CN105673616B - A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder - Google Patents

A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder Download PDF

Info

Publication number
CN105673616B
CN105673616B CN201610261791.2A CN201610261791A CN105673616B CN 105673616 B CN105673616 B CN 105673616B CN 201610261791 A CN201610261791 A CN 201610261791A CN 105673616 B CN105673616 B CN 105673616B
Authority
CN
China
Prior art keywords
cylinder
return
energy
gas
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610261791.2A
Other languages
Chinese (zh)
Other versions
CN105673616A (en
Inventor
钟康民
窦云霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Pulai Kerui Electrical And Mechanical Technology Co Ltd
Original Assignee
Suzhou Pulai Kerui Electrical And Mechanical Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Pulai Kerui Electrical And Mechanical Technology Co Ltd filed Critical Suzhou Pulai Kerui Electrical And Mechanical Technology Co Ltd
Priority to CN201610261791.2A priority Critical patent/CN105673616B/en
Publication of CN105673616A publication Critical patent/CN105673616A/en
Application granted granted Critical
Publication of CN105673616B publication Critical patent/CN105673616B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/755—Control of acceleration or deceleration of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

Existing blow cylinder can produce up to more than 100 decibels of impact noise, can not receive for most industrial occasions, thus be essentially limited to minor diameter cylinder.In addition, existing blow cylinder is all double-acting, its backstroke consumes energy serious close to the half of impulse stroke, energy dissipation.The present invention proposes a kind of single-acting blow cylinder that gas spring progress return reset is resetted using return, compared with existing traditional double acting blow cylinder, there is no gas flow air during impact, but enter gas in cylinder and hold, thus impact noise is very low, is completely suitable for any industrial occasions and diameter dimension is unrestricted.Further, since holding return using gas in cylinder, return power only needs to overcome the frictional force of piston piston rod assembly, thus it is little to consume energy.The present invention has the energy-saving and noise-reducing single-acting blow cylinder that return in cylinder resets gas spring, has energy-conservation, low noise, environmental protection, the technical-economic index advantage having a wide range of application etc..

