JP3126197B2 - Lower blade roll replacement device in slitter - 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 in which a sheet such as a plastic film is wound around a lower blade roll, and a tip of an upper blade of an upper blade roll is inserted into an annular groove of a lower blade provided in the lower blade roll. The present invention relates to an apparatus for replacing a lower blade roll in a shear-cut type slitter in which a sheet is inserted to cut a sheet.

[0002]

2. Description of the Related Art When a sheet is cut by a shearing method in a slitter, the sheet is wound around a lower blade roll, and an upper blade of an upper blade roll is inserted into an annular groove of a lower blade provided in the lower blade roll. The tip is inserted and cut. In the lower blade roll, a plurality of lower blades and a distance collar for maintaining the interval between the lower blades at a set dimension are attached, and when the cutting width of the sheet to be cut is changed, Alternatively, when the lower blade is worn and becomes less sharp, it is necessary to remove the lower blade roll in use from the slitter and replace it with a lower blade roll having a lower blade having a changed cutting width. Conventionally, since the lower blade roll replacement work described above has a lower blade roll that is long and weighs about 30 kg, the two workers cooperate using a hoist to slit the lower blade roll. Was taken out of the frame.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention makes it possible for a single operator to easily and safely remove and install the lower blade roll with respect to the slitter frame. The task was to do so.

[0004]

Means for Solving the Problems The means adopted by the present invention comprises a lower blade roll detachably supported by a frame, and an upper blade roll corresponding to the lower blade roll. In a shear-cut type slitter configured to cut a sheet wound around the lower blade roll into a predetermined width by a lower blade and an upper blade attached to each roll, a sheet immediately below both ends of the lower blade roll. The first and second temporary support rails are respectively disposed in a direction perpendicular to the axis of the lower blade roll and substantially in the horizontal direction, and the tip of each of the first and second temporary support rails is provided. A lower blade roll supporter having a roller structure is provided below and parallel to the mounted lower blade roll.

[0005]

When the lower blade roll is to be removed from the frame, first, one end of the lower blade roll is removed from the frame, and the lower blade roll is temporarily moved by one temporary support rail disposed immediately below one end of the lower blade roll. Then, the other end of the lower blade roll is removed from the frame, and temporarily supported by the other temporary support rail disposed immediately below. In a state where both ends of the lower blade roll are temporarily supported by the temporary support rails, the lower blade roll is rolled to the front end of the temporary support rail, and then one end is lifted and disposed below the lower edge roll. Is placed on the rollers of the lower blade roll support, and then the other end is lifted and placed on the rollers of the lower blade roll support. Thereby, the lower blade roll, both ends of which have been temporarily supported by the pair of temporary support rails, is transferred to the lower blade roll support, and in this state, when the lower blade roll is moved in the axial direction, from within the frame. The lower blade roll is removed. Then, the lower blade roll prepared separately is taken into the frame, and the reverse operation is performed to mount a new lower blade roll at a proper position on the frame.

