JPH0234795B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the delivery of the contents of a book, particularly in an adhesive binding machine, in which the contents of an unbound book consisting of individual sheets or signatures are conveyed to a conveyor which receives and clamps the contents. Regarding equipment.

The contents of the book are guided horizontally on the conveyor,
It is known from East German Patent No. 108,954 that a dog, which is preferably fixed to an endless chain conveyor, is deflected into an oblique running direction by means of a deflection chain wheel in the range of speed changes. The deflection is carried out in such a way that the effective horizontal velocity component is less than the conveying speed of the obliquely fed dog.
The turning chain wheel is horizontally adjustable, so that the horizontal velocity component can be adjusted as required. The horizontal speed of the dog, and thus also of the book contents to be fed, should correspond to the conveying speed of the subsequent conveyor in the area of transfer. This device is based on the defect that the book's contents can move away from the dog due to its inertia during speed changes, thereby causing displacement of the contents. This is because the projection force from velocity and mass is greater than the frictional force from contact with the contents. A further disadvantage in this case is that when the book contents enter the conveyor which is driven at low speed, displacements between the individual unbound signatures also occur. With the contents of the book leaving the dog in the deceleration phase, the outer signatures may become displaced due to the additional lateral friction as they enter the conveyor installation, which may consist of a conveyor belt or slats.

Furthermore, East German patent application WPB42C No. 199256
No. 2, it is proposed to achieve a reduction in side friction and, as a result, avoidance of shear, by means of an air blowing device in front of the point where the book contents enter the Scotto conveyor. In this device, the disadvantage of bottom friction during braking of the book contents is still not excluded, so that displacement of the inner signatures is still possible.

The object of the invention is to eliminate the separation from the first conveyor system in the transfer phase when transferring the contents of a book consisting of unbound sheets or signatures from one conveyor installation to another conveying installation at a different speed. This should not be allowed to occur.

It is therefore important to brake the contents of the books during this speed change so that they do not leave the first conveyor system prematurely and that the outer layer of the contents as well as its inner layer receives a targeted braking action. In addition, the problem arises that the entrance to the slat conveyor must be formed in such a way that the contents of the books entering the system will not be misaligned.

In bookbinding machines, especially in folding and adhesive binding machines, the contents of books assembled from individual signatures are conveyed. A conveyor system, preferably consisting of a conveyor chain with equally spaced dogs, transports the contents of the book resting on the pedestal to a second conveyor system. This second conveyor system preferably consists of two slat conveyors with the contents sandwiched between them. It preferentially operates at a slower speed than the first conveyor installation. In order to largely avoid deviations of the individual signatures that occur in the transfer area, the cradle in the transfer area is made in the form of a suction plate, and the entrance to the slat conveyor is equipped with an opening and closing device that is controlled in synchronization with the beat. establish. The closing device can be adapted to operate only one of the slat conveyors or to open and close both slat conveyors in time. The suction plate can be adjusted to match the width of the book contents being fed so that the suction air hits only the area directly where the book contents are being fed. This makes it possible to concentrate the available suction air completely on the respective contents that are in contact with it. The book contents delivered to the transfer area by the dog of the first conveyor installation arrive at the feed rate. In the area of transfer, the dog descends on the deflection element and, depending on the respective book size, reaches the speed V _p of the second conveyor installation in the conveying direction at a specific, precisely determined point. During this reduction in conveying speed, the contents of the transported books are additionally braked by the suction air in the area of the suction plate and enter the slot conveyor inlet, which is opened in a timed manner. When a point of speed matching between the book contents and the second conveyor is reached, the slat conveyor is closed by timed control to ensure that the contents are received.

This avoids shifting of the individual signatures within the contents and also prevents signatures from leaving the dog.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a folding and adhesive stitching machine, the book contents 1, which are mainly assembled from individual signatures, are conveyed by a conveyor installation 2, preferably consisting of a chain conveyor. Chain conveyor 2
Dogs 3 are installed at regular intervals,
Push the contents 1 on the pedestal 4 toward the folding point.
Before the folding point, the contents 1 are transferred to a second conveyor installation, preferably designed as a slide conveyor 5,6. The conveying speed of the slat conveyors 5 and 6 is slower than that of the chain conveyor 2. Therefore, the contents 1 that are being transported are conveyed to the slat conveyor 5,
6 and must be conveyed for further folding at a fairly uniform and small mutual distance. The mutual distance between the arriving contents 1 is the same each time when handling a plate of one size, and the mutual distance between the dogs 3 and the contents 1 to be handled are the same.
Determined by the size of. The diverting element 7 is a chain wheel in this case, whereby the feed speed of the contents 1 is reduced and the contents 1 are delivered to the low-speed slat conveyors 5, 6, but due to mechanical or other reasons, there is a delay in the deceleration. However, there was a drawback that accurate delivery in time with the high cycle speed could not be ensured.

