SU1291522A1 - Prod-nozzle with cam-pneumatic drive - Google Patents

Description

The invention relates to a cam-pneumatically operated stylus nozzle for sheet feeder separators on paper processing or similar machines, for example printing machines.

A drift probe is known, by means of which it feels the slip of sheets in the feeder and, in accordance with the position of the surface of the stocks, its transportation is activated. The gauge can also be used simultaneously as a boot to hold a subsequent sheet. In accordance with the GDR patent number 38281, cl. 15th 9/08, publ. 05.03.65, such a probe can be mechanically actuated by means of an articulated four-link. The gauge can be mounted on the separator and act on the switchgear controlled via the lever. According to the GDR patent No. 68232, cl. 15th, 8/09, publ. 08/05/69 The probe-nozzle is also known, which, by means of a cam, after each separation of the top sheet, rotates and then vertically moves to the slipway, holds the subsequent sheet, blows air between it and the top sheet, and feels the level of the height of the stocks. A stylus nozzle of this type of device is placed on a movable pneumatic piston rod, the piston of which, cyclically controlled in a rotary cylinder, is raised and lowered.

The advantage of this device is that, due to the fast pneumatically driven drop, the boot has more time to blow. However, precautionary measures in the event of an accident, etc. the assembly and disassembly of moving parts during replacement and cleaning is insufficient and complicated. In addition, the forced air must pass through the cavity of the cylinder in order to blow the raised sheet. As a consequence, the control of the pressure and flow rate of the injected air reached by the probe-nozzle is impossible without simultaneously changing the force of the probe against the pile of sheets. Increasing the air flow rate on the blower always resists a reduction in the force of adherence of the probe. When the force of the probe is too low, there is a danger of insufficiently reliable holding of the sheets.

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A probe-nozzle is also known, in which the blowing process proceeds completely independently of the movement process, since the lifting and lowering movement is carried out through various links of the cam and articulated mechanisms (for example, GDR patent 9199, class 15 e, 10, published 17.02. 55, This device cannot be used on modern, fast-acting feeders.

The aim of the invention is to improve the probe-nozzle as a whole and especially with regard to its maintenance.

The main object of the invention is to create a probe-nozzle, the replacement of which for cleaning, etc. It would be very easy to carry out, the force of adherence to the building sheet to hold the sheets can be adjustable regardless of the machine speed and the forced air flow to blow the sheet, and reduce the risk of accidental breakage during sheet transport or accidents. According to the inventive plug-in invention, the pneumatic cylinder is housed in a housing that rotates around a fixed axis, and the air supply hose is connected in a known manner directly to the air distributor.

Another feature of the invention is a push-on pneumatic cylinder on the side of the stocks and the mounting of a control flag for a movable spline initiator under the pneumatic cylinder on the piston rod. The pneumatic cylinder is secured in the housing by means of a pin with a spring and a guide pin. The spring pin can be provided in the form of a shear element.

“The advantage of the proposed nozzle plate is that it can be easily dismantled and mounted for cleaning purposes or that, the pressure of the probe – nozzle and the amount of air supplied can be controlled independently of each other, and safety is increased in case of possible accidents.

FIG. 1 shows the probe-nozzle. Partial section; FIG. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. one.

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Probe-nozzle 1 is placed on the piston rod 2, bearing the piston 3 and is installed in the upper 4 and lower 5 sleeves. Both sleeves 4 and 5 are axially fixed in the pneumatic cylinder by means of a locking ring 6 and fixed from turning by a screw 8. On the upper sleeve 4 there is a groove 9 in which the displacement key 10 of the piston rod 2 moves. and by means of the guide blade 13, which slides in the groove 14 of the housing 12, is fixed from rotation. The housing 12 rotates around an axis 15 fixed to a plate separator (not shown) and has a lever 16 which, through the cam roller 17, lies is the cam disc 19, placed on the single-loop, then the shaft 18 will separate foxes ate.