Description

A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder
Technical field
The present invention relates to blow cylinder field, relates generally to a kind of energy-saving and noise-reducing that gas spring is resetted with return in cylinder Single-acting blow cylinder.
Background technology
Blow cylinder is pressure limiting accumulation of energy to be carried out to energy storage chamber, so that piston lifting surface area suddenly expands, and in cylinder operation Intracavitary forms the particular cylinders that pressure surge is technical characteristic.In cylinder diameter, rated pressure under the same conditions, blow cylinder is defeated The peak impact force spent is up to more than 50 times of regular cyclical, and its power consumption is only 2 times or so of regular cyclical.Therefore, for The very big occasion of instantaneous impact is needed, such as some press machines, regular cyclical is substituted using blow cylinder, had extremely bright Aobvious energy-saving effect.
However, the application of blow cylinder is extremely limited at present, minor diameter cylinder is essentially limited to.Cause this The basic reason of situation, it is the blow cylinder of existing structure, if cylinder diameter is larger, the volume of rod chamber certainly will be caused excessive （For the cylinder of d/D=0.20, the ratio between rod chamber volume and rodless cavity volume are 0.96）, and piston-cylinder bar assembly is rushed Hit speed to be exceedingly fast, a large amount of gases being present in rod chamber, because discharge is obstructed, up to more than 100 decibels of impulse noise can be produced Sound, this is that most industrial occasions institutes are unacceptable.Further, since acceleration of the piston-cylinder bar assembly in impact Greatly, the gas in piston rod chamber can be raised suddenly because discharge is obstructed to the back pressure of piston formation, or even can make piston-work Stopper rod component counter motion, produce so-called " negative displacement " phenomenon.Although that someone devises is so-called " fast row " blow cylinder, fast row Apparatus structure is complicated, and manufacturing cost is high, and reduces limited extent to impact noise.
In addition, existing blow cylinder is all double-acting mostly, the power consumption of its backstroke is consumed energy close to impulse stroke Half, energy dissipation is extremely serious.
The content of the invention
The object of the present invention is to overcome existing blow cylinder impact noise excessive, and return consumes energy the shortcomings that excessive, if A kind of seldom low noise blow cylinder of backstroke power consumption is counted out, the application of blow cylinder is significantly expanded, has for society Pass field, there is provided a kind of energy-conservation, low noise, efficient pneumatic apparatus.
For the above-mentioned purpose, the technical solution adopted by the present invention is：A kind of section that gas spring is resetted with return in cylinder Energy noise reduction single-acting blow cylinder, its piston rod is hollow form, and bar content cavity is formed between piston, piston rod；The bar content Chamber is interconnected with the outer cavity volume of bar and to outside relative closure, forms gas in cylinder and hold；Gas holds and is filled with and maintains in the cylinder For the compressed gas of return, form return and reset gas spring.
Preferably, a kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder, its piston-work Between piston one end of stopper rod component and middle cover, with end face seal structure, the mutation device of formation compressed gas active area.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art：
1st, a kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder of the present invention, due in work During work, the gas between piston rod and impact inner wall of cylinder, is not that air is flowed into as existing blow cylinder, but is flowed Enter the bar content cavity that piston is formed with hollow form piston rod, impact noise can be greatly lowered, and can be reduced to 50 decibels completely Hereinafter, it can be received by most industrial occasions, thus application scenario and the scope of blow cylinder can be significantly expanded.
2nd, a kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder of the present invention, due to utilizing Gas spring return, return power only needs to overcome the frictional force of piston-cylinder bar assembly, thus it is little to consume energy, more double than existing Impulses cylinder, energy-saving effect are notable.
Brief description of the drawings
Accompanying drawing 1 is the state diagram that existing double acting blow cylinder is in impulse stroke.It can be seen that existing double acting punching Cylinder is hit, because the volume of piston rod chamber is excessive, and the impact velocity of piston-cylinder bar assembly is exceedingly fast, not only in rod chamber Gas can suddenly raise because of the be obstructed back pressure that can be formed to piston of discharge, and great impact noise can be produced.
