CN102588385B - Throttling and buffering integrated structure of cylinder - Google Patents

Throttling and buffering integrated structure of cylinder Download PDF

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Publication number
CN102588385B
CN102588385B CN201210031796.8A CN201210031796A CN102588385B CN 102588385 B CN102588385 B CN 102588385B CN 201210031796 A CN201210031796 A CN 201210031796A CN 102588385 B CN102588385 B CN 102588385B
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CN
China
Prior art keywords
cylinder
adjusting screw
piston rod
cap
buffering
Prior art date
Application number
CN201210031796.8A
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Chinese (zh)
Other versions
CN102588385A (en
Inventor
王世忠
杨作起
王建峰
杜辉
谢周飞
杨楚
陈早阳
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宁波亚德客自动化工业有限公司
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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

Cylinder throttling buffering integral structure

Technical field

The present invention relates to a kind of air cylinder structure, particularly relate to a kind of throttling buffering integral structure on cylinder.

Background technique

A lot of cylinder head portions has end damping device, when moving to end to prevent piston rod, cylinder is impacted, simultaneously in order to the motion speed of piston rod in control cylinder, also there are many cylinders to be provided with turnover gas throttling arrangement or use the joint of band throttle valve, the existing damping device of such cylinder has throttling arrangement again, this just needs to be respectively throttling and buffer structure reserves design and processing space, has not only added manufacture cost but also can affect the design space of cylinder.

Chinese patent application publication No. CN101907113A discloses a kind of air cushion mechanism of pneumatic, comprise the piston side buffer unit for being arranged on cylinder body side buffer unit on cylinder body and movement together with piston, they are all arranged on the outside of above-mentioned cylinder body, above-mentioned two buffer units one of them on be provided with buffer bar, and on another buffer unit, be provided with bar embedded hole, meanwhile, in the uncovered portion of this bar embedded hole, seal ring is set, throttle valve is set in addition to adjust the air mass flow in this bar embedded hole, can by above-mentioned air discharged to outside by throttle valve, above-mentioned gas damping mechanism can make above-mentioned piston be cushioned and stop motion.This air cushion mechanism of pneumatic not only exposes to cylinder, complex structure, affects attractive in appearance, and adopts buffer bar to insert the mode of embedded hole, and the requirement of its coaxality is higher, also improves manufacture cost undoubtedly.In addition, this air cushion mechanism of pneumatic is once set, and the cushioning effect that piston rod runs in whole process is determined at this point, cannot regulate the speed-buffering of piston rod flexibly, as kept piston rod fast moving, then, when piston rod arrives cylinder head portions, still can cause the damages such as shock to it; As kept piston rod low speed to move, although avoid its shock to cylinder head portions, but reduce operational efficiency, thus this air cushion mechanism of pneumatic to lack flexibilities different from end of travel buffer requirement in piston rod stroke corresponding.

China Patent Publication No. CN201412411Y discloses a kind of buffering type cylinder, comprise piston rod, piston, cylinder body and upper and lower end cap, upper and lower end cap is fixed on cylinder body, piston rod is contained in cylinder body by piston sleeve, upper end cap is provided with damper piston hole, between piston rod and upper end cap, sealing gland is installed, the top of piston is provided with the damper piston corresponding with 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 end, and in piston rod moving process, because gas is discharged from exhaust passage, so the speed of piston rod is without buffering.

Chinese patent notification number CN1107809C discloses a kind of cylinder with damping mechanism, have cylinder barrel, the piston slided in this cylinder barrel, and two relief openings of pressurized air are discharged to the Liang Ge pressure chamber supply of separating by this piston, also being provided with opening that the position more corresponding than relief opening each in cylinder barrel is arranged respectively closer to cylinder barrel end is communicated in the relief opening of above-mentioned pressure chamber, the throttle mechanism that flow by limiting the exhaust of discharging from above-mentioned pressure chamber stops with making buffer piston is connected to this relief opening, above-mentioned each relief opening is a corresponding above-mentioned opening respectively, the position of piston seal is arranged so that before above-mentioned piston arrives end of travel, the piston seal of movement direction front side is crossing the relief opening of exhaust side but the position of not crossing relief opening stops, and the piston seal of movement direction rear side is not crossed the opening of exhaust side relief opening and just stops before it, have both the function of buffer sealing part thus.The effect playing buffering when piston moves to end should be only possessed with the cylinder of damping mechanism, and also without buffer function in piston moving process.

Summary of the invention

The object of the present invention is to provide a kind of not only can control piston motion speed cushioning effect but also the cylinder throttling buffering integral structure of throttling buffering when piston moves to cylinder head portions can be realized, can not the problem of control piston motion speed restriction effect and end of travel buffering simultaneously to solve in background technique.

To achieve these goals, technological scheme of the present invention is: a kind of cylinder throttling buffering integral structure, comprise cylinder body, two air chambers be separated when being provided with the piston rod of slip in described cylinder body and sliding into cylinder body one end by this piston rod, described cylinder body outer wall be provided with relief opening and be located at exhaust side to the first adjusting screw for controlling described relief opening flow, this relief opening is communicated with a wherein air chamber, also be provided with between described two air chambers and run through via cylinder body the path that described first adjusting screw leads directly to two air chambers, the second adjusting screw for controlling described Access flow is also provided with in described first adjusting screw.The mentality of designing of this technological scheme is: the speed-buffering of piston rod in stroke regulates the flow of relief opening to control by the first adjusting screw, piston rod regulates the flow of the path between two air chambers to control by the second adjusting screw at the speed-buffering of end of travel, and the second adjusting screw is placed in the first adjusting screw, in using, only need to rotate adjusting screw, not only achieve in the stroke of adjustable control piston bar and the speed-buffering of end of travel, and effectively simplify the structure regulating damping device, save design space, save cost.

As preferably, described piston rod outer wall is provided with piston, this piston external diameter and cylinder body internal diameter adaptation, described piston outer wall is provided with seal ring, described cylinder body end is provided with the end cap that one end open one end is closed, the internal diameter of this end cap and the diameter adaptation of piston rod, described end cap inwall is provided with seal ring, and described relief opening is positioned at the radial direction of end cap.Described two air chambers utilize piston rod to coordinate with end cap exactly and are separated.

As preferably, described end cap outer wall is provided with mounting hole, and this mounting hole is communicated with the air chamber near end cap closed end, and described first adjusting screw is located in this mounting hole, and described relief opening is positioned at the side direction of mounting hole.Rotate the first adjusting screw, can realize the Flow-rate adjustment of relief opening, the speed-buffering namely in piston rod movement process controls.

As preferably, the axle center of described first adjusting screw is provided with screw, described second adjusting screw is located in described screw, the radial direction of described screw is provided with through hole, the inwall of described mounting hole is provided with circular groove, described through hole is corresponding with circular groove, and the annular interior edge face of described end cap is provided with pore, and this pore is communicated with circular groove.When piston rod moves to end of travel, two air chambers will be separated into, enter away from the gas in the air chamber of end cap in the air chamber of end cap by pore, circular groove, through hole, screw, rotate the second adjusting screw, the cushioning control of piston rod stroke end can be realized

As preferably, the outside described mounting hole inwall being positioned at the first adjusting screw is provided with draw-in groove, is provided with back-up ring in draw-in groove.In order to prevent adjusting screw from screwing out, therefore be provided with draw-in groove and back-up ring at its outboard end.

The beneficial effect of cylinder throttling buffering integral structure of the present invention is: the speed-buffering of piston rod in stroke regulates the flow of relief opening to control by the first adjusting screw, piston rod regulates the flow of the path between two air chambers to control by the second adjusting screw at the speed-buffering of end of travel, and the second adjusting screw is placed in the first adjusting screw, in using, only need to rotate adjusting screw, not only achieve in the stroke of adjustable control piston bar and the speed-buffering of end of travel, and effectively simplify the structure regulating damping device, save design space, save cost.

Accompanying drawing explanation

Fig. 1 is the sectional view of cylinder throttling buffering integral structure 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.

Number in the figure is respectively: 1. cylinder body 2. piston rod 3. piston 4. end cap 5. first air chamber 6. second air chamber 7. first adjusting screw 8. relief opening 9. second adjusting screw 10. through hole 11. circular groove 12. pore 13. back-up ring.

Embodiment

Also by reference to the accompanying drawings technological scheme of the present invention is further described specifically below by embodiment.

Embodiment:

A kind of cylinder throttling buffering integral structure, as shown in Figure 1 and Figure 2, comprise cylinder body 1, the piston rod 2 of slip is provided with in described cylinder body 1, described piston rod 2 outer wall is provided with piston 3, this piston 3 external diameter and cylinder body 1 internal diameter adaptation, described piston 3 outer wall is provided with the seal ring for itself and cylinder body 1 inner wall sealing.Described cylinder body 1 end is provided with the end cap 4 that one end open one end is closed, the internal diameter of this end cap 4 and the diameter adaptation of piston rod 2, described end cap 4 inwall is provided with seal ring, coordinate with end cap 4 when piston rod 2 moves to end and be separated into two independently air chambers, be respectively the first air chamber 5 and the second air chamber 6, end cap 4 outer wall is provided with mounting hole, this mounting hole site is in the radial direction of end cap 4, this mounting hole is communicated with the second air chamber 6, described mounting hole is built with the first adjusting screw 7, the outer wall of end cap 4 also has relief opening 8, described relief opening 8 is positioned at the side direction of mounting hole, the axle center of described first adjusting screw 7 has screw, the second adjusting screw 9 is provided with in described screw, the radial direction of described screw is provided with through hole 10.The inwall of described mounting hole is provided with circular groove 11, and described through hole 10 is corresponding with circular groove 11, and the annular interior edge face of described end cap 4 is provided with pore 12, and this pore 12 is communicated with circular groove 11.The both sides that the outer wall of the first adjusting screw 7 is positioned at through hole 10 are equipped with seal ring, and the outside that the outer wall of the second adjusting screw 9 is positioned at through hole 10 is provided with seal ring.The outside described mounting hole inwall being positioned at the first adjusting screw 7 is provided with draw-in groove, is provided with back-up ring 13 in draw-in groove.

During use, as shown in Figure 3, the speed-buffering of piston rod 2 in stroke regulates the flow of relief opening 8 to control by the first adjusting screw 7; As shown in Figure 2, piston rod 2 regulates the flow of the path between two air chambers to control by the second adjusting screw 9 at the speed-buffering of end of travel, and the second adjusting screw 9 is placed in the first adjusting screw 7, in using, only need rotation two adjusting screw, not only achieve in the stroke of adjustable control piston bar 2 and the speed-buffering of end of travel, and effectively simplify the structure regulating damping device, save design space, save cost.

Above-mentioned described specific embodiment is only do preferable examples explanation to design of the present invention.All any amendments done within the spirit and principles in the present invention are supplementary or equivalent to be substituted, within the protection domain that all should be included in the claims in the present invention.

Claims (5)

1. a cylinder throttling buffering integral structure, comprise cylinder body (1), two air chambers be separated when being provided with the piston rod (2) of slip in described cylinder body (1) and sliding into cylinder body (1) one end by this piston rod (2), it is characterized in that: described cylinder body (1) outer wall is provided with relief opening (8) and is located at first adjusting screw (7) for controlling described relief opening (8) flow of relief opening (8) side direction, this relief opening (8) is communicated with a wherein air chamber, the path running through straight-through two air chambers of described first adjusting screw (7) via cylinder body (1) is also provided with between described two air chambers, the second adjusting screw (9) for controlling described Access flow is also provided with in described first adjusting screw (7).
2. cylinder throttling buffering integral structure according to claim 1, it is characterized in that: described piston rod (2) outer wall is provided with piston (3), this piston (3) external diameter and cylinder body (1) internal diameter adaptation, described piston (3) outer wall is provided with seal ring, described cylinder body (1) end is provided with the end cap (4) that one end open one end is closed, the internal diameter of this end cap (4) and the diameter adaptation of piston rod (2), described end cap (4) inwall is provided with seal ring, and described relief opening (8) is positioned at the radial direction of end cap (4).
3. cylinder throttling buffering integral structure according to claim 2, it is characterized in that: described end cap (4) outer wall is provided with mounting hole, this mounting hole is communicated with the air chamber near end cap (4) closed end, described first adjusting screw (7) is located in this mounting hole, and described relief opening (8) is positioned at the side direction of mounting hole.
4. cylinder throttling buffering integral structure according to claim 3, it is characterized in that: the axle center of described first adjusting screw (7) is provided with screw, described second adjusting screw (9) is located in described screw, the radial direction of described screw is provided with through hole (10), the inwall of described mounting hole is provided with circular groove (11), described through hole (10) is corresponding with circular groove (11), the annular interior edge face of described end cap (4) is provided with pore (12), and this pore (12) is communicated with circular groove (11).
5. the cylinder throttling buffering integral structure according to claim 3 or 4, is characterized in that: the outside described mounting hole inwall being positioned at the first adjusting screw (7) is provided with draw-in groove, is provided with back-up ring (13) in 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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CN102588385B true CN102588385B (en) 2015-01-07

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Publication number Priority date Publication date Assignee Title
CN102588385B (en) * 2012-02-14 2015-01-07 宁波亚德客自动化工业有限公司 Throttling and buffering integrated structure of cylinder
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
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
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
JP6159938B2 (en) * 2014-04-14 2017-07-12 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
CN105840581B (en) * 2016-05-19 2017-08-25 大连海事大学 Pressure-feedback-type cylinder buffer device

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Publication number Priority date Publication date Assignee Title
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
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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WO2013120380A1 (en) 2013-08-22
CN102588385A (en) 2012-07-18

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