JPS59140010A - Turning device for wood - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a wood rounding device.

Conventionally, as a device for cutting a wood (log) to be cut into a constant circular cross section over its entire length, a woodworking lathe is generally used, which cuts the wood by rotating the wood in a fixed position and moving a cutting tool laterally. However, when cutting relatively long logs with partial unevenness or slight curvature, centering is extremely difficult and time-consuming, and the cutting process is performed in several stages from rough machining to finishing. In addition, when wood products are used for purposes such as stakes for street trees or playground equipment in parks, the wood must be cut into a certain circular shape. There are cases where there is no problem even if there is some curvature as long as the cross section is cut, but even in such cases, the above lathe always cuts the wood into a straight cylindrical shape, so there is no waste of material. There were drawbacks such as the occurrence of

In addition, as a round cutting device other than a lathe, first cut two or four places on both sides of the wood to be cut into a flat surface □ to facilitate centering, and then feed the wood linearly to the cutting part using a feeding device. There is a device that uses a rotary blade in the cutting section to make circular cuts, but this device requires preliminary processing to cut the wood into a flat surface, which is inefficient and wastes materials. There were drawbacks such as.

In view of these circumstances, the present invention enables long wood with curves and unevenness to be easily cut into a circular cross section with a constant diameter over the entire length without requiring troublesome centering work or preliminary processing. To provide a device that can rationally shave wood with less material waste.

That is, the first invention includes a cutting part for round cutting, which is driven by a cutting blade drive device and rotates on a predetermined circumference, or has a plurality of cutting blades, and a wood to be cut, which is held between both sides of the cutting part and which rotates on a predetermined circumference. A pair of feed rollers are provided at multiple locations each at the front and rear of the cutting portion so as to feed along the axis of the cutting portion, a drive device that rotates these feed rollers, and a pair of these feed rollers. and a roller support mechanism that individually supports each roller, and each roller support mechanism has a pair of feed ports positioned symmetrically with respect to the axis at a predetermined interval, and is provided with an elastic support body.
The present invention is characterized in that a pair of feeders is supported so as to be movable in directions away from each other with equal supporting force. A second aspect of the present invention is that in the wood rounding device described above, at least the plurality of pairs of rollers on the front side of the cutting part that direct (pull) the wood to be cut toward the cutting part are provided.
Each of the roller support mechanisms is characterized in that the supporting force of the elastic support can be adjusted individually.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a cutting part for round cutting equipped at a predetermined location of the main body frame 2, and as will be described in detail later,
The cutting part 1 is configured to cut wood into a circular cross section by rotating the cutting blade, and a pair of upper and lower feeders [1-ra 30.30' are provided in front and rear of the cutting part 1, respectively.
A plurality of roller pairs 3a to 3h are arranged at appropriate intervals. These roller pairs feed the wood approximately along the direction of the axis 10 of the cutting section 1 while sandwiching the wood from both sides with the upper and lower rollers 30, 30'. Each pair of rollers 3a to 3d at the front of the cutting section 1 feeds the wood into the cutting section 1, and each pair of rollers 3e to 3h at the rear of the cutting section 1 passes the wood through the cutting section 1. It plays the role of sending out wood. These feed rollers 30..., 30'...
Each rotating shaft 31...

31' pass through arc-shaped elongated holes 22 provided in the front plate 21 of the main body frame 2.

As shown in FIG. 2, behind the front plate 21 of the main body frame 2, there are support mechanisms 4a to 4h that individually support each pair of rollers 3a to 3h, and each roller 30..., 30'.
A motor 5, a transmission 50, and a transmission mechanism are provided as a drive device for rotating... Each of the support mechanisms 48 to 4h has a pair of upper and lower feed rollers 30.
．． 30' are positioned symmetrically with respect to the axis 10 at predetermined intervals, and both feed rollers 30 and 30' are supported so as to be swingable in a direction away from each other by the supporting force of an elastic support body. ing. In this case, it is particularly desirable that the supporting force of the resilient support body be individually and arbitrarily adjustable at least in each of the support mechanisms 48 to 4h on the front side of the cutting section. In this example,
J for each support machine 4ft348~4h including the rear side of the cut product
Each of the air cushion cylinders 40 serving as a support having elastic horns contains air at an appropriate pressure.
The supporting force can be adjusted by adjusting the air pressure in advance. And main frame 2
The fixed shaft 4L 41' fixed to the feed roller 3
The movable bracket 42.4 is arranged so that the movable bracket 42.4 can swing in a circular arc direction centered on the fixed shaft 41.41'.
A pair of upper and lower rollers 30 and 30' are rotated by one air cushion cylinder 40, with the roller rotation shafts 31 and 31' oscillating in conjunction with each other via the rollers 2' and 2'.
The same support force is applied to the

The specific structure of these mechanisms will be explained with reference to FIGS. 3 to 6. In each of the roller support mechanisms 4a to 4h, fixed shafts 41 and 41' are fixed to the front plate 21 of the main body frame 2. A movable bracket 42, 42' for roller rotation and mounting is attached to. This movable bracket 1-42.42' includes a cylindrical shaft portion 42a rotatably fitted to a fixed shaft 41.41', an arm portion 42b protruding from the circumferential surface of the cylindrical shaft portion 42a, and an arm portion 42b. A roller rotation shaft 31.31' is rotatably supported on the bearing portion 42c. In addition, each cylinder shaft portion 4 of the upper and lower movable brackets 42.
Attached to 2a are sector-shaped gears 43, 43' that mesh with each other. On the other hand, the tips of the screws 1 to 40a of the air cushion cylinder 40 are pivotally connected to the bearing portion 42c of the lower bracket 42', and the base end of the cylinder 40 is pivotally connected to the support rod 44. There is. thus,
As shown in FIG. 6, a pair of upper and lower rollers 30.
Under normal conditions, the rollers 30 and 30' are supported by the air cushion cylinder 40 with a predetermined distance between them, and when the rollers 30 and 30' are pushed outward against the supporting force, both rollers 30 .30' interlock with each other l111Il
The cushion cylinder 40 is compressed, and a corresponding restoring force is applied to both rollers 30, 30'. Both rollers 3 above
The normal interval of 0.30' can be adjusted in advance by operating the handle, depending on the thickness of the wood to be cut. That is, the support rod 44 is connected to the fixed support frame 2.
3 and has a threaded portion 45 at one end.
The field threaded cylinder 46 is screwed into a female threaded cylinder 46 rotatably mounted on the side wall 24 of the main body frame 2.
A handle 47 is attached to the handle. When the handle 47 is operated, the support rod 44 slides, and the base end pivot portion of the air cushion cylinder 40 moves accordingly, thereby adjusting the distance between the rollers 30, 30'. In this case, the base end portions of the near cushion cylinders 40 of each roller support mechanism 4a to 4h are supported by a common support rod 44, so that the above-mentioned adjustment by handle operation is possible for each roller support mechanism 4a to 4h. This is done simultaneously for 4h.

Furthermore, each air cushion cylinder 40 is individually supplied with air at a desired pressure in advance by an air supply means (not shown) whose pressure can be adjusted.

As a transmission means between each feed roller 3o..., 30'... and the motor 5 for low rotation and the speed change 450,
A vertical fixed shaft 41 that is connected to the roller support mechanism 4a on one end side.
47', cylindrical blocks 51 and 51' are rotatably attached, and the lower cylindrical block 51' is interlocked with the drive shaft of the transmission 50 via sprockets 52, 53 and a chain 54, and the upper and lower cylindrical blocks 51.51' is gear 55
．． 55'. The cylindrical blocks 51 and 51 are arranged on the upper side and the lower side, respectively.
' and each roller rotating shaft 31..., 31'... are interlocked by sprockets 56, 57 provided respectively and chains 58, 59... wrapped around these, and the sprockets 57, 31'... In between, there is a swing cylinder for tension elastically supported by a spring (not shown) so that the chain 59 can maