CN202129413U - Molding machine - Google Patents
Molding machine Download PDFInfo
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- CN202129413U CN202129413U CN201020690153U CN201020690153U CN202129413U CN 202129413 U CN202129413 U CN 202129413U CN 201020690153 U CN201020690153 U CN 201020690153U CN 201020690153 U CN201020690153 U CN 201020690153U CN 202129413 U CN202129413 U CN 202129413U
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- pressing plate
- workbench
- oil cylinder
- rotating shaft
- arm
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Abstract
The utility model discloses a molding machine which comprises a machine body, a working table provided with a working plate, a rotating rocker arm provided with a pressing plate, a shaking device, a sand pressing device and a pattern drawing device, wherein, the working plate is arranged horizontally; a rotating shaft is arranged at the top of the machine body; the rotating rocker arm is fixedly arranged on the rotating shaft and can rotate along with the rotation of the rotating shaft; the working table is positioned at one side end of the machine body; and the rotating rocker arm can drive the pressing plate to enable the pressing plate to be positioned right above the working plate in the process of reciprocating rotation. By using the molding machine, the pressing plate can horizontally rotate along with the rotating rocker arm; when operations such as sand addition to a sand box, pattern drawing, and the like are conducted, the rotating rocker arm and the pressing plate can be firstly rotated at a certain angle to enable that no obstacle exists above the sand box, so that the pressing plate is not required be arranged at a high height; and when the operation of top pressure compaction is conducted, all that is needed is to rotate the pressing plate to a position above the working table and the sand box.
Description
Technical field
The utility model belongs to the sand molding technical field, is specifically related to a kind of moulding machine.
Background technology
The key link of sand casting is moulding, and the core of moulding machine is a sand densifying mechanism.Squeeze moulding machine is a kind of historical low speed sand densifying mechanism decades that has in being applied to produce, and its sand densifying mechanism is comparatively simple, but the lower and skewness of compacting gained sand mold compactability; The formed clamp plate compacting helps improving the model top and the uniformity of sand mold compactability all around; But generally speaking, squeeze mo(u)lding gained sand mold compactability is lower, and particularly the sand mold die joint degree of packing is on the low side, and gained foundry goods chi is lower in precision, and surface quality is poor.
Along with Foundry Production development and development of technology, jolt squeezing machine, high-pressure molding machine and corresponding sand densifying method thereof have appearred in succession.Air blast moulding machine and sand densifying method thereof are the Modeling Technology that closely develops rapidly during the last ten years and be used widely.But the position of moulding machine center platen can only up-down adjustment in the market, and it is comparatively loaded down with trivial details to regulate operation, reserves the operating space owing to need add operations such as sand, molding for sandbox; So need pressing plate be arranged on the higher height; Cause the height of traditional design machine higher, and, need thicker sheet material to process body because the roof pressure power of moulding machine when the roof pressure sandbox is bigger; So cause it highly higher, waste material and comparatively heavy.
The utility model content
The purpose of the utility model provides a kind of moulding machine that can effectively reduce whole height, save material.
The technical scheme that realizes the utility model purpose is: a kind of moulding machine comprises body, is provided with the workbench of working plate, the rotation rocking arm that is provided with pressing plate, shaking device, pressure sand device and die lifter; Said working plate is horizontally disposed with; Said body top is provided with a rotating shaft, and said rotation rocking arm is fixedly installed in this rotating shaft and can rotates along with the rotation of this rotating shaft; Said workbench is positioned at body one side, and said rotation rocking arm drives pressing plate and is located at directly over the working plate in doing reciprocal rotating process.
In the such scheme, said shaking device comprises a vertically disposed vibrations cylinder, and this vibrations cylinder piston links to each other with working plate and can drive working plate and does vertical tremor;
Said pressure sand device comprises two the roof pressure oil cylinders of separation in vibrations cylinder both sides, but each roof pressure oil cylinder piston jack-up workbench in extending upwardly growth process moves up it.
In the such scheme; Said die lifter comprises that two of separation workbench both sides are played mould oil cylinder, the gangbar that links to each other with the molding oil cylinder piston and are arranged on the molding fore-set on the gangbar, and said molding oil cylinder piston drives cross bar and molding fore-set synchronously and moves along the vertical direction in the process that moves back and forth.