Accompanying drawing 2,3,4 has the knot of the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder for the present invention Structure schematic diagram.Wherein, Fig. 2 is reset condition, and Fig. 3 is energy storage chamber accumulation of energy, not yet impacts outburst state, and Fig. 4 breaks out for impact Afterwards, piston-cylinder bar assembly accelerates the impulse stroke state of output impulsive force acting, and Fig. 5 is backstroke state.
In figure, 1, rear end cap；2nd, accumulation of energy cylinder barrel；3rd, middle cover；4th, cylinder barrel is impacted；5th, piston-cylinder bar assembly：51st, piston； 52nd, sealing gasket；53rd, piston rod；6th, right end cap；7th, two position three-way valve；8th, pressure switch；9th, energy storage chamber；10th, bar content cavity；11、 The outer cavity volume of bar；12nd, air-through holes.
Embodiment
Accompanying drawing 2,3,4,5 is the energy-saving and noise-reducing single-acting blow cylinder that the present invention has return reset gas spring in cylinder One specific embodiment.Below, with reference to the specific embodiment, to be further elaborated to technical scheme.
The relatively-stationary parts of cylinder are rear end cap 1, accumulation of energy cylinder barrel 2, middle cover 3, impact cylinder barrel 4, right end cap 6, are moved Part is piston-cylinder bar assembly 5, and control element is two position three-way valve 7, pressure switch 8.
Rear end cap 1, accumulation of energy cylinder barrel 2 and middle cover 3 form energy storage chamber 9；The piston rod 53 of hollow form is formed in bar with piston 51 Cavity volume 10；Piston 51, piston rod 53 and impact cylinder barrel 4 form the outer cavity volume 11 of bar, the junction of piston rod 53 and piston 51, are provided with Air-through holes 12；Bar content cavity 10 and the outer cavity volume 11 of bar, are realized by air-through holes 12 and interconnected.The bar interconnected Content cavity 10 and the outer cavity volume 11 of bar, are realized to outside relative closure by the sealing structure of piston 51 and piston rod 53, so as to shape Gas holds in into cylinder；Gas holds and is filled with and maintains the compressed gas for return in cylinder, forms return and resets gas spring.For returning The pressure limit of the compressed gas of journey, set by pressure switch 8.
In addition, in the stomidium of piston one of piston-cylinder bar assembly 5, sealing gasket 52 is installed with, and the right-hand member of middle cover 3 is provided with convex Edge, the two cooperatively forms the mutation device of compressed gas active area with end face seal.
When piston-cylinder bar assembly 5 is in home position, i.e., shown in Fig. 2 during position, 7 right position of two position three-way valve works, and stores The inner chamber of energy cylinder barrel 2, by the porting on rear end cap 1 and two position three-way valve 7, is communicated with air.Piston-cylinder bar assembly 5, in the presence of return resets gas spring gas backpressure, in high order end position.It is fixedly arranged on the sealing gasket of the one end of piston 51 52, contacted with the flange part of the right-hand member of middle cover 3, and elastic deformation is produced, energy storage chamber is isolated with working chamber.In this case, it is living Fill in the relatively areola between 51 left sides and the right side of middle cover 3, referred to as tail chamber.When sealing gasket 52 produces elastic deformation, tail intracavitary Air by the steam vent on middle cover 3, be discharged into air.
When blow cylinder is in energy accumulating state shown in Fig. 3,7 left position of two position three-way valve work, compressed air passes through rear end Porting on lid 1, into the inner chamber of accumulation of energy cylinder barrel 2.It is only living because the bellmouth orifice right-hand member diameter among middle cover 3 is smaller 1/3 or so of 51 diameters is filled in, its cross-sectional area is only 1/9 or so of the area of piston 51, and therefore, the compression in energy storage chamber 9 is empty Gas, pressure are needed to reach certain critical value, and piston-cylinder bar assembly 5 can be promoted to move right.
Once the compressed air in energy storage chamber 9, when pressure reaches the critical value of impact triggering, pass through 3 middle loudspeaker of middle cover The power that hole is acted on the left side of piston 51, with regard to return can be overcome to reset the reverberation matrix method and frictional force of gas spring so that fixed Sealing gasket 52 on the left side of piston 51, depart from the flange part of the right-hand member of middle cover 3.Depart from the right-hand member flange of middle cover 3 in sealing gasket 52 Portion in a flash, the area that compressed air is acted on the left side of piston 51, suddenly by the face of the middle bellmouth orifice right-hand member of middle cover 3 Product, the whole cross-sectional area of piston 51 is expanded to quickly, active area moment is expanded to 9 times or so, thus in working chamber Interior formation air pressure shock wave.The air pressure shock wave, forces piston-cylinder bar assembly 5, is moved right with great acceleration, energy The very big instant impact of enough output, externally acting.As shown in Figure 4.
