JPH08333043A - Base paper roll carrying-in/-out device - Google Patents

Abstract

PURPOSE: To efficiently conduct the carrying-in/-out work and replacing work of base paper rolls in a short time at a mill roll stand, realize an efficient in-plant facility layout for space saving and facility saving, and conduct the efficient operation of carriages with one base paper roll waiting line. CONSTITUTION: Multiple carriages 13a-13d are moved synchronously with each other on a loop track 12 circulating around a mill roll stand 10, and the carriages 13a-13d are moved between four stop positions set on the loop track 12. The waiting line and carry-out transfer path of base paper rolls for the mill roll stand 10 can be set in the direction perpendicular to the feeding direction of the base paper to a corrugating machine from the mill roll stand 10, and the base paper rolls can be turned during the carrying-in/-out actions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base paper roll carry-in / out apparatus for carrying a base paper roll into or out of a mill roll stand in a corrugated board manufacturing facility.

[0002]

2. Description of the Related Art As is well known, corrugated board is continuously fed from a base paper roll to a corrugated board manufacturing apparatus (corrugator machine), and the corrugated board is formed into corrugated or corrugated shape. It is manufactured by bonding the prepared base paper (core paper) to another base paper (liner paper) which is the front surface and / or the back surface of the corrugated board.

In general, the raw paper fed into the corrugator machine reaches a predetermined corrugated board production length for the amount of feeding from the raw paper roll, or the consumed paper length of the raw paper roll (hence the remaining paper length) reaches a predetermined limit value. When it is reached, it is switched to a new base paper roll. In order to switch such base paper, the paper feeding facility is provided with a mill roll stand equipped with a pair of rocking base paper hooks and an automatic paper splicing device (splicer), and one of the base paper hooks is loaded. While the base paper roll A is feeding the corrugator machine, the next scheduled base paper roll B is carried into the mill roll stand and the preparation work for loading the other base paper rack is completed. When the feeding amount of the base paper roll A reaches a predetermined value, the splicer bonds the base paper from the base paper roll B to the base paper from the raw paper roll A being fed and cuts the base paper of the base paper roll A.
The base paper from the base paper roll B is supplied to the corrugator machine without interruption of the paper feeding operation.

In such a paper splicing operation, it is necessary to keep the line speed constant so that the processing conditions in the corrugator machine are kept constant. In the past, the paper splicing operation by the splicer was performed at the line speed of the machine. At the same speed, more recently, an accumulator looper was installed between the splicer and the corrugator machine to slow down or stop only the feeding speed while maintaining the line speed during the paper splicing work. It is working, but in any case, it is necessary to finish the splicing work efficiently in a short time.

However, particularly in the case of continuous production of small lots of various types of corrugated board, the base paper being fed is often switched to a new base paper of a different type within a relatively short time. In the stand, not only the splicer operation but also the work of loading various base paper rolls waiting in the order according to the production plan near the mill roll stand to the base paper hanging position of the mill roll stand, and the splicer splicing work The work of removing the old base paper roll remaining on the base paper cover after completion from the base paper cover and carrying it out from the mill roll stand is relatively frequently performed.

It is necessary to carry out such a work of loading and unloading the base paper roll between the end of the splicing work of the splicer and the start of the next splicing work, and moreover, the base paper roll is a heavy load. Therefore, the mill roll stand is equipped with a base paper roll loading / unloading device as an auxiliary equipment for loading the base paper roll from the standby position to the loading position for the base paper rack and for carrying the base paper roll removed from the base paper rack to the outside of the mill roll stand. Has been.

FIG. 4 shows an example of a conventional base paper roll loading / unloading device. In this base paper roll loading / unloading device, a pair of orbits 42a and 42b are arranged in parallel with the axis of the base paper roll in the base paper rack, corresponding to the pair of swing base paper racks 41a and 41b of the mill roll stand 40, respectively. On the track, base paper roll transport carriages 43a and 43b are arranged one by one.

In FIG. 4, (a) to (d) sequentially show one cycle of the base paper roll loading / unloading and the automatic paper joining process,
A to E respectively show the base paper rolls carried into the mill roll stand in the order according to the production plan.

