DE6752056U - WORKING CYLINDERS FOR PNEUMATIC OR HYDRAULIC WORKING MEDIA - Google Patents

Description

ITesto machine factory Gottlieb Stoll, Esslingen a.N.

Working cylinder for pne oma ti see or hydraulic

Working media.

The invention relates to a working cylinder for pieumatisehe or hydraulic working media, in which limit switches are used to reverse the piston movement from forward to reverse and vice versa are provided for the stroke limitation, the actuation of the supply of the working medium to the cylinder dominating Valves are used and their switching elements are arranged so that each one when the piston arrives is actuated in one of its end positions by the piston or by an actuating means moving with the piston

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- 2 and thereby reversing the piston movement.

One has already suggested, the final switches are on To add the Koloen rod, however, this is additional Takes up space, which is often disadvantageous, especially with complex special machines, and reduces it contributes to the clarity of the arrangement. It has therefore already been suggested that the reversing elements to be attached directly to the cylinder. For example, working cylinders of the type in question have become known, in which the reversing elements for the flow and return are arranged axially parallel to the column rod, so that they are operated by the piston or the piston rod. These arrangements have the disadvantage that the reversing elements are only accessible to a limited extent and that because of the presence of the reversing elements No fastening elements for holding the cylinder on the front sides of the cylinder cover, e.g. none so-called swivel flanges and the like can be provided to accomplish.

| i For the above purpose, according to the invention, at

new working cylinder provided that the limit switch on

the cylinder side wall or on the outer surface of the cylinder representing and forming the tiand outside the

Area of the fastening elements used to hold the cylinder provided and arranged in this way and e.g. radially or approximately radially from anssen to are aligned inside that the free ends of their Betätigup-gsglieder protrude from the side wall or lateral surface into the interior of the cylinder. Inconveniently are the free south of the actuators of the limit switches here in front of the path of the reciprocating movement of the piston. The arrangement can be s.B. so be made that the limit switches are aligned in the cylinder wall holding them so that the path of movement their actuators runs approximately transversely to the path of movement of the piston.

The arrangement according to the invention has the advantage that the Umsteue ^ 'ungselemente from the long side of the cylinder stay conveniently accessible. In addition, the usual Fastening options for the cylinders, e.g. swivel flanges, threaded fasteners, etc. continue to be available the end covers are provided without this Grande any special additional constructive Measures become necessary. In addition, the arrangement can advantageously also be made in such a way that the Limit switch on which it stops in the cylinder side wall Visibility of the piston movement back and forth adjustable and in the respective position are relocated detectable. More expedient

wise, the limit switches for reads are in a suitable position Bore in the Z linder sidewall around its radially the longitudinal center axis running around the cylinder longitudinal axis rotatably mounted, with their actuating links outside this longitudinal central axis are arranged. On this '.' Adjust as required at the respective end of the stroke without having to take additional constructive measures.

In Fig. 1 of the drawing is an embodiment of the prior art of the invention in a side view in an axial Section shown in a schematic representation, while FIG. 1 a shows a detail of the arrangement according to FIG. 1 in a section according to the line I-I of Figure 1 and on a larger scale.

The working cylinder 1 is provided with limit switches2,5 which for reversing the piston movement from return to flow |) and vice versa and for this purpose control the inflow and outflow of the working medium to and from the cylinder by they the valves controlling the binl & ts and the outlet,

actuate. The limit switches are on the cylinder side wall i | 4 outside of the area for holding the cylinder used fastening elements, such as the fastening flange5, arranged -ad here ladial or near ι ^ d radial oriented from the outside in, with the free ends. 6 of their actuators? into the inside of the cylinder protrude and into the path of to-and-fro movement of the piston Ö or v /.

the piston rod 9 ninein protrude. The limit switches are aligned in the cylinder wall holding them so that the movement of their actuators according to arrow 1o approximately at right angles or transversely to the movement path 11 of the piston runs.

