WO2009107439A1

WO2009107439A1 - Corrugated roll unit and method for carrying the same

Info

Publication number: WO2009107439A1
Application number: PCT/JP2009/051290
Authority: WO
Inventors: 水島一樹; 加藤利英; 新田隆司
Original assignee: 三菱重工業株式会社
Priority date: 2008-02-25
Filing date: 2009-01-21
Publication date: 2009-09-03
Also published as: JP2009196331A; KR20100074307A; JP5319932B2; KR101170244B1

Abstract

Disclosed is a corrugated roll unit (1) which can be inserted into a single facer or drawn-out therefrom easily without requiring a large space on the periphery of the single facer. The corrugated roll unit (1) is constituted by mounting a pair of corrugated rolls (3, 4) fixedly on a truck (2) having running wheels (12, 14), and is attached removably to the operating portion of a single facer, wherein two back up wheels (24) are attached in the vicinity of the rear wheel (14) with the running direction thereof directed toward the lateral direction of the truck (2) such that the attaching positions can be changed above or below the rear wheel (14), the back up wheels (24) are lowered below the rear wheel (14) when the corrugated roll unit (1) is rotating or moving in the lateral direction (e) so that the corrugated roll unit (1) is made to run by means of the front wheel (12) and the back up wheels (24), the back up wheels (24) are run in the direction reverse to that of the front wheel (12) when the corrugated roll unit (1) is rotating, and the interval between the front wheel (12) and the back up wheels (24) or the running speeds thereof are regulated so that the center (c) of rotation of the corrugated roll unit (1) can be set at an arbitrary position between the front wheel (12) and the rear wheel (14).

Description

Paper cardboard roll unit and its transport method

Technical field

INDUSTRIAL APPLICABILITY The present invention is applied to a single fuser for producing a single-sided corrugated paper by laminating a liner paper to a corrugated core paper that is passed through a pair of corrugated rolls each having a corrugated step on the outer peripheral surface. The present invention relates to a configuration of a corrugated roll unit and a transport method of the corrugated roll unit. Background art

In a single facer, in order to produce multiple types of corrugated steps (flutes), it is necessary to replace the upper and lower rolls built into the single facer according to the type of flutes to be produced. Alternatively, it is necessary to replace the upper and lower rolls periodically due to wear of the flute over time. Since the upper and lower rolls need to be adjusted with high accuracy in the interval between the upper and lower rolls, the upper and lower rolls are usually configured as a step roll unit that is integrally attached to the frame with the interval adjusted in advance. The step roll unit is incorporated into a single facer.

Patent Document 1 (Japanese Patent Publication No. 4-5 9 1 3 5) discloses an upper and lower roll changing device. In this exchange device, the upper and lower rolls are assembled into a frame, and a new unit unit is transported to a single fuser using a crane or other suspension device. Separated from the single facer in an integrated form and suspended by a separate suspension device. In addition, the new unit is incorporated into the single feather and the old unit is transported on a carriage placed near the single feather.

Patent Document 2 (Japanese Patent Application Laid-Open No. 2 00 0-3 3 6 5 8) discloses another exchange means for the upper and lower rolls. This means of exchange consists of a frame that is erected on a wheeled carriage L; the upper and lower rolls are rotatably mounted and fixed into a unit, and at the time of replacement, the stage roll unit is moved from the operating part of the single fuser body to the outside of the machine. Upper and lower row outside the machine The corrugated roll unit replaced with a new corrugated roll is transported to the working part and incorporated.

The means for exchanging the upper and lower rolls disclosed in Patent Document 1 requires a large hanging device such as a crane for hanging the unit in which the upper and lower rolls are incorporated in the frame, and the equipment cost is high. There is. In addition, there is a problem that it is not easy to position the unit when it is assembled in the operating part of the single fuser in a suspended state, and the replacement work takes a long time.

In addition, in the exchange means disclosed in Patent Document 2, a step roll unit formed by rotatably arranging upper and lower step rolls on a frame erected on a carriage is incorporated into an operating portion of a single facer or removed from a cinder fuser body. I am doing so. In this corrugated roll unit, the length of the upper and lower corrugated rolls is 2 to 3 m, so the distance between the front and rear wheels is about 3.5 to 4.5 m, and the weight reaches 7 to 8 t. .

