CN2168976Y

CN2168976Y - Compress cylinder with adjustable distance of stroke

Info

Publication number: CN2168976Y
Application number: CN 93215730
Authority: CN
Inventors: 黄庆荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-15
Filing date: 1993-06-15
Publication date: 1994-06-15
Anticipated expiration: 2003-06-15

Abstract

The utility model relates to a compression cylinder with adjustable piston stroke. A piston with a piston rod which outwards extends is arranged in the body of the compression cylinder of a piston, and the two ends of the compression cylinder are respectively provided with an air inlet hole and an air outlet hole. A limiting piston is arranged in the body of the compression cylinder at the rear of the piston, and the limiting piston is connected with one end of a regulating rod which outwards extends from a back cover of the compression cylinder. A regulating nut is wrung on the extending section of the regulating rod, and a medium input end at the rear of the compressed cylinder is connected with a three-way type flow path select switch. The regulating rod is hollow. When the regulating nut is rotated, the regulating rod can be pulled out or pushed in axially along the compression cylinder to change the axial position of the limiting piston at the front end of the regulating rod in the compression cylinder for obtaining the purpose that the stroke of the piston is changed.

Description

Compress cylinder with adjustable distance of stroke

The utility model relates to a kind of hydraulic pressure installation, particularly a kind of compression cylinder of adjusting piston stroke.

General air or oil hydraulic cylinder all are to be made of a cylinder body and the movable piston that is housed in the cylinder body, are connected with an outer piston rod that extends on the piston that moves, and piston rod links to each other with mechanical component again, to finish mechanical motion.Because the stroke that piston moves in piston cylinder is fixed, that is: the movement travel of piston just fixes after the piston cylinder completion of processing, so can't regulate by the traveled distance of moving link.Therefore, be to run invalid idle stroke in many instances, not only influence working efficiency, and waste power, the working life of also having reduced equipment simultaneously.For example in automatic fixture, drive the folder bore size preferably change with the length of compression cylinder piston rod stroke, but since the air compressing cylinder of short stroke for big workpiece then because to drive the folder bore excessive and stroke not enough and can't be suitable for, and the air compressing cylinder of long stroke exists the stroke of low load with strong power and wastes problem when driving the folder small workpiece.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of existing in prior technology, and a kind of compression cylinder of the energy-saving and cost-reducing piston stroke adjusted that also can increase work efficiency is provided.

The purpose of this utility model is to realize by following technological scheme, in the Piston Compression cylinder body, put a piston that has an overhanging piston rod, two ends at compression cylinder are provided with air inlet/outlet, in the compression cylinder of the rear portion of piston, put a spacing piston, spacing piston is connected with regulating lever one end of stretching in the compression cylinder bonnet outward, be screwed the adjustment nut on overhanging section of regulating lever, be connected with a Three way type fluid passage selection switch at the rear portion of compression cylinder medium input end, regulating lever is a hollow-core construction, adjust nut by rotating, then regulating lever axially can be pulled out or pushed along compression cylinder, to change the difference of the spacing piston of regulating lever front end axial position in compression cylinder, to reach the purpose that piston changes stroke.

Therefore: remarkable result of the present utility model is:

1: the setting of spacing piston makes the stroke of piston motion be able to change or adjustment by actual demand, has not only improved working efficiency greatly, has also solved the problem of energy waste, has particularly improved the versatility of compression cylinder.

2: simple in structure, easy to adjust.

3: the normal activity that does not influence mechanism.

Concrete structure of the present utility model is realized by the following examples and accompanying drawing thereof.

Fig. 1 is a section of structure of the present utility model.

Fig. 2 is a working state figure one of the present utility model.

Fig. 3 is a working state figure two of the present utility model.

Below in conjunction with accompanying drawing 1-3 concrete structure of the present utility model is described in detail:

The utility model has a compression cylinder 1, in compression cylinder 1, be provided with the piston 4 that extends piston rod 41 outside having, axial two end cap 5 and 7 positions at compression cylinder offer

medium feeding hole

2 and 6, it is characterized in that: cover is placed with a spacing piston 10 in the compression cylinder 1 at the rear portion of piston 4, be connected with a flexible regulating lever 20 that extends back the compression cylinder rear portion on the spacing piston 10, the medium channel 200 that flexible regulating lever 20 centers have front and back to connect, the outer extension of flexible regulating lever 20 is provided with thread section 201, on thread section 201, be screwed adjusting nut 30, be connected with a three-way type at medium feeding 2 positions, hole and select to switch valve 3.Referring to Fig. 1

Structure characteristic of the present utility model also is:

