公开(公告)号：WO2022002763A1

公开(公告)日：2022-01-06

申请号：PCT/EP2021/067418

申请日：2021-06-24

Applicant: PAPER CONVERTING MACHINE COMPANY S.P.A.

Inventor： GIANNELLI, Samuele

IPC: B26D1/16 ,  B26D3/16 ,  B26D7/12 ,  B24B3/46 ,  B24B49/10 ,  B26D2210/11

Abstract: A description is given of a control method for controlling the process of sharpening the cutting blade of a cutting machine, in particular a cutting machine used for cutting logs of sheet material, in particular paper, comprising at least one sharpening wheel, wherein said cutting blade and said at least one sharpening wheel are formed in an electrically conductive material and said at least one sharpening wheel is electrically insulated from the rest of the structure that forms the cutting machine and is controlled by a PLC controller, comprising the steps consisting of: bringing said at least one sharpening wheel close to said cutting blade in such a way as to cause the closure of a circuit when the contact between the two components establishes an electrical connection; measuring a contact signal in said circuit which depends on the quality of the electrical connection generated between sharpening wheel and cutting blade, this contact signal having zero value when no electrical connection is established; comparing the contact signal with a reference signal; and, alternatively sending an input signal to the PLC controller to launch a phase of sharpening of the cutting blade by acting on the sharpening wheel if the contact signal is greater than or equal to the value of the reference signal; launching a maintenance operation if the contact signal is lower than the value of the reference signal.

公开(公告)号：WO2022023345A1

公开(公告)日：2022-02-03

申请号：PCT/EP2021/071009

申请日：2021-07-27

Applicant: PAPER CONVERTING MACHINE COMPANY S.P.A.

Inventor： FRANCESCONI, Gerardo ,  PELLEGRINI, Fabio

IPC: B24B3/46 ,  B26D1/16 ,  B26D5/00 ,  B26D7/12 ,  G05B19/4065 ,  B24B49/12

Abstract: A description is given of a system for controlling the quality of products in output from a cutting machine, in particular a cutting machine used for cutting logs of sheet material, in particular paper, having at least one cutting disc (11) and a sharpening wheel (14), said control system comprising a PLC controller (20) suitable for controlling the cutting and sharpening process and an inspection system (S) suitable for scanning, at a specific time instant (t(k)), a set of quality values (Qout) of a roll (15) in output from the cutting machine, wherein a processing unit (D) receives said set of quality values (Qout) of the roll (15) in output and sends to the PLC controller (20) a command aimed at performing an action consisting of increasing or decreasing one of the following parameters: - sharpening time (∆tsharp) - sharpening frequency (fsharp) - differential speed (∆v) between said wheel (14) and said disc (11) based on the comparison between said set of quality values (Qout) and a reference quality value (Qsetpoint) and of the action carried out at the previous time instant (t(k-1)).

公开(公告)号：US20230321857A1

公开(公告)日：2023-10-12

申请号：US18016734

申请日：2021-07-27

Applicant: PAPER CONVERTING MACHINE COMPANY S.P.A.

Inventor： Gerardo Francesconi ,  Fabio Pellegrini

IPC: B26D7/12 ,  B26D5/00 ,  B26D7/08 ,  B24B3/46

CPC classification number: B26D5/007 ,  B24B3/46 ,  B26D7/088 ,  B26D7/12 ,  B26D1/16

Abstract: “A system controls the quality of products in output from a cutting machine, for instance, a log saw that has at least one cutting disc and a sharpening wheel. The control system comprises a PLC controller suitable for controlling the cutting and sharpening process and an inspection system suitable for scanning at a specific time instant, a set of quality values of a roll in output from the cutting machine. A processing unit receives the set of quality values and sends to the PLC controller a command aimed at performing an action consisting of increasing or decreasing one of the following parameters: sharpening time, sharpening frequency, and differential speed between the wheel and the disc, based on the comparison between the set of quality values and a reference quality value, and the action carried out at the previous time instant”.

公开(公告)号：EP3944925A1

公开(公告)日：2022-02-02

申请号：EP21182055.0

申请日：2021-06-28

Applicant: Paper Converting Machine Company S.p.A

Inventor： FRANCESCONI, Gerardo ,  PELLEGRINI, Fabio

IPC: B24B3/46 ,  B26D1/16 ,  B26D5/00 ,  B26D7/12 ,  G05B19/4065 ,  B24B49/12

Abstract: A description is given of a system for controlling the quality of products in output from a cutting machine, in particular a cutting machine used for cutting logs of sheet material, in particular paper, having at least one cutting disc (11) and a sharpening wheel (14), said control system comprising a PLC controller (20) suitable for controlling the cutting and sharpening process and an inspection system (S) suitable for scanning, at a specific time instant (t(k)), a set of quality values (Q out ) of a roll (15) in output from the cutting machine, wherein a processing unit (D) receives said set of quality values (Q out ) of the roll (15) in output and sends to the PLC controller (20) a command aimed at performing an action consisting of increasing or decreasing one of the following parameters:
- sharpening time (Δt sharp )
- sharpening frequency (f sharp )
- differential speed (Δv) between said wheel (14) and said disc (11) based on the comparison between said set of quality values (Q out ) and a reference quality value (Q setpoint ) and of the action carried out at the previous time instant (t(k-1)).