JPS5930608B2 - Variable transport speed device for the contents of collated books - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a device for varying the speed of the contents of a conveyed collated book, fed horizontally within a collating conveyor track, and in particular fixed to an endless conveyor chain. It also relates to something with a push arm.

In the use of bookbinding machines, it is known to connect a number of such machines in the form of a flow section. Thus, for example, it is customary to connect a binding machine with a vertical binding tape supply to a paper collection machine or a glue binding machine. In this case, however, it is necessary to coordinate the conveyor speeds of these machines in sequence.

This means that in paper collecting machines or glue binding machines, the contents of the collated books are spaced differently depending on the stock, whereas in a binding machine with a vertical tape feed, this is not the case. This is due to the fact that the spacing must be small and constant. This is necessary to reduce the peeling of the binding tape that inevitably occurs at intervals between the contents of collated books. In order to achieve such speed changes, it is known to use different speeds with short interruptions in the conveyance of the collated book contents between the two conveyors.

Between these two conveyor devices, a transfer location is provided depending on the length of the contents of the collated books, in which the collations are transported without power. In this case, a shocking speed change occurs that can only be used for the contents of a collated book with round-glue binding joined at the spine. For loosely folded papers that are simply gathered together, such a speed change is unsuitable, since the folded papers can then shift relative to each other. In other known devices, speed changes are achieved with one or two adjustable non-uniform drives.

Such a solution, however, is extremely expensive, expensive and space consuming, and its adjustment to different collated book formats is unstable and time consuming. Moreover, since the speed correspondence between conveyor means moved at non-uniform and uniform speeds is only given for a very short time,
The accuracy of the delivery of collated book contents or carrier-driven stacks does not meet the requirements imposed. The object and problem of the invention is to develop a simple and functionally reliable speed change device for a bookbinding machine, which is also suitable for transporting the contents of loosely collected and collated books. be. According to the invention, this problem is solved by the following.

That is, it is fed horizontally within the collating conveyor track. In particular, a pusher arm fixed to an endless conveyor chain is deflected in a speed change zone by a deflecting element, for example a chain wheel, into a diagonal running direction, so that the effective horizontal minute velocity is greater than the conveyor speed that conveys the pusher arm diagonally. Make it smaller. The change in speed occurs in this case during a circular transition of the pushing arm from horizontal to oblique direction. The push arm then slides downwards or upwards along the vertical push edges of the collated book contents. A collating conveyor device, in particular a pair of conveyor strips or plate conveyor chains, which takes off the contents of the collated books at a lower speed, is connected to the pushing arm, which is carried in the collating conveyor track, in the oblique direction. The effective horizontal minute velocity of the push arm conveyed to the collating conveyor device can be matched to the speed of the collating conveyor device.

The contents of the collated books, which have been fed at wide, format-dependent intervals, are thereby collected into equal, narrow, format-independent intervals and transferred to the next collating conveyor at this interval. handed over to the device. In order to change the effective horizontal minute speed, the turning element can be adjusted horizontally or vertically.

In this way, the speed change can be regulated arbitrarily and is adjusted to the size of the contents of every collated book, ie to the length of the contents of the current collated book. Furthermore, it is also possible to couple the drive of the pushing arm which is carried in the collating conveyor track with one drive of the connected collating conveyor device. Thus, during sheet adjustment, the conveyor speed of the pushing arm changes in an equal ratio to the speed of the following collating conveyor device. The invention not only can be implemented with conveyor chains and chain wheels, but also allows the pushing arm to be fixed directly or indirectly thereto and by means of a stationary or rotating curved surface in its straight conveying direction. It can also be implemented with a belt which is deflected from the direction of travel movement parallel to the direction of travel, such that the pushing arm is moved obliquely to the conveying direction.

The present invention will be described in detail below with reference to one embodiment.

With reference to FIG. 1, we will first describe the principle of the device for changing the speed.

