Claims
- 1. A system for cutting and creasing an indefinite weblike material for processing successive jobs, comprising:
- a first set of creasing tools;
- a second set of creasing tools;
- a first set of cutting tools for dividing said weblike material into a first set of endless strips;
- a second set of cutting tools for dividing said weblike material into a second set of endless strips;
- positioning means for positioning said cutting and creasing tools;
- said first set of cutting tools and said second set of cutting tools each including a pair of cutting tools for generating lateral longitudinal trim cutting lines which generate a longitudinal trim on each side of said weblike material; and
- a first auxiliary cutting member positioned on each side of the weblike material for making cuts not parallel with the direction of advance of the weblike material for trims along edges of the weblike material;
- wherein each first auxiliary cutting member makes a joining cut between the longitudinal trim cutting lines produced by cutting tools of said first set of cutting tools and the longitudinal trim cutting lines produced by the cutting tools of said second set, without transversely severing the trims.
- 2. The system as claimed in claim 1, operating on at least two levels, comprising at least one second auxiliary cutting member for making a cut not parallel with the direction of advance of the weblike material between two successive longitudinal cut lines at the point where a change of job occurs, which second auxiliary cutting member makes a joining cut between two successive longitudinal cut lines that divide the weblike material into two strips conveyed onto two different levels.
- 3. The system as claimed in claim 2, in which said at least one second auxiliary cutting member is a pressurized-water nozzle.
- 4. The system as claimed in claim 2 in which said first auxiliary members and optionally said at least one second auxiliary cutting member are located downstream of the creasing tools and the cutting tools.
- 5. The system as claimed in claim 2 in which said first auxiliary cutting members and optionally said at least one second auxiliary cutting member are supported by a frame that supports said cutting tools and said creasing tools, said frame being transversely movable in order to follow any transverse wandering of the weblike material.
- 6. The system as claimed in claim 2, in which said at least one second auxiliary cutting member is mounted on a carriage able to move transversely with respect to the direction of advance of the weblike material.
- 7. The system as claimed in claim 2, in which said at least one second auxiliary cutting member is vertically movable so as to withdraw from the weblike material in emergencies.
- 8. System as claimed in claim 1, in which said first auxiliary cutting members are pressurized-water nozzles.
- 9. The system as claimed in claim 8, comprising a pump for a hydraulic fluid, which feeds a pressure multiplier, while an accumulator of said hydraulic fluid is located between said pump and said pressure multiplier, and said pressure multiplier drives a system that pumps water at high pressure for said auxiliary cutting members.
- 10. The system as claimed in claim 1, comprising suction nozzles for sucking in the trims, these nozzles being adjustable transversely with respect to the direction of advance of the weblike material, said first auxiliary cutting members being carried by said suction nozzles and being movable transversely together with said suction nozzles.
- 11. The system as claimed in any one of claim 10, in which means are provided in said suction nozzles to dissipate kinetic energy of a jet of water generated by said first auxiliary cutting members.
- 12. The system as claimed in claim 1, in which said first and second sets of creasing tools are located adjacent to each other in series and upstream of said first and second sets of cutting tools with respect to the direction of advance of the weblike material, the suction nozzles being located downstream of said sets of cutting tools.
- 13. The system as claimed in claim 1, wherein said first auxiliary cutting members are able to move toward and away from the weblike material.
- 14. A method for cutting and creasing a weblike material of indefinite length for processing successive jobs, comprising the following stages:
- making a series of longitudinal cut lines for a first job and a series of longitudinal cut lines for a subsequent job wherein the series of longitudinal cut lines for the first job are not aligned with the series of longitudinal cut lines for the subsequent job, and making a series of longitudinal crease lines on said weblike material, which cut lines include defining a longitudinal trim along each side edge of said weblike material for each of the first job and the subsequent job; and
- when the first job has been finished and the subsequent job is to be begun, changing the position of the cut lines and the crease lines, and producing first auxiliary cuts that are not parallel with the direction of advance of the weblike material along each trim,
- wherein said first auxiliary cuts that are not parallel with the direction of advance of the weblike material connect a trim of the first job with a trim of the subsequent job without severing said trim.
- 15. A method as claimed in claim 14, in which the weblike material is divided by a longitudinal cut line into at least two indefinite strips conveyed onto two separate levels; when the first job has been finished and the subsequent job is to be begun, said longitudinal cut line that divides said two strips is moved sideways; and a line of the first job is connected to a line of the subsequent job by a second auxiliary cut not parallel with the direction of advance of the weblike material.
- 16. A method as claimed in claim 14, in which cutting means are provided to make said series of longitudinal cut lines of the first job and the subsequent job in said weblike material, and auxiliary cutting members are provided to make said first and second auxiliary cuts that are not parallel with the direction of advance of the weblike material.
