only need do counterdie 13 and sleeve 10 again, should guarantee that counterdie 13 can place the pressing plate 15 and the following stripper 12 of existing apparatus, will guarantee that also sleeve 10 can embed between counterdie 13 and the following stripper 12.Can realize the repeated use of this device like this, reduce the production cost of equipment.
Claims (2)
1. little thixotropic forming device of the semi-solid-state metal with automatic demoulding mechanism, it is characterized in that: patrix (8) upper end is connected with patrix connecting rod (1) by screw (5), patrix connecting rod (1) is connected with press crown, first heating rod (6) is installed in the centre bore of patrix (8) and patrix connecting rod (1), the patrix (8) that is positioned at first heating rod (6) lower end is installed first thermocouple (7), patrix connecting rod (1) places loading and unloading material plate (3) hole, and loading and unloading material plate (3) is connected with following stripper (12) with nut (2) with pull bar (4); Base plate (17) is fixed in above the forcing press by bolt (19), and counterdie (13) places pressing plate (15), and pressing plate (15) is connected with base plate (17) by screw (18); The upper end of counterdie (13) is installed in down in stripper (12) hole, and second thermocouple (11) is installed in the upper end of stripper (12) counterdie (13) under being arranged in; Second heating rod (14) and packing ring (16) place the centre bore of counterdie (12), and heating rod (14) is placed in above the packing ring (16), and sleeve (9) is embedded in down between stripper (12) and the counterdie (13); Sample (9) is placed on the counterdie upper surface; Patrix (8) and counterdie (13) coaxial line are installed.
2. the little thixotropic forming device of a kind of semi-solid-state metal with automatic demoulding mechanism according to claim 1 is characterized in that: described counterdie (13) upper surface has circular hole or array of circular apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110113152 CN102228942B (en) | 2011-04-27 | 2011-04-27 | Semi-solid metal micro-thixoforming device with automatic mould emptier |
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| CN 201110113152 CN102228942B (en) | 2011-04-27 | 2011-04-27 | Semi-solid metal micro-thixoforming device with automatic mould emptier |
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| CN102228942B CN102228942B (en) | 2013-04-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581164A (en) * | 2012-02-20 | 2012-07-18 | 浙江大学 | Separated type semisolid metal micro-thixotropic shaping device with upper and lower demolding mechanisms |
| CN103273678A (en) * | 2013-05-31 | 2013-09-04 | 浙江大学 | Bi-directional powder pressing forming device capable of demoulding automatically |
| CN104588612A (en) * | 2014-12-30 | 2015-05-06 | 北京科技大学 | High-melting-point alloy thixoforming device and forming process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593539A (en) * | 2018-05-21 | 2018-09-28 | 崇州天智轻量化制造有限公司 | A kind of contact metal semi-solid thixotropic behavior measuring device and its measurement method |
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| EP0181269A1 (en) * | 1984-11-09 | 1986-05-14 | Esswein S.A. | Press tool with processing parts exchangeable while under the press |
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| EP0181269A1 (en) * | 1984-11-09 | 1986-05-14 | Esswein S.A. | Press tool with processing parts exchangeable while under the press |
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| CN101406925A (en) * | 2008-11-18 | 2009-04-15 | 浙江大学 | Method for device for forming metal micro-thixotropy in semi-solid state assistant by supersonic vibration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581164A (en) * | 2012-02-20 | 2012-07-18 | 浙江大学 | Separated type semisolid metal micro-thixotropic shaping device with upper and lower demolding mechanisms |
| CN103273678A (en) * | 2013-05-31 | 2013-09-04 | 浙江大学 | Bi-directional powder pressing forming device capable of demoulding automatically |
| CN104588612A (en) * | 2014-12-30 | 2015-05-06 | 北京科技大学 | High-melting-point alloy thixoforming device and forming process |
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| CN102228942B (en) | 2013-04-17 |
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