EP1790604A1 - Method and device for lifting folded print shop products from a conveying device - Google Patents

Abstract

The installation has a lifting device (5) e.g. wire frame, positioned on a leading side of a saddle (2), where the saddle is provided for conveyance of a printed product (1). An upper edge (10) of the lifting device extends parallel to a support shoulder (3) along an entire length of the upper edge. The saddle is suspended in a conveyor track by supports (27), and conveyed based upon a rotating conveyor track through a gathering system by a chain. A frame end (7) serves as a control element by shifting the device as required against a force of a resetting spring (8). An independent claim is also included for a method for the operation of the installation for the lifting of folded printed products.

Description

The invention relates to an apparatus and a method for lifting folded printed products from a conveyor according to the preamble of the respective independent claims.

STATE OF THE ART

The CH 683 767 A5 discloses a method for removing stapled and folded printed products from the pads of a saddle stitcher. The printed products are guided on a saddle-shaped, slightly built edition to a stapler. The pads have a comb-like support shoulder on which rest the folded printed products. The support shoulders have on the one hand recesses for Umbiegevorrichtungen, which are aufstossbar from below to the support shoulders, and on the other hand recesses for Aushebestössel. When stapling the pads are conveyed via a stitching wheel, and a Umbiegevorrichtung is guided by the corresponding recess of the support in the stapling position. Subsequently, the printed product is lifted by the Aushebestössel, which poke through more recesses of the support shoulder of the support shoulder and can be removed by, for example, a gripper. Due to the principle so must the Aushebestössel and the Umbiegevorrichtung, seen along the support shoulder, be arranged at different locations. This limits the possibilities for arranging stapling points and gripping points.

EP 0 202 507 A3 shows rod-shaped, thin pads, over which the printed products are hung. For stapling a Umbiegevorrichtung or anvil is guided from below against the pads and lifts the printed products from the pad. The printed products are now on the Umbiegevorrichtung and stapled. Subsequently, the Umbiegevorrichtung is led away again and the printed products are placed on the pads. To lift the printed products, a blade is guided past the thin support from below, so that the printed products are lifted and gripped by a pair of rollers.

In the EP 0 218 804 A1 False printed products are lifted in a collecting conveyor a collection drum: The accumulation conveyor has a retaining strip, which forms a ridge and is provided on both sides with support plates. The printed product lies with the fold over the retaining strip and the support plates. For lifting take-off fingers are pivoted through slots in the retaining strip, so that the printed products on the one hand lifted and on the other hand conveyed along the retaining strip. In this lifted state, additional clamping devices can drive under the lifted printed product, lift it off the collecting conveyor and transport it away.

PRESENTATION OF THE INVENTION

It is therefore an object of the invention to provide a device and a method for lifting folded printed products from a conveyor of the type mentioned, which remedy the above-mentioned disadvantages.

This object is achieved by a device and a method for lifting folded printed products from a conveyor with the features of the corresponding independent claims.

In the device for lifting folded printed products from a conveyor, in which conveyor the printed products astride rest on a saddle and are transported, so the saddle has a counter tool for processing resting on the saddle printed products. In this case, a lifting means extends along the saddle and parallel to this and the lifting means is arranged offset in the transverse direction with respect to a support shoulder of the saddle and with respect to the counter-tool.

Since the lifting means with respect to the support shoulder and in particular with respect to the counter tools are not arranged on a line but offset, a free arrangement of stapling points along the support shoulder is possible. There is no need to be concerned with the position of lifting racks or levers for lifting the printed products in the support shoulder.

It is thus also possible that the support shoulder runs without recesses for a lifting means along the entire length of the saddle. The term "length" of the saddle refers here and below to the direction of maximum extension of the support shoulder, ie the direction parallel to the fold of the printed product. The transverse direction of the support shoulder is perpendicular to it. This transverse direction is in turn parallel to a longitudinal direction or conveying direction of a collection system in which the saddles are conveyed. It is also possible that the support shoulder runs completely without recesses along the entire length of the saddle. The saddle can be made correspondingly narrow, yet solid and stable.

Further, it is possible that the counter tool, for example a clincher for a stapler, is mounted movably in the support shoulder or fixedly connected to the support shoulder or even integrally formed on the support shoulder. Thus, several Umbieger can be arranged along the support shoulder, which can then also be referred to as Umbiegebalken.

In a preferred embodiment of the invention, an upper edge of the lifting means runs along the entire length of the upper edge parallel to the support shoulder. When lifting the lifting means so the inside of the fold is on the entire length at the top.

In another preferred embodiment of the invention, an upper edge of the lift-off means extends in first regions parallel to the support shoulder, the print product being supported by these first regions during lift-off. In at least a second area, the top edge has an offset or a depression or a depression relative to the first areas. This makes it possible to take in the region of this offset the printed product with a clamping means. For example, the printed product can be grabbed with a gripper and transported away. Alternatively, it is also possible to control the lifted printed product in this area with a clamping device designed as a thickness measuring device. This thickness measurement may also be combined with gripping, i. that the gripper can both transport the printed product and measure its thickness.

If the thickness of the printed product falls below a predetermined desired thickness, it can be concluded that the printed product is incomplete. In this case, the printed product is not conveyed away in a preferred variant of the invention, but is lowered by the lifter back to the support shoulder and remains for error handling in the collection device.

In another preferred embodiment of the invention, the lifting means is a flat plate, for example a sheet metal plate. The sheet metal plate nestles in a lower position on a side of the saddle, so that the contour of the saddle is not significantly changed by the adjacent sheet metal plate. The sheet metal plate is displaceable parallel in a sliding guide and is moved to lift the printed product parallel in an upper position. In this case, an upper edge of the sheet metal plate moves away from the saddle, and the printed product lies on this upper edge. The above-mentioned offset of the upper edge is preferably formed by a recess or indentation in the upper region of the plate.

In another preferred embodiment of the invention, the lifting means is a wire bow. The wire bracket is guided in each case in the two longitudinal ends of the saddle in a parallel guide, which allows a parallel displacement perpendicular to the longitudinal direction of the support shoulder. In the central region along the saddle of the wire hanger runs either completely parallel to the support shoulder, or is offset in at least one area, as already explained above.

Alternatively, the lifting means may be a flat plate whose upper edge pushes from the inside into the fold of the printed product. Also this plate can, according to the offset of the upper edge, have a recess whose position along the support shoulder corresponds to the position of a gripper or thickness gauge.

In principle, it is also possible that the device has two lifting means. In this case, the first lifting means on a leading side of the saddle and the second lifting means on a trailing side of the saddle is arranged (with respect to the conveying direction or the transverse direction of the support shoulder). This makes it possible to raise the printed products at different points in a collection system, wherein at these different locations respectively differently arranged clamping means the printed product at different Can grab points along the support shoulder. For this purpose, the upper edges of the two lifting means are preferably shaped differently, and in particular have one or more locations with an offset in different areas along the support shoulder.

• Sammeln und/oder Transportieren eines Druckereiproduktes auf der Auflageschulter des Sattels, Abheben des Druckereiproduktes von der Auflageschulter durch das Abhebemittel und Ergreifen des Druckereiproduktes durch ein Klemmittel; und/oder
• Sammeln und/oder Transportieren des Druckereiproduktes auf dem Abhebemittel im abgehobenen Zustand, Absenken des Druckereiproduktes auf die Auflageschulter und Heften des Druckereiproduktes.

The said method for lifting folded printed products from a conveyor comprises the following steps:

• Collecting and / or transporting a printed product on the support shoulder of the saddle, lifting the printed product from the support shoulder by the lifting means and gripping the printed product by a clamping means; and or
• Collecting and / or transporting the printed product on the lifting means in the off-hook condition, lowering the printed product onto the support shoulder and stapling the printed product.

So it can be collected on the support shoulder or on the lifter in the upper position or only transported the printed matter. Depending on which operation is to be performed then the lifter is moved to the appropriate position if necessary, so for stapling down or for gripping upwards. Basically, these operations such as collecting, stapling, gripping (including measuring) can be performed in any order. The lifter or lifters allow to bring the printed product in different positions, in which different tools can be activated. Certain operations require a certain position of the lifter, while other operations, especially collection, are basically possible at all positions of the lifter.

• Messen einer Dicke des Druckereiproduktes durch die Dickenmessvorrichtung; und optional
• Absenken des Druckereiproduktes auf die Auflageschulter durch Senken des Abhebemittels.

If the clamping means is a gripper, the method preferably comprises, as a further step, the conveying away of the printed product by the gripper. If that Clamping means is a thickness measuring device, the method has as further steps:

• Measuring a thickness of the printed product by the thickness measuring device; and optional
• Lowering the printed product on the support shoulder by lowering the lift-off.

Further preferred embodiments emerge from the dependent claims. Characteristics of the method claims are analogously combined with the device claims and vice versa.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following, the subject invention will be explained in more detail with reference to preferred embodiments, which are illustrated in the accompanying drawings. Figures 1 and 2 show a perspective view of a saddle with a wire hanger as a lifter in a lower and in an upper position. Figure 3 shows a view with a metal plate as a lifter. The reference numerals used in the drawings and their meaning are listed in the list of reference numerals.

WAYS FOR CARRYING OUT THE INVENTION

FIG. 1 schematically shows a perspective view of a saddle 2 for conveying a printed product 1. The printed product 1 is folded and placed with the fold or back over a support shoulder 3 of the saddle 2. The support shoulder 3 has one or more counter tools such as clincher 4 for a stapler. The Umbieger 4 can be designed passive or active, so be yourself movable.

Because of the forces, as they occur during stapling, the Umbieger 4 and the saddle 2 must be constructed correspondingly solid and stable. This is in contrast to saddles 2, which are intended only for conveying and are therefore designed to be light and thin. In such prior art lightweight saddles 2, a clincher is moved to a stapling position, for example, by a stitching wheel for stapling.

At least one side of the support shoulder 3, a lifter 5 is arranged. The lifter 5 extends along the longitudinal direction of the saddle 2 and the support shoulder 3, that is substantially parallel to these. In a transverse direction of the saddle 2 (that is to say perpendicular to the longitudinal direction mentioned), the lifting device 5 is arranged offset with respect to the support shoulder 3. This transverse direction of the saddle 2 is in a collection system, which collects on a straight line, usually equal to the conveying direction F of the printed products 1. The lifter 5 can be arranged in the transverse direction or conveying direction F before or behind the support shoulder 3. From the saddle 2 extend, before and behind the support shoulder 3, sheets 12, 12 'made of spring steel substantially downwards. A lying on the support shoulder 3 printed product 1 is applied to the steel sheets 12, 12 '. The one or more lifters 5 are arranged on the inside of one of the steel sheets 12, 12 ', but on the outside of the support shoulder 3, ie between the saddle 2 and one of the steel sheets 12, 12'. The saddle 2 is mounted on brackets 27 in a conveyor track and is supported by not shown elements such as a chain on a rotating conveyor track through the collection system.

In the figure 1 , the lifter 5 is drawn in a lower, inactive or home position, in Figure 2 , the lifter 5 is drawn in an upper, active or raised position. In the raised position, a gripper 11 is shown by dashed lines.

A strap end 7 acts as a control by shifting the lifter 5 against the force of a restoring spring 8 as required by a link on the conveyor track. In this case, the lifter 5 is displaced by a parallel guide 6 substantially parallel. Of course, the lifters 5 can also be moved in other ways.

In a preferred embodiment of the invention, the lifter 5 is formed from a solid wire and has at least one offset 9 of the upper edge 10. The upper edge 10 has first, non-offset areas 22, 25, which push the fold of the printed product 1 from the inside upwards when lifting the printed product 1. In the region of the offset 9 with respect to the first regions, the raised printed product 1 can be packed and transported away by a gripper 11, or the thickness of the printed product 1 can be measured without the siphon 5 influencing the measurement.

The wire hanger preferably comprises: a first portion 21 and a sixth portion 26, each of which is perpendicular to the support shoulder 3 and each in an associated parallel guide 6, 6 'are displaceable, a second portion 22 and a fifth portion 25, each parallel to Support shoulder 3 run and are arranged collinear with each other, an offset portion 9 which is parallel to the support shoulder 3 and offset from the second 22 and fifth section 25, and a third portion 23 between the second portion 22 and the offset portion 9 and a fourth portion 24th between the offset portion 9 and the fifth portion 25.

• Figur 3 zeigt eine entsprechende Ausführungsform der Erfindung mit einer Blechplatte 15 als Abheber 5. Der Einfachheit wegen sind nur die wesentlichen Elemente des Sattels 2 und der Umbieger 4 eingezeichnet. Die Halterung 27 des Sattels 2 ist strichliert gezeichnet. Die Blechplatte 15 ist entsprechend der Form der in Förderrichtung F vorlaufenden Seite des Sattels 2 geformt. Insbesondere schmiegt sich ein Auflageabschnitt 16 der Blechplatte 15 in ihrer unteren Stellung an eine vorlaufende Auflageflanke 13 der Auflageschulter 3 an. Grundsätzlich liesse sich alternativ oder zusätzlich ein Abheber 5 an der nachlaufenden Auflageflanke 14 anordnen. Ferner lassen sich auch mehrere Abheberplatten 5 an derselben Seite des Sattels 2 und beispielsweise auch mit derselben Parallelführung anordnen.

When using a plate instead of the wire hanger, the top edge 10 of the plate may have sections which extend as well as the said sections of the wire hanger:

• Figure 3 shows a corresponding embodiment of the invention with a metal plate 15 as a lifter 5. For simplicity, only the essential elements of the saddle 2 and the bender 4 are located. The holder 27 of the saddle 2 is drawn by dashed lines. The metal plate 15 is shaped according to the shape of the leading in the conveying direction F side of the saddle 2. In particular, a support portion 16 of the metal plate 15 nestles in its lower position against a leading support flank 13 of the support shoulder 3. In principle, alternatively or additionally, a lifter 5 could be arranged on the trailing support flank 14. Furthermore, several Abheberplatten 5 can be arranged on the same side of the saddle 2 and, for example, with the same parallel guide.

The lifter or lifters 5 are secured by means of a parallel guide 20, 20 ', in particular a sliding guide, on the saddle 2 and in a direction of movement B between a lower, adjacent position and an upper lift-off position. The movement is caused for example by a control such as a roller 7 'via a backdrop.

The metal plate 15 has a main surface 19, which is substantially planar and with its surface forms part of the parallel guide 20 by the metal plate 15 slides along the saddle 2. At the lower part of the main surface, the control rollers 7 'are attached. At the upper part of the main surface 19, a support surface 17 of the metal plate 15 is bent by a bend 18 with respect to the main surface 19 to the edge 13 of the support shoulder 3 out. Thus, the sheet metal plate 15 is in the lower position close to the saddle 2.

Along the upper edge 10 of the metal plate 15 on the one hand collinear support portions 16 are formed on one side, on which the printed product 1 is located when lifting with the inside of the fold. On the other hand, there is an offset section 9 of the upper edge 10 between the support sections 16, so that there is thus a recess in the sheet metal plate 15.

As explained in the preceding embodiment, therefore, when the plate 15 is raised, the product 1 which has been raised can be gripped in the region of the recess and / or its thickness can be measured. In the presence of several Abheberplatten 5, these recesses, which lie in the direction along the support shoulder 3 at different locations.

LIST OF REFERENCE NUMBERS

1

printing product

2

saddle

3

supporting shoulder

4

benders

5

lifter

6, 6 '

parallel guide

7

role

7 '

Ironing end

8th

Return spring

9

Offset of the top edge

10

the top edge

11

grab

12, 12 '

sheets

13

leading edge

14

trailing support edge

15

sheet metal plate

16

bearing section

17

bearing surface

18

kink

19

main area

20, 20 '

parallel guide

21 ... 26

first to sixth section

27

bracket

F

conveying direction

B

Direction of movement of the lifter

Claims (16)

Apparatus for lifting folded printed products (1) from a conveying device, in which conveying device the printed products (1) are placed astride and transported on a saddle (2), characterized in that the saddle (2) is a counter-tool (4) for processing of printed products (1) resting on the saddle (2), and in that a lifting means (5) extends along the saddle (2) and parallel thereto and transversely with respect to a support shoulder (3) of the saddle (2) and the counter-tool (4) is arranged offset. Device according to claim 1, characterized in that the bearing shoulder (3) extends without recesses for a lifting means along the entire length of the saddle (2). Device according to claim 1 or 2, characterized in that the counter-tool (4) is a bender (4) for a stapling device. Device according to one of the preceding claims, characterized in that an upper edge (10) of the lifting means (5) over the entire length of the upper edge (10) parallel to the support shoulder (3). Device according to one of claims 1 to 3, characterized in that an upper edge (10) of the lifting means (5) in first areas (16; 22, 25) parallel to the support shoulder (3), wherein the printed product (1) when lifted by these first areas are supported, and the upper edge (10) has an offset (9) with respect to the first areas in at least one second area. Apparatus according to claim 4 or 5, characterized in that the lifting means (5) is a flat or curved plate (15), wherein the edges on one side of the plate (15) form an upper edge (10) of the lifting means (5). Device according to claim 6, characterized in that the upper edge (10) of the lift-off means (5) has support sections (16) which run parallel to the support shoulder (3) and are arranged collinear with each other, and the upper edge (10) has an offset section (Fig. 9). Apparatus according to claim 6 or 7, characterized in that the upper edge (10) on a support surface (17) is formed, the support surface (17) via a kink (18) with a main surface (19) of the lift-off (5) is connected and the support surface (17) rests against a flank (13, 14) of the support shoulder (3) in a lowered state of the lift-off means (5). Device according to one of claims 4 or 5, characterized in that the lifting means (5) is a wire bow. Device according to claim 9, characterized in that the wire hanger comprises: a first section (21) and a sixth section (26) which each run perpendicular to the support shoulder (3) and are each displaceable in an associated parallel guide (6, 6 ') , a second portion (22) and a fifth portion (25), each parallel to the support shoulder (3) and collinear with each other, have an offset portion (9) parallel to the support shoulder (3) and offset from the second (22nd) ) and fifth section (25), and a third section (23) between the second section (22) and the offset section (9) and a fourth section (24) between the offset section (9) and the fifth section (25 ). Device according to one of the preceding claims, characterized in that the lifting means (5) for lifting the printed product (1) by a control element (7, 7 ') is movable, preferably against one or more return springs (8). Device according to one of the preceding claims, characterized in that the device comprises two lifting means (5), wherein the first lifting means (5) on a leading side of the saddle (2) and the second lifting means (5) on a trailing side of the saddle (5). 2) is arranged. Apparatus according to claim 12, characterized in that the upper edges (10) of the two lifting means (5) are shaped differently, and in particular at one or more locations an offset (9) in different areas along the support shoulder (3). Method for operating the device according to one of the preceding claims, comprising the following steps: Collecting and / or transporting a printed product (1) on the support shoulder (3) of the saddle (2), • Lifting the printed product (1) from the support shoulder (3) by the lifting means (5), and • gripping the printed product (1) by a clamping means; and / or the following steps Collecting and / or transporting a printed product (1) on the lifting means (5) in the lifted state, • Lowering the printed product (1) on the support shoulder (3) and • Stapling the printed matter (1). A method according to claim 14, characterized in that the clamping means is a gripper (11), and the method comprises the further step: • Carrying away the printed product (1) by the gripper (11). A method according to claim 14, characterized in that the clamping means is or has a thickness measuring device, and the method comprises the further steps: Measuring a thickness of the printed product (1) by the thickness measuring device; and optional • Lowering of the printed product (1) on the support shoulder (3) by the lifting means (5).

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