JPH11207770A - Calender device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase number of banks without making an equipment larger or increasing the cost of the equipment. SOLUTION: Small diameter kneading rolls 11-17 are contact disposed on the outer periphery of a large diameter main roller 10, and respective banks 18-24 are formed between the main roll 10 and respective kneading rolls 11-17, while a finishing roll 60 having the diameter larger than those of the kneading rolls 11-17 is contact disposed on the downstream side of a large kneading roll. 17, and a bank 26 is formed between the main roll 10 and the finishing roll 25. Also at least the kneading rolls 14-17 disposed on the downstream side are set to be movable close to and away from the main roll 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a calendar device, and more particularly to a calendar device capable of increasing the number of banks without increasing the size of the equipment and increasing the cost of the equipment. .

[0002]

2. Description of the Related Art A calender has been conventionally used to make a sheet of resin or the like.

As shown in FIG. 2, the above-mentioned conventional calendering apparatus combines a plurality of calender rolls 1 to 4 having the same diameter so as to come into contact with each other in order.
Banks 5 between 2 and 2, 3 and 3 and 4 respectively
7 is formed.

In FIG. 1, reference numeral 8 denotes a resin material supplied to the first bank 5, and reference numeral 9 denotes a molded resin sheet.

According to the hanging configuration, the calendar rolls 1,
The molten resin material 8 is supplied to the bank 5 formed between the two, and the calender rolls 1 to 4 are rotated in the direction indicated by the arrow in the drawing, so that the resin material 8 is first kneaded in the bank 5. Is rolled between the calender rolls 1 and 2 and then kneaded in the bank 6 and rolled between the calender rolls 2 and 3, further kneaded in the bank 7 and rolled between the calender rolls 3 and 4. , Sheet 9
Becomes

[0006]

However, the above-mentioned conventional calender has the following problems.

That is, it is generally known that in a calendar device, the quality of the sheet 9 can be improved by increasing the number of banks 5 to 7 and increasing the number of times of kneading with the resin material 8; Since the calender rolls 1 to 4 were combined, if we tried to increase the number of banks, the number of calender rolls with the same diameter would be increased,
Accordingly, there has been a problem that the equipment is increased in size and the equipment cost is increased.

The present invention has been made in consideration of the above circumstances, and has as its object to provide a calendar device capable of increasing the number of banks without increasing the size of the equipment and increasing the cost of the equipment.

[0009]

According to the present invention, a plurality of small-diameter kneading rolls are arranged in contact with the outer periphery of a large-diameter main roll to form a bank between the main roll and each kneading roll. A finishing roll having a larger diameter than the kneading roll is arranged in contact with the downstream side of the final kneading roll to form a bank between the main roll and the finishing roll, and at least a kneading roll arranged downstream is provided. The present invention relates to a calender device characterized in that the roll can move close to and away from the main roll.

According to the above means, the following effects can be obtained.

A molten resin material is supplied to a bank formed between a large-diameter main roll and a small-diameter kneading roll positioned at the uppermost stream, and the main roll, each of the kneading rolls and the finishing roll are respectively rotated. .

Then, the resin material is kneaded in a bank formed between the main roll and each kneading roll, and finally formed between the main roll and a finishing roll having a larger diameter than the kneading roll. While being kneaded in a bank, it is rolled between a main roll and a finishing roll to form a sheet.

As described above, according to the present invention, a plurality of small-diameter kneading rolls for the purpose of kneading only are arranged in contact with the outer periphery of the large-diameter main roll, and the main roll and each kneading roll are interposed between the main roll and each kneading roll. A bank is formed, and a finishing roll having a diameter larger than the kneading roll is arranged in contact with the downstream side of the final kneading roll for kneading and finishing so that a bank is formed between the main roll and the finishing roll. Accordingly, the number of banks can be increased without increasing the size of the equipment and increasing the cost of the equipment.

Furthermore, the number of banks is changed by moving at least the small-diameter kneading roll arranged on the downstream side toward and away from the main roll, so that the type of the resin material and the type of the resin material are obtained. It is possible to make the apparatus correspond to the sheet quality or the like.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.

A plurality of small-diameter kneading rolls 11 to 17 are arranged in contact with the outer periphery of the large-diameter main roll 10, and a bank 18 to 2 is provided between the main roll 10 and each of the kneading rolls 11 to 17.
4 is formed.

A finishing roll 25 having a diameter larger than that of the kneading rolls 11 to 17 is arranged in contact with the downstream side of the final kneading roll 17 to form a bank 26 between the main roll 10 and the finishing roll 25.