At the lower end of the piston rod 2, the control flag 21 connected to the displaceable spline initiator 22 is fixed by means of a clamp 20 only if the probe nozzle 1 is in its lowest position after turning (Fig. 3). Rearranged by its height, the spline initiator 22 is rigidly connected to the separator housing or the machine housing. From the collar 24 of the piston 3 and to the flange 25 of the sleeve 5 leads push

a spring 26 which simultaneously blows air in to the probe-nozzle 1

presses sleeve 5 to the lower stop ring 6. On the probe-nozzle 1 is placed a nozzle for the hose 27, which is directly connected through the hose 28 to the air distributor. Between the air distributor and the probe nozzle (scrap 1 can be placed conventional throttles or valves to adjust the pressure or the amount of air supplied. The piston rod 2 is hollow, open at the top and provided with an opening 29, which is designed so that the nozzle 1 of the extreme upper position is closed by the upper sleeve 4. On the housing 12 there is a branch pipe for the hose 30 connected through a corresponding regulator to a vacuum distributor (not shown). The branch pipe for the hose 30 has a supply It is a canal or segment air duct 31 connected through an opening 32 to a cavity of a pneumatic cylinder 7. As soon as

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under the raised sheet was laid on the slipway. Independently of the movement of the probe nozzle 1 from the air separator, air is supplied through the hose 28, the intensity of which can be controlled by means of an air flow regulator throttle and the like. During the rotation to the plane of the stocks, the control flag 21 enters into

45 is the zone of the spline initiator 22, rearranged in height, and placed on the frame 23 of the leaf trap silt nearby on the frame of the machine. From you. honeycomb adjoining probe-nozzle 1 per hundred

The 50 pellets of the sheets 33 depend on the feed from the switching initiator 22 of the pulse to change the height of the stack, and this pulse can only be sent if

55 the stylus nozzle 1 is in the turning position. If the probe-nozzle 1 has to be replaced with another one, for example, a probe with another flow section or removed for cleaning, then in this case

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the top sheet is grabbed by the u. suction cups (not shown) and the probe nozzle 1 above the stocks sheet 33 rises above the stocks, the air supply from the air distributor (not shown) with the clock control immediately stops and the pressure spring 26 retracts the piston 3 to its extreme upper position. This process is also assisted by the fact that the air above the piston can easily be forced out through the opening 29 and the hollow piston rod 2. Due to the fact that the opening 29 just before reaching the nozzle end extreme position is closed by the upper sleeve 4, a damping effect occurs or low noise braking at limit position. In order to more quickly move upwards from the distributor side, air can be supplied through the same connection for the hose 30.

By means of the cam disc 19 during the separation of the top sheet, the entire body 12, as well as the probe-nozzle 1, move away from the stocks 33 and remain in this position so that the top sheet can be removed from the stocks without interference. After the sheet has been separated, the housing 12 is re-installed at the level of the stocks with the help of the spring 34 and at the same time on the piston 3 through the air channel 31 and the opening 32 again.

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under the raised sheet was laid on the slipway. Independently of the movement of the probe nozzle 1 from the air separator, air is supplied through the hose 28, the intensity of which can be regulated by means of chokes, air flow regulator, etc. During the rotation to the plane of the stocks, the control flag 21 enters into

5, the zone of the spline initiator 22, which is rearranged in height, is located on the housing of the sheet separator 23 or nearby on the bed of the machine. From the height of the contact of the probe nozzle 1 on the staple of sheets 33 depends on the feed from the spline initiator 22 of the switchable pulse to change the height of the stocks, and this pulse can be sent only if

5, the probe-nozzle 1 is in the rotated position. If the probe-nozzle 1 has to be replaced with another one, for example, with a probe with a different flow section or removed for cleaning, then in this case

It only takes the dowel pin 11 and the entire assembly is easily pulled out from below.

To in case of an accident or the like. the continuous transportation of the stocks did not destroy the probe-nozzle 1, the support pin 11 can be made as a shear element.

1291522 6

that in the event of an accident after the shearing element is destroyed, only the pneumatic cylinder 7 can be shifted in the housing 12.

5 Recognized as an invention according to the results of an examination carried out by the Office for the Invention of the German Democratic Republic.

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FIG. 2

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Editor L.Gratillo

Tehred A. Kravchuk

Order 199/25 Circulation 591. Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Proofreader S. Shekmar

Claims (2)

1. A probe-nozzle with a cam-pneumatic drive, comprising a bed, cam, roller lever, a housing connected with a roller lever, a pneumatic cylinder mounted in the housing, a boot mounted on its piston rod, an air distributor and a hose with a connecting element, characterized in that the pneumatic cylinder 7 fixed in the housing · by means of a spring-loaded thrust pin 11 and a guide key 13, and the connecting element of the hose 27 is connected to the air distributor. 2. Probe nozzle in π. 1, characterized in that it contains an induction sensor 22 mounted on the bed, and on the piston rod 2 under the pneumatic cylinder 7, a control flag 21 is fixed for interaction with the induction sensor 22. о © © 1 ke э э Fie. 1 A probe nozzle is also known for which