JP3304525B2 - Method and apparatus for exchanging rolls of inclined calendar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for exchanging rolls of an inclined calendar for forming a molten resin into a sheet so that the rolls can be easily exchanged.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional inclined type calendar has inclined windows 2a, 2b, 2c, and 2 provided on left and right housings 2 on a driving side and a working side which constitute a calendar stand 1.
2d, and each of the inclined windows 2a, 2b, 2c, 2d
And the first roll axle box 3, the second roll axle box 4, the third roll axle box 5, and the fourth roll axle box 6 are incorporated so that they can be moved by the pressing devices 7, 8, 9, and 10, respectively, and A first roll 11, a second roll 12, a third roll 13, a first roll 11, a second roll 12, a third roll 13, Each shaft end of the fourth roll 14 is rotatably supported, and the resin supplied between the first roll 11 and the second roll 12 is supplied between the second roll 12 and the third roll 13 and between the third roll 13 and the fourth roll 13. Rolls are sequentially rolled between the rolls 14 to form a sheet and to be taken out.

[0003] In the inclined calendar constructed as described above, the replacement of the rolls is performed about once every one to two weeks.

Conventionally, when a roll is replaced, a wire rope is wound around the body of the roll and hung by a chain block between the left and right housings 2 located on the driving side and the working side, and hung in the roll axis direction. Put out,
At the time when the roll axle box on the working side has passed through the inclined window of the housing 2 on the working side and the body of the roll has jumped out of the calendar stand 1, another wire rope has been pulled out of the calendar stand 1. And the roll is further suspended in the axial direction of the roll by using the inner and outer wire ropes, and the outer roll rope box is disposed near the inclined window portion of the housing 2 on the drive side when the roll shaft box on the drive side is closed. When the transfer of the roll becomes possible, the inner wire rope is removed, and the entire roll is drawn out of the calendar stand 1 and transported by the two outer wire ropes.

[0005]

However, in the case of the above-mentioned conventional roll changing method, not only the work of replacing the wire rope is required, but also the roll axle box on the driving side is inclined with the inclined window of the housing on the working side. When the roll axle box is rotationally displaced when passing through, it becomes impossible to pass through the inclined window portion. At this time, an operator enters between the left and right housings 2 and a wire is attached to the drive side roll axle box. The work of hanging the rope and adjusting the position of the roll axle box to the inclination of the inclined window had to be performed using a chain block.

That is, in the inclined type calendar, since the roll shaft box is incorporated in the inclined window portion of the housing 2 in an inclined state, by moving the roll from the drive side to the work side, the roll shaft on the drive side is moved. When the box comes out of the inclined window of the housing 2 on the drive side, the roll shaft box is rotationally displaced about the roll axis, and in the posture as it is, it passes through the inclined window of the housing on the working side. Can not be done. Therefore, conventionally, it is necessary to adjust the posture of the roll axle box to the inclined window portion of the housing on the working side. For this reason, a chain block is further used, which requires a lot of manpower and a lot of time. However, there is a problem that the efficiency of the entire roll changing operation is poor.

Accordingly, the present invention enables the roll exchange to be performed without replacing the wire rope or aligning the roll axle box with the inclined window portion of the housing, thereby improving the efficiency of the roll exchange operation. The goal is to save labor.

[0008]

According to the present invention, in order to solve the above-mentioned problems, a roll shaft box having both shaft ends is installed and supported in inclined windows of a drive side and a work side housings constituting a calendar stand. In the method of exchanging the roll of the inclined type calendar, in which the roll formed is passed through the inclined window portion of the housing, the internal guide rail extending in the roll axis direction is provided so that the inner side of the roll shaft box on the drive side and the work side faces downward. The roll is moved from the drive side to the work side in the roll axis direction while the roll axle box is arranged along each of the internal guide rails in a state of being bridged between the inclined windows of both housings so as to correspond to the two surfaces. And pulling it out of the calendar stand.

[0009] Further, rolls each having a roll axle box at both shaft ends incorporated and supported in the inclined windows of the drive side and working side housings constituting the calendar stand are passed through the inclined windows of the housing. An internal guide extending in the direction of the roll axis, which extends between the inclined windows of both housings in correspondence with the two downwardly facing roll shaft boxes on the drive side and the work side in the roll changing device of the inclined calendar to be replaced. A moving carriage device having a rail and having an outer rail for communicating with the inner guide rail; and a roll pushing / pulling device for pushing / pulling a roll between the inner guide rail and the outer rail. Configuration.

[0010]

The roll shaft is moved from the drive side to the work side with the internal guide rails being stretched between the inclined windows of both housings so as to receive the two downward facing roll shaft boxes at both shaft ends. When moved in the direction, the roll axle box on the working side is pulled out directly from the inclined window of the housing on the working side,
On the other hand, the roll axle box on the drive side is moved along the internal guide rail, and is drawn out through the inclined window. At this time, since the attitude of the drive-side roll axle box is maintained by the internal guide rails, the roll-side box can easily pass through the work-side inclined window.

[0011]

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

FIGS. 1 and 2 show an embodiment of the present invention. Similar to the conventional inclined calendar shown in FIG. 4, the roll axle boxes 3, 4, 5, 6 at both ends are connected to the drive side D. And the inclined windows 2a, 2b, 2 of the left and right housings 2 located on the working side W.
c, 2d to support the first to fourth rolls 1
In a configuration in which 1, 12, 13, and 14 are incorporated in a calendar stand 1 composed of left and right housings 2, each of the left and right inclined windows of the left and right housings 2 located on the driving side D and the working side W An internal guide rail 15a extending in the direction of the roll axis is fixedly extended across the roll shaft boxes 3, 4, 5, 6 so as to correspond to the downward surface that does not interfere with the roll banks. The inner guide rail 15 is detachably mounted between the left and right inclined windows so as to correspond to the downward surface adjacent to the roll bank 5.
b.

That is, the inner guide rail 15a
Is located at a position in contact with the downward side surface of the roll axle box 3 in the inclined window portion 2a, at a position in contact with the downward side surface of the roll axle box 4 in the inclined window portion 2b, and is provided in the inclined window portion 2c. In the inclined window portion 2d, the inclined window portion 2d is fixedly disposed at a position in contact with the downward side surface of the roll axle box 6 and at a position corresponding to the downward bottom surface. On the other hand, the inner guide rail 15b is located at a position corresponding to the downward leading end surface of the roll shaft box 3 in the inclined window portion 2a, and at a position corresponding to the downward leading end surface of the roll shaft box 4 in the inclined window portion 2b. In the inclined window portion 2c, the roll window is inserted and arranged at a position corresponding to the downward side surface of the roll axle box 5 at the time of roll replacement.

The inner guide rail 15 is provided on the outer side of the housing 2 on the working side W of the calendar stand 1.
A mobile bogie device 18 having an external rail 16 for communicating with a and 15b on a bogie frame 17 is arranged (in this embodiment, a case where the mobile bogie device 18 is arranged so as to correspond to the fourth roll 14 is shown). The roll axle box 6 is located at a position opposite to the calendar stand 1 with the movable bogie device 18 interposed therebetween.
The push / pull cylinder 20 provided with the engaging portion 19 is installed as a roll push / pull device.

In the case of exchanging the rolls, when exchanging the fourth rolls 14, the roll shaft box 6 is retracted by the operation of the pressing down device 10 so that the fourth rolls 14 are separated from the third rolls 13. I do. Thereby, the downward bottom surface of the roll axle box 6 is brought into contact with the internal guide rail 15 a fixed between the inclined windows 2 d of the left and right housings 2. The downward side surface of the roll axle box 6 is in contact with the internal guide rail 15a from the beginning. Therefore, the two downward facing surfaces of the roll axle box 6 are received by the internal guide rails 15a.

Next, on the working side W of the calendar stand 1,
The mobile trolley device 18 is arranged. As a result, the inner guide rail 15a and the outer rail 16
The fourth roll 14 is moved in the roll axis direction by the push / pull cylinder 20 outside the calendar stand 1 so as to be pulled out from the inside of the calendar stand 1 to the working side W.

In the above case, when a pulling force is applied to the fourth roll 14, the roll axle box 6 on the working side W is moved from the inner guide rail 15a onto the outer rail 16, while the roll D on the driving side D is moved. Axle box 6 has internal guide rail 15a
After being slid up, it is pulled out onto the outer rail 16. At this time, even when the roll axle box 6 on the driving side D passes through the inclined window 2c of the housing 2 on the working side W, its posture is maintained constant by the internal guide rails 15a. When passing through the roll axle box 6
It is not necessary to perform the circumferential alignment of.

When a new roll 14 is to be incorporated, it is carried out by reversing the above-mentioned pull-out operation.

When the third roll 13 is to be replaced, for example, the roll axle box 5 is retracted by the operation of the pressing device 9 so that the third roll 13 is separated from the second roll 12. Thus, the inner guide rail 15a in which the downward bottom surface of the roll axle box 5 is fixed between the inclined windows 2d.
Is abutted. Next, the internal guide rail 15b is set to the inclined window portion 2c corresponding to the downward side surface of the roll axle box 5.
A movable bogie device 18 corresponding to the third roll 13 is disposed on the outer side of the working side W of the calendar stand 1, and then the same procedure as described above is performed. Replace the three rolls 13.

In the operation of replacing the third roll 13,
Since the internal guide rail 15b is not always arranged between the inclined windows 2c, there is no problem in checking the roll bank during the operation of the calendar. or,
When replacing the first roll 11 and the second roll 12, the same procedure as in the case of the third roll 13 may be performed.

Next, FIG. 3 shows another example of the mobile bogie device 18, which can be used for each roll. That is, a lifter 22 such as a cylinder or a jack is installed on a bogie frame 17 that can be moved by a shift cylinder 21, and a worm gear 24 driven by a motor 23 is mounted on an upper end of the lifter 22 via a support frame 25. A rail holding frame 27 in which an arc-shaped gear 26 is meshed with the worm gear 24, and the outer rail 16 corresponding to two downward facing roll shaft boxes is attached to the gear 26.
Is a mobile trolley device 18 having a fixed configuration.

In the case of the mobile bogie device 18 shown in FIG. 3, the height of the outer rail 16 can be changed by the operation of the lifter 22, so that it can correspond to each roll from the first roll 11 to the fourth roll 14. In addition, the angle of the outer rail 16 can be changed via the rail holding frame 27 by driving the worm gear 24 by the motor 23 and rotating the arcuate gear 26. It has the advantage that it can also be used.

In the above embodiment, the case where the inner guide rail 15a is fixed and bridged between the left and right inclined windows is shown. However, similarly to the inner guide rail 15b, the inner guide rail 15a is detachably provided when the roll is replaced. What you may do,
The internal guide rails 15a and 15b may have a structure incorporating a slide ball bearing, and may of course be variously modified without departing from the gist of the present invention.

[0024]

As described above, according to the present invention, the roll axle box can be pulled out along the guide rail extending between the inclined windows of the housing on the driving side and the working side. , Work can be performed more efficiently compared to the conventional wire suspension method, and the time can be significantly reduced.
In addition, when the roll is pulled out, the internal guide rails can receive the two downward faces of the roll axle box and maintain the posture, so that the roll axle box is positioned when passing through the inclined window of the housing. Excellent effects such as no need for manual work.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a roll changing device for an inclined calendar according to the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a schematic view showing another example of the mobile trolley device.

FIG. 4 is a schematic diagram showing an example of an inclined calendar.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Calendar stand 2 Housing 2a, 2b, 2c, 2d Inclined window part 3, 4, 5, 6 Roll axle box 11, 12, 13, 14 Roll 15a, 15b Internal guide rail 16 External rail 18 Moving bogie device 20 Push-pull cylinder (Roll push / pull device) D Drive side W Work side

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-48-13250 (JP, A) JP-A-7-16855 (JP, A) JP-A-6-170876 (JP, A) JP-A-58-58 8618 (JP, A) JP-A-58-136415 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 43/22-43/32 B29C 43/44-43/46

Claims (2)

(57) [Claims] A roll formed by incorporating and supporting roll axle boxes at both shaft ends into inclined window portions of a drive side and a working side housings constituting a calendar stand, respectively, is passed through the inclined window portion of the housing. In the method of exchanging the roll of the inclined calendar to be exchanged, the inner guide rail extending in the roll axis direction is hung between the inclined windows of both housings so as to correspond to two downward surfaces of the roll axle box on the drive side and the work side. In a state in which the roll is passed, the roll is moved from the drive side to the work side in the roll axis direction while pulling the roll axle box along each of the internal guide rails, and pulled out of the calendar stand. Roll exchange method. 2. A roll formed by incorporating roll shaft boxes at both ends into inclined window portions of the drive side and working side housings constituting a calendar stand, and passing the rolls through the inclined window portion of the housing. An internal guide extending in the direction of the roll axis, which extends between the inclined windows of both housings in correspondence with the two downwardly facing roll shaft boxes on the drive side and the work side in the roll changing device of the inclined calendar to be replaced. A movable trolley device comprising a rail, and having an outer rail for communicating with the inner guide rail,
A roll exchanging device for an inclined calendar, comprising: a roll pushing / pulling device for pushing / pulling a roll between the inner guide rail and the outer rail.