CN101947866B - Stroke-adjustable multistage buffer gas cushion - Google Patents
Stroke-adjustable multistage buffer gas cushion Download PDFInfo
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- CN101947866B CN101947866B CN2010102864185A CN201010286418A CN101947866B CN 101947866 B CN101947866 B CN 101947866B CN 2010102864185 A CN2010102864185 A CN 2010102864185A CN 201010286418 A CN201010286418 A CN 201010286418A CN 101947866 B CN101947866 B CN 101947866B
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Abstract
The invention relates to a stroke-adjustable multistage buffer gas cushion used on a pressing machine. The stroke-adjustable multistage buffer gas cushion comprises a main buffer mechanism and at least one single-stage supercharging mechanism which is orderly connected with the main buffer gear in series, wherein the upper end of the buffer mechanism is connected with an apical cap. The invention has an ingenious and reasonable structure, designs multiple single-stage supercharging mechanisms which can be orderly connected in series, and can enable the buffer gas cushion to obtain high output pressure in limited installation space through the progressive force transfer; the lifting position of the post rod is controlled by adjusting the adjusting screw rod, thus being capable of adjusting the stroke of the gas cushion automatically and precisely, overcoming the defect that post rods with different lengths need to be replaced when assembling different dies, enhancing the production efficiency of the pressing machine and widening the application range; and rigid contact site of the part, which generates relative movement in the gas cushion, is provided with a polyurethane buffer, thereby effectively solving problem of noise generated by the rigid contact in the working process of the gas cushion.
Description
Technical field
The present invention relates to a kind of buffering pneumatic cushion, specifically a kind of adjustable multi-buffer air cushion of stroke that is applied on the forcing press.
Background technology
Air cushion is to be motive bullet apical organ with compressed air, and its kind is a lot, according to the difference of version; Can be divided into single piston type and multi-piston type; Fixedly air-cylinder type and moving cylinder formula, air cushion self guide type and workbench guide type, range-adjustable formula and non-adjustable stroke type etc.Can be divided into air cushion and following air cushion according to the installation site difference.Air cushion can cooperate with slide block with mould and pumps, and when forcing press carries out drawing process, plays flanging and inloading part dnockout, when forcing press carries out punching process, plays head part.Behind forcing press assembling air cushion, single action press just can carry out drawing process, thereby has enlarged the processing range of forcing press.Air cushion is compared with spring pad, rubber blanket, and advantage is: adjustable in pressure, and adjustable range is big, and air cushion pressure can remain unchanged basically in the whole stroke of forcing press, highly versatile, thus improved the punching precision and the operating efficiency of forcing press.Therefore on forcing press, adopted air-cushion device more and more widely, also the function of air cushion, technical indicator etc. have progressively been had higher requirement simultaneously, like low noise, output pressure that stroke is adjustable, big etc., to adapt to the demand of production.In the prior art; The increase of output pressure normally realizes through the mode of using a plurality of single-stage air cushions; But be to use a plurality of single-stage air cushions may bring shortcomings such as action poor synchronization, pressure is inconsistent, thereby produce problems such as punching precision is low, percent defective height.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; Provide a kind of structure ingenious rationally; The air cushion stroke can be automatically, fine adjustment, the multi-buffer air cushion that output pressure can be adjusted flexibly, and this buffering pneumatic cushion can effectively improve the production efficiency of forcing press; Enlarge its scope of application, and operating noise is low.
According to technical scheme provided by the invention, said stroke is adjustable, and the multi-buffer air cushion comprises a host buffer mechanism and at least one single stage supercharging mechanism in sequential series with it, and host buffer mechanism upper end is connected with apical cap; Said host buffer mechanism comprises push rod, regulates leading screw, bearing assembly, big synchronous pulley, band, small synchronous pulley, drive motors, drive end bearing bracket, adjusting nut, Master cylinder body and main piston synchronously; Master cylinder body lower end sealed attachment single stage supercharging mechanism; Drive motors is installed in drive end bearing bracket one side, on the output shaft of drive motors small synchronous pulley is installed; The center of drive end bearing bracket offers installing hole, and adjusting nut is contained in the installing hole and is fixed on the drive end bearing bracket, and the adjusting leading screw is contained in the adjusting nut and with adjusting nut and constitutes the screw thread transmission; Big synchronous pulley is installed on the drive end bearing bracket through bearing assembly and can freely rotates, and big synchronous pulley is connected transmission with small synchronous pulley through synchronous band; Regulate in the central through hole that leading screw is contained in big synchronous pulley and can move axially; On adjusting leading screw outer wall, offer axial connection slot; Inwall at big synchronous pulley centre bore is provided with linking bond; Linking bond is embedded in the connection slot, and big synchronous pulley rotates drive adjusting leading screw and rotates and produce elevating movement synchronously; Said adjusting leading screw center is provided with axial through hole, and push rod is contained in the central through hole of regulating leading screw and can endwisely slips, and connects apical cap after the push rod upper end is upward through the push-rod hole on the frame; The push rod lower end is stretched out the central through hole main piston interior with being assemblied in Master cylinder body of regulating leading screw and is connected; The main pneumostome of offering on the main main air inlet chamber of breathing chamber and bottom that is divided into top in the Master cylinder body by main piston, main breathing chamber and drive end bearing bracket communicates, and the primary air inlet of offering in main air inlet chamber and the single stage supercharging mechanism communicates; Said single stage supercharging mechanism comprises and connects cylinder cap, supercharging cylinder body, charged piston bar and charged piston; The lower end sealed attachment that connects cylinder cap top and Master cylinder body, the lower end of supercharging cylinder body is tightly connected with the cylinder cap that connects of next single stage supercharging mechanism, the lower end of the supercharging cylinder body of last the single stage supercharging mechanism rear end cap that is tightly connected; Center connecting cylinder cap offers the piston rod through hole, and charged piston bar upper end is passed the piston rod through hole and stretched in the Master cylinder body and upwards withstand main piston, seals through seal between charged piston bar and the piston rod through hole; The charged piston bar lower end charged piston interior with being assemblied in the supercharging cylinder body is connected; Be pressurized piston in the said supercharging cylinder body and be divided into the Positive Pressure Breathing chamber on top and the super charge chamber of bottom; The Positive Pressure Breathing chamber with connect cylinder cap on the Positive Pressure Breathing mouth offered communicate, the super charge mouth of offering on super charge chamber and connection cylinder cap or the rear end cap communicates.
As further improvement of the present invention, be equipped with on the said frame near switch with down near switch, go up near switch and the high-low limit position that controls to adjust the leading screw elevating movement down near switch respectively.
As further improvement of the present invention; The lower end of said adjusting leading screw is connected with buffing pad; The upper surface of the lower surface of buffing pad, charged piston bar and the inner face of rear end cap are equipped with groove, and correspondence is equipped with leading screw cushion pad, piston rod cushion pad and the cylinder cap cushion pad that geomery is complementary in each groove.
As further improvement of the present invention, said bearing assembly comprises location bearing, following location bearing and bearing cap; Upper surface at drive end bearing bracket is provided with bearing spider, and the outer ring of following location bearing is bearing on the bearing spider, and the inner ring of following location bearing is enclosed within the bottom of big synchronous pulley and plays supporting role; The inner ring of last location bearing is enclosed within the top of big synchronous pulley, and the outer ring of last location bearing compresses through bearing cap, and bearing cap is fixed on the drive end bearing bracket.
As further improvement of the present invention, said push rod and regulate between the central through hole of leading screw, sliding sleeve all be housed between the push-rod hole on push rod and the frame.
As further improvement of the present invention, the end play of the matching thread between said adjusting leading screw and the adjusting nut is not more than 0.10mm.