In FIG. 4A, the raw paper roll A is loaded on one raw paper rack 41a of the mill roll stand 40 and is fed to a corrugator machine (not shown). At this time, the next scheduled base paper roll B is already loaded in the other base paper cover to prepare for the paper splicing operation. Bogies 43a and 43b on the tracks 42a and 42b
Has stopped at the roll exchange position of each base paper rack, and when this base roll cover 41a, 41b descends, the base paper roll on the carriage is mounted on the base paper rack or the base paper roll of the base paper rack is mounted on the carriage. It is a predetermined trolley stop position that is set for placement. In addition, on the side of one of the tracks 42b, a plurality of base paper rolls C,
D, ... are waiting. The orientations of all of these base paper rolls are parallel to the axis of the base paper roll in the base paper hooking, and the orientation of the axis of the base paper roll cannot be changed during the period from standby to delivery.

FIG. 4B shows a state in which the paper feed to the corrugator machine has been switched from the base paper roll A to the base paper of the base paper roll B by the well-known automatic paper splicing device from the state of FIG. 4A. ing. The base paper roll A has already been removed from the base paper rack 41a of the mill roll stand 40, the base paper rack 41a is waiting in the raised position, and the removed base paper roll A is moved to the carry-out position on the track 42a by the carriage 43a. There is. At this carry-out position, the base paper roll A has a carriage 4
It is unloaded from 3a by human power by a worker or machine operation such as a forklift truck, and is rolled to a carry-out line (not shown) as indicated by an arrow and finally transported to a base paper roll storage location or an air core collection location. In this case, since it is generally difficult for an operator to enter near the mill roll stand, the unloading position where the carriage 43a stops is the track 42.
Therefore, the carriage 43a, which has been set at the end portion of a and has lowered the old base paper roll A at the carry-out position, is returned to the carry-in position with the empty state, and then the next base paper roll C waiting on the side of the track 42b is set. It is necessary to load the same truck 43a over the track 42b. Further, when the standby rows form a plurality of parallel rows, the carriage 4 that is moved from the carry-out position with an empty load
3a may be alternately changed to the front position of the waiting line in which the next scheduled base paper roll is positioned at the head, and may be stopped.

FIG. 4 (c) shows a state in which the corrugator machine is being fed with the base paper from the base paper roll B in the state of FIG. 4 (b), and the base paper roll A is lowered onto the empty carriage 43a. It shows a state in which the next base paper roll C is stacked. In this case, the base paper roll C is loaded on the carriage 43a that has passed the track 42b from the head of the waiting line and stopped at the loading position on the track 42a, and the work for this purpose is performed manually or by a forklift vehicle with an attachment for grasping the base paper roll. And so on. In this state, the base paper roll D is located at the head of the waiting line.

FIG. 4 (d) shows a state in which the base paper roll C loaded on the carriage 43a is carried on the track 42a by the carriage 43a and reaches the roll exchange position of the base paper rack 41a already waiting at the raised position. Is shown. After that, the base paper roll C is loaded on the base paper rack 41a, and a series of operations of one cycle is performed. As described above, when the base paper roll B that is currently feeding paper feeds a predetermined amount, automatic paper splicing is performed. The front end of the base paper from the base paper roll C is connected to the cut end of the base paper of the base paper roll B by the device, and the paper feed from the base paper roll B to the base paper roll C is switched.

[0013]

In the above-described conventional base paper roll loading / unloading device, when carrying out the old base paper roll and the new base paper roll by one of the carriages 43a, many movements of the carriage are wasteful. Moreover, in the meantime, for example, FIG.
(D) Like the carriage 43b arranged on the track 42b, the other carriage is idle during one cycle of the base paper roll exchange, which means that the base paper roll removed from the base paper holder is carried to the discharge position. It means that the next roll of paper cannot be carried on the same track unless it is taken off from there.
As long as there is such a restriction on work, it is not possible to efficiently carry out and carry out the work of loading and unloading the base paper roll within a short period of time, and especially in the corrugated board manufacturing equipment that intends to achieve continuous production of a large variety of small lots, This is a fatal drawback that is not compatible with a high-efficiency automatic production system controlled by a computer.

Further, in the conventional base paper roll loading / unloading device, as shown in FIGS. 4 (b) and 4 (c), for example, a new base paper roll C is transferred from a waiting line to a carriage 43a in which the old base paper roll A is unloaded to the carry-out line. In order to avoid this, it is necessary to roll the new base paper roll C over the track 42b when loading, and in order to avoid this, a new base paper roll dedicated to each side of each track with respect to the pair of base paper racks. It is necessary to set up each of the stand-by queues and the rolling path to the unloading line, which would not only require extra factory space, but also the base paper rolls arranged in each stand-by row according to the production plan. There is also an inconvenience that the order of becomes complicated.

