EP1473125A2 - Apparatus for moving book blocks in an apparatus for trimming book blocks - Google Patents

Abstract

The triple cutter makes a front edge cut in a first position of the book block and a side edge cut in a second position. The device has a first gripper which brings the block into the first position and a second gripper which brings the block into the second position. A delivery table which moves the book block to a neutral position is mounted to swivel away so that access is easier to the front cutter.

Description

The invention relates to a device for moving book blocks in one Device for trimming book blocks, according to the preamble of claim 1.

Typically, devices of the type mentioned are used in order to three-sided trimming of a book block, this from a first cutting position in which a Leading edge trimming is performed to bring it into a second position Side edge trimming is performed, but the order can also be exact be reversed. The cutting position of the leading edge trim is usually variable, since the knife for the leading edge trimming is usually installed and only by the cutting position of the leading edge trim therefore influence the format of the trimmed book blocks in this extent can be taken. The The cutting position of the side edge trimming is usually fixed because the side knives in the Usually horizontal and symmetrical to the center line of the transport path of a book block are movable, and the side knives along the transport path so far expand that a large number of different sized book blocks are cropped can be.

A generic device is e.g. from the European patent application EP1132183 A2 known. Here, blade receiving plates are the side knives assigned and stored in such a way that these blade receiving plates in interaction with the side knives can be moved. Between these moving ones Blade receiving plates, a gripper is slidably mounted, the one to be cut Brings the book block into the first and second cutting position.

However, it would be desirable to achieve a high clock rate of a three-cutter, and at the same time to always ensure a secure grip of the book block. Besides, it would be desirable if the front knife, which is arranged transversely to the transport path, would be more easily accessible and thus a knife change would be easier.

It is therefore the object of the invention to provide a further device for moving To create book blocks in a device for trimming book blocks. This Object is achieved with the aid of the device according to the invention for moving Book blocks in a device for trimming book blocks with the in claim 1 and solved in claim 2 features.

Accordingly, the device according to the invention is a device for moving book blocks in a triple cutter, the triple cutter one Performs leading edge trimming in a first position of the book block and one Performs side edge trimming in a second position of the book block, the Device has a first gripper (121) which moves the book block into the first position brings and a second gripper (122) that brings the book block in the second position.

This allows the speed at which the book blocks move from the device to the Cropping book blocks can be edited up to doubled when that's the Processing speed of the other components of the trimming device of book blocks.

In an advantageous embodiment of the device according to the invention the device has a control which controls the drive of the first gripper in such a way, that the first gripper moves the book block from a fixed zero position to a variable first Brings position, the distance between the zero position and the first position of the Distance from the spine to the front edge of the trimmed book block corresponds. the It is clear to a person skilled in the art that the cutting sequence, that is, first leading edge trimming and then Side edge trimming can also be reversed just as well.

In a further advantageous embodiment of the device according to the invention the device has a control which controls a drive of the first gripper in such a way, that the first gripper moves the book block from the first position to a predetermined one Transfer position brings. The transfer position is advantageously before Side knives, so that possibly existing clamping devices are not in spatial conflict with the side knives can come.

In a further advantageous embodiment of the device according to the invention the device has a control system which drives the second gripper in such a way controls that the second gripper of the book block from a predetermined transfer position in the second position.

In a further advantageous embodiment of the device according to the invention the device has at least one signal transmitter which controls the device Position of at least one of the grippers transmitted. This is advantageous around the first gripper that moves to the variable cutting position. The second gripper can also be equipped with such a signal generator. The signal generator is are known in large numbers to the person skilled in the art from the prior art Signal generator, such as an optical or magnetic sensor, on an absolute scale reads the position.

In a further advantageous embodiment of the device according to the invention at least one of the grippers adjusting means, which the book block in the gripper at Lift transport from one position to another position. This will Signs of wear and tear on the book block, such as stripes, are avoided arise when the book block is dragged over the cutting pad. Especially at These traces of sanding are noticeably noticeable in black lacquered book covers. Both grippers advantageously have these actuating means for lifting the book block during transportation.