As further improvement of the present invention, muffler is installed at said main pneumostome and Positive Pressure Breathing mouth place respectively.
As further improvement of the present invention, said drive motors adopts servomotor.
As further improvement of the present invention, said leading screw cushion pad, piston rod cushion pad and cylinder cap cushion pad all are connected and fixed through bolt part, smear high strength screw thread glue on the bolt part.
As further improvement of the present invention, said leading screw cushion pad, piston rod cushion pad and cylinder cap cushion pad adopt polyurethane material to process.
The present invention compared with prior art, advantage is: structure is ingenious rationally, has designed a plurality of single stage supercharging mechanisms that can be in sequential series, through the transmission step by step of power, can in limited installing space, make buffering pneumatic cushion obtain bigger output pressure; Regulate the lifting position that leading screw is controlled push rod through adjustment, make the air cushion stroke can be automatically, fine adjustment, overcome the drawback that need change the different length push rod when assembling different mould, improved the production efficiency of forcing press, enlarged the scope of application; The rigidity contact site that produces the parts of relative motion in the air cushion is provided with the polyurethane buffering pad, has solved the air cushion problem of rigidity contact generation noise in the course of the work effectively.
Description of drawings
Fig. 1 is the structural front view of the embodiment of the invention.
Description of reference numerals: 1-apical cap; The 2-push rod; The 3-frame; 4-regulates leading screw; The 5-connection slot; The 6-linking bond; The big synchronous pulley of 7-; 8-is with synchronously; The 9-small synchronous pulley; The 10-drive motors; The 11-motor cabinet; The 12-drive end bearing bracket; The 13-adjusting nut; The 14-Master cylinder body; The 15-buffing pad; The 16-main piston; The 17-primary air inlet; 18-connects cylinder cap; 19-charged piston bar; 20-supercharging cylinder body; The 21-charged piston; 22-super charge mouth; The 23-rear end cap; 24-cylinder cap cushion pad; 25-super charge chamber; 26-Positive Pressure Breathing chamber; 27-Positive Pressure Breathing mouth; 28-piston rod cushion pad; 29-master's air inlet chamber; 30-leading screw cushion pad; 31-master breathes chamber; 32-master's pneumostome; The 33-bearing spider; Location bearing under the 34-; The last location bearing of 35-; The 36-bearing cap; 37a-is last near switch; Under the 37b-near switch; The 38-sliding sleeve; A-single stage supercharging mechanism.
The specific embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1, among the embodiment is the two-stage buffering pneumatic cushion, and it comprises a host buffer mechanism and the A of single stage supercharging mechanism, and the A of several single stage supercharging mechanisms in sequential series again can form the multi-buffer air cushion in the bottom of the A of this single stage supercharging mechanism.
As shown in Figure 1, said host buffer mechanism mainly by push rod 2, frame 3, regulate leading screw 4, big synchronous pulley 7, be with 8 synchronously, small synchronous pulley 9, drive motors 10, motor cabinet 11, drive end bearing bracket 12, adjusting nut 13, Master cylinder body 14 and main piston 16 form.Master cylinder body 14 A of lower end sealed attachment single stage supercharging mechanism.Drive motors 10 is installed in drive end bearing bracket 12 1 sides through motor cabinet 11, and small synchronous pulley 9 is installed on the output shaft of drive motors 10.The center of drive end bearing bracket 12 offers installing hole, and adjusting nut 13 is contained in the installing hole and utilizes screw to be fixed on the drive end bearing bracket 12, and adjusting leading screw 4 is contained in the adjusting nut 13 and with adjusting nut 13 and constitutes the screw thread transmissions.Big synchronous pulley 7 is installed on the drive end bearing bracket 12 through bearing assembly and can freely rotates, and synchronous pulley 7 and small synchronous pulley 9 are through be with 8 to be connected transmission synchronously greatly.Regulate in the central through hole that leading screw 4 is contained in big synchronous pulley 7 and can move axially; On adjusting leading screw 4 outer walls, offer axial connection slot 5; Inwall at big synchronous pulley 