Furthermore, in the case where an attempt is made to efficiently operate a trolley in a single standby line in the conventional apparatus, for example, as shown in FIG.
It is also possible to put the base paper roll whose axis is oriented in the direction orthogonal to the track at the position K shown by the broken line in (a), but in this case, when loading the base paper roll on the carriage from the standby position, It is necessary to turn the roll direction, not only to install a large-scale turntable for turning the heavy base paper roll, but also to transfer the base paper roll to the turntable or to turn the turntable. Further, there is a drawback that extra work time is required for transferring the base paper roll from the turned turntable to the carriage, and as a whole for turning the base paper roll, a quick work cannot be performed.

The present invention is intended to solve the above-mentioned problems of the prior art, and it is possible to efficiently carry out and carry out the work of loading and unloading the base paper roll in the mill roll stand in a short time. It is an object of the present invention to provide a base paper roll loading / unloading device capable of realizing an efficient equipment layout in a factory with a space saving and equipment saving, and efficiently operating a trolley in one line of the base paper roll standby line.

[0017]

A base paper roll loading / unloading device according to the present invention performs a loading / unloading operation of a base paper roll obtained by winding a base paper in a coil shape with respect to a mill roll stand for supplying the base paper to a corrugated board manufacturing apparatus. In order to do so, it is equipped with a loop track that goes around the circumference of the mill roll stand, and a plurality of carriages that are equipped with base paper rolls and can reciprocate on the loop track. The first, second, third, and fourth stop positions can be synchronously moved, and the first stop position is a carry-in position for transferring the base paper roll to be carried into the mill roll stand onto the carriage. The second stop position is a base paper roll exchange position with respect to one of the pair of swing base paper hooks of the mill roll stand, and the third stop position is a base paper roll to be carried out from the mill roll stand. Is a unloading position for unloading the trolley from the trolley, and the fourth stop position is a stencil roll exchange position for the other of the pair of rocking stencil rolls of the mill roll stand, and the trolley of the trolley at the first and third stop positions. The orientation is substantially perpendicular to the orientation of the carriage in the second and fourth stop positions.

According to a preferred aspect of the present invention, the carriage disposed in the loop track has a first carriage that reciprocates between a first stop position and a second stop position, and a second stop position. And a third stop position for reciprocating the second carriage, a third stop position and a fourth stop position for exclusively reciprocating the third carriage, a fourth stop position and the first stop position. It is possible to use a fourth carriage that reciprocates exclusively between the stop positions, and in this case, the four carriages are configured to reciprocate simultaneously in synchronization while maintaining the mutual spacing.

[0019]

In the stencil roll loading / unloading apparatus according to the present invention, the loop track makes one round around the mill roll stand, and a plurality of carriages are mounted on the loop track so that the stencil rolls can be reciprocated. ing. These carriages move in synchronization on the loop path between predetermined first, second, third and fourth stop positions.

The first stop position is a carrying-in position for moving the base paper roll to be carried into the mill roll stand onto the carriage, and the second stop position is one of the pair of rocking base paper racks of the mill roll stand. The third stop position is a carry-out position for lowering the base paper roll to be carried out from the mill roll stand from the carriage, and the fourth stop position is a pair of mill roll stands. This is a base paper roll replacement position for the other of the rocking base paper covers.

The direction of the truck on the loop track, that is, the axial direction of the truck movement is parallel to each other at the first stop position and the third stop position, and at the second stop position and the fourth stop position. Are also parallel to each other. Here, when the direction of the carriage at the first stop position and the third stop position is represented by the direction X and the direction of the carriage at the second stop position and the fourth stop position is represented by the direction Y, the directions X and Y are mutually defined. The directions are orthogonal.

Therefore, by arranging the standby row of the base paper rolls adjacent to the first stop position, that is, the carry-in position for transferring the base paper rolls to be carried into the mill roll stand onto the carriage,
The respective base paper rolls in this standby row may be arranged in a line with the axis thereof directed in the direction X, and the base paper rolls can be rolled in this direction and loaded on the carriage. The carriage loaded with the base paper roll moves in the axial direction together with the loaded base paper roll in accordance with the curve of the loop track while moving to the second stop position or the fourth stop position, that is, the roll replacement position of the base roll of the mill roll stand. When it turns 90 degrees and reaches the roll exchange position, the axial direction of the loaded raw paper roll is oriented in the direction Y along the axial direction of the raw paper hook.

Similarly, from the second stop position or the fourth stop position, that is, the roll replacement position of the base roll of the mill roll stand, to the third stop position, that is, the base roll to be unloaded from the mill roll stand from the carriage. Even when moving to the unloading position for unloading, the carriage loaded with the base paper roll removed from the base paper hook moves along the curve of the loop track along the axial direction of 90 degrees along the loop track curve while moving to the third stop position. At the time of turning around and reaching the carry-out position, the axial direction of the loaded raw paper roll is directed in the direction X. in this way,
Since the axial direction of the base paper roll faces the direction X at the carry-out position, the rolling path to the carry-out line can also be set as the rolling path oriented in the same direction as the standby row.

In this way, according to the present invention, a plurality of trucks move in synchronization with each other on a loop track that goes around the circumference of the mill roll stand, and each truck has four stop positions defined on the loop track. Because of the movement between the mill roll stands, it is possible to carry out the work of loading and unloading the base paper roll with respect to each of the pair of base paper covers of the mill roll stand in parallel. That is, in the present invention, a trolley for exclusively carrying out the stencil roll and a trolley for exclusively carrying in the stencil roll are reciprocally moved synchronously on the loop track with respect to one stencil holder of the mill roll stand. However, as the old base paper roll removed from the base paper rack is carried out by the carry-out carriage, the carry-in carriage loaded with the new base paper roll carries the new base paper roll into the same base paper rack, so one base paper rack The loading and unloading operations of the base paper roll with respect to are simultaneously performed in parallel.

Generally, a mill roll stand is provided with a pair of base paper rolls, and one of the base paper rolls is replaced while the other is being fed. Therefore, according to the basic idea of the present invention, the pair of base paper rolls for the base paper rolls is replaced. In order to carry out the carry-in / carry-out work, at least two carriages may be arranged in the loop track, and the carry-in / carry-out work of the base paper rolls for both the base paper racks may be alternately carried out by these carriages, but more preferably. A total of four bogies, two for each of the pair of base papers, are arranged in a loop track, and these four bogies are synchronized with each other while maintaining equal intervals so that they can be stopped simultaneously at four stop positions. It is good to move back and forth.

For example, when a total of four bogies are arranged at equal intervals on the loop track and one bogie is stopped at each of the four stop positions, the reciprocating movement in one direction is as follows:
When the first carriage in the first stop position moves to the second stop position, the second carriages in the second stop position move to the third stop position all at once, and the third stop The third trolley at the position moved to the fourth stop position, and the fourth trolley at the fourth stop position
The dolly moves to the first stop position. Similarly, in the reciprocating movement in the other direction, when the fourth carriages that were in the first stop position move to the fourth stop position, the third carriages that were in the fourth stop position all at once. The second carriage moved to the third stop position, and the second carriage that was in the third stop position moved to the second stop position,
The first trolley that was in the stop position moves to the first stop position. In this case, since each of the four carriages reciprocates in synchronization with each other between the two predetermined stop positions while maintaining the mutual arrangement intervals, the work at the stop positions of the respective carriages is performed in parallel. It can be carried out.

Further, according to the present invention, since the standby line of the base paper rolls and the carry-out transfer path for the mill roll stand can be set in the direction orthogonal to the paper feed direction of the base paper from the mill roll stand to the corrugator machine, the layout of the equipment in the factory is long. Moreover, since the rolls of the base paper rolls are simultaneously achieved during the loading / unloading operation, it is not necessary to provide extra equipment such as a turntable.

