US2142011A

US2142011A - Sheet delivery apparatus for folding machines

Info

Publication number: US2142011A
Application number: US113900A
Authority: US
Inventors: Spiess Georg
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-12-03
Filing date: 1936-12-02
Publication date: 1938-12-27
Anticipated expiration: 1955-12-27

Description

Dec. 27, 1938.

G. SPIESS 2,142,011

SHEET DELIVERY APPARATUS FOR FOLDINGMACHINES Filed Dec. 2, 1936 7 3 o I g Patented Dec. 27, 1938 [UNITED STATES SHEET DELIVERY APPARATUS FOR FOLD- KING MACHINES Georg Spiess, Leipzig, Gery Application December 2, 1936, Serial No. 113,900

In Guy December 3, 1935 4 Claims.

This invention relates to improvements in and relating to sheet deliveryapparatus for folding machines.

In buckling folding machines for transverse g folding, various arrangements are already known tion. This apparatus necessitates the installation of a special collecting band and the connection thereof with the machine driving mechanism and the stopping of the transverse feeding means.

20 In another known apparatus, delivery feeding means are provided, between the transverse feeding means of the angular feeding table of the folding mechanism which means are moved in the same, or approximately the same, direction as the sheet ejection from the previous folding mechanism and which have a disconnectible drive adapted to the sheet delivery. With this arrangement of the transverse feeding table, the sheets are injuriouslyaffected on feeding to the 30 delivery position by the transverse feeding means of the table and on the transverse feeding to the next transverse folding mechanism by the delivery feeding means. The sheets to be delivered according to the parallel folding method must be fed over the transverse feed rollers which easily put the sheets to be delivered out of adjustment.

Apart from this, the transverse feeding, provided in the known arrangement, by two conical rollers engaging at one edge of the sheet and only at 40 the very limited front part of .this edge together with pressing of the sheets by balls, is scarcely reliable. Interference by the delivery feeding bands still takes place.

The principal object of this invention is to overcome these disadvantages and to this end according to the invention, the feeding means serving for delivering the sheets are arranged raisable and lowerable between the usual transverse feeding rollers cooperating with inclined running pressure rollers, brush wheels or the like which are adjustable and bear from above such that its feeding plane can be lowcred beneath the feeding plane of the transverse feeding means or can be elevated above the latter. For this purpose, for example, the feeding-band rollers and continuing the feeding in the former direccan be arranged on a common lever system so that they form a complete delivery table. If the bands lie between long angular feeding rollers then their feeding direction-will, owing to the space proportions, have to be approximately at right angles to the roller feeding direction. If now, the deliveryapparatus is to coincide approximately with the ejection direction of the folding rollers, then the circumferential forces of the angular feeding rollers will have no, or only small, components in the direction of the guide ruler along which the sheet position is guided during the angular feeding. These components therefore result from the pressure means which press the material to be folded on the feeding rollers more or less strongly according to their adjustment; these rollers or the like must thus be arranged inclined to the feeding roller axes. If, however, instead of the angular feeding rollers, only short stub-rollers or rolls are provided, the bands can lead straight out and the intermediately lying feed rollers can, never theless, feed in an inclined direction. If the machine is to be changed from angular feeding to delivery, then the guide ruler with the pressure means for the angular feeding rollers must first be brought out of range of the delivery path. This can, if desired, be 'eifected at the same time as the raising of the delivery table; the ruler with the pressure means secured thereon must then be secured to parts of the delivery table instead of to-the angular feeding table. For the purposes of the change, it is, moreover, necessary for the bands, if they have been stationary during the angular feeding, to be set in motion either quickly, slowly, continuously or intermittently according to the type of delivery desired. On starting delivery, the angular feeding rollers therefor can be put out of operation. However this is not necessary if the delivery table, during the working, lies in a different plane from the angular feeding table. 0n the other hand, on stopping, the table not being used at the time, it is not necessary that the tables should lie in two different planes, 1. e. be raised or lowered; for the stationary feeding members do not smear the sheets incontradistinction to the known. bands or the like rotating at right angles to the sheet feeding.

The arrangement according to the invention allows also of using a. delivery mechanism and an angular feeding table at the same time adjacent one another, that is to say, delivering the sheets simultaneously according to a parallel folding method and feeding them to a. transverse parallel folded sheets.

folding mechanism. This is of importance where sheets are out according to the parallel folding method and one half of the cut sheets are to be folded transversely and the other half are to remain folded only in a parallel manner. For this purpose, the sheet delivery arrangement may be so arranged that only a certain number of the bands can be raised the remainder remaining lowered beneath the feeding level of the feeding table and the guide ruler only extending over half of the angular feeding table.

In order that the invention may be fully understood, I will now describe one'embodiment thereof, by way of example, by reference to the accompanyins drawing, in which:-

Fig. 1 is anelevatinn.

Fig. 2 is a plan view of. feeding mechanism embodying the invenflon showing the t for angular feeding, and

Fig. 3 is a view corresponding to thatof Hg. 1, but drawntoalargerscaleofthesheetdelivery arrangement according to the inventlon,in the operating position.