7 centre bores is provided with linking bond 6; Linking bond 6 is embedded in the connection slot 5, and big synchronous pulley 7 rotates drive adjusting leading screw 4 and rotates synchronously.Because adjusting nut 13 is fixed on the drive end bearing bracket 12, under adjusting nut 13 fixed situation, regulates leading screw 4 rotations and will make relative the moving axially of himself generation; Be drive motors 10 positive and negative rotations, regulate leading screw 4 and will correspondingly produce elevating movement.Said adjusting leading screw 4 centers are provided with axial through hole, and push rod 2 is contained in the central through hole of regulating leading screw 4 and can endwisely slips, and push rod 2 upper ends connect apical cap 1 after being upward through the push-rod hole on the frame 3.In order to make push rod 2 smooth and easy slips, said push rod 2 and regulate between the central through hole of leading screw 4, sliding sleeve 38 all be housed between the push-rod hole on push rod 2 and the frame 3.Push rod 2 lower ends are stretched out the central through hole of regulating leading screw 4 main piston interior with being assemblied in Master cylinder body 14 16 and are connected through screw thread.The main main air inlet chamber 29 of breathing chamber 31 and bottom that is divided into top in the Master cylinder body 14 by main piston 16, the main main pneumostome of offering on chamber 31 and the drive end bearing bracket 12 32 of breathing communicates, and the primary air inlet of offering on main air inlet chamber 29 and the A of single stage supercharging mechanism 17 communicates.In concrete the application,, just can limit being contained in the lifting position of regulating the push rod 2 in leading screw 4 central through holes, reach the purpose of regulating the buffering pneumatic cushion stroke through the particular location of fine setting adjusting leading screw 4; Assembling the drawback that different moulds need be changed different length push rod 2 in the conventional art thereby overcome, improved the production efficiency of forcing press, enlarged the scope of application, is that condition has been created in the numeral that realizes forcing press, accurate control.
As shown in Figure 1, the said single stage supercharging A of mechanism mainly forms by connecting cylinder cap 18, supercharging cylinder body 20, charged piston bar 19 and charged piston 21; The lower end sealed attachment that connects cylinder cap 18 tops and Master cylinder body 14, the lower end of supercharging cylinder body 20 rear end cap 23 that is tightly connected.Center connecting cylinder cap 18 offers the piston rod through hole, and charged piston bar 19 upper ends are passed the piston rod through hole and stretched in the Master cylinder body 14 and upwards withstand main piston 16, seal through seal between charged piston bar 19 and the piston rod through hole.Charged piston bar 19 lower ends are connected through screw thread with charged piston 21 in being assemblied in supercharging cylinder body 20.Be pressurized piston 21 in the said supercharging cylinder body 20 and be divided into the Positive Pressure Breathing chamber 26 on top and the super charge chamber 25 of bottom; Positive Pressure Breathing chamber 26 with connect cylinder cap 18 on the Positive Pressure Breathing mouth 27 offered communicate, the super charge mouth of offering on super charge chamber 25 and the rear end cap 23 22 communicates.
As shown in Figure 1, said bearing assembly is by last location bearing 35, location bearing 34 and bearing cap 36 are formed down; Upper surface at drive end bearing bracket 12 is provided with bearing spider 33, and the outer ring of following location bearing 34 is bearing on the bearing spider 33, and the inner ring of following location bearing 34 is enclosed within the bottom of big synchronous pulley 7 and plays supporting role; The inner ring of last location bearing 35 is enclosed within the top of big synchronous pulley 7, and the outer ring of last location bearing 34 compresses through bearing cap 36, and bearing cap 36 is fixed on the drive end bearing bracket 12 through screw.
As shown in Figure 1; Be equipped with on the said frame 3 near switch 37a with down near switch 37b; Go up near switch 37a and the high-low limit position that controls to adjust leading screw 4 elevating movements down near switch 37b respectively, so that the travel range of adjusting leading screw 4 elevating movements is regulated accurately.
