JP2021073125A - Method of producing continuous corrugated board sheet and corrugated board sheet production apparatus - Google Patents

Abstract

To provide means, in producing a corrugated board carton on demand, to eliminate paper picking-up work and shorten time required to replenish a corrugated board sheet that becomes a base material.SOLUTION: There is provided a method of producing a continuous corrugated board sheet C using a corrugated board sheet bonding apparatus 200, comprising: transport means 220 that transports a corrugated board sheet S in a direction parallel to one side of the corrugated board sheet S; and bonding means 230 that bonds respective end edges facing each other of two corrugated board sheets S that are transported back-to-back by the transport means 220. in which in a front end and a rear end of the respective corrugated board sheets S, a glue-pasting part where one liner, or one liner and one corrugated plate are missing in two liners and one corrugated plate both of which forms the corrugated sheet is provided in advance, and in the bonding means 230, the glue-pasting part provided in the rear end of a front side corrugated board sheet and the glue-pasting part provided in the front end of a rear side corrugated board sheet are overlapped and bonded.SELECTED DRAWING: Figure 7

Description

The present invention relates to an apparatus for producing a continuous corrugated cardboard sheet, which is a material for producing a large number of corrugated cardboard boxes by joining corrugated cardboard sheets.

Corrugated cardboard boxes are made by assembling blanks (corrugated cardboard blanks) cut out from corrugated cardboard sheets, which are packaging materials. There is. Corrugated cardboard blanks are usually manufactured by cutting out one by one from a plate-shaped corrugated cardboard sheet and making slits or ruled lines at necessary places. When manufacturing a standard corrugated cardboard blank, it is possible to cut out a fixed length and slit / ruled lines at a fixed location continuously and at high speed, so that a large amount of corrugated cardboard blank can be manufactured at low cost. ..

However, in recent years, there has been an increasing demand for so-called on-demand corrugated cardboard box manufacturing, in which corrugated cardboard boxes are individually manufactured in response to various items to be packed. In such a case, if corrugated cardboard boxes having various developed shapes are manufactured from a plate-shaped corrugated cardboard sheet of a certain size, there is a lot of waste in cutting out.

Therefore, a device has been proposed in which a long corrugated cardboard sheet is manufactured and stored in advance, pulled out by a required length when necessary, and a blank sheet corresponding to a corrugated cardboard box of a desired size is cut out (for example). , Patent Document 1). This cardboard blank manufacturing device includes a transport device that pulls out and transports a stocked long cardboard sheet little by little, a cross-cutting device that makes a cut in a direction orthogonal to the transport direction, and a cut along the transport direction. It is equipped with a vertical cutting device, and the vertical cutting device can move in the width direction (direction orthogonal to the transport direction). The long corrugated cardboard sheet pulled out from the stock is first cut to the required length by the cross-cutting device, and further cut into appropriate places by the cross-cutting device and the vertical cutting device to obtain the required shape and shape. A sized corrugated blank is made.

In such on-demand corrugated cardboard box manufacturing, if the long cardboard sheet used as a material is single-sided corrugated cardboard, it can be rolled up and stocked. However, in the case of double-sided corrugated cardboard, which is usually used as a material for corrugated cardboard boxes, it is difficult to wind it into a roll. Therefore, it has been proposed to stock a long double-sided corrugated cardboard manufactured in advance in a bellows-like shape and use it for the above-mentioned on-demand corrugated cardboard box manufacturing (for example, Non-Patent Document 1). See). By folding in a bellows shape in this way, both double-sided corrugated cardboard and single-sided corrugated cardboard can be stored as a long corrugated cardboard sheet.

International Publication No. WO2014 / 119439

BOX ON DEMAND MACHINE, Panotec S.R.L, [Search June 1, 2017], Internet <URL: http://www.boxondemand.it/en/box-on-demand-machines/>

However, in the above-mentioned on-demand corrugated cardboard box manufacturing, regardless of whether a long corrugated cardboard sheet is rolled up or folded into a bellows shape as a material, one long corrugated cardboard sheet is used. The corrugated cardboard blanks are sequentially cut out from the front end side of the corrugated cardboard sheet, and when the length of the remaining corrugated cardboard sheet is less than the length required for the desired corrugated cardboard blank, the remaining corrugated cardboard sheet is discarded, which is a small amount. However, paper is wasted. In addition, when one long corrugated cardboard sheet is used up, it is necessary to replenish the transport device with a new roll-shaped or bellows-shaped long corrugated cardboard sheet. It is necessary to temporarily stop the entire corrugated board blank manufacturing apparatus including the above-mentioned cross-cutting device and vertical cutting device, which causes a decrease in production efficiency.

The present invention has been made in view of the above points, and an object of the present invention is to eliminate waste of paper removal and to replenish a corrugated cardboard sheet as a material in manufacturing a corrugated cardboard box on demand. The purpose is to save time.

The corrugated cardboard sheet joining device according to the present invention made to solve the above problems is
a) A transport means for transporting the corrugated cardboard sheet in a direction parallel to one side of the corrugated cardboard sheet, and
b) A joining means for joining the opposing edges of two corrugated cardboard sheets transported back and forth by the conveying means, and a joining means.
It is characterized by having.

The joining means may be, for example, joining the two corrugated cardboard sheets with an adhesive, or joining with a fastener such as a stapler or a stud.

