Device and method for ejecting exposure samples, discharge station and machine for processing sheet-shaped elements

Patent metadata

Field	Value
Publication number	US-2021122132-A1
Application number	US-201816605767-A
Country	US
Kind code	A1
Filing date	Apr 9, 2018
Priority date	Apr 21, 2017
Publication date	Apr 29, 2021
Grant date	—

Abstract

The invention relates to an ejection device ( 2 ) for ejecting sample blanks (P) for a processing machine ( 1 ) for processing elements in sheet form, the processing machine ( 1 ) comprising:
a plurality of work stations ( 300, 400, 500, 600 ) including at least one waste removal station ( 600 ), and a conveying device ( 70 ) comprising a plurality of gripper bars ( 75 ) configured to drive the elements in sheet form through the work stations ( 300, 400, 500, 600 ), the ejection device ( 2 ) being characterized in that it comprises at least one actuating element ( 3 ) able to move between: an inactive position in which the at least one actuating element ( 3 ) is positioned away from the path of the gripper bar ( 75 ), and an active position in which the at least one actuating element ( 3 ) is positioned on the path of the gripper bar ( 75 ), the at least one actuating element ( 3 ) being configured to collaborate with the gripper bar ( 75 ) as the gripper bar ( 75 ) passes by, so as to open the gripper bar ( 75 ) and eject, flat, a sample of blanks (P).

The present invention also relates to a waste removal station, a processing machine for processing elements in sheet form, and to a method for ejecting blanks samples in a machine for processing elements in sheet form.

First claim

1 . An ejection device ( 2 ) for ejecting sample blanks (P) for a processing machine ( 1 ) for processing elements in sheet form, the processing machine ( 1 ) comprising:
a plurality of work stations ( 300 , 400 , 500 , 600 ) including at least one waste removal station ( 600 ), and a conveying device ( 70 ) comprising a plurality of gripper bars ( 75 ) configured to drive the elements in sheet form through the work stations ( 300 , 400 , 500 , 600 ), the ejection device ( 2 ) being characterized in that it comprises at least one actuating element ( 3 ) able to move between: an inactive position in which the at least one actuating element ( 3 ) is positioned away from the path of the gripper bar ( 75 ), and an active position in which the at least one actuating element ( 3 ) is positioned on the path of the gripper bar ( 75 ), the at least one actuating element ( 3 ) being configured to collaborate with the gripper bar ( 75 ) as the gripper bar ( 75 ) passes by, so as to open the gripper bar ( 75 ) and eject, flat, a sample of blanks (P).

2 . The ejection device ( 2 ) according to claim 1 , characterized in that, in the active position, the at least one actuating element ( 3 ) is positioned on the path of the gripper bar ( 75 ) at the exit of a blanks separation tool ( 501 , 502 ) of the blanks separation station ( 500 ) and upstream of an on-the-fly ejector ( 92 ) of the waste removal station ( 600 ).

3 . The ejection device ( 2 ) according to claim 1 , characterized in that, in the active position, the at least one actuating element ( 3 ) is positioned on the path of the gripper bar ( 75 ) to open the gripper bar ( 75 ) when the gripper bar ( 75 ) makes, with the horizontal (H), an angle (α) comprised between 0° and 60°.

4 . The ejection device ( 2 ) according to claim 1 , characterized in that the at least one actuating element ( 3 ) is a cam with a curved active profile ( 17 ), the movement of the gripper bar ( 75 ) along the curved active profile ( 17 ) of the cam forcing an opening followed by a closing of the grippers ( 76 ) of the gripper bar ( 75 ).

5 . The ejection device ( 2 ) according to claim 1 , characterized in that the at least one actuating element ( 3 ) is in an inactive position when the processing machine ( 1 ) is in production.

6 . The ejection device ( 2 ) according to claim 1 , characterized in that it comprises a control member ( 4 ) configured so that actuating thereof commands the actuating element ( 3 ) to move from the inactive position into the active position.

7 . The ejection device ( 2 ) according to claim 1 , characterized in that it comprises a blocking member ( 5 ) arranged in the blanks separation station ( 500 ), configured to prevent the attachment points of the blanks (P) sample from being separated by blocking an upper tool ( 501 ) of the blanks separation tool of the blanks separation station ( 500 ) in the raised position.

8 . The ejection device ( 2 ) according to claim 1 , characterized in that the at least one actuating element ( 3 ) is able to move in the direction of travel (D) of the sheets.

9 . The ejection device ( 2 ) according to claim 1 , characterized in that it comprises at least one actuator ( 14 ) and at least one demultiplication member ( 16 ), the demultiplication member ( 16 ) being configured to be driven by the actuator ( 14 ) and arranged between a fixed part ( 18 ) and the at least one actuating element ( 3 ) to drive the movement of the at least one actuating element ( 3 ) in the active position.

10 . The ejection device ( 2 ) according to claim 1 , characterized in that it comprises movement guidance means ( 15 ) configured to guide the movement of the at least one actuating element ( 3 ) between the active position and the inactive position.

11 . A waste removal station ( 600 ) for a machine for processing elements in sheet form ( 1 ), characterized in that it comprises a sample blanks ejection device ( 2 ) according to claim 1 .

12 . The waste removal station ( 600 ) according to claim 11 , comprising an on-the-fly ejector ( 92 ) for removing sheet waste on the fly, characterized in that the at least one actuating element ( 3 ) of the ejection device ( 2 ) is arranged upstream of the on-the-fly ejector ( 92 ) in the direction of travel (D) of the sheets.

13 . A processing machine ( 1 ) for processing elements in sheet form, characterized in that it comprises a plurality of work stations ( 300 , 400 , 500 , 600 ) including a waste removal station ( 600 ) according to claim 11 and a conveying device ( 70 ) comprising a plurality of gripper bars ( 75 ) configured to drive the elements in sheet form through the work stations ( 300 , 400 , 500 , 600 ).

14 . A method for ejecting sample blanks (P) in a processing machine ( 1 ) for processing elements in sheet form according to claim 13 , characterized in that it comprises the following steps:
the separation of the blanks of at least one cutout sheet in the blanks separation station ( 500 ) is blocked, at least one actuating element ( 3 ) is moved into the path of the gripper bar ( 75 ) at the exit of a blanks separation tool ( 501 , 502 ) of the blanks separation station ( 500 ) and upstream of an on-the-fly ejector ( 92 ) of the waste removal station ( 600 ) to collaborate with the gripper bar ( 75 ) as the gripper bar ( 75 ) passes by, so as to open the gripper bar ( 75 ) and eject, flat, a blanks (P) sample.

15 . The ejection method according to claim 14 , characterized in that, in the active position, the at least one actuating element ( 3 ) opens the grippers ( 76 ) of the gripper bar ( 75 ) to eject, flat, the blanks (P) sample, when the gripper bar ( 75 ) makes, with the horizontal (H), an angle (α) comprised between 0° and 60°.

Assignees

• Bobst Mex Sa

Inventors

• Ruchet Christophe

Classifications

• B65H2402/51

  Joints, e.g. riveted or magnetic joints · CPC title

• B65H2403/513

  involving elongated cam, i.e. parallel to linear transport path · CPC title

• B65H29/585 Primary

  taking samples from the main stream · CPC title

• B65H2404/2693

  Arrangement of belts on movable frame · CPC title

• B26D7/0633

  by grippers · CPC title