JPH0777737B2 - Calendar - Google Patents

Description

TECHNICAL FIELD The present invention relates to a calendar.

[Prior Art] In a conventional calender, a plurality of calender rolls are combined to form a plurality of rolling passes, and a synthetic resin film is manufactured by rolling a raw material of the synthetic resin over a plurality of stages in the rolling pass. It was done like this.

[Problems to be Solved by the Invention] However, the number of rolling passes required is different depending on the type of the raw material of the synthetic resin or the characteristics such as the thickness of the synthetic resin film to be produced. Since it is not possible to change the number of rolling passes, it is only possible to produce a film of a specific synthetic resin, and therefore when producing a film of synthetic resin of different types, multiple calenders are required, It required equipment costs and a large installation area.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a calendar capable of changing the number of rolling passes.

[Means for Solving the Problems] In the present invention, a take-off roll device is arranged downstream of a calender body in which a plurality of calender rolls are combined to form a plurality of rolling passes, and a film rolled by the calender body is drawn. In the calendar configured to roll, the film take-off position with respect to the calendar body of the take-off roll device is reciprocally moved between the final pass exit side position and the preceding pass exit side position so that the number of passes can be changed to roll the calendar body. It is a calendar that allows you to change the number of passes.

[Operation] Therefore, in the present invention, the number of rolling passes of the calender body can be changed by changing the film take-up position with respect to the calender body of the take-off roll device.

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

1 and 2 are explanatory views of an embodiment of the present invention.

Six calender rolls 1 to 6 are combined so that at least the most downstream calender rolls 5 and 6 are arranged vertically above and below to form a calender body having five stages of rolling passes 7 to 11. A take-off roll device 17 in which a plurality of take-off rolls 12 to 16 are combined is provided movably in the vertical direction downstream of the calender body, and cylinders 18, 19 with rods oriented in the vertical direction are attached to the take-off roll device 17.

Reference numeral 20 is a synthetic resin raw material, and 21 is a synthetic resin film.

When the calender is used in 5 passes, as shown in FIG. 1, the cylinders 18 and 19 are contracted, the take-off roll device 17 is lowered, and the calender roll 6 is positioned on the side of the final calender roll 6. When the raw material 20 is supplied between the rolls 1 and 2 and the calender rolls 1 to 6 are driven, the raw material 20 is rolled one after another in the rolling passes 7 to 11 to form a film 21, which is taken off from the calender roll 6 by a take-off roll device. Taken over by 17.

Next, when the calender is used in four passes, as shown in FIG. 2, the cylinders 18 and 19 are extended and the take-off roll device 17 is lifted to be positioned on the side of the calender roll 5, and then the calender roll is moved. Supply raw material 20 between 1 and 2,
When the calender rolls 1 to 6 are driven, the raw material 20 is successively rolled in the rolling passes to 10 to form a film 21, and the film 21 is taken up from the calender roll 5 to the take-off roll device 17 without being rolled in the rolling pass 11. To be

In this way, the take-off roll device 17 can be moved up and down so that the film 21 take-up position from the calendar main body can be changed, so that the number of rolling passes can be changed, and accordingly, different types of films can be formed by one calender. twenty one
Can be manufactured.

FIGS. 3 and 4 are explanatory views of another embodiment of the present invention, in which the cylinder 22 with the rod oriented vertically is attached only to the upstream end of the take-off roll device 17 and the downstream of the take-off roll device 17. By providing a rotation center near the side end and moving the upstream end of the take-off roll device 17 up and down to change the take-up position of the film 21, the number of rolling passes can be similarly changed. I am able to do it.

5 and 6 are explanatory views of still another embodiment of the present invention, in which the rod is directed vertically to the most downstream calender roll 27 of the calender body in which five calender rolls 23 to 27 are formed in combination. The take-off rolls 12 to 16 are individually connected to the cylinders 29 to 33 whose rods are oriented in the vertical direction.
12 to 16 are simultaneously moved up and down to change the take-up position of the film 21, and at the same time, the calender roll 27 is moved up and down to bring the calender rolls 26 and 27 close to and away from each other, thereby similarly changing the number of rolling passes. I am able to do that.

The present invention is not limited to the above-described embodiment, the number and arrangement of the calender rolls are arbitrary, the moving direction of the take-off roll device can be changed according to the arrangement of the calender rolls, the take-off roll. The number of rolling passes that can be changed by increasing the moving distance of the device is not limited to one, but a plurality of rolling passes can be used, and the mechanism for moving the take-off roll device is a rack and pinion mechanism instead of the cylinder and an equivalent mechanism. Of course, it is possible to use another device having a function, and various changes can be made without departing from the scope of the present invention.

[Advantages of the Invention] As described above, according to the calendar of the present invention, the take-off roll is reciprocally moved between the final pass exit side position and the preceding pass exit side position to change the film take-up position with respect to the calendar body. Since it is possible to change the number of rolling passes, it is possible to manufacture different types of films with one unit, and it is possible to achieve various excellent effects such as reduction in equipment cost and installation area.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, FIG. 2 is an operation explanatory view of FIG. 1, FIG. 3 is an explanatory view of another embodiment of the present invention, and FIG. 4 is an operation of FIG. FIG. 5 is a further explanatory view of the present invention, and FIG. 6 is an operation explanatory view of FIG. In the figure, 1 to 6 are calender rolls, 7 to 11 are rolling passes, 12 to 16 are take-off rolls, 17 is a take-off roll device, 18 and 19 are cylinders, 20 is a raw material, and 21 is a film.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yukichi Konno Yukichi Konno No. 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishi Kawashima Harima Heavy Industries Co., Ltd. Yokohama Second Factory (56) Reference JP-A-57-2525 A)

Claims (1)

[Claims] 1. A calender in which a take-off roll device is disposed downstream of a calender body in which a plurality of calender rolls are combined to form a plurality of rolling passes, and the rolled film is taken by the calender body. The number of passes can be changed by reciprocating the film take-up position with respect to the calender body of the roll device between the final pass exit side position and the preceding pass exit side position so that the number of rolling passes of the calender body can be changed. A calendar characterized by what you have done.