According to the corrugated cardboard sheet joining means according to the present invention, a plurality of corrugated cardboard sheets can be automatically joined to form a continuous corrugated cardboard sheet without a break.
Therefore, by arranging the corrugated board sheet joining device according to the present invention in front of the vertical cutting device and the crossing device in the above-mentioned corrugated cardboard blank manufacturing device, the corrugated board sheet is cut with respect to the vertical cutting device and the crossing device. It is possible to supply continuously without any. As a result, waste of paper removal is eliminated, and it is not necessary to temporarily stop the device for replenishing the corrugated cardboard sheet, so that the production efficiency of the corrugated cardboard blank can be improved.

Each corrugated cardboard sheet joined by the corrugated cardboard sheet joining device according to the present invention may be a single-wafered corrugated cardboard sheet, that is, a plate-shaped corrugated cardboard sheet without folding or bending, and has a length folded in a bellows shape. It may be a long corrugated cardboard sheet or a long corrugated cardboard sheet wound in a roll shape.

That is, the corrugated cardboard sheet joining device according to the present invention is
It may have a paper feeding means for supplying the stacked sheet-shaped corrugated cardboard sheets one by one to the conveying means.
It may have a paper feeding means for pulling out one end of the corrugated cardboard sheet folded in a bellows shape and supplying it to the conveying means.
Alternatively, it may have a paper feeding means that pulls out one end of the corrugated cardboard sheet wound in a roll shape and supplies it to the conveying means.

Further, the corrugated cardboard sheet joining device according to the present invention further
A folding rule-giving means for imparting a folding rule to the corrugated cardboard sheet joined by the joining means at regular intervals, which is orthogonal to the transport direction by the transport means.
It is desirable to have.

This makes it possible to fold the continuous corrugated cardboard sheet obtained by joining a plurality of corrugated cardboard sheets into a bellows shape.

Further, when a continuous corrugated cardboard sheet is manufactured by using the corrugated cardboard sheet joining device according to the present invention, there is a large difference in thickness between the jointed portion and other regions in the continuous corrugated board sheet obtained by joining a plurality of corrugated cardboard sheets. It is desirable to prevent the occurrence of.

Therefore, the method for manufacturing a continuous corrugated cardboard sheet according to the present invention is a method for manufacturing a continuous corrugated cardboard sheet by joining a plurality of corrugated cardboard sheets by the corrugated cardboard sheet joining device according to the present invention.
A glue margin portion is formed by crushing the front end and the rear end of each corrugated cardboard sheet conveyed by the conveying means in advance in the thickness direction.
In the joining means, the glue margin portion provided at the rear end of the front corrugated cardboard sheet of the two corrugated cardboard sheets and the glue margin portion provided at the front end of the rear corrugated cardboard sheet are overlapped with each other. It is characterized by joining with corrugated cardboard.

Alternatively, the method for manufacturing a continuous corrugated cardboard sheet according to the present invention is a method for manufacturing a continuous corrugated cardboard sheet by joining a plurality of corrugated cardboard sheets by the corrugated cardboard sheet joining device according to the present invention.
One liner or one liner and corrugated sheet of the two liners and one corrugated sheet constituting the corrugated cardboard sheet were chipped at the front end and the rear end of each corrugated cardboard sheet conveyed by the conveying means. A glue margin is provided in advance,
In the joining means, the glue margin portion provided at the rear end of the front corrugated cardboard sheet of the two corrugated cardboard sheets and the glue margin portion provided at the front end of the rear corrugated cardboard sheet are overlapped with each other. It is characterized by joining with corrugated cardboard.

The continuous corrugated cardboard sheet according to the present invention
It is composed of a plurality of corrugated cardboard sheets arranged in a row and joined by overlapping the edges of each other, and each of the corrugated cardboard sheets is crushed in the thickness direction at the edges. ..

Further, the continuous corrugated cardboard sheet according to the present invention is
It is composed of a plurality of corrugated cardboard sheets arranged in a row and joined by overlapping the edges of each other, and each of the plurality of corrugated cardboard sheets forms two liners at the edge of the corrugated cardboard. And one corrugated board, one liner or one liner and a region where the corrugated board is missing are provided.

Further, the corrugated cardboard blank manufacturing apparatus according to the present invention is
a) The corrugated cardboard sheet joining device according to the present invention and
b) A continuous corrugated board sheet transporting means for transporting the continuous corrugated board sheet produced by the corrugated cardboard sheet joining device, and
c) A blank cutting means for cutting out a corrugated cardboard blank from the continuous corrugated board sheet by making a cut in the continuous corrugated board sheet along a direction parallel to and orthogonal to the transport direction by the transport means.
It is characterized by having.

As described above, according to the corrugated cardboard sheet joining device according to the present invention, in the on-demand production of a corrugated cardboard box, waste of paper removal is eliminated and the time required for replenishing the corrugated cardboard sheet as a material is shortened. Can be done.