During into the impact outburst stage, the compressed gas of the outer cavity volume 11 of bar, by air-through holes 12, part is flowed into bar Cavity volume 10, return reset gas spring to the back pressure of the right side of piston 51, increased.But due to the volume of cavity volume 11 outside bar, It is significantly less than the volume of bar content cavity 10, according to the state equation p of perfect gas1T1V1=p2T2V2Understand, return resets gas bullet Spring is limited to the back pressure of the right side of piston 51, increase rate.The most key is a little that it is closing that gas, which holds, in cylinder, not gas Direction of flow air, thus impact noise is very low.Because noise pollution is minimum, so the applicable field of blow cylinder can be significantly expanded Close, and enable to blow cylinder to develop to major diameter direction.
Impact the outburst stage terminate after, i.e., piston-cylinder bar assembly 5 export very big instant impact externally acting with Afterwards, two position three-way valve 6 switches to right position work, rodless cavity and the UNICOM of energy storage chamber 9 of blow cylinder, by rear end cap 1 again The valve port of port and two position three-way valve 6, leads to air.Return compressed gas in bar content cavity 10, passes through air circulation Hole 12, part flow into the outer cavity volume 11 of bar, and return resets the power that gas spring is acted on the right side of piston 51, promotes piston-work Stopper rod component 5 carries out return reset to left movement.Under the state, the pressure that gas holds in cylinder gradually decreases；Equally, according to The state equation p of perfect gas1T1V1=p2T2V2Understand, the pressure drop low amplitude that gas holds in cylinder is limited.As shown in Figure 5.
Finally, the return of piston-cylinder bar assembly 5 resets to home position as shown in Figure 2, i.e. high order end position.
It can be appreciated that return back pressure of the return reset gas spring to the right side of piston 51, and the return thrust formed, only Need to overcome the frictional force of piston-cylinder bar assembly 5, relative value is very little.Thus, return resets gas bullet in cylinder of the present invention The energy-saving and noise-reducing single-acting blow cylinder of spring, compared with the excessive traditional double acting blow cylinder of existing return power consumption, energy-conservation Effect is extremely notable.
Into cylinder, gas holds and is filled with and maintains the control device of return compressed gas, can there is many kinds of technical schemes, this It will not go into details as space is limited at place.No matter cylinder is under which kind of working condition, as long as the pressure that gas holds in cylinder, because the reason such as leakage And when being less than the minimum pressure that pressure switch 8 is set, control system will send signal, and compressed air will be filled with cylinder from outside Interior gas holds.And once gas holds the maximum pressure that pressure reaches the setting of pressure switch 8 in cylinder, control system can send signal again and stop Only inflate., can be according to the actual friction of each cylinder because gas holds the active force that the return to be formed resets gas spring in cylinder Power sets to carry out scene adjustment to pressure switch 8, so return active force redundancy can be reduced to greatest extent.This point, The existing single-acting blow cylinder of spring reset return, may not accomplish.In addition need what is especially pointed out It is that gas in cylinder is held and is inflated, usually in order to supplement leakage, its number is seldom.
The mutation device of compressed gas active area in the course of work, it is possibility to have multiple technologies scheme, mainly have at present End face seal seals two major classes with the face of cylinder.For the blow cylinder of piston rod component movement, end face seal structure is more It is simple and reliable, therefore present invention preferably employs end face seal structure.
It should be strongly noted that the return in cylinder of the present invention resets gas spring, with existing gas spring, such as nitrogen Gas spring etc., is essentially different.Existing gas spring, such as nitrogen spring, are a relatively independent packaged units, root Originally can not be used in cylinder interior.It is to hold self-assembling formation using gas in cylinder and the return in cylinder of the present invention resets gas spring, Need not take up any axial space.
Above-described embodiment is simply to illustrate that the innovation thinking and technical characterstic of the present invention, but protection scope of the present invention is simultaneously It is not limited to above-mentioned specific embodiment.It is all according to innovation thinking of the present invention essence with technical characterstic and carried out each The equivalence changes of the modification, particularly sealing structure, control device and piston-cylinder bar assembly of kind equivalence changes or locality Deng should all be included within the scope of the present invention.