Therefore, in the transfer area, the slat conveyor 6 is opened by a chronologically controlled closing device 8, thus ensuring a reliable introduction of the contents 1 into the slat conveyors 5, 6 at high speed and without side friction. It is designed to allow insertion.

In this case, the slot conveyor entrance is designed to open prior to the entry of the book contents 1. When the arriving contents 1 are braked and reach the same speed as the slat conveyors 5, 6, the closing device at the entrance to the slat conveyors is closed by a timed signal;
The contents 1 are further conveyed in the slat conveyors 5, 6 without being displaced. Contents 1 is the slat conveyor 5,
After being firmly gripped by 6, the slot conveyor inlet is then opened again via the closing device 8 prior to the entry of the contents 1. A chronologically controlled closing device 8 can be provided for operating only one slat conveyor 5 or 6 or for operating both slat conveyors 5 and 6. The dog 3, which is moved at the speed V _k of the chain conveyor 2, at a certain point during its descent in the area of the deflection element 7 moves at the speed V k of the slide conveyors 5, 6.
V _p is reached. In this respect, also when the contents 1 and the slat conveyors 5, 6 reach the same speed,
By means of a time-controlled signal, a closing device 8 at the entrance to the slat conveyor is actuated to close the resilient slat conveyor 6 at the entrance to the slat conveyor, thus ensuring that the contents 1 are received. After the contents 1 have been captured by the slat conveyors 5, 6, the closing device 8 is operated again, so that the slat conveyor inlet is opened and the next contents 1 can enter.

In order to ensure a reliable transfer and to prevent displacement of the individual signatures of the contents 1, the cradle 4 in the area of the entrance to the slide conveyor is also designed as a suction plate 9. The suction plate 9 is connected via a suction tube 10 to an air suction connection (not shown). The effective width of the suction plate 9 can be adjusted to the width of the contents, and in the area of the plate the signatures of the contents 1 standing on their backs are suctioned and braked at the same time. As a result, the spine of the contents 1 is correctly placed on the suction plate 9, and displacement of the signatures is avoided. The signatures remain in one plane during the deceleration phase of the dog 3 in the region of the deflection element 7 due to the effect of the suction air, and separation from the individual signature dogs 3 is avoided.

[Brief explanation of drawings]

Figure 1 is a side view of the content transfer range between both conveyor facilities, Figure 2 is a top view of the one in Figure 1 with the slat conveyor entrance open, and Figure 3 is the same as in Figure 1. A top view of the object with the slat conveyor inlet closed. 1... Contents of the book, 2... Chain conveyor, 3
...Dog, 4... pedestal, 5... slat conveyor, 6... slat conveyor, 7... conversion element,
8...Closing device, 9...Suction plate, 10...Suction pipe, _Vk ...Chain conveyor speed, _Vp ...Slat conveyor speed.

Claims (1)

[Scope of Claims] 1. In a bookbinding machine contents delivery device, the contents of a book consisting of unbound signatures, which are sent by a first conveyor 2 at a high speed Vk, are conveyed at a low speed in order to feed them, for example, to a stitching machine. In the device for delivering contents between a pair of conveyors 5 and 6 disposed opposite to each other, the first
A suction plate 9 is provided to brake the contents of the books sent by the conveyor 2, and a locking device 8 is further provided on at least one of the second conveyors 5, 6, and the locking device 8 is used for the books. It operates at the timing when the contents are sent, and the second conveyor 5, 6
A content delivery device for a bookbinding machine, characterized in that the receiving ends of the bookbinding machines are moved relative to each other in the direction of each other so that the content of the book is sandwiched therebetween. 2. The contents delivery device according to claim 1, wherein the suction range of the suction plate 9 can be adjusted according to the size of the contents.