In the such scheme, be provided with in the said body and be used for the driven rotary rocking arm and make the drive unit that level is back and forth rotated; Said drive unit comprises horizontally disposed driving oil cylinder and is fixed on the linearity tooth bar on the driving oil cylinder piston; The lower end of said rotating shaft is provided with the gear that matches with tooth bar; Said driving oil cylinder piston rotates through the rack drives gear when moving back and forth, and then the drive rotating shaft horizontally rotates with the rotation rocking arm.
In the such scheme; Said rotation rocking arm comprises the horizontally disposed turning arm that is fixed in the rotating shaft and links to each other with turning arm and vertically disposed crimping arm; Be provided with the pressing plate arrangement for adjusting height in the said crimping arm; Said pressing plate arrangement for adjusting height comprises the screw rod that is rotatedly connected with pressing plate and the screwed pipe that is positioned at the crimping arm, and the top of said screw rod is provided with runner, drives screw rod when runner rotates and in interior screwed pipe, rotates and then drive pressing plate and do and move up and down.
In the such scheme, the diapire of said turning arm is provided with spacing colluding, and said body is provided with the spacing location of matching of colluding over against a sidewall paneling of workbench and colludes, and said spacing colluding can be connected to said location and collude.
In the such scheme, be provided with the containing cavity that is positioned under the working plate in the said workbench, said vibrations cylinder and roof pressure oil cylinder are arranged in the said containing cavity; Said mould oil cylinder and cross bar are arranged on the work edge of table wall outside.
In the such scheme, the basic configuration of said gangbar is to lack rectangle on one side, and said gangbar is horizontally disposed with and is enclosed within the external side of workbench arm, and the quantity of molding fore-set is four, is symmetrically distributed in the workbench both sides in twos.
The utlity model has positive effect:
(1) in the utility model, said body top is provided with a rotating shaft, and said rotation rocking arm is fixedly installed in this rotating shaft and can rotates along with the rotation of this rotating shaft; Said workbench is positioned at body one side, and said rotation rocking arm drives pressing plate and is located at directly over the working plate in doing reciprocal rotating process.This kind structure makes pressing plate to do and horizontally rotate with the rotation rocking arm, when carrying out adding for sandbox operation such as sand, molding, can turn an angle rotation rocking arm and pressing plate earlier, makes the without hindrance thing in sandbox top, so need not pressing plate is arranged on high height; When carrying out the roof pressure compacting operation, go to workbench and sandbox top to pressing plate again and get final product.
(2) in the utility model, be provided with in the said body and be used for the driven rotary rocking arm and make the drive unit that level is back and forth rotated; Said drive unit comprises horizontally disposed driving oil cylinder and is fixed on the linearity tooth bar on the driving oil cylinder piston; The lower end of said rotating shaft is provided with the gear that matches with tooth bar; Said driving oil cylinder piston rotates through the rack drives gear when moving back and forth, and then the drive rotating shaft horizontally rotates with the rotation rocking arm.This kind driving device structure is rational simplification comparatively, compares with adopting motor-driven mechanism, effectively reduces cost.
(3) in the utility model; Said rotation rocking arm comprises the horizontally disposed turning arm that is fixed in the rotating shaft and links to each other with turning arm and vertically disposed crimping arm; Be provided with the pressing plate arrangement for adjusting height in the said crimping arm; Said pressing plate arrangement for adjusting height comprises the screw rod that is rotatedly connected with pressing plate and the screwed pipe that is positioned at the crimping arm, and the top of said screw rod is provided with runner, drives screw rod when runner rotates and in interior screwed pipe, rotates and then drive pressing plate and do and move up and down.This kind structure is comparatively simplified rationally, and it is comparatively convenient to regulate operation.
(4) in the utility model, the basic configuration of said gangbar is to lack rectangle on one side, and said gangbar is horizontally disposed with and is enclosed within the external side of workbench arm, and the quantity of molding fore-set is four, is symmetrically distributed in the workbench both sides in twos.This kind pattern drawing mechanism guarantees that effectively a plurality of molding fore-sets that are positioned at the workbench both sides move synchronously, avoid the useless mould that is molded as because of asynchronous.
