Device for loading insert sheets, station for receiving blanks, machine for processing elements in the form of sheets and method for transporting an insert sheet

Patent metadata

Field	Value
Publication number	US-10569984-B2
Application number	US-201716076361-A
Country	US
Kind code	B2
Filing date	Feb 7, 2017
Priority date	Feb 12, 2016
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

An insert sheet loading device (10) comprising a movable carriage (12; 12′) for inserting insert sheets into a receiving area (2) of a blank-receiving station (500). The movable carriage (12; 12′) has a plurality of longitudinal bars (27a, 27b). At least one longitudinal bar (27a) has a suction channel (35) leading out, via at least one suction opening (30), onto the surface of the longitudinal bar (27a) for receiving an insert sheet, the suction channel (35) is connected to a vacuum source (31) for holding, by suction, the insert sheet transported by the movable carriage (12; 12′). Also a blank-receiving station, a sheet-shaped element processing machine, and a method for transporting an insert sheet in a receiving area of a blank-receiving station are disclosed.

First claim

The invention claimed is:

1. A loading device for loading insert sheets into a stack of blanks, the loading device comprising:
a mobile carriage for insertion of insert sheets in a receiving region of a station for receiving the blanks;
the mobile carriage comprising a plurality of longitudinal bars
at least one of the longitudinal bars comprises a suction duct opening comprising at least one suction orifice onto the face of the longitudinal bar such that the at least one suction orifice is configured to receive an insert sheet, the suction duct being configured to be connected to a vacuum source in order to maintain by suction the insert sheet transported by the mobile carriage,
wherein the suction orifice has a staged shape including at least a first stage having a first suction cross section and a second stage having a second suction cross section that is smaller than the first suction cross section;
the first stage opening onto the face of the at least one longitudinal bar configured to receive an insert sheet; and
the second stage opening into the suction duct.

2. A loading device according to claim 1 , wherein the at least one longitudinal bar has at least one suction orifice is a hollow profile having an interior which forms the suction duct.

3. A loading device according to claim 1 , wherein the plurality of longitudinal bars comprises two longitudinal bars, each of the two longitudinal bars having at least one suction orifice.

4. A loading device according to claim 1 , wherein at least one of the suction orifices is arranged in a central region of the mobile carriage.

5. A loading device according to claim 1 , wherein the at least one of the longitudinal bars has a plurality of regularly spaced suction orifices.

6. A loading device according to claim 5 , wherein the suction duct of the at least one longitudinal bar is connected to a hollow crossmember of the mobile carriage.

7. A loading device according to claim 1 , wherein the suction cross sections of the first stage and of the second stage have concentric circular shapes.

8. A loading device according to claim 1 , wherein a ratio between the suction cross section of the first stage and the cross section of the second stage is between 2 and 50.

9. A loading device according to claim 1 , wherein the loading device is configured to form a non-stop receiving grid for blanks that is configured to support blanks deposited on the insert sheet.

10. A loading device according to claim 1 , further comprising a plate arranged below the at least one longitudinal bars.

11. A station for receiving blanks of a machine for processing elements in the form of sheets, the station comprising the loading device according to claim 1 .

12. A machine for processing elements in the form of sheets, the machine comprising the station for separating blanks according to claim 11 .

13. A loading device for loading insert sheets into a stack of blanks, the loading device comprising:
a mobile carriage for insertion of insert sheets in a receiving region of a station for receiving the blanks;
the mobile carriage comprising a plurality of longitudinal bars
at least one of the longitudinal bars comprises a suction duct opening comprising at least one suction orifice onto the face of the longitudinal bar such that the at least one suction orifice is configured to receive an insert sheet, the suction duct being configured to be connected to a vacuum source in order to maintain by suction the insert sheet transported by the mobile carriage; at least one rotating roller elastically biased against the mobile carriage, for rolling on the insert sheet during the movement of the mobile carriage toward the receiving region.

14. A loading device according to claim 13 , wherein the rotating roller is configured to roll on the insert sheet along a longitudinal bar having at least one suction orifice.

15. A loading device according to claim 13 , further comprising at least one elastic strip having a first end which bears the rotating roller and a second end to a device for grasping sheets of the loading device.

16. A method for transporting an insert sheet in a receiving region of a station for receiving blanks by a loading device for loading insert sheets into a stack of blanks, the loading device including:
a mobile carriage for insertion of insert sheets in a receiving region of a station for receiving the blanks;
the mobile carriage comprising a plurality of longitudinal bars
at least one of the longitudinal bars comprises a suction duct opening comprising at least one suction orifice onto the face of the longitudinal bar such that the at least one suction orifice is configured to receive an insert sheet, the suction duct being configured to be connected to a vacuum source in order to maintain by suction the insert sheet transported by the mobile carriage, the method comprising:
applying a low suction pressure to at least one suction orifice of the mobile carriage when the mobile carriage bears an insert sheet and is controlled in movement toward the receiving region; and
stopping the low suction pressure when the mobile carriage stops in the receiving region,
wherein blowing takes place through the at least one suction orifice of the mobile carriage when the mobile carriage is in the receiving region and the low suction pressure is stopped.

Assignees

• Bobst Mex Sa

Inventors

• Chatry Patrice
• Paubel Anthony
• Steiner Maude

Classifications

• B65H2406/351

  facing the surface of the handled material · CPC title

• B65H2701/1764

  Cut-out, single-layer, e.g. flat blanks for boxes · CPC title

• B65H29/044 Primary

  conveying through a machine · CPC title

• B65H31/32

  Auxiliary devices for receiving articles during removal of a completed pile · CPC title

• B65H2405/323

  Cantilever finger member, e.g. reciprocating in parallel to plane of handled material · CPC title