Referring to the drawing, I indicates the feeding table of a folding machine in the form of an inclined roller table with a laterally arranged registering ruler 2 which guide the sheets to a parallel folding system consisting of rollers 2 and fold plates 4 and deflecting members or change-over guides 5. The parallel folded sheets pass between feedingrollers 2 on the axis of which, if desired, there may be arranged longitudinal cutting tools. The sheets then pass over a guide plate 8 and a feeding roller 9 with pressure rollers lIi onto an angular feeding table consisting of rollers I2 carried in a frame II which rollers are driven together in the same direction and feed the' parallel folded sheets along an adjustable guide ruler It to a transverse folding mechanism I4.

The rollers I2 are connected to the main drive means of the device by a constantly rotating clutch member 41 carried on a drive shaft 39. The member 41 is slidable on said shaft for a driving engagement with a clutch member 42 freely rotatable on-said shaft. Member 42 has a hub mounting a sprocket 4I carrying a chain or belt 43. The nearroller I2 carries a pinion and a sprocket 44 on the shaft thereof. The chain or belt 43 engages said sprocket 44 to drive said near roller I2. A suitable gear train 46 connects said near roller I2 with the remaining rollers l2 to drive all of the same in the same direction.

The inclined drive of the sheets against the guide ruler which is necessary for registering the sheets at the ruler is produced by inclined rollers or brush wheels I5 which press the sheets onto the feeding rollers I2. The rollers or brush wheels I5 are carried in a known manner in car riers I6 adjustably secured to the guide ruler I3 and are arranged adjustable as regards the inclined position of their axes with respect to the axes of the feedingrollers in order that their inclined drivecan be adjusted in accordance with the quality of the paper being worked. Such an arrangement is shown and described in my prior Patent No. 1,898,794, dated February 21, 1933.

Between the feeding rollers I2 of the angular feeding table are arranged feeding bands I! which run perpendicularly to the guide ruler I3 that is to say in the direction of ejection of the These bands are guided over rollers I8, I9 which are carried at the free ends of

arms

20, 2|, which are pivotally connectedinpairsbyarodfl. Thearms20are arranged on a common shaft 22 and the arms 2| on a shaft 24 which latter is provided with an adjusting lever 25 with a pin for adjusting the

arms

26, 2| and consequently the feeding bands I1. 'Each roller is is provided with a pinion wheel 2' which can be brought into engagement with a corresponding pinion wheel 21 mounted onashaft 22 andcanbegcareddown fromthe drive of the folding machine in any suitable way, either with a uniform speed as, for example, by means of a change speed gear mechanism. or

with an intermittent drive by means of a pawl and ratchet device. This is not fully shown in the drawing as it is known.

On adjusting the machine for transverse folding, which is illustrated in Figs. 1 and 2, the

lever system

22, 2|, 22 withthe rollers II, II and the bands IIissoadjustedthatthefeedingleveiof the bands I'l lies underneath the feeding level of the roller table II, I2. .The sheets ejected by the rollers 2, II onto the angular feeding table are delivered to the feeding rollers l2 and now arrive beneath the inclined rollers or brush wheels II. By the co-operation of the feeding rollers I2 and the inclined rollers or brush wheels II, the sheets are fed along a guide ruler I3 to the transverse folding mechanism l4. The bands II do not contact with the sheets and are stationary.

If the parallel folded sheets are to be delivered, then the guide ruler with the inclined rollers or brush wheels I! is taken of! and the

lever system

20, 2I, 22, with the rollers I8, I9 and the bands I'I, is brought into the position illustrated, by Fig. 3, in which the pinion wheels 26, are connected with the rollers I9, and are brought into engagement with the driving pinions 21 and the feeding level of the bands I1 is elevated above the feeding level of the feeding rollers l2. The parallel folded sheets ejected by the rollers 2, III now arrive directly on the delivery bands l1 and are fed by them to a pile plate 29 secured to the machine frame.

With an inclined arrangement of the feeding rollers I2, freely mounted .pressure balls can be used for pressing the sheets on to the feeding rollers, instead of the inclined pressure rollers or brush wheels illustrated.

I claim:-

1. Sheet delivery apparatus for transverse feeding tables of folding machines, said folding machine including means for delivering sheets in one direction to said transverse feeding table,

- rolls on said table for moving said sheets transdirection of delivery.

2. Sheet delivery apparatus for transverse feeding tables of folding machines, said folding machine including means for delivering sheets in one direction to said transverse feeding table, rolls on said table for moving said sheets transversely of said direction of delivery, means for driving said rolls, means on said table movable in said delivery direction, said last'means normally being maintained in an inoperative position below the plane of the top surface of said rolls, means for raising said last means to an operative position above the plane of the top surface of said rolls, and means for driving said. raised means to deliver sheets from said table in a direction corresponding substantially to said direction of delivery, said last named driving means being operative only when said means are raised to said operative position.

3. Sheet delivery apparatus for transverse feeding tables of folding machines, said folding machine including means for delivering sheets operative position above the plane of the top surface of said rolls, means for driving said raised means to deliver sheets from said table in a direction corresponding substantially to said direction of delivery, and means for ng said rolls from said driving means therefor.

4. Sheet delivery apparatus for transverse feeding tables of folding machines, said folding machine including means for delivering sheets in one direction to said transverse feeding table,

rolls on said table for moving said sheets transversely of said direction of delivery, means for driving said rolls, means on said table movable in said delivery direction, said last means normally being maintained in an inoperative posi-- .means when the latter are lowered to the inoperative position, and means for disengaging said rolls from said driving means therefor.

GEORG SPIESS.