As shown in Figure 1, the lower end of said adjusting leading screw 4 is connected with buffing pad 15; Be equipped with groove at the lower surface of buffing pad 15, the upper surface of charged piston bar 19 and the inner face of rear end cap 23; Correspondence is equipped with leading screw cushion pad 30, piston rod cushion pad 28 and the cylinder cap cushion pad 24 that geomery is complementary in each groove, thus efficiently solve in the buffering pneumatic cushion parts in the course of the work the rigidity contact produce the problem of noise.Each cushion pad all is connected and fixed through bolt part, need smear high strength screw thread glue on the bolt part, becomes flexible to prevent cushion pad to be hit vibration.Said leading screw cushion pad 30, piston rod cushion pad 28 and cylinder cap cushion pad 24 be preferential to adopt elasticity and intensity is higher, fatigue durability and the excellent polyurethane material of anti-vibration resistance are processed.In addition, the main pneumostome 32 on the said buffering pneumatic cushion can also be installed muffler with Positive Pressure Breathing mouth 27 places, with further reduction operating noise.
The drive motors 10 preferential servomotors that adopt among the present invention; Servomotor is compared with common stepper motor, and its pulse equivalency is littler, and control accuracy is higher; No overshoot and lose the bat phenomenon; Control performance is more reliable, has stronger moment overload capacity simultaneously, and these are similarly air cushion stroke numeral, the accurate adjustable advantage that provides.The precision of the matching thread between said adjusting leading screw 4 and the adjusting nut 13 should strictly be controlled, and should guarantee that its end play is not more than 0.10mm, to improve the punching precision of forcing press.
The course of work of the present invention and operation principle are following:
At first confirm the lifting position of push rod 2, limit the lifting position of push rod 2 then through the particular location of fine setting adjusting leading screw 4 according to mould.Control method is following: start drive motors 10, drive motors 10 passes through the big synchronous pulley 7 of small synchronous pulley 9 drives and rotates, and big synchronous pulley 7 rotates drive adjusting leading screw 4 and rotates synchronously; Because adjusting nut 13 is fixed on the drive end bearing bracket 12, under adjusting nut 13 fixed situation, regulates leading screw 4 rotations and will make relative the moving axially of himself generation; Be drive motors 10 positive and negative rotations, regulate leading screw 4 and will correspondingly produce elevating movement, thereby accomplish the position adjustment of regulating leading screw 4.
Then compressed air is fed in main air inlet chamber 29 and the super charge chamber 25 from primary air inlet 17 and super charge mouth 22 respectively; Main piston 16 all is under pressure with charged piston 21; Main piston 16 promotes push rod 2 and rises; The charged piston bar 19 that withstands on main piston 16 lower surfaces also upwards promotes, and after transmitting step by step, has obtained bigger output pressure.The A of single stage supercharging mechanism is many more, and the output pressure of generation is big more, thereby has realized in limited installing space, increasing the purpose of air cushion output pressure.Solve the inconsistent problem that influences punching precision, increase percent defective that produces of action poor synchronization, pressure because of them that a plurality of single-stage air cushions of original use may bring, and greatly reduced the production cost of buffering pneumatic cushion.
