CN105356653A - Vacuum electric cylinder - Google Patents
Vacuum electric cylinder Download PDFInfo
- Publication number
- CN105356653A CN105356653A CN201510786214.0A CN201510786214A CN105356653A CN 105356653 A CN105356653 A CN 105356653A CN 201510786214 A CN201510786214 A CN 201510786214A CN 105356653 A CN105356653 A CN 105356653A
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- China
- Prior art keywords
- cylinder barrel
- screw mandrel
- electric cylinder
- cavity
- vacuum electric
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- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 8
- 230000035515 penetration Effects 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manipulator (AREA)
- Transmission Devices (AREA)
- Actuator (AREA)
Abstract
The invention discloses a vacuum electric cylinder comprising a cylinder tube and a lead screw which is arranged in the cylinder tube. The two ends of the cylinder tube are provided with a ball head and a motor base. The motor base is provided with a servo motor. The hinge ball in the ball head is arranged in a ball head base in a penetration way. The end part of the ball head base is flexibly connected with a sucking disc. A piston rod is arranged in the lead screw. The piston rod is connected with the servo motor via a connecting rod and a shaft coupler. The sucking disc is provided with a flexible contact surface so that the position of the vacuum electric cylinder can be accurately positioned without damaging an acting surface. The decoder of the servo motor is enabled to directly feedback displacement quantity of the lead screw by arrangement of connection of the servo motor and the piston rod so that inertia and clearance of intermediate links can be reduced and control performance and control precision can be enhanced.
Description
Technical field
The invention belongs to drive unit field, be specifically related to a kind of vacuum electric cylinder.
Background technology
Along with the requirement of factory automation is more and more higher, electric cylinder will be more widely used.Compare with cylinder with hydraulic cylinder, the service behaviour of electric cylinder is not easy the impact being subject to external environment, and electric cylinder does not need pump complicated as hydraulic system, valve and fluid pressure line yet, and structure is simple.Electric cylinder has that precision is high, response is fast, electrical system synchronism is good and the advantage of working stability, can meet the needs of most of workplace.Traditional electric cylinder generally adopts motor driven leading screw to rotate, and is converted into the rectilinear motion of nut by the screw between component, there is the problem that inertia is large and damage is large.Existing electric cylinder mostly is open, the guide rail of electric cylinder and motor etc. are all outside exposed, the foreign matter that there will be outside is easily mixed into electric cylinder inside, thus the parts in infringement electric cylinder, and motor and screw mandrel, piston rod are separated, there is low-response, control precision low and directly can not feed back the problem of screw mandrel displacement.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of accurate positioning, compact conformation and the direct vacuum electric cylinder feeding back screw mandrel displacement.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of vacuum electric cylinder, comprise cylinder barrel and be positioned at the screw mandrel of cylinder barrel, the two ends of cylinder barrel are provided with bulb and motor cabinet, and motor cabinet is provided with servomotor;
Bulb comprises hinged ball, ball stud and the screw rod that one connects, and screw rod end is provided with lock device joint, and lock device joint is connected with screw mandrel.The axis of bulb offers the first cavity, and hinged ball is located in ball cup.The end of ball cup is connected with sucker;
Be provided with the second cavity and the 3rd cavity in screw mandrel, the internal diameter of the second cavity is less than the internal diameter of the 3rd cavity, is provided with piston rod in the 3rd cavity.One end of piston rod is connected with piston, and the other end of piston rod is connected with connecting rod.The end of screw mandrel is located in fairlead, and fairlead is arranged on the inwall of cylinder barrel.Screw mandrel is located in cylinder barrel, and cylinder barrel is connected by retainer ring with screw mandrel, and cylinder barrel is connected with motor cabinet;
Be provided with transmission component in motor cabinet, transmission component comprises thrust bearing, bearing holder (housing, cover), plane bearing and locking nut, and thrust bearing, bearing holder (housing, cover), plane bearing and locking nut are set on connecting rod successively.Thrust bearing is positioned at the top of plane bearing, and bearing holder (housing, cover) is set in outside thrust bearing and plane bearing.Locking nut is positioned at the bottom of plane bearing, and connecting rod is connected with servomotor by shaft joint.
