CN203453181U

CN203453181U - Sustained-release cylinder

Info

Publication number: CN203453181U
Application number: CN201320589491.9U
Authority: CN
Inventors: 邹简洁
Original assignee: Cixi Is In Industry Machine-Building Co Ltd
Current assignee: Cixi Is In Industry Machine-Building Co Ltd
Priority date: 2013-09-22
Filing date: 2013-09-22
Publication date: 2014-02-26
Anticipated expiration: 2023-09-22

Abstract

The utility model relates to buffer parts/components of textile machinery and particularly relates to a sustained-release cylinder. The sustained-release cylinder comprises a cylinder body and a piston, wherein an air exhaust hole is formed in the bottom of the cylinder body, a sealing ring is fixedly sleeved on the front end of the piston; one side of the outer edge of the sealing ring bulges outwardly to form a ring of sealing bulge; the top of the sealing bulge is in contact with the internal wall face of the cylinder body; and a ring of adaptation slot is concentrically formed in a sealing ring body. The sustained-release cylinder has the beneficial effects that the sealing ring is in contact with a cylinder body face, and the sealing bulge can be fully adaptable to the internal wall of the cylinder body due to the adaptation slot; due to supporting rings, the piston and the cylinder body can always keep concentric, so that the use of a piston sleeve is avoided while the sealing effect is further improved; hard contact between the piston and the cylinder body can be prevented effectively by a buffer cushion, so that the service life of the cylinder is prolonged; and due to ventilation slots, when the buffer cushion is in contact with the bottom of the cylinder, the air pressure of all portions of the buffer cushion can be the same, so that buffer cushion falling caused by negative pressure is prevented effectively.

Description

A kind of slowly-releasing cylinder

Technical field

The utility model relates to the buffering component on a kind of textile manufacturing machine, relates in particular to a kind of slowly-releasing cylinder.

Background technique

Slowly-releasing cylinder is mainly used in printing, automation control etc. need to have tension force to control mechanically; by the effect of air pressure; make relative movement between mechanical part reach the effect of a buffering, be beneficial to the control to interaction force, be also conducive to the protection to mechanical part.

Summary of the invention

The utility model provides the slowly-releasing cylinder of a kind of simple in structure, good sealing effect and long service life.In order to realize foregoing invention object, the utility model has adopted following technological means:

A slowly-releasing cylinder, comprises cylinder body and piston; The bottom of described cylinder body has bleeder port; The fixing sheathed seal ring of front end of described piston; The outwardly formation one circle seal convexity of outer one side of described seal ring; The top of described seal convexity contacts with inboard wall of cylinder block face; The circle that has concentric in described sealing circle body adapts to groove.

As preferably, the front end of described piston arranges two support rings that are slidably matched with inboard wall of cylinder block; Two support rings are coaxial both sides that are positioned at seal ring respectively.

As preferably, on described support ring, have breach.

As preferably, an annular cushion pad is installed at the top of described piston; The front surface of described cushion pad has the inside and outside vent slot of connected ring.

As preferably, described vent slot has four, be evenly distributed on cushion pad circumference, and all towards the ring heart.

The beneficial effects of the utility model are: seal ring contacts with cylinder body face, adapt to groove and can make seal convexity and inboard wall of cylinder block fully adapt to, thereby promoted cylinder seal effect; The setting of support ring, makes piston and cylinder body remain concentric, further when lift-off seal effect, and the use of also having omitted piston sleeve, simple in structure and saved cost of production; Cushion pad can effectively prevent that piston from contacting with the hard of cylinder body, extends cylinder working life, and the setting of vent slot, when cushion pad contacts with cylinder base, makes each position air pressure of cushion pad identical, has effectively prevented from coming off because of the cushion pad that negative pressure causes.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of slowly-releasing cylinder of the utility model;

Fig. 2 is the structural representation of seal ring 4;

Fig. 3 is the structural representation of support ring 3;

Fig. 4 is the structural representation of cushion pad 5.