- 17. The method as claimed in claim 16, in which said auxiliary cutting members are lined up with a respective longitudinal cut line and activated before a job change-over.
- 18. The method as claimed in claim 14, in which said first and second auxiliary cuts that are not parallel with the direction of advance of the weblike material are made by pressurized-water nozzles.
- 19. A system for cutting and creasing an indefinite weblike material, operating on two levels, for processing successive jobs, comprising:
- a first set of creasing tools;
- a second set of creasing tools;
- a first set of cutting tools for dividing said weblike material into a first set of endless strips;
- a second set of cutting tools for dividing said weblike material into a second set of endless strips;
- positioning means for positioning said cutting and creasing tools;
- said first set of cutting tools and said second set of cutting tools each including a pair of cutting tools for generating lateral longitudinal trim cutting lines which generate a longitudinal trim on each side of said weblike material: and
- a first auxiliary cutting member positioned on each side of the weblike material for making cuts not parallel with the direction of advance of the weblike material for trims along edges of the weblike material; and
- at least one second auxiliary cutting means for making a cut not parallel with the direction of advance of the weblike material between two successive longitudinal cut lines at a point where a change of job occurs wherein said at least one second auxiliary cutting means makes a joining cut between two successive longitudinal cut lines that divide the weblike material into two strips conveyed onto two different levels, and wherein each first auxiliary cutting member makes a joining cut between the longitudinal trim cutting lines produced by cutting tools of said first set of cutting tools and the longitudinal trim cutting lines produced by the cutting tools of said second set, without severing the trims transversely where a change of job occurs.
- 20. A system for cutting and creasing an indefinite weblike material for processing successive jobs, comprising:
- a first set of creasing tools;
- a second set of creasing tools;
- a first set of cutting tools for dividing said weblike material into a first set of endless strips;
- a second set of cutting tools for dividing said weblike material into a second set of endless strips;
- positioning means for positioning said cutting and creasing tools;
- said first set of cutting tools and said second set of cutting tools each including a pair of cutting tools for generating lateral longitudinal trim cutting lines which generate a longitudinal trim on each side of said weblike material; and
- a first auxiliary cutting member positioned on each side of the weblike material for making cuts not parallel with the direction of advance of the weblike material for trims along edges of the weblike material;
- wherein each first auxiliary cutting member makes a joining cut between the longitudinal trim cutting lines produced by cutting tools of said first set of cutting tools and the longitudinal trim cutting lines produced by the cutting tools of said second set, without transversely severing the trims and to provide a continuous trim, and wherein suction nozzles for sucking in continuous trims are provided and these nozzles are adjustable transversely with respect to the direction of advance of the weblike material, said first auxiliary cutting members being carried by said suction nozzles and being movable transversely together with said suction nozzles.
- 21. A method for cutting and creasing a weblike material of indefinite length for processing successive jobs, comprising the following stages:
- making a series of longitudinal cut lines for a first job and a series of longitudinal cut lines for a subsequent job wherein the series of longitudinal cut lines for the first job are not aligned with the series of longitudinal cut lines for the subsequent job, and making a series of longitudinal crease lines on said weblike material, which cut lines include defining a longitudinal trim along each side edge of said like weblike material for each of the first job and the subsequent job; and
- when the first job has been finished, and the subsequent job is to be begun, changing the position of the cut lines and the crease lines, and producing first auxiliary cuts that are not parallel with the direction of advance of the weblike material along each trim,
- wherein said first auxiliary cuts that are not parallel with the direction of advance of the weblike material connect a trim of the first job with a trim of the subsequent job without severing said trim and to provide a continuous trim, and wherein suction nozzles for sucking in continuous trims are provided and these nozzles are adjustable transversely with respect to the direction of advance of the weblike material, said first auxiliary cutting members being carried by said suction nozzles and being movable transversely together with said suction nozzles.
Priority Claims (1)
Number |
Date |
Country |
Kind |
FI95A0070 |
Apr 1995 |
ITX |
|
Parent Case Info
This is a continuation of co-pending application Ser. No. 08/631,172 filed on Apr. 12, 1996.
US Referenced Citations (6)
Foreign Referenced Citations (7)
Number |
Date |
Country |
0 458 340 A2 |
May 1991 |
EPX |
0 468 374 B1 |
Jul 1991 |
EPX |
0 534 177 A1 |
Sep 1992 |
EPX |
A-0 607 084 |
Jul 1994 |
EPX |
A-0 692 369 |
Jan 1996 |
EPX |
B-26 56 242 |
|
DEX |
A-19 49 583 |
Apr 1970 |
DEX |
Non-Patent Literature Citations (1)
Entry |
Videotape from Jun. 1994 Paris Trade show as produced by Mitsubishi Heavy Industries (Attachement 2). |
Continuations (1)
|
Number |
Date |
Country |
Parent |
631172 |
Apr 1996 |
|