JPS62157161A - Automatic paper splicing - Google Patents

Abstract

PURPOSE:To make a paper splicing of a web automatic, by setting a paper splicing diameter of an old paper roll by inputting a web thickness and a paper tube diameter and splicing papers automatically when a paper roll traveling speed and the old paper roll diameter coincide with set values in splicing papers in a rotary printing machine and the like. CONSTITUTION:An outside diameter D of a paper tube is measured in advance and the result measured is displayed on a display. In addition, a desired remaining amount x of a paper is set and a web thickness t is inputted in a controller main body so that a paper splicing diameter PC is determined based on the web thickness and the outside diameter D of the paper tube. The web of the paper roll 3 at the portion B is unwound by driving an infeed roller, the r.p.m. of the old paper roll is detected by a pulse generator PG and its line speed V is detected by a tachometer generator TG1, respectively and the diameter of the old paper roll is also calculated. When the diameter Q coincides with the paper splicing diameter PC, a paster roller 5 is swung to the position shown in the portion A and the old paper roll is cut by a cutter 4. After splicing, a turret arm 1 is turned so that the remaining paper at the portion A is removed together with the paper tube.

Description

Detailed Description of the Invention (Technical Field of the Invention) This issue 1 is applicable to rotary printing machines, coaters, laminators, a
This paper relates to a web (paper) splicing method in wl&, etc.

(Technical background of the invention and its problems) When feeding webs at high speed and performing printing, coating, laminator, etc., it is extremely difficult for humans to splice heavy rolls with large diameters with good timing by hand. That's true.

Also, unlike coaters and laminators, where the purpose is almost achieved just by simply connecting the films, in the case of printing systems, in addition to the purpose of continuous good connection, The problem is how to synchronize the speed in a timely manner so as not to upset the heading, that is, how to continue without changing the tension.This is the key to significantly reducing loss and increasing the speed. Become.

Conventionally, the paper splicing diameter is set as a fixed value, and when the old web diameter calculated based on the web traveling speed and the rotational speed of the old web matches the above setting (/j), the automatic!IJ paper splicing operation starts. If the amount of remaining paper is not constant due to variations in the outer diameter of the paper tube around which the web is wound while wrinkling or the thickness of the web being used, and the outer diameter of the paper tube is small, Alternatively, if the web thickness is small, a large amount of paper remains, which goes against resource conservation.

For this reason, at present, automatic paper splicing is not performed, and the paper splicing timing is determined by the operator who determines the paper splicing timing by looking at the warp, and presses a button to splice the paper. I try to do this. Therefore, the amount of remaining paper depends on the operator's experience and intuition and is unstable.

(Purpose of the invention) This invention was made due to the circumstances mentioned above.
An object of the present invention is to provide an automatic paper splicing method capable of automatically splicing webs (Summary of the Invention) This invention relates to an automatic paper splicing method for printing, etc., in which web thickness is input in advance and , calculate and set the paper joint diameter of the old web based on each manual value above, and set it based on the web running speed and the rotation speed of the old web as described in (h). The paper splicing operation is automatically performed when the outer diameter of the old original fabric calculated by the above-mentioned method matches the set value.

(Embodiment of 3i light) FIG. 1 shows a paper jlt part to which this invention can be applied, and both ends of a turret arm 1 (A Parts and Parts B) include:
Raw rolls 2 and 3 wound around paper tubes 2A and 3A are loaded, and new rolls are loaded into section A, and old rolls are unwound from section B. The line speed of the web roll 3 is measured by a tachogenerator TG coupled to the infeed roll, and the rotational speed of the web roll is measured by a pulse generator PG attached to the rotating shaft, b: (The circumferential speed of the anti-roll 2 is measured by the tachogenerator TG2 pressed against it, and each measured value is input to the controller body equipped with a calculation section.The tension of the running web is measured by the tension meter TP+ and iP2, and each is input to the controller body.A cutter 4 for cutting the running web is installed above part A, and a pesta roll 5 swings around @5A. However, it has been sunk.Cutter 4
is operated by a cutter-on signal from the controller main body, and the paper tube 2A (or 3A) that winds the web is
The structure is as shown in the figure.

In such a configuration, its operation will be explained with reference to the flow shown in FIG.

In this invention, first, the outer diameter of the paper tube is measured using a digital caliper as shown in FIG. 4. Steps 81 to S3
), and displays the measurement results on the display (step S4). In this case, two
The number of times υ1 (measured values DI, D2) L, and the average value should be taken as the outer diameter. In this case, if the difference between the two measured values is larger than the predetermined amount β, the abnormal measurement and the same diameter measurement are performed again in step 12, that is, IO+~D2 l≦β
Measure the outside diameter of the paper tube until it reaches the desired diameter (for example, 1 m), and set the desired remaining paper amount X (for example, 10 mm) using the remaining paper amount setting knob provided on the controller body (step Step S5), Enter the web thickness t (pm) using the numeric keypad etc. provided on the controller body. Step 511), calculate the paper joint diameter PC from the outer diameter of the paper tube.
, the margin for guaranteeing operation delay is set as α, and each FXT account is used! +D2 +α (step S6).

The web of the original fabric roll 3 installed in section B is unwound by the drive of the infeed roll, and the rotational speed N of the old original fabric is
is the output of the pulse generator PG, and the line speed V is detected by the output of the tachogenerator τG, which are manually input to the controller body (steps S7 and S8). Then, from the rotation speed N and the line speed V, the old original Reverse diameter Q is Q=
1000 ma/πN (step S9), and it is determined whether or not this old original diameter Q matches the paper joint diameter PC.1 When both match, the pestalol 5 is placed in the stirrup shown in FIG. While swinging, the old original fabric is pressed onto the web roller 2 in section A, and the cutter 4 is driven to cut the old original fabric (step 510). After paper splicing is carried out from the old web to the new web using the pestal roll 5, the pestal roll 5 is returned to its original position, and the turret arm l is rotated around the axis IA to unwind the new web from the section A. Move to part B,
Move the old original fabric that has been cut at the set paper joint diameter pc to section A. after that.

Remove the remaining paper from section A along with the paper core, and install a new web roll.

In the above-mentioned embodiment, the web thickness t can be entered directly using the numeric keypad provided on the controller body, but a yard meter 2 on the infeed roll is used to input the web thickness t.
It is also possible to set 0 so that it is performed automatically.

In other words.

The web thickness t is determined by the following equation from the running length of the web and the change in the winding diameter (nn→On-+) when the web travels that length.

t = (D/n -D'n-+)4Here, 0 is the nth winding diameter detection value, On, l
is the detected value of the winding diameter of (n+1) times 11. J. If the above calculations are performed on the controller body, web I using keys etc.
The input of t can be omitted.

(9, Bright effect) As described above, according to this +51 method, it is possible to set the remaining paper to the desired end value (1) in advance from the paper tube outer diameter and web J, and it is also possible to automatically splice the paper. Web costumes etc.
j th can be done.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of the configuration of a paper splicing section to which the method of the present invention can be applied, FIG. 2 is a flow diagram showing the operation of the present invention, FIG. 3 is a perspective view showing an example of a paper tube, and FIG. FIG. 4 is a diagram showing an example of a digital caliper. ■...Cooler 7 Arm, 2.3...Uniflor, 2A, 3A...Paper tube, 4...Cutter, 5...
Besterol, 6... Prop, 20... Yard meter. Representative Yuzo Angata - ``Continued amendment old (method) April 15, 1985 [1 1985 Patent Application No. 294838 2, name of issue 1 automatic paper suppression method 3, name to be amended' Relationship with case fG Patent applicant: 1-1-1 (289) Dai-1, Ichigaya Kaga-cho, Shinjuku-ku, Tokyo
] Hon Printing Co., Ltd. 4, Agent March 51, 1986” (Delivered [1 March 25, 1986) (1) Details originally attached to the application, I7 engraving, changed to C contents as per attached sheet None) Correct. (2) Amend the drawings originally attached to the f/i document as shown in the attached sheet (no change in content).

Claims (2)

[Claims] (1) Input the web thickness in advance, input the value of the outer diameter of the paper tube, calculate and set the paper joint diameter of the old web based on each input value, and set the running speed of the original web and An automatic paper splicing method in printing, characterized in that a paper splicing operation is automatically performed when the outer diameter of the old original fabric calculated based on the number of rotations matches the set value. (2) The input of the web thickness is automatically performed based on the detected value by detecting the running length of the old web and the change in the outer diameter of the old web corresponding to this running length. An automatic paper splicing method according to claim 1.