Sheet feeding or delivering – Feeding – With means to align sheet
Patent
1992-04-28
1993-11-16
Schacher, Richard A.
Sheet feeding or delivering
Feeding
With means to align sheet
271187, 271204, B65H 502
Patent
active
052616568
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to polygraphy equipment, and more specifically it relates to the devices for receiving printed products from a product folding apparatus of a revolvingly driven machine.
DESCRIPTION OF THE PRIOR ART
The devices for receiving printed products from a product folding apparatus of a revolvingly driven machine afford taking-over and conveying folded printed products to the handling locations or stations, to make batches or sheaves of the printed (newspaper) products.
A device of this type that is known, for instance, from U.S. Pat. No. 4,767,112, affords the by-the-piece reception of the folded products. This comprises an endless chain conveyor, and a plurality of extensions or arms, each arm having a gripper member or element. Arranged at a fixed mutual spacing from one another at the chain conveyor, these arms protrude beyond the conveying chains in a transverse direction. The printed products that are released from the folding apparatus are clamped one at a time by means of the gripper elements just beneath or downstream of the product folding apparatus, where the printed products move at a high velocity. In such a device, it is necessary to ensure exact coordination/matching of the gripper movement velocities, and, accordingly, of the speed of the conveying chain, and of the folded product ejection rate. Changes in the rotational velocity of the conveyor in relation to the given speed can bring damage to or result in skipping the printed products received from the product folding apparatus. Considering the high conveying velocity of the products released, as mentioned, from the product folding apparatus, it will be seen that this device is rather complicated in construction and design, and it is subject to malfunction.
Another known device affords by-the-piece clamping or retaining the folded printed products by means of a stripper element or an ejector, with subsequent transfer of the same to the belt or band conveyor, in order to form a "cascade" of the printed products.
One such device is known, for instance, from U.S. Pat. No. 4,861,019, comprising a stripper element, with the help of which the printed products are dropped or inserted into the printed products ejector pockets or compartments created between the said stripper elements and the clips or clamp members, for instance, in the form of a rubber plate. The spacing from one another between the stripper elements rigidly connected with the shaft mounted cam discs or cam rolls of the ejector, and the rubber plates, corners of which are affixed to chain links or members driven by the shaft mounted sprocket wheel, is adjusted, depending on the volume of the printed products, by pulling away or deflecting the whole chain, or drawing it nearer to the stripper elements.
In this case, the printed products are delivered by the ejector at a much lower speed than the product folding apparatus release velocity, thus making the operation more reliable.
However, though the above device obtains an advantage over the prior art U.S. Pat. No. 4,767,112, it suffers drawbacks or shortcomings because it contemplates "cascade" conveyance of the printed products that are delivered one after another. It is known that such conveyance substantially complicates subsequent counting and forming the printed products in batches and sheaves.
Thus, it will be noted that the prior art contains no means of the by-the-piece printed products reception that would be simple in construction and design, and convenient and reliable in operation.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide a device for receiving the printed products from a product folding apparatus of a revolvingly driven machine, in order to ensure the delivery of the products (newspapers) with deceleration or slowing down the operation, and the subsequent by-the-piece conveyance of the printed products.
The object is accomplished by that in the device comprising a sprocket wheel of the endless chain conveyor, that carries clamp mem
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patent: 3847384 (1974-11-01), Bethke
patent: 4424965 (1984-01-01), Faltin
patent: 4565363 (1986-01-01), Faltin
patent: 4861019 (1989-08-01), Michalik
patent: 4886264 (1989-12-01), Haensch
patent: 5178262 (1993-01-01), Merkli
Gutov Sergei K.
Plesser Dmitry A.
Radutsky Grigory A.
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