Description of drawings
Fig. 1 is a kind of structural representation of utility model;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is that rotation rocking arm and pressing plate rotates a kind of view behind 90 degree in the moulding machine shown in Figure 2;
Fig. 4 be moulding machine shown in Figure 2 the roof pressure oil cylinder piston with the sandbox roof pressure on the working plate a kind of structural representation to pressing plate the time;
Fig. 5 is a moulding machine shown in Figure 2 at a kind of structural representation of molding oil cylinder piston during with sandbox cope jack-up.
Be labeled as shown in the accompanying drawing: body 1, rotating shaft 11, the location colludes 12, workbench 2, working plate 21, containing cavity 22, rotation rocking arm 3; Pressing plate 34, turning arm 31 spacingly colludes 311, crimping arm 32, pressing plate arrangement for adjusting height 33, screw rod 331, interior screwed pipe 332; Runner 333, shaking device 4, vibrations cylinder 41, vibrations cylinder piston 411 is pressed sand device 5, roof pressure oil cylinder 51, roof pressure oil cylinder piston 511; Die lifter 6 plays mould oil cylinder 61, molding oil cylinder piston 611, gangbar 62, molding fore-set 63, drive unit 7, driving oil cylinder 71; Driving oil cylinder piston 711, linearity tooth bar 72, gear 73, sandbox 8, sandbox bed die case 81, molding projection 82, cope 83.
The specific embodiment
(embodiment 1)
Fig. 1 to Fig. 5 has shown a kind of specific embodiment of the utility model, and wherein Fig. 1 is a kind of structural representation of utility model; Fig. 2 is that the A of Fig. 1 is to view; Fig. 3 is that rotation rocking arm and pressing plate rotates a kind of view behind 90 degree in the moulding machine shown in Figure 2; Fig. 4 be moulding machine shown in Figure 2 the roof pressure oil cylinder piston with the sandbox roof pressure on the working plate a kind of structural representation to pressing plate the time; Fig. 5 is a moulding machine shown in Figure 2 at a kind of structural representation of molding oil cylinder piston during with sandbox cope jack-up.
Present embodiment is a kind of moulding machine, sees Fig. 1 to Fig. 5, comprises body 1, is provided with the workbench 2 of working plate 21, the rotation rocking arm 3 that is provided with pressing plate 34, shaking device 4, presses sand device 5 and die lifter 6; Said working plate 21 is horizontally disposed with.
Said body 1 top is provided with a rotating shaft 11, and said rotation rocking arm 3 is fixedly installed in this rotating shaft 11 and can rotates along with the rotation of this rotating shaft 11; Said workbench 2 is positioned at body 1 one sides, and said rotation rocking arm 3 drives pressing plate 34 and is located at directly over the working plate 21 in doing reciprocal rotating process.
Said shaking device 4 comprises a vertically disposed vibrations cylinder 41, and these vibrations cylinder 41 pistons 411 link to each other with working plate 21 and can drive working plate 21 and do vertical tremor; Said pressure sand device 5 comprises two the roof pressure oil cylinders 51 of separation in vibrations cylinder 41 both sides, but each roof pressure oil cylinder piston 511 jack-up workbench 2 in extending upwardly growth process moves up it.
Said die lifter 6 comprises that two of separation workbench 2 both sides are played mould oil cylinder 61, the gangbar 62 that links to each other with molding oil cylinder piston 611 and are arranged on the molding fore-set 63 on the gangbar 62, and said molding oil cylinder piston 611 drives cross bar and molding fore-set 63 synchronously and moves along the vertical direction in the process that moves back and forth.
Be provided with the containing cavity 22 that is positioned under the working plate 21 in the said workbench 2, said vibrations cylinder 41 is arranged in the said containing cavity 22 with roof pressure oil cylinder 51; Said mould oil cylinder 61 is arranged on the wall outside, workbench 2 limit with cross bar.