Claims (2)

  1. A kind of 1. energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder, it is characterised in that：Piston rod For hollow form, bar content cavity is formed between piston, piston rod；The bar content cavity is interconnected and to outside with the outer cavity volume of bar Relative closure, form gas in cylinder and hold；Gas holds and is filled with and maintains the compressed gas for return in the cylinder, forms return and resets Gas spring.
  2. A kind of 2. energy-saving and noise-reducing single-acting impact gas that gas spring is resetted with return in cylinder according to claim 1 Cylinder, it is characterised in that：Between piston one end of piston-cylinder bar assembly and middle cover, with end face seal structure, compressed gas is formed The mutation device of active area.
CN201610261791.2A 2016-04-26 2016-04-26 A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder Active CN105673616B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610261791.2A CN105673616B (en) 2016-04-26 2016-04-26 A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610261791.2A CN105673616B (en) 2016-04-26 2016-04-26 A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder

Publications (2)

Publication Number Publication Date
CN105673616A CN105673616A (en) 2016-06-15
CN105673616B true CN105673616B (en) 2018-01-12

Family

ID=56215600

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610261791.2A Active CN105673616B (en) 2016-04-26 2016-04-26 A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder

Country Status (1)

Country Link
CN (1) CN105673616B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108869447B (en) * 2018-09-04 2019-11-29 哈尔滨工业大学 A kind of change effective active area hydraulic cylinder
CN115163604B (en) * 2022-05-23 2023-06-16 马鞍山市天成液压机械制造有限公司 Vibration reduction hydraulic cylinder with buffering capacity

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1258715A1 (en) * 1983-04-01 1986-09-23 Ленинградский Кораблестроительный Институт Device for damping vibrations of spring-loaded mass with recuperation of damping energy
DE3813021A1 (en) * 1988-04-19 1989-11-02 Guenther Hahn Gas spring
JP3398467B2 (en) * 1994-04-28 2003-04-21 株式会社ショーワ Hydraulic shock absorber
JP2000027808A (en) * 1998-07-13 2000-01-25 Koganei Corp Linear reciprocating motion device
JP4667331B2 (en) * 2006-09-05 2011-04-13 カヤバ工業株式会社 Pneumatic shock absorber
CN102418724B (en) * 2011-11-04 2013-06-19 武汉工程大学 Adjustable impact cylinder
CN202811640U (en) * 2012-09-26 2013-03-20 东莞市巨力气动液压设备有限公司 Impact air cylinder
CN103982487A (en) * 2014-05-29 2014-08-13 苏州大学张家港工业技术研究院 Impacting air cylinder

Also Published As

Publication number Publication date
CN105673616A (en) 2016-06-15

Similar Documents

Publication Publication Date Title
CN205858848U (en) There is the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder
CN201554719U (en) High-speed two-out bar hydraulic cylinder cushion device
CN105673616B (en) A kind of energy-saving and noise-reducing single-acting blow cylinder that gas spring is resetted with return in cylinder
CN201636116U (en) Gap cushioning hydraulic cylinder
CN102345652A (en) Buffering type cylinder
CN206144898U (en) Novel hydraulic cylinder
CN109026902B (en) Multi-damping-hole-type buffer hydraulic cylinder with movable cylinder head
CN104930017B (en) Hydraulic device capable of adjusting buffer energy on two ends
CN204900642U (en) Two -way hydraulic absorber
CN201412411Y (en) Buffer cylinder
CN202628674U (en) Air cylinder cushion device
CN103321985A (en) Bidirectional impact cylinder
CN108278244A (en) Hydraulic cylinder for drawing mechanism
CN104564610A (en) Non-clearance pneumatic oil cylinder
CN111425483B (en) Oil cylinder tail end buffering device
CN207049114U (en) A kind of buffering hydraulic cylinder
CN210978328U (en) Hydraulic buffer with adjustable damping
CN205877053U (en) Two -way hydraulic absorber
CN203770288U (en) Pneumatic moving barrel
CN102705299A (en) Buffering device for air cylinder
CN111425484A (en) Oil cylinder tail end buffering device
CN208041280U (en) Pneumatic actuator hydraulic type Buffer Unit
CN201358978Y (en) Buffering mechanism for piston buffer cavity type hydraulic actuating cylinder
CN203223514U (en) Outer-circulation type oil damper
CN205533534U (en) Cylinder body motion is energy -conserving cylinder that strikes of low noise for nonoculture

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant