JPH07360B2 - Double deck type corrugated sheet manufacturing equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of mill roll stands for supplying one or two single facers on the so-called wet end side and core paper, liner, and back liner, respectively. In the double-deck type corrugated board sheet manufacturing apparatus in which the gluing device on the dry end side and the double facer are installed on the upper side, both end edges in the longitudinal direction of the single-sided corrugated board sheet supplied to the double facer,
The present invention relates to a novel corrugated fiberboard sheet manufacturing apparatus in which the back liner is also laminated in a so-called edge-aligned manner without being misaligned with both longitudinal edges.

2. Description of the Related Art As a device for continuously producing a double-sided corrugated board sheet or a double-sided corrugated board sheet, a corrugator sheet manufacturing apparatus generally called a corrugator has been put into practical use. This corrugated board sheet manufacturing apparatus is provided with two single facers in series in order to manufacture single-sided corrugated board sheets having different stages individually or simultaneously, and the single facer is provided on the downstream side of these single facers. A gluing device for gluing the corrugated corrugated top of the manufactured single-sided corrugated sheet and a double facer (consisting of a heating section and a cooling section) for pasting a back liner on the single-sided corrugated sheet with the sizing are arranged. The double-sided corrugated cardboard sheet or double-sided corrugated board sheet that has been processed is subjected to the required slitting and scoring processes by the slitter / scorer provided downstream of it, and then cut by a digital cutter into a corrugated sheet of the required length. Transport in a single ring After, so that the laminated reservoir down stacker provided on the downstream side.

And in the conventional corrugator, since the series of these devices are all arranged in series, the total length of the entire corrugator line in the corrugated fiberboard sheet manufacturing plant is 80 m to 1 m.
It was an extremely long facility that reached 00m, and had the drawback of requiring a large space.

Therefore, as shown in FIG. 1, only the so-called wet end side, which is an auxiliary facility for manufacturing single-faced corrugated board sheets, is disposed below the deck plate, and glue is applied to the single-faced cardboard sheet above the deck plate. There has been proposed a double deck type corrugated board sheet manufacturing apparatus having a two-stage configuration in which a dry end side composed of a double facer for laminating the apparatus and a single-sided corrugated board sheet with a back liner is arranged. The structure itself is already known, as disclosed in, for example, Japanese Patent Laid-Open No. 50-70195.

Since the present invention is proposed to solve the drawbacks associated with the implementation of this double-deck type corrugated board sheet manufacturing apparatus, the outline of the apparatus shown in FIG. 1 will be described in order to contribute to the understanding thereof. As mentioned earlier, the double-deck corrugated board sheet manufacturing equipment installs the so-called wet end side on the lower side and the dry end side on the upper side so that the corrugator line occupies the entire length of the corrugated board sheet manufacturing plant. , Is proposed for the purpose of shortening as much as possible. In the apparatus shown in the figure, a double-sided corrugated board DF made by sticking a backliner BL to a single-sided corrugated board SF and two single-sided corrugated board SF are stuck to each other, and a backliner BL is stuck to one of the single-sided corrugated board SF. Two single facers 10 and 12 for manufacturing single-sided corrugated board sheets SF having different stages are arranged so that any of the combined double-sided corrugated board sheets (not shown) can be selectively manufactured. . These two single facers 10 and 12 are the same except for the stage pitch in the stage roll, and the other configurations are all the same.
Only the single facer 10 for producing the A-flute single-sided corrugated board sheet and its accessory mechanism (indicated by reference numeral A) will be described, and the single facer 12 for producing the B-flute single-faced corrugated board sheet and its accessory mechanism ( The description of (reference numeral B) is omitted.

The single facer 10 basically has upper and lower corrugating rolls 14 and 16, a press roll 18 arranged in proximity to the lower corrugating roll 16, and a gluing mechanism 20.
The core paper M fed from the roll body 24 in the mill roll stand 22 installed on the left side of the machine roll can be pinched by the upper and lower roll rolls to give an A flute waveform. Further, on the right side of the single facer 10, there is arranged a mill roll stand 28 on which a roll body 26 around which the liner L is wound is detachably mounted, and the liner L fed from the roll body 26 has a preheater 30. After that, it is supplied to the press roll 16 in the single facer 10 and is bonded to the core paper M glued by the glue mechanism 20 on the corrugated step top portion, and the single-faced corrugated fiberboard sheet SF is continuously formed. Manufactured to. This single-sided corrugated sheet SF is a deck plate 32 constructed horizontally above the single facer 10.
Is supplied to the right along with and is supplied to a double facer 34, which will be described later, arranged above the deck plate 32.