In the present embodiment, the basic configuration of said gangbar 62 is to lack rectangle on one side, and said gangbar 62 is horizontally disposed with and is enclosed within the external side of workbench 2 arms, and the quantity of molding fore-set 63 is four, is symmetrically distributed in workbench 2 both sides in twos.
Be provided with in the said body 1 and be used for the drive unit 7 that driven rotary rocking arm 3 is done the reciprocal rotation of level; Said drive unit 7 comprises horizontally disposed driving oil cylinder 71 and is fixed on the linearity tooth bar 72 on the driving oil cylinder piston 711; The lower end of said rotating shaft 11 is provided with the gear 73 that matches with tooth bar 72; Said driving oil cylinder piston 711 rotates through tooth bar 72 driven gears 73 when moving back and forth, and then drive rotating shaft 11 horizontally rotates with rotation rocking arm 3.
Said rotation rocking arm 3 comprises the horizontally disposed turning arm 31 that is fixed in the rotating shaft 11 and links to each other with turning arm 31 and vertically disposed crimping arm 32; Be provided with pressing plate 34 arrangement for adjusting height 33 in the said crimping arm 32; Said pressing plate 34 arrangement for adjusting height comprise screw rod 331 that is rotatedly connected with pressing plate 34 and the screwed pipe 332 that is positioned at crimping arm 32; The top of said screw rod 331 is provided with runner 333, drives screw rod 331 when runner 333 rotates and in interior screwed pipe 332, rotates and then drive pressing plate 34 and do and move up and down.
The diapire of said turning arm 31 is provided with and spacingly colludes 311, and said body 1 is provided with spacing 311 location of matching of colluding over against a sidewall paneling of workbench 2 and colludes 12, saidly spacingly colludes 311 and can be connected to said location and collude on 12.
The working method of present embodiment: see shown in Figure 3ly, at first turn to position shown in Figure 3 to rotation rocking arm 3 and pressing plate 34, will comprise that then the sandbox 8 of bed die case 81 and cope 83 places on the workbench 21, in sandbox 8, fill it up with molding sand then.Then shake steam-cylinder piston 411 quick jack-up and fall, workbench 2 and sandbox 8 are formed fast vibration, with stocky molding sand.
See shown in Figure 4ly, rotation rocking arm 3 and pressing plate 34 turn an angle, make pressing plate 34 be positioned at workbench 2 and sandbox 8 directly over.Roof pressure oil cylinder piston 511 is elongation upwards, workbench 2 and sandbox 8 jack-up upwards, until roof pressure on pressing plate 34.
See shown in Figure 5, behind the compacting molding sand, roof pressure oil cylinder piston 511 homings, sandbox 8 and workbench 2 also return back to original position, the rotation rocking arm 3 turn an angle again, make pressing plate 34 no longer be positioned at sandbox 8 tops; Molding oil cylinder piston 611 upwards elongations this moment drive on four molding fore-sets 63 synchronously through gangbar 62 and to move, on four the molding projections 82 of molding fore-set 63 roof pressures in cope 83 both sides, thereby cope 83 jack-up from the bed die case 81; After this, remove cope 83 earlier, remove bed die case 81 again, so far, accomplish a workflow.
Present embodiment has positive effect:
(1) in the present embodiment, said body 1 top is provided with a rotating shaft 11, and said rotation rocking arm 3 is fixedly installed in this rotating shaft 11 and can rotates along with the rotation of this rotating shaft 11; Said workbench 2 is positioned at body 1 one sides, and said rotation rocking arm 3 drives pressing plate 34 and is located at directly over the working plate 21 in doing reciprocal rotating process.This kind structure makes pressing plate to do and horizontally rotate with the rotation rocking arm, when carrying out adding for sandbox operation such as sand, molding, can turn an angle rotation rocking arm and pressing plate earlier, makes the without hindrance thing in sandbox top, so need not pressing plate is arranged on high height; When carrying out the roof pressure compacting operation, go to workbench and sandbox top to pressing plate again and get final product.
