JPH1134084A - Cast roll replacement device in wide roll device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To diassemble and dismantle a cast roll and also assemble the same easily in a short time by setting a swing arm rotatably on a lower frame for supporting a shaft end section of the cast roll and rotating an upper frame and also rotating the swing arm. SOLUTION: In a cast roll replacement device in a wide roll device, a rear side face frame 2 of a side face frame 5 is split into an upper frame 2a and a lower frame 2b, and the upper frame 2a is constituted rotatably outward with a rotating support 2c provided on the outer face end as a support on a joint section of the upper frame with the lower frame 2b, and a swing arm 8 supporting the cast roll 21 and pushing the same backward is provided below both side shaft ends of the cast roll 21 to carry out simply the replacement of the cast roll 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for exchanging cast rolls in a web apparatus constituting a production line for a resin film or a thin resin sheet. It relates to a new improvement for

[0002]

2. Description of the Related Art In general, a raw material apparatus, which is one process in a production line for a resin film or a thin resin sheet, comprises:
This is an apparatus that continuously manufactures a resin material to be extruded into a thin sheet material. The material in the high-temperature molten state is continuously extruded from a T-die into a thin film on the surface of a casting roll rotating at a low speed. The thin film-shaped resin material rotates while being adhered to the surface of the cast roll, and is cooled to a predetermined temperature during that time to become a raw material. The raw material is peeled off before the cast roll makes one rotation, and is continuously taken to the next longitudinal stretching device. In this web apparatus, replacement for disassembling and assembling a cast roll is periodically performed.

FIG. 2 shows a front view of a conventionally used web apparatus, and FIG. 3 shows a right side view of FIG. In FIGS. 2 and 3, what is indicated by reference numeral 1 is a bottom frame.
The bottom frame 1 is formed in a substantially rectangular shape. The horizontally arranged bottom frame 1 includes a pair of vertically arranged rear side frames 2 and front side frames 3 and an upper frame laterally arranged between upper ends of the rear side frames 2 and the front side frames 3. 4, a pair of side frames 5 are provided at intervals. A bearing frame 6 that is horizontally arranged is placed on the bottom frame 1 via a screw jack 7 that can be adjusted up and down, at an intermediate height position on each outside of each side frame 5.

[0004] A cast roll 21 is rotatably disposed between the side frames 5 through bearings 22 provided on the bearing frame 6.
A T-die 23 is arranged on the upper frame 4 above. When the cast roll 21 is replaced in the raw material apparatus configured as described above, first, the T-die 23 is removed from the side frame 5, the upper frames 4 of the side frames 5 on both sides are removed, and then the side faces on both sides are removed. Remove the rear side frame 2 of the frame 5. Next, the fixed state of the bearings 22 on both sides with the bearing frame 6 is released, and then the cast rolls 21 are lifted by suspending the bearings 22 on both sides with a hoist or the like and moved to a predetermined place. When assembling the cast roll 21, the steps are performed in the reverse order of the above-described disassembly and removal.

[0005]

The cast roll exchanging device in the conventional material roll apparatus is configured as described above, and therefore has the following problems. That is, in order to accurately and stably hold the cast roll 21 having a large outer diameter and a large weight, the side frame 5 includes the rear side frame 2, the front side frame 3, and the upper frame 4, which are constituent members, which are long and heavy. ing. Therefore, when disassembling, removing and assembling the upper frame 4 and the rear side frame 2, the labor is enormous, and the operation also needs to be performed carefully, which requires a lot of operation time.

Further, a space for arranging the removed upper frame 4, the rear side frame 2 and the like is required around the raw material device. In addition, there are many dangers of damaging the cylindrical surface of the cast roll 21 due to the large number of disassembled portions and detaching members.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In particular, the present invention is directed to a casting machine in which a casting roll 21 can be easily disassembled, removed and assembled by reducing the number of disassembly points. It is an object to provide a roll changing device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a cast roll exchanging apparatus for a web apparatus, comprising: a bottom frame; a rear side frame, a front side frame, which is vertically arranged on the bottom frame; and the rear side frame and the front side frame. A pair of side frames formed by an upper frame provided between upper ends of the pair of bearings; a pair of bearing frames provided on the bottom frame via a screw jack that can be adjusted up and down; A cast roll provided via a bearing;
The rear side frame includes a rotatable upper frame and a fixed lower frame, and has a swing arm rotatably provided on the bottom frame to support an end of the cast roll, The cast roll is moved by the swing arm by rotating the upper frame and rotating the swing arm. Further, a cylinder type driving device is connected to the swing arm.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a cast roll exchanging apparatus in a raw material apparatus according to the present invention will be described below in detail with reference to the drawings. Note that the same or equivalent parts as those in the related art will be described using the same reference numerals. FIG. 1 is a right side view of a web apparatus according to the present invention. Note that FIG.
Are not shown. In FIG. 1, what is indicated by reference numeral 1 is a bottom frame, and the bottom frame 1 is formed in a substantially rectangular shape. The horizontally arranged bottom frame 1 has a pair of vertically arranged rear side frames 2 and front side frames 3 and an upper part which is stretched and laterally arranged between upper ends of the rear side frames 2 and front side frames 3. A side frame 5 is provided which is connected to the frame 4 in a substantially gate-shaped manner. Between the front side frame 3 and the upper frame 4 of the side frame 5,
A reinforcing support member 5a is provided.

The rear side frame 2 is further divided into an upper frame 2a and a lower frame 2b. The upper frame 2a is moved outward (to the left in FIG. 1) via a rotation fulcrum 2c at the joint with the lower frame 2b.
It is configured so that it can be rotated and disassembled. A handle 2d is provided at a lower end portion of the upper frame 2a, and a well-known reduction rotation device is provided between the handle 2d and the rotation fulcrum 2c.
For example, the worm provided on the handle 2d and the wheel provided on the rotation fulcrum 2c make the handle 2
d to rotate the upper frame 2a to the rotation fulcrum 2c.
Can be easily rotated around.

A bearing frame 6, which is horizontally arranged, is arranged on the bottom frame 1 via a screw jack 7 which can be adjusted up and down at an intermediate height outside each of the side frames 5. Between the side frames 5, bearings 22 for rotatably holding the cast rolls 21 are installed and fixed on the upper surfaces of the bearing frames 6, respectively. One end 8 is located below both ends of the cast roll 21.
a is rotatably supported by the bottom frame 1 along the side frame 5, and the other end 8 b configured to support the shaft end of the cast roll 21 is positioned below the shaft end of the cast roll 21. Swing arm 8 is provided rotatably. In addition, the one end 8 a is located rearward of a position immediately below the shaft end of the cast roll 21, that is, shifted toward the rear side frame 2. The swing arm 8 is connected to a rotation driving device 9, for example, a hydraulic cylinder at an intermediate portion thereof.
The other end is connected to the front side frame 3.

Above the front cast roll 21, a T-die (not shown) is disposed, and both ends thereof are fixed to the upper frame 4 of the side frame 5.

When the cast roll 21 is disassembled, detached, and then assembled in the raw fabric apparatus configured as described above, the following operation is performed. That is, when disassembling and removing, first, the connection state of the upper frame 2a and the upper frame 4 of the rear side frame 2 is released. Next, the upper frame 2a is turned outward by turning the handle 2d. Next, the screw jack 7 is operated to lower the bearing frame 6 and lower the cast roll 21. As a result, the shaft end of the cast roll 21 that has descended is supported by the other end 8 b of the swing arm 8. Next, the fixed state of the bearing 22 and the bearing frame 6 is released. When the swing arm 8 is rotated rearward, that is, in the direction of the rear side frame 2 by operating the rotation drive device 9, the cast roll 21 is pushed up rearward without contacting the T-die 23. Then, the cast roll 21 is lifted by suspending the bearings 22 on both sides of the hoist 100 and moved to a predetermined place. When assembling the cast roll 21, the steps are performed in the reverse order of the above-described disassembly and removal.

[0014]

According to the present invention, since the cast roll exchanging apparatus in the web apparatus according to the present invention is configured as described above,
The following effects can be obtained. In other words, when disassembling and removing the cast roll and assembling, the raw fabric device opens the connection state of the upper frame and the upper frame of the rear side frame, turns the handle and tilts the upper frame outward,
The cast roll can be moved by the swing arm, and there is no need to remove the heavy and long members constituting the T-die and the side frame. Therefore, the cast roll can be easily disassembled, removed and assembled in a short time.
Moreover, the danger of damaging the cylindrical surface of the cast roll can be reduced.

[Brief description of the drawings]

FIG. 1 is a right side view showing a cast roll exchanging device in a raw material device according to the present invention.

FIG. 2 is a front view showing a cast roll exchanging device in a conventional web device.

FIG. 3 is a right side view of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom frame 2 Rear side frame 2a Upper frame 2c Rotating fulcrum 2d Handle 3 Front side frame 4 Upper frame 5 Side frame 5a Reinforcement support member 6 Bearing frame 7 Screw jack 8 Swing arm 9 Rotary drive 21 Cast roll 22 Bearing 23 T die

Claims (2)

[Claims] 1. A bottom frame (1), a rear side frame (2) vertically arranged on the bottom frame (1), and a front side frame
(3), and a pair of side frames (5) formed by an upper frame (4) provided between upper ends of the rear side frame (2) and the front side frame (3); A pair of bearing frames (6) provided on the bottom frame (1) via jacks (7); and each of the bearing frames (6)
Cast roll (21) provided above via a bearing (22)
And the upper frame (2a) in which the rear side frame (2) is rotatable.
And a fixed lower frame (2b), and the bottom frame (1) for supporting the shaft end of the cast roll (21).
It has a swing arm (8) rotatably provided on the top,
Rotate the upper frame (2a) and swing arm (8)
The cast roll (21) is moved by a swing arm (8) by rotating the cast roll (21). 2. The cast roll exchanging device according to claim 1, wherein a cylinder type driving device (9) is connected to the swing arm (8).