Furthermore, at least the small diameter kneading rolls 14 to 17 arranged on the downstream side are supported by the main roll 10 via actuators 27 to 30 such as cylinders so as to be able to approach and separate from the main roll 10.

In the figure, reference numeral 31 denotes a resin material supplied to the first bank 18, and 32 denotes a molded resin sheet.

Since the kneading rolls 11 to 17 have a small diameter, there is a possibility that the kneading rolls 11 to 17 may be bent. However, in order to prevent this, the kneading rolls 11 to 17 may be crown rolls,
A crown variable roll or kneading rolls 11 to 17,
You may make it support with a backup roll.

Next, the operation will be described.

The molten resin material 31 is supplied to the first bank 18 formed between the large-diameter main roll 10 and the small-diameter kneading roll 11 located at the uppermost stream.
0, each of the kneading rolls 11 to 17 and the finishing roll 25 are rotated in the directions indicated by the arrows in the figure.

Then, the resin material 31 is kneaded in the bank 18 formed between the main roll 10 and the kneading roll 11, and then in the bank 19 formed between the main roll 10 and the kneading roll 12. Kneaded, then kneaded in a bank 20 formed between the main roll 10 and the kneading roll 13, then kneaded in a bank 21 formed between the main roll 10 and the kneading roll 14, The main roll 10 and the kneading roll 1
5 are kneaded in the bank 22 formed between the main roll 10 and the kneading roll 16.
3 and then kneading in a bank 24 formed between the main roll 10 and the kneading roll 17, and finally with the finishing roll 25 having a diameter larger than the main roll 10 and the kneading rolls 11 to 17. While being kneaded in the bank 26 formed therebetween, it is rolled between the main roll 10 and the finishing roll 25 to form a sheet 32.

In the case of the present invention, the sheet 32 being formed is
Must be guided along the main roll 10, but since the sheet 32 being formed has a property that it adheres to the faster peripheral speed, the By slightly increasing the peripheral speed of the main roll 10, it is possible to reliably guide the sheet 32 being formed along the main roll 10. By changing the peripheral speeds of the kneading rolls 11 to 17 and the main roll 10, an effect of improving kneading can be obtained.

Similarly, since the sheet 32 being formed has a property of adhering to the lower temperature, the kneading rolls 11 to 11 are formed.
By slightly lowering the temperature of the main roll 10 with respect to the temperature of 17, the sheet 32 being formed can be reliably guided along the main roll 10.

As described above, according to the present invention, a plurality of small-diameter kneading rolls 11 to 17 for the purpose of kneading only are arranged in contact with the outer periphery of the large-diameter main roll 10 so as to be in contact with the main roll 10 and each kneading roll. Banks 18 to 24 between rolls 11 to 17, respectively
Is formed, and only one finishing roll 25 having a diameter larger than that of the kneading rolls 11 to 17 is arranged in contact with the downstream side of the final kneading roll 17 for kneading and finishing. Since the banks 26 are formed therebetween, the number of banks can be increased without increasing the size of the equipment and increasing the cost of the equipment.

Further, according to the present invention, at least the small-diameter kneading rolls 14 to 17 arranged on the downstream side are moved toward and away from the main roll 10 via actuators 27 to 30 such as cylinders. As a result, bank 21
Since the number of ~ 24 is changed, the type of the resin material 31,
The apparatus can be adapted according to the quality of the sheet 32 to be obtained.

It should be noted that the present invention is not limited to only the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention.

[0030]

As described above, according to the calendar device of the present invention, an excellent effect that the number of banks can be increased without increasing the size of the equipment and increasing the cost of the equipment can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an example of an embodiment of the present invention.

FIG. 2 is a schematic side view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main roll 11-17 Kneading roll 18-24 Bank 25 Finishing roll 26 Bank 31 Resin material 32 Sheet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shogo Umezawa 1 Shinnakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawashima-Harima Heavy Industries, Ltd. (72) Inventor Yoshiharu Shitara Shinnaka, Isogo-ku, Yokohama-shi 1 Haramachi Ishi Kawashima Harima Heavy Industries, Ltd.

Claims (1)

[Claims] 1. A plurality of small-diameter kneading rolls are arranged in contact with the outer periphery of a large-diameter main roll to form a bank between the main roll and each of the kneading rolls, and the downstream side of the final kneading roll. A finishing roll having a diameter larger than the kneading roll is arranged in contact with the kneading roll to form a bank between the main roll and the finishing roll, and further, at least, a kneading roll arranged on the downstream side,
A calendar device characterized in that it can move toward and away from the main roll.