The corrugated roll unit is self-propelled, and the single facer is a hot and humid environment where high temperature is used for heating the upper and lower corrugated rolls. Therefore, the drive device for the wheels attached to the corrugated roll unit is driven by an electric motor. An air motor is used. The front wheel is driven by an air motor to move forward or backward, and the direction of the front wheel is operated by a handle (manual operation) to change the direction.

When the direction is changed after completely pulling out the step roll unit from the single facer body, the center of rotation is the rear wheel, so the turning radius is the full length of the step roll unit 、, and the single face is used for turning. A large space is required around the server. Therefore, as shown in Fig. 5, in the conventional corrugated roll unit, the corrugated roll unit 1a extracted from the single facer s is turned with a large turning radius as shown by the arrow d, and the new corrugated roll unit ib is moved to the single facer. Even if it is incorporated in s, it is necessary to change the direction as indicated by arrow d 'and move it to the operating part of single facer s.

When inserting a corrugated unit into a single fan, it is necessary to align the insertion position and insert it straight from the right direction. In the conventional corrugated roll unit, the turning radius is large and the operability is difficult, so it is necessary to adjust the position or direction while switching over and over. Therefore, skill is required to insert into a single feather, corrugated roll It takes a long time to replace the unit.

In addition, as another means for transporting the corrugated roll unit, there is also a method in which the corrugated roll unit is floated with an air skater to reduce the friction with the floor surface and run manually.

However, the air skater method has a problem that the floor surface on which the corrugated roll unit travels needs to have a smooth surface to some extent, bouncing occurs due to displacement of the center of gravity during travel, and the behavior is not stable. In addition, it is necessary to move the corrugated roll unit manually, and the friction with the floor surface is low, and inertial running is performed due to inertia. There's a problem. Disclosure of the invention

In view of the problems of the prior art, the present invention improves the operability of the corrugated roll unit, thereby facilitating the insertion or removal of the corrugated roll unit from / to the single facer. The purpose is to eliminate the need for a large space for replacing the lower roll.

In order to achieve the above object, the corrugated roll unit of the present invention comprises:

In a step roll unit that is mounted on and fixed to a carriage having a traveling wheel, and a pair of step rolls is attached to and detached from a moving portion of a single feather.

There are two spare wheels that are mounted near the rear wheel with the traveling direction facing the side of the carriage and the mounting position can be changed above or below the rear wheel.

When the step roll unit is turning or moving in the lateral direction, the spare wheel is lowered below the rear wheel so that the step roll unit moves between the front wheel and the spare wheel.

When turning the corrugated roll unit, the spare wheel travels in the opposite direction to the front wheel and the distance between the front wheel and the spare wheel or the travel speed is adjusted so that the swivel center of the corrugated roll unit can be set arbitrarily between the front and rear wheels. It can be set to the position of.

In the step roll unit of the present invention, the two spare wheels are provided, and the front wheels and the spare wheels are caused to travel when turning or moving in the lateral direction. Therefore, it is possible to move in the horizontal direction, and when moving the corrugated roll unit from the front-rear direction to the horizontal direction, There is no need to rotate the corrugated unit.

Also, when turning the step roll unit, the spare wheel is made to travel in the opposite direction to the front wheel, and the turning center of the step roll unit is adjusted by adjusting the distance between the front wheel and the spare wheel or the travel speed thereof. It can be set at any position between the front and rear wheels.

As a result, the turning radius of the step roll unit can be set near the center of the step roll unit. For this reason, the turning radius can be made almost half as compared with the conventional case where the corrugated roll unit is turned around the rear wheel. Therefore, the space required for turning can be reduced and the operation of the step roll unit can be made easy.

In the step roll unit of the device of the present invention, the two spare wheels are mounted in such a manner that the mounting position in the longitudinal axis direction relative to the carriage can be changed, and the distance between the front wheel and the spare wheel and the travel speed thereof are adjusted to adjust the step roll unit. It can be configured to adjust the turning center position.

With a powerful configuration, it is easy to set the turning center of the corrugated roll unit, and it is possible to accurately set an arbitrary position between the front wheel and the rear wheel.

On the other hand, if the mounting position of the two spare wheels with respect to the carriage in the longitudinal axis direction is fixed and the turning center position of the step roll unit is adjusted by the difference in traveling speed between the front wheels and the spare wheels, the spare wheels The mounting structure can be simplified, and the mounting cost of the spare wheel can be reduced as compared with the above configuration.