In the present invention, the first stop position for loading the base paper roll on the carriage for loading into the mill roll stand, and the base paper roll from the top for carrying out from the mill roll stand. At the third stop position for unloading, in order to facilitate the loading / unloading operation of the base paper roll with respect to the trolley, the height difference between the floor surface of the standby row or the unloading rolling path and the roll loading surface of the trolley is reduced. Therefore, particularly preferably, in the first stop position, the roll mounting surface of the trolley is below the standby row floor surface, and in the third stop position, the roll mounting surface of the trolley is below the floor surface of the carry-out rolling path. So that
The level of the loop track may be set, or a jack device for raising and lowering the loaded base paper roll may be incorporated in each carriage.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a base paper roll loading / unloading device according to an embodiment of the present invention. (A) to (d) show one cycle of the base paper roll carry-in / out and one cycle of the automatic paper splicing process in order, and A to F show the base paper rolls carried into the mill roll stand in the order according to the production plan. This base paper roll loading / unloading device is provided with a loop track 12 which goes around a pair of rocking base paper racks 11a and 11b of a mill roll stand 10 on the floor surface, and on the loop track 12, an endless drive chain keeps a distance between them. The four base paper roll transport carriages 13a to 13d, which move in a reciprocating manner in synchronization with each other, are arranged at equal intervals.

In the state shown in FIG. 1A, the base paper roll A
Is loaded on one of the base paper racks 11a of the mill roll stand 10 and is fed to a corrugator machine (not shown). At this time, the next original paper roll B is already loaded in the other original paper rack 11b in preparation for the paper splicing operation.

On the loop track 12, the carriage 13a is the first
It is stopped at the stop position, that is, at the carry-in position for transferring the base paper roll to be carried into the mill roll stand onto the carriage, and the next base paper roll C has already been loaded on the carriage 13a.
Further, the carriage 13b is stopped at the second stop position, that is, at the base paper roll replacement position for one of the swinging base paper racks 11a of the mill roll stand to prepare for the placement of the base paper roll A to be carried out next. In addition, the carriage 13c has a third stop position,
That is, the base paper roll to be carried out from the mill roll stand is stopped at the carry-out position for unloading from the carriage, and the base paper roll has already been unloaded from this carriage 13c.
3c is in an empty state. Further, the carriage 13d is at the fourth stop position, that is, the other swinging base paper rack 11 of the mill roll stand.
It is stopped at the base paper roll replacement position with respect to b, and the base paper rack 11b is loaded with the carriage 13 in the previous cycle.
d is the base paper roll B that has been conveyed from the first stop position, and therefore the carriage 13d is in an empty state in the state of FIG.

Adjacent to the loop track 12 and beside the first stop position, a plurality of base paper rolls D, E, ... Form a standby line on a feed conveyor device in the order according to the production plan. In addition, a carry-out conveyor line 14 to a base paper roll storage location or an air core collection location (not shown) is arranged beside the third stop position. The directions of the standby rolls and the base paper rolls on the carriages at the first stop position and the third stop position are the same as those of the base paper rolls at the second stop position and the fourth stop position and on the base paper rolls 11a and 11b. The axes are oriented orthogonally.

In the state shown in FIG. 1B, the paper feeding to the corrugator machine is switched from the raw paper roll A to the raw paper of the raw paper roll B from the state shown in FIG. Therefore, the base paper roll A has already been removed from the base paper rack 11a of the mill roll stand 10, and the base paper rack 11a stands by at the raised position. Base paper cover 11a
The base paper roll A removed from the above is loaded on the carriage 13b waiting at the second stop position, and is already being conveyed on the loop track 12 clockwise in the drawing toward the third stop position, that is, the carry-out position. . At this time, the other carriages are simultaneously moving in the same direction at the same time, and the carriage 13a is transporting the base paper roll C toward the base paper roll exchange position (second stop position) for the base paper rack 11a. Also, 13d and 13d are respectively moving toward the base paper roll exchange position (fourth stop position) and the carry-in position (first stop position) for the other base paper rack 11b.

The state of FIG. 1 (c) shows the state in which the carts shown in FIG. 1 (b) have finished moving clockwise and stopped at their respective stop positions. That is, the carriage 13a loaded with the base paper roll C is stopped at the base paper roll exchange position (second stop position) for the base paper rack 11a, and the base paper roll A
The trolley 13b loaded with is stopped at the carry-out position (third stop position), and the trolley 13c in the empty state is stopped at the base paper roll exchange position (fourth stop position) for the base paper rack 11b and then the next paper In preparation for the unloading of the base paper roll B to be removed in the joining operation, the trolley 13d, which is also in the empty state, is in the loading position (first
Paper roll D at the top of the waiting line after stopping at the stop position)
In preparation for carrying in.

In this state, while the paper feed from the base paper roll B continues, the base paper rack 11a is loaded with the base paper roll C on the carriage 13a stopped at the second stop position, and is also carried out. At the position (3rd stop position), the base paper roll A
Is rolled by a worker or machine operation and moved from the carriage 13a to the carry-out conveyor line 14 with the same axial direction, and at the carry-in position (first stop position), the base paper roll D at the head of the waiting line is worked. It is rolled by a person or machine operation and is transferred onto the carriage 13d in the same axial center direction, and waits for the start of the next cycle as shown in FIG. 1 (d). This standby state corresponds to a state in which the state shown in FIG. 1A is turned upside down in the drawing.

In the next cycle, following the paper splicing work of the base paper roll B on the base paper rack 11b, each carriage is shown in FIG. 1 (d).
From the state of, move counterclockwise all at once on the drawing, just
1 (b) (c) (d) are turned upside down in the drawings, and after each state, the state of waiting for the start of the next cycle, that is, the state of FIG. 1 (a) is returned. . However, the base paper roll E is located at the head of the standby line in this case.

The movement and stop of the trolley during the loading and unloading of the base paper roll and the automatic paper splicing work during the base paper roll described above are performed in a predetermined order of the base paper rolls from the base paper roll interpolation location to the standby line. Needless to say, it is possible to comprehensively and automatically control in accordance with a predetermined production plan by a computer-controlled automatic production management device (not shown), including the arrangement of No. 1 and collection of the base paper roll from the carry-out conveyor line.

In this embodiment, the carriage 13a reciprocates between the first stop position and the second stop position, and the carriage 13b moves.
Exclusively reciprocates between the second stop position and the third stop position,
The carriage 13c reciprocates between the third stop position and the fourth stop position, and the carriage 13d reciprocates between the fourth stop position and the first stop position. In addition, each carriage 13a, 13
When b, 13c, and 13d reciprocate between the two stop positions, one of the forward path and the return path is loaded with the base paper roll, and the other is moved in an empty state. For example, in FIG. 1, when the carriages 13a and 13b move with the base paper roll loaded, the carriages 13c and 13d move in an empty state, and conversely, when the carriages 13c and 13d move with the base paper roll loaded, the carriages 13a and 13b. Moves in an empty state. As a result, while one of the base paper trays is feeding, it does not affect the base paper roll being fed, and the loading and unloading of the base paper rolls for the replacement work of the base paper rolls for the other base paper tray can be performed in parallel. Can be done on a regular basis.

Further, the orientation of the base paper rolls in the standby row and the carry-out position is turned by 90 degrees along with the change of the traveling direction of the carriages while the base paper rolls are conveyed by the carriage on the loop orbit, so that a turntable or the like can be used. An efficient equipment layout can be realized without the need to install equipment.

FIG. 2 shows an example of the layout of a corrugated board manufacturing facility in which the base paper roll loading / unloading device according to the embodiment of the present invention is used for a mill roll stand. In FIG. 2, a first corrugator machine 25a and a second corrugator machine 25b, and a total of five mill roll stands 20a for supplying base paper to the respective corrugator machines for the production of a single-layer corrugated board sheet or a double-layer corrugated board sheet. , 20
b, 20c, 20d, and 20e form a sheet passing line FL directed downward in the drawing.

Each mill roll stand is provided with a pair of base paper hooks, and each of these mill roll stands has the same loop tracks 22a, 22b, 22c, as shown in FIG.
22d and 22e are provided, and four carriages are arranged in each loop track so that they can be moved synchronously by an endless drive chain.

In all the mill roll stands, the loading of the base paper roll by the base paper roll loading / unloading device is carried out by waiting lines 26a, 26b, 26c from the right side to the left side in the drawing.
26d and 26e are carried out by a feed conveyor device, whereby a relatively wide common space for loading and unloading work of raw paper rolls by an automatic crane is provided at the tail end portion of each waiting line facing the same direction. SP is secured.

Further, in all the mill roll stands, unloading of the base paper roll from the base paper roll carry-in / out device is
It is carried out upward in the drawing by a linear carry-out conveyor line 24 that passes through the carry-out positions of each loop track in common, and a common space S is provided at the end of the conveyor line 24.
A slope 27 for rolling and returning the base paper roll to P is provided, and the base paper roll or the air core that has been carried out can be carried out to a storage location or the like by a cargo handling operation by an automatic crane or the like in the common space SP.

Further, each mill roll stand has an automatic paper splicing device 30a, 30b, 30c, 30d, 30e, respectively.
Are provided, and an example thereof is shown in FIG.
In FIG. 3, a pair of base paper holders 1 of a mill roll stand
Reference numerals 1a and 11b are swing arm type swinging up and down, and can be lifted and lowered by pivoting both ends of the core of the raw paper roll. The automatic paper splicing device 30 is a paper splicing unit unit 3 suspended by a beam 31 passed above both base paper sheets.
The paper splicer unit 32 is provided with the second paper splicing unit 32, and at the time of paper splicing, the automatic paper splicing operation is performed by moving from the old base paper roll side to the new base paper roll side based on a command signal from the control panel 33. A loop track 12 is provided in a groove below the floor on the floor surface corresponding to the lowered position of each of the base paper racks 11a and 11b. In FIG. 3, the carriages 13b and 13d arranged on the loop track 12 replace the base paper rolls. It is stopped at the position.

[0045]

As described above, according to the present invention,
A plurality of carriages move in synchronization with each other on a loop track that goes around the mill roll stand, and each carriage moves between four stop positions defined on the loop track. It is possible to efficiently carry out the loading and unloading work and the replacement work in parallel within a short time, and to feed the raw paper from the mill roll stand to the corrugator machine in the standby line of the raw paper roll to the mill roll stand and the carry-out transfer path. Since it can be set in the direction orthogonal to the direction, there is no need to lengthen the layout of the equipment in the factory, and since the rolls of the base paper roll can be achieved at the same time during the loading / unloading operation, it is not necessary to provide extra equipment such as a turntable Space-saving, equipment-saving, efficient equipment layout in the factory, and one line of base paper roll standby line for truck efficiency It is possible to achieve the operation.

[Brief description of drawings]

1A to 1D are schematic explanatory views showing the configuration of a base paper roll loading / unloading device according to an embodiment of the present invention in the order of steps.

FIG. 2 is an explanatory diagram showing an example of a planar layout of a corrugated board manufacturing facility in which a base paper roll loading / unloading device according to an embodiment of the present invention is used in a mill roll stand.

FIG. 3 is an explanatory view of an example of an automatic paper splicing device attached to a mill roll stand, viewed in the axial direction of the raw paper roll in relation to the loop track of the raw paper roll loading / unloading device and the carriage.

FIG. 4 is a schematic explanatory view showing the configuration of a conventional base paper roll loading / unloading device in the order of steps.

[Explanation of symbols]

10: Mill roll stand, 11a, 11b: Base paper hanging, 12: Loop track, 13a, 13b, 13c, 13
d: dolly, 14: unloading conveyor line.

Claims (2)

[Claims] 1. A raw paper roll loading / unloading device for loading / unloading a raw paper roll, which is obtained by winding a raw paper in a coil shape, with respect to a mill roll stand for supplying the raw paper to a corrugated board manufacturing apparatus. It is equipped with a loop track that goes around the circumference and a plurality of carriages that can carry out reciprocating movement on the loop track by mounting a base paper roll, and each carriage has a predetermined first, second, third, and third positions on the loop track. 4 can be synchronously moved between the stop positions, the first stop position is a carry-in position for moving the base paper roll to be carried into the mill roll stand onto the carriage, and the second stop position is the mill roll stand. The base paper roll replacement position for one of the pair of rocking base paper covers, the third stop position is a carry-out position for unloading the base paper roll to be carried out from the mill roll stand, and the fourth position. The stop position is a base paper roll exchange position with respect to the other of the pair of swing base paper holders of the mill roll stand, and the orientation of the carriage at the first and third stop positions is the orientation of the carriage at the second and fourth stop positions. A base paper roll loading / unloading device that is substantially perpendicular to 2. A trolley arranged in a loop track,
A first carriage that reciprocates between a first stop position and a second stop position, a second carriage that reciprocates between a second stop position and a third stop position, and a third stop The third carriage exclusively reciprocates between the position and the fourth stop position, and the fourth carriage exclusively reciprocates between the fourth stop position and the first stop position. The stencil roll loading / unloading device according to claim 1, wherein the stencil roll carry-in / out device is configured to reciprocate in a synchronism manner while maintaining a mutual interval.