The limit switches 2, whose electrical Zaführleitung are shown at 13a, 13b, are adjustable back and forth on the cylinder wall near them in the direction of the piston movement and can be locked in the respective position, for which purpose an eccentric arrangement is provided, the axis of rotation νπή the eccentric axis transversely to the piston movement. In this way you can change the times of the respective reversal, the length of the stroke, etc. at will. The limit switches are rotatably mounted in the arrangement according to the drawing in a suitable bore 14 in the cylinder side wall around its longitudinal central axis 16 running radially to the cylinder longitudinal axis 15, with their actuators 6 being arranged outside this longitudinal central axis. It is evident that when the limit switches are twisted in their bore around the central axis 16, the actuating members 6 each assume a different position in the direction of the longitudinal axis of the cylinder.

The limit switches are used to reverse the piston movement can be designed as pneumatic or hydraulic switches, but they can also be designed as electrical switches

1 ί

and here it is expediently designed as a so-called microswitch be.

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Claims (1)

Expectations 1. Working cylinder for pneumatic or hydraulic Working media in which to reverse the piston movement ττλ «TT ^ -λΊ λ» ί-ρ *>. -. J>η.'ΐ _Λ ) · -Ί ». _τ ΐ .. «. 3. _A * - _A - i_ * n »3 ι Tj -e». * I ji ζ *. VUiJ. VUiiaUi <3.ϋ_ί. JTl. üv> S-XG-UL UXiU. UfITg ₁ SS-Si-LLO üiiivxoviiäi. USi "XUi" UiC Stroke limitation are provided for the actuation of the Control of the inlet of the working medium to the cylinder Valves are used and their contact members are arranged so that when the KolDens arrives one in each case , its end positions is actuated by the piston or by an actuating means moving with the piston and thereby reversing the piston movement, thereby marked that the limit switch on the cylinder side wall or on the wall outside the area which represents and forms the surface of the cylinder the fastening elements used to hold the cylinder provided and here so arranged and e.g. aligned radially or approximately radially from the outside to the inside are that the free ends of their Betätigongsglieder from the side wall or outer surface into the interior of the cylinder forward into it. P. * working cylinder according to claim 1- thereby g * e ka η η pa ϊ c hn e t: that the free ends of the actuating members of the end switches 675205 in which Ba of the nin and forth movement of the piston ligand gene hn ninein pre requested. 3. Working cylinder according to claim 1 or 2, characterized geke.j.nzeicnnet that the limit switches are aligned in the cylinder wall holding them, f .. _x Q the movement so ahn of their actuation members runs approximately transversely to the movement of the piston, 4. Working cylinder according to one of claims 1 to 3, characterized in that the limit switches are mounted on the cylinder side wall holding them, adjustable to and fro in the direction of the piston movement, and can be locked in the respective position. 5. Aroeits cylinder according to claim 4, characterized in that that the limit switches on the cylinder side wall holding them adjustable back and forth with the help of an eccentric arrangement are, whose axis of rotation and whose üxzenterachse transverse to Piston movement vei j. iuf t. 6. Working cylinder according to claim 4 or 5 ₅ dadurcn getceunzeicnnet that the indscnalter is rotatably mounted in a suitable bore in the cylinder side wall about its longitudinal central axis extending radially to the cylinder longitudinal axis and its actuating members outside this "'""" ^ ™ ι ι βι ^^ β—; ι ι _: '- "- ■■ -'-' ■ - 'i - ^ *'<--> i * ^^ * ^^^ J -> - i * ni * taat ^ u # i ^ ^ - 9 are arranged longitudinal center axis. 7. Working cylinder according to one of claims 1 to 6, uauuTOu ^ σ-αα% χαοσχΟΐίπΟ uj- wot t * »uxu avcX * <v <uo uouu ^ uug% jlS! i? x-lOxi / SIjl " movement serving limit switches are designed as pneumatic or hydraulic switches" 8. Working cylinder according to one of claims 1 to 6, characterized characterized in that the limit switches used to reverse the piston movement are used as electrical switches, are expediently designed as so-called microswitches. 752 05