DE1800520A1 - Multi-way control valve - Google Patents

Description

Did

V / illy Gassert . Hauptgasse 59 Solothurn

Switzerland

Reusable control valve

The present invention relates to a multi-way control valve for a pneumatic or hydraulic actuatable oscillator, consisting of a valve housing and a back and forth arranged in this movable control piston.

For certain purposes it may be necessary to adjust the oscillating motion of the piston of a pneumatic or hydraulically operated single or double-acting cylinder so that the oscillation period of the piston regardless of the piston speed

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is the duration of the coltoene movement in the one direction longer than the other or the same in both directions. To one such To bring about control, had until now / several more— way-control valves are used what such constructions were relatively complicated and took up a lot of space. It is therefore the purpose of the present Invention to create a multi-way control valve by means of which a control of the type mentioned above is effected can be.

The multi-way control valve according to the invention is characterized in that means for automatic, mutual inhibition of the movement of the control piston are provided.

The following are exemplary embodiments of the subject matter of the invention described with reference to the accompanying drawing. It shows :

1 shows a 5-way control valve in section,

Fig. 2 is a compressed air scheme for the actuation of an oscillator consisting of a double-acting cylinder,

Fig. 3 is a compressed air scheme for the actuation of a

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OszyllatoFS consisting of a single-acting cylinder, and

Fig.-4 shows a «pliers spring and a hose ^{nozzle" ~~?} ~ * -AAis formed _{: a} connecting piece.

The 5-way control valve 1 shown in FIG consists of a housing 2 which is closed off at both of its end faces with an end plate 3, 4 in each case, in which a pneumatically or hydraulically actuated control piston 5 is arranged. There are five connection holes 6, 7, 8, 9, 10 arranged in the housing 2, namely three 6, 9, 10 on one side and two 7, 8 on the other Side of the same. Each bore is connected to the control cylinder 12 of the valve 1 via a hanging groove 11. The control piston.5, which has a bore 13a, 13b on each side, moves in the control cylinder 12 back and forth, in which case it rests against the plates 3 and 4 in both of its end positions. For the purpose of feeding of the pressure medium for actuating the control piston 5 are each a connection piece in the end plates 3 and 4 14a, 14b screwed in. Each of the connecting pieces 14a, 14b is for connection to a hose end formed and provided with a union nut 15a, 15b, which is used to attach the hose to aem end piece

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16a, 16b to clamp, in the holes 17a, 17b of the Connection pieces 14a, 14b each have a pincer spring 18a, 18b arranged, the open end of which into the control cylinder 12 protrudes. These springs are intended to provide an automatic, mutual inhibition of the movement of the To effect control piston 5.

The mode of operation of the control valve 1 is explained with the aid of the compressed air schemes shown in FIGS. 2 and 3. In Fig. 2, a double-acting cylinder 19 serves as an oscillator. The control piston 5 of the control valve 1 is in the one end position in which it rests against the left end plate 3 (see also FIG. 1). The oscillator 19 is connected to the control valve 1 via the lines 7, 8 and the bores 7, 8. The bore 6 forms the compressed air inlet, while the bores 9 and 10 serve as a compressed air outlet. The latter two can optionally be provided with outlet throttles through which the exit speed of the compressed air can be regulated. The lines 7 ^f and 8 ^f are connected to the connecting pieces 14a and 14b via lines 21 and 22 and via throttle valves 23 and 24, respectively, which are switched on in these. In this control piston position, the flows through

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the bore 6 entering compressed air through the control cylinder 12, through the bore 7 and through the line

7 and enters ^{the cylinder 19 at 7 M} , where it moves the piston 20 to the right in the direction of the arrow until it reaches the stop 25. The piston 20 pushes the air present in the cylinder 19 through 8 ″, 8 ″,

8 and 10 off. When the piston 20 has reached the stop 25, the compressed air flows from line 7 ¹ through the throttle valve 23 and through the line 21 at 16a into the control cylinder 12 and presses on the control piston the bore 13b of the piston 5 presses, held in the left end position until a pressure builds up on the other side of the piston, which exceeds the spring force. If the pressure force is greater than the spring force, the spring 18b is compressed and runs into the bore 13b of the piston 5, whereby the inhibition of the control piston 5 is canceled and it is suddenly shifted to the right. When the piston 5 has reached its right end position, the spring 18a, which was previously in a compressed state in the bore 13a of the piston, now emerges from the bore, is relaxed, and presses on the edge of the bore.