It is a schematic block diagram of the corrugated cardboard sheet joining apparatus by 1st Embodiment of this invention, (a) is a side sectional view, (b) is a plan view. The plan view which shows another arrangement example of the paper feed preparation part in the corrugated cardboard sheet joining apparatus. The plan view which shows the further arrangement example of the paper feed preparation part in the corrugated cardboard sheet joining apparatus. FIG. 3 is a cross-sectional view of a corrugated cardboard sheet joined by the corrugated cardboard sheet joining device according to the same embodiment. The figure explaining the joining method of the corrugated cardboard sheet. The side view which shows the said corrugated cardboard sheet which was joined. It is a schematic block diagram of the corrugated cardboard blank manufacturing apparatus according to 2nd Embodiment of this invention, (a) is a side sectional view, (b) is a plan view. The side view which shows the structure of the fold rule addition part in the same embodiment. The figure which shows the state of pressing the corrugated cardboard sheet by the squeeze-adding part. The figure which shows the corrugated cardboard sheet which the crease was given by the squeeze part. FIG. 5 is a cross-sectional view showing another first example of a corrugated cardboard sheet joined by the corrugated cardboard sheet joining device according to the present invention. The figure explaining the joining method of the corrugated cardboard sheet. The side view which shows the said corrugated cardboard sheet which was joined. The perspective view which shows another 2nd example of the corrugated cardboard sheet bonded by the corrugated cardboard sheet joining apparatus which concerns on this invention. The side view explaining the method of joining a corrugated cardboard sheet. The side view which shows the said corrugated cardboard sheet which was joined. FIG. 16 is a cross-sectional view taken along the line AA of FIG. FIG. 14 is a schematic configuration diagram showing a corrugated cardboard sheet manufacturing apparatus for manufacturing a corrugated cardboard sheet as shown in FIG. 14, in which (a) is a side view and (b) is a plan view. Schematic diagram of a corrugated cardboard sheet joining device when a bellows-shaped long corrugated cardboard sheet is used as a material. Schematic diagram of a corrugated cardboard sheet joining device when a long roll corrugated cardboard sheet is used as a material. FIG. 5 is a cross-sectional view showing another third example of a corrugated cardboard sheet joined by the corrugated cardboard sheet joining device according to the present invention. The figure explaining the joining method of the corrugated cardboard sheet. The side view which shows the said corrugated cardboard sheet which was joined. The exploded perspective view which shows another 4th example of the corrugated cardboard sheet joined by the corrugated cardboard sheet joining apparatus which concerns on this invention. The perspective view of the corrugated cardboard sheet.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

<Embodiment 1>
FIG. 1 is a schematic configuration diagram of a corrugated cardboard sheet joining device 100 according to the first embodiment of the present invention. The corrugated cardboard sheet joining device 100 according to the present embodiment generates a continuous corrugated cardboard sheet C by joining a sheet-fed corrugated cardboard sheet S, and the paper feeding section 110, the conveying section 120, the joining section 130, and these are joined together. A control unit 140 for controlling and a control panel 150 for a user to input various settings to the control unit 140 are provided. In the following, the front, back, left and right are defined with the transport direction of the corrugated cardboard sheet S, that is, the direction pointed by the white arrow in FIG. 1A as the front. Further, in the sheet-fed corrugated cardboard sheet S and the continuous corrugated cardboard sheet C, the direction parallel to the transport direction is called the length direction, and the direction orthogonal to the transport direction is called the width direction.

The paper feeding unit 110 includes a sheet accommodating unit 111 capable of stacking and accommodating a plurality of sheet-fed corrugated cardboard sheets S having a constant shape, and the inner bottom surface 112a of the sheet accommodating unit 111 includes a motor and the like (not shown). It is configured to be movable up and down by the bottom drive mechanism 112. The paper feeding unit 110 further includes a kicker 113 for pushing out the top one of the plurality of corrugated cardboard sheets S stacked in the sheet accommodating unit 111 toward the right in the drawing. Each time the top corrugated cardboard sheet S is pushed out by the kicker 113, the bottom surface driving mechanism 112 raises the inner bottom surface 112a of the sheet accommodating portion 111 by the thickness of the corrugated cardboard sheet S. Further, as shown in FIG. 1B, there are paper feed preparation units 114 and 115 on the left and right sides of the sheet accommodating unit 111, respectively, in which the stock of the corrugated cardboard sheet S is arranged, and the corrugated cardboard sheets in the sheet accommodating unit 111. When S disappears, the corrugated cardboard sheet S is supplied to the sheet accommodating unit 111 from any one of the paper feed preparation units 114 and 115.

Note that FIG. 1B shows a configuration in which the paper feed preparation units 114 and 115 are arranged on the left and right sides of the sheet accommodating unit 111, but the present invention is not limited to this, and only one of the left and right side of the sheet accommodating unit 111 is supplied. It is also possible to have a configuration in which the paper preparation unit 114 is arranged (FIG. 2) or a configuration in which the paper feed preparation unit 114 is arranged behind the sheet accommodating unit 111 (the same applies to the second embodiment described later).

Each corrugated cardboard sheet S accommodated in the paper feeding unit 110 has a width of a predetermined length region of a front end and a rear end (that is, an end located on the front side and an end located on the rear side during transportation) in advance. By crushing over the entire direction, it is compressed to about half the original thickness. At this time, as shown in FIG. 4, the front end (right end in the figure) of the corrugated cardboard sheet S is compressed upward on the lower surface side, and the rear end (left end in the figure) is downward on the upper surface side. Compress. Hereinafter, the crushed regions of the front end and the rear end of each corrugated cardboard sheet S are referred to as glue margin portions Sa and Sb, and the other regions are referred to as main body portions Sc. By performing the above compression, the upper surface of the glue margin Sa at the front end of each corrugated cardboard sheet S is flush with the main body Sc, and the lower surface of the glue margin Sb at the rear end is flush with the main body Sc. It becomes.

The transport unit 120 includes a plurality of transport rollers 121 forming a transport path for the corrugated cardboard sheet S and a motor (not shown) for driving them, and the corrugated cardboard sheets are extruded one by one from the sheet accommodating portion 111 by the kicker 113. S is sequentially conveyed on these transfer rollers 121.

