CN201162741Y

CN201162741Y - Two-stage gas cylinder

Info

Publication number: CN201162741Y
Application number: CNU200820083197XU
Authority: CN
Inventors: 王文深
Original assignee: Zhejiang Industry and Trade Vocational College
Current assignee: Zhejiang Industry and Trade Vocational College
Priority date: 2008-02-04
Filing date: 2008-02-04
Publication date: 2008-12-10
Anticipated expiration: 2018-02-04

Abstract

The utility model discloses an energy-saving double-stage cylinder which comprises a lock nut, an air inlet plunger, a rear cylinder cover, a cylinder body, a piston, a sealing ring, a front cylinder cover, a guide sleeve, a piston rod with a plunger-type cylinder, an air outlet and an air inlet. The rear cylinder cover, the air inlet, the front cylinder and the air outlet are arranged at the two ends of the cylinder body; the piston is arranged in the cylinder body; the sealing ring is arranged between the piston and the inner wall of the cylinder body; the piston rod with the plunger-type cylinder is arranged on the piston; the outer wall of the piston rod provided with a plunger-type cylinder is connected with the front cylinder cover by the guide sleeve; the air inlet plunger which is matched with the piston rod with the plunger-type cylinder is arranged on the rear cylinder cover. Because the sectional area of the cavity of the plunger is very small, the energy-saving double-stage cylinder provided by the utility model has low air consumption during moving fast, thereby not greatly affecting on the pressure of air sources; during the slow-speed working period, compressed air is led into the rodless cavity of the cylinder and the inner cavity of the plunger-type cylinder at the same time, so that the piston rod can generate larger thrust; when the inner diameter of the cylinder is larger and blank strike is longer, the energy-saving double-stage cylinder has excellent energy-saving effect.

Description

A kind of twin-stage cylinder

Technical field

The utility model relates to cylinder, relates in particular to a kind of twin-stage cylinder.

Background technique

Present global all trades and professions have all started the tide of energy saving, as the maximum cylinder of consumption of compressed air in pneumatic system, have been widely used in the various pneumatic systems.Generalization, standardization, seriation, the lightweight of cylinder are paid attention in the design of in the past cylinder more, and the durability aspect that improves it, and energy-conservation consideration is seldom for it.Yet in the pneumatic gearing system of reality, most of cylinders all have idle stroke and working stroke, and idle stroke has consumed a large amount of pressurized air, and the pressurized air after the cylinder acting drained into atmosphere, cause the loss of the energy again.At present cylinder energy-conservation aspect, two class schemes are arranged: a class is to improve aspect structure, sealing and the material at cylinder, to realize purpose of energy saving, as reducing the cylinder inner cavity dead volume, reduce the surface friction drag of each sliding position of cylinder, alleviate the weight of moving parts etc.; Another kind of is the pressurized air with certain pressure that utilizes cylinder itself to discharge, and parts such as cylinder, selector valve are combined into one, and makes discharge pressurized air carry out twice work doing, promotes the cylinder piston motion to realize a certain manufacturing process.

Summary of the invention

The purpose of this utility model provides a kind of energy-conservation twin-stage cylinder.

It comprises lock nut, air inlet plunger, back cylinder cover, cylinder body, piston, seal ring, front end housing, guide sleeve, the piston rod of band plunger cylinder, air outlet, suction port, the cylinder body two ends are provided with back cylinder cover, suction port, front end housing, air outlet, be provided with piston in the cylinder body, be provided with seal ring between piston and the inboard wall of cylinder block, on piston, be provided with the piston rod of band plunger cylinder, the piston rod outer wall of band plunger cylinder is connected with front end housing through guide sleeve, and back cylinder cover is provided with the air inlet plunger that matches with piston rod with plunger cylinder.

The beneficial effect that the present invention compared with prior art has:

Be divided into two stages, i.e. fast moving and working stage at a slow speed when 1) the energy-conservation cylinder of twin-stage pushes away on the right side.In two stages, allow driving force and speed inequality;

2) because the plunger cavity sectional area is very little,, can not produce excessive influence to the pressure of source of the gas so air consumption is very little when fast moving.At working stage at a slow speed, pressurized air is passed into cylinder rodless cavity and plunger case inner chamber simultaneously, makes piston rod produce bigger thrust;

When 3) big and idle stroke was long at cylinder bore diameter, the energy-conservation cylinder of twin-stage had good energy-saving effect.

Description of drawings

Fig. 1 is the twin-stage structural representation of air cylinder;

Fig. 2 is a twin-stage cylinder control loop schematic representation;

Among the figure: piston rod 9, air outlet 10, the suction port 11 of lock nut 1, air inlet plunger 2, back cylinder cover 3, cylinder body 4, piston 5, seal ring 6, front end housing 7, guide sleeve 8, band plunger cylinder, cylinder body 4 two ends be provided with back cylinder cover 3, suction port 11, front end housing 7, air outlet 10, suction port 11, air pump 12, three position four-way electromagnetic valve 13, gas control one-way valve 14, twin-stage cylinder 15.

Embodiment

As shown in Figure 1, the twin-stage cylinder comprises lock nut 1, air inlet plunger 2, back cylinder cover 3, cylinder body 4, piston 5, seal ring 6, front end housing 7, guide sleeve 8, the piston rod 9 of band plunger cylinder, air outlet 10, suction port 11, cylinder body 4 two ends are provided with back cylinder cover 3, suction port 11, front end housing 7, air outlet 10, be provided with piston 5 in the cylinder body 4, be provided with seal ring 6 between piston 5 and cylinder body 4 inwalls, on piston 5, be provided with the piston rod 9 of band plunger cylinder, piston rod 9 outer walls of band plunger cylinder are connected with front end housing 7 through guide sleeve 8, and back cylinder cover 3 is provided with the air inlet plunger 2 that matches with piston rod 9 with plunger cylinder.

As shown in Figure 2, after the 1YA energising, pressurized air enters plunger cavity through the air inlet plunger hole in the twin-stage cylinder control loop, promotes twin-stage cylinder 15 pistons and moves to right fast, and this moment, twin-stage cylinder 15 left chamber desired gas sucked from external environment through gas control one-way valve 14.When piston rod moves to the working position since load strengthen, pressure raises, open three position four-way electromagnetic valve 13, pressurized air enters twin-stage cylinder 15 left chambeies, closes gas control one-way valve 14 simultaneously, and the right chamber of twin-stage cylinder air discharges through the relief opening of three position four-way electromagnetic valve 13, this moment, piston continued to move under the pressurized air effect, but because of the effect useful area strengthens, speed is slack-off and thrust strengthens, thereby satisfies twin-stage cylinder working condition requirement.After finishing, work done makes 1YA outage, 2YA energising, source of the gas pressurized air enters the right chamber of twin-stage cylinder through three position four-way electromagnetic valve 13, gas control one-way valve 14 is opened, chamber, twin-stage cylinder left side air discharges through gas control one-way valve 14, air is discharged through the relief opening of three position four-way electromagnetic valve 13 in the plunger case, and cylinder returns.

Find out that thus the twin-stage cylinder makes cylinder make rapid movement with more a spot of pressurized air when idle stroke; And when working stroke, rely on to improve pressure and increase useful area to increase air cylinder driven power.The essence of twin-stage cylinder is under the constant prerequisite of cylinder load and movement velocity thereof, reduces compressed-air actuated consumption as far as possible, that is to say the consumption that reduces idle work, improves compressed-air actuated utilization ratio, thereby has saved the energy.This cylinder is specially adapted to need bigger driving force in certain time period, and the less pneumatic system of air compressor air displacement and rated pressure, as instep formation machine pneumatic system.Therefore, this twin-stage cylinder has solved the excessive problem of large scale cylinder air consumption when rapid movement and idle stroke are longer well.

Claims

1. twin-stage cylinder, it is characterized in that comprising lock nut (1), air inlet plunger (2), back cylinder cover (3), cylinder body (4, piston (5, seal ring (6, front end housing (7, guide sleeve (8, the piston rod (9) of band plunger cylinder, air outlet (10), suction port (11), cylinder body (4) two ends are provided with back cylinder cover (3), suction port (11), front end housing (7), air outlet (10), be provided with piston (5) in the cylinder body (4), be provided with seal ring (6) between piston (5) and cylinder body (4) inwall, on piston (5), be provided with the piston rod (9) of band plunger cylinder, piston rod (9) outer wall of band plunger cylinder is connected with front end housing (7) through guide sleeve (8), and back cylinder cover (3) is provided with the air inlet plunger (2) that matches with piston rod (9) with plunger cylinder.