Its beneficial effect is: sucker has flexible contact face, can realize under the condition in not destruction face, accurately the position of fixing vacuum electric cylinder.Hinged ball is located in ball cup, and can rotate by any direction, can increase the contact area between assembly, reduces contact stress and extends useful life of bulb.Servomotor is connected with piston rod, makes the encoder of servomotor directly feed back the displacement of screw mandrel, decreases inertia and the gap of intermediate link, improves controlling and control precision.
In some embodiments, the groove on screw rod is chimeric with the projection in screw mandrel, and the groove in retainer ring is chimeric with the projection on screw mandrel.
Its beneficial effect is: make the combination between parts more tight, and improve its bearing capacity.
In some embodiments, inner wall of cylinder is provided with guide rail, and fairlead is arranged on guide rail, is provided with ball between fairlead and guide rail.
Its beneficial effect is: the setting of guide rail can be fairlead to be provided movement locus and be fixed fairlead, avoids producing displacement, improves the fail safe of use.
In some embodiments, cylinder barrel outer wall is provided with the first limit switch and the second limit switch, and the first limit switch is positioned at the top of the second limit switch.
Its beneficial effect is: limit switch be used for limit screw mandrel motion position or stroke, screw mandrel is stopped and counter motion automatically by certain position or stroke.
In some embodiments, cylinder barrel is arranged with detachable fixed head, fixed head is positioned at the top of the first limit switch, fixed head offers location hole and screw.
Its beneficial effect is: the dismountable setting of fixed head achieves installs easily, sets simple effect, and fixed head can be combined with sucker and play dual fixing effect, is fixed in functional component by vacuum electric cylinder.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of the vacuum electric cylinder of an embodiment of the present invention;
Fig. 2 is the cross-sectional schematic of the vacuum electric cylinder of an embodiment of the present invention.
Corresponding component title in figure represented by numeral:
1. sucker, 2. bulb, 21. hinged balls, 22. ball studs, 221. fixing hole, 23. screw rods, 231. lock device joints, 24. first cavitys, 3. ball cup, 4. screw mandrel, 41. second cavitys, 42. the 3rd cavitys, 421. piston rod, 422. piston, 43. steam vents, 5. retainer ring, 6. fixed head, 61. location holes, 62. screws, 7. cylinder barrel, 71. guide rails, 711. fairlead, 712. ball, 72. first limit switches, 73. second limit switches, 8. motor cabinet, 81. oil filler points, 82. through holes, 831. thrust bearing, 832. bearing holder (housing, cover), 833. plane bearing, 834. locking nut, 84. shaft joints, 9. servomotor.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail:
As shown in Fig. 1 ~ 2, the invention provides a kind of vacuum electric cylinder, comprise cylinder barrel 7 and be positioned at the screw mandrel 4 of cylinder barrel 7, the two ends of cylinder barrel 7 are provided with bulb 2 and motor cabinet 8, motor cabinet 8 are provided with servomotor 9.
Bulb 2 comprises hinged ball 21, ball stud 22 and the screw rod 23 that one connects, and screw rod 23 end is provided with lock device joint 231, and lock device joint 231 is connected with screw mandrel 4.Groove on screw rod 23 is chimeric with the projection in screw mandrel 4.The axis of bulb 2 offers the first cavity 24, and hinged ball 21 is located in ball cup 3.The end of ball cup 3 is connected with sucker 1.Sucker 1 has flexible contact face, can realize under the condition in not destruction face, accurately the position of fixing vacuum electric cylinder.Hinged ball 21 is located in ball cup 3, and can rotate by any direction, can increase the contact area between assembly, reduces contact stress and extends useful life of bulb 2.
The internal diameter being provided with the second cavity 41 and the 3rd cavity 42, second cavity 41 in screw mandrel 4 is less than the internal diameter of the 3rd cavity 42, is provided with piston rod 421 in the 3rd cavity 42.One end of piston rod 421 is connected with piston 422, and the other end of piston rod 421 is connected with connecting rod.The end of screw mandrel 4 is located in fairlead 711, and fairlead 711 is arranged on the inwall of cylinder barrel 7.Screw mandrel 4 is located in cylinder barrel 7, and cylinder barrel 7 is connected by retainer ring 5 with screw mandrel 4.Groove in retainer ring 5 is chimeric with the projection on screw mandrel 4, makes the combination between parts more tight, and improves its bearing capacity.Cylinder barrel 7 inwall is provided with guide rail 71, and fairlead 711 is arranged on guide rail 71, is provided with ball 712 between fairlead 711 and guide rail 71.The setting of guide rail 71 can be fairlead 711 to be provided movement locus and is fixed fairlead 711, avoids producing displacement, improves the fail safe of use.
Cylinder barrel 7 is connected with motor cabinet 8.Cylinder barrel 7 outer wall is provided with the top that the first limit switch 72 and the second limit switch 73, first limit switch 72 are positioned at the second limit switch 73.Limit switch be used for limit screw mandrel 4 move position or stroke, screw mandrel 4 is stopped and counter motion automatically by certain position or stroke.Cylinder barrel 7 is arranged with detachable fixed head 6, fixed head 6 is positioned at the top of the first limit switch 72, fixed head 6 offers location hole 61 and screw 62.The dismountable setting of fixed head 6 achieves installs easily, sets simple effect.Fixed head 6 can be combined with sucker 1 and play dual fixing effect, is fixed in functional component by vacuum electric cylinder.
Be provided with transmission component in motor cabinet 8, transmission component comprises thrust bearing 831, bearing holder (housing, cover) 832, plane bearing 833 and locking nut 834, and thrust bearing 831, bearing holder (housing, cover) 832, plane bearing 833 and locking nut 834 are set on connecting rod successively.Thrust bearing 831 is positioned at the top of plane bearing 833, and bearing holder (housing, cover) 832 is set in outside thrust bearing 831 and plane bearing 833.Locking nut 834 is positioned at the bottom of plane bearing 833, and connecting rod is connected with servomotor 9 by shaft joint 84.Servomotor 9 is connected with piston rod 421, makes the encoder of servomotor 9 directly feed back the displacement of screw mandrel 4, decreases inertia and the gap of intermediate link, improves controlling and control precision.
Operation principle is as follows:
By sucker 1 and fixed head 6, vacuum electric cylinder is fixed on effect object, servomotor 9 by transmission component by the transmission of power of motor to fairlead 711.Fairlead 711 promotes leading screw 4 and moves along guide rail 71, and screw mandrel 4 drives piston 422 relative motion, is discharged by the gas in cavity, realize Vacuum Package from steam vent 43.The encoder of servomotor 9 directly feeds back the displacement of screw mandrel 4, when fairlead 711 touches the first limit switch 72, and screw mandrel 4 stop motion or carry out counter motion.
Below be only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (5)
1. vacuum electric cylinder, it is characterized in that, comprise cylinder barrel (7) and be positioned at the screw mandrel (4) of cylinder barrel (7), the two ends of described cylinder barrel (7) are provided with bulb (2) and motor cabinet (8), described motor cabinet (8) is provided with servomotor (9)
Described bulb (2) comprises hinged ball (21), ball stud (22) and the screw rod (23) that one connects, described screw rod (23) end is provided with lock device joint (231), described lock device joint (231) is connected with screw mandrel (4), the axis of described bulb (2) offers the first cavity (24), described hinged ball (21) is located in ball cup (3), the end of described ball cup (3) is connected with sucker (1)
The second cavity (41) and the 3rd cavity (42) is provided with in described screw mandrel (4), the internal diameter of described second cavity (41) is less than the internal diameter of the 3rd cavity (42), piston rod (421) is provided with in described 3rd cavity (42), one end of described piston rod (421) is connected with piston (422), the other end of described piston rod (421) is connected with connecting rod, the end of described screw mandrel (4) is located in fairlead (711), described fairlead (711) is arranged on the inwall of cylinder barrel (7), described screw mandrel (4) is located in cylinder barrel (7), described cylinder barrel (7) is connected by retainer ring (5) with screw mandrel (4), described cylinder barrel (7) is connected with motor cabinet (8),
Described motor cabinet is provided with transmission component in (8), described transmission component comprises thrust bearing (831), bearing holder (housing, cover) (832), plane bearing (833) and locking nut (834), described thrust bearing (831), bearing holder (housing, cover) (832), plane bearing (833) and locking nut (834) are set on connecting rod successively, described thrust bearing (831) is positioned at the top of plane bearing (833), described bearing holder (housing, cover) (832) is set in thrust bearing (831) and plane bearing (833) outward, described locking nut (834) is positioned at the bottom of plane bearing (833), described connecting rod is connected with servomotor (9) by shaft joint (84).
2. vacuum electric cylinder according to claim 1, it is characterized in that, groove on described screw rod (23) is chimeric with the projection in screw mandrel (4), and the groove in described retainer ring (5) is chimeric with the projection on screw mandrel (4).
3. vacuum electric cylinder according to claim 1, it is characterized in that, described cylinder barrel (7) inwall is provided with guide rail (71), described fairlead (711) is arranged on guide rail (71), is provided with ball (712) between described fairlead (711) and guide rail (71).
4. vacuum electric cylinder according to claim 1, it is characterized in that, cylinder barrel (7) outer wall is provided with the first limit switch (72) and the second limit switch (73), and described first limit switch (72) is positioned at the top of the second limit switch (73).
5. vacuum electric cylinder according to claim 4, it is characterized in that, cylinder barrel (7) is arranged with detachable fixed head (6), described fixed head (6) is positioned at the top of the first limit switch (72), fixed head (6) offers location hole (61) and screw (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786214.0A CN105356653B (en) | 2015-11-16 | 2015-11-16 | Vacuum electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786214.0A CN105356653B (en) | 2015-11-16 | 2015-11-16 | Vacuum electric cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105356653A true CN105356653A (en) | 2016-02-24 |
| CN105356653B CN105356653B (en) | 2017-10-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510786214.0A Active CN105356653B (en) | 2015-11-16 | 2015-11-16 | Vacuum electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105356653B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115061375A (en) * | 2022-07-06 | 2022-09-16 | 上海莘汭驱动技术有限公司 | A Feedback Self-Adjusting System Based on Servo Electric Cylinder |
| CN118413044A (en) * | 2024-04-16 | 2024-07-30 | 苏州舍勒智能科技有限公司 | An intelligent electric cylinder with load peak control |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692404A2 (en) * | 1994-06-15 | 1996-01-17 | Robert Bosch Gmbh | Control device of the orientation of vehicle headlight |
| US20080164784A1 (en) * | 2007-01-04 | 2008-07-10 | Hsiu-Ming Huang | Step-by-step motor able to carry out up-and-down motion |
| CN101882829A (en) * | 2010-06-09 | 2010-11-10 | 北京市星光凯明动感仿真模拟器中心 | Large-thrust directly connected-type electric cylinder |
| CN201776710U (en) * | 2010-08-17 | 2011-03-30 | 沈阳飞机工业（集团）有限公司 | Electric cylinder with vacuum gas circuit |
| CN203387345U (en) * | 2013-06-06 | 2014-01-08 | 厦门惠拓动漫科技有限公司 | An electric cylinder |
| CN104052188A (en) * | 2014-07-02 | 2014-09-17 | 上海翱锐控制系统有限公司 | Precise electric cylinder |
| CN104318850A (en) * | 2014-11-05 | 2015-01-28 | 湖北世第影视科技有限公司 | Three-dimensional electric platform |
-
2015
- 2015-11-16 CN CN201510786214.0A patent/CN105356653B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692404A2 (en) * | 1994-06-15 | 1996-01-17 | Robert Bosch Gmbh | Control device of the orientation of vehicle headlight |
| US20080164784A1 (en) * | 2007-01-04 | 2008-07-10 | Hsiu-Ming Huang | Step-by-step motor able to carry out up-and-down motion |
| CN101882829A (en) * | 2010-06-09 | 2010-11-10 | 北京市星光凯明动感仿真模拟器中心 | Large-thrust directly connected-type electric cylinder |
| CN201776710U (en) * | 2010-08-17 | 2011-03-30 | 沈阳飞机工业（集团）有限公司 | Electric cylinder with vacuum gas circuit |
| CN203387345U (en) * | 2013-06-06 | 2014-01-08 | 厦门惠拓动漫科技有限公司 | An electric cylinder |
| CN104052188A (en) * | 2014-07-02 | 2014-09-17 | 上海翱锐控制系统有限公司 | Precise electric cylinder |
| CN104318850A (en) * | 2014-11-05 | 2015-01-28 | 湖北世第影视科技有限公司 | Three-dimensional electric platform |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115061375A (en) * | 2022-07-06 | 2022-09-16 | 上海莘汭驱动技术有限公司 | A Feedback Self-Adjusting System Based on Servo Electric Cylinder |
| CN118413044A (en) * | 2024-04-16 | 2024-07-30 | 苏州舍勒智能科技有限公司 | An intelligent electric cylinder with load peak control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105356653B (en) | 2017-10-24 |
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