In a further advantageous embodiment of the device according to the invention the device has a first hold-down device which holds the book block in front of the Presses the leading edge trim down over a large area, especially to remove air from the book block to press. This can ensure that the pages of the book block are all dense and lie straight on top of each other and, thanks to the trimming, also straight, high-quality side surfaces of the book block arise.

In a further advantageous embodiment of the device according to the invention the first hold-down on the book block side has an elastic surface. Acting for example, a foam, cardboard, or other compliant material. The provision of such an elastic surface protects, among other things Book block surface from traces that would otherwise be caused by pressing the book block down would arise.

In a further advantageous embodiment of the device according to the invention the device on stop means which give the book block the zero position. Under Zero position is to be understood as the position of the spine from which the width of the trimmed book block is measured, especially the required Travel of the first gripper to reach the first cutting position. The Lifting means are advantageously moved into the transport path of the book block, and after aligning again moved out of the transport path to the To release the transport path again for the transport of the book block.

In a further advantageous embodiment of the device according to the invention the device on straight pushing means that the book block in the zero position to the Slings just come across. This ensures that the spine actually occupies the desired position and accordingly the Leading edge trimming can be carried out precisely. In addition, the Spine aligned at right angles to the direction of transport, which is important to follow the Perform all the trims to get a right-angled book. As a straight shot can be used, for example, transport elements that the book block up to Brought the attack.

In a further advantageous embodiment of the device according to the invention the device has a second hold-down device which is in the vicinity of a transfer position is arranged. This second hold-down serves to hold the book block in the Fix transfer position so that the book block also when transferring the first to the second gripper (122) always remains true to position and angle, and accordingly one clean book trimming can be done. The second hold-down presses the Book block advantageously down across its entire width transverse to the direction of transport. Accordingly, the device advantageously has a controller that a Drives the second hold-down in such a way that the second hold-down Book block holds down when the first gripper moves the book block into a transfer position brought until the second gripper has gripped the book block in the transfer position. The drive for the second hold-down device is, for example, a pneumatic drive.

In a further advantageous embodiment of the device according to the invention the device has a controller that drives the first gripper and the second Controls the gripper in such a way that the first gripper moves a book block from a zero position moves to the first position while the second gripper pulls a previous book block from a transfer position to the second position. This makes the two work Gripper in synchronism. A front and side edge trimming can therefore be done simultaneously be carried out. This leads to the greatest possible throughput of book blocks by means of the device according to the invention.

In a further advantageous embodiment of the device according to the invention is a device for moving book blocks in one Three-knife trimmer, the three-knife trimmer having a front knife, for performing a Front edge trimming in a first position of the book block and two page knives has, for performing a side edge trimming in a second position of the Carries book blocks, as well as a conveyor table that the book block to a zero position promotes, the conveyor table is pivotally mounted so that access to the Front knife is relieved. Since the front knife is one across the transport path Book blocks, it is usually extremely cumbersome to change the knife the transport path of the book block is difficult to interrupt can. The conveyor table of the feeder of a three-cutter is a good point. The conveyor table advantageously has at least one leg that has a wheel is provided so that the swivel joint can be relieved. In addition, the conveyor table advantageously a lock on to the conveyor table in the operating position locked.

Fig. 1 a

eine schematische Darstellung der Einzelantriebe der erfindungsgemäßen Vorrichtung;

Fig. 1b

eine schematische Seitenansicht der Vorrichtung mit dem Transportpfad der Buchblöcke;

Fig. 2a-1

eine schematische Darstellung des Transportvorgangs und Vorderkantenbeschnitts in einem Dreischneider;

Fig. 3 a,b

eine schematische Darstellung einer Ausführungsform der Greifer der erfindungemäßen Vorrichtung;

Fig. 4 a,b

eine schematische Darstellung einer Ausführungsform des Fördertisches eines Dreischneiders.

Preferred embodiments of the device according to the invention are described in more detail below with reference to the drawing. In a schematic representation:

Fig. 1 a

a schematic representation of the individual drives of the device according to the invention;

Fig. 1b

a schematic side view of the device with the transport path of the book blocks;

2a-1

is a schematic representation of the transport process and leading edge trimming in a three-knife;

3 a, b

is a schematic representation of an embodiment of the gripper of the inventive device;

4 a, b

is a schematic representation of an embodiment of the conveyor table of a three-cutter.

