Device for depositing individual printed products, supplied in succession, in shingle formation

Abstract

A device for depositing individual printed products (4), preferably magazines, brochures or book blocks, that are supplied in succession by means of a feed conveyor (2) on a downstream conveyor (3) with slower transport speed (v3) in shingle formation (5), wherein said device comprises a stream feeder (1) that receives the printed products (4) from the feed conveyor (2) by means of rotating grippers (6a to e) that are opened and closed in the appropriate cycle with the aid of a stationary cam (12) and deposits the printed products on the downstream conveyor (3). In order to reliably and flawlessly deposit the printed products, particularly thick and/or less flexible printing products, in shingle formation, the stream feeder includes a plurality of grippers (6a to e) that are rotatively driven with a slower speed (v2) than the feed speed (v1), wherein the grippers (6a to e), opened for receiving the printed products, respectively include a short pocket (7) with a bottom stop (8), with which the respectively supplied printed product (4) comes in contact due to the higher feed speed (v1). The clamped transport takes place within an angular range (β) of the rotational movement of the grippers, namely up to a defined distance upstream of a stripping element (10) for reliably releasing the printed products (4). They drop on the downstream conveyor (3) along a short path.

Description

BRIEF DESCRIPTION OF THE DRAWING

One embodiment is described in greater detail below with reference to the drawing, consisting of a single FIGURE.

Claims

1. A device for depositing individual printed products such as magazines, brochures or book blocks that are supplied in succession by means of a feed conveyor having a feed speed onto a downstream conveyor having a slower transport speed in shingle formation, said device comprising: a stream feeder that receives the printed products from the feed conveyor;rotating grippers on said stream feeder that are opened and closed in an appropriate cycle, said rotating grippers being driven with a slower speed than the feed speed of said feed conveyor, said grippers when opened for receiving the printed products having a short pocket with a bottom stop with which the respectively supplied printed product comes in contact due to the higher feed speed of said feed conveyor; anda stripping element on the stream feeder, wherein the printed products are transported up to a defined distance upstream of said stripping element while being clamped by the grippers whereupon said grippers are opened to release and drop the printed products onto the downstream conveyor.

2. The device according to claim 1, wherein said grippers are continuously driven with a constant speed.

3. The device according to claim 1, wherein said stream feeder includes a stationary control cam for causing said grippers to open and close.

4. The device according claim 3 wherein said control cam for the grippers is rotatable on said stream feeder in order to adjust the closing and opening times of the grippers.

5. The device according to claim 1, wherein said stream feeder includes a supporting disk having a surface area that rotates synchronous with said grippers, each said gripper includes a clamping element, said short pocket being formed by said surface area of said supporting disk and said clamping element of the gripper, and each said clamping element has an insertion ramp that points away from the bottom stop.

6. The device according to claim 1, wherein said stream feeder includes a supporting disk having a surface area that rotates synchronous with said grippers, each said gripper includes a clamping element, said short pocket being formed by said surface area of said supporting disk and said clamping element of the gripper, each said clamping element has an insertion ramp that points away from the bottom stop, and said stream feeder includes a stationary cam, said stationary cam for the grippers being rotatable in order to adjust the closing and opening times of the grippers.

7. The device according to claim 1, wherein said stripping element has elasticity.

8. The device according claim 1 wherein said stripping element is arranged approximately tangential to said supporting disk.

9. The device according to claim 1, further including a guide plate that guides the trailing edges of the printed products, said guide plate extending from a path in the direction of the rotational path of the grippers to a path that is essentially directed perpendicular to the downstream conveyor.

10. The device according to claim 1, wherein said stream feeder includes a supporting disk having a surface area that rotates synchronous with said grippers, each said gripper includes a clamping element, said short pocket being formed by said surface area of said supporting disk and said clamping element of the gripper, each said clamping element has an insertion ramp that points away from the bottom stop, and further including a guide plate that guides the trailing edges of the printed products, said guide plate extending from a path in the direction of the rotational path of the grippers to a path that is essentially directed perpendicular to the downstream conveyor.

11. The device according of claim 1, wherein said feed conveyor is arranged such that it extends tangentially toward the rotational path of the grippers and conveys in an obliquely descending fashion.

12. The device according to claim 11, wherein the downstream conveyor is arranged in an obliquely ascending fashion.

13. The device according to claim 12, further including a height adjusting mechanism for the downstream conveyor in order to adjust the distance of the conveyor to the rotational path of the grippers.

14. The device according claim 1, wherein the rotational path segment of said grippers from the receiving of the supplied printed products to the release thereof includes a first angular range in which the printed products come in contact with and are aligned on the bottom stop of the still opened grippers, a second angular range in which the printed products are transported in a clamped fashion and subjected to a change in direction, and a third angular range in which the printed products are released from the reopened grippers.

15. The device according to claim 1, further including a guide plate that guides the trailing edges of the printed products, said guide plate extending from a path in the direction of the rotational path of the grippers to a path that is essentially directed perpendicular to the downstream conveyor, and wherein said stream feeder includes a supporting disk having a surface area that rotates synchronous with the grippers, each said gripper including a clamping element, said short pocket being formed by said surface area of said supporting disk and said clamping element of the gripper, each said clamping element has an insertion ramp that points away from the bottom stop, and the rotational path segment of the grippers from the receiving of the supplied printed products to the release thereof includes a first angular range in which the printed products come in contact with and are aligned on the bottom stop of the still opened grippers, a second angular range in which the printed products are transported in a clamped fashion and subjected to a change in direction, and a third angular range in which the printed products are released from the reopened the grippers.

16. The device according to claim 1, further including a guide plate that guides the trailing edges of the printed products, said guide plate extending from a path in the direction of the rotational path of the grippers to a path that is essentially directed perpendicular to the downstream conveyor, and a supporting disk having a surface area that rotates synchronous with said grippers, each said gripper including a clamping element, said short pocket being formed by said surface area of said supporting disk and each said clamping element of the gripper, said clamping element having an insertion ramp that points away from the bottom stop, and wherein said stream feeder includes a stationary control cam for causing said grippers to open and close, said control cam for the grippers is rotatable on said stream feeder in order to adjust the closing and opening times of the grippers.

17. The device according to claim 1, wherein the downstream conveyor includes at least two conveying means that revolve around deflection pulleys parallel to one another and include pushers that are arranged within identical distances from one another and act upon the trailing edges of the dropped printed product.

18. The device according to claim 1, further including a holding element that is arranged above the downstream conveyor and pushes the deposited printed product against the pushers of the conveyor.

19. The device according to claim 1, wherein said stripping element is arranged approximately tangential to the supporting disk, and said stripping element has elasticity.

20. The device according to claim 1, further including a guide plate that guides the trailing edges of the printed products, said guide plate extending from a path in the direction of the rotational path of the grippers to a path that is essentially directed perpendicular to the downstream conveyor, and wherein said stream feeder includes a stationary control cam for causing said grippers to open and close, said control cam for the grippers being rotatable on said stream feeder in order to adjust the closing and opening times of the grippers, said stream feeder includes a supporting disk having a surface area that rotates synchronous with said grippers, each said gripper including a clamping element, said short pocket being formed by said surface area of said supporting disk and said clamping element of the gripper, said clamping element having an insertion ramp that points away from the bottom stop, and the downstream conveyor includes of at least two conveying means that revolve around deflection pulleys parallel to one another and include pushers that are arranged within identical distances from one another and act upon the trailing edges of the dropped printed product and a holding element that is arranged above the downstream conveyor and pushes the deposited printed product against the pushers of the conveyor.

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