An endless conveyor chain 1, formed as a roller chain and on which carriers 2 are fixed at uniform intervals, is fed in circles into the area of a conveyor plane 5 via deflection elements 3, 4, in this example a chain wheel. . A collated book content 6, represented by dashed lines, stands on the conveyor plane 5 and, protected from falling by means not shown, is brought into the carrier 2 in the plane of its vertical push edge 7. It is moved forward. In this case, the collated book contents have a conveyor speed V1 until the pushing arm 2 passes D over the deflection element 3. During the movement of the carrier 2 on the circular track soil of the deflection element 3, the conveyor speed V1 is divided into a horizontal, constantly decreasing minute speed Vh} and a vertical, constantly increasing minute speed Vv, with the conveyor speed V1 remaining constant. be. As soon as the horizontal minute velocity Vh reaches the desired reduced velocity, the conveyor chain 1 moves downwards in an oblique trajectory.

The speed V and the minute speeds Vh and Vv remain constant from this point on.

The carrier 2 therefore slides downwards along the push edge 7 of the collated book contents 6 and finally under the conveyor plane 5,
It therefore exits the collating conveyor area. In order to enable the carrier 2 to move with low friction along the pressed edges of the collated book contents 6, the carrier 2 is advantageously designed as a rotatable roller. Below the collating conveyor area, the carrier 2 is again guided by the deflection element 4 in the horizontal conveying direction, in which case the vertical minute velocity Vv again drops to zero and the horizontal minute velocity Vh reaches the value of the conveyor speed V1. A device for speed variation constructed in this way can also be used advantageously when collated book contents 6 are slowed down in a processing station and then accelerated again to the conveyor speed V1. By moving the deflection element 4 within the adjustment cut 8, the magnitude of the horizontal minute velocity Vh can be adjusted within a certain range. However, it is likewise possible for the deflection element 3 to be fixed in an adjustable manner. As a further solution, which is not shown in the drawings, the adjustment of one or both deflection elements can be configured perpendicular to the conveyor direction. FIG. 2 corresponds to FIG. 1, but here the turning element 4 is replaced by a turning element 9.

By means of the deflection element 9, the conveyor chain 1 is returned. Upon entering the curvature region of the turning element 9, the horizontal minute velocity Vh drops to a value of zero and subsequently increases backwards again to V1. The contents of the collated books are therefore no longer transported beyond the turning point. Such a device is used when the collated book contents 6 are transferred to a second, lower speed driven collating conveyor device 11, 12, for example a pair of conveyor strips or plate conveyor chains. can be used to advantage (
Figure 3). From FIG. 3, it can be seen that when the collated book contents 6, conveyed for example by the carrier 2, are fed into the conveyor band 11 of a folding machine working according to the longitudinal folding principle, the conveyor speed is It is clear what kind of relationship will be established.

Carriers 2 are arranged at regular intervals T on the conveyor chain 1. This is also greater than the length of the longest collated book content 14 to be transported. It can be seen that the distance A existing between the carrier 2 and the carrier 2 depends on the length L (T-L+A according to the drawing) of the contents of the collated books being transported at that time. In the subsequent vertical folding machine, of which only the conveyor belt 11} and the conveyor belt roller 12 are shown (see FIG. 5 for a top view), the distance K is It is required that the length be always constant regardless of the length of the contents of the collated book. To meet this requirement, the conveyor belt 11 must transport the collated book contents 6 a distance L+X in the time it takes for the carrier 2 to travel a distance T.
Collating and conveying device 11 with conveyor speed V1 of conveyor chain 1
, 12 and the conveyor speed V2 of the collating and conveying devices 11, 12 must be the ratio of the distance T to the distance L+X. Since T is equal to or greater than L+X, V1 is equal to or greater than V2. The velocity V2Vh<V1 is consistent with the current situation. The interval X between the contents 6 is approximately constant. When the plate size of the content 6 changes and therefore also its length, the interval X
remains constant. In this case, each time a new series of books with different editions is created, the speed V2 is newly adjusted so that the interval X becomes constant again. By moving the deflection element 9 (FIGS. 2 and 3) in the elongated hole 8, the velocity Vh can then be aligned again to the newly selected velocity V2. It is clear from FIGS. 4 and 5 how the speed equalization adjustment is carried out in relation to the length of the collected book contents in the collation and transfer area. There is a conveyor chain 1 with carriers 2 spaced apart from each other by T.
It is shown. The collated book contents 6 with the shortest length to be processed are moved by the carrier arm 2 in contact with the surface of the push edge 7 at a horizontal minute velocity V corresponding to the conveyor speed V2 of the conveyor band 11.
It is forced between the conveyor bands 11 at a speed of h. The deflection and return of the conveyor chain 1 is effected by a deflection element 10. The transfer speed V2 is obtained by a corresponding adjustment in the adjustment slot 8 of the deflection element 4. Adjustment of the deflection element 3 takes place by means of a displacement in a paper size adjustment slot 15 in relation to the length of the assembled book contents. In this case, it should be taken into account that when the leading edge of the collated book contents runs between the conveyor strips 11, the carrier 2 moves between the deflecting elements 3, 4 on an oblique track. When processing collated book contents 13 of intermediate length (indicated in broken lines in FIG. 4), it is necessary to adjust the deflection element 3 to position 3'.

This automatically results in an increase in the horizontal minute velocity Vh, which can be matched exactly to the transfer speed V2 by moving the deflection element 4 into position 4'. For collated book contents 14 of maximum length, the deflecting elements 3, 4 are not in position and are adjusted to l.

Of course, when changing paper formats, the conveyor band 11 is also controlled via a steplessly adjustable drive 16 to increase the conveyor speed V so that the contents of the collated books are always conveyed at equal short intervals.
Must be adjusted to 2. In this case, it is possible to drive the deflection element 10 at the same time by means of the drive 16 so that the ratio of the speeds at which the carrier 2 reaches the conveyor band 11 is always maintained even during speed changes. Embodiment 1 An apparatus according to the claims, characterized by the following.

That is, to the carrier 2, which is fed in the collection conveyor track, is connected a collection conveyor device 11, 12, in particular a pair of conveyor strips or conveyor chains, which picks up the collected book contents 6 at a small speed; The effective horizontal minute velocity Vh of the two sent in the direction of the vertical force is the velocity V of the collating conveyor devices 11 and 12.
Matches 2. Embodiment 2 Device according to any of the claims or embodiment 1, characterized in that the deflection elements 3, 4 for varying the effective horizontal minute velocity Vh can be adjusted horizontally or vertically. thing.

Embodiment 3 The device according to Embodiment 1, characterized in that the drive of the carrier 2 sent in the collation conveyor track is connected to the drive of the connected collation conveyor devices 11 and 12.

[Brief explanation of the drawing]

In the accompanying drawings, FIG. 1 shows the principle of the device for speed variation with a conveyor chain fed in one direction in the changing zone, and FIG. 2 shows a diagram of FIG. 1 with a conveyor chain fed in reverse direction. FIG. 3 is a side view for speed variation with phase-connected collating conveyor devices; FIG.
FIG. 3 shows a side view showing the adjustability of the device according to FIG. 5, and FIG. 5 shows a top view of FIG. Explanations of symbols in the drawings are as follows. DESCRIPTION OF SYMBOLS 1... Conveyor chain, 2... Carrier, 3... Turning element, 3ζ... Turning element, Z... Turning element, 4...
Turning element, 4ζ... Turning element, i... Turning element, 5...
... Conveyor plane, 6... Contents of collated books, 7.
... Push edge, 8 ... Adjustment long hole, 9 ... Turning element, 1
0... Turning element, 11... Conveyor band, 12...
Conveyor belt roller.

Claims (1)

[Claims] 1. For changing the speed of book contents, a conveyor equipped with a carrier that protrudes horizontally along the transport path of the book contents, and a conveyor that takes up the book contents pushed by the carrier of the conveyor. In the apparatus according to the present invention, the running direction of the carrier in the speed change range at the end of the conveyor is switched linearly in a direction tilted forward with respect to the transport direction of the book contents. Variable speed device.