CN102588385A - Throttling and buffering integrated structure of cylinder - Google Patents

Throttling and buffering integrated structure of cylinder Download PDF

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Publication number
CN102588385A
CN102588385A CN2012100317968A CN201210031796A CN102588385A CN 102588385 A CN102588385 A CN 102588385A CN 2012100317968 A CN2012100317968 A CN 2012100317968A CN 201210031796 A CN201210031796 A CN 201210031796A CN 102588385 A CN102588385 A CN 102588385A
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CN
China
Prior art keywords
cylinder
adjusting screw
buffering
piston rod
cap
Prior art date
Application number
CN2012100317968A
Other languages
Chinese (zh)
Other versions
CN102588385B (en
Inventor
王世忠
杨作起
王建峰
杜辉
谢周飞
杨楚
陈早阳
Original Assignee
宁波亚德客自动化工业有限公司
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Publication date
Application filed by 宁波亚德客自动化工业有限公司 filed Critical 宁波亚德客自动化工业有限公司
Priority to CN201210031796.8A priority Critical patent/CN102588385B/en
Publication of CN102588385A publication Critical patent/CN102588385A/en
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Publication of CN102588385B publication Critical patent/CN102588385B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • F15B15/22Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position

Abstract

The invention relates to a throttling and buffering integrated structure of a cylinder. The purpose of the invention is to provide a throttling and buffering integrated structure of the cylinder. The throttling and buffering integrated structure of the cylinder comprises a main cylinder body, a sliding piston rod and two air chambers partitioned by the piston rod sliding to one end of the main cylinder body are arranged in the main cylinder body; the outer wall of the main cylinder body is provided with an exhaust port and a first adjusting screw arranged at the side of the exhaust port to control the flow of the exhaust port, the exhaust port is communicated with one of the air chambers, and a passage which penetrates the first adjusting screw through the main cylinder body to directly connect the two air chambers is arranged between the two air chambers, the first adjusting screw is also internally provided with a second adjusting screw for adjusting the flow of the passage. The throttling and buffering integrated structure of the cylinder, provided by the invention, has the beneficial effects of not only adjustably controlling the speed buffering in the stroke and at the end of the stroke of the piston rod, but also effectively simplifying the structure of an adjusting buffering device, and saves the design space, saves the cost and is suitable for the popularization.

Description

The buffering integrated structure of cylinder throttling
Technical field
The present invention relates to a kind of air cylinder structure, relate in particular to a kind of buffering integrated structure of throttling that is used on the cylinder.
Background technique
All there is terminal damping device a lot of cylinder ends; Cylinder is impacted when preventing that piston rod from moving to end; For the motion speed of piston rod in the control cylinder, also have many cylinders to be provided with the joint of turnover moral stream device or use band throttle valve simultaneously, the existing damping device of such cylinder has throttling arrangement again; This just need be respectively throttling and buffer structure and reserve design and processing space, has not only increased manufacture cost but also can influence the design space of cylinder.
One Chinese patent application publication No. CN101907113A discloses a kind of air cushion mechanism of pneumatic; Comprise cylinder body side buffer unit that is used for being installed on the cylinder body and the piston side buffer unit that moves with piston, they all are arranged on the outside of above-mentioned cylinder body, and one of them of above-mentioned two buffer units is provided with buffer bar; And another buffer unit is provided with the bar embedded hole; Meanwhile, seal ring is set, throttle valve is set in addition adjusts the air mass flow in this bar embedded hole uncovered of this bar embedded hole; Can be through throttle valve with above-mentioned air row to the outside, the above-mentioned gas damping mechanism can make above-mentioned piston be able to buffering and stop motion.This air cushion mechanism of pneumatic not only exposes to cylinder, and complex structure influences attractive in appearancely, and adopts buffer bar to insert the mode of embedded hole, and having relatively high expectations of its coaxality also improved manufacture cost undoubtedly.In addition, in a single day this air cushion mechanism of pneumatic sets, and the cushioning effect in the piston rod operation whole process is confirmed at this point; Can't do adjusting to the speed-buffering of piston rod flexibly; As keep the piston rod fast moving, when then piston rod arrives the cylinder end, still can cause damages such as bump to it; As keep piston rod low speed to move, though avoided its bump, but reduced operational efficiency, so that this air cushion mechanism of pneumatic lacks flexibilities different with the end of travel buffer requirement in piston rod stroke is corresponding to the cylinder end.
Chinese patent publication number CN201412411Y discloses a kind of buffering type cylinder; Comprise piston rod, piston, cylinder body and end cap up and down, end cap is fixed on the cylinder body up and down, and piston rod is contained in the cylinder body through piston sleeve; Upper end cap is provided with the damper piston hole; Between piston rod and upper end cap, sealing gland is installed, is provided with on the top of piston and the corresponding damper piston in damper piston hole, damper piston is provided with seal ring.This buffering type cylinder only when piston rod moves to end, has buffer function to the end, and in the piston rod moving process, owing to gas is discharged from the exhaust passage, so the speed of piston rod does not have buffering.
Chinese patent notification number CN1107809C discloses a kind of cylinder with damping mechanism; Have cylinder barrel, the piston that in this cylinder barrel, slides and supply with and discharge two relief openings that pressurized air is used to two pressure chambers leaning on this piston to separate; Also be provided with than on the corresponding position of each relief opening in the cylinder barrel the opening that is provided with respectively more near the cylinder barrel end and be communicated in the relief opening of above-mentioned pressure chamber; The throttle mechanism that buffer piston ground is stopped to be connected in this relief opening; The respectively corresponding above-mentioned opening of above-mentioned each relief opening; The position of piston seal was arranged so that before above-mentioned piston arrives end of travel; The piston seal of movement direction front side at the relief opening of crossing exhaust side but the position of not crossing relief opening stop, and the piston seal of movement direction rear side is not crossed the opening of exhaust side relief opening and just stop in its front, has both the function of cushion seal part thus.This cylinder that has damping mechanism only possesses the effect of when piston moves to the end, playing buffering, and in the piston moving process, does not also have buffer function.
Summary of the invention
The object of the present invention is to provide a kind of not only may command piston motion speed cushioning effect but also can realize that piston moves to the buffering integrated structure of cylinder throttling of cylinder end time stream buffering, to solve in the background technique problem of control piston motion speed restriction effect simultaneously and end of travel buffering.
To achieve these goals; Technological scheme of the present invention is: the buffering integrated structure of a kind of cylinder throttling; Comprise cylinder body; Separate two air chambers that form when being provided with the piston rod of slip in the said cylinder body and sliding into cylinder body one end by this piston rod; Said cylinder body outer wall be provided with relief opening and be located at exhaust side to first adjusting screw that is used to control said relief opening flow; This relief opening is communicated with an air chamber wherein, also is provided with the path that runs through straight-through two air chambers of said first adjusting screw via cylinder body between said two air chambers, also is provided with second adjusting screw that is used to control said path flow in said first adjusting screw.The mentality of designing of this technological scheme is: the flow that the speed-buffering of piston rod in stroke regulated relief opening through first adjusting screw is controlled; The flow that piston rod is regulated the path between two air chambers at the speed-buffering of end of travel through second adjusting screw is controlled; And second adjusting screw is placed in first adjusting screw, in the use, only need the rotation adjusting screw to get final product; Not only realized in the stroke of adjustable control piston bar and the speed-buffering of end of travel; And effective simplification regulate the structure of damping device, saved the design space, practiced thrift cost.
As preferably; Said piston rod outer wall is provided with piston, and this piston external diameter and cylinder body internal diameter are adaptive, and said piston outer wall is provided with seal ring; Said cylinder body end is provided with the end cap of an end opening one end sealing; The internal diameter of this end cap and the diameter of piston rod are adaptive, and said end cap inwall is provided with seal ring, and said relief opening is positioned at end cap radially.Said two air chambers utilize piston rod to cooperate with end cap exactly and are separated.
As preferably, said end cap outer wall is provided with mounting hole, and this mounting hole is communicated with air chamber near the end cap closed end, and said first adjusting screw is located in this mounting hole, and said relief opening is positioned at the side direction of mounting hole.Rotate first adjusting screw, can realize the Flow-rate adjustment of relief opening, be i.e. the control of speed-buffering in the piston rod movement process.
As preferably; The axle center of said first adjusting screw is provided with screw, and said second adjusting screw is located in the said screw, said screw radially be provided with through hole; The inwall of said mounting hole is provided with circular groove; Said through hole is corresponding with circular groove, on the annular interior edge face of said end cap, is provided with pore, and this pore is communicated with circular groove.When piston rod moves to end of travel; To be separated into two air chambers; Can pass through to rotate second adjusting screw in pore, circular groove, through hole, the air chamber of screw entering away from the gas in the air chamber of end cap, can realize the buffering control of piston rod end of travel near end cap
As preferably, the outside that is positioned at first adjusting screw on the said mounting hole inwall is provided with draw-in groove, is provided with back-up ring in the draw-in groove.In order to prevent that adjusting screw from screwing out, so be provided with draw-in groove and back-up ring at its outboard end.
The beneficial effect of the buffering integrated structure of cylinder throttling of the present invention is: the flow that the speed-buffering of piston rod in stroke regulated relief opening through first adjusting screw is controlled; The flow that piston rod is regulated the path between two air chambers at the speed-buffering of end of travel through second adjusting screw is controlled; And second adjusting screw is placed in first adjusting screw, in the use, only need the rotation adjusting screw to get final product; Not only realized in the stroke of adjustable control piston bar and the speed-buffering of end of travel; And effective simplification regulate the structure of damping device, saved the design space, practiced thrift cost.
Description of drawings
Fig. 1 is the sectional view of the buffering integrated structure of cylinder throttling of the present invention;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the view of piston rod end when not inserting end cap.
Label is respectively among the figure: 1. cylinder body 2. piston rods 3. pistons 4. end caps 5. first air chambers 6. second air chambers 7. first adjusting screw 8. relief openings 9. second adjusting screw 10. through holes 11. circular grooves 12. pores 13. back-up rings.
Embodiment
Below through embodiment and combine accompanying drawing that technological scheme of the present invention is done further to specifically describe.
Embodiment:
The buffering integrated structure of a kind of cylinder throttling; Like Fig. 1, shown in Figure 2; Comprise cylinder body 1, be provided with the piston rod 2 of slip in the said cylinder body 1, said piston rod 2 outer walls are provided with piston 3; These piston 3 external diameters and cylinder body 1 internal diameter are adaptive, and said piston 3 outer walls are provided with the seal ring that is used for itself and cylinder body 1 inner wall sealing.Said cylinder body 1 end is provided with the end cap 4 of an end opening one end sealing, and the diameter of the internal diameter of this end cap 4 and piston rod 2 is adaptive, and said end cap 4 inwalls are provided with seal ring; When piston rod 2 moves to end, cooperate with end cap 4 to be separated into two independently air chambers, be respectively first air chamber 5 and second air chamber 6, end cap 4 outer walls are provided with mounting hole; This mounting hole site in end cap 4 radially; This mounting hole is communicated with second air chamber 6, and first adjusting screw 7 is housed in the said mounting hole, on the outer wall of end cap 4, also has relief opening 8; Said relief opening 8 is positioned at the side direction of mounting hole; The axle center of said first adjusting screw 7 has screw, is provided with second adjusting screw 9 in the said screw, said screw radially be provided with through hole 10.The inwall of said mounting hole is provided with circular groove 11, and said through hole 10 is corresponding with circular groove 11, on the annular interior edge face of said end cap 4, is provided with pore 12, and this pore 12 is communicated with circular groove 11.The both sides that on the outer wall of first adjusting screw 7, are positioned at through hole 10 are equipped with seal ring, and the outside that on the outer wall of second adjusting screw 9, is positioned at through hole 10 is provided with seal ring.The outside that is positioned at first adjusting screw 7 on the said mounting hole inwall is provided with draw-in groove, is provided with back-up ring 13 in the draw-in groove.
During use, as shown in Figure 3, the flow that the speed-buffering of piston rod 2 in stroke regulated relief opening 8 through first adjusting screw 7 is controlled; As shown in Figure 2, the flow that piston rod 2 is regulated the path between two air chambers at the speed-buffering of end of travel through second adjusting screw 9 is controlled, and second adjusting screw 9 is placed in first adjusting screw 7; In the use; Only need two adjusting screw of rotation get final product, not only realized in the stroke of adjustable control piston bar 2 and the speed-buffering of end of travel, and effective simplification the structure of adjusting damping device; Save the design space, practiced thrift cost.
Above-mentioned described specific embodiment only is that the preferable examples explanation is done in design of the present invention.All any modifications of within spirit of the present invention and principle, being made or replenish or be equal to alternatively all should be included within the protection domain of claim of the present invention.

Claims (5)

1. buffering integrated structure of cylinder throttling; Comprise cylinder body (1); Separate two air chambers that form when being provided with the piston rod (2) of slip in the said cylinder body (1) and sliding into cylinder body (1) one end by this piston rod (2); It is characterized in that: first adjusting screw (7) that is used to control said relief opening (8) flow that said cylinder body (1) outer wall is provided with relief opening (8) and is located at relief opening (8) side direction; This relief opening (8) is communicated with an air chamber wherein; Also be provided with the path that runs through straight-through two air chambers of said first adjusting screw (7) via cylinder body (1) between said two air chambers, also be provided with second adjusting screw (9) that is used to control said path flow in said first adjusting screw (7).
2. the buffering integrated structure of cylinder throttling according to claim 1; It is characterized in that: said piston rod (2) outer wall is provided with piston (3); This piston (3) external diameter and cylinder body (1) internal diameter are adaptive; Said piston (3) outer wall is provided with seal ring, and said cylinder body (1) end is provided with the end cap (4) of an end opening one end sealing, and the diameter of internal diameter of this end cap (4) and piston rod (2) is adaptive; Said end cap (4) inwall is provided with seal ring, and said relief opening (8) is positioned at end cap (4) radially.
3. the buffering integrated structure of cylinder throttling according to claim 2; It is characterized in that: said end cap (4) outer wall is provided with mounting hole; This mounting hole is communicated with air chamber near end cap (4) closed end; Said first adjusting screw (7) is located in this mounting hole, and said relief opening (8) is positioned at the side direction of mounting hole.
4. the buffering integrated structure of cylinder throttling according to claim 3; It is characterized in that: the axle center of said first adjusting screw (7) is provided with screw; Said second adjusting screw (9) is located in the said screw; Said screw radially be provided with through hole (10), the inwall of said mounting hole is provided with circular groove (11), said through hole (10) is corresponding with circular groove (11); On the annular interior edge face of said end cap (4), be provided with pore (12), this pore (12) is communicated with circular groove (11).
5. according to claim 3 or the buffering integrated structure of 4 described cylinder throttlings, it is characterized in that: the outside that is positioned at first adjusting screw (7) on the said mounting hole inwall is provided with draw-in groove, is provided with back-up ring (13) in the draw-in groove.
CN201210031796.8A 2012-02-14 2012-02-14 Throttling and buffering integrated structure of cylinder CN102588385B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210031796.8A CN102588385B (en) 2012-02-14 2012-02-14 Throttling and buffering integrated structure of cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210031796.8A CN102588385B (en) 2012-02-14 2012-02-14 Throttling and buffering integrated structure of cylinder
PCT/CN2012/087106 WO2013120380A1 (en) 2012-02-14 2012-12-21 Throttling and buffering integrated structure of air cylinder

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CN102588385A true CN102588385A (en) 2012-07-18
CN102588385B CN102588385B (en) 2015-01-07

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852903A (en) * 2012-09-11 2013-01-02 苏州同大机械有限公司 Buffer cylinder structure for plastic product molding machine
CN102852904A (en) * 2012-09-11 2013-01-02 苏州同大机械有限公司 Buffer oil cylinder for plastic product forming machinery
WO2013120380A1 (en) * 2012-02-14 2013-08-22 宁波亚德客自动化工业有限公司 Throttling and buffering integrated structure of air cylinder
CN104006030A (en) * 2013-05-22 2014-08-27 芜湖高昌液压机电技术有限公司 Oil cylinder buffering device for reducing lifter descending grounding impact force and noise
CN105351183A (en) * 2015-11-25 2016-02-24 徐州科源液压股份有限公司 Pressure compensation high-pressure water pump
CN105840581A (en) * 2016-05-19 2016-08-10 大连海事大学 Pressure feedback type air cylinder buffering device
CN106211788A (en) * 2014-04-14 2016-12-07 Smc株式会社 Fluid pressure cylinder

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CN201241895Y (en) * 2008-06-12 2009-05-20 宁波丰州机械有限公司 Cylinder for chucking appliance with flow regulation mechanism
CN201636117U (en) * 2010-03-10 2010-11-17 无锡市长江液压缸厂 Adjustable gap-buffer hydraulic cylinder
JP2011256943A (en) * 2010-06-09 2011-12-22 Ckd Corp Fluid pressure cylinder
CN202493522U (en) * 2012-02-14 2012-10-17 宁波亚德客自动化工业有限公司 Throttling and buffering integrated structure of cylinder

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Publication number Priority date Publication date Assignee Title
US20040237774A1 (en) * 2003-03-07 2004-12-02 Smc Kabushiki Kaisha Cylinder apparatus
JP2006138361A (en) * 2004-11-10 2006-06-01 Ebara Corp Shock cushioning mechanism of hydraulic cylinder and hydraulic cylinder
US20070017363A1 (en) * 2005-07-25 2007-01-25 Smc Corporation Fluid pressure cylinder apparatus having throttle valve
CN201241895Y (en) * 2008-06-12 2009-05-20 宁波丰州机械有限公司 Cylinder for chucking appliance with flow regulation mechanism
CN201636117U (en) * 2010-03-10 2010-11-17 无锡市长江液压缸厂 Adjustable gap-buffer hydraulic cylinder
JP2011256943A (en) * 2010-06-09 2011-12-22 Ckd Corp Fluid pressure cylinder
CN202493522U (en) * 2012-02-14 2012-10-17 宁波亚德客自动化工业有限公司 Throttling and buffering integrated structure of cylinder

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120380A1 (en) * 2012-02-14 2013-08-22 宁波亚德客自动化工业有限公司 Throttling and buffering integrated structure of air cylinder
CN102852903A (en) * 2012-09-11 2013-01-02 苏州同大机械有限公司 Buffer cylinder structure for plastic product molding machine
CN102852904A (en) * 2012-09-11 2013-01-02 苏州同大机械有限公司 Buffer oil cylinder for plastic product forming machinery
CN104006030A (en) * 2013-05-22 2014-08-27 芜湖高昌液压机电技术有限公司 Oil cylinder buffering device for reducing lifter descending grounding impact force and noise
CN106211788A (en) * 2014-04-14 2016-12-07 Smc株式会社 Fluid pressure cylinder
CN105351183A (en) * 2015-11-25 2016-02-24 徐州科源液压股份有限公司 Pressure compensation high-pressure water pump
CN105840581A (en) * 2016-05-19 2016-08-10 大连海事大学 Pressure feedback type air cylinder buffering device

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WO2013120380A1 (en) 2013-08-22
CN102588385B (en) 2015-01-07

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