JPS60145828A - Method and device for manufacturing corrugated board sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for manufacturing a corrugated pole sheet provided with vertical ruled lines in advance.

[Prior art] A corrugated pole sheet for assembling a box has two horizontal ruled lines for folding the bottom flap of the box and four vertical ruled lines for folding the four sides and adhesive allowance of the box. I can ask you. The two horizontal ruled lines parallel to the direction in which the corrugations of the middle tier of corrugated pole paper are lined up are usually provided by a slitter Φ scorer in the processing process that follows the corrugated pole paper sheet manufacturing process, but Japanese Patent Laid-Open No. 57-131
It may also be applied by a slitter φ scorer placed before a cutting machine in the corrugated pole sheet manufacturing process as disclosed in No. 540. However, until now, the four vertical ruled lines that fold the side surfaces have been provided by a creaser during the processing process following the corrugated pole sheet manufacturing process. When processing vertical ruled lines, the liner paper of the sheet is subjected to tension in a direction perpendicular to the vertical ruled lines, but as disclosed in Japanese Patent Application Laid-Open No. 57-57644, conventional creasers are capable of processing four vertical ruled lines at once. There was a problem in that the liner paper could not withstand processing and was damaged due to excessive tension acting on the sheet. In order to prevent liner paper from being damaged by this creaser, liner paper of a paper quality stronger than that required for boxes has been used up until now, but liner paper of a durable paper quality is relatively expensive, and the cost of boxes has been reduced. I made it higher than necessary.

[Object of the Invention] The object of the present invention is to provide a method for manufacturing a corrugated pole sheet in which four vertical ruled lines for folding the sides of a box are added to the sheet without applying excessive tension to the liner paper during the manufacture of the corrugated pole sheet. The goal is to provide equipment.

[Structure of the Invention] In order to achieve the above object, the method of the present invention is characterized by a step of forming a continuous corrugated pole paper by laminating a corrugated middle paper and a liner paper, and a step of forming the continuous corrugated pole paper to a predetermined length. A vertical ruled line processing step is provided between the step of cutting into sheets and the step of inserting four vertical ruled lines perpendicular to the direction in which the corrugations of the middle paper are lined up, one by one. A feature of the apparatus for carrying out this method is a creaser disposed on the supply side of a cutting machine that cuts continuous corrugated paper into predetermined lengths, and the creaser is equipped with one to four pairs of processing rolls. has four or four sets of vertical ruled line pieces, and these four or four sets of vertical ruled line pieces are arranged so that only one or - sets of vertical ruled line pieces act on the corrugated paper at a time. A slitter scorer is installed before and after the creaser to cut both sides of the corrugated pole paper and add two horizontal ruled lines to the corrugated pole paper that extend in the direction in which the waveforms of the middle row of paper are arranged. It is desirable to produce a corrugated pole sheet that is

[Example] The method and apparatus of the present invention will be explained based on the example shown in the drawings. As shown in Figure 1, continuous pole paper forming machine IO
The corrugated pole paper 18 is continuously manufactured from the middle tier paper 12 and the front and back liner papers 14 and 16. The middle paper 12 is wound onto the reel 22 of the middle paper stand 20 and guided via a guide roll 24 to a pair of toothed rolls 26,28. A pair of toothed rolls 26 and 28 are driven to rotate at a constant speed, and bend the middle sheet 12 inserted between them into a wave shape. There is one roll 30 on the outside of the toothed roll 28, and the middle paper 12
Apply glue to the corrugated convex part on one side. The front liner paper 14 is also wound on the reel 34 of the stand 32 and the calendar roll 36
It is extracted by

The drawn out front liner paper 14 is superimposed on the corrugated convex portion of the middle paper 12 on the pasted side and advances together.

The bonded front liner paper 14 and middle paper 12 rotate around a plurality of guide rolls 38. In another method of applying glue, glue is applied to the corrugated convex portion on the opposite side of the middle sheet 12 by the roll 4o. The back liner paper 16 is wound on a reel 44 of a stand 42 and pulled out by a calendar roll 48 via a guide roll 46. The drawn-out back liner paper 1B is aligned with the just-applied corrugated convex portions of the middle paper 12 to form a continuous paper pole paper 18. The continuous corrugated pole paper 18 is passed through the slitter φ scorer 5o, and as shown in FIG. 2, two horizontal ruled lines A and B parallel to the supply direction of the arrow are formed and both edges are cut. . The steps and equipment up to this point are exactly the same as the conventional ones, and the distance between the two horizontal ruled lines is equivalent to the height of the corrugated pole box to be formed.

The continuous pole paper 18 then enters the creaser 8o.

The creaser 60 includes four pairs of upper and lower processing rolls 61 and 62, and as shown in FIG. 3, one vertical tracing piece 63 extending in the axial direction is fixed to each upper processing roll 61.

A synthetic rubber tip 64 with a smooth circumferential surface is fitted onto each of the lower processing rolls θ2. Each vertical ruled line piece 63 compresses the corrugated paper 18 passing between the upper and lower processing rolls 61.82 to form a single vertical ruled line perpendicular to the direction of movement of the corrugated paper 18. As shown in FIG. 2, four vertical lines C1D, E, and F are repeatedly applied to the corrugated paperboard 18 by four pairs of processing rolls 61 and 62. Horizontal ruled lines A, B and vertical ruled lines C, D, E
, F are perpendicular to each other, the horizontal ruled lines A and B match the direction in which the waveforms of the middle tier paper are lined up, and the vertical ruled lines are perpendicular to the direction in which the waveforms are lined up on the middle tier paper. Figure 2 shows vertical ruled line piece 6 of the first processing roll from the left.
Although only three pieces are not shown, one vertical ruled line piece is provided on each of the circumferences of the four upper processing rolls 61. The mutual positions of the four vertical ruled line pieces 63 on the circumference of the processing roll are adjusted so that the mutual distances between the vertical ruled lines C, D, E, and F provided on the corrugated pole paper 18 are at predetermined intervals. In addition, the four vertical ruled line pieces 63 are set so as not to act on the corrugated paper 18 at the same time. Vertical ruled line C,
The mutual spacing between D, E, and F corresponds to the width of one side of the box to be assembled later, including the three sides and the adhesive allowance.

The continuous corrugated paper 18 with all the ruled lines A, B, C, D, E, and F is finally cut into sheets 80 of a constant length by the cutting machine 70 shown in FIG. Since the cutting is done on the sides that include the adhesive allowance, the sheet 80 has all the ruled lines A, B, and C necessary for assembling the box, as shown in FIG.
, D, E, and F are given.

In the embodiment shown in FIG. 1, the creaser 60 is the slitter scorer 5
Although the creaser 60 is disposed between the slitter/scorer 50 and the cutting machine 70, the creaser 60 may be disposed as a preceding step of the slitter/scorer 50, as shown in FIG. When two or more vertical ruled line pieces 63 are attached to one processing roll 61 on the upper side of the creaser 60, the number of processing rolls 81, 62 becomes three or less pairs. For example, as shown in FIG. 5, if two vertical ruled line pieces 63 are provided on a wooden processing roll, there will be two pairs of processing rolls 81 and 62.

Furthermore, although not shown, four vertical ruled line pieces may be provided on a wooden processing roll to form a pair of processing rolls. As shown in FIG. 6, not only the vertical ruling line pieces 63 are provided on the upper processing roll 61, but also the vertical ruling line pieces 65 are provided on the lower processing roll 62, and the upper and lower ruling line pieces 63, 65 are shaped like a U-shape or They may also mesh in a W-shape.

[Effects of the Invention] As mentioned above, since the vertical ruled lines are visible from the beginning in the corrugated pole sheet manufactured by the method of the present invention, there is no need to provide a creaser in the processing process of the corrugated pole sheet. Nor. In addition, the four vertical creases that form a box are not processed at the same time, but are inserted one by one at different times. Because the tensile stresses that occur in the liner paper during processing are relatively small, failure of the liner paper does not occur unless the entire culm is involved.

Furthermore, the paper quality of the liner paper is determined only by the strength required for the box, and there is no need to use strong and expensive liner paper to withstand creaser processing as in the past, reducing the cost of corrugated paper boxes. A special effect that cannot be obtained with conventional methods and devices is produced.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a corrugated pole sheet manufacturing apparatus that implements the method of the present invention, and FIG. 2 is a schematic diagram showing the state of ruled line processing of corrugated pole paper in the apparatus of FIG. 1. Figure 3 is a side view of a pair of creaser rolls. FIG. 4 is a plan view of the manufactured corrugated pole sheet, a partially cutaway plan view showing the corrugation of the middle sheet, and FIG. 5 is a schematic diagram showing the slitter/scorer and creaser of another embodiment.
FIG. 6 is a side view of essential parts of a processing roll according to another embodiment. In the figure, IO is a continuous pole paper forming machine, 12 is a middle paper, 14.16 is a liner paper, and 18 is a continuous pole paper. 50 is a slitter/scorer, 80 is a creaser, 61 is an upper processing roll, 62 is a lower processing roll, 63.65 is a vertical ruling piece, 70 is a cutting machine, and 80 is a corrugated pole sheet. Applicant Yoshi Matsuo - Department agent Hajime Kawakami (2 others)

Claims (1)

[Claims] l) A step of forming a continuous corrugated pole paper by processing the middle corrugated paper into a corrugated shape and pasting liner paper on the front and back sides of the corrugated paper, and sequentially cutting the continuous corrugated pole paper into sheets of a predetermined length. [Cutting]: In a method for producing a corrugated pole sheet, which comprises step and step, between the forming step and the cutting step, vertical ruled lines are added to the corrugated pole paper one by one to separate the sides of four boxes perpendicular to the direction of travel of the corrugated pole sheet. A method for producing a corrugated pole sheet characterized by the addition of a step of forming vertical ruled lines at different times. 2) A patent characterized in that the process of ``horizontal ruled line processing'' in which continuous horizontal ruled lines are added to continuous corrugated paperboard to separate the upper and lower flaps of two boxes along the direction of travel before or after the vertical ruled line processing step is added. A method for manufacturing a corrugated pole sheet according to claim 1. 3) A tier equipped with a continuous tiered pole paper shape J& machine that processes middle tiered paper into a corrugated shape and laminates liner paper on the front and back sides of the paper, and a cutting machine that cuts the continuous tiered pole paper into sheets of a predetermined length. In the pole sheet manufacturing apparatus, a creaser is disposed between the forming machine and the cutting machine, and a creaser is provided for forming vertical ruled lines on the continuous corrugated pole paper to separate the sides of four boxes perpendicular to the direction of travel thereof, and the creaser is arranged between the forming machine and the cutting machine. has at least a pair of upper and lower processing rolls,
It consists of four vertical ruled line pieces attached to the circumference of the processing roll and extending in the axial direction, and the vertical ruled line pieces are set to act on the corrugated pole paper one by one at a time difference. Features: Corrugated pole sheet manufacturing equipment. 4) The corrugated pole sheet according to claim 3, wherein the creaser is equipped with four pairs of upper and lower processing rolls, and one or a set of vertical ruling pieces are attached to each pair of processing rolls. Manufacturing equipment.