On the left side of the single facer 12 which manufactures the single-sided corrugated board sheet SF having the B-flute corrugation, a double-sided corrugated board sheet DF or a double-sided corrugated board sheet (not shown) is provided.
Mill roll stand 38 that removably mounts the roll body 36 wound with the back liner BL that partially constitutes part of the
Is installed. From this mill roll stand 38,
The back liner BL is guided to the right along the deck plate 32 and through the required guide roll group 40, and joins the double facer 34 provided above the deck plate 32, where the double-sided corrugated fiberboard sheet DF or the double-faced corrugated sheet DF is mixed. It is laminated as a double-faced corrugated sheet.

A preheater 42 and a gluing device 44, which are known mechanisms, are arranged above the deck plate 32, and a double facer 34 composed of a heating section 46 and a cooling section 48 is arranged further downstream thereof, and the double facer 34 Further downstream of the slitter 50 and scorer
52 and digital cutter 54 Other single ring conveyors
56 is arranged.

The case of producing the double-faced corrugated sheet DF having the A flute will be described. The single-faced corrugated sheet SF produced as described above by the single facer 10 is sent to the right along the deck plate 32, and then the guide roll. 58
As a result, the supply direction is changed, and the preheater 42 provided above the deck plate 32 is given a predetermined temperature rise. Further, this single-sided corrugated board sheet SF is glued to the corrugated step top portion of the sheet SF in the pasting device 44, and the double facer 34 arranged on the downstream side in a state in which the pasted corrugated step top portion is directed downward. Is supplied horizontally.

In addition, the back liner BL is the above-mentioned mill roll stand.
After being drawn out from 38, guided largely to the right along the deck plate 32 and through the guide roll group 40, the preheater drum 60 provided below the entrance side of the double facer 34.
The required temperature rise is applied by contacting the. Next, the back liner BL is introduced into the double facer 34, and is bonded by being pressed against the corrugated corrugated top of the single-sided corrugated board sheet SF, whereby the double-sided corrugated board sheet DF is manufactured. In this double facer 34, required heating is performed in the heating section 46 and cooling is performed in the cooling section 48.

In this way, the double-faced corrugated sheet DF of the A flute manufactured by the double facer 34 is further processed by the deck plate.
After passing through the slitter 50 and the scorer 52 provided above 32, the required slitting processing and scoring processing are performed, and after being cut into sheets of a predetermined length by the digital cutter 54, they are shingled on the conveyor 56. The sheet is conveyed to the down stacker 62 arranged at the leftmost end of the line, discharged one by one, and stacked and stored there.

Problems to be Solved by the Invention The double deck corrugated board sheet manufacturing apparatus according to the above-mentioned basic structure is provided with the so-called wet end side below the deck plate 32 and the dry end side above the deck plate 32. It is extremely space-saving in that the total length of the corrugator can be significantly shortened. However, even with this double-deck type corrugated board sheet manufacturing apparatus, the following drawbacks are pointed out when it is actually operated. That is, the single-faced corrugated sheet SF supplied to the double facer 34 (this is a single-sided corrugated sheet when manufacturing a double-sided corrugated sheet, and two single-sided corrugated sheets when manufacturing a double-sided corrugated sheet). 5) and the longitudinal end edges of the back liner BL which are also supplied to the double facer 34 at the lower position of the single-sided corrugated fiberboard sheet SF as shown in FIG. 5 (a). However, it is generally difficult to align the two (this is referred to as "ear alignment"), and unless some measures are taken, as shown in FIG. 5 (b). That is, both end edges (ears) in the longitudinal direction of both are not aligned.

With respect to this point, in the conventional corrugated board sheet manufacturing apparatus other than the double deck corrugated board sheet manufacturing apparatus, as shown in FIG. 7, the back liner BL bonded to the single-sided corrugated cardboard sheet SF is used. Is the mill roll stand 38 arranged on the right side in the vicinity of the preheater 64.
Since it is supplied from the above, it passes through the preheater 64 and the gluing device 44 and is immediately supplied to the double facer 34. Then, in the double facer 34, when laminating the single-faced corrugated board sheet SF pasted on the step top and the back liner BL, the roll body 36 of the mill roll stand 38 for supplying the back liner BL is axially moved by a known mechanism. The ears are aligned by displacing the ears by a predetermined distance.

In this conventional mechanism, since the mill roll stand 38 for supplying the back liner BL and the double facer 34 are extremely close to each other in distance, it is only necessary to adjust the axial position of the roll body 36 in the mill roll stand 38. It was possible to easily adjust the edge alignment with the single-faced cardboard sheet SF in the double facer 34.

However, in the double-deck type corrugated board sheet manufacturing apparatus according to the configuration shown in FIG. 1, two mill roll stands 38 for supplying the back liner BL are provided below the deck plate 32, as easily understood from FIG. The single facers 10 and 12 are arranged at the left side of the single facer 10 in a spaced manner. Therefore, the back liner LBL is largely pulled out from the roll stand 38 to the right along the deck plate 32 and finally guided to the double facer 34 installed on the upper right side of the deck plate 32.
That is, the back liner BL has to travel an extremely long distance from the mill roll stand 38, which is the supply source thereof, to the double facer 34, which is attached to the single-faced cardboard sheet SF glued to the top of the step. There is. Therefore, even if the axial movement of the roll body 36 is adjusted in the mill roll stand 38 for the back liner BL, the effect is not immediately brought to the double facer 34 that is far away. Therefore, unless some measures are taken against this, in the double facer 34, the "edge alignment" at both longitudinal end edges of the single-faced corrugated fiberboard sheet SF and at both longitudinal end edges of the back liner BL is performed.
Is not achieved, and the laminated double-faced corrugated board sheet or double-sided double-faced corrugated board sheet causes a serious manufacturing defect. This has a great influence on the quality of manufactured products, and causes complaints from users.

OBJECT OF THE INVENTION The present invention, in the double-deck type corrugated board sheet manufacturing apparatus according to the above-described configuration, the single-faced corrugated sheet sheet supplied to the double facer, and the back liner, in view of the drawback of causing unevenness in both longitudinal edge portions, It was proposed to solve this, and even if the installation position of the mill roll stand that supplies the double facer and the backliner is widely separated from each other, the double facer has a double-faced corrugated sheet and an alignment of the backliner. It is an object of the present invention to provide a means that is suitable for.

Means for Solving the Problems In order to overcome the above problems and preferably achieve an intended purpose, the present invention provides at least one single facer and a mill for supplying core paper to the single facer. A roll stand, a mill roll stand that supplies a liner to the single facer, and a mill roll stand that supplies a back liner to a double facer are installed below the deck plate, and a single-faced corrugated sheet manufactured by the single facer. In a double-deck type corrugated sheet manufacturing apparatus, which is installed above the deck plate, a double facer for manufacturing a double-sided or double-sided corrugated sheet by laminating the back liner on a single-sided corrugated sheet that is an object to be laminated. On the other hand, the back liner is displaced in the direction orthogonal to the supply direction and the ears are aligned. A device for performing the above is arranged immediately upstream of the double facer, and the roll body wound with the back liner is synchronized with the operation of the selvage aligning device in the same amount in the direction orthogonal to the supply direction of the back liner. The apparatus for displacing only the above is arranged on the mill roll stand for the back liner.

Embodiments Next, a double-deck type corrugated board sheet manufacturing apparatus according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments. This embodiment is a double deck type corrugated fiberboard sheet manufacturing apparatus described with reference to FIG. 1 and has a double facer arranged above the deck plate 32.
A mechanism for displacing the backliner BL in the direction orthogonal to the supply direction with respect to the one-sided corrugated board sheet SF that is the object to be bonded is provided upstream of the inlet side of 34, and a mill that supplies the backliner BL. Even in the roll stand 38, the same amount of axial displacement as the amount of displacement is synchronously applied to the roll body.
It is designed to be given to 36.

2 to 4 show a back liner BL displacing device (ear aligning device) additionally provided on the preheater drum 60 installed on the lower side of the upstream side of the double facer 34. That is, FIG. 2 is a side view of a device for displacing the back liner BL, and FIG. 3 shows the displacement device shown in FIG.
FIG. 6 is a front view of the back liner BL as observed from the supply direction side. In the figure, the exterior frame 6 that constitutes the gluing device 44
A pre-heater drum 60 is fixedly arranged below the 6, 66, and the frame 66, 6 is sandwiched with the pre-heater drum 60 interposed therebetween.
A pair of pivot shafts 68, 70 are fixedly arranged above and below the parallel 6 in parallel. A guide mechanism for adjusting the displacement of the back liner BL is provided on each of the upper and lower pivot shafts 68, 70. Since these guide mechanisms are the same regardless of the configuration provided on either the upper pivot shaft 68 or the lower pivot shaft 70, only the upper guide mechanism will be described, and the lower mechanism will not be described. Is omitted.

A pair of support frames 72, 74 are rotatably pivotally supported on the upper pivot shaft 68 at a predetermined distance from each other. A screw shaft 76 is formed by threading a male screw in the opposite direction on the support frames 72, 74. But,
A pulley 78, which is rotatably supported and is provided at one end thereof, is connected to a pulley 82 of a motor 80 provided on one support frame 72 via a belt 84, and the screw shaft 76 is connected to the screw shaft 76 by rotation of the motor 80. It is designed to give rotation in the required direction. In addition, the parts 76a and
Guide plates 86 and 88 are respectively screwed into 76b, and each guide plate 8
The ends of 6,88 are slidably fitted on the pivot shaft 68,
A rotation stop is applied to the guide plate. With this configuration, when the screw shaft 76 is rotated in the required direction, the two guide plates 86, 88 approach and separate in a state of maintaining a parallel relationship with each other depending on the rotating direction, and the width intervals thereof are increased. Can be adjusted.

A rotation detector 90 represented by a tachometer is arranged at the other end of the screw shaft 76, and a signal from the rotation detector 90 is supplied to a comparator provided in an electric control circuit as shown in FIG. 92
It is designed to be input to.

The displacement device of the back liner BL according to this configuration has the same mechanism but is also provided on the lower pivot shaft 70 described above, but this is used when one of the displacement devices is used while the other displacement device is used. This is because the width spacing of the guide plates 86 and 88 is adjusted and the next order change can be dealt with quickly. For this purpose, as can be seen from FIG. 2, the respective support frames 7 in the backliner displacement device arranged two above and below.
2, 74 are commonly connected by a connecting rod 94. The supporting frame 72 in the further upper displacement device is a piston rod of a pneumatic cylinder 96 whose one end is connected to the fixed part side.
It is linked to 98. By urging the cylinder 96 to extend the piston rod 98 downward, the upper displacement device can be positioned on the preheater drum 60, and the lower displacement device can be separated from the preheater drum 60. Similarly, the cylinder 96 is reversely biased and the piston rod 98 is retracted upward so that the upper displacement device can be separated from the preheater drum 60 and the lower displacement device can be positioned close to the preheater drum 60. it can. Each guide plate 86, 88 is formed with a required arcuate notch so that the preheater drum 60 can escape.

Further, as shown in FIG. 6, the rotation of the motor 80, which is a drive source in the displacement device, is constantly monitored by a rotation detector 90 such as a tachometer, and its signal is input to a comparator 92. Similarly, the rotation signal from the motor 95 in a known mechanism for axially moving and adjusting the roll body 36 provided on the mill roll stand 38 for the backliner BL shown in FIG. 1 is also detected by the tachometer 97. , That signal is input into the comparator 92. Then, in this comparator 92, a control command according to a certain deviation with respect to the reference signal is fed back to the motor 80 in the displacement device or the motor 95 for axially adjusting the roll body 36 of the mill roll stand 38,
Thereby, for example, the displacement amount from the displacement device of the back liner BL shown in FIG. 3 can be synchronously adjusted as it is as the displacement amount of the roll body 36 in the mill roll stand 38 for the back liner BL.

The actual use of the displacement adjusting mechanism of the backliner BL of the double-deck type corrugated board sheet manufacturing apparatus according to the present embodiment configured as described above will be described. The single-faced cardboard sheet SF supplied to the entrance side of the double facer 34 provided above the deck plate 32 has its both end edges in the longitudinal direction as a reference. Then, the longitudinal end edges of the back liner BL pulled out from the mill roll stand 38 are adjusted by manual operation with respect to the longitudinal end edges of the single-faced corrugated fiberboard sheet SF. Ie back liner BL
Is brought into contact with the preheater drum 60. At this time, the guide plates 86 and 88 shown in FIG. 3 are moved toward or away from each other by the forward or reverse operation of the motor 80 to adjust the width thereof. Do. As a result, the single-faced corrugated sheet SF supplied by the double facer 34 and the mill roll stand
Ear alignment with the back liner BL pulled out from 38 is completed.
In this case, the rotation of the motor 80 is detected as a rotation signal by the tachometer 90, and a command signal is supplied to the motor 80 of the mill roll stand 38 via the comparator 92 as described with reference to FIG. Adjust the displacement of 36 in the axial direction. Here again, the back liner BL is synchronously displaced in the same direction by the same amount as the displacement adjusted on the double facer 34 side. When the operation of the corrugated board sheet manufacturing apparatus is started in this state, even if the mill roll stand 38 for the back liner BL is greatly separated from the double facer 34 by the distance, the edge of the corrugated cardboard sheet at the entrance side of the double facer 34 is not heard. Good alignment. Moreover, at the same time, the same amount of position adjustment is performed on the side of the mill roll stand 38, which is the supply source of the back liner BL, so that the back liner BL is not forcefully applied and the ears are smoothly aligned. Good quality double-sided corrugated board or double-sided corrugated board is produced continuously.

EFFECTS OF THE INVENTION As described above, according to the double-deck type corrugated board sheet manufacturing apparatus according to the present invention, the mill roll stand for supplying the back liner is provided on the double facer provided on the deck plate based on the restriction on the structure of the apparatus. On the other hand, even if they are widely separated from each other, the edges of the double facer are aligned with the single-faced corrugated sheet, and the same amount of axial displacement of the roll body is adjusted synchronously with the mill roll stand that is the supply source. As a result, the corrugated cardboard sheet with aligned edges is always manufactured. As a result, defects and other waste of the corrugated cardboard sheets are eliminated, and the production of high-quality corrugated cardboard sheets that users always demand is secured.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a schematic structure of a double deck type corrugated board sheet manufacturing apparatus, FIG. 2 is a side view of a backliner displacement apparatus suitably used in an embodiment according to the present invention, and FIG. FIG. 4 is a front view of the displacement device shown in FIG. 4, FIG. 4 is a perspective view showing the schematic structure of the displacement device shown in FIGS. 2 and 3, and FIG.
FIG. 5 (a) is a perspective view showing a state in which the edges are preferably aligned between the liner and the single-faced corrugated board sheet, and FIG. 5 (b).
Is a perspective view showing a state where both end edges are not aligned between the liner and the single-sided corrugated board sheet, FIG. 6 is a block diagram of an electric control circuit, and FIG. 7 is a conventional corrugated board sheet manufacturing apparatus adopting a serial type. FIG. 7 is a partial schematic explanatory view showing a state in which the back liner attached to the single-sided corrugated cardboard sheet is supplied from the mill roll stand arranged on the right side adjacent to the preheater and immediately supplied to the double facer. Single facer …… 10 Mill roll stand …… 22 Mill roll stand …… 28 Deck plate …… 32, Double facer …… 34 Roll body …… 36, Mill roll stand …… 38 Back liner …… BL, Liner …… L , Core paper …… M Single-sided corrugated sheet …… SF

Claims (1)

[Claims] 1. At least one single facer (10).
A mill roll stand (22) for supplying the core paper (M) to the single facer (10), and a mill roll stand (28) for supplying a liner (L) to the single facer (10), Double facer (34) to back liner (BL)
And a mill roll stand (38) for supplying the same are installed below the deck plate (32), and the back liner (BL) is attached to the single-faced corrugated fiberboard sheet (SF) manufactured by the single facer (10). In the double-deck type corrugated sheet manufacturing apparatus in which the double facer (34) for manufacturing double-sided or double-sided corrugated sheet is installed above the deck plate (32), the single-sided corrugated sheet (SF ), A device for displacing the back liner (BL) in a direction orthogonal to the supply direction is arranged immediately upstream of the double facer (34) to wind the back liner (BL). The roll body (36)
A mill roll stand (38) for a back liner (BL), which is a device that displaces the same amount in the direction orthogonal to the supply direction of the back liner (BL) in synchronization with the operation of the edge aligning device.
A double-deck corrugated board sheet manufacturing device characterized by being installed in