JPH0737829Y2 - Workbench for changing blades on blade rolls - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a blade used when replacing each blade of a blade roll formed by sequentially inserting a number of ring-shaped blades coaxially around a central axis. It relates to a workbench for replacement.

(Background of the Invention and Prior Art) For example, in a web cutting device (slitting machine) that divides a wide paper web fed from an original roll into a plurality of strips in the width direction, a plurality of slits are provided around a central axis. A tool roll formed by arranging ring-shaped tools side by side at a predetermined interval in the axial length direction, and a large number of disk cutters to be joined to each tool of the tool roll, respectively, each tool By passing the paper web between the roll and the disc blade, the paper web can be divided into a plurality of strips in the width direction. An example of a cutter roll used in this type of web cutting device is shown in FIG. 5, for example. That is, the blade roll 8 shown in FIG.
Is a large number of ring-shaped blades 8 around one central axis 81.
2, 82 ... Are sequentially inserted through the spacers 83,
Both ends are tightened by tightening screw rings 84, 84, respectively.

By the way, in this type of web cutting device, it is necessary to replace each blade with a new one when the blade edge of each blade wears as the operating time elapses and the cutting ability deteriorates. In the blade roll 8 shown in FIG. 5, each blade 82,82 ・
When replacing, the cutting blade roll 8 as a whole is removed from the web cutting device and carried out of the web cutting device. That is, in this blade roll 8, one screw ring 84 is removed outside the web cutting device (reference numeral 8).
4 '), sequentially remove each spacer 83 and blade 82 from the shaft end 81b on the side where the screw ring is removed (chain line 83 minutes, 82') and disassemble, and then sequentially alternate the new blade 82 and spacer 83 with the central axis. Fitting around 81, and finally tightening the screw ring 84 completes the replacement of the blade. In addition, blade roll 8
When the blade 82 is replaced, the blade 82 and the spacer 83 to be replaced and the detachable end 81b of the central shaft 81 such as the blade are in a floating state from the support base or the floor for supporting the blade roll. However, conventionally, the supporting operation in the floating state has been performed by manually lifting the edge 8b of the blade roll 8 on the blade attaching / detaching operation side.

(Problems to be solved by the invention) However, when replacing the blade 82 of the blade roll 8,
In order to levitate the edge 8b of the blade detaching operation side of the blade roll 8 from the floor surface or the like, conventionally, since it was manually lifted and supported, a work for lifting the edge of the blade roll in the blade replacement work. Workers and blades 82 and spacers
There is a problem that a worker for pulling out or inserting 83 is required at the same time, and a plurality of workers are required, and that if the outer diameter of the blade roll 8 becomes large, the lifting work by hand becomes a heavy labor. . Incidentally, in this type of blade roll 8, the larger the outer diameter (outer diameter of the blade 82), the longer the blade replacement period, which is advantageous. However, when the outer diameter of the blade roll 8 is increased in this way, The entire blade roll becomes heavy and it becomes difficult to change the blade.

DISCLOSURE OF THE INVENTION The present invention provides a workbench for changing blades in which a single worker can perform the work of changing the blades with a relatively light work in view of the problems at the time of changing the blades in the conventional blade roll as described above. The purpose is.

(Means for Solving the Problem) The present invention provides a tool replacement workbench for a tool roll in which a number of ring-shaped tools are sequentially fitted coaxially around the central axis from the end side of the central axis. , On the base,
Each end support and intermediate support that can support the both ends of the blade roll in the length direction and the middle portion of the blade roll in the length direction are provided, and the two end supports are provided. A pedestal for receiving a blade roll, a pedestal for guiding the pedestal so as to be slidable in the vertical direction, and a pedestal for moving the pedestal up and down with respect to the at least one end support of the platform and the intermediate support. It is characterized by having a pedestal lifting device.

(Operation) According to the tool changing workbench of the present invention, both ends and the middle part of the tool roll can be supported on the base.
With one end support and one intermediate support,
The blade rolls can be supported on the base in a floating state by the respective support bases. Further, at least one of the two end supporting bases and the intermediate supporting base are respectively provided with a receiving base for receiving the cutter roll and a receiving base elevating device for moving the receiving base up and down with respect to the support column. Therefore, by raising and lowering the pedestal on the movable side, it is possible to support the blade roll at two locations, one end support pedestal and the intermediate support pedestal, or at both end pedestal support pedestals. Become. Further, in a state in which the pedestal of the edge support on one side is lowered to support the blade roll at two points, the other end support and the intermediate support, the pedestal lower end of the blade roll is supported. The blade from the intermediate support to the support by the intermediate support is in a free state (sliding in the axial length direction with respect to the central axis), and the blade roll is provided by one end support and the intermediate support. The tool in the free portion of the tool roll in a point-supported state can be inserted into and removed from the free side shaft end with respect to the central axis. Further, in a state in which the cradle of the intermediate support base is lowered and the blade roll is supported at two positions on each end support base, each blade is slid between the support parts at both ends with respect to the central axis. It becomes possible. Therefore, for example, when removing each blade from the center axis of the blade roll, first, the blade roll is supported at two locations, one end support base and the intermediate support base, and the other end support base is supported. In the lowered state, pull out the blade in the free part from the free-side shaft end of the central shaft, and then raise the pedestal of the end support base that was lowered and use the pedestal to move the other end of the blade roll. After supporting the part, lower the pedestal of the intermediate support table and shift the remaining cutters fitted around the central axis from the supporting position of the intermediate support table to the removable side along the central axis. Then, the pedestal of the intermediate support is raised to support the intermediate part of the blade roll on the pedestal, and then the pedestal of the end support pedestal on the blade removal side is lowered, and each blade on the free side is attached to the free side shaft. Can be removed from the end. If the blade still remains around the central axis, the above operation may be repeated. Also, when mounting a new blade on the empty center axis, when the blade roll is supported by the one end support base and the intermediate support base, the blade is sequentially inserted from the free side shaft end, Next, change the support part of the tool roll and slide the tool inserted earlier to the back side of the support part of the intermediate support table, and sequentially insert the support of the intermediate support table and the end support table of the tool fitting side. By alternately moving up and down the pedestal, it becomes possible to insert the blade over a predetermined length range of the central axis.

(Effect of the Invention) As described above, according to the tool changing workbench of the present invention, it is not necessary to manually support the tool roll at the time of the tool changing work, so that one person can perform the tool changing work. Moreover, there is an effect that the work can be performed lightly. Further, since it is not necessary to manually support the blade roll during the blade replacement work, the workability does not deteriorate even if the weight of the blade roll is increased (even if the outer diameter of the blade is increased). There is an effect that it is possible to increase the outer diameter of the blade to extend the blade replacement period.

(Embodiment) Explaining the tool changing workbench of the embodiment of the present invention shown in FIGS. 1 to 4 together with FIG. 5, the workbench changing workbench of the illustrated embodiment has a blade roll 8 to be handled. Elongated rectangular base 1 with a length much longer than the total length of
Two end support bases 2, 3 capable of supporting the both end portions 8a, 8b (each end portion of the central shaft 81) of the cutter roll 8, respectively,
A total of three support bases, that is, an intermediate support base 4 capable of supporting the lengthwise intermediate portion 8c of the blade roll 8 is provided at a substantially central portion between the both end support bases 2, 3.

In this embodiment, a movable carriage with wheels 11 (four in total) is adopted as the base 1, and the base 1 is operated by pushing and pulling with handrails 12 and 12 provided at both ends in the length direction. The entire workbench can be moved.
Further, a stopper mechanism 13 (a total of 4 sets) is attached to the base 1 so as to prevent the work table from moving during the work of replacing the tool roll 8 with the tool. The stopper mechanism 13 is configured so that the ground plate 16 provided at the lower end of the screw rod 15 can be grounded or floated from the ground by rotating the handle 14.

The two end support bases 2 and 3 and the one intermediate support base 4 have columns (21, 31, 4) each having an appropriate height (about 500 to 600 mm).
1) and a pedestal (22, 32, 42) protruding from the side surface of the column in the width direction of the pedestal. Each pedestal (22,32,42)
Are for supporting the blade rolls 8 from below, respectively. This total of three supports (2,3,4) is the base 1
The position of the upper edge of the blade roll 8 at a position closer to one side edge in the width direction and the position at which both ends 8a, 8b in the length direction of the blade roll 8 can be supported according to the length of the blade roll 8 to be handled, and the length of the blade roll 8. The pedestals (22, 32, 42) are installed so as to face the center in the width direction of the base at a position where they can support the substantially intermediate portion 8c in the direction. That is, in the workbench of this embodiment, the blade roll 8 (for example, the length 29
Each of the columns (21, 31, 41) is formed for exclusive use and is capable of supporting a total of three positions of both ends 8a, 8b and almost the intermediate part 8c according to the length of the blade roll 8. Is fixed to the base 1 by bolting. In that case, the receiving stands (22, 32, 42) of the respective supporting stands (2, 3, 4) are arranged in a straight line in a plan view.

Further, in this embodiment, of the three support bases (2, 3, 4) in total, the end support base 2 at one end (left end in FIG. 1) is a support base as shown in FIG. A pedestal fixing type in which 22 is fixed to the column 21 with bolts 23 is adopted, and the end support base 3 and the intermediate support base 4 at the other end (the right end in FIG. 1) are used.
As shown in Fig. 3 and Fig. 4, respectively.
A movable pedestal mounted so that the (2, 42) can be slid vertically with respect to the columns (31, 41) is adopted. In addition, when performing the tool replacement work of the tool roll 8 using this workbench, the pedestal movable type end support base 3 side is the attachment / detachment side of the knives 82, and the pedestal fixed end support The base 2 (the left end support base in FIG. 1) is installed near the end of the base 1, and the other two support bases (4 and 3) are based on the installation position of the end support base 2. Are installed at predetermined positions in the length direction of the base, and it is sufficient to attach and detach the tool between the pedestal movable end support 3 and the handrail 12 (right handrail in FIG. 1). Space is secured.

The pedestal 22 on the side of the pedestal fixed type end support 2 is appropriately height (height H = about 450 mm) from the upper surface of the base 1 as shown in FIG.
It is fixed only in the levitated position. This cradle
Reference numeral 22 denotes a shaft end portion of the central shaft 81 which is the end portion 8a of the blade roll 8.
A U-shaped receiving groove 24 having an inner diameter substantially the same as the outer diameter of 81a is formed. Further, an opening / closing member 25 having a rod shape or an elongated plate shape for opening / closing the upper opening 24a of the receiving groove 24 is provided on the upper portion of the receiving table 22. That is, the opening / closing member 25 has one end side pivotally supported by the shaft 26 on the one side upper surface 22a sandwiching the receiving groove 24 of the receiving base 22 and the other end side other side sandwiching the receiving groove 24 of the receiving base 22. The lock member 27 is attached to the upper surface 22b so as to be releasably locked. The lock member 27 is a tightening type with a bolt 28 and a nut 29. The opening / closing member 25 is provided in the receiving groove 24 so as to have an end portion (shaft end portion 81) of the blade roll 8 therein.
In the state where (a) is fitted, when the upper opening of the receiving groove 24 is closed and locked by the lock member 27 as shown by the solid line, the end 81a of the blade roll 8 is prevented from floating in the receiving groove 24. You can When opening and closing the opening / closing member 25, the nut 29 of the lock member 27 is loosened.
If 27 is tilted outward as shown by the chain line 27 ', the opening / closing member 25 can be opened by arc-rotating to the position shown by the chain line (position 25').

Receiving pedestal movable pedestal 3 and intermediate supporting pedestal 3
As shown in FIGS. 3 and 4, the eaves-shaped members 2, 42 have an arcuate recess (32a, 42a) formed on the upper surface thereof. These two pedestals (32, 42) are the columns (3
The pedestal lifting device (33, 43) can be used to lift and lower the device (1, 41). Movable cradle end support 3
Side pedestal raising / lowering device 33 and intermediate support 4 side pedestal raising / lowering device 43
And those having the same structure as each other are used. The respective pedestal starting devices 33, 43 are provided with a pair of left and right vertically oriented guide rails (37, 37, 47, 47) provided on columns (31, 41). ), A vertically oriented screw rod (38, 48), a handle (39, 49) for rotating the screw rod, and a slider (34, 44) vertically aligned along a guide rail (37, 37, 47, 47). Screw rod (38,48)
And a threaded cylinder (36, 46) that is screwed into. Since the cradle lifting device 33 on the end support base 3 side and the cradle lifting device 43 on the intermediate support base 4 side have the same structure, the structure of the cradle lifting device 43 on the intermediate support base 4 side The description will be made with reference to the description of the cradle lifting device 33 on the side of the end support 4. The pedestal 32 is integrated with the slider 34 by bolting. A total of four wheels 35 are attached to the slider 34, and two wheels 35, 35 on each of the left and right wheels are provided on the column 31.
It is in sliding contact with each of the guide rails 37, 37 on the side. Slider 3
The 4 and the screw cylinder 36 are integrated by means such as welding. The upper end and the lower end of the screw rod 38 are supported so as to be rotatable on the spot between the upper portion of the column 31 and the upper surface of the base 1, respectively, and the screw rod 38 is rotated by a handle provided on the upper end of the screw rod 38. Is ready to go. When the handle 39 is rotated clockwise, the screw rod 38 is rotated clockwise so that the screw cylinder 36, the slider 34, and the pedestal 32 are raised. Conversely, when the handle 39 is rotated counterclockwise, the screw 39 is rotated. The cylinder 36, the slider 34, and the pedestal 32 are adapted to descend.

The method of using the workbench for changing blades will be described. When the blade roll 8 to be handled has a large weight, for example, as shown in FIG. 1, a crane K having the blade roll 8 installed in a factory is used. Use each of the supports of the workbench (2,3,
4) Suspend to the top. Then, the one end 8a of the blade roll 8 is fixed to the pedestal receiving groove of the pedestal fixed side end support 2 (FIG. 2).
The upper opening 24a of the receiving groove 24 is fitted into the receiving groove 24 by the opening / closing member 25.
Closed (locking the open / close member with the lock member 27),
One end of the blade roll 8 is attached to the receiving base 32 of the one end supporting base 2.
Hold it so that it does not come off. In addition, each of the receiving bases 32 and 42 of the other two supporting bases 3 and 4 (may be only one receiving base 32 or 42) simply supports the lower surface of the end 8b or the intermediate portion 8c of the cutter roll 8. Good. Then, when replacing the blade 82 of the blade roll 8 supported on the workbench, first, the blade roll 8 is first supported by the pedestal 22 of the pedestal fixed end support base 2 and the pedestal 42 of the intermediate support 4. Support at two points. That is, the handles 39 and 49 of the cradle lifting devices 33 and 43 are operated to support the lower surface of the intermediate portion 8c of the cutter roll 8 by the cradle 42 on the side of the intermediate support 4, and the cradle movable end portions. The receiving table 32 of the supporting table 3 is lowered downward as shown by a chain line 32 'in FIG.
In this state, the screw ring 84 on the blade detaching side of the blade roll 8 is unscrewed to sequentially detach and attach the blade 82 and the spacer 83 in the range from the edge 8b side of the blade detaching side to immediately before the supporting position by the intermediate support 4. Pull out outward from the side end 8b. still,
In this state, the blade 82 and the spacer 83 located on the pedestal fixed end supporter 2 side with respect to the support by the intermediate supporter 4 cannot be slid to the detachable side end 8b side. Next, after the pedestal 32 of the pedestal movable end support 3 is moved upward by operating the handle of the pedestal lifting device 33, the pedestal 32 supports the edge 8b of the blade detachment side of the blade roll 8, The pedestal 42 on the side of the intermediate support 4 is operated by the handle of the pedestal lifting device 43, and the chain line in FIG.
As shown by 42 ', the blade 82 and the spacer 83 remaining around the central axis in that state are slid to the blade attaching / detaching side. After that, the cradle 42 of the intermediate support base 4 is again moved upward to support the lower surface of the intermediate portion of the blade roll 8 and the cradle 32 of the end support base 3 is lowered to bring the blade 82 closer to the blade attaching / detaching side. And the spacer 83 in sequence to the end 81 of the central shaft 81
Remove from b. If the blade 82 still remains around the central axis 81, the blade 82 can be completely removed by repeating the support changing operation of the end support base 3 and the intermediate support base 4. Further, in order to fit a new blade 82 around the empty central axis 81, the support changing operation of the end support base 3 and the intermediate support base 4 is performed as described above, so that a new blade 82 is sequentially mounted. Can be made.

As described above, according to the illustrated tool changing workbench, there is no need to manually support the tool roll 8 when changing the tool 82 of the tool roll 8, so that only one worker can carry out the tool work with light work. The replacement work can be performed, and even if the blade roll 8 has a large diameter (heavy weight), the workability of the blade replacement work is not deteriorated. In addition, when the outer diameter of the blade 82 of the blade roll 8 is increased, there is an advantage that the abrasion of the blade is delayed and the blade replacement period is extended.

In the illustrated embodiment, two of the three support bases 2, 3, 4 are used.
Although only one support base 3 and 4 has a cradle lifting function,
It is also possible to provide each of the three support bases with a cradle lifting device. Further, in the illustrated workbench for blade replacement, the support columns (2, 3, 4) are fixed on the base 1 and are configured only for a certain length of blade roll. When the columns (21,31,41) of the bases (2,3,4) are installed so as to be slidable in the length direction with respect to the base 1, the blades of the blade rolls 8 having different lengths on one workbench It can be applied for replacement.

[Brief description of drawings]

FIG. 1 is a side view of a workbench for replacing a blade in a blade roll according to an embodiment of the present invention, and FIGS. 2, 3, and 4 are II-II, III-III, and IV- of FIG. 1, respectively. FIG. 4 is a sectional view taken along line IV, and FIG. 5 is a side view in which the upper half of the blade roll processed by the workbench for blade replacement shown in FIG. 1 …… Base 2,3 …… End support 4 …… Intermediate support 8 …… Cutter roll 8a, 8b …… End 8c …… Intermediate 21,31,41 …… Post 22,32,42 …… Cage 33,43 …… Ceiling lift 39,49 …… Handle 81 …… Center axis 82 …… Cutting tool

Claims (1)

[Scope of utility model registration request] 1. A blade roll (8) formed by inserting a large number of ring-shaped blades (82, 82 ...) Around a central axis (81) in order from the end side of the central axis (81) coaxially. ) On the base (1), the both ends (8a, 8b) in the length direction of the blade roll (8) and the middle portion in the length direction of the blade roll (8) ( 8c) is provided with each end support base (2, 3) and intermediate support base (4) capable of supporting the blade roll in a floating state, and at least one of the two end support bases (2, 3) (32, 42) for receiving the blade roll (8) on the end support base (3) and the intermediate support base (4), and the support base (32, 42) can be slid vertically. (31,41) and guides (32,42)
Pedestal lifting device (3
3, 43) and a workbench for replacing a blade in a blade roll, respectively.