Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H23/00—Registering, tensioning, smoothing or guiding webs
  • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
  • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
  • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
  • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/02—Conveying or guiding webs through presses or machines

Definitions

• the present invention relates to a method and an apparatus for controlling the tension of a web in a rotary printing press handling a plurality of webs.
• the web may be meandered if the tension is too low, and wrinkled and cut off if the tension is too high.
• the tension value of the tube must be adjusted within the proper range.
• Fig. 4 The outline of the tension control device of a conventional rotary printing press is described with reference to Fig. 4, where 1 is a plurality of reel stands, and each reel stand is the same.
• the web 2 attached to the stand 1 passes through the feed roller 11 and the dancer roller 10 to reach the stencil unit 3, and This is where the seal is imposed. Furthermore, it passes through the guide roller 4 and the intermediate drag roller 5 to reach the drag roller 6 installed above the triangular plate, where it is a triangular plate driver. After being held down by the roller 7 and sent to the triangular plate 8, it is conveyed to the nibbling roller 9, where it is cut and then cut. It is discharged outside.
• an appropriate load is applied to the dancer roller 10 at the entrance via the load device 12, and the triangular plate drag holding roller at the exit is provided.
• La 7 An appropriate pressing force is applied to the nibbling roller 9 via the pressing devices 13 and 14, respectively, and these load devices 1 2 By operating the pressing device 1 3 1 4, the tension of the web 2 is controlled.
• the load control device 12 and the pressing devices 13 and 14 are operated by the tension control device of the A- bub, and the dancer roller 10 and the triangle are controlled.
• the tension of each tube 2 is controlled via the drag retainer roller 7 and the bibbing roller 9, but all the ⁇ systems in each printing unit 3 are controlled.
• the method for adjusting the tension of the pipe 2 to an appropriate tension is not known, and a skilled operator is required to carry out a load test 12 and a pressing device 13, based on the test. At present, 14 is operated manually. For this reason, automation is desired.
• the present invention has been made to satisfy the above-mentioned requirements, and has as its object the purpose of an improved rotary printing capable of automatically controlling the tension of each valve to an appropriate value. It is an object of the present invention to provide a method and a device for controlling the tension of a tube on a machine.
• the present invention for achieving the above object is to provide a method of outputting the tension of each of the tubes reaching the outlet from the entrance of the rotary printing press via each printing means. Detected at the mouth, the predetermined tension of the web at the entrance of each printing means is calculated based on the detected value obtained at that time, and based on the calculation result, the printing means of each printing means is calculated. A method and an apparatus for adjusting the tension of the tube at the entrance so as to constantly adjust the tension of each tube in front of the triangular plate. In addition, the magnitude of the tension applied to all the webs is adjusted by pressing means.
• the tension of each of the webs in front of the triangular plate is detected by a detecting means, and the printing of each of the webs necessary to make the detected values constant from the detected values is performed.
• the above-mentioned predetermined tension is calculated by calculation means, and the tension before imprinting of each of the webs is adjusted by tension adjustment means for each of the webs according to the above-mentioned performance value.
• the method for controlling the tension of a web of a rotary printing press according to the second invention is the same as that of the first invention, except that the method further comprises a means for controlling the pressing force on the overlapped web. It is characterized in that a set pressing force is applied by pressing means.
• the tension control device for the web of the rotary printing press according to the third invention corresponds to each web sent from a plurality of paper feed units.
• the printing is performed by an installed printing means, and the above-described respective tubes are stacked, folded by a triangular plate, and sent to the next process.
• the first detection for detecting the tension of each of the above-mentioned tubes before printing.
• Means a second detecting means for detecting the tension of each web before the triangular plate, a tension adjusting means for adjusting the tension of each web before printing, and a second detecting means.
• a calculating means for exerting a predetermined tension before printing necessary for the detection signal value to become constant, a calculation output signal of the calculating means, and detection of the first detecting means by the detection signal; The signal is compared, and the control means controls the tension adjusting means so that the detected signal value becomes equal to the calculated signal value.
• the tension control device for a web of a rotary printing press according to a fourth invention is the same as the third invention, wherein the tension control device further applies a pressing force to the overlapped web. And a pressing force control means for controlling a pressing force of the pressing means to a set value.
• FIG. 1 is a system diagram showing an example of a method for controlling the tension of a web in a rotary printing press according to the present invention and a tension control device used for carrying out the device
• FIG. Action theory FIG. 3 is an explanatory diagram of the operation of the tension control device
• FIG. 4 is a system diagram showing a tension control device of a web in a conventional rotary printing press.
• 1 is a plurality of reel stands, and each of the reel stands 1 mounted on the reel stand 1 is connected to an infeed roller 1.
• the print unit 3 reaches the print unit 3 via the dancer 10 and is printed. Further, the guide roller 4 and the middle drag roller 5 are put through to reach the drag roller 6 provided above the triangular plate, where the triangular plate door is placed. It is held down by the lug holding roller 7 and sent to the triangle No. 8. After that, the sheet is transported to the nibbling roller 9 and then cut and discharged out of the machine.
• FIG. 1 shows a case where there are three reel stands 1, but the number is not limited to three.
• 15 is a tension detecting device
• 16 is a computing device
• 17 and 18 are pressing force control devices
• 19 is a load force control device
• intermediate drag rollers 5 and 3 are provided.
• a tension detector 15 detects the tension between the square 2 and the drag roller 6 with the tension detector 15, and a detection signal obtained at that time is detected by the tension detector 16.
• the load signal of the dancer roller 10 is sent to the arithmetic unit 16, and the arithmetic unit 16 performs the operation described below from these signals.
• the load force of the load device 12 is adjusted via the food force control device 19, and the press force of the press force 13 and 14 is adjusted via the press force control devices 17 and 18. ing .
• 3 figure 1 is Li Lumpur scan data down de ', 1 *, 1 in the case of good jar to 3 Go of m, vinegar ⁇ We blanking 2 in middle-de-la-grayed Russia over La 5 Li Tsu It shows the case when it does not work.
• the reference web 2 (in this case, the web 2 from the reel stand 1 w ) passed through the print unit 3 copies JS 3 ⁇ 4 3 ⁇ 4r V0 (ca / s) and the other web 2 (in this case, the belt 2 from reel stand 1'1 *) through the stamping unit 3 at V0 (1 + oi) (ca / s), the speed of the drag roller on the triangular plate of all the tubes 2, the passing speed of 6 parts of the drag roller 3 ⁇ 4r V ca / s), the mark of the reference tube 2 E. Distortion before unit 3.
• V (1-8 3 ) ⁇ 0 (1- ⁇ ⁇ ) 1
• the equation shows that the variation of the peripheral speed of the printing unit 3 passing through each of the tubes 2 can be calculated from the tension value.
• F is the pressing force (kg) of the triangular plate drag holding roller 7 and the nibbling roller 9. Accordingly, the absolute value of the tension in front of the triangular plate 8 can be adjusted by changing the attachment force F.
• the web tension control method and apparatus in the web offset printing press according to the present invention adjust the web tension in each part of the web offset printing press within an appropriate range. This is useful in cases where

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)
• Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
• Collation Of Sheets And Webs (AREA)
• Rotary Presses (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=15855699

Family Applications (1)

Country Status (3)

Cited By (4)

Families Citing this family (7)

Citations (3)

Family Cites Families (5)

• 1984
  • 1984-08-13 JP JP16776684A patent/JPS6147262A/ja active Granted
• 1985
  • 1985-08-13 DE DE3590386A patent/DE3590386C2/de not_active Expired - Fee Related
  • 1985-08-13 WO PCT/JP1985/000450 patent/WO1986001155A1/ja active Application Filing
  • 1985-08-13 DE DE19853590386 patent/DE3590386T/de active Pending

Patent Citations (3)

Non-Patent Citations (1)

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