The joint portion 130 includes a paper edge detection portion 131, an adhesive coating portion 132, and a crimping portion 133. The paper edge detection unit 131, the adhesive application unit 132, and the crimping unit 133 straddle the support bases 131b, 132b, 133b and the left and right support bases 131b, 132b, 133b, respectively, which are arranged on the left and right sides of the transport path. It includes the frames 131c, 132c, and 133c that are hung. The paper edge detection unit 131 further includes a sensor 131a such as an infrared sensor attached to the frame 131c, detects the front end and the rear end of each corrugated cardboard sheet S moving in the transport path, and detects a detection signal in the control unit 140. Send to. The adhesive coating unit 132 includes a spray nozzle 132a attached to the frame 132c, and under the control of the control unit 140, covers the entire width direction of the corrugated cardboard sheet S at the timing when the rear end of each corrugated cardboard sheet S passes. The adhesive is applied to the upper surface of the glue margin portion Sb at the rear end of each corrugated cardboard sheet S by spraying the adhesive over.

As shown in FIG. 1A, between the transport path on the upstream side and the transport path on the downstream side of the predetermined point downstream of the adhesive coating portion 132, the transport path on the downstream side is the corrugated cardboard sheet S. The surface on which the is placed (that is, the upper end position of the transport roller 121) is slightly lower. Therefore, when the entire corrugated cardboard sheet S that has passed through the adhesive coating section 132 gets on the downstream transport path, only the downstream transport path is temporarily stopped, so that the adhesive coating section is then used. The glue margin portion Sa at the front end of the corrugated cardboard sheet S that has passed through 132 can be superposed on the glue margin portion Sb at the rear end of the corrugated cardboard sheet S that is stopped on the transport path on the downstream side (FIG. 5). Then, in this state, by operating the transport path on the downstream side again, the two corrugated cardboard sheets S in a state where the front end and the rear end overlap are introduced into the crimping portion 133.

The crimping portion 133 includes a crimping roller 133a attached to the frame 133c and arranged above the transport roller 121, and the distance between the transport roller 121 and the crimping roller 133a in the crimping portion 133 is substantially equal to the thickness of the corrugated cardboard sheet S. It has become. The corrugated cardboard sheet S introduced into the crimping portion 133 passes between the transport roller 121 and the crimping roller 133a, and in the process, the corrugated cardboard sheet S located at the rear end and the upstream side of the corrugated cardboard sheet S located on the downstream side. The overlapping portion with the front end of the corrugated cardboard is pressed in the thickness direction to ensure adhesion (FIG. 6).

<Embodiment 2>
Subsequently, the corrugated cardboard blank manufacturing apparatus according to the second embodiment of the present invention will be described with reference to FIG. 7. The corrugated cardboard blank manufacturing apparatus according to the present embodiment includes a corrugated cardboard sheet joining device 200 that joins a plurality of sheet-fed corrugated cardboard sheets S to create a continuous corrugated board sheet C, and a corrugated cardboard blank B cut out from the continuous corrugated board sheet C. A blank cutting device 400 for performing the above, a control unit 540 for controlling these, a control panel 550 for the user to input various settings to the control unit 540, and a corrugated cardboard sheet joining device 200 and a blank cutting device 400. It is provided with a corrugated cardboard buffer band 300.

The corrugated cardboard sheet joining device 200 according to the present embodiment has the same configuration as the corrugated cardboard sheet joining device 100 according to the first embodiment, except that the corrugated board sheet joining device 200 is provided on the downstream side of the crimping portion 233. doing. Therefore, among the components of the corrugated cardboard sheet joining device 200 shown in FIG. 7, the same or corresponding components as those described in the first embodiment are designated by a common reference numeral in the last two digits and described as appropriate. Is omitted.

In the corrugated cardboard sheet joining device 200 of the present embodiment as well, similarly to the first embodiment, the sheet-fed corrugated cardboard sheets S are sent out one by one from the paper feeding unit 210 to the transport path, and these corrugated cardboard sheets S are used. The continuous corrugated cardboard sheet C is generated by passing through the paper edge detecting portion 231, the adhesive coating portion 232, and the crimping portion 233. Then, when the continuous corrugated cardboard sheet C passes through the fold ruled portion 260, ruled lines (folded ruled lines) extending over the entire width direction of the continuous corrugated cardboard sheet C are formed at regular intervals.

As shown in FIGS. 7 (b) and 8 (FIG. 8), the folding rule adding portion 260 is hung between the support bases 260b arranged on the left and right sides of the transport path and the left and right support bases 260b, and is continuous on the transport path. It includes two ruled rollers 261a and 261b arranged one above the other so as to sandwich the corrugated cardboard sheet C, and a first driving unit 262a and a second driving unit 262b including a motor or the like for rotationally driving them. The ruled rule rollers 261a and 261b are respectively extended in the width direction of the continuous corrugated cardboard sheet C, and have a width wider than the width of the continuous corrugated cardboard sheet C. Pressing members 263a and 263b extending in the axial direction of the ruled rollers 261a and 261b are provided on the surfaces of the ruled rollers 261a and 261b, respectively. Each of these pressing members 263a and 263b is a rod-shaped member having a substantially rectangular cross section and having the same length as the axial length of the ruled roller 261a and 261b.