[0006]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. In FIG. 1, a pair of a left frame 1 and a right frame 2 erected on a base (not shown) are arranged on a slitter A in parallel with each other. The lower blade roll 3 disposed between the pair of left and right frames 1 and 2 has a lower blade shaft 4.
A plurality of lower blades 5 are provided outside the lower blade shaft 4, and a plurality of distance collars for maintaining the plurality of lower blades 5 at intervals of a cutting width of a sheet (not shown). 6 is fitted. The lower blade 5 and the distance collar 6 are screwed into a thread 8 formed on the outer peripheral surface of the lower blade shaft 4 on the right end 4b side with respect to the collar 7 provided on the left end 4a of the lower blade shaft 4. It is fixed to the lower blade shaft 4 by the nut member 9 which is provided. The lower blade shaft 4 has a left end 4a and a right end 4b.
Of the left engagement hole 11 and the right engagement hole 1 are tapered.
2 are each opened. The left support shaft 13 supports the left end 4a of the lower blade shaft 4 on the left frame 1 side, and the cylindrical portion 14a is fitted into a hole formed in the left frame 1,
The flange portion 14b is rotatably supported by a pair of bearings 15 provided in a shaft hole of the cylindrical portion 14a of the left bracket 14 fixed to the inner surface of the left frame 1. The left support shaft 13 has a frusto-conical head 13a fitted at the left engagement hole 11 of the lower blade shaft 4 at a tip protruding inside the left frame 1. The support shaft 13 has a first gear 16 mounted on an outer peripheral surface between a head portion 13 a and a flange portion 14 b of the left bracket 14. Further, a pulley (not shown) of the left support shaft 13 is attached to an outer shaft portion 13 b protruding outside the left bracket 14,
When the pulley is rotated by the driving means, the left support shaft 13 is rotated.
A right support shaft 17 that supports the right end 4b of the lower blade shaft 4 on the right frame 2 side is supported by a right bracket 18 mounted on the right frame 2 at a position facing the left bracket 14 mounted on the left frame 1. It is supposed to be. The right bracket 18 is also formed of a tubular portion 18a and a flange portion 18b. A tubular portion 18a longer than the tubular portion 14a of the left bracket 14 is fitted into a hole formed in the right frame 2, A flange portion 18b located outside the frame 2 is fixed to the right frame 2. A sliding cylinder 19 whose rear end (right side in FIG. 1) is closed by a cover plate 22 is slidably inserted into the cylindrical portion 18a of the right bracket 18. The right support shaft 17 is inserted into the sliding cylinder 19 and is rotatably supported via a pair of bearings 21 and 21. The right support shaft 17 has a head 17a located on the opening end 19a side of the sliding cylinder 19 in the same shape as the head 13a of the left support shaft 13, and this head 17a A compression spring 23 provided between the rear end and the lid plate 22 of the sliding cylinder 19 protrudes from the opening end 19a of the sliding cylinder 19. The sliding cylinder 19 has its lid plate 22
A lever 24 is mounted in a radial direction of a portion close to the right side, and this lever 24 is attached to the cylindrical portion 18a of the right bracket 18.
The guide groove 25 is formed so as to move. That is, as shown in FIG.
1 is moved to the left end side of the guide groove 25, the head 17a of the right support shaft 17 projects into the right frame 2 as shown by a solid line in FIG. Is moved to the right end side of the
Are located near the right frame 2 as indicated by the two-dot chain line.

In order to support the lower blade roll 3 by the left support shaft 13 and the right support shaft 17 formed as described above, first, the lever 24 is operated to move the sliding cylinder 19 inserted into the right bracket 18. The open end 19a is connected to the cylindrical portion 1 of the right bracket 18.
8a. Next, the left end 4 of the lower blade shaft 4
The left engagement hole 11a is fitted in the head 13a of the left support shaft 13, and the right end 4b of the lower blade shaft 4 is opposed to the right support shaft 17, and the lever 24 is moved in the opposite direction to the front. Move. By the movement of the lever 24, the opening end 19a of the sliding cylinder 19 protrudes from the end of the cylindrical portion 18a, and the head 17a of the right support shaft 17 inside the sliding cylinder 19 is moved to the right engagement hole 12 of the right end 4b of the lower blade shaft 4. Engages. In this state, the head 17a of the right support shaft 17
The head 17a of the right support shaft 17 is pressed against the right engagement hole 12 by the restoring force of the compression spring 23 elastically mounted on the opposite end. Thus, the lower blade roll 3 is rotatably supported by the left support shaft 13 and the right support shaft 17.

As shown in FIGS. 1 and 2, the upper blade roll 26 comprises an upper blade shaft 27 and a plurality of upper blade holders 28 attached to the upper blade shaft 27. Are mounted with upper blades 29, respectively. The upper blade roll support shaft 31 is attached to each of the left and right frames 1 and 2 at a predetermined distance from and parallel to the lower blade roll 3. Has a pair of upper blade shaft support brackets 32 mounted thereon. Both ends of the upper blade shaft 27 are attached to the upper blade shaft support bracket 32 via bearings 33, respectively. In this manner, the upper blade roll 26 attached to the upper blade roll support shaft 31 is configured such that the tip of the upper blade 29 protrudes into the groove 5 a of the lower blade 5 of the lower blade roll 3 so that each upper blade roll A blade holder 28 is attached to the upper blade shaft 27. A second gear 34 that meshes with the first gear 16 mounted on the left support shaft 13 is mounted on the upper blade shaft 27.

The first temporary support rail 35 is plate-shaped and has a predetermined length. The first temporary support rail 35 is provided immediately below the left end 4 a of the lower blade shaft 4 of the lower blade roll 3 and near the collar 7. . As shown in FIG. 6, the first temporary support rail 35 has one end attached to the flange portion 14b of the left bracket 14 attached to the left frame 1, and sandwiches the first gear 16 from both sides. A pair of support bolts 37 extending to the inside of the frame 1 is attached via a spacer 38 in the form of a pipe. As shown in FIG. 4, the first temporary support rail 35 has a top surface on a support surface 35 a in which a portion from a portion 35 c immediately below the left end portion 4 a of the lower blade shaft 4 to a tip portion 35 b is recessed in a stepped manner. The above-mentioned portion 35c and the tip 3
5b is an oblique surface inclined at an obtuse angle with respect to the support surface 35a. On the other hand, a second temporary support rail 36 is also provided immediately below the right end 4 b of the lower blade shaft 4 of the lower blade roll 3. The second temporary support rail 36 is connected to the right bracket 18 in the same manner as the first temporary support rail 35 is attached to the left bracket 14.
Mounted on FIG. 5 also shows the second temporary support rail 36.
As shown in FIG. 5, a support surface 36a, a tip portion 36b, and a direct lower portion 36c respectively corresponding to each portion of the first temporary support rail 35 are provided. Since the total length of the second temporary support rail 36 is shorter than that of the first temporary support rail 35, the length of the support surface 36a is shorter than the support surface 35a of the first temporary support rail 35. The second temporary support rail 36 is provided on the take-out side of the lower blade roll 3 and prevents the lower blade roll 3 from interfering with the second temporary support rail 36 when the lower blade roll 3 is taken out from the frame. In order to avoid this, the length of the first temporary support rail 3
5 is shorter than the length. The first and second temporary support rails 35 and 36 are respectively provided in a direction perpendicular to the axis of the lower blade roll 3 and in a horizontal direction.

As shown in FIG. 1 and FIG. 2, the lower blade roll support 40 is provided with 45
It has a predetermined length of support rod 41 having a pair of inclined surfaces 41a, 41a formed by chamfering at a large angle, and as shown in FIG.
Both ends of the first temporary support rail 35 are attached to the left and right frames 1 and 2, respectively, so as to be located immediately below the distal end 35 b of the first temporary support rail 35. A large number of pairs of bearing support shafts 42, 42 in a pair form are attached to each inclined surface 41a, 41a of the support rod 41 at an angle of 90 degrees. A cylindrical spacer 43 is fitted on each bearing support shaft 42, and a bearing 44 is mounted on the spacer 43. FIG.
And the right frame 2 of the slitter as shown in FIG.
An adjustment table 46 is arranged on the side of the lower blade roll support tool 40 in FIG. The adjusting table 46 is for adjusting the lower blade roll taken out of the slitter frame (changing the interval between the lower blades and sharpening the worn lower blade). A plurality of rollers 48 are rotatably supported at a predetermined interval between a pair of support frames 47, 47 arranged in the same manner. The adjusting table 46 is provided outside the right frame 2 and in series with the lower blade roll support 40, and moves the lower blade roll 3 supported by the lower blade roll support 40 in the axial direction thereof. When it is taken out, it is placed on the roller 48 of the adjustment table 46.

When the sheet is wound around the lower blade roll 3 of the slitter A and the left support shaft 13 is rotated by the driving means, the lower blade roll 3 supported by the left and right support shafts 13 and 17 is moved to the left support shaft 13. Rotate in the same direction as. At the same time, the second gear 3 meshing with the first gear 16 of the left support shaft 13
The upper blade roll 26 provided with 4 rotates in the opposite direction to the lower blade roll 3, and cuts the sheet into a set width by the lower blade 5 and the upper blade 29. Here, when the cutting width of the sheet is changed, the lower blade roll 3 and the upper blade roll 26 need to be replaced.

Next, the replacement of the lower blade roll 3 will be described. After the rotation of the lower blade roll 3 is stopped, the tightening of the upper blade roll support shafts 31 on both upper blade shaft support brackets 32 is loosened, and The upper blade shaft support bracket 32
2, the upper blade 29 is pulled out from the lower blade 5 of the lower blade roll 3 by rotating upward as indicated by a two-dot chain line. Next, in FIG. 1, when the lever 24 on the right bracket 18 side is moved rightward and the sliding cylinder 19 is pulled into the right bracket 18, the sliding cylinder 19 engages with the right engagement hole 12 of the right end 4 b of the lower blade shaft 4. The fitted head 17a of the right support shaft 17 is pulled out from the right engagement hole 12. Here, since the shape of the head 17a of the right support shaft 17 is a truncated cone, as the head 17a moves away from the right engagement hole 12, the support position of the right end 4b of the lower blade shaft 4 slightly decreases. And
Thereby, the right end of the lower blade shaft 4 is slightly lowered with respect to the left end. The head 17a of the right support shaft 17 is
2, the right end 4 b of the lower blade shaft 4 is supported by a lower portion 36 c of the second temporary support rail 36 as shown in FIG. 2. Next, the engagement between the left engagement hole 11 of the left end 4a of the lower blade roll 3 and the head 13a of the left support shaft 13 is released by ordinary means, and the head 13a of the left support shaft 13 is moved from the left end 4a to the left end 4a. When the lower blade roll 3 is moved in the direction in which
When the left end portion 4a also descends and comes out of the head portion 13a, it is supported by the lower portion 35c of the first temporary support rail 35 as shown in FIG. And this lower blade roll 3
To the support surfaces 35a, 36a of the two temporary support rails 35, 36.
When the roller 3 is rolled in the direction of the tips 35b, 36b, the lower blade roll 3 is stopped by the right end 4b abutting on the tip 36b of the second temporary support rail 36, as shown in FIG. I do. Subsequently, when the lower blade roll 3 is rolled in the same direction, as shown by a two-dot chain line in FIG.
The left end 4a is the tip 35b of the first temporary support rail 35.
Stop in contact with. Thereafter, the right end 4b side of the lower blade roll 3 is lifted by a height exceeding the tip end 36b of the second temporary support rail 36, and the lower blade roll support 40 disposed near the right end 4b is raised. A pair of bearings 4
The lower blade roll 3 is placed on the rollers 4 and 44 (shown by solid lines in FIG. 3). Next, the left end 4a side of the lower blade roll 3 is lifted by a height exceeding the tip end 35b of the first temporary support rail 35, and the left end 4a is pushed toward the right end 4b to be separated from the first temporary support rail 35. Is mounted on a pair of bearings 44 of a rotation support portion 45 of the lower blade roll support device 40 disposed therebelow. As a result, the lower blade roll 3 is supported by all the rotation supporting portions 45 of the lower blade roll support tool 40 as shown by the two-dot chain line in FIGS. 7 and 8.

As described above, the lower blade roll 3 is extracted from the left and right support shafts 13 and 17, and the lower blade roll support 4 is removed.
The operation up to the support by zero is started from the operation of the lever 24 of the right bracket 18, and all the operations can be sequentially performed by one person. And the lower blade roll support 40
When the lower blade roll 3 placed on the adjustment table 46 is pushed in the direction of the adjustment table 46, the lower blade roll 3 is smoothly moved in the axial direction as it is and is mounted on the adjustment table 46. And
On this adjustment table 46, another lower blade roll is placed after adjustment, and by performing each operation reverse to the above, the lower blade roll is taken in from the outside of the slitter frame,
It is mounted on the specified position of the frame. The work of mounting the lower blade roll can be easily performed by one person.

Further, in the above embodiment, the length of the second temporary support rail 36 provided on the take-out side of the lower blade roll 3 is made shorter than that of the other first temporary support rail 35, A lower blade roll support 40 is disposed immediately below the tip of the second temporary support rail 36, thereby providing the second temporary support rail 36.
The lower blade roll 3 can be taken out from the frame without interfering with the lower blade roll. However, the lengths of the first and second temporary support rails are made equal, and the lower blade roll support is provided obliquely below their leading ends. It is also possible to adopt a configuration in which tools are provided.

[0015]

According to the present invention, a lower blade roll detachably supported by a frame and an upper blade roll corresponding to the lower blade roll are provided, and a sheet wound around the lower blade roll is applied to each roll. In a shear-cut type slitter configured to cut into a predetermined width by a lower blade and an upper blade respectively attached, first and second temporary support rails are respectively provided directly below both ends of the lower blade roll. It is arranged at right angles to the roll axis and almost horizontally,
Below the tip of each of the first and second temporary support rails,
Since the lower blade roll support of the roller structure is provided in parallel to the lower blade roll in the mounted state, the lower blade roll removed from the proper mounting position is temporarily attached to the first and second temporary support rails. After supporting and rolling along the temporary support rail to the tip, the lower blade roll is transferred to the rotation support portion of the lower blade roll support and moved along its axial direction. By taking the lower blade roll out of the frame, the lower blade roll can be taken out of the frame, and the lower blade roll can be taken into the frame from the outside of the frame by sequentially performing the reverse operation, and the lower blade roll can be mounted at a regular position. Can be. As described above, according to the present invention, in the shear cut type slitter, the work of removing the lower blade roll from the frame and the work of mounting the lower blade roll can be performed easily and safely by one worker.

[Brief description of the drawings]

FIG. 1 is a front view of a lower blade roll replacement device according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a side view in a different state.

4 is a right side view of a portion of a first temporary support rail 35. FIG.

5 is a left side view of a portion of a second temporary support rail 36. FIG.

FIG. 6 is a cross-sectional plan view showing a state where the first temporary support rail 35 is attached to the left frame 1.

FIG. 7 is a front view of a portion including a lower blade roll support device 40 and an adjustment table 46.

FIG. 8 is a plan view of the same.

[Explanation of symbols]

 1: Left frame 2: Right frame 3: Lower blade roll 5: Lower blade 26: Upper blade roll 29: Upper blade 35: First temporary support rail 36: Second temporary support rail 40: Lower blade roll support

Claims (2)

(57) [Claims] 1. A lower blade roll removably supported by a frame, and an upper blade roll corresponding to the lower blade roll, and a sheet wound around the lower blade roll is attached to each roll. In a shear-cut type slitter configured to cut to a predetermined width by a lower blade and an upper blade, first and second temporary support rails are respectively provided at right angles to both ends of the lower blade roll at right angles to the axis of the lower blade roll. Direction, and substantially along the horizontal direction.
A lower blade roll supporter having a roller structure is provided below the tip of each of the second temporary support rails in parallel to the lower blade roll in the mounted state, and the lower blade roll removed from the regular mounting position. After temporarily supporting the first and second temporary support rails and rolling along the temporary support rails to the tip thereof, the lower blade roll is transferred to the lower blade roll support, The lower blade roll is taken out of the frame by moving along the axial direction, and at the same time, the lower blade roll is taken in from the outside of the frame into the frame by performing the reverse of the above operation, and attached to the proper position. A lower blade roll replacing device in a slitter, wherein 2. The second temporary support rail disposed on the take-out side of the lower blade roll is shorter than the length of the other first temporary support rail, and is provided below the tip of the first temporary support rail. The lower blade roll replacement device in the slitter according to claim 1, further comprising a lower blade roll supporter.