The end cap 5 at compression cylinder 1 rear portion has a back vertically protruding positioning section 51, on the thread section 201 of the flexible regulating lever 20 of the end of positioning section 51, twist by nut 30 is arranged, the chamber section 11 of the compression cylinder 1 between medium channel 200 and spacing piston 10 and the piston 4 connects, the end that Three way type is selected to switch valve 3 is connected with the high-pressure medium pipeline, the other end that Three way type is selected to switch valve 3 is connected with medium feeding hole 2, medium feeds hole 6 and is connected with the media outlet end of solenoid valve 60 with medium channel 200, the high-pressure medium pipeline links to each other with decompressor 50 inlets, and the outlet of decompressor 50 is connected with solenoid valve 60 inlets.Referring to Fig. 1 and Fig. 2

Working principle of the present utility model is as follows:

The utility model is applicable to the operating mode of liquids and gases medium, then is that the operating mode of gas is illustrated below with the medium;

The pressurized gas of pneumatics pump output at first enter a threeway 40, divide two-way output then, one the tunnel is connected to and selects to an end of switch valve 3 and be incorporated into the medium inlet 2 at compression cylinder 1 rear portion, another road connects an air reducing valve 50, gas pressure reduces and becomes medium pressure gas after reduction valve 50 decompressions, medium pressure gas is connected by pipeline and solenoid valve 60 inlets and is two outputs along separate routes, and one the tunnel is connected with medium channel 200, and another road connects medium feeding hole 6.

Select when switch 3 is selected high-pressure gas pressures input compression cylinders 1 rear portion when runner, spacing piston 10 is moved by the high pressure effect from left to right, when nut 30 and rear pressing cover 5 ends against after then halt, promptly move to Fig. 2 state by state shown in Figure 3.And moving from right to left by medium of piston 4 feeds the medium pressure gas control of introducing in hole 6.In the middle of the gas of pressure when feeding by the medium channel 200 of regulating

lever

20,4 in piston moves from left to right.When piston 4 moves to left to spacing piston 10 because the back pressure at spacing piston 10 rear portions is higher than its anterior pressure, so spacing piston 10 can not move to left, therefore, also limited piston 4 after the journey of dividing a word with a hyphen at the end of a line.As rethink and shorten when dividing a word with a hyphen at the end of a line journey behind the piston 4, only needing nut 30 axially revolved and move back, 10 in spacing piston to left dislocation, shortens piston 4 strokes under the pressurized gas effect again.

In the time will increasing the stroke of piston 4, to select to switch valve 3 and pressurized gas connecting end and be closed condition, open its other end outlet simultaneously, referring to Fig. 3 state, this moment, the pressurized gas at spacing piston 10 rear portions were discharged, therefore, when piston 4 then can be unrestricted during again to left back moving and together with spacing piston 10 by pusher till the desired spacing stroke, again nut 30 is screwed closing to positioning section 51 ear end faces, and make once more to select to switch 3 commutation and by medium inlet 2 and feed pressurized gas, so that spacing piston 10 location.

Claims

1, can adjust the compression cylinder of piston stroke, one compression cylinder (1) is arranged, in compression cylinder (1), be provided with the piston (4) that extends piston rod (41) outside having, axial two end cap (5) and (7) position at compression cylinder offer medium feeding hole (2) and (6), it is characterized in that: cover is placed with a spacing piston (10) in the compression cylinder (1) at the rear portion of piston (4), be connected with a flexible regulating lever (20) that extends back the compression cylinder rear portion on the spacing piston (10), the medium channel (200) that flexible regulating lever (20) center has front and back to connect, the outer extension of flexible regulating lever (20) is provided with thread section (201), on thread section (201), be screwed adjusting nut (30), be connected with a three-way type at medium feeding position, hole (2) and select to switch valve (3).

2, according to the described compression cylinder of adjusting piston stroke of claim 1, it is characterized in that: the end cap (5) at compression cylinder (1) rear portion has a back vertically protruding positioning section (51), go up at the thread section (201) of the flexible regulating lever (20) of the end of positioning section (51) and to twist by nut (30) is arranged, the chamber section (11) of the compression cylinder (1) between medium channel (200) and spacing piston (10) and the piston (4) connects, the end that Three way type is selected to switch valve (3) is connected with the high-pressure medium pipeline, the other end that Three way type is selected to switch valve (3) is connected with medium feeding hole (2), medium feeds hole (6) and is connected with the media outlet end of medium channel (200) with solenoid valve (60), the high-pressure medium pipeline links to each other with decompressor (50) inlet, and the outlet of decompressor (50) is connected with solenoid valve (60) inlet.