JPH0512123B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for shredding plate materials for supplying disposable chopsticks as semi-finished products.

[Conventional technology]

In order to obtain semi-finished disposable chopsticks (tapered sticks without grooves), the plate material to be conveyed is cut along cutting lines that are tilted alternately in different left and right directions with respect to a reference line that traverses the plate material. Must be disconnected. As this cutting device, a circular saw without a receiving blade, a sliding cutter, etc. are known.

[Problem to be solved by the invention]

In the conventional cutting device described above, the movable blade such as a saw blade or a slide cutter does not have a receiving blade, so there is a problem in the finish of the cut end of the plate material. Further, in the case of a saw blade, there is a problem that there is a lot of cutting waste and the yield of material is poor.

[Means to solve the problem]

In order to solve the above problems, the present invention includes a movable blade in which a plurality of shredding blades are arranged at equal intervals on a rotating body;
The present invention provides a shredding device that includes a receiving blade that shears the plate material between the movable blade and the movable blade. Regarding this point, the present invention tilts the transported plate material alternately in different left and right directions with respect to the reference line that crosses the plate material, as described above, by setting the mounting positions of the plurality of shredding blades. By shredding along the deviating cutting line and rotating the receiving blade to match the different left and right tilt deviation directions of the shredding blade, the cutting operation is achieved through cooperation between the movable blade and the receiving blade. The cutting edge is beautiful, and the yield of the material is improved. The means of the present invention includes a conveyance device that conveys a plate material, and a movable blade and a receiving blade that shred the plate material into tapered sticks; It has multiple shredding blades arranged at equal intervals with respect to the rotational trajectory, and the shredding blades leading and trailing in the rotational direction are sequentially alternated with respect to a reference line that crosses the plate material. The receiving blade is tilted in different directions on the left and right;
It is rotatably supported so as to tilt in both left and right directions with respect to the reference line, and rotates forward and backward in synchronization with the rotation of the movable blade to match each shredding blade that abuts against the receiving blade. The present invention is characterized in that it is provided with a rotary drive means for moving.

〔Example〕

An embodiment in which the present invention is applied to a shredding device for semi-finished disposable chopsticks will be described below based on the drawings.

First, before explaining the device, we will briefly explain the manufacturing process of the disposable chopsticks invented by the present inventor.
As shown in the figure, a log 1 cut to a predetermined length is prepared (Fig. 5A), and as described later, the log 1 is rotated around its axis and a fixed blade is attached to the circumferential surface of the log 1. Then, a strip-shaped board 2 is continuously cut from the outer circumference of the log 1, and after the board 2 is transported, it is cut into predetermined intervals to form a veneer 3 (FIG. 5B).
After this veneer material 3 is further conveyed, it is shredded into tapered stick shapes to produce semi-finished disposable chopsticks 4 (FIG. 5C). In this shredding, taking into account the yield of the veneer material 3, cutting is performed sequentially along cutting lines that are inclined in different left and right directions with respect to a reference line that crosses the veneer material 3. The semi-finished disposable chopsticks 4 are then cut at the outer peripheral corners to form a chamfered portion 5 (FIG. 5D).
In either process before or after, a pair of grooves 6 are formed along the central axis with the semi-finished product 4 in between, and the pair of grooves 6 are communicated with each other by leaving the tail end of the semi-finished product 4. Cut grooves 7 are formed, thereby obtaining disposable chopsticks 8 (FIG. 5E).

In the above disposable chopstick manufacturing process, the apparatus of the present invention is used to manufacture the disposable chopstick semi-finished product 4 shown in FIG. 5C. In this semi-finished product manufacturing process, the raw material may be the veneer material 3 as described above, but the strip-shaped board material 2 is immediately shredded to produce the semi-finished product 4 without intervening such a veneer material 3. It's good as well. Therefore, in the following description, both the strip-shaped plate material 2 and the veneer material 3 will be simply referred to as the plate material 2.

In FIGS. 1 and 2, the conveyance device 10 includes a conveyance table 11' and a pair of upper and lower feed rollers 11 and 12. The lower feed roller 12 is rotationally driven in the conveyance direction by a drive source 13 via an appropriate transmission mechanism, and the upper feed roller 11 is rotatably supported and urged downward via a resilient support means 14. . A movable blade 15 and a receiving blade 16 are installed on the delivery side of the feed rollers 11 and 12.

The movable blade 15 has a rotation locus 1 on the rotation shaft 17.
It has a plurality of (for example, four, although not shown) shredding blades 19 arranged at equal intervals with respect to the shredding blade 19a leading in the rotation direction and a shredding blade 1 trailing in the rotation direction.
9b are sequentially tilted in different left and right directions with respect to a reference line S that crosses the plate material 2. That is, when these shredding blades 19 pass through the receiving blade 16, as shown in the fourth figure, the first shredding blade 19a
passes through the cutting line 20a tilted to the left,
The second shredding blade 19b passes through a cutting line 20b tilted toward the right, the third cutting blade 19c passes through a cutting line 20c tilted toward the left, and the fourth cutting blade 19d (not shown) passes through a cutting line 20c tilted toward the left. The fourth blade) is installed so as to pass through the cutting line 20d tilted toward the right.

On the other hand, the receiving blade 16 is attached to a vertical axis 23 of a support member 22 that supports the blade 21, as shown in the third figure.
is rotatably supported by a base frame 24, and the blade 21 is tilted in both left and right directions with respect to the reference line through rotation of the vertical shaft 23. That is, the above-mentioned shredding blades 19a, 19b, 19
c, 19d pass through the blade 21, the cutting lines 20a, 20b, where the blade 21 is tilted
20c and 20d. In order to perform this rotation, the vertical shaft 23 is connected by a crank mechanism 26 to a wheel 27 that is rotationally driven by a drive source 25. At this time, the drive source 13 of the movable blade 15 and the drive source 25 of the crank mechanism 26 are interlocked, and the crank mechanism 26 rotates the vertical shaft 23 forward and backward in synchronization with the rotation of the movable blade 15. It constitutes a rotational drive means.
That is, one cycle of forward and reverse rotation of the receiving blade 16 corresponds to half a rotation of the movable blade 15. In addition, feed roller 1
2 as close to the blade 21 as possible, the support member 22 is formed to have an L-shaped cross section.

[Effect]

To explain the operation based on the above embodiment, the plate material 2
is conveyed from the conveyor table 11', passing between the feed rollers 11 and 12, and onto the receiving blade 16. This transportation is
Continuous conveyance may be performed in which the drive-side feed roller 12 is rotated continuously, or intermittent conveyance may be performed in which the feed roller 12 is intermittently rotated.

When the end of the plate material 2 protrudes from the blade 21 of the receiving blade 16 by a predetermined amount, the first of the rotating movable blades 15
The shredding blade 19a cuts the plate material 2 along the cutting line 20a. At this time, the blade 21 of the receiving blade 16 is on standby along the cutting line 20a via the crank mechanism 26.

Thereafter, the plate material 2 is conveyed by a predetermined amount by the feed rollers 11 and 12, and the blade 21 of the receiving blade 16 is rotated along the cutting line 20b via the crank mechanism 26. The second shredding blade 19b cuts the plate material 2 along the cutting line 20b.

As a result, the plate material 2 is shredded and the semi-finished disposable chopsticks 4a are cut off (FIGS. 3 and 4).

Thereafter, the plate material 2 is similarly carried out, and the blade 21 of the receiving blade 16 rotates along the cutting line 20c and the third shredding blade 19c passes through the blade 21 in a waiting state. While the blade 21 rotates along the cutting line 20d and is in a standby state, the fourth shredding blade 19d
passes through the blade 21 to shred the plate material 2 to cut off the semi-finished disposable chopsticks 4b and 4c, and thereafter the above operation is repeated.

FIGS. 6 and 7 show an embodiment in which a guide device 30 is attached to the conveying device 10. FIG. In this embodiment, a pair of upper and lower feed rollers 11, 12
A plurality of circumferential grooves 11a and 12a are formed respectively, and guide bodies 31 and 32 are placed along these circumferential grooves 11a and 12a. That is, the upper guide body 31 extends in a comb-teeth shape from the support rod 31', passes through the circumferential groove 11a of the feed roller 11, and extends upward near the receiving blade 16. In addition, the lower guide body 32
The feed roller 1 extends in a comb-like shape from the conveyor table 11'.
It extends to the vicinity of the receiving blade 16 through the circumferential groove 12a of No. 2, and its upper surface is flush with the blade 21. Thus, the plate material 2 is attached to the peripheral surfaces 11b and 12 of the feed rollers 11 and 12.
While being transferred by b, the upper and lower guide bodies 31, 32
In particular, since the vicinity of the sheared part of the plate material 2 by the movable blade 15 and the receiving blade 16 is sandwiched from above and below, the end part of the plate material 2 does not jump up during shearing and can be cut well.

〔Effect of the invention〕

As a result of the above configuration, the present invention has a movable blade 15 in which a plurality of shredding blades 19 are arranged at equal intervals on a rotating body, a receiving blade 16 that shears the plate material 2 between the movable blade 15, This shredding device is equipped with a plurality of shredding blades 19 that are installed and set so as to pass over cutting lines 20a, 20b, 20c, and 20d that are alternately tilted. When shredding along the cutting line, the receiving blade 16 is aligned with the passing of the shredding blade 19, and the cutting line 20a,
20b, 20c, and 20d, the movable blade 1 is rotated through a rotation drive means that rotates forward and backward to match
5 and the receiving blade 16 in cooperation with each other, the cut edges of the shredded product (semi-finished disposable chopsticks) are beautiful, and the material yield is improved. effective.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is a front view showing one embodiment of the present invention;
The figure is a right side view of the same, Figure 3 is an enlarged cross-sectional view showing the state at the time of shredding, Figure 4 is a plan view showing the cutting line tilted with respect to the plate material, Figure 5 A, B, C, D and E are perspective views of each process of manufacturing disposable chopsticks from raw wood, FIG. 6 is a vertical side view showing an embodiment in which a guide device is attached, and FIG. 7 is a vertical cross-sectional view of FIG. 6. 2... Plate material, 10... Conveying device, 11, 12...
...Feeding roller, 15...Movable blade, 16...Receiving blade,
19... Chopping blade, 21... Blade, 23... Vertical axis, 2
6... Crank mechanism (forward/reverse rotation drive means).

Claims (1)

[Claims] 1. Equipped with a conveyance device that conveys a plate material, and a movable blade and a receiving blade that shred the plate material into tapered stakes;
The movable blade has a plurality of shredding blades arranged at equal intervals with respect to the rotation locus on the rotary shaft, and sequentially cuts the plate material by using the leading shredding blade and the trailing shredding blade in the rotation direction. The receiver blade is rotatably supported so as to be tilted in both left and right directions with respect to the reference line; 1. A plate material shredding device comprising a rotary drive means that rotates forward and backward in synchronization with the rotation of a movable blade so as to match each shredding blade that collides with the blade.