JPH0153161B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing bamboo strips used for bamboo blinds or kite bones.

Conventional bamboo bar manufacturing equipment cuts bamboo bar material from one side of the bamboo bar material moving in the longitudinal direction using rotating cutters in which cutters with thin serrated teeth are lined up at regular intervals on the outer periphery. It is designed to be divided into higo. In this case, the cutting depth of the cutter cannot be too deep, so the bamboo strip material, which is made by cutting the outer layer of the bamboo into strips, is fed in the longitudinal direction and cut into multiple strips by the rotating cutter.
Since the material is thin and must be cut into wide pieces, the number of bamboo strips that can be obtained from one material is small.
Most of the bamboo flesh is wasted. In addition, since the blade of the cutter is serrated, it is difficult for the cutting chips generated during cutting to escape, which may cause the cutter to overheat and burn the bamboo strips.If the blade becomes worn, it takes time to polish it. There are also problems.

This invention aims to solve the above-mentioned problems of the conventional bamboo stick manufacturing equipment, and consists of a feeding means for feeding strip-shaped bamboo stick material in the longitudinal direction, and one side of the bamboo stick material sent by this feeding means. A rotary cutter that forms a plurality of parallel longitudinal grooves on a surface, and a rotary cutter that forms a plurality of parallel longitudinal grooves that correspond to the grooves on the other surface of the bamboo bar material. The bamboo strip material is divided into a plurality of bamboo strips by grooves, and each rotating cutter is detachably tightened by one support ring fixed to a rotating shaft and a nut screwed into the same rotating shaft. It consists of an arc-shaped cutter member detachably fixed between the other support ring, and the edge of this arc-shaped cutter member is the cutting edge, and this cutting edge is positioned by the protrusion of each support ring, and the outer periphery of the support ring is A plurality of circumferential grooves are formed on the outer periphery of the arc-shaped blade member, the cutting edge is divided into a plurality of parts by the grooves, and a space communicating with the outside is formed between the arc-shaped blade member and the rotating shaft. A large number of bamboo sticks can be obtained by cutting the thick bamboo stick material made of skin and flesh at narrow pitches, and since both the front and back of the arc-shaped blade member with the cutting edge are constantly in contact with air, there is no risk of overheating. Moreover, since the cutting waste is well discharged, there is no fear that the bamboo sticks will burn.

An embodiment of this invention will be described below with reference to the accompanying drawings.

In FIG. 1, A is a feeding means, which is rotatably attached to a frame (not shown) and is made of urethane rubber and is attached to a pair of front and rear metal feeding rollers 1 and a bamboo strip material 2 on the rollers 1. The bamboo rod material 2 is sent in the direction of the arrow by driving these rollers 1 and 3 in the direction of the arrow with an appropriate drive device.

In front of the feeding means A is a receiving plate 4 fixed to a frame (not shown), above which a rotary cutter B is arranged, further in front of which is a receiving plate 5 also fixed to the frame. A rotating cutter B is provided below.

Further, in front of the front receiving plate 5 and the rotary cutter B, there are arranged a pair of front and rear metal feed rollers 6 for feeding out the cut bamboo sticks 2', and a urethane rubber feed roller 7 above them. driven in the direction.

The rotary cutter B is as shown in FIGS. 2 to 4. In these figures, 11
is a rotating shaft supported by a bearing provided on a frame (not shown), a part of which is integrally provided with a flange 12, and the outer surfaces of a pair of left and right support rings 13 fitted on the rotating shaft 11 are attached to the flange 12. and male screw 1 of shaft 11
It is designed to be supported by a nut 15 screwed into 4.

Reference numeral 16 denotes an arc-shaped blade member fixed between the left and right support rings 13, and arc-shaped protrusions 1 are provided on both sides of the blade member.
7 are formed, and two sets of arcuate guide grooves 18 into which the protrusions 17 are slidably fitted are formed on opposing surfaces of each support ring 13 as shown in FIG. The ends of each guide groove 18 are made to reach the outer periphery of the support ring 13 by being formed eccentrically by a certain amount with respect to the center.

Therefore, the protrusions 17 on both sides of the two blade members 16 are fitted into the guide grooves 18 of each support ring 13 and the nuts 1 are inserted.
5, each member 16 is tightened and fixed by the support ring 13.

In addition, each support ring 13 and shaft 11 are connected to a key 19.
The cutting edge part 20 of each blade member 16 is provided on a part of the opposing surface of each support ring 13.
A pair of protrusions 21 are provided for positioning. Furthermore, a plurality of circumferential grooves 22 are formed on the outer periphery of the blade member 16.

The upper surface of the receiving plate 4 is flat, but the lower surface of the receiving plate 5 has grooves 2 on the outer periphery of the cutter member 16 of the rotary cutter B.
The same number of grooves 23 having the same spacing and the same width as 2 are formed in parallel.

As shown in Fig. 1, the upper rotary cutter B is rotated clockwise as shown in the figure, so install it so that the cutting edge 20 is in the clockwise direction, and the lower rotating cutter B is rotated counterclockwise, so the cutting edge 20 is rotated clockwise. Turn it in the opposite direction.

The device of the present invention has the above-mentioned configuration, and feeds the strip-shaped bamboo bar material 2 of a certain width between the upper and lower feed rollers 3 and 1 from the left side of FIG. When feeding the material 2 to the right in Figure 1, the material 2 is first placed on the receiving plate 4 and moves, and the cutting edge 20 of the upper rotary cutter B, which is rotating in the direction of the arrow in Figure 1, touches the top surface of the material 2. A groove 24 is formed by cutting as shown in FIG.

In this way, the material 2 in which the groove 24 is formed from the upper surface to the middle of the thickness moves to the lower surface of the next receiving plate 5,
As shown in FIG. 6, the grooves 24 of the material 2 engage with the protrusions between the grooves 23 on the lower surface of the receiving plate 5 and move while being positioned, and at the same time the cutting edge 20 of the lower rotary cutter B is moved. Cut into the bottom surface and make groove 2 into material 2 from the bottom side.
Cut 5 parallel to each other.

In this way, grooves 24 and 25 are cut from the top and bottom of the material 2, and these upper and lower grooves 24 and 25 are connected.
The material 2 becomes a plurality of bamboo bars 2', which are sandwiched between upper and lower feed rollers 7 and 6 and sent to a desired location.

As described above, the device of the present invention cuts the cutting edge of the rotary cutter from above and below the bamboo strip material to form grooves in the upper and lower directions to produce a plurality of bamboo strips, so even if the bamboo strip material is thick Can be cut sufficiently. Therefore, the number of bamboo sticks that can be obtained from the bamboo stick material is greater than before, and each bamboo stick consists of skin and flesh, so it is of high quality.

In addition, the blade member of the rotary cutter is arc-shaped and there is sufficient space between the blade member and the rotating shaft to communicate with the outside, so air circulation is good and cutting waste is quickly discharged, allowing the rotary cutter to rotate at high speed. There is no risk of the cutting edge heating up and burning the material.

Furthermore, the blade member is arc-shaped, and there is no fear that the rear outer circumferential portion of the blade tip will hit the surface of the material.

Therefore, polishing of the cutting edge only needs to be done on the front side of the cutting tool member, and polishing is easy. Whenever the cutting edge gets worn, remove the nut, remove the cutting tool member, polish the cutting edge, and then reinstall it between the support rings. By positioning the cutting edge using the protrusion, cutting can always be performed under constant conditions, and the cutting tool can be used until it becomes short, making it extremely economical.

[Brief explanation of drawings]

Fig. 1 is a side view of the device of the present invention, Fig. 2 is an enlarged longitudinal sectional front view of the rotary cutter, Fig. 3 is a longitudinal sectional side view of the same, Fig. 4 is an exploded perspective view of the same, Fig. 5, Fig. 6 FIG. 2 is a longitudinal sectional front view showing a state in which grooves are formed in bamboo bar material. A... Feeding means, B... Rotating cutter, 2... Bamboo stick material, 2'... Bamboo stick, 11... Rotating shaft, 1
3... Support ring, 16... Arc-shaped blade member, 20
...Blade tip, 22, 23, 24...groove.

Claims (1)

[Claims] 1. A feeding means for longitudinally feeding a strip of bamboo strip material, a rotating cutter that forms a plurality of longitudinal grooves in parallel on one side of the bamboo strip material fed by this feeding means, and the other side of the bamboo strip material. A rotary cutter is provided for forming a plurality of longitudinal grooves parallel to each other on the surface of the cutter, and the bamboo strip material is divided into a plurality of bamboo strips by the grooves formed by the two cutters. The rotary cutter shall consist of an arc-shaped cutter member that is removably fixed between one support ring fixed to the rotation shaft and the other removable support ring tightened by a nut screwed into the same rotation shaft. The edge of the member is used as a cutting edge, and this cutting edge is positioned by the protrusion of each support ring so as to protrude from the outer periphery of the support ring. A bamboo bar manufacturing device in which the cutting edge is divided into a plurality of parts, and a space communicating with the outside is formed between the arc-shaped cutting tool member and the rotating shaft.