Embodiment

Below in conjunction with accompanying drawing, the preferred implementation of a kind of slowly-releasing cylinder of the utility model is made to detailed description:

As shown in Figures 1 to 4, this slowly-releasing cylinder mainly comprises cylinder body 1 and piston 2 two-part.Cylinder body 1 strengthens POM by chemistry to be made, and its bottom position arranges a bleeder port 6, in order to the interior gas of slow discharge cylinder body 1, thereby makes to reach between piston 2 and cylinder body 1 buffer function.

Piston 2 main bodys are made by phenolic resin, its front end is offered successively from front to back and is supported annular groove, seal groove, three circular grooves concentric with cylinder body 1 inwall of support annular groove, seal ring 4 is installed in seal groove, seal ring 4 is made by nitrile rubber, the outwardly formation one circle seal convexity 42 of rear side of its outer, the radius of seal convexity 42 is slightly larger than the radius of cylinder body 1 inwall.The circle that has concentric in seal ring 4 bodies adapts to groove 42, and the notch that adapts to groove 42 is positioned on the trailing flank of seal ring 4.Seal ring 4 contacts with cylinder body 1 internal face, adapts to groove 42 and can make seal convexity 42 and cylinder body 1 inwall fully adapt to, thereby promoted cylinder seal effect.

Two on piston 2 are supported in annular groove, fixed installation support ring 3, and support ring 3 is also made by POM, on its ring body, have a breach 31, after support ring 3 installations are fixing, its radius is identical with cylinder body 1 inwall radius, thereby support ring 3 and cylinder body 1 inwall are slidably matched.Breach 31 facilitates the installation of support ring 3, is conducive to that support ring 3 is adaptive to be anchored on piston 2 simultaneously.The setting of support ring 3, makes piston 2 and cylinder body 1 remain concentric, further when lift-off seal effect, and the use of also having omitted piston sleeve, simple in structure and saved cost of production.

On the front end of piston 2, concentric annular cushion pad 5 of fixed installation, cushion pad 5 is made by TPU.On the front-end face of cushion pad 5, have the inside and outside vent slot 51， tetra-road vent slots 51 of four road connected rings towards the ring heart, and be evenly distributed on anchor ring.Cushion pad 5 can effectively prevent that piston 2 from contacting with the hard of cylinder body 2, extend cylinder working life, the setting of vent slot 51, when cushion pad 5 contacts with cylinder body 1 bottom, make cushion pad 5 each position air pressure identical, effectively prevented that the cushion pad 5 causing because of negative pressure is bonded on cylinder body 1 and caused it to come off.

Claims

1. a slowly-releasing cylinder, comprises cylinder body (1) and piston (2); The bottom of described cylinder body (1) has bleeder port (6); It is characterized in that the fixing sheathed seal ring (4) of front end of described piston (2); The outwardly formation one circle seal convexity (42) of outer one side of described seal ring (4); The top of described seal convexity (42) contacts with cylinder body (1) internal face; The circle that has concentric in described seal ring (4) body adapts to groove (41).

2. a kind of slowly-releasing cylinder according to claim 1, is characterized in that, the front end of described piston (2) arranges two support rings (3) that are slidably matched with cylinder body (1) inwall; Two support rings (3) are coaxial both sides that are positioned at seal ring (4) respectively.

3. a kind of slowly-releasing cylinder according to claim 2, is characterized in that, has breach (31) on described support ring (3).

4. a kind of slowly-releasing cylinder according to claim 1, is characterized in that, an annular cushion pad (5) is installed at the top of described piston (2); The front surface of described cushion pad (5) has the inside and outside vent slot (51) of connected ring.

5. a kind of slowly-releasing cylinder according to claim 4, is characterized in that, described vent slot (51) has four, be evenly distributed on cushion pad (5) circumference, and all towards the ring heart.