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A cylinder and its piston position detection device

A detection device and cylinder technology, applied in the direction of fluid pressure actuation device, etc., can solve the problems of complex structure, unstable detection accuracy, unreliability, etc., and achieve simple structure, best positioning reliability and stability, and excellent anti-disturbance performance good effect

Active Publication Date: 2022-07-19
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a cylinder and its piston position detection device, which solves the technical problems of complex structure, unstable and unreliable detection accuracy of the cylinder piston detection scheme in the prior art

Method used

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  • A cylinder and its piston position detection device
  • A cylinder and its piston position detection device

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Experimental program
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Effect test

Embodiment 1

[0035] see figure 1 , a cylinder, comprising: a cylinder main body 1 and a piston in-position detection device;

[0036] The cylinder body 11 of the cylinder main body 1 is provided with a first differential pressure detection port 13, the first differential pressure detection port 13 includes: a first gas port and a second gas port, and the first gas port and the second gas port The distance in the movement direction of the piston is greater than the thickness of the piston 12 of the cylinder main body 1; thus, a differential pressure triggering structure is formed, that is, once the piston 12 is between the first air port and the second air port, the first air The first air port and the second air port are respectively connected to the high-pressure chamber and the low-pressure chamber, resulting in an obvious pressure difference between the two air ports, and by sensing the pressure difference signal, the piston position can be positioned with high time efficiency; compared...

Embodiment 2

[0045] This embodiment increases the number of differential pressure detection ports and corresponding piston in-position detection devices on the basis of Embodiment 1, so that multi-point in-position detection of the piston can be realized, so that in-position control can be realized, and the piston of the cylinder can also be controlled. stroke, so as to control the length of the external force arm.

[0046] The following takes two differential pressure detection ports as an example for description.

[0047] see figure 2 , the first differential pressure detection port 13 is arranged at the bottom of the cylinder body 11, the second differential pressure detection port 14 is arranged at the top of the cylinder body 11, and each of the differential pressure detection ports is correspondingly connected to a The piston in-position detection device is described; thus, the control of the upper and lower limit positions is formed, and the reciprocating control of the piston 12 ...

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Abstract

The invention belongs to the technical field of cylinders, and discloses a cylinder, comprising: a cylinder main body and a piston in-position detection device; a pressure difference detection port is provided on the cylinder body of the cylinder main body, and the pressure difference detection port comprises: a first air port and a second air port , and the distance between the first air port and the second air port in the piston movement direction is greater than the thickness of the piston of the cylinder body; the piston in-position detection device includes: a first air port lead-out pipe, a second air port lead-out pipe, The 2 / 3-way cartridge valve and the air pressure sensor; the first air port lead-out pipe is connected between the first air port and the first air inlet of the 2 / 3-way cartridge valve; the second air port leads out The pipe is connected between the second air port and the second air inlet of the two-position three-way valve; the air outlet of the two-position three-way valve is connected with the sensing end of the air pressure sensor, and the air pressure The signal output end of the sensor is connected with the controller of the cylinder main body. The cylinder and the piston in-position detection device provided by the invention can reliably realize the in-position control and detection of the piston.

Description

technical field [0001] The invention relates to the technical field of air cylinders, in particular to a cylinder and a piston position detection device thereof. Background technique [0002] The reciprocating cylinder is widely used in various fields. The gas charging and discharging on both sides of the piston is realized through the cylinder reversing valve fixed on it, and the switching between the high pressure chamber and the low pressure chamber is realized, so as to realize the reciprocating motion control of the piston. Among them, accurate detection of piston position information is a prerequisite for the execution of the cylinder action; in the prior art, most of the in-position detection of the piston is performed by arranging an electronic circuit sensing structure or a mechanical contact in-position detection structure on the cylinder body or piston rod. For example, CN200985353Y provides a solution that senses the extrusion of the piston by arranging a stroke ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/28F15B15/14
CPCF15B15/2838F15B15/1428F15B15/149
Inventor 高鸿光代惠民魏青李琰吕文超李峰
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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