Claims (10)
1. the adjustable multi-buffer air cushion of stroke comprises a host buffer mechanism and at least one single stage supercharging mechanism (A) in sequential series with it, it is characterized in that: host buffer mechanism upper end is connected with apical cap (1);
Said host buffer mechanism comprises push rod (2), regulates leading screw (4), bearing assembly, big synchronous pulley (7), band (8), small synchronous pulley (9), drive motors (10), drive end bearing bracket (12), adjusting nut (13), Master cylinder body (14) and main piston (16) synchronously; Master cylinder body (14) lower end sealed attachment single stage supercharging mechanism (A); Drive motors (10) is installed in drive end bearing bracket (12) one sides, and small synchronous pulley (9) is installed on the output shaft of drive motors (10); The center of drive end bearing bracket (12) offers installing hole, and adjusting nut (13) is contained in the installing hole and is fixed on the drive end bearing bracket (12), and adjusting leading screw (4) is contained in the adjusting nut (13) and with adjusting nut (13) and constitutes the screw thread transmission; Big synchronous pulley (7) is installed in drive end bearing bracket (12) through bearing assembly and upward also can freely rotates, and big synchronous pulley (7) is connected transmission with small synchronous pulley (9) through being with (8) synchronously; Regulate in the central through hole that leading screw (4) is contained in big synchronous pulley (7) and can move axially; On adjusting leading screw (4) outer wall, offer axial connection slot (5); Inwall at big synchronous pulley (7) centre bore is provided with linking bond (6); Linking bond (6) is embedded in the connection slot (5), and big synchronous pulley (7) rotates drive adjusting leading screw (4) and rotates and produce elevating movement synchronously; Said adjusting leading screw (4) center is provided with axial through hole, and push rod (2) is contained in the central through hole of regulating leading screw (4) and can endwisely slips, and connects apical cap (1) after push rod (2) upper end is upward through the push-rod hole on the frame (3); Push rod (2) lower end is stretched out the central through hole of adjusting leading screw (4) and is connected with the interior main piston (16) of Master cylinder body (14); Be divided into the main breathing chamber (31) on top and the main air inlet chamber (29) of bottom by main piston (16) in the Master cylinder body (14); The main main pneumostome of offering on chamber (31) and the drive end bearing bracket (12) (32) of breathing communicates, and the primary air inlet of offering in main air inlet chamber (29) and the single stage supercharging mechanism (A) (17) communicates;
Said single stage supercharging mechanism (A) comprises connection cylinder cap (18), supercharging cylinder body (20), charged piston bar (19) and charged piston (21); The lower end sealed attachment that connects cylinder cap (18) top and Master cylinder body (14); The lower end of supercharging cylinder body (20) is tightly connected with the cylinder cap (18) that connects of next single stage supercharging mechanism (A), the lower end of the supercharging cylinder body (20) of last single stage supercharging mechanism (A) rear end cap (23) that is tightly connected; Center connecting cylinder cap (18) offers the piston rod through hole; Charged piston bar (19) upper end is passed the piston rod through hole and is stretched in the Master cylinder body (14) and upwards withstand main piston (16), seals through seal between charged piston bar (19) and the piston rod through hole; Charged piston bar (19) lower end is assemblied in the interior charged piston (21) of supercharging cylinder body (20) with sealing and is connected; Be pressurized piston (21) in the said supercharging cylinder body (20) and be divided into the Positive Pressure Breathing chamber (26) on top and the super charge chamber (25) of bottom; Positive Pressure Breathing chamber (26) with connect cylinder cap (18) on the Positive Pressure Breathing mouth (27) offered communicate, the super charge mouth of offering on super charge chamber (25) and connection cylinder cap (18) or the rear end cap (23) (22) communicates.
2. the adjustable multi-buffer air cushion of stroke as claimed in claim 1; It is characterized in that: be equipped with on the said frame (3) near switch (37a) with down near switch (37b), go up near switch (37a) and the following high-low limit position that controls to adjust leading screw (4) elevating movement near switch (37b) respectively.
3. the adjustable multi-buffer air cushion of stroke as claimed in claim 1; It is characterized in that: the lower end of said adjusting leading screw (4) is connected with buffing pad (15); The inner face of the upper surface of the lower surface of buffing pad (15), charged piston bar (19) and rear end cap (23) is equipped with groove, and correspondence is equipped with leading screw cushion pad (30), piston rod cushion pad (28) and the cylinder cap cushion pad (24) that geomery is complementary in each groove.
4. the adjustable multi-buffer air cushion of stroke as claimed in claim 1 is characterized in that: said bearing assembly comprises location bearing (35), following location bearing (34) and bearing cap (36); Upper surface at drive end bearing bracket (12) is provided with bearing spider (33), and the outer ring of following location bearing (34) is bearing on the bearing spider (33), and the inner ring of following location bearing (34) is enclosed within the bottom of big synchronous pulley (7) and plays supporting role; The inner ring of last location bearing (35) is enclosed within the top of big synchronous pulley (7), and the outer ring of last location bearing (35) compresses through bearing cap (36), and bearing cap (36) is fixed on the drive end bearing bracket (12).
5. the adjustable multi-buffer air cushion of stroke as claimed in claim 1 is characterized in that: said push rod (2) and regulate between the central through hole of leading screw (4), sliding sleeve (38) all be housed between the push-rod hole on push rod (2) and the frame (3).
6. the adjustable multi-buffer air cushion of stroke as claimed in claim 1 is characterized in that: the end play of the matching thread between said adjusting leading screw (4) and the adjusting nut (13) is not more than 0.10mm.
7. the adjustable multi-buffer air cushion of stroke as claimed in claim 1 is characterized in that: said main pneumostome (32) and Positive Pressure Breathing mouth (27) locate to install respectively muffler.
8. the adjustable multi-buffer air cushion of stroke as claimed in claim 1 is characterized in that: said drive motors (10) adopts servomotor.
9. the adjustable multi-buffer air cushion of stroke as claimed in claim 3 is characterized in that: said leading screw cushion pad (30), piston rod cushion pad (28) and cylinder cap cushion pad (24) all are connected and fixed through bolt part, smear high strength screw thread glue on the bolt part.
10. the adjustable multi-buffer air cushion of stroke as claimed in claim 9 is characterized in that: said leading screw cushion pad (30), piston rod cushion pad (28) and cylinder cap cushion pad (24) adopt polyurethane material to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102864185A CN101947866B (en) | 2010-09-18 | 2010-09-18 | Stroke-adjustable multistage buffer gas cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102864185A CN101947866B (en) | 2010-09-18 | 2010-09-18 | Stroke-adjustable multistage buffer gas cushion |
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| Publication Number | Publication Date |
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| CN101947866A CN101947866A (en) | 2011-01-19 |
| CN101947866B true CN101947866B (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102864185A Expired - Fee Related CN101947866B (en) | 2010-09-18 | 2010-09-18 | Stroke-adjustable multistage buffer gas cushion |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143662B (en) * | 2013-03-07 | 2015-04-15 | 西安交通大学 | Oil-pump-free direct-drive type force control supercharged hydraulic machine provided with alternating current servo motor |
| CN108167267B (en) * | 2018-02-11 | 2023-06-16 | 扬力集团股份有限公司 | Stroke-adjustable air cushion |
| CN108838269A (en) * | 2018-09-04 | 2018-11-20 | 济南二机床集团有限公司 | A kind of die cushion device |
| KR102363350B1 (en) * | 2021-10-20 | 2022-02-14 | 이장일 | Control system of automatic pressing and forming apparatus with accuracy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4704047B2 (en) * | 2005-01-14 | 2011-06-15 | 株式会社小松製作所 | Die cushion device |
| CN200992002Y (en) * | 2006-12-30 | 2007-12-19 | 江苏扬力集团有限公司 | Open two-point press double-air-cushion device |
| CN201020868Y (en) * | 2007-03-22 | 2008-02-13 | 江苏扬力集团有限公司 | Press mobile type air cushion device |
| PL2189276T3 (en) * | 2008-11-25 | 2016-11-30 | Plate press and pressed sheet-pressed cushion unit | |
| CN201800261U (en) * | 2010-09-18 | 2011-04-20 | 无锡市拓发自控设备有限公司 | Stroke-adjusting multistage buffer air cushion |
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Granted publication date: 20120229 Termination date: 20180918 |