CN2745671Y - Variable stroke short cylinder bidirection synchronous extrusion device - Google Patents
Variable stroke short cylinder bidirection synchronous extrusion device Download PDFInfo
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- CN2745671Y CN2745671Y CN 200420059645 CN200420059645U CN2745671Y CN 2745671 Y CN2745671 Y CN 2745671Y CN 200420059645 CN200420059645 CN 200420059645 CN 200420059645 U CN200420059645 U CN 200420059645U CN 2745671 Y CN2745671 Y CN 2745671Y
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Abstract
The utility model relates to a variable stroke short cylinder bidirection synchronous extrusion device, comprising an extrusion short cylinder, a boost short cylinder, a lift cylinder, a piston rod connected in series penetrating three cylinders, a worktable on the upper end of a lift piston rod, a lower extrusion device on the upper part of the worktable, a positive / negative pressure driving system and a pipeline system communicated the boost short cylinder and the lower extrusion device. The lower part of the piston rod connected in series is respectively fixed with an extrusion piston and a boost piston, and the upper part is provided with a locking slot; a locking device is fixed in the inner side on the lower end of the lift piston rod fixed on a lift piston. The utility model has the advantages of simple structure, light weight, low cost, energy saving when running, no vibration and noise and dust, raised molding productivity and sand mold compactability and uniformity by synchronous extrusion top and bottom, accurate cast size, smooth surface and few waste.
Description
Technical field
The utility model relates to a kind of machinery manufacturing industry sand casting mo(u)lding equipment, specifically is the short cylinder bi-directional synchronization of a kind of route-variable pressurizing unit.
Background technology
Industrially developed country produces foundry goods with the tidal stencils machine moulding and accounts for more than 90%, for reaching the high compact rate of molding of sand mold, moulding machine develops over half a century to high static pressure, prolongation extrusion time, continue to increase the cylinder footpath or use serial cylinders, making lifting---squeeze cylinder increases at double, and mechanism's heaviness, too fat to move, technological requirement crush stroke are 1/3～1/4 of lifting stroke, lifting force is 1/7～1/10 of an extruding force, and manufacturing and waste material in service and the energy are serious.There is a kind of hollow sleeve tubular type gas-liquid damping cylinder (" mechanical design handbook " third edition volume 4P21-36) to shorten 1/2 at most for shortening the series connection cylinder because of the structural limitations stroke, adjust stroke and will open oil cylinder, it advances, backhaul all can only be first quick and back slow, can only damping can not supercharging, can not satisfy the formative technology requirement; In the world for many years for obtaining more High Voltage, use hydraulic-driven lifting---squeeze cylinder, but because difficulties such as Sealing Technologies, manufacturing cost improves greatly, again because high static pressure pressure is big, a complete set of equipment increases the weight of also to increase greatly to be made and operating cost, and High Voltage destroys molding sand quality, seriously reduces the sand mold gas permeability, and high pressure forms very atmosphere impatency power during extruding, make sand mold be difficult to consolidation and delivery and make distortion of molding box and bounce-back, sand mold and foundry goods precision are low, not bright and clean, waste product is many.In the world moulding machine production casting mold quality (high compact rate of molding, highly-breathable etc.) and large-duty unprecedented harsh requirement there is not good plan (beautiful " MODERNCASTING " Sep.2003 P.35) so far to current.
Summary of the invention
The purpose of this utility model is to provide a kind of structural reduction, compactness, light weight, productivity ratio height, the short cylinder bi-directional synchronization of the low route-variable of being convenient to promote of cost pressurizing unit, it not only the moulding compact rate of molding high and evenly, good permeability, foundry goods is accurate, bright and clean but also this device running is energy-conservation, noiseless, dust and scatter sand.
The purpose of this utility model realizes by following technical scheme: the short cylinder bi-directional synchronization of a kind of route-variable pressurizing unit, comprise by the short cylinder of extruding, the short cylinder of supercharging on the short cylinder of extruding, lifting cylinder on the short cylinder of supercharging, the short cylinder of extruding, tandem piston bar in short cylinder of supercharging and the lifting cylinder, lifting piston in the lifting cylinder, the fixing upper end of lifting piston rod dress workbench on the lifting piston, pressurizing unit is set in the workbench top, malleation (air compressor machine) system and negative pressure (vavuum pump) system that drive complete unit constitute, short cylinder piston of its described tandem piston bar bottom fixed press and the short cylinder piston of supercharging, the locking groove is established in the upper end, the inboard dress of described lifting piston-rod lower end locking arrangement, described workbench is uncovered along the week sealing on the hollow, divide into gas port, electricity consumption magnetic pressure difference limen connects with negative pressure system, described pressurizing unit down comprises by pushing cylinder, contact base and the interchangeable multiple contact that is fixed on below the contact base constitute, short cylinder of described supercharging and following pressurizing unit are by the band flow velocity, the pipe-line system of pressure controlling device connects, its transmission medium can be oil or positive and negative calming the anger, and short cylinder of described extruding and lifting cylinder are on it, following gas port is connected with positive pressure system and negative pressure system by reversal valve.
The short cylinder bi-directional synchronization of route-variable of the present utility model pressurizing unit, wherein said locking arrangement cooperates with tandem piston bar upper end locking groove, short cylinder of lifting cylinder and extruding and the short cylinder of supercharging is constituted the cylinder of connecting, to increase versatility and flexibility.Described locking arrangement can be used air pressure, hydraulic pressure, electromagnetism or driven by power, and described tandem piston bar upper end locking groove can be established several.
The short cylinder bi-directional synchronization of route-variable of the present utility model pressurizing unit, described multiple contact is made of different area and shape, waters the special-shaped contact of a glass mould, rising head rod, the gentle vent needle of core rod comprising band, to improve complete machine operating efficiency, productivity ratio.
The short cylinder bi-directional synchronization of route-variable of the present utility model pressurizing unit, the described contact base that waters glass mould and fixedly water glass mould be for the entity in sediment outflow road, with raising sand mold compactability and surface smoothness and stop to scatter loose sand.
The short cylinder bi-directional synchronization of route-variable of the present utility model pressurizing unit, described pressurizing unit down can be many pushing cylinders, multiple contact seat and multiple contact, also can be single pushing cylinder or two pushing cylinder, single contact base or two contact base and single contact or two contact, the multi-functional feature of contact is constant, to improve versatility.
The short cylinder bi-directional synchronization of route-variable of the present utility model pressurizing unit, when extruding with just, negative pressure acts on the series connection cylinder simultaneously, drive workbench and drive down the multiple contact of pressurizing unit and be synchronized with the movement fast in opposite directions and make working substance (sand mold) be subjected to high speed impact power and consolidation by the short cylinder of supercharging, gas port is taken out negative pressure under the workbench simultaneously, promote molding sand more consolidation and increase sand mold air penetrability, make the sand mold compact rate of molding high and even, good permeability, and gas-tight resistance and the type wall of having eliminated traditional quiet high-pressure extrusion rebound, the foundry goods precision height of producing, bright and clean, fine and close, waste product is few, this apparatus structure is brief, compact, light weight, the productivity ratio height, cost is low, highly versatile, noiseless in the running, dust and scatter sand, energy-conservation and be convenient to maintaining.
Description of drawings
Fig. 1 is pressurizing unit structural representation of the short cylinder bi-directional synchronization of the utility model route-variable and main transmission control principle figure;
Fig. 2 is single cylinder pressure, single contact base and single contact schematic diagram;
Fig. 3 be entity do not have a sediment outflow road water glass mould and contact base and sprue mould location diagram;
Fig. 4 be the high static pressure moulding band sediment outflow road used always contact base, water glass mould and down gate mould (" sand casting process and frock design " 2 editions Beijing printing house P469 in 1989);
The specific embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
The short cylinder bi-directional synchronization of route-variable of the present utility model as shown in Figure 1 pressurizing unit, comprise by the short cylinder 3 of extruding, the short cylinder 5 of supercharging above the short cylinder 3 of extruding, lifting cylinder 7 above the short cylinder 5 of supercharging, the short cylinder 3 of extruding, tandem piston bar 6 in short cylinder 5 of supercharging and the lifting cylinder 7, lifting piston 8 in the lifting cylinder 7, dress lifting piston rod 35 on the lifting piston 8, its upper end dress workbench 16, pressurizing unit 12 is set in workbench 16 tops, malleation (air compressor machine) system 24 and negative pressure (vavuum pump) system 23 that drive complete unit constitute, described short cylinder piston 1 of tandem piston bar 6 bottom fixed press and the short cylinder piston 4 of supercharging, locking groove 10 is established in tandem piston bar 6 upper ends, described lifting piston rod 35 lower ends inboard dress locking arrangement 9, described workbench 16 upper shed band seal grooves, 16 times gas ports 17 of workbench, electricity consumption magnetic pressure difference limen 18 connects with negative pressure system 23, described pressurizing unit down comprises by pushing cylinder 13, contact base 14 below the pushing cylinder 13 and the interchangeable multiple contacts 15 that are fixed on below the contact base 14 constitute, the pushing cylinder 13 of short cylinder 5 of described supercharging and hold-down devices 12 is by band flow velocity regulation device 19, the pipe-line system of pressure controlling device 32 connects, and the pipe-line system transmission medium can be oil or positive and negative calming the anger (Fig. 1 is exemplified as oil).The last gas port 2 of the short cylinder 3 of described extruding and last gas port 11 UNICOMs of lifting cylinder 7, the following gas port 25 footpath reversal valves 20 of the short cylinder 3 of extruding and following gas port 26 UNICOMs of lifting cylinder 7, footpath solenoid directional control valve 21 connects with positive pressure system 24 and connects with negative pressure system 23 through solenoid directional control valve 21 and reversal valve 22 respectively.Locking arrangement 9 cooperates with tandem piston bar 6 upper end locking grooves 10, and short cylinder 3 of lifting cylinder 7 and extruding and the short cylinder 5 of supercharging are constituted the cylinder of connecting.Locking arrangement 9 can be used air pressure, hydraulic pressure, electromagnetism or driven by power.Tandem piston bar 6 upper end locking grooves 10 can be established several (this Fig. 1 is exemplified as 2).Multiple contact 15 is made of different area and shape contact, waters the special-shaped contact of a glass mould, rising head rod, the gentle vent needle of core rod comprising band.Water glass mould 30 (Fig. 3) and be not with the sediment outflow road, comprise slidably on the down gate mould and template that fixedly down gate mould 31 contacts (Fig. 3) by elastomer 33, the contact base 14 that fixedly waters glass mould 30 does not have the sediment outflow road yet.(Fig. 4) for being with the gating pattern example in sediment outflow road.The upwards extruding and drive the short cylinder 5 of supercharging and carry hydraulic oils that multiple contact 15 push downwards to pushing cylinder 13 of the short cylinder 3 of extruding and lifting cylinder tandem drive workbench 16 realizes that bi-directional synchronization pushes; During the backhaul delivery, the short cylinder 5 of supercharging is subjected to 19 controls of flow velocity regulation device to realize damping.
Following pressurizing unit 12 can be many pushing cylinders, multiple contact seat and multiple contact (Fig. 1), also can be single pushing cylinder 27, single contact base 28 and single contact 29 (Fig. 2) or multiple contact, also can be two pushing cylinders, two contact base and two or multiple contact, its multi-functional feature be constant.
The utility model operation principle: use fluid dynamic theory, act on simultaneously with positive negative pressure, improve pressure reduction and improve piston movement speed, and form relative acceleration with the bi-directional synchronization motion working substance is therebetween executed ballistic work, its speed doubles stroke and reduces by half.Replace the conventional high-tension static pressure with the high speed impact dynamic pressure.The short cylinder bi-directional synchronization of route-variable of the present utility model pressurizing unit is that basic engineering forms with above-mentioned principle promptly.Positive negative pressure acts on series connection cylinder 3,5,7 simultaneously during extruding, drive workbench 16 and by the short cylinder 5 of supercharging by the road system drive hold-down devices 12 multiple contact 15 in opposite directions motion simultaneously and rapidly make sand mold be subjected to high impact forces and consolidation, simultaneously 16 times gas ports 17 of workbench are taken out negative pressure by electromagnetism valve for pressure difference 18 and are impelled sand mold more consolidation is even, and sand mold air penetrability height, and eliminated the gas-tight resistance of quiet high-pressure extrusion and remove and press back sandbox and the bounce-back of type wall, the foundry goods precision height of production, bright and clean, fine and close, waste product is few.This apparatus structure is brief, compact, light weight, the productivity ratio height, cost is low, highly versatile, noiseless in the running, dust and and scatter sand, energy-conservation and be convenient to maintaining.
Claims (8)
1. a route-variable is lacked cylinder bi-directional synchronization pressurizing unit, comprise by the short cylinder (3) of extruding, the short cylinder (5) of supercharging above the short cylinder of extruding (3), lifting cylinder (7) above the short cylinder of supercharging (5), the short cylinder (3) of extruding, tandem piston bar (6) in short cylinder (5) of supercharging and the lifting cylinder (7), lifting piston (8) in the lifting cylinder (7), lifting piston (8) is gone up fixedly lifting piston rod (35), lifting piston rod (35) upper end dress workbench (16), pressurizing unit (12) is set in workbench (16) top, malleation (air compressor machine) system (24) and negative pressure (vavuum pump) system (23) that drive complete unit constitute, it is characterized in that, short cylinder piston (1) of tandem piston bar (6) bottom fixed press and the short cylinder piston (4) of supercharging, locking groove (10) is established in tandem piston bar (6) upper end, described lifting piston rod (35) lower end inboard dress locking arrangement (9), be with seal groove around described workbench (16) upper shed, workbench (16) is divided into gas port (17), electricity consumption magnetic pressure difference limen (18) connects with negative pressure system (23), described pressurizing unit (12) down comprises by pushing cylinder (13), contact base (14) below the pushing cylinder (13) and be fixed on interchangeable multiple contact (15) formation below the contact base (14), the following gas port (25) of the short cylinder of described extruding (3) is gas port (26) UNICOM under reversal valve (20) and lifting cylinder (7), the last gas port (2) of the short cylinder of extruding (3) and last gas port (11) UNICOM of lifting cylinder (7), connect with positive pressure system (24) through solenoid directional control valve (21) respectively, connect with negative pressure system (23) through solenoid directional control valve (21) and reversal valve (22).
2. the short cylinder bi-directional synchronization of route-variable according to claim 1 pressurizing unit is characterized in that locking arrangement (9) cooperates with tandem piston bar (6) upper end locking groove (10), and short cylinder (3) of lifting cylinder (7) and extruding and the short cylinder of supercharging (5) are constituted the cylinder of connecting.
3. according to claim 1 and the short cylinder bi-directional synchronization of 2 described route-variables pressurizing unit, it is characterized in that the available air pressure of locking arrangement (9), hydraulic pressure, electromagnetism or driven by power.
4. the short cylinder bi-directional synchronization of route-variable according to claim 1 pressurizing unit is characterized in that the locking groove (10) of tandem piston bar (6) upper end can be established several.
5. the short cylinder bi-directional synchronization of route-variable according to claim 1 pressurizing unit is characterized in that multiple contact (15) is made of different area and shape contact, waters the special-shaped contact of a glass mould, rising head rod, the gentle vent needle of core rod comprising band.
6. according to claim 1 and the short cylinder bi-directional synchronization of 5 described route-variables pressurizing unit, it is characterized in that, water a glass mould (30) by not with the die body in sediment outflow road, in adorn one section down gate mould and spring constitutes, the flexible body in down gate mould lower end (33), the contact base (14) that fixedly waters a glass mould (30) is entity, no sediment outflow road (34).
7. the short cylinder bi-directional synchronization of route-variable according to claim 1 pressurizing unit, it is characterized in that, the short cylinder of described supercharging (5) is connected by the pipe-line system of being with flow velocity regulation device (19), pressure controlling device (32) with the pushing cylinder (13) of hold-down devices (12), the pipe-line system transmission medium can be oil or positive and negative calming the anger.
8. the short cylinder bi-directional synchronization of route-variable according to claim 1 pressurizing unit, it is characterized in that, following pressurizing unit (12) can be by many pushing cylinders, multiple contact seat and multiple contact, also can be by single contact (29) of single pushing cylinder (27), single contact base (28) and moulding or multiple contact (15), also can be made of two pushing cylinders, two contact base and two or multiple contact, contact (15), (29) multi-functional feature are constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420059645 CN2745671Y (en) | 2004-05-21 | 2004-05-21 | Variable stroke short cylinder bidirection synchronous extrusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420059645 CN2745671Y (en) | 2004-05-21 | 2004-05-21 | Variable stroke short cylinder bidirection synchronous extrusion device |
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| Publication Number | Publication Date |
|---|---|
| CN2745671Y true CN2745671Y (en) | 2005-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420059645 Expired - Fee Related CN2745671Y (en) | 2004-05-21 | 2004-05-21 | Variable stroke short cylinder bidirection synchronous extrusion device |
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| CN (1) | CN2745671Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665631A (en) * | 2016-01-26 | 2016-06-15 | 机械科学研究总院先进制造技术研究中心 | Sand mould digitization flexible extrusion near-net forming optimization method based on search algorithm |
-
2004
- 2004-05-21 CN CN 200420059645 patent/CN2745671Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665631A (en) * | 2016-01-26 | 2016-06-15 | 机械科学研究总院先进制造技术研究中心 | Sand mould digitization flexible extrusion near-net forming optimization method based on search algorithm |
| US11120177B2 (en) | 2016-01-26 | 2021-09-14 | Beijing National Innovation Institute Of Lightweight Ltd. | Sand mold digital flexible extrusion near-net forming optimization method based on search algorithm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |