CN202628656U

CN202628656U - Air cylinder

Info

Publication number: CN202628656U
Application number: CN 201220163392
Authority: CN
Inventors: 余建宏
Original assignee: YUYAO YONGCHUANG SOLENOID VALVES CO Ltd
Current assignee: YUYAO YONGCHUANG SOLENOID VALVES CO Ltd
Priority date: 2012-04-17
Filing date: 2012-04-17
Publication date: 2012-12-26
Anticipated expiration: 2022-04-17

Abstract

The utility model provides an air cylinder. The air cylinder comprises a cylinder barrel, a front cover, a back cover, a piston rod and a piston, wherein the piston rod and the piston are arranged in the cylinder barrel; the front cover and the back cover are fixed at two ends of the cylinder barrel; one end of the piston rod is positioned outside the cylinder barrel; the other end of the piston rod passes through a central hole of the front cover and a piston is fixed at the other end of the piston rod; an outer cover is fixed at one end of the front cover away from the piston; a first air inlet is formed in the front cover; a second air outlet is formed in the back cover; and the air cylinder also comprises a decelerator which is used for reducing motion speed of the piston. By adoption of the air cylinder with the structure, the piston is effectively buffered, and the collision on the front and back covers is reduced.

Description

Cylinder

Technical field

The utility model relates to the Pneumatic Transmission field, specifically, relates to a kind of cylinder.

Background technique

Cylinder is used for converting compressed-air actuated pressure into mechanical energy.Cylinder in use, piston is the effect to-and-fro motion through air pressure in cylinder barrel.The cylinder of existing technology, too serious at high pressure lower piston and front and rear covers collision.Traditional throttle valve or modulating valve exist processing consuming time again, and scrappage is high, the shortcoming that the life-span is short.The cylinder of existing technology has brought inconvenience for the normal use of equipment.

The model utility content

The technical problem that the utility model will solve is that the deficiency to existing cylinder exists provides a kind of improved cylinder, and it can effectively alleviate piston collision to protecgulum and bonnet in movement process, improves the working life of cylinder.

For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of cylinder, comprise cylinder barrel, protecgulum, bonnet, piston rod and piston, and said piston rod and piston all are loaded in the cylinder barrel, and the two ends of said cylinder barrel are fixed with protecgulum and bonnet; Said piston rod one end is positioned at outside the cylinder barrel, and the other end passes the center hole of protecgulum and is fixed with piston, and said protecgulum fixedly is equipped with enclosing cover away from piston one end; Have first suction port on the said protecgulum, have second suction port on the said bonnet, wherein said cylinder comprises that also at least one is used to reduce the retarder of piston movement speed.

Preferably, said retarder quantity is one, and it is positioned at the first suction port place.

Preferably, said retarder quantity is one, and it is positioned at the second suction port place.

Preferably, said retarder quantity is two, and it lays respectively at first suction port and the second suction port place.

Preferably, near piston one end buffer ring is installed in the center hole of said protecgulum.

Preferably, said piston is near bumper fixedly is housed on the end face of bonnet one end.

Preferably, have the counterbore that leads to first suction port on the said protecgulum, in the said counterbore anechoic sheet is housed.

Implement the cylinder of the utility model, have following beneficial effect: through retarder is set in cylinder, effectively improved cylinder in use, piston has improved the working life of cylinder to the collision of front and rear covers.Through buffer ring being set and bumper being set, further alleviated the collision of piston to front and rear covers on piston end surface in the protecgulum center hole.Anechoic sheet on the protecgulum can reduce noise.Simultaneously, this model utility simple in structure is convenient to mass production.

Description of drawings

To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:

Fig. 1 is the sectional view of the utility model.

Embodiment

For the purpose, technological scheme and the advantage that make the utility model is clearer, below in conjunction with embodiment and accompanying drawing, to the utility model further explain.

As can be seen from Figure 1; The cylinder of this model utility comprises cylinder barrel 11, piston rod 1, piston 16, protecgulum 7, bonnet 18; Piston rod 1 and piston 16 all are loaded in the cylinder barrel 11, and piston rod 1 end has outside thread, through nut 20 piston 16 are fixed on the piston rod 1; Between nut 20 and the piston 16 pad 19 is installed, the 2nd O shape circle 12 is housed between piston rod 1 and the piston 16.Have on the piston 16 in first groove 22 and second groove, 23, the first grooves 22 and be set with magnet 15, the magnet 15 outer wear rings 14 that are set with are to guarantee the wear-resisting property of piston 16; Be set with piston seal 13 in second groove 23, to guarantee the sealing of piston 16 in movement process.The right ends of cylinder barrel 11 is (convenient for narrating; Be as the criterion with direction shown in scheming; But this direction does not limit the structure of this model utility) protecgulum 7 and bonnet 18 are installed through being threaded respectively, protecgulum 7 has center hole 26, and the left end of protecgulum 7 is equipped with enclosing cover 5.This enclosing cover 5 is set on the piston rod 1 and is fixed on the protecgulum 7 through being threaded, and O shape circle 6 is installed between enclosing cover 5 and the protecgulum 7.Between enclosing cover 5 and the piston rod 1 bearing 3 is installed, the left end of bearing 3 is equipped with dust ring 2, and the outer end of enclosing cover 5 is screwed with locking nut 4.Have a width on the bonnet 18 and be slightly larger than the hole of piston rod 1 end nut 20 and pad 19 width, so that piston 16 moves right.For guaranteeing the sealing of cylinder barrel 11 and protecgulum 7 and bonnet 18, the 3rd O shape circle 8 is housed between cylinder barrel 11 and the protecgulum 7, the 4th O shape circle 28 is housed between cylinder barrel 11 and the bonnet 18.

Protecgulum 7 is provided with first suction port 24, and bonnet 18 is provided with second suction port 25, for reducing the collision of 16 pairs of protecgulums 7 of piston or bonnet 18, can be provided with retarder 21 at first suction port 24 or second suction port, 25 places, thereby reduces intake velocity.When first suction port 24 and second suction port 25 all are provided with retarder 21, then can reduce piston 16 simultaneously and reach the speed that moves right left.

Certainly,, a buffer ring 9 can be installed in the center hole 26 of protecgulum 7 as the improvement of the utility model, so that play buffer function during to left movement at piston 16, protection protecgulum 7.The material of this buffer ring 9 can be nitrile butadiene rubber (NBR), and the wear resistance and the resistance to heat of this kind material are better.

Simultaneously, bumper 17 can also be set in the right side of piston 16, so that when piston 16 moves right, play buffer function, protection bonnet 18.The material of this bumper 17 can be thermoplastic polyurethane elastic plastic cement (TPU), and the bearing capacity of this kind material, impact resistance and damping performance are outstanding.

In order to reduce the noise that piston 16 produces in movement process, on the end face of protecgulum 7, have the counterbore 27 that leads to first suction port near piston 16, anechoic sheet 10 is housed in the counterbore 27.Like this, when piston 16 motions, can reduce noise.

More than show and described basic principle of the utility model and the advantage of major character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims

1. a cylinder comprises cylinder barrel, protecgulum, bonnet, piston rod and piston, and said piston rod and piston all are loaded in the cylinder barrel, and the two ends of said cylinder barrel are fixed with protecgulum and bonnet; Said piston rod one end is positioned at outside the cylinder barrel, and the other end passes the center hole of protecgulum and is fixed with piston, and said protecgulum fixedly is equipped with enclosing cover away from piston one end; Have first suction port on the said protecgulum, have second suction port on the said bonnet, it is characterized in that: said cylinder comprises that also at least one is used to reduce the retarder of piston movement speed.

2. cylinder as claimed in claim 1 is characterized in that: said retarder quantity is one, and it is positioned at the first suction port place.

3. cylinder as claimed in claim 1 is characterized in that: said retarder quantity is one, and it is positioned at the second suction port place.

4. cylinder as claimed in claim 1 is characterized in that: said retarder quantity is two, and it lays respectively at first suction port and the second suction port place.

5. cylinder as claimed in claim 1 is characterized in that: near piston one end buffer ring is installed in the center hole of said protecgulum.

6. like each described cylinder in the claim 1 to 5, it is characterized in that: said piston is near bumper fixedly is housed on the end face of bonnet one end.

7. like each described cylinder in the claim 1 to 5, it is characterized in that: have the counterbore that leads to first suction port on the said protecgulum, in the said counterbore anechoic sheet is housed.