Manufacturing container or tube from paper; or other manufacturi – With cutting – breaking – tearing – or abrading – And with bending
Patent
1987-10-26
1989-07-11
LaRoche, Eugene R.
Manufacturing container or tube from paper; or other manufacturi
With cutting, breaking, tearing, or abrading
And with bending
493355, 493367, 83302, 83495, 83885, B26D 156
Patent
active
048467782
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a slitter scorer such as a corrugating machine which cuts a sheet of corrugated cardboard traveling continuously or scores the cardboard with depressed lines in the traveling direction thereof, and more particularly to such an apparatus including heads (rolls for forming depressed lines) which can be exchanged automatically.
PRIOR ART
A slitter scorer such as a corrugating machine which cuts a sheet of currugated cardboard traveling continuously or scores the cardboard with depressed lines in the traveling direction thereof is structured as shown in FIGS. 6 to 8, for example.
In FIGS. 6 to 8, heads H.sub.1 and H.sub.2 include rolls which score the sheet with depressed lines and are generally composed of at least a pair of rolls H.sub.1 and H.sub.2 having opposite outer uneven peripheries. The number of necessary rolls to be assembled in the heads is determined by the number of depressed lines. The upper and lower heads opposite to each other are set on predetermined positions of head rotating shafts S.sub.1 and S.sub.2 corresponding to positions on the sheet in which the depressed lines are formed.
The head rotating shafts S.sub.1 and S.sub.2 are both supported by an operation side frame 01 and a drive side frame 02 and are driven by a power unit disposed outside of the drive side frame 02.
Each time special depressed lines are required, a set of upper and lower heads is exchanged with another set of rolls having different uneven form.
Each of the rolls is formed in a unit structure as shown in FIGS. 7 and 8 and assembled by bolts 03 into the head when the head is exchanged. Accordingly, the operation of the machine is stopped to change the setting of the heads.
In the conventional apparatus described above, when the special depressed lines are necessary, exchange of heads having another form requires disassembling and assembling of each of the heads (rolls). Accordingly, it takes a long time to exchange the heads. Further, the exchange of the heads necessarily requires stoppage of the machine and accordingly the production efficiency is extremely reduced particularly in the case of a small lot of production.
DISCLOSURE OF THE INVENTION
The slitter scorer according to the present invention does not use conventional heads (rolls) which are divided to be disassembled and assembled and shifts heads on head rotating shafts onto head holding shafts of a head exchanging device to automatically exchange the shifted heads with other heads mounted on other head holding shafts as a cartridge collectively.
The heads composed of upper and lower rolls are structured into a cassette. The cassette is moved in a perpendicular direction to movement of a sheet of corrugated cardboard to be assembled into a machine and the cassette is removed from the machine to be exchanged with another cassette.
This head exchange operation can be made without stoppage of the machine.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a slitter scorer including a head exchanging device according to the present invention;
FIG. 2 is a front view of a carrier portion of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a front view of FIG. 1;
FIG. 5 shows in detail a part of B of FIG. 4;
FIG. 6 illustrates a conventional head exchanging system;
FIG. 7 is a sectional view taken along line D--D of FIG. 6; and
FIG. 8 is a perspective view of a roll head.
BEST MODE FOR IMPLEMENTING THE INVENTION
In FIGS. 1 to 5, X represents a head exchanging device portion, Y represents a slitter scorer portion, SA and SB represent head rotating shafts, HA and HB represent roll heads for depressed lines, Ha and Hb represent roll heads for exchange, 1a and 2a represent head holding shafts, 1b and 2b represent head holding shafts, 3a and 3b represent rotary frames, 4 represents a pusher, 6 and 7 represent pushes, 8 represents a motor, 9 represents a gear (small), 10 represents a gear (large), 11 represents a motor, 12 represents a sprocket, 13 represents a chain
REFERENCES:
patent: 3882765 (1975-05-01), Tokuno
patent: 4010677 (1977-03-01), Hirakawa et al.
patent: 4033217 (1977-07-01), Flaum et al.
Hirakawa Tadashi
Oku Yukio
Seki Yukuharu
LaRoche Eugene R.
Mitsubishi Jukogyo Kabushiki Kaisha
Pascal Robert J.
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