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tion 13a and thus forms an inhibition for the piston movement to the left. The compressed air entering the bore 6 now flows through 8, 8 ', 8 "into the cylinder and pushes the piston 20 in the opposite direction. After completion of the movement of the piston 20 builds a pressure on page 16b of the valve 1 until the inhibition of the control piston 5 is lifted and the piston 5 is moved to the left end position. The oscillation period of the piston 20 can by means of the two Throttle valves 23 and 24 are regulated. These can be set so that the duration of movement in the the same in both directions or longer in one direction than in the other.

As can be seen from FIG. 3, a single-acting cylinder 26 can also form the oscillator. In In this case, the piston 27 of the oscillator 26 works against a spring 28. When the control piston 5 of the control valve 1 is in the right limit switch, the compressed air flows from the bore 6 into the control cylinder 12, then through the bore 8 and through the line 8 ♦, enters the cylinder 26 at 8 "and pushes the piston 27 to the left, whereby the spring 28 is compressed. When the piston 27 is in its left Final control is attached, builds up over the line

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8 », via the throttle valve 28 and via the line 29 on the side 16b of the control piston 5 a pressure until the inhibition of the control piston 5 is overcome and this is shifted to the left in the other end position. The piston 27 of the oscillator is relieved, whereby the spring 28 pushes the piston 27 back into its right end position. The compressed air now flows via the bore 7, via the line 30 and via the throttle valve 31 against the side 16a of the Control piston 5 until the inhibition of piston movement in the opposite direction is lifted and the control piston is moved back to its right end position. Then a new work cycle begins. The oscillation period can also be regulated here by means of the throttle valves 28 and 31 «

In both cases, the oscillation control can also be carried out without the throttle valves, by choosing the strength of the spring so that the spring force is overcome at a predetermined pressure will,

4 shows a hose nozzle 32 which can be used instead of the connecting piece 14 and the inhibition of the control piston 5 of the valve l

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causing spring 18, which is inserted into the bore 33 and is held in the same.

The control valve 1 described can also be used for Hydraulic control can be used, the actuation of the control piston 5 also takes place hydraulically. In this case, a pressure accumulator must be arranged in front of the connecting pieces 14a, 14b in order to to absorb the liquid flows.

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Claims (1)

Patent application: 1, multi-way control valve for a pneumatic or hydraulically operated oscillator, consisting of a valve housing and a reciprocating control piston, characterized in that means are provided for automatic, mutual inhibition of the movement of the control piston are· 2, control valve according to claim 1, characterized in that the control piston can be actuated pneumatically or hydraulically and at both ends a hole is provided. 3, control valve according to claim 2, characterized in that the means for automatic mutual inhibition of the control piston from two opposite consist of springs arranged at both ends of the same * 4. ° control piston according to claim 2 and 3 ₄ thereby gekennitlehnet that the springs are pincer springs, each ⁹ 809832/1183 wells in the unloaded state against the edge of the associated bore of the control piston and thus the Effect inhibition of the control piston until the one acting on the opposite side of the control piston Compressive force exceeds the spring force, whereby the "§ hitting spring is compressed and in the hole of the control piston slides and thus releases the jam of the control piston. 5. Control piston according to claim 2, characterized in that that on the two ends of the valve housing opposite the end faces of the control piston a connecting piece for supplying the pressure medium for actuating the control piston is arranged. 6. Control piston according to claim 4 and 5, characterized in that the pliers springs in the connecting piece are inserted and held. 7. Control piston according to claim 5, characterized in that each of the connecting pieces for connection is designed with a hose end and provided with a union nut to the hose on the To clamp the connection piece. ¹⁰ 8-09832 / 11 3 8. Control piston according to claim 5, characterized in that each of the connecting pieces as a hose nozzle is trained. ¹¹ 9 "0 9 8 3 2/1 1 6 3