Summary of the invention
The purpose of this invention is to provide a kind of location accurately, the service-strong rotary cylinder.
For realizing above purpose, technological scheme of the present invention provides a kind of rotary cylinder, it is characterized in that, by backing plate, cover plate, seal ring, rotary piston, the fixing seal pad, cylinder body, the indexing method dish, end cover, buffer stopper, signal support, backbone block, the signal line plate, splined shaft, seal ring, magnetic patch and spline housing are formed, cylinder base is provided with backing plate and cover plate, splined shaft is vertical in the middle of the cylinder body, rotary piston passes through seal ring, fixing seal pad and seal ring are located on the splined shaft, the indexing method dish passes splined shaft and is located at the cylinder body upper end, pass splined shaft in indexing method dish upper end and be provided with signal support, the signal line plate is connected with backbone block on the indexing method dish by signaling line, the end, cover at indexing method dish upper end, be connected with the cylinder body upper end, the splined shaft top is connected with top in the end cover by buffer stopper, spline housing is located on the signal support, and magnetic patch is located on the spline housing on the rotary piston.
The present invention utilizes the direct rotation of piston, has reduced middle transmission link, and the magnetic field principle that signal output utilizes magnet adopts magnetic field trigger type position limit switch. and under the situation that does not contact object, signal can accurately be exported.
Advantage of the present invention is that the employing air is a power source, and air has the advantages such as convenient, pollution-free that adopt, and the location is accurate, use is reliable.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, 2, be a kind of rotary cylinder structural representation, described a kind of rotary cylinder is made up of backing plate 1, cover plate 2, seal ring 3, rotary piston 4, fixing seal pad 5, cylinder body 6, indexing method dish 7, end cover 8, buffer stopper 9, signal support 10, backbone block 11, signal line plate 12, splined shaft 13, seal ring 14, magnetic patch 15 and spline housing 16.
Backing plate 1 and cover plate 2 are installed in cylinder body 6 bottoms, splined shaft 13 is vertically mounted in the middle of the cylinder body 6, rotary piston 4, the employing mold pressing forms, rotary piston 4 is by seal ring 3, fixing seal pad 5 and seal ring 14 are installed on the splined shaft 13, indexing method dish 7 passes splined shaft 13 and is installed in cylinder body 6 upper ends, pass splined shaft 13 in indexing method dish 7 upper ends signal support 10 is installed, signal line plate 12 is connected with backbone block 11 on the indexing method dish 7 by signaling line, end cover 8 is installed in the upper end of indexing method dish 7, be located by connecting with cylinder body 6 upper ends, splined shaft 13 tops are connected with top in the end cover 8 by buffer stopper 9, spline housing 16 is installed on the signal support 10, and magnetic patch 15 is installed on the spline housing on the rotary piston 4.
As shown in Figure 3, be signal line plate schematic diagram, described signal line plate 12 is by 3 resistance R 1, R2 and R3, K switch, two diode D1 and D2, a capacitor C and a LED light D3 form, resistance R 1 is connected with K switch by resistance R 2, K switch is connected with positive source by diode D1, power cathode is connected with resistance R 3 by diode D2, resistance R 3 is connected with resistance R 1, R2 joint by LED light D3, and capacitor C two ends are connected with diode D2 joint with diode D1 joint and resistance R 3 with K switch respectively.
During work, splined shaft of the present invention 13 lower ends are installed on the machine of petrochemical industry, and machine is carried out angle control, the control source of the gas is connected in advancing of this product, and lower cylinder body 2-G1/8 tapped hole advances, on the air outlet hole, when control cabinet sends signal, the pilot pressure source of the gas enters turned cavities before the cylinder body 6.Promoting rotary piston 4 rotates, rotate by spline spindle 13, drive mechanism's rotation of petrochemical industry machine, in the position that machine requires, accurately send electrical signal, feed back to the central control unit of machine, central control unit sends signal, machine begins to carry out work, the work for the treatment of finishes, and central control unit sends signal again, and the pilot pressure source of the gas enters cylinder body 6 back turned cavities, promote rotary piston 4 and return rotation, rotate by spline spindle 13, the mechanism that drives machine returns the home position, and signal output component sends signal once more, the feedback central control unit, a work cycle finishes.
Signal plate adopts the 24V VDC, when the rotary piston upper spline puts induction point on the magnet approach signal line, produce magnetic flux, electric capacity begins discharge, a signal takes place, make switch connection in the circuit board, constitute a revolution, LED light is bright, the output electrical signal, when magnet left induction point on the spline housing, LED light was dark, and the output electrical signal disappears.A work cycle finishes.