The figures and their description are limited to those essential to the invention Elements. Further, generally known and necessary for the operation of the device Drive, guide and / or control means and cams are only schematic shown or are only described in general form. Same reference numbers identify the same parts in the individual drawings.

As shown in FIG. 1a, the device 100 is in a housing 80 Front knife holder 33 with the associated front knife 23 and two Side knife holders 31, 32 arranged with the associated side knives 21, 22. Each the knife holder 31, 32, 33 is assigned a drive 91, 92, 96 and with a Drive transmission element 93, 94, 97 connected. A controller 99 controls the drives 91, 92, 96 for the movement of the knife holder 31, 32, 33.

A book block 1 is first depending on the format in a first cutting position relative to that Front knife 23 moves. After performing the leading edge trimming, the Book block 1 in a second cutting position in relation to the two page knives brought. After performing the side edge trimming, the book block 1 is made from the Conveyed device 100.

In the side view in FIG. 1b, two grippers 121, 122 are shown which hold the book block 1 in the first cutting position, the second cutting position and the device 100 and out of the device 100. The first gripper 121 is used to illustrate the Cutting position shown twice. The position that the first gripper 121 in FIG. 1b in in the middle is a transfer position in which the book block 1, the one with a Is provided, the second gripper (122) 122 is passed to in to be brought to the second cutting position. The second gripper 122 has one Thrust plate 125, with the book block 1 of which can be pushed onto a display 135, while at the same time a book block 1 'is pulled into the second cutting position.

FIGS. 2a to 21 show the sequence of movements of the first gripper 121 Device according to the invention and its interaction with the device for Carrying out a leading edge trimming and transferring it to the second gripper (122) 122 shown. A book block 1 is placed on a base 191, in particular one Conveying table 191 with transport fingers 190 with its spine first in the arrow marked transport direction pushed. The first gripper 121 is in its Starting position, parked from book block 1 and along the transport path behind the Stop 182. The first gripper is open in this position, e.g. the upper The gripper leg 123 and the lower gripper leg 126 are set apart from one another. in the shown embodiment, the upper gripper leg 123 can be pneumatically lower to grip, and lower and upper gripper legs 123, 126 can be raise, see also the description of Figures 3a and 3b. As in Fig. 2a shown, are at this time the front knife 23, the Front knife hold-down 167, the stop 182, the first hold-down 180 and the second Hold-down device 181 in a passive position set down from the base 191.

As shown in FIGS. 2a to 21, instead of a single book block 1 also act as a stack of books consisting of several identical book blocks 1, in the example shown four book blocks 1. By editing several Book blocks 1 can change the processing speed of the trimming device Book blocks may be accelerated considerably. Such device allow the trimming of a certain book thickness, e.g. 6 cm. It can therefore be at staying in this example also e.g. four or five book blocks 1 with a thickness of 1 cm be cut at the same time. It may be necessary to consider whether the material of the cover of a book block 1 has an influence on the total thickness, which is trimmed in one operation can be.

As shown in Fig. 2b, the stop 182 is in the transport path below moved and the book block 1 transported against the stop and with the straight pushers 190, which correspond to the transport fingers 190 in this embodiment, straight encountered. The book block 1 thereby assumes its zero position. Then moved the first gripper 121 in its zero position and grips the book block 1 such that the Book block 1 can be conveyed at an angle.

The book block 1 is then moved into the first cutting position. The first gripper back a distance marked with the double arrow, which is the width of the Book block 1 corresponds. This distance depends on the format. The first gripper points a signal generator, not shown, which a controller 99 the position of the first Gripper 121 is transmitted so that the controller 99 drives the first, not shown Accordingly, gripper 121 can be driven, so that the required first Cutting position can be approached exactly. When moving the book block 1 can the first gripper 121 also raised the book block 1 to leave unsightly grinding marks to avoid on the book block 1.

As shown in FIG. 2d, the first hold-down device 180 now presses the book block 1 in first cutting position. On the one hand to press the air out of the book block 1 and on the other hand, in order to allow a sufficient fixation of the book block to the absorb transverse forces occurring during the trimming in order to ensure a clean cut guarantee. The cut will be particularly good if the book block 1 before the cut is pressed as close as possible to the knife 23. So next he presses Front knife hold-down device 167 the book block 1, see Fig. 2e before the cut is made, see Fig. 2f.

After performing front trimming in this way, front knives 23, Front knife hold-down device 167 and first hold-down device 180 back to their starting position. At the same time, the spine is lifted using the first gripper and then into the Transfer position, compare Fig. 2g and Fig. 2h pulled and lowered. In the The book block 1 is also transferred from the second hold-down device 181 pressed down so that the alignment of the book block 1 is true to the angle and position preserved.

In the following, the first gripper is released from the book block 1 and first to the rear and then moved back to its starting position under the book block 1. simultaneously the second gripper 122 is moved to the book block 1, see FIGS. 2j, 2k and 21. The second gripper 122 moves the book block 1 to the second cutting position after the second gripper 122 has securely gripped the book block 1 and the second hold-down has Book block 1 has been released. The first gripper 121 is then already waiting for the following book block 1 '. The first gripper 121 is at the time when the second Gripper 122 is already submerged near the spine of book block 1, so that there are no collisions between the first gripper (121) 121 and the second Gripper (122) 122 can come.

The first gripper 121 and the second gripper 122 differ in their construction Essentially only in the thrust plate 125, which the second gripper has and which serves to a book block 1, in which the side edge trimming has already been performed, from the Eject device for trimming book blocks 1. The construction of the grabs is shown in Figures 3a and 3b. The upper gripper leg 123 is by means of one upper gripper actuator 124 connected to the lower gripper leg 126. The lower gripper leg 126 is rotatably supported at a gripper leg pivot point 131. The lower gripper leg 126 is by means of a lower gripper leg actuator 129 and two rods 127, 128, one of the rods 128 around a fastener is rotatable about the pivot point 131. This allows the gripping position of the two gripper legs 123, 126 changed, e.g. be raised. This can do that Lifting the book block 1 at least in the area of the book spine, what the grinding marks when changing between the positions of the book block 1 prevented. The gripper 121, 122 is provided with rollers 133, which are not shown Horizontal guidance are connected. With the upper and lower gripper control element 124, 129 are e.g. around pneumatic cylinders. Others known to those skilled in the art Adjusting elements such as electric motors can also be used.

4a and 4b are details of a conveyor table of a device for moving Book blocks 1 shown by a device for trimming book blocks 1. The Transport fingers 190 are in two parallel, symmetrical to the center line of the Transport path arranged slots 197 guided in the conveyor table 191 and protrude from the housing 80 of the three-cutter 100. The transition between the conveyor table 191 to the housing 80 is by a pivotally mounted bridging plate 193 covered.

The conveyor table 191 has a hinge 192 on one side, with which the conveyor table 191 also the three-knife trimmer 100 is connected. On the other side of the transport path, the Conveyor table 191 a lock with which the conveyor table 191 in the working position can be locked so that the conveyor table 191 is not accidentally during the ongoing operation of the triple cutter 100 from the housing 80 of the triple cutter 100 abschwenkt. So that the joint 192 is relieved, the conveyor table has at least one Conveyor table leg 195, which is connected to the floor by a wheel 196, see above that on the one hand a sufficient support effect is achieved and on the other hand that Swiveling the conveyor table 191 is facilitated. If the conveyor table is swung down, an operator has direct access to the front knife 23 and can thus comfortably Carry out knife changes or other maintenance work. Since the transport elements 121, 122, 190 at the connection point between conveyor table 191 and three-knife trimmer 100 are mechanically decoupled from each other, besides loosening or closing the Lock 194 no further action can be taken to the transport path separate or unite at this point.

List of reference numbers

1, 1 '

book block

23

nose knife

31

first side knife holder

32

second side knife holder

33

Front blade holder

21

first side knife

22

second side knife

61

first knife holder housing plate

80

casing

85

guide rod

86

guide rod

91

Drive of the first side knife holder

92

Drive of the second side knife holder

93

first paddock

94

second paddock

96

Front knife holder drive

97

third paddock

99

control

100

three Schneider

121

first gripper

122

second gripper

125

cleat

123

upper gripper leg

124

upper gripper leg actuator

126

lower gripper leg

127

pole

128

pole

129

lower gripper leg control

131

Gripper arm pivot point

132

fastener

133

role

135

display

167

Front knife down device

180

first hold-down device

181

second hold-down

182

attack

190

Transport fingers, straight shot

191

conveyor table

192

joint

193

bridging plate

194

lock

195

Conveyor table leg

196

wheel

197

slot

Claims (17)

Device for moving book blocks (1) in a triple cutter (100), the triple cutter (100) performing a front edge trimming in a first position of the book block (1) and performing a side edge trimming in a second position of the book block (1),
characterized in that the device has a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position. Device for moving book blocks (1) in a three-knife trimmer (100), the triple cutter (100) having a front knife (23) for performing a front edge trimming in a first position of the book block (1) and two page knives (21, 22) to carry out a side edge trimming in a second position of the book block (1), and a conveyor table (191) which conveys the book block (1) to a zero position,
characterized in that the conveyor table (191) is pivotally mounted such that access to the front knife (23) is facilitated. Device according to one of claims 1 to 2, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that the device has a controller (99) which controls the drive of the first gripper (121) such that the first gripper (121) brings the book block (1) from a fixed zero position to a variable first position, in particular the distance between the zero position and the first position corresponds to the distance from the spine to the front edge of the trimmed book block (1). Device according to one of claims 1 to 3, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized by,
that the device has a controller (99) which controls a drive of the first gripper (121) in such a way that the first gripper (121) brings the book block (1) from the first position into a predetermined transfer position. Device according to one of claims 1 to 5, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that the device has a controller (99) which controls a drive of the second gripper (122) in such a way that the second gripper (122) brings the book block (1) from a predetermined transfer position into the second position. Device according to one of claims 1 to 5, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that the device has at least one signal transmitter which transmits the position of at least one of the grippers (121, 122) to a controller (99) of the device. Device according to one of claims 1 to 6, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that at least one of the grippers (121, 122) has adjusting means (129) which lift the book block (1) in the gripper (121, 122) during transport from one position to another position. Device according to one of claims 1 to 7, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that the device has a first hold-down device (180) which presses down the book block (1) over a large area before the front edge trimming, in particular in order to press air out of the book block (1). Device according to claim 8,
characterized in that the first hold-down device (180) has an elastic surface on the book block side. Device according to one of claims 1 to 9, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that the device has stop means (182) which specify the zero position for the book block (1). Device according to claim 10,
characterized in that the device has straight pushing means (190) which just pushes the book block (1) against the stop means (182) in the zero position. Device according to one of claims 10 to 11,
characterized in that the stop means (182) are movably mounted in the transport path of the book block (1). Device according to one of claims 1 to 12, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that the device has a second hold-down device (181) which is arranged in the vicinity of a transfer position. Device according to claim 13,
characterized in that the device has a controller (99) which controls a drive of the second hold-down device (181) in such a way that the second hold-down device (181) holds the book block (1) down when the first gripper (121) holds the book block ( 1) has brought into a transfer position until the second gripper (122) has gripped the book block (1) in the transfer position. Device according to one of claims 1 to 14, wherein the device comprises a first gripper (121) which brings the book block (1) into the first position and a second gripper (122) which brings the book block (1) into the second position .
characterized in that the device has a controller (99) which drives a drive of the first gripper (121) and the second gripper (122) in such a way that the first gripper (121) moves a book block (1 ') from a zero position into brings the first position, while the second gripper (122) brings a previous book block (1) from a transfer position to the second position. Device according to one of claims 1 to 15, wherein the device comprises a conveyor table (191) which conveys the book block (1) to a zero position,
characterized in that the conveyor table (191) has at least one leg (195) that is provided with a wheel (196). Device according to one of claims 1 to 16, wherein the device comprises a conveyor table (191) which conveys the book block (1) to a zero position,
characterized in that the conveyor table (191) has a lock (194) to lock the conveyor table (191) in the operating position.

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