In the corrugated roll unit of the present invention,

One or two second preparatory wheels are installed near the front wheels and fixed so that the traveling direction is in the lateral direction of the carriage and the mounting position can be changed above or below the front wheels. ,

When the step opening unit is turned or moved in the lateral direction, the spare wheel and the second spare wheel are caused to travel,

When the step roll unit turns, the spare wheel and the second spare wheel travel in opposite directions, and the distance between the spare wheel and the second spare wheel or the travel speed thereof is adjusted to adjust the travel speed of the step roll unit. The swivel center of the wheel at any position between the spare wheel and the second spare wheel. It may be configured to be settable.

In this case, the spare wheel and the second spare wheel may be configured so that the mounting position in the longitudinal axis direction relative to the carriage is fixed or movable. By adopting such a configuration, it becomes easier to set the turning center of the step roll unit when turning. In the corrugated roll unit of the present invention, as means for attaching the spare wheel to the carriage so as to be variable in the vertical direction, the spare wheel is attached to the carriage via an air spring made of a flexible container, and the air spring is attached to the air spring. The spare wheel may be configured to move up and down by supplying and discharging compressed air, and the carriage may be provided with a stagger that restricts the lower limit position of the spare wheel.

With such a configuration, vibrations and shocks received from the floor surface can be sucked by the air spring. In addition, since the lower limit position of the spare wheel can be regulated by the stagger, by holding the spare wheel at the lower limit position, it is possible to always have a certain difference in the vertical position between the rear wheels.

In the corrugated roll unit of the present invention, a handle connected to the front wheel is provided in front of the corrugated roll unit, and the handle and the front wheel are configured so that the directions of the handle and the handle are provided. In addition, an operating condition input section and a turning center display section for displaying the turning center of the step roll unit calculated from the inputted operating conditions during turning may be provided.

In a powerful configuration, the drive unit is connected to the front wheels, and the operator rolls the corrugated roll unit by manually operating the direction of the handle. In this case, an operating panel is provided on the handle, and when the operator inputs operating conditions to the operating panel, the turning center of the step roll unit corresponding to the operating conditions is calculated, and this turning center is displayed on the turning center display section. The

As a result, the center of rotation of the corrugated roll unit is clearly grasped by the operator who is transporting the corrugated roll unit, so that the corrugated roll unit can be transported more accurately.

Moreover, the transport method of the corrugated roll unit of the present invention is a transport method using the corrugated roll unit of the present invention,

When the corrugated roll unit turns or moves laterally, the spare wheel is placed below the rear wheel. Lower and run the corrugated unit with the front and spare wheels,

When moving the corrugated unit in the lateral direction, run the front wheel in the lateral direction with the front wheel and the spare wheel,

When turning the step roll unit, the front wheel and the spare wheel travel in opposite directions and the distance between the front wheel and the spare wheel or the travel speed is adjusted so that the turning center of the step roll unit is located between the front wheel and the rear wheel. The setting position is set.

Furthermore, in the method of the present invention, when replacing the step roll unit (old roll roll) to be replaced after use with a single facer and the new roll unit (new roll unit) to be newly attached to the single facer. In addition,

After moving the old stage roll unit incorporated in the moving part of the single fuser in the longitudinal direction and pulling it out from the working part of the single fuser, the new stage roll unit is connected to the old stage roll unit in parallel at the adjacent position,

The front and rear wheels of the old and new double-stage roll units are pointed sideways, and the new and old double-stage roll units are moved laterally together with the front and spare wheels, and the new-stage roll units are moved to the position facing the moving part of the single fan. ,

After that, it is recommended to disconnect the old and new roll unit and insert the new roll unit into the operating section.

As a result, the old roll unit and the new roll unit can be moved simultaneously, facilitating exchange work and shortening the exchange time. In this case, the front wheels and spare wheels of the old roll unit and the new roll unit are driven by the air motor, and at least the compressed air supplied to the air motors of the old and new double roll units is supplied from the same supply source when the old and new double roll units are connected. It is good to make it. As a result, the configuration of the compressed air supply source can be simplified, and the adjustment of the compressed air pressure supplied to the double stage unit is facilitated.

According to the corrugated roll unit of the present invention, in the corrugated roll unit in which a pair of corrugated rolls are mounted and fixed on a carriage having traveling wheels and are attached to and detached from the operating portion of the single feather, the traveling direction is in the vicinity of the rear wheels. With two spare wheels that are mounted facing the side of the carriage and the mounting position can be changed above or below the rear wheels. When the unit is turning or moving laterally, the spare wheel is lowered below the rear wheel so that the step roll unit runs between the front wheel and the spare wheel, and when the step roll unit is turned, the spare wheel is moved in the opposite direction to the front wheel. By adjusting the distance between the front wheel and the spare wheel or the traveling speed of the front wheel and the spare wheel so that the turning center of the step wheel unit can be set at an arbitrary position between the front wheel and the rear wheel. Can be moved in the horizontal direction, and the turning radius of the stepped roll unit can be reduced, so that the operability of the stepped unit becomes easy and the space around the single facer can be reduced.

Further, according to the transport method of the corrugated roll unit of the present invention, the spare wheel is lowered below the rear wheel when the corrugated roll unit of the present invention is used and the corrugated roll unit is turned or moved laterally. The roll unit is driven with the front wheel and the spare wheel.When the step roll unit is moved in the lateral direction, the front wheel is moved sideways with the front wheel and the spare wheel, and when the step roll unit is turned, the front wheel and the spare wheel are driven. By rotating the wheels in opposite directions and adjusting the distance between the front wheels and the spare wheel or the travel speed of these wheels, the turning center of the step roll unit is set to the set position between the front wheels and the rear wheels. The roll unit can be moved in the lateral direction, and the turning radius of the roll unit can be reduced. It is possible to reduce the space around Gurufuesa. Brief Description of Drawings

FIG. 1 is a front view of a corrugated roll unit according to the first embodiment of the present invention. FIG. 2 is a plan view of the corrugated roll unit according to the first embodiment.

FIG. 3 is a side view taken along line A_A in FIG.

FIG. 4 is a front view of the operation panel 10 according to the first embodiment.

FIG. 5 is an explanatory diagram of the conveying direction of the corrugated roll unit 1 according to the first embodiment.

FIG. 6 is an explanatory view schematically showing a modification of the first embodiment.

FIG. 7 is an explanatory diagram of a method for transporting the corrugated roll unit 1 according to the second embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the present invention unless otherwise specified.

(Embodiment 1)

A first embodiment of the corrugated roll unit of the present invention will be described with reference to FIGS. FIG. 1 is a front view of the transfer apparatus, FIG. 2 is a plan view, and FIG. 3 is a side view taken along the line AA in FIG. In FIG. 1 and FIG. 2, the corrugated roll unit 1 is formed by placing and fixing an upper stage door 3 and a lower stage door 4 on a carriage 2. A front support frame 5 and a rear support frame 6 are rotatably provided at the front and rear portions of the carriage 2 so as to rotatably support the upper roll 3 and the lower roll 4.

A rotating shaft 8 is rotatably supported by a bearing 7 at the front end of the carriage 2, and a handle 9 is fixed to the upper end of the rotating shaft 8 so as to be rotatable in the left-right direction (the direction of arrow a in FIG. 2). ing. The handle 9 is for the operator to hold the grip portion 9a of the handle 9 and point the step roll unit 1 in the moving direction. An operation panel 10 described later is attached to the grip portion 9a. At the lower end of the rotating shaft 8, one front wheel 1 2 with a cover 11 is provided. The front wheels 12 are driven by a drive device including an air motor (not shown). For this reason, the front wheels 12 are oriented in the same direction as the handle 9 in conjunction with the direction of the handle 9.

Two support frames 13 protrude from the rear support frame 6 to the rear at both ends of the rear support frame 6 in the carriage width direction, and the rear wheels 14 are rotatably mounted on the support frames 13, respectively. . The rear wheel 14 has no drive device and is driven by a step opening unit 1 driven by the front wheel 1 2.

The carriage 2 has a recess 21 for attaching a spare wheel 24 described later. In the recess 21, two air springs 2 2 made of a stretchable container are attached in the width direction of the carriage at a position near the rear wheel 14, and a frame 2 3 is attached to the lower part of the air spring 2 2. A spare wheel 24 is rotatably mounted through the wheel. In this embodiment, the spare wheel 24 is fixed at a fixed position. Compressed air is supplied to and discharged from the compressed air supply source (not shown) to the air spring 22, and the air spring 22 is expanded and contracted by the supply and discharge of the compressed air. The position of the spare wheel 24 slightly moves up and down by the expansion and contraction of the air spring 22. The air spring 22 may be composed of a flexible container, which is a superordinate concept of a stretchable container.

The rotating shaft 28 of the spare wheel 24 is disposed in the longitudinal direction of the carriage, and the spare wheel 24 is configured to be able to travel in the carriage width direction. A support bracket 25 protrudes downward from the recess 21 at a position adjacent to the spare wheel 24, and the air motor 26 is fixed to the support bracket 25. A gear 27 is attached to the output shaft of the air motor 26, and the gear 27 is disposed so as to mesh with the gear 29 attached to the rotary shaft 28 of the spare wheel 24. Thus, by driving the air motor 26, the spare wheel 24 can be driven to rotate. At least one of the spare wheels 24 is driven by such a drive mechanism.

Further, a stotno mechanism 3 1 is provided near the rear wheel 14 of the frame 2 3. The stagger mechanism 3 1 includes a bolt 3 2 planted in the recess 2 1 of the carriage 2 and a nut 3 3 screwed into the bolt 3 2 and a frame 2 3 positioned horizontally toward the rear wheel 1 4 side. It consists of a locking member 3 4 and a force fixed to each other. The locking member 3 4 is loosely fitted to the bolt 3 2 and is locked to the nut 3 3 to restrict its lowered position. The lower limit position of the spare wheel 24 can be adjusted by adjusting the screwing position of the nut 3 3 with respect to the bolt 3 2.

In addition, at the lower end of the front support frame 5, a stagger 15 is attached to both ends of the carriage width direction to stop further tilting when the corrugated roll unit 1 is tilted more than a predetermined amount in the lateral direction.

In this embodiment having such a configuration, a method for transporting the corrugated roll unit 1 according to this embodiment will be described with reference to FIG. In Fig. 5, when replacing the old roll unit 1a that has been installed in the single facer s and has been operated until now, the old roll unit 1a is first transported in the direction of the arrow b. Then pull out from the single facer s. Thereafter, compressed air is supplied to the air spring 22 from a compressed air supply source (not shown), and the spare wheel 24 is lowered.

Then, as shown in Fig. 1, the rear side of the corrugated roll unit 1 is supported by the spare wheel 24. The rear wheels 1 4 should be buoyant from the floor surface f. The floating amount t of the rear wheel 14 may be about 10 to 2 O mm, for example. Thus, the corrugated roll unit 1 is supported by one front wheel 1 2 and two spare wheels 2 4. Thereafter, the operator operates the handle 9 to direct the front wheels 12 in the cart width direction, thereby transporting the corrugated roll unit 1 in the lateral direction (direction of arrow e in FIG. 5).

By operating in this way, the corrugated roll unit 1a can be transported in the lateral direction without swiveling, so that there is no need to provide a swiveling space around the single facer s.

Next, in this embodiment, a conveying method for turning the corrugated roll unit 1 with a small turning radius will be described. FIG. 4 shows the operation panel 10 attached to the grip 9 a of the handle 9. In FIG. 4, the operation panel 10 has various speeds such as the speed of the front wheels 1 2 and the spare wheels 2 4, the space around the Sing-no-refuser s, or the concave / convex state of the floor surface f around the Sing-no-refuser s. An operation condition input section 1 0 0 for inputting operation conditions and a rotation center display section 1 0 1 for displaying the rotation center c of the roll unit 1 automatically calculated based on the input operation conditions are arranged. Yes.

The turning center c is determined based on the traveling speeds of the front wheels 12 and the spare wheels 24 traveling in opposite directions and the positions of the front wheels 12 and the spare wheels 24. That is, the distance 1 from the front wheel 1 2 to the turning center c and the distance 1 ₂ from the spare wheel 24 to the turning center c can be calculated from the traveling speeds of the front wheels 1 2 and the spare wheels 2 4. ,

In this way, the calculated position of the turning center c is automatically displayed on the turning center display section 101. In the turning center display section 1 0 1, the contour of the step roll unit 1 is shown, and the turning center c is displayed at the calculated position in the contour. When the turning center c is located at the center position of the step roll unit 1, the turning radius of the step roll unit 1 can be minimized.

In FIG. 5, at the position where the step roll unit 1 _a is pulled out from the single facer s, the operator operates the operation panel 10 to turn the step roll unit 1 a. As a result, the corrugated roll unit 1 a is swung to the position indicated by la ′ about the turning center c set according to the operating conditions. Then, transport the corrugated roll unit 1 in the direction of arrow e. When installing a new roll unit 1b into the single facer s, as shown in the figure, drive the front wheel 1 2 and rear wheel 14 to the position where the new roll unit 1b is installed in the single facer s. Transport. Next, the spare wheel 2 4 is positioned below the rear wheel 14, and the new single facer 1 b is supported on the floor surface f by the front wheel 1 2 and the spare wheel 2 4. Thereafter, the step roll unit 1 b is turned 90 degrees with the minimum turning radius by the same operation as described above, and is directed to the single facer s side. Then, the corrugated roll ib is incorporated into the single facer s.

As described above, according to this embodiment, the step roll unit 1 can be moved laterally without moving from the front-rear direction, and can be swung with the minimum turning radius. The posture control of the corrugated roll unit 1 becomes easy. Therefore, the operability of the corrugated roll unit 1 is facilitated, and the corrugated roll unit 1 can be transported by one operator, and a large space around the single facer s is not required for transporting the corrugated roll unit 1.

In addition, the lower limit position of the spare wheel 2 4 can be regulated by the stno mechanism 3 1, and the impact received from the floor surface f can be received and absorbed by the air spring 2 2, so that it cannot be transmitted to the main body of the step roll unit 1. . Further, the lower limit position of the spare wheel 24 can be adjusted by adjusting the screwing position of the nut 3 3 to the bolt 3 2. In addition, the turning center c is automatically calculated by inputting the operating condition to the operation panel 10 and the calculated turning center c is displayed on the turning center display section 1 0 1. Can be transported easily and accurately.

In addition, the carriage 2 is provided with a recess 21, and the spare wheel 24, the air motor 26, and the stagger mechanism 31 are attached to the recess 21, so these devices can be compactly integrated into the recess 21.酉 S can be placed. Therefore, the corrugated roll unit 1 can be incorporated into the operating portion of the single facer s without a large size.

Furthermore, since the horizontal roll unit 1 is prevented from tilting in the lateral direction by the stopper 15, the roll unit 1 can be prevented from falling down.

In this embodiment, the spare wheel 2 4 is fixed to the carriage 2 near the rear wheel 1 4. However, as a modification of this embodiment, the spare wheel 24 can be moved in the longitudinal direction of the carriage with respect to the carriage 2. You may attach to. In this way, the turning center c can be determined by the two parameters of the position of the spare wheel 24 and the speed of the front wheel 12 and the spare wheel 24. Therefore, the position of the turning center c can be set more accurately. it can.

Furthermore, in addition to the spare wheel 24, one or two second spare wheels are provided closer to the front wheel 12 and the spare wheel 24 and the second spare wheel when the step roll unit 1 moves laterally or turns. The step roll unit 1 may be caused to travel. FIG. 6 is an explanatory diagram schematically showing this modification. In FIG. 6, in addition to the spare wheel 2 4 provided near the rear wheel 14, two second spare wheels 3 5 are provided at the positions near the front wheel 1 2 and at both ends in the cart width direction. .

The second spare wheel 35 has the same configuration as that of the spare wheel 24, and its vertical position can be varied, and its traveling direction is directed in the cart width direction. When the stage roll unit 1 is moved laterally or turned, the spare wheel 2 4 and the second spare wheel 35 are moved down from the front wheel 1 2 and the rear wheel 1 4 so that the spare wheel 2 4 and the second spare wheel 1 are lowered. Support the roll unit 1 with the wheels 3 and 5. According to the configuration, the roll unit 1 can be supported by the two spare wheels 2 4 and the second spare wheel 3 5 when moving laterally or turning, so that the roll unit 1 can be stabilized. Can be run.

Instead of providing two second spare wheels 35, only install one second spare wheel 3 5 'at the center position near the front wheel 12 as shown in Fig. 6. Also good. (Embodiment 2)

Next, a second embodiment of the present invention will be described with reference to FIG. In FIG. 7, in this embodiment, a corrugated roll unit 1 having the same structure as that of the first embodiment is used. When replacing the old roll unit 1a that is installed in the single fuser s and used for operation, first, pull the old roll unit 1a from the operating part of the single facer s in the direction of arrow b.

Next, transport the new roll unit 1b in the horizontal direction (arrow e direction) and bring it closer to the old single facer 1a, and next to the old single facer 1a, against the old single facer 1a. Line up in parallel.

Next, the old and new double roll units are connected with the mechanical connector 42. And with the old and new double-stage roll unit, the front motor 1 2 and spare wheel 2 4 air motor and air spring 2 2 A single compressed air source 40 is connected by a hose 41. Compressed air is supplied from a single compressed air supply source 40 to the old and new two-stage roll units that require compressed air.

In this embodiment, the old and new two-stage roll units 1a and 1b are mechanically connected in parallel and conveyed in the direction of arrow e. When the new roll unit l b reaches the position where the single facer s is assembled, the conveyance is stopped. After that, release the connection of both roll units and carry out only the old roll unit 1a. In this embodiment, the old and new double-stage roll units can be transported together at the same time, so the transport time can be shortened.

In addition, since the compressed air is supplied from the single compressed air supply source 40 to the old and new double-stage roll units, the operation becomes easy and the equipment cost can be reduced. Industrial applicability

According to the present invention, when the upper and lower rolls of a single facer are replaced for reasons such as specification change or repair, it is easy to insert or remove the step roll unit from or to the single facer. Wide space and space can be eliminated in the surrounding area.

Claims

The scope of the claims

1. In a step roll unit, a pair of corrugated rolls are mounted and fixed on a carriage having traveling wheels, and are attached to and detached from an operating part of a single facer.

When turning the corrugated roll unit, the spare wheel travels in the opposite direction to the front wheel and the distance between the front wheel and the spare wheel or the travel speed is adjusted so that the swivel center of the corrugated roll unit can be set arbitrarily between the front and rear wheels. A stage ronor unit, characterized in that it can be set to the position.

2. Mount the two spare wheels on the carriage so that the longitudinal mounting position can be changed, and adjust the distance between the front wheel and the spare wheel and the travel speed to adjust the turning center position of the step roll unit. The corrugated roll unit according to claim 1, wherein the corrugated roll unit is configured as described above.

3. The mounting position of the two spare wheels with respect to the carriage in the longitudinal axis direction is fixed, and the turning center position of the step roll unit is adjusted by the difference in traveling speed between the front wheel and the spare wheel. The corrugated roll unit according to claim 1.

4. One or two second spare wheels are installed near the front wheels and fixed so that the traveling direction is in the lateral direction of the carriage and the mounting position can be changed above or below the front wheels. ,

When the step roll unit turns, the spare wheel and the second spare wheel travel in opposite directions, and the distance between the spare wheel and the second spare wheel or the travel speed thereof is adjusted to adjust the travel speed of the step roll unit. 2. The step opening unit according to claim 1, wherein the turning center is configured to be set at an arbitrary position between the spare wheel and the second spare wheel.

5. The spare wheel is attached to the carriage via an air spring made of a flexible container, and the empty wheel is 2. The spare wheel is configured to be movable in the vertical direction by supplying and discharging compressed air to an air spring, and a stagger for regulating a lower limit position of the spare wheel is provided on the carriage. Corrugated roll unit.

6. A handle connected to the front wheel is provided in front of the step roll unit, and the direction of the handle and the front wheel is linked.

An operation panel is provided on the handle, and an operation condition input section and a rotation center display section for displaying the turning center of the step roll unit calculated from the inputted operation conditions at the time of turning are provided on the operation panel. A corrugated roll unit as claimed in any one of claims 1 to 5.

7. In the method for transporting corrugated roll units according to claim 1,

When the corrugated roll unit turns or moves laterally, the spare wheel is lowered below the rear wheel so that the corrugated roll unit runs between the front wheel and the spare wheel.

When turning the step roll unit, the front wheel and the spare wheel travel in opposite directions and the distance between the front wheel and the spare wheel or the travel speed is adjusted so that the turning center of the step roll unit is located between the front wheel and the rear wheel. A method for transporting corrugated roll units characterized by being set to the set position.

8. After moving the old roll unit incorporated in the moving part of the single faser in the longitudinal direction and pulling it out from the working part of the single feather, the new roll unit is arranged in parallel with the old roll unit in the adjacent position. Connected side by side,

The front and rear wheels of the new and old two-stage roller units are pointed sideways, and the new and old two-stage outlet units are moved laterally together with the front and spare wheels, and the new-stage roll unit faces the operating part of the single fuser. Move it to the position

8. The method for transporting a corrugated roll unit according to claim 7, wherein the new roll roll unit is then disconnected and the new roll unit is inserted into the operating section.

9. The front and spare wheels of the old and new double-stage roll units are driven by an air motor, and at least the old and new double-stage roll unit air motors are connected when the old and new double-stage roll units are connected. The method according to claim 8, wherein compressed air to be supplied to is supplied from the same supply source.