(2) in the present embodiment, be provided with in the said body 1 and be used for driven rotary rocking arm 3 and make the drive unit 7 that level is back and forth rotated; Said drive unit 7 comprises horizontally disposed driving oil cylinder 71 and is fixed on the linearity tooth bar 72 on the driving oil cylinder piston 711; The lower end of said rotating shaft 11 is provided with the gear 73 that matches with tooth bar 72; Said driving oil cylinder piston 711 rotates through tooth bar 72 driven gears 73 when moving back and forth, and then drive rotating shaft 11 horizontally rotates with rotation rocking arm 3.This kind driving device structure is rational simplification comparatively, compares with adopting motor-driven mechanism, effectively reduces cost.
(3) in the present embodiment; Said rotation rocking arm 3 comprises the horizontally disposed turning arm 31 that is fixed in the rotating shaft 11 and links to each other with turning arm 31 and vertically disposed crimping arm 32; Be provided with pressing plate 34 arrangement for adjusting height 33 in the said crimping arm 32; Said pressing plate 34 arrangement for adjusting height comprise screw rod 331 that is rotatedly connected with pressing plate 34 and the screwed pipe 332 that is positioned at crimping arm 32; The top of said screw rod 331 is provided with runner 333, drives screw rod 331 when runner 333 rotates and in interior screwed pipe 332, rotates and then drive pressing plate 34 and do and move up and down.This kind structure is comparatively simplified rationally, and it is comparatively convenient to regulate operation.
(4) in the present embodiment, the basic configuration of said gangbar 62 is to lack rectangle on one side, and said gangbar 62 is horizontally disposed with and is enclosed within the external side of workbench 2 arms, and the quantity of molding fore-set 63 is four, is symmetrically distributed in workbench 2 both sides in twos.This kind pattern drawing mechanism guarantees that effectively a plurality of molding fore-sets that are positioned at the workbench both sides move synchronously, avoid the useless mould that is molded as because of asynchronous.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the embodiment of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection domain of the utility model.
Claims (8)
1. moulding machine comprises body (1), is provided with the workbench (2) of working plate (21), the rotation rocking arm (3) that is provided with pressing plate (34), shaking device (4), presses sand device (5) and die lifter (6); Said working plate (21) is horizontally disposed with; It is characterized in that:
Said body (1) top is provided with a rotating shaft (11), and said rotation rocking arm (3) is fixedly installed on this rotating shaft (11) and goes up and can rotate along with the rotation of this rotating shaft (11); Said workbench (2) is positioned at body (1) one side, and said rotation rocking arm (3) drives pressing plate (34) and is located at directly over the working plate (21) in doing reciprocal rotating process.
2. moulding machine according to claim 1 is characterized in that: said shaking device (4) comprises a vertically disposed vibrations cylinder (41), and this vibrations cylinder (41) piston (411) links to each other with working plate (21) and can drive working plate (21) and does vertical tremor;
Said pressure sand device (5) comprises two the roof pressure oil cylinders (51) of separation in vibrations cylinder (41) both sides, each roof pressure oil cylinder piston (511) but in extending upwardly growth process jack-up workbench (2) it is moved up.
3. moulding machine according to claim 2; It is characterized in that: said die lifter (6) comprises that two of separation workbench (2) both sides are played mould oil cylinder (61), the gangbar (62) that links to each other with molding oil cylinder piston (611) and are arranged on the molding fore-set (63) on the gangbar (62), and said molding oil cylinder piston (611) drives cross bar and molding fore-set (63) synchronously and moves along the vertical direction in the process that moves back and forth.
4. moulding machine according to claim 3 is characterized in that: be provided with in the said body (1) and be used for driven rotary rocking arm (3) and make the drive unit (7) that level is back and forth rotated; Said drive unit (7) comprises horizontally disposed driving oil cylinder (71) and is fixed on the linearity tooth bar (72) on the driving oil cylinder piston (711); The lower end of said rotating shaft (11) is provided with the gear (73) that matches with tooth bar (72); Said driving oil cylinder piston (711) rotates through tooth bar (72) driven gear (73) when moving back and forth, and then drives rotating shaft (11) and rotate rocking arm (3) and horizontally rotate.