As shown in FIG. 9, each pressing member 263a and 263b is formed with grooves 264a and 264b extending in the axial direction, whereby each pressing member 263a and 263b has two protrusions on its tip surface. It has sections 265a, 266a, 265b, and 266b. These ridges 265a, 266a (and 265b, 266b) are provided at intervals of 1 to 3 times the thickness of the continuous corrugated cardboard sheet C. Further, the positions of the two ruled rollers 261a and 261b are such that when the two pressing members 263a and 263b approach each other, the ridge portion 265a on the upstream side of the upper pressing member 263a is the lower pressing member 263b. The center of rotation is shifted in the transport direction of the continuous corrugated cardboard sheet C so as to fit between the two ridges 265b and 266b.

Under the control of the control unit 540, when the first drive unit 262a and the second drive unit 262b of the fold rule giving unit 260 rotate drive the crease rollers 261a and 261b, the continuous corrugated cardboard sheet supplied to the fold rule applying unit 260 is supplied. As shown in FIG. 9, C is pressed from both sides by being sandwiched between the upper and lower pressing members 263a and 263b at regular lengths (for example, 1100 mm). As a result, as shown in FIG. 10, a folding ruled line 610 composed of two adjacent ruled lines 611 and 612 parallel to each other is applied to the continuous corrugated cardboard sheet C at regular intervals.

Here, the folding rule 610 is provided over the entire width of the continuous corrugated cardboard sheet C, but it may be provided only at a part in the width direction. Further, instead of forming the folding rule 610 with the two pressing rules 611 and 612 as described above, the folding rule may be formed from one pressing rule.

The continuous corrugated cardboard sheet C to which the fold rule 610 is provided as described above is sent to the buffer zone 300, and is folded in a bellows shape along the fold rule 610 by a predetermined folding mechanism (not shown). The continuous corrugated cardboard sheet C folded in a bellows shape by the buffer zone 300 is sequentially pulled out from the downstream side thereof, and is sent to the blank cutting device 400 in the subsequent stage in a state of being spread flat. In this way, by providing the buffer band 300 for storing the continuous corrugated cardboard sheet C generated by the corrugated cardboard sheet joining device 200, it is possible to absorb the speed difference between the preceding and following steps, and the corrugated cardboard sheet joining device 200. Even if one of the blank cutting device 400 and the blank cutting device 400 is temporarily stopped for some reason, the one device can be kept in operation.

The blank cutting device 400 is continuous with a transport unit 410 provided with a transport roller 411 for transporting the continuous corrugated board sheet C, and a vertical cutting device 420 for making a vertical (that is, lengthwise) cut in the continuous corrugated board sheet C. The corrugated cardboard sheet C is provided with a crossing device 430 for making a cut in the lateral direction (that is, in the width direction).

The vertical cutting device 420 and the crossing device 430 include support bases 421 and 431 arranged on the left and right sides of the transport path, and frames 422 and 432 spanning the left and right support bases 421 and 431, respectively. ing. The vertical cutting device 420 is further attached to a frame 422 and includes a plurality of vertical cutting units 423 having a cutting edge for making a cut in the length direction of the continuous corrugated cardboard sheet C, and each vertical cutting unit along the frame 422. It includes a left-right movement mechanism 424 that moves the 423 and a vertical movement mechanism 425 that moves the cutting edge of each vertical cutting unit 423 up and down. Further, the cross-cutting device 430 is attached to the frame 432 and has a plurality of cross-cutting units 433 provided with cutting edges for making cuts in the width direction of the continuous corrugated cardboard sheet C, and each cross-cutting unit 433 along the frame 432. It is provided with a left-right moving mechanism 434 for moving the cross-cutting unit 434 and a vertical moving mechanism 435 for moving the cutting edge of each cross-cutting unit 433 up and down.

As the cutting edge of the vertical cutting unit 423 and the horizontal cutting unit 433, for example, a disk-shaped rotary blade, a cutter, a slitter, a slotter, or the like can be used. Although not shown, the vertical cutting device 420 and the horizontal cutting device 430 have a length measuring sensor for correctly measuring the cutting position and a ruled line for inserting a ruled line in a portion to be bent when assembling a corrugated cardboard box from a corrugated cardboard blank. Includes rollers. Further, a take-up roll for winding the portion separated from the continuous corrugated cardboard sheet C by the vertical cutting device 420 may be provided.

When making a cut in the length direction of the continuous corrugated cardboard sheet C in the blank cutting device 400, first, the sheet width is set so that the interval between the cutting edges of the vertical cutting device 420 is set while the transport portion is stopped. , The left-right movement mechanism 424 moves the vertical cutting unit 423 along the frame 422. After that, the vertical movement mechanism 425 lowers the cutting edge onto the continuous corrugated cardboard sheet C, and in that state, the transport unit 410 is driven to make a cut. On the other hand, when making a cut in the width direction of the continuous corrugated cardboard sheet C, the transport unit 410 stops when the position where the cut should be made comes directly below the cross-cutting unit 433, and the cutting edge of the cross-cutting unit 433 starts cutting. The left-right movement mechanism 434 moves the crossing unit 433 along the frame 432 so as to come to the position. After that, the vertical movement mechanism 435 lowers the cutting edge onto the continuous corrugated cardboard sheet C, and in that state, the horizontal cutting unit 433 is driven by the left / right moving mechanism 434, and the cutting edge moves to the cutting end position to make a cut. Can be put in. At the positions of both ends in the length direction of one corrugated cardboard blank B, notches are made in the entire width direction, and as a result, a large number of corrugated cardboard blanks B are sequentially manufactured in a separated state.

Further, at this time, the control unit 540 adjusts the position where the cutting edge of the cross cutting device 430 makes a cut so as to be the valley portion of the corrugated sheet of the continuous corrugated cardboard sheet C, based on the information on the pitch of the wave, which will be described later. To do. This adjustment is performed, for example, by adjusting the dimensions of the portion corresponding to the lid of the cardboard box. This makes it possible to make a straight cut along the valley of the corrugated board in the continuous corrugated cardboard sheet C.

In this corrugated cardboard blank manufacturing apparatus, the user operates the control panel 550 to provide information on the dimensions (length, width, thickness, wavy pitch, etc.) of the single-wafer corrugated cardboard sheet S, and a crease adding portion. Information on the spacing of the creases given in 260, the desired type (A type, tato type, etc.) and size (length, width, height dimensions) of the desired cardboard box is set. When these settings are made, the control unit 540 determines the dimensions of each part of the corrugated cardboard blank B based on the set information, and then drives the corrugated cardboard sheet joining device 200 and the blank cutting device 400 to form a single-wafer type. While transporting or stopping the corrugated cardboard sheet S, a continuous corrugated cardboard sheet C is manufactured from the sheet-fed corrugated cardboard sheet S, and the corrugated cardboard blank B is cut out while transporting or stopping the continuous corrugated cardboard sheet C. It should be noted that the control unit 540 may receive data such as the dimensions of the corrugated cardboard box sent online instead of manually inputting it through the control panel 550 by the user to determine the cutting position and the ruled line position. ..

Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to the above-described embodiments, and modifications are permitted within the scope of the gist of the present invention.

For example, in the corrugated cardboard sheet joining devices 100 and 200 according to the first and second embodiments, as described with reference to FIGS. 4 to 6, the glue margin portions Sa and Sb of the corrugated cardboard sheet S to be joined are crushed. As a result, the thickness of the continuous corrugated cardboard sheet C was prevented from being significantly different between the jointed portion and the other portion, but instead, as shown in FIG. 11, for example, in the glue margin portions Sa and Sb, the corrugated cardboard sheet. At least one of one corrugated board W and two liners L1 and L2 constituting S may not be provided. For example, in the example shown in FIG. 11, a region (glue margin Sa) on which the lower liner L2 is not provided is provided at the front end of the single-wafer corrugated cardboard sheet S over a predetermined length, and the single-wafer corrugated cardboard is provided. A region (glue margin portion Sb) where the corrugated board W and the upper liner L1 are not provided is provided at the rear end of the sheet S over a predetermined length. When such a sheet-fed corrugated cardboard sheet S is joined by the corrugated cardboard sheet joining device 200, of the two corrugated cardboard sheets S transported back and forth on the transport path, the rear end of the corrugated cardboard sheet S on the front side After applying an adhesive to the glue margin portion Sb or the glue margin portion Sa at the front end of the corrugated cardboard sheet S on the rear side, the glue margin portion Sb at the rear end and the glue margin portion Sa at the front end are shown in FIG. The two are bonded by overlapping and pressing from above and below with a roller or the like. At this time, as shown in FIG. 13, even stronger adhesion is possible by allowing the upper liners L1 and the lower liners L2 of the two bonded corrugated cardboard sheets S to partially overlap each other. It becomes.

Further, in the above embodiment, an example of joining while transporting the corrugated cardboard sheet S in a direction orthogonal to the wave is shown, but the present invention is not limited to this, and joining is performed while transporting the corrugated cardboard sheet S in a direction parallel to the wave. You may do it. In this case, the sheet-fed corrugated cardboard sheet S supplied to the corrugated cardboard sheet joining device 200 is below, for example, as shown in FIG. 14, in a region extending over a predetermined length on the front end side (glue margin portion Sa at the front end). The side liner L2 is not provided (that is, the region is composed of only the corrugated board W and the upper liner L1), and the upper side is formed in a region (rear end glue margin portion Sb) extending over a predetermined length on the rear end side. It is assumed that the liner L1 is not provided (that is, the region is composed of only the corrugated board W and the lower liner L2).

When such a sheet-fed corrugated cardboard sheet S is joined by the corrugated cardboard sheet joining device 100 (or the corrugated cardboard sheet joining device 200), the front side of the two corrugated cardboard sheets S transported back and forth on the transport path. After applying an adhesive to the glue margin portion Sb at the rear end of the corrugated cardboard sheet S or the glue margin portion Sa at the front end of the corrugated cardboard sheet S on the rear side, these glue margin portions Sa and Sb are as shown in FIG. The two are bonded by overlapping and pressing from above and below with a roller or the like. When the glue margin portions Sa and Sb are overlapped with each other, as shown in FIG. 17, the unevenness of the corrugated board W of one corrugated cardboard sheet fits into the unevenness of the corrugated board W of the other corrugated cardboard sheet. To do. This makes it possible to prevent a large difference in the thickness of the continuous corrugated cardboard sheet C between the jointed portion and the other portion. Further, at this time, as shown in FIG. 16, by making the upper liners L1 and the lower liners L2 of the two bonded corrugated cardboard sheets S partially overlap each other, stronger adhesion is possible. It becomes.

An apparatus for manufacturing a single-wafer corrugated cardboard sheet S as shown in FIG. 14 is shown in FIG. In the corrugated cardboard sheet manufacturing apparatus 700, the liner base paper wound in a roll shape is set in the first base paper rack 701 and the third base paper hook 703, and the core wound in a roll shape is set in the second base paper hook 702. The base paper is set. Here, the liner base papers set in the first base paper hook 701 and the second base paper hook 702 are of the same width as each other, and the core base paper is several centimeters to several tens of centimeters wider than the liner base paper. Use stuff.

The liner base paper drawn from the first base paper rack 701 (hereinafter referred to as "first liner L1") and the core base paper M drawn from the second base paper hook 702 are single-stage manufacturing machines 704 ("single-stage generation means" in the present invention. Is introduced in). The one-stage manufacturing machine 704 generates a corrugated board W by forming wavy irregularities on the core base paper M (so that the waves are parallel to the width direction of the core base paper M), and at the same time, the corrugated board W is formed. A single-sided corrugated cardboard sheet P is produced by applying an adhesive and bonding the first liner L1. As described above, the core base paper M is wider than the liner base paper, and the corrugated sheet W generated from the core base paper M has the first liner L1 and the right side (lower side in FIG. 18B). It is pasted in a aligned state. Therefore, in the single-sided corrugated cardboard sheet P obtained by the one-stage manufacturing machine 704, the region extending from several centimeters to several tens of centimeters on the left side is in a state where only the corrugated board W is attached (that is, a state in which the first liner L1 is not attached). .. The single-sided corrugated cardboard sheet P thus obtained is introduced into the gluing machine 705, glued to the lower surface (that is, the surface on the corrugated board W side), and the liner base paper (hereinafter referred to as the liner base paper) drawn from the third base paper hook 703. , Called "second liner L2"), and is introduced between the two rollers 711a and 711b. As a result, the single-sided corrugated cardboard sheet P and the second liner L2 are pressed from above and below by the two rollers 711a and 711b and bonded to each other to generate the double-sided corrugated cardboard sheet D (here, the gluing machine 705 and the rollers 711a and 711b). Corresponds to the "two-stage generation means" in the present invention). At this time, since the single-sided corrugated cardboard sheet P and the second liner L2 are attached with their left sides aligned, the double-sided corrugated cardboard sheet D obtained by this has a region extending from several centimeters to several tens of centimeters on the right side. Only the liner L1 and the corrugated board W are in a state (that is, a state in which the second liner L2 is not attached). The double-sided corrugated cardboard sheet D obtained as described above is heated by the hot plate portion 706 and cooled by the cooling portion 707, and then cut to a predetermined length by the cutter machine 709. Further, if necessary, the double-sided corrugated cardboard sheet D is formed with cuts and ruled lines by the slitter scorer 708 before being cut by the cutter machine 709. As a result, the corrugated cardboard sheet S as shown in FIG. 14 is completed. The obtained corrugated cardboard sheets S are stacked by the stacker machine 710 so that the waves are parallel to the transport direction on the paper feed section 110 of the corrugated cardboard sheet joining device 100 according to the present invention as shown in FIG. 1 (for example). , The region to which the second liner L2 is not attached is located on the front side in the transport direction), and is used for manufacturing the continuous corrugated cardboard sheet C.

Further, in the first and second embodiments, an example of manufacturing a continuous corrugated cardboard sheet by joining sheet-fed corrugated cardboard sheets to each other has been shown, but the corrugated cardboard joining device according to the present invention is not limited to this, and is bellows. A continuous corrugated cardboard sheet may be manufactured by joining the long corrugated cardboard sheets folded in a shape or the long corrugated cardboard sheets wound in a roll shape to each other. As a result, when one long corrugated cardboard sheet is used up, the end of the long corrugated cardboard sheet and the tip of the next long corrugated cardboard sheet are automatically connected to form a continuous corrugated cardboard sheet. The waste of paper removal can be eliminated, and the device does not need to be stopped to replenish the long corrugated cardboard sheet. 19 and 20 show configuration examples of such corrugated cardboard sheet joining devices 800 and 900. In these devices, the paper feed units 810 and 910 do not have the kicker 113, and in the device 900 using the roll-shaped long corrugated cardboard sheet S, the roll is used instead of the sheet accommodating unit 111 and the bottom drive mechanism 112. It has substantially the same configuration as the corrugated cardboard joining device 100 shown in FIG. 1 except that a roll support portion 914 for rotatably supporting the long corrugated cardboard sheet S is provided. Therefore, the same or corresponding components as those in FIG. 1 are designated by a common reference numeral in the last two digits, and the description thereof will be omitted. It is more desirable that these corrugated cardboard sheet joining devices 800 and 900 are also provided with the folding rule giving portion 260 as shown in FIGS. 7 to 9. As a result, the continuous corrugated cardboard sheet C can be provided with the folding ruled line 610 as shown in FIG. 10 for each fixed length, and the generated continuous corrugated cardboard sheet C can be folded into a bellows shape. When the continuous corrugated cardboard sheet C is manufactured from the long corrugated cardboard sheet S folded in a bellows shape, the corrugated cardboard sheet S may be formed with the corrugated cardboard sheet 610 only at the joint portion between the corrugated cardboard sheets S.

Further, although another example of the corrugated cardboard sheet S joined by using the corrugated cardboard sheet joining devices 100 and 200 in the first and second embodiments is shown in FIGS. 11 and 14, a corrugated cardboard sheet may be used in addition to these. Can be done. For example, FIG. 21 is the same as the corrugated cardboard sheet S shown in FIG. 11 in that the glue margin portion Sa and the glue margin portion Sb are provided at the front end and the rear end of the sheet-fed corrugated cardboard sheet S over a predetermined length. However, the glue margin portion Sa and the glue margin portion Sb are formed by not providing the lower liner L2 and not providing the upper liner L1, respectively. When such a sheet-fed corrugated cardboard sheet S is joined by the corrugated cardboard sheet joining device 200, of the two corrugated cardboard sheets S transported back and forth on the transport path, the rear end of the corrugated cardboard sheet S on the front side After applying an adhesive to the glue margin portion Sb or the glue margin portion Sa at the front end of the corrugated cardboard sheet S on the rear side, the glue margin portion Sb at the rear end and the glue margin portion Sa at the front end are shown in FIG. The two are bonded by overlapping and pressing from above and below with a roller or the like. As a result, as shown in FIG. 23, the corrugated board W is in a state of being overlapped at the portion where the two corrugated cardboard sheets S are joined, so that the two corrugated cardboard sheets S can be firmly joined.

24 and 25 show a modified example of the corrugated cardboard sheet S shown in FIG. In the corrugated cardboard sheet (double-sided corrugated cardboard sheet) S of this example, two single-sided corrugated cardboard sheets S1 and S2 of the same size, corrugated sheets W1 and W2, are arranged in a state where the corrugated sheets have the same wave size and waves. It is formed by sticking together in a state where it is shifted in the direction parallel to the eyes. As a result, in the corrugated cardboard sheet S, there is no lower liner L2 in the region extending over the predetermined length on the front end side (glue margin portion Sa on the front end), and the region extending over the predetermined length on the rear end side (rear). There is no upper liner L1 in the glue margin portion Sb) at the end, and in the other region (region between the glue margin portion Sa and the glue margin portion Sb) Sc, the two corrugated plates W1 and W2 overlap. It will be in a state of being.

Such a single-wafered corrugated cardboard sheet S also forms a long corrugated cardboard sheet by joining with a corrugated cardboard sheet joining device 100 (or a corrugated cardboard joining device 200) in the same manner as the corrugated cardboard sheet S shown in FIG. be able to. In this example, since the two corrugated sheets overlap at the joint portion of the two corrugated cardboard sheets S, the two corrugated sheets are overlapped in the entire long corrugated cardboard sheet. Therefore, a very strong long corrugated cardboard sheet can be obtained.

100, 200 ... Corrugated cardboard sheet joining device 110, 210 ... Feeding section 120, 220 ... Conveying section 130, 230 ... Joining section 131, 231 ... Paper edge detection section 132, 232 ... Adhesive coating section 133, 233 ... Crimping section 140 540 ... Control unit 150, 550 ... Control panel 260 ... Folded ruled line 261a ... Ruler ruler 262a ... First drive unit 262b ... Second drive unit 263a, 263b ... Pressing member 300 ... Buffer band 400 ... Blank cutting device 410 ... Conveyor unit 420 ... Vertical cutting device 430 ... Horizontal cutting device 610 ... Folded rule 611, 612 ... Pressed rule 700 ... Corrugated cardboard sheet manufacturing device 704 ... Single-stage manufacturing machine 705 ... Gluing machine 711a, 711b ... Roller S ... Corrugated cardboard sheet L1 ... Upper side Liner (1st liner)
L2 ... Lower liner (second liner)
W ... Corrugated sheet Sa, Sb ... Glue allowance

Claims (4)

A corrugated cardboard having a transporting means for transporting a corrugated cardboard sheet in a direction parallel to one side of the corrugated cardboard sheet, and a joining means for joining the opposing ends of two corrugated cardboard sheets transported back and forth by the transporting means. A method of manufacturing a continuous corrugated cardboard sheet by joining a plurality of corrugated cardboard sheets with a sheet joining device.
One liner or one liner and corrugated sheet of the two liners and one corrugated sheet constituting the corrugated cardboard sheet are chipped at the front end and the rear end of each corrugated cardboard sheet conveyed by the conveying means. Provide a corrugated cardboard margin
In the joining means, the glue margin portion provided at the rear end of the front corrugated cardboard sheet of the two corrugated cardboard sheets and the glue margin portion provided at the front end of the rear corrugated cardboard sheet are overlapped with each other. A method for manufacturing a continuous corrugated cardboard sheet, which comprises joining the corrugated cardboard sheets. A continuous corrugated cardboard sheet composed of a plurality of corrugated cardboard sheets arranged in a row and having their edges joined to each other.
The edges of each other are overlapped and joined, and each of the plurality of corrugated cardboard sheets is one of the two liners and one corrugated board constituting each corrugated board sheet at the edge. A continuous corrugated board sheet comprising a liner, or an area where one liner and corrugated sheet are missing. On one surface of the corrugated board, a first liner having a width direction dimension parallel to the wave of the corrugated board and smaller than the corrugated board is attached to one side of the corrugated board in the width direction and the corrugated board. A single-stage generation means for generating a single-sided corrugated cardboard sheet by pasting the first liner in a state where one side in the width direction is aligned with each other.
On the other surface of the corrugated board included in the single-sided corrugated cardboard sheet, a second liner whose width direction is smaller than that of the corrugated board is attached to the other side of the corrugated board in the width direction and the second liner. A two-stage generation means for generating a double-sided corrugated cardboard sheet by pasting the liner with one side in the width direction aligned with each other.
A corrugated cardboard sheet manufacturing apparatus characterized by comprising. The corrugated boards of two single-sided corrugated cardboard sheets of the same size are shifted in a state in which the corrugated sheets are aligned and in a direction parallel to the waves or in a direction orthogonal to the waves. A corrugated board sheet manufacturing apparatus characterized in that it is provided with a two-stage generating means for generating a double-sided corrugated board sheet by pasting it in a state of being stuck.

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