CN106369010B - A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method - Google Patents
A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method Download PDFInfo
- Publication number
- CN106369010B CN106369010B CN201610957056.5A CN201610957056A CN106369010B CN 106369010 B CN106369010 B CN 106369010B CN 201610957056 A CN201610957056 A CN 201610957056A CN 106369010 B CN106369010 B CN 106369010B
- Authority
- CN
- China
- Prior art keywords
- valve
- cylinder
- formula
- unit
- overflow valve
- 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.)
- Expired - Fee Related
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
-
- 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
- F15B15/202—Externally-operated valves mounted in or on the actuator
-
- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Abstract
The invention discloses a kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method；Including cylinder block, cylinder end piece and buffer unit；Cylinder block is attached with cylinder end piece by screw thread, and buffer unit is installed on cylinder end piece by clearance fit；Buffer unit is main part of the invention, it is internal including unidirectional valve cell, fast row's formula relief valve unit, fixed cavity volume unit and common relief valve unit etc., interconnected between unit by the connected pore channel in buffer unit, the fabrication hole in each duct is blocked using plug, it is ensured that the air-tightness of whole device.The present apparatus absorbs the most initial kinetic energy of cylinder piston by arranging the low-voltage dead lock of formula overflow valve soon and acting on, and by the control of the pressure of the cylinder buffering chamber after exhaust close to cylinder driving chamber pressure size, realize that low speed of the high-speed cylinder during high-speed cruising steadily stops, avoiding the occurrence of the phenomenon of piston impact end cap or bounce-back.
Description
Technical field
The present invention relates to the buffer unit of Cushion of High-speed Pneumatic Cylinders, more particularly to a kind of adjustable Cushion of High-speed Pneumatic Cylinders device
With method.
Background technology
The high speed of cylinder operation is the inevitable development trend of modern pneumatics, and cylinder stops during high-speed cruising
When, since piston has larger kinetic energy, vibration easily is produced there is a phenomenon where clashing with end cap, cylinder is caused very
Serious infringement.To solve the buffer problem of high-speed cylinder, many research invention personnel propose some cylinder buffer devices：
The patent of invention of granary AudioCodes mechanical equipment Co., Ltd：Cylinder buffer device.The invention passes through gas in cushion chamber
The buffered throttle valve discharge of body, gas pressure constantly raise, and producing an opposition to piston forces piston to slow down to subtract
Slow shock of the piston to cylinder cap, until piston stops, avoiding the shock and vibration that piston is produced with cylinder cap by shock, reaches
The purpose of buffering.The patent of invention substantially belongs to needle-valve throttling buffering mode, its buffer capacity is limited and the invention is not discussed
State the buffering applicability to high-speed cylinder.
The utility model patent of Ningbo Yadeke Automatic Chemical Industry Co., Ltd.：Cylinder buffering structure.The patent is in cylinder
End set have exhaust passage and buffer channel, the outside of cylinder body is provided with exhaust outlet, respectively with exhaust passage and
Buffer channel is connected, in the lateral adjusting screw for being additionally provided with control buffer channel flow of buffer channel.Piston rod is expert at
Cheng Zhong, is mainly vented by exhaust passage, when piston rod movement is to end of travel, is controlled by piston rod and is closed exhaust passage, only
It is vented by buffer channel, so as to fulfill the buffering of piston rod stroke end.The advantages of patent is that requirement on machining accuracy is not required
Higher seal groove and piston rod end, the requirement to the accuracy of manufacture is relatively low, still, due to being not provided with cushion seal circle,
The air-tightness of the structure is poor, can produce the hypodynamic phenomenon of buffer capacity, is not suitable for the buffering of high-speed cylinder.
The patent of invention of the Maritime Affairs University Of Dalian：A kind of Cushion of High-speed Pneumatic Cylinders device.Buffer structure is divided into spool by the invention
Epicoele and spool cavity of resorption, spool upper chamber is closed when buffering starts, and spool lower chambers are connected with cushion chamber, due to buffering
The rise of cavity pressure, promotes buffering spool to move up to buffer position, and buffering spool at this time, two cavity pressures are equal up and down, buffering
Spool blocks exhausting-gas hole completely, is flowed out without gas, and buffer cavity pressure continues to raise, makes the movement velocity of piston reduce, reach
To the purpose of buffering.Matching somebody with somebody between buffering spool and the valve body of involved buffer structure is combined into clearance fit in the invention, when
Buffer cavity pressure causes gas leakage phenomenon compared with Gao Shihui, so as to cause buffer capacity insufficient, influences buffering effect.
The utility model patent of the Maritime Affairs University Of Dalian：Line pressure shift reaction type cylinder buffer device.Buffering in the patent
Structure is matched with the buffer plunger with annular groove, and the chamber that spool and valve body are formed is divided into upper and lower chamber, wherein epicoele
Room is connected directly with cushion chamber, and the connection status of lower chambers and cushion chamber is controlled by the annular groove on buffer plunger.Buffering is opened
During the beginning, spool upper and lower chamber pressure is equal, and spool is in initial position, as the progress of buffering and the continuous of piston are advanced, valve
Core lower chambers replace break-make with cushion chamber, and spool moves up and down under the action of upper and lower cavity pressure, controls discharge orifice
Opening degree size, to control the capacity size of cushion chamber, until piston reaches stroke end.Buffer structure in the patent needs
To be matched with the buffer plunger with annular groove and annular convex platform, and for different cushion stroke length, buffer plunger
Annular groove and annular convex platform between quantity and the parameter such as width it is also different, therefore, the buffer unit is to common high speed gas
Cylinder applicability is not strong.
To sum up, at home in existing cylinder buffer device, it is less to be related to the correlation technique of Cushion of High-speed Pneumatic Cylinders device, existing
The common cylinder buffering technology having is not strong to the applicability of high-speed cylinder, be easy to cause the phenomenon of piston slap end cap.Described
Cushion of High-speed Pneumatic Cylinders device in, it is poor there are leakproofness, buffer capacity deficiency or it is poor for applicability etc. to common high-speed cylinder
Problem.
The content of the invention
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art and deficiency, there is provided it is a kind of it is simple in structure, can basis
The adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method that different working conditions are adjusted；Cylinder can be achieved in high-speed cruising
Soft stop is stopped, and prevents the generation that cylinder piston hits end cap and piston rebound vibration, and when cylinder working condition changes,
The adjusting screw that can be adjusted on buffer unit is adjusted its buffer capacity, it is ensured that high-speed cylinder is in comfort cushioning state
Under.
The present invention is achieved through the following technical solutions：
A kind of adjustable Cushion of High-speed Pneumatic Cylinders device, including cylinder barrel 3, piston rod 1, be connected on piston rod 1
Cylinder piston 6 and the buffer plunger of piston both sides 2, the cylinder end piece 15 being connected with cylinder barrel 3 by screw thread, in cylinder
The left side of end cap 15 is provided with the buffer dividing plate 12 being threadedly coupled with end cap；Buffer unit is additionally provided with cylinder end piece 15
18 and buffer unit fixing nut 20, which is arranged on 15 right part of cylinder end piece, for fixing
Buffer unit 18, prevents it from being moved axially on cylinder end piece 15；
18 top of buffer unit is provided with the axially mounted through hole 18a that sealing cooperation is carried out with cylinder end piece 15, hangs down
Buffer unit inlet channel 18b and buffer unit exhaust are directly had inside buffer unit 18 in axially mounted through hole 18a
Passage 18g；The buffer unit inlet channel 18b connection cylinder bufferings chamber 10, the buffer unit exhaust passage 18g connects gas
Cylinder plug chamber 19；
The inside of buffer unit 18 includes：First unidirectional valve cell 22, the second unidirectional valve cell 25, fast row's formula overflow valve
Unit 24, fixed cavity volume unit 27, common relief valve unit 26；The first unidirectional 22 and second unidirectional valve cell 25 of valve cell
Valve core structure it is identical；
The first unidirectional valve cell 22 includes check valve cavity volume 31, inner elements of check valve 30, inner elements of check valve end part seal
Piece 29, unidirectional valve cage 28, check valve resetting spring 32 and check valve tightening nut 33；30 both ends of inner elements of check valve are all
Left end groove 30a and right end groove 30b are provided with, left end groove 30a is used to install inner elements of check valve end part seal piece 29, and right end is recessed
The radial hole 30c of connection right end groove 30b is provided with groove 30b；It is unidirectional that 30 right end of inner elements of check valve is provided with installation
The axial annular groove of valve resetting spring 32, unidirectional 28 outer wall of valve cage are provided with the radial ringed of mounting O-shaped sealing ring
Groove, 33 left side of check valve tightening nut are provided with the axial annular groove of installation check valve resetting spring 32, unidirectionally
33 middle part outer wall of valve tightening nut is provided with the radial ringed groove of mounting O-shaped sealing ring, the right end of check valve tightening nut 33
External screw thread is machined with, is connected through a screw thread and screws in buffer unit 18；
Fast row's formula relief valve unit 24 includes cavity volume 36, middle cavity volume 47, lower cavity volume 38, fast row on fast row's formula overflow valve
Spool 37, fast row's formula overflow valve bottom spool 45, fast to arrange formula overflow valve overflow port in formula overflow valve upper valve core 35, fast row's formula overflow valve
Diaphragm seal 48, fast row's formula relief valve sleeve 39, spool preloading spring 44, spring support seat 40, tightening nut 41, pre-loading screw 42
And locking nut 43；Cavity volume 36 passes through in buffer unit inlet channel 18b and cylinder end piece on fast row's formula overflow valve
Axial channel 13 connects cylinder buffering chamber 10；Cavity volume 47 and lower cavity volume 38 by arranging formula overflow valve soon in fast row's formula overflow valve
Be connected with check valve two duct 18d and check valve one be connected with fast row's formula overflow valve duct 18c respectively with the second unidirectional valve cell
25 are connected with the first unidirectional valve cell 22；It is blind that the fast 35 left end cylindrical surface of row's formula overflow valve upper valve core is machined with an axial direction
A hole 35a and radial hole 35b, intermeshes between axial blind hole 35a and radial hole 35b；Fast row's formula overflow valve
35 right end of upper valve core is machined with an external screw thread；37 left side of spool is machined with a groove and one in fast row's formula overflow valve
Axial thread blind hole, groove is used to install arranges formula overflow valve overflow hole seal piece 48 soon, on tapped blind hole and fast row's formula overflow valve
Spool 35 is threadedly coupled and diaphragm seal 48 is compressed in junction；The middle part of spool 37 is set in fast row's formula overflow valve
The radial ringed groove of mounting O-shaped sealing ring is equipped with, right end is machined with an external screw thread；Fast 45 liang of row's formula overflow valve bottom spool
Side end face is machined with an axial thread blind hole respectively, and middle part is machined with the radial ringed groove of two installation sealing rings；It is described
Fast 45 left end of row's formula overflow valve bottom spool is threadedly coupled with spool 37 in fast row's formula overflow valve, right end and spring support seat 40
It is threadedly coupled；40 left end of spring support seat is machined with an external screw thread, and middle part has been provided with the protrusion circle of position-limiting action
Platform；The middle part of pre-loading screw 42 has been also equipped with the raised round platform of position-limiting action, and right end is machined with an external screw thread；The spool
Preloading spring 44 is installed between two raised round platforms, and spool preloading spring 44 can be carried out by the position-limiting action of raised round platform
Compression pretension is again locked pre-loading screw 42 by locking nut 43, and fast row's formula overflow valve overflow port is sealed, the fast row
39 outer wall of formula relief valve sleeve is both provided with the radial ringed groove of mounting O-shaped sealing ring；
The fixed cavity volume unit 27 includes cylindrical chamber 49 and the tightening nut 50 for being threaded in its end；It is described
Tightening nut 50 is machined with an axial thread through hole, the convenient pneumatic fast adapter of installation, and 50 left end of tightening nut also adds
Work has a groove and processes the radial ringed groove of mounting O-shaped sealing ring on the outside；
The common relief valve unit 26 includes on common overflow valve cavity volume 53 under cavity volume 52, common overflow valve, common overflows
Flow valve upper valve core 51, common overflow valve bottom spool 60, common overflow valve overflow hole seal piece 61, common relief valve sleeve 59, general
Logical relief valve spool preloading spring 58, common overflow valve spring support seat 54, common overflow valve tightening nut 57, common overflow valve
Pre-loading screw 56 and common overflow valve locking nut 55；Cavity volume 52 is overflow by fixed cavity volume with common on the common overflow valve
Stream valve connection duct 18f is connected with fixed cavity volume unit 27；Cavity volume 53 is vented by buffer unit under the common overflow valve
Passage 18g is connected with cylinder plunger cavity 19；It is blind that the common 51 left end cylindrical surface of overflow valve upper valve core is machined with an axial direction
A hole 51a and radial hole 51b, intermeshes between axial blind hole 51a and radial hole 51b；On the common overflow valve
51 right end of spool is machined with an external screw thread；Common 60 left side of overflow valve bottom spool is machined with a groove and an axial direction
Tapped blind hole, groove are used to install common overflow valve overflow hole seal piece 61, tapped blind hole and common overflow valve upper valve core 51 into
Row is threadedly coupled and common overflow valve overflow hole seal piece 61 is compressed in junction；The common overflow valve bottom spool 60
Right part outer wall is provided with the radial ringed groove of mounting O-shaped sealing ring, and right side is machined with an axial thread blind hole, for
Common overflow valve spring support seat 54 is connected；Common 54 left end of overflow valve spring support seat is machined with an external screw thread, in
Portion has been provided with the raised round platform of position-limiting action, and common 56 middle part of overflow valve pre-loading screw has been also equipped with position-limiting action
Raised round platform, right end are machined with an external screw thread；The common relief valve spool preloading spring 58 be installed on two raised round platforms it
Between, pretension can be compressed to common relief valve spool preloading spring 58 by the position-limiting action of raised round platform, it is described common excessive
Flow the radial ringed groove that 59 outer wall of valve cage sets mounting O-shaped sealing ring；
The cylinder end piece 15, which is provided with connection cylinder buffering chamber, can accommodate the cylinder plunger cavity 19 of buffer plunger, cylinder end
The left side of lid 15 is provided with the cylinder porting 14 of connection cylinder plunger cavity 19 and atmospheric pressure, and 15 outer wall of cylinder end piece is provided with
Connect the radial ringed groove of buffer unit inlet channel 18b and buffer unit exhaust passage 18g and mounting O-shaped sealing ring；
The left side of cylinder end piece 15 is machined with an internal thread and an external screw thread, and internal thread is attached with buffer dividing plate 12, external screw thread
It is attached with cylinder barrel 3, junction is additionally provided with O-ring seal and is sealed；It is machined with 12 inner wall of buffer dividing plate
The annular notches of one-way sealing seal 11 are installed, when buffer plunger 2 is contacted with one-way sealing seal 11 then in 6 right side shape of cylinder piston
Into closed cylinder buffering chamber 10, cushioning effect is played.
A supply is provided with the radial ringed groove of connection buffer unit inlet channel 18b on the cylinder end piece 15
10 gas of cylinder cushion chamber is discharged directly to the fixed orifice 17 of cylinder plunger cavity 19.
Unit in the buffer unit 18 is integrated in one, between unit by buffer unit 18 inside
Connected pore channel is attached mutually.
Fixation cavity volume unit 27 in the buffer unit 18 is attached with pressure reducing valve 21, is entered in cylinder piston 6 slow
Before rushing the stage, operating pressure gas is first full of in fixed cavity volume unit 27；By adjusting fast row's formula relief valve unit 24 respectively
With the pre-loading screw of common relief valve unit 26, to change the buffer capacity of buffer unit 18 so that high-speed cylinder is different
It is with can realizing low speed steady when being run under operating condition to stop.
Include magnet 7, piston packing 8, piston abrasion-proof ring 9 and cushion pad 5 on the cylinder piston 6.
The way to play for time of the adjustable Cushion of High-speed Pneumatic Cylinders device of the present invention, includes the following steps：
Before cylinder piston 6 enters buffer stage, operating pressure gas is filled with by fixed cavity volume list by pressure reducing valve 21
In member 27, when buffer plunger 2 is contacted with one-way sealing seal 11, form a closed cylinder on the right side of cylinder piston 6 and delay
Chamber 10 is rushed, due to the compression of cylinder piston 6, the gas pressure in cylinder buffering chamber 10 raises rapidly, and to cylinder piston 6
Reverse motive force is produced, forces cylinder piston 6 to slow down, the gas in cylinder buffering chamber 10 passes through axial hole in cylinder end piece at this time
Road 13 and buffer unit inlet channel 18b are connected with 36 and first unidirectional valve cell 22 of cavity volume on fast row's formula overflow valve；
When 6 speed of cylinder piston gradually decreases to smaller, the gas pressure in cylinder buffering chamber 10 reaches fast row at this time
The Opening pressure of formula relief valve unit 24, the fast spool setting in motion for arranging formula relief valve unit 24, while under fast row's formula overflow valve
Cavity volume 38 is connected with the check valve cavity volume 31 of the first unidirectional valve cell 22, and the gases at high pressure in cylinder buffering chamber 10 overflow in fast row's formula
The effective active area flowed on 24 spool of valve cell increases, and to accelerate the opening speed of fast row's formula relief valve unit 24, realizes fast
The purpose of speed exhaust；Due to the single effect of the first unidirectional valve cell 22 so that act on fast row's formula overflow valve bottom spool 45
Pressure remain at high pressure conditions so that fast row's formula relief valve unit 24 keeps normal in the buffering course of cylinder piston 6
Open state, and then avoid closing in advance due to being vented slow or fast row's formula relief valve unit 24 and influencing buffering effect；
After fast row's formula relief valve unit 24 is opened, the gases at high pressure in cylinder buffering chamber 10 by arranging in formula overflow valve soon
Cavity volume 47 is connected duct 18d with check valve two from fast row's formula overflow valve and flows into the second unidirectional valve cell 25, passes through check valve two
It is connected duct 18e with fixed cavity volume to flow into fixed cavity volume unit 27, the gases at high pressure in cylinder buffering chamber 10 are because of exhaust at this time
Effect will decline rapidly, and the gas pressure fixed in cavity volume unit 27 will gradually rise.
Due to the gas in fixed cavity volume unit 27 be connected all the time by fixed cavity volume with common overflow valve duct 18f with it is general
Cavity volume 52 is connected on logical overflow valve, and the Opening pressure of common relief valve unit 26 is passed through common overflow valve pre-loading screw 56
Adjusting makes it be slightly larger than operating pressure, and when the pressure rise in fixed cavity volume unit 27, common relief valve unit can be passed through
26 discharges in time, and due to the aeration of pressure reducing valve 21, the gas pressure fixed in cavity volume unit 27 will be kept close to work
Make pressure size, so that the gas pressure in cylinder buffering chamber 10 is big with the pressure in cylinder driving chamber 4 after exhaust terminates
It is small close so that the stress at 6 both ends of cylinder piston is close, cylinder piston 6 can low speed smoothly reach stroke end, avoid sending out
The phenomenon of raw impact end cap or piston rebound.
After cylinder piston 6 reaches stroke end, residual gas in cylinder buffering chamber 10 is from 17 row of fixed orifice
Go out, and arrange discharge orifice 34 row of the gas under formula overflow valve in cavity volume 38 then by being arranged on check valve tightening nut 33 soon
Go out, with the discharge of gas, fast formula relief valve unit 24 of arranging will be re-closing off under the action of spool preloading spring 44, be cylinder
Buffering next time prepare；
When the operating condition of high-speed cylinder changes, by adjusting fast row's formula relief valve unit 24 and common relief valve unit
Pre-loading screw on 26 makes cylinder piston 6 in high-speed cruising, begins to change buffer capacity of the buffer unit 18 to high-speed cylinder
Stroke end is reached with low speed eventually, realizes buffering.
The present invention is had the following advantages and effect relative to the prior art：
The present invention carries out low-voltage dead lock using fast row's formula overflow valve to the cushion chamber of cylinder, ensure that sufficiently high buffering is inhaled
Receipts ability, and the gases at high pressure that can be designed so that in cushion chamber for arranging formula soon can be timely when cylinder piston speed is relatively low
Ground is quickly discharged, and avoids that there is a phenomenon where piston rebound.
The gas of cylinder buffering intracavitary is expelled in the fixation cavity volume full of operating pressure by the present invention can control buffering
Pressure size after chamber exhaust is close with cylinder driving chamber pressure size, avoids causing piston since buffer cavity pressure is too small again
The phenomenon of secondary acceleration shock end cap occurs.It can be realized without impact, without bounce-back using the high-speed cylinder of buffer unit into row buffering
Steady stopping, and be both provided with adjusting screw in row's formula overflow valve and common overflow valve soon, can be according to high-speed cylinder
Different operating statuses adjusted into row buffering, regulation performance is good, it is ensured that high-speed cylinder all may be used under different operating statuses
With with good cushion performance.
Whole buffer unit of the invention uses integrated structure design, and integrated degree is high and for common high speed
Cylinder adaptability is stronger.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is buffer unit side structure schematic diagram.
Fig. 2 a are Fig. 2 another sides structure diagram.
Fig. 2 b are the cross-sectional view of Fig. 2.
Fig. 3 is the schematic cross-sectional view at A-A in 2b.
Fig. 3 a are the close-up schematic view of the first unidirectional valve cell 22 in Fig. 3.
Fig. 3 b are the close-up schematic view of fast row's formula relief valve unit 24 in Fig. 3.
Fig. 4 is the schematic cross-sectional view at B-B in Fig. 2 b.
Fig. 4 a are the close-up schematic view that cavity volume unit 27 is fixed in Fig. 4.
Fig. 4 b are the close-up schematic view of the second unidirectional valve cell 25 in Fig. 4.
Fig. 5 is the schematic cross-sectional view at C-C in Fig. 2 b.
Fig. 5 a are the close-up schematic view of common relief valve unit 26 in Fig. 5.
Fig. 6 is the schematic cross-sectional view at D-D in Fig. 2 b.
Fig. 7 is the schematic cross-sectional view at E-E in Fig. 2 b.
Embodiment
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Fig. 1 to 7.The invention discloses a kind of adjustable Cushion of High-speed Pneumatic Cylinders device, including cylinder barrel 3,
Piston rod 1, the buffer plunger 2 of the cylinder piston 6 being connected on piston rod 1 and piston both sides and cylinder barrel 3 pass through screw thread
The cylinder end piece 15 that is connected, be provided with the buffer dividing plate 12 being threadedly coupled with end cap in the left side of cylinder end piece 15；In gas
Buffer unit 18 and buffer unit fixing nut 20 are additionally provided with cylinder end cap 15, which is arranged on
15 right part of cylinder end piece, for fixing buffer unit 18, prevents it from being moved axially on cylinder end piece 15；
18 top of buffer unit is provided with the axially mounted through hole 18a that sealing cooperation is carried out with cylinder end piece 15, hangs down
Buffer unit inlet channel 18b and buffer unit exhaust are directly had inside buffer unit 18 in axially mounted through hole 18a
Passage 18g；The buffer unit inlet channel 18b connection cylinder bufferings chamber 10, the buffer unit exhaust passage 18g connects gas
Cylinder plug chamber 19；
The inside of buffer unit 18 includes：First unidirectional valve cell 22, the second unidirectional valve cell 25, fast row's formula overflow valve
Unit 24, fixed cavity volume unit 27, common relief valve unit 26；The first unidirectional 22 and second unidirectional valve cell 25 of valve cell
Valve core structure it is identical；
The first unidirectional valve cell 22 includes check valve cavity volume 31, inner elements of check valve 30, inner elements of check valve end part seal
Piece 29, unidirectional valve cage 28, check valve resetting spring 32 and check valve tightening nut 33；30 both ends of inner elements of check valve are all
Left end groove 30a and right end groove 30b are provided with, left end groove 30a is used to install inner elements of check valve end part seal piece 29, and right end is recessed
The radial hole 30c of connection right end groove 30b is provided with groove 30b；It is unidirectional that 30 right end of inner elements of check valve is provided with installation
The axial annular groove of valve resetting spring 32, unidirectional 28 outer wall of valve cage are provided with the radial ringed of mounting O-shaped sealing ring
Groove, 33 left side of check valve tightening nut are provided with the axial annular groove of installation check valve resetting spring 32, unidirectionally
33 middle part outer wall of valve tightening nut is provided with the radial ringed groove of mounting O-shaped sealing ring, the right end of check valve tightening nut 33
External screw thread is machined with, is connected through a screw thread and screws in buffer unit 18；
Fast row's formula relief valve unit 24 includes cavity volume 36, middle cavity volume 47, lower cavity volume 38, fast row on fast row's formula overflow valve
Spool 37, fast row's formula overflow valve bottom spool 45, fast to arrange formula overflow valve overflow port in formula overflow valve upper valve core 35, fast row's formula overflow valve
Diaphragm seal 48, fast row's formula relief valve sleeve 39, spool preloading spring 44, spring support seat 40, tightening nut 41, pre-loading screw 42
And locking nut 43；Cavity volume 36 passes through in buffer unit inlet channel 18b and cylinder end piece on fast row's formula overflow valve
Axial channel 13 connects cylinder buffering chamber 10；Cavity volume 47 and lower cavity volume 38 by arranging formula overflow valve soon in fast row's formula overflow valve
Be connected with check valve two duct 18d and check valve one be connected with fast row's formula overflow valve duct 18c respectively with the second unidirectional valve cell
25 are connected with the first unidirectional valve cell 22；It is blind that the fast 35 left end cylindrical surface of row's formula overflow valve upper valve core is machined with an axial direction
A hole 35a and radial hole 35b, intermeshes between axial blind hole 35a and radial hole 35b；Fast row's formula overflow valve
35 right end of upper valve core is machined with an external screw thread；37 left side of spool is machined with a groove and one in fast row's formula overflow valve
Axial thread blind hole, groove is used to install arranges formula overflow valve overflow hole seal piece 48 soon, on tapped blind hole and fast row's formula overflow valve
Spool 35 is threadedly coupled and diaphragm seal 48 is compressed in junction；The middle part of spool 37 is set in fast row's formula overflow valve
The radial ringed groove of mounting O-shaped sealing ring is equipped with, right end is machined with an external screw thread；Fast 45 liang of row's formula overflow valve bottom spool
Side end face is machined with an axial thread blind hole respectively, and middle part is machined with the radial ringed groove of two installation sealing rings；It is described
Fast 45 left end of row's formula overflow valve bottom spool is threadedly coupled with spool 37 in fast row's formula overflow valve, right end and spring support seat 40
It is threadedly coupled；40 left end of spring support seat is machined with an external screw thread, and middle part has been provided with the protrusion circle of position-limiting action
Platform；The middle part of pre-loading screw 42 has been also equipped with the raised round platform of position-limiting action, and right end is machined with an external screw thread；The spool
Preloading spring 44 is installed between two raised round platforms, and spool preloading spring 44 can be carried out by the position-limiting action of raised round platform
Compression pretension is again locked pre-loading screw 42 by locking nut 43, and fast row's formula overflow valve overflow port is sealed, the fast row
39 outer wall of formula relief valve sleeve is both provided with the radial ringed groove of mounting O-shaped sealing ring；
The fixed cavity volume unit 27 includes cylindrical chamber 49 and the tightening nut 50 for being threaded in its end；It is described
Tightening nut 50 is machined with an axial thread through hole, the convenient pneumatic fast adapter of installation, and 50 left end of tightening nut also adds
Work has a groove and processes the radial ringed groove of mounting O-shaped sealing ring on the outside；
The common relief valve unit 26 includes on common overflow valve cavity volume 53 under cavity volume 52, common overflow valve, common overflows
Flow valve upper valve core 51, common overflow valve bottom spool 60, common overflow valve overflow hole seal piece 61, common relief valve sleeve 59, general
Logical relief valve spool preloading spring 58, common overflow valve spring support seat 54, common overflow valve tightening nut 57, common overflow valve
Pre-loading screw 56 and common overflow valve locking nut 55；Cavity volume 52 is overflow by fixed cavity volume with common on the common overflow valve
Stream valve connection duct 18f is connected with fixed cavity volume unit 27；Cavity volume 53 is vented by buffer unit under the common overflow valve
Passage 18g is connected with cylinder plunger cavity 19；It is blind that the common 51 left end cylindrical surface of overflow valve upper valve core is machined with an axial direction
A hole 51a and radial hole 51b, intermeshes between axial blind hole 51a and radial hole 51b；On the common overflow valve
51 right end of spool is machined with an external screw thread；Common 60 left side of overflow valve bottom spool is machined with a groove and an axial direction
Tapped blind hole, groove are used to install common overflow valve overflow hole seal piece 61, tapped blind hole and common overflow valve upper valve core 51 into
Row is threadedly coupled and common overflow valve overflow hole seal piece 61 is compressed in junction；The common overflow valve bottom spool 60
Right part outer wall is provided with the radial ringed groove of mounting O-shaped sealing ring, and right side is machined with an axial thread blind hole, for
Common overflow valve spring support seat 54 is connected；Common 54 left end of overflow valve spring support seat is machined with an external screw thread, in
Portion has been provided with the raised round platform of position-limiting action, and common 56 middle part of overflow valve pre-loading screw has been also equipped with position-limiting action
Raised round platform, right end are machined with an external screw thread；The common relief valve spool preloading spring 58 be installed on two raised round platforms it
Between, pretension can be compressed to common relief valve spool preloading spring 58 by the position-limiting action of raised round platform, it is described common excessive
Flow the radial ringed groove that 59 outer wall of valve cage sets mounting O-shaped sealing ring；
The cylinder end piece 15, which is provided with connection cylinder buffering chamber, can accommodate the cylinder plunger cavity 19 of buffer plunger, cylinder end
The left side of lid 15 is provided with the cylinder porting 14 of connection cylinder plunger cavity 19 and atmospheric pressure, and 15 outer wall of cylinder end piece is provided with
Connect the radial ringed groove of buffer unit inlet channel 18b and buffer unit exhaust passage 18g and mounting O-shaped sealing ring；
The left side of cylinder end piece 15 is machined with an internal thread and an external screw thread, and internal thread is attached with buffer dividing plate 12, external screw thread
It is attached with cylinder barrel 3, junction is additionally provided with O-ring seal and is sealed；It is machined with 12 inner wall of buffer dividing plate
The annular notches of one-way sealing seal 11 are installed, when buffer plunger 2 is contacted with one-way sealing seal 11 then in 6 right side shape of cylinder piston
Into closed cylinder buffering chamber 10, cushioning effect is played.
A supply is provided with the radial ringed groove of connection buffer unit inlet channel 18b on the cylinder end piece 15
10 gas of cylinder cushion chamber is discharged directly to the fixed orifice 17 of cylinder plunger cavity 19；Cylinder end in 17 both sides of fixed orifice
Lid 15 and the joint of buffer unit 18 are equipped with sealing ring 16.
Unit in the buffer unit 18 is integrated in one, between unit by buffer unit 18 inside
Connected pore channel is attached mutually.
Fixation cavity volume unit 27 in the buffer unit 18 is attached with pressure reducing valve 21, is entered in cylinder piston 6 slow
Before rushing the stage, operating pressure gas is first full of in fixed cavity volume unit 27；By adjusting fast row's formula relief valve unit 24 respectively
With the pre-loading screw of common relief valve unit 26, to change the buffer capacity of buffer unit 18 so that high-speed cylinder is different
It is with can realizing low speed steady when being run under operating condition to stop.
Include magnet 7, piston packing 8, piston abrasion-proof ring 9 and cushion pad 5 on the cylinder piston 6.
The way to play for time of the adjustable Cushion of High-speed Pneumatic Cylinders device of the present invention, can be achieved by the steps of：
Before cylinder piston 6 enters buffer stage, operating pressure gas is filled with by fixed cavity volume list by pressure reducing valve 21
In member 27, when buffer plunger 2 is contacted with one-way sealing seal 11, form a closed cylinder on the right side of cylinder piston 6 and delay
Chamber 10 is rushed, due to the compression of cylinder piston 6, the gas pressure in cylinder buffering chamber 10 raises rapidly, and to cylinder piston 6
Reverse motive force is produced, forces cylinder piston 6 to slow down, the gas in cylinder buffering chamber 10 passes through axial hole in cylinder end piece at this time
Road 13 and buffer unit inlet channel 18b are connected (even with 36 and first unidirectional valve cell 22 of cavity volume on fast row's formula overflow valve
It is logical).
When 6 speed of cylinder piston gradually decreases to smaller or close to when stopping, the gas in cylinder buffering chamber 10 at this time
Pressure reaches the Opening pressure of fast row's formula relief valve unit 24, arranges the spool setting in motion of formula relief valve unit 24 soon, while soon
Cavity volume 38 is connected with the check valve cavity volume 31 of the first unidirectional valve cell 22 under row's formula overflow valve, the high pressure gas in cylinder buffering chamber 10
Body is increased in the effective active area soon on 24 spool of row's formula relief valve unit, to accelerate the unlatching of fast row's formula relief valve unit 24
Speed, realizes the purpose of Quick air-discharge；Due to the single effect of the first unidirectional valve cell 22 so that act on fast row's formula overflow valve
Pressure on bottom spool 45 remains at high pressure conditions so that fast row's formula relief valve unit 24 is in the buffered of cylinder piston 6
State is maintained a normally open in journey, and then avoids closing in advance due to being vented slow or fast row's formula relief valve unit 24 and influencing to buffer
Effect.
After fast row's formula relief valve unit 24 is opened, the gases at high pressure in cylinder buffering chamber 10 by arranging in formula overflow valve soon
Cavity volume 47 is connected duct 18d with check valve two from fast row's formula overflow valve and flows into the second unidirectional valve cell 25, passes through check valve two
It is connected duct 18e with fixed cavity volume to flow into fixed cavity volume unit 27, the gases at high pressure in cylinder buffering chamber 10 are because of exhaust at this time
Effect will decline rapidly, and the gas pressure fixed in cavity volume unit 27 will gradually rise.
Due to the gas in fixed cavity volume unit 27 be connected all the time by fixed cavity volume with common overflow valve duct 18f with it is general
Cavity volume 52 is connected on logical overflow valve, and the Opening pressure of common relief valve unit 26 is passed through common overflow valve pre-loading screw 56
It is adjusted to be slightly larger than operating pressure.And when the pressure rise in fixed cavity volume unit 27, common relief valve unit 26 can be passed through
Discharge in time, and due to the aeration of pressure reducing valve 21, the gas pressure fixed in cavity volume unit 27 will be kept close to work
Pressure size so that gas pressure in cylinder buffering chamber 10 after exhaust terminates with the pressure size in cylinder driving chamber 4
It is close so that the stress at 6 both ends of cylinder piston is close, cylinder piston 6 can low speed smoothly reach stroke end, avoid occurring
Impact the phenomenon of end cap or piston rebound.
After cylinder piston 6 reaches stroke end, residual gas in cylinder buffering chamber 10 is from 17 row of fixed orifice
Go out, and arrange discharge orifice 34 row of the gas under formula overflow valve in cavity volume 38 then by being arranged on check valve tightening nut 33 soon
Go out, with the discharge of gas, fast formula relief valve unit 24 of arranging will be re-closing off under the action of spool preloading spring 44, be cylinder
Buffering next time prepare.
When the operating condition of high-speed cylinder changes, by adjusting fast row's formula relief valve unit 24 and common relief valve unit
Pre-loading screw on 26 makes cylinder piston 6 in high-speed cruising, begins to change buffer capacity of the buffer unit 18 to high-speed cylinder
Stroke end is reached with low speed eventually, realizes buffering.
The effect of first unidirectional valve cell 22 is that the gases at high pressure for ensureing in cylinder buffering chamber 10 unidirectionally flow into fast row's formula and overflow
Flow under valve in cavity volume 38, ensure that the gas pressure under fast row's formula overflow valve in cavity volume 38 remains at during cylinder buffering
High pressure conditions so that fast row's formula relief valve unit 24 maintains a normally open.The effect of second unidirectional valve cell 25 is in order to prevent in gas
The gas backstreaming in cavity volume unit 27 is fixed in cylinder buffering course to enter in cylinder buffering chamber 10, influences buffering effect.
In fast row's formula overflow valve bottom spool 45, one-way sealing seal 46 is installed, it is to holding under fast row's formula overflow valve that it, which is acted on,
The check valve cavity volume 31 of 38 and first unidirectional valve cell 22 of chamber carries out one-way sealing, prevents from opening in row's formula relief valve unit 24 soon
Before, the gases at high pressure in cylinder buffering chamber 10 are acted on fast row's formula overflow valve bottom spool 45 so that fast row's formula overflow valve list
It is too early that member 24 is opened, and can not realize cushioning effect.And when row's formula relief valve unit 24 is re-closing off soon, it is fast to arrange under formula overflow valve
Gas in chamber 38 can be discharged from one-way sealing seal 46 so that its intracavity gas pressure recovery to atmospheric pressure size.
As described above, the present invention can be better realized.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any Spirit Essences without departing from the present invention
With made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in the present invention's
Within protection domain.
Claims (7)
1. a kind of adjustable Cushion of High-speed Pneumatic Cylinders device, including cylinder barrel (3), piston rod (1), it is connected to piston rod (1)
On cylinder piston (6) and piston both sides buffer plunger (2), the cylinder end that is connected with cylinder barrel (3) by screw thread
Lid (15), be provided with the buffer dividing plate (12) being threadedly coupled with end cap on the left of cylinder end piece (15)；It is characterized in that：
Buffer unit (18) and buffer unit fixing nut (20), the buffer unit fixing nut are additionally provided with cylinder end piece (15)
(20) cylinder end piece (15) right part is arranged on, for fixing buffer unit (18), prevents that it is axial on cylinder end piece (15)
It is mobile；
Buffer unit (18) top is provided with the axially mounted through hole (18a) that sealing cooperation is carried out with cylinder end piece (15),
Buffer unit inlet channel (18b) and buffering are had inside buffer unit (18) perpendicular to axially mounted through hole (18a)
Device exhaust passage (18g)；Buffer unit inlet channel (18b) the connection cylinder buffering chamber (10), the buffer unit row
Gas passage (18g) connection cylinder plunger cavity (19)；
Include inside the buffer unit (18)：First unidirectional valve cell (22), the second unidirectional valve cell (25), fast row's formula overflow
Valve cell (24), fixed cavity volume unit (27), common relief valve unit (26)；The first unidirectional valve cell (22) and the second list
It is identical to the valve core structure of valve cell (25)；
The first unidirectional valve cell (22) is close including check valve cavity volume (31), inner elements of check valve (30), inner elements of check valve end
Mounting (29), unidirectional valve cage (28), check valve resetting spring (32) and check valve tightening nut (33)；The one-way valve
Core (30) both ends are all provided with left end groove (30a) and right end groove (30b), and left end groove (30a) is used to install inner elements of check valve
End part seal piece (29), the interior radial hole (30c) for being provided with connection right end groove (30b) of right end groove (30b)；It is described unidirectional
Valve core (30) right end is provided with the axial annular groove of installation check valve resetting spring (32), and the unidirectional valve cage (28) is outside
Wall is provided with the radial ringed groove of mounting O-shaped sealing ring, and it is single that check valve tightening nut (33) left side is provided with installation
To the axial annular groove of valve resetting spring (32), outer wall is provided with mounting O-shaped sealing ring in the middle part of check valve tightening nut (33)
Radial ringed groove, the right end of check valve tightening nut (33) is machined with external screw thread, is connected through a screw thread screw-in buffer unit
(18) in；
Fast row's formula relief valve unit (24) include cavity volume (36) on fast row's formula overflow valve, middle cavity volume (47), lower cavity volume (38),
Spool (37), fast row's formula overflow valve bottom spool (45) in fast row's formula overflow valve upper valve core (35), fast row's formula overflow valve, fast row's formula are overflow
Flow valve overflow hole seal piece (48), fast row's formula relief valve sleeve (39), spool preloading spring (44), spring support seat (40), rotation
Tight nut (41), pre-loading screw (42) and locking nut (43)；Cavity volume (36) is filled by buffering on fast row's formula overflow valve
Put axial channel (13) connection cylinder buffering chamber (10) in inlet channel (18b) and cylinder end piece；Fast row's formula overflow valve
Middle cavity volume (47) and lower cavity volume (38) are connected duct (18d) and check valve one and fast row with check valve two by arranging formula overflow valve soon
Formula overflow valve connection duct (18c) is connected with the second unidirectional valve cell (25) and the first unidirectional valve cell (22) respectively；It is described
Fast row formula overflow valve upper valve core (35) left end cylindrical surface is machined with an axial blind hole (35a) and a radial hole (35b), axis
Intermesh between blind hole (35a) and radial hole (35b)；Described fast row's formula overflow valve upper valve core (35) right end is machined with one
External screw thread；Spool (37) left side is machined with a groove and an axial thread blind hole, groove in fast row's formula overflow valve
For installing fast row's formula overflow valve overflow hole seal piece (48), tapped blind hole carries out screw thread with fast row's formula overflow valve upper valve core (35)
Connect and diaphragm seal 48 is compressed in junction；In fast row's formula overflow valve mounting O-shaped is provided with the middle part of spool (37)
The radial ringed groove of sealing ring, right end are machined with an external screw thread；Described fast row's formula overflow valve bottom spool (45) both sides of the face point
An axial thread blind hole is not machined with, and middle part is machined with the radial ringed groove of two installation sealing rings；Fast row's formula is overflow
Stream valve bottom spool (45) left end is threadedly coupled with spool (37) in fast row's formula overflow valve, right end and spring support seat (40) into
Row is threadedly coupled；Spring support seat (40) left end is machined with an external screw thread, and middle part has been provided with the protrusion circle of position-limiting action
Platform；The raised round platform of position-limiting action is also equipped with the middle part of the pre-loading screw (42), right end is machined with an external screw thread；The valve
Core preloading spring (44) is installed between two raised round platforms, can be to spool preloading spring by the position-limiting action of raised round platform
(44) it is compressed pretension again to be locked pre-loading screw (42) by locking nut (43), fast row's formula overflow valve overflow port is carried out close
Envelope, described fast row's formula relief valve sleeve (39) outer wall are both provided with the radial ringed groove of mounting O-shaped sealing ring；
The fixed cavity volume unit (27) includes cylindrical chamber (49) and the tightening nut (50) for being threaded in its end；Institute
State tightening nut (50) and be machined with an axial thread through hole, the convenient pneumatic fast adapter of installation, tightening nut (50) left side
End is also machined with a groove and processes the radial ringed groove of mounting O-shaped sealing ring on the outside；
The common relief valve unit (26) includes on common overflow valve cavity volume (53) under cavity volume (52), common overflow valve, common
Overflow valve upper valve core (51), common overflow valve bottom spool (60), common overflow valve overflow hole seal piece (61), common overflow valve pocket
Cylinder (59), common relief valve spool preloading spring (58), common overflow valve spring support seat (54), common overflow valve tightening nut
(57), common overflow valve pre-loading screw (56) and common overflow valve locking nut (55)；Cavity volume on the common overflow valve
(52) duct (18f) is connected with common overflow valve by fixed cavity volume with fixed cavity volume unit (27) to be connected；It is described common excessive
Cavity volume (53) is connected by buffer unit exhaust passage (18g) with cylinder plunger cavity (19) under stream valve；The common overflow valve
Upper valve core (51) left end cylindrical surface is machined with an axial blind hole (51a) and a radial hole (51b), axial blind hole (51a)
Intermesh between radial hole (51b)；Described common overflow valve upper valve core (51) right end is machined with an external screw thread；It is described general
Logical overflow valve bottom spool (60) left side is machined with a groove and an axial thread blind hole, and groove is used to install common overflow
Valve overflow hole seal piece (61), tapped blind hole are threadedly coupled and in junction to common with common overflow valve upper valve core (51)
Overflow valve overflow hole seal piece (61) is compressed；Described common overflow valve bottom spool (60) right part outer wall is provided with mounting O-shaped
The radial ringed groove of sealing ring, right side are machined with an axial thread blind hole, for common overflow valve spring support seat
(54) it is connected；Described common overflow valve spring support seat (54) left end is machined with an external screw thread, and middle part has been provided with spacing work
Raised round platform, common overflow valve pre-loading screw (56) middle part have been also equipped with the raised round platform of position-limiting action, right end
It is machined with an external screw thread；The common relief valve spool preloading spring (58) is installed between two raised round platforms, by protrusion circle
The position-limiting action of platform can be compressed pretension, the common relief valve sleeve to common relief valve spool preloading spring (58)
(59) outer wall sets the radial ringed groove of mounting O-shaped sealing ring；
The cylinder end piece (15), which is provided with connection cylinder buffering chamber, can accommodate the cylinder plunger cavity (19) of buffer plunger, cylinder end
The cylinder porting (14) of connection cylinder plunger cavity (19) and atmospheric pressure, and cylinder end piece (15) are provided with the left of lid (15)
Outer wall is provided with connection buffer unit inlet channel (18b) and the footpath of buffer unit exhaust passage (18g) and mounting O-shaped sealing ring
To annular groove；An internal thread and an external screw thread, internal thread and buffer dividing plate (12) are machined with the left of the cylinder end piece (15)
It is attached, external screw thread is attached with cylinder barrel (3), and junction is additionally provided with O-ring seal and is sealed；The buffer compartment
The annular notches of installation one-way sealing seal (11) are machined with plate (12) inner wall, when buffer plunger (2) and one-way sealing seal (11)
Closed cylinder buffering chamber (10) then is formd on the right side of cylinder piston (6) during contact, plays cushioning effect.
2. adjustable Cushion of High-speed Pneumatic Cylinders device according to claim 1, it is characterised in that on the cylinder end piece (15)
Connection buffer unit inlet channel (18b) radial ringed groove on be provided with one and directly arrange for cylinder cushion chamber (10) gas
Go out to the fixed orifice of cylinder plunger cavity (19) (17).
3. adjustable Cushion of High-speed Pneumatic Cylinders device according to claim 1, it is characterised in that in the buffer unit (18)
Unit be integrated in one, be attached mutually by the internal connected pore channel of buffer unit (18) between unit.
4. adjustable Cushion of High-speed Pneumatic Cylinders device according to claim 1, it is characterised in that in the buffer unit (18)
Fixation cavity volume unit (27) be attached with pressure reducing valve (21), before cylinder piston (6) enters buffer stage, fixed cavity volume list
Operating pressure gas is first full of in first (27)；By adjusting fast row's formula relief valve unit (24) and common relief valve unit respectively
(26) pre-loading screw, to change the buffer capacity of buffer unit (18) so that high-speed cylinder is transported under different operating conditions
It is low speed can be realized during row steady to stop.
5. adjustable Cushion of High-speed Pneumatic Cylinders device according to claim 1, it is characterised in that on the cylinder piston (6)
Including magnet (7), piston packing (8), piston abrasion-proof ring (9) and cushion pad (5).
6. the way to play for time of adjustable Cushion of High-speed Pneumatic Cylinders device any one of claim 1 to 5, it is characterised in that bag
Include following steps：
Before cylinder piston (6) enters buffer stage, operating pressure gas is filled with by fixed cavity volume list by pressure reducing valve (21)
In first (27), when buffer plunger (2) is contacted with one-way sealing seal (11), formd on cylinder piston (6) right side one it is closed
Cylinder buffering chamber (10), due to the compression of cylinder piston (6), the gas pressure in cylinder buffering chamber (10) rises rapidly
Height, and reverse motive force is produced to cylinder piston (6), force cylinder piston (6) to slow down, at this time the gas in cylinder buffering chamber (10)
Body by axial channel in cylinder end piece (13) and buffer unit inlet channel (18b) and cavity volume (36) on fast row's formula overflow valve and
First unidirectional valve cell (22) is connected；
When cylinder piston (6) speed gradually decreases to minimum, the gas pressure in cylinder buffering chamber (10) reaches fast row at this time
The Opening pressure of formula relief valve unit (24), the fast spool setting in motion for arranging formula relief valve unit (24), while fast row's formula overflow
Cavity volume (38) is connected with the check valve cavity volume (31) of the first unidirectional valve cell (22) under valve, the high pressure gas in cylinder buffering chamber (10)
Body is increased in the effective active area soon on row's formula relief valve unit (24) spool, to accelerate fast row's formula relief valve unit (24)
Opening speed, realizes the purpose of Quick air-discharge；Due to the single effect of the first unidirectional valve cell (22) so that act on fast row's formula
Pressure on overflow valve bottom spool (45) remains at high pressure conditions so that fast row's formula relief valve unit (24) is in cylinder piston
(6) state is maintained a normally open in buffering course, and then is avoided due to being vented slow or fast row's formula relief valve unit (24) in advance
Close and influence buffering effect；
After fast row's formula relief valve unit (24) is opened, the gases at high pressure in cylinder buffering chamber (10) by arranging in formula overflow valve soon
Cavity volume (47) is connected duct (18d) with check valve two from fast row's formula overflow valve and flows into the second unidirectional valve cell (25), passes through list
Duct (18e) is connected to valve two with fixed cavity volume to flow into fixed cavity volume unit (27), at this time the height in cylinder buffering chamber (10)
Body is calmed the anger because scavenging action will decline rapidly, and the gas pressure fixed in cavity volume unit (27) will gradually rise, due to solid
Gas in constant volume chamber unit (27) is connected on duct (18f) and common overflow valve by fixed cavity volume with common overflow valve all the time
Cavity volume (52) is connected, the adjusting by the Opening pressure of common relief valve unit (26) by common overflow valve pre-loading screw (56)
Be larger than operating pressure, and when the pressure rise in fixed cavity volume unit (27), by common relief valve unit (26) and
When discharge, and due to the aeration of pressure reducing valve (21), the gas pressure in fixed cavity volume unit (27) will keep work pressure
Power, so that the gas pressure in cylinder buffering chamber (10) is identical with the pressure in cylinder driving chamber (4) after exhaust terminates, from
And make the stress at cylinder piston (6) both ends close, cylinder piston (6) can low speed smoothly reach stroke end, avoid rushing
Hit the phenomenon of end cap or piston rebound.
7. the way to play for time of adjustable Cushion of High-speed Pneumatic Cylinders device described in claim 6, it is characterised in that further include one and work as
Cylinder piston (6) reaches the work step after stroke end：
After cylinder piston (6) reaches stroke end, residual gas in cylinder buffering chamber (10) is from 17 row of fixed orifice
Go out, and arrange the then discharge orifice by being arranged on check valve tightening nut (33) of the gas under formula overflow valve in cavity volume (38) soon
(34) discharge, with the discharge of gas, fast row's formula relief valve unit (24) will be under the action of spool preloading spring (44) again
Close, prepare for the buffering next time of cylinder；
When the operating condition of high-speed cylinder changes, by adjusting fast row's formula relief valve unit (24) and common relief valve unit
(26) pre-loading screw on makes cylinder piston (6) be transported in high speed to change buffer capacity of the buffer unit (18) to high-speed cylinder
In row, stroke end is reached with low speed all the time, realizes buffering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610957056.5A CN106369010B (en) | 2016-10-27 | 2016-10-27 | A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610957056.5A CN106369010B (en) | 2016-10-27 | 2016-10-27 | A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106369010A CN106369010A (en) | 2017-02-01 |
| CN106369010B true CN106369010B (en) | 2018-04-13 |
Family
ID=57893087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610957056.5A Expired - Fee Related CN106369010B (en) | 2016-10-27 | 2016-10-27 | A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106369010B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641074B (en) * | 2017-03-01 | 2019-05-07 | 山东科技大学 | A kind of intelligent feedback variable throttling buffer system and its way to play for time |
| CN107840151A (en) * | 2017-11-29 | 2018-03-27 | 苏州索力旺新能源科技有限公司 | The conducting strip mobile device of terminal box paster production |
| CN108953119B (en) * | 2018-08-15 | 2019-10-25 | 蚌埠艾普压缩机制造有限公司 | Cylinder is used in a kind of adjusting of hydrogen gas compressor pressure |
| CN108999833B (en) * | 2018-08-31 | 2024-01-30 | 北京万高众业科技股份有限公司 | Cylinder structure and locomotive |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042280A (en) * | 2010-12-30 | 2011-05-04 | 长沙中联消防机械有限公司 | Piston cylinder |
| CN102575696A (en) * | 2009-09-11 | 2012-07-11 | Smc株式会社 | Air cylinder |
| CN203223628U (en) * | 2013-05-02 | 2013-10-02 | 伯特利阀门集团有限公司 | Self-reliance type adjustable valve slowly-closing device |
| CN104358742A (en) * | 2014-11-17 | 2015-02-18 | 刘超 | Buffer device for buffer air cylinder |
| CN104675901A (en) * | 2013-12-02 | 2015-06-03 | 上海交通大学 | Gas rapid returning multi-stage hydraulic buffer |
| CN105020203A (en) * | 2015-06-30 | 2015-11-04 | 华南理工大学 | High-speed cylinder in which pneumatic buffering devices are arranged |
| CN105134260A (en) * | 2015-08-20 | 2015-12-09 | 天地科技股份有限公司 | Capacity-increase buffering anti-powerful-impact double telescopic stand columns |
| CN205315388U (en) * | 2016-01-28 | 2016-06-15 | 华南理工大学 | High -speed cylinder's pressure ratio is than formula buffer |
| CN105952698A (en) * | 2016-06-17 | 2016-09-21 | 武汉软件工程职业学院 | Gas-liquid pressurized cylinder |
| CN206221418U (en) * | 2016-10-27 | 2017-06-06 | 华南理工大学 | A kind of adjustable Cushion of High-speed Pneumatic Cylinders device |
-
2016
- 2016-10-27 CN CN201610957056.5A patent/CN106369010B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575696A (en) * | 2009-09-11 | 2012-07-11 | Smc株式会社 | Air cylinder |
| CN102042280A (en) * | 2010-12-30 | 2011-05-04 | 长沙中联消防机械有限公司 | Piston cylinder |
| CN203223628U (en) * | 2013-05-02 | 2013-10-02 | 伯特利阀门集团有限公司 | Self-reliance type adjustable valve slowly-closing device |
| CN104675901A (en) * | 2013-12-02 | 2015-06-03 | 上海交通大学 | Gas rapid returning multi-stage hydraulic buffer |
| CN104358742A (en) * | 2014-11-17 | 2015-02-18 | 刘超 | Buffer device for buffer air cylinder |
| CN105020203A (en) * | 2015-06-30 | 2015-11-04 | 华南理工大学 | High-speed cylinder in which pneumatic buffering devices are arranged |
| CN105134260A (en) * | 2015-08-20 | 2015-12-09 | 天地科技股份有限公司 | Capacity-increase buffering anti-powerful-impact double telescopic stand columns |
| CN205315388U (en) * | 2016-01-28 | 2016-06-15 | 华南理工大学 | High -speed cylinder's pressure ratio is than formula buffer |
| CN105952698A (en) * | 2016-06-17 | 2016-09-21 | 武汉软件工程职业学院 | Gas-liquid pressurized cylinder |
| CN206221418U (en) * | 2016-10-27 | 2017-06-06 | 华南理工大学 | A kind of adjustable Cushion of High-speed Pneumatic Cylinders device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106369010A (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106369010B (en) | A kind of adjustable Cushion of High-speed Pneumatic Cylinders apparatus and method | |
| US20210396294A1 (en) | Methods and apparatus for position sensitive suspension damping | |
| CN206221418U (en) | A kind of adjustable Cushion of High-speed Pneumatic Cylinders device | |
| JP5360564B2 (en) | Air cushion mechanism of pneumatic cylinder | |
| CN205978248U (en) | Hydraulic damping bumper shock absorber | |
| CN105020203B (en) | A kind of high-speed cylinder of built-in pneumatic buffer unit | |
| CN108061069B (en) | Buffer overflow valve | |
| CN108547827A (en) | A kind of built-in gas-liquid mixed buffering retraction type high-speed cylinder | |
| US8596431B2 (en) | Pneumatic cylinder with a self-adjusting end position damping arrangement, and method for self-adjusting end position damping | |
| CN201110412Y (en) | Fluid pressure reducing valve | |
| RU2007141890A (en) | COMPACT SHOCK ABSORBER FOR AIRCRAFT CHASSIS AND CHASSIS INCLUDING SUCH SHOCK ABSORBER | |
| CN106352010A (en) | Damping force automatic regulation type oil pressure buffer | |
| CN107756868A (en) | Punch press combined type pump valve Overloading protection apparatus | |
| CN103016435B (en) | Valve for preventing hydraulic motor from reversing | |
| CN205298388U (en) | Damping air spring | |
| CN201963407U (en) | Exhaust brake butterfly valve | |
| CN207485665U (en) | It is pumped for the pressure protection of Overloading protection apparatus | |
| CN108775431A (en) | Balanced valve | |
| CN209244627U (en) | Multistage draining exhaust valve | |
| CN111425483B (en) | Oil cylinder tail end buffering device | |
| CN104976178B (en) | Adjusting air cylinder | |
| CN109595288B (en) | Damping force adjusting mechanism | |
| CN209025898U (en) | A kind of gas-liquid mixed accumulator | |
| CN209083890U (en) | A kind of ride control shock absorber | |
| CN111425484A (en) | Oil cylinder tail end buffering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20211027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |