JP2001200832A - Balancing roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a balancing roll capable of smoothly tilting in all directions, being easily installed and removed, and being inexpensively provided. SOLUTION: The balancing roll holds a cylindrical outer ring body through an elastic body to a shaft internally installed in the outer ring body so that the outer ring body can be turned. Further, the longitudinally center part of the shaft is held by the balancing roll so that the shaft can be freely tilted in relation to the outer ring body, and the outer ring body is adapted to be able to tilt in all directions in relation to the shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balancing roll which holds an outer race so that it can be tilted in any direction with respect to a shaft.

[0002]

2. Description of the Related Art A corrugated cardboard is formed by sandwiching a core with a liner. In order to form a corrugated cardboard without warpage, the corrugated cardboard is conventionally manufactured by drying the liner to a constant moisture content.

[0003] If both liners to be sandwiched have a constant water content, warping does not occur or hardly occurs in the step of forming corrugated cardboard.

In the drying process of the liner, the liner is deformed, and the deformation mainly occurs in the width direction of the liner. If the deformed liner is passed through the heating roll while being guided by the guide roll, a portion that does not adhere to the heating roll is generated and cannot be dried to a certain amount of water, so a so-called wrap roll that moves up and down is used as the guide roll. ing.

[0005] This wrap roll holds both ends of a shaft contained in an outer race through an air pressure cylinder, and when the liner is deformed and pressure is applied to the outer race, the outer race rises in the direction of the air cylinder. It is formed as follows.

[0006]

However, since the above-mentioned wrap roll is held via an air cylinder, there is a problem in that it is extremely troublesome to attach and detach the wrap roll and the cost is high.

[0007] In addition, since the roll can only tilt in a predetermined direction determined by the setting, it is not easy to respond to the difference in the drying time depending on the type of corrugated cardboard.

That is, since the conventional wrap roll moves up and down only in a set direction, if the wrap roll is moved in the circumferential direction of the heating roll to change the drying time, the direction in which the corrugated cardboard is guided is changed. Although it changes, the conventional wrap roll cannot cope with the change.

Therefore, when changing the drying time using a conventional wrap roll, the wrap roll is moved in the circumferential direction of the heating roll, the air cylinder is removed, and the wrap roll is moved up and down in a direction for guiding the cardboard. This was a very cumbersome task. Therefore, there was a problem that the working efficiency was not improved.

Further, even when the liner is guided in a set direction, if the liner is warped, the liner is finely vibrated and does not tilt smoothly, and a complicated warp cannot be taken at all. Was.

Further, depending on the type of the liner, it is necessary to change the pressing force of the wrap roll, and this was performed by changing the air pressure. However, this adjustment required skill and was extremely troublesome.

The invention described in claim 1 of the present invention is
The object of the present invention is to provide a balancing roll that can be smoothly tilted in all directions, can easily guide many types of liners, etc., and can be easily attached and detached and can be provided at low cost. And

Another object of the present invention is to provide a balancing roll in which the pressing force of the roll can be easily adjusted in addition to the above objects.

[0014]

According to the first aspect of the present invention, in accordance with the above object, the outer ring body is rotatable via an elastic body on a shaft provided inside the cylindrical outer ring body. In addition to the holding, the center of the shaft in the length direction is held so that the shaft can be freely tilted with respect to the outer race.

[0015] In short, the gist of the present invention is that the central portion of the shaft is held so as to be able to freely tilt with respect to the outer race body, so that the shaft can be tilted smoothly in all directions. Heretofore, rolls holding the center of the shaft so as to be able to freely tilt with respect to the outer race have not been commercially available, and no such idea has been known at all.

Further, the invention according to claim 4 is characterized in that, in addition to the above configuration, a configuration in which the outer race body is elastically held at both ends of the rotating shaft via pneumatic holders is added.

Next, an embodiment of the present invention will be described with reference to the drawings.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention.
1 shows an example in which both ends of an outer race 4 are elastically held via a pneumatic holder 2 and a bearing 3, and a coaxial central portion is tiltably held by a self-aligning bearing 5. Since both ends of the shaft 1 are fixed, the outer race 4 can be freely rotated by the bearings 3 and 5.

The self-aligning type bearing 5 comprises an inner ring 6, rolling elements (balls and rollers) 7 and an outer ring 8, and the inner ring 6 is fixed by screwing a screw 9 into the shaft 1.

The outer ring 8 is tightly fixed in a ring-shaped groove of the connecting ring 10. The outer periphery of the connecting ring 10 is formed into a ring-shaped projection 11 at the center, and the outer ring body 4 is divided into two parts.
a and 4b are tightly fitted and fixed to both sides of the connection ring 10 so as to sandwich the protrusion 11, respectively. It is becoming.

The connecting ring 10 is divided into rings 10a and 10b of the same shape at the center, and the two are combined to form an outer ring 8a.
The ring 10a and the ring 10b are formed so as to be integrally fixed by screwing a bolt 12 so that the outer ring 8 is firmly clamped. Has become.

The reason why the connecting ring 10 is divided as described above is to make it easier to pinch and fix the outer ring 8, but this is not always necessary.

Bearings 3 are fitted and fixed to both ends of the outer race 4, and an elastically deformable pneumatic holder 2 is interposed between the bearing 3 and the shaft 1. Therefore, when a non-uniform force is applied to the outer race 4, the outer race 4 tilts with respect to the shaft 1 against the force of the pneumatic holder 2.

In the above embodiment, the bearing 3 is provided with an inner ring,
It is composed of a rolling element and an outer ring, but this is not particularly limited as long as it holds the outer ring such as a thrust bearing so that it can freely rotate.

Since the pneumatic holder 2 is an air bag filled with air, by adjusting the amount of air to be filled, it is possible to adjust the degree of elastic deformation with respect to the applied force, that is, the pressing force. Can be.

In the above embodiment, the pneumatic holder 2 is used, but it is not particularly limited as long as it can be elastically deformed. For example, an elastic body such as a spring or rubber can be used. However, it is preferable to use a pneumatic holder because the elastic force can be freely adjusted depending on the amount of air.

The self-centering type bearing 5 is fixed to the center of the shaft 1, but if it is substantially at the center, it need not be completely at the center.

The balancing roll of the present invention is particularly suitable for use in a fixed manner such that it can rotate around a heating roll. Irrespective of the position of the balancing roll around the heating roll, the deformed cardboard can be urged to be constantly pressed against the heating roll, and the heating time of the corrugated bar or the like can be freely adjusted without any trouble. Because.

As described above, when the balancing roll is fixed so as to be rotatable around the heating roll, the contact time of the liner or the like with the heating roll can be changed. Therefore, liners having different drying times can be dried without any trouble.

In order to fix the balancing roll so as to be rotatable around the heating roll, both ends of the shaft 1 are fixed by arms, and the arm is fixed so that the outer race can be turned around the outer periphery of the heating roll. Just do it.

The balancing roll of the present invention is particularly suitable for use in a step of drying a liner of a corrugated cardboard to a constant water content or forming a corrugated cardboard by sandwiching a core with a liner.

However, it can be used for any purpose as long as the purpose is to urge a long paper or a plastic sheet or the like to be constantly pressed against the roll and to guide it.

According to the present invention, since the central portion of the shaft is held so as to be able to freely tilt with respect to the outer race, the shaft can always be freely urged in the direction of the received force, and the liner and the like can be used. Can be always guided so as to be in close contact with a heating roll or the like.

When a pneumatic holder is used as the elastic body, the pressing force and the urging force of the balancing roll can be freely adjusted only by adjusting the amount of air.

[0035]

As described above, the first aspect of the present invention is as follows.
According to the invention described in the above, even if a force is applied from any direction, the roll tilts against the force, so that different types of liners and the like can be easily dried,
It is easy to attach and detach, and can be provided at a low cost.

According to the fourth aspect of the present invention, in addition to the above effects, according to the type of the liner or the like to be guided,
The advantage that the pressing force of the roll can be easily adjusted is obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Shaft 2 ... Pneumatic holder (elastic body) 3 ... Bearing 4 ... Outer ring body 5 ... Self-aligning type bearing 6 ... Inner ring 7 ... Rolling body 8 ... … Outer ring 10 …… Connection ring (connection member)

Claims (8)

[Claims] An outer ring body is rotatably held on a shaft contained in a cylindrical outer ring body via an elastic body, and a center portion in a longitudinal direction of the shaft is fixed to the shaft with respect to the outer ring body. Characterized in that the balancing roll is held so as to be able to freely tilt. 2. The balancing roll according to claim 1, wherein a central portion in the length direction of the shaft is held by a self-aligning type bearing. 3. The balancing roll according to claim 2, wherein an inner race of the self-centering bearing is fixed to the shaft, and an outer race is fixed to the outer race through a connecting member. 4. The balancing roll according to claim 3, wherein the outer race body is elastically held at both ends of the shaft via a pneumatic holder and a rotating body. 5. The balancing roll according to claim 4, wherein a bearing is interposed between the pneumatic holder and the outer race body as the rotating body to hold the outer race body in a freely rotatable manner. 6. The outer ring body is divided at a central portion in the length direction, and the divided outer ring bodies are fitted and fixed to both sides of a connecting member which grips and fixes the outer ring of the self-aligning type bearing. The balancing roll according to any one of claims 1 to 5, comprising: 7. The connecting member has a divided shape, and an outer ring of the self-aligning bearing is fixedly held in a ring-shaped concave groove formed by connecting the divided connecting members. A balancing roll according to item 1. 8. Both ends of the shaft are fixed to arms, respectively.
The balancing roll according to any one of claims 1 to 7, wherein the arms are fixed so that the outer race body can rotate around an outer periphery of the heating roll.