5. moulding machine according to claim 3; It is characterized in that: said rotation rocking arm (3) comprises the horizontally disposed turning arm (31) that is fixed in the rotating shaft (11) and links to each other and vertically disposed crimping arm (32) with turning arm (31); Be provided with pressing plate (34) arrangement for adjusting height (33) in the said crimping arm (32); Said pressing plate (34) arrangement for adjusting height comprises screw rod (331) that is rotatedly connected with pressing plate (34) and the screwed pipe (332) that is positioned at crimping arm (32); The top of said screw rod (331) is provided with runner (333), and runner (333) drives screw rod (331) and in interior screwed pipe (332), rotates and then drive pressing plate (34) and do and move up and down when rotating.
6. moulding machine according to claim 5; It is characterized in that: the diapire of said turning arm (31) is provided with spacing colluding (311); Said body (1) is provided with the location of matching with spacing colluding (311) over against a sidewall paneling of workbench (2) and colludes (12), and said spacing colluding (311) can be connected to said location and collude on (12).
7. moulding machine according to claim 3 is characterized in that: be provided with the containing cavity (22) that is positioned under the working plate (21) in the said workbench (2), said vibrations cylinder (41) and roof pressure oil cylinder (51) are arranged in the said containing cavity (22); Said mould oil cylinder (61) and cross bar are arranged on the wall outside, workbench (2) limit.
8. moulding machine according to claim 7; It is characterized in that: the basic configuration of said gangbar (62) is to lack rectangle on one side; Said gangbar (62) is horizontally disposed with and is enclosed within the external side of workbench (2) arm; The quantity of molding fore-set (63) is four, is symmetrically distributed in workbench (2) both sides in twos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020690153U CN202129413U (en) | 2010-12-30 | 2010-12-30 | Molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020690153U CN202129413U (en) | 2010-12-30 | 2010-12-30 | Molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202129413U true CN202129413U (en) | 2012-02-01 |
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ID=45518200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020690153U Expired - Fee Related CN202129413U (en) | 2010-12-30 | 2010-12-30 | Molding machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN202129413U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059323A (en) * | 2010-12-30 | 2011-05-18 | 李苏文 | Molding machine |
| CN103273015A (en) * | 2013-05-13 | 2013-09-04 | 山东建筑大学 | Single-column sodium silicate-bonded sand molding machine and molding technology thereof |
| CN103658557A (en) * | 2012-09-06 | 2014-03-26 | 戴辉 | Molding machine of steel ball sand mould |
| CN103964197A (en) * | 2013-01-25 | 2014-08-06 | 丽水明大机械科技有限公司 | Self-rotating clamp body conveying system |
| CN108160947A (en) * | 2018-01-02 | 2018-06-15 | 繁昌县金牛机械铸造有限责任公司 | A kind of automatic sand mold casting device |
| CN113134575A (en) * | 2021-04-15 | 2021-07-20 | 芜湖市容川机电科技股份有限公司 | Semi-automatic molding device for gear box body casting blank |
-
2010
- 2010-12-30 CN CN201020690153U patent/CN202129413U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059323A (en) * | 2010-12-30 | 2011-05-18 | 李苏文 | Molding machine |
| CN103658557A (en) * | 2012-09-06 | 2014-03-26 | 戴辉 | Molding machine of steel ball sand mould |
| CN103964197A (en) * | 2013-01-25 | 2014-08-06 | 丽水明大机械科技有限公司 | Self-rotating clamp body conveying system |
| CN103273015A (en) * | 2013-05-13 | 2013-09-04 | 山东建筑大学 | Single-column sodium silicate-bonded sand molding machine and molding technology thereof |
| CN103273015B (en) * | 2013-05-13 | 2015-05-20 | 山东建筑大学 | Single-column sodium silicate-bonded sand molding machine and molding technology thereof |
| CN108160947A (en) * | 2018-01-02 | 2018-06-15 | 繁昌县金牛机械铸造有限责任公司 | A kind of automatic sand mold casting device |
| CN113134575A (en) * | 2021-04-15 | 2021-07-20 | 芜湖市容川机电科技股份有限公司 | Semi-automatic molding device for gear box body casting blank |
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| 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: 20120201 Termination date: 20141230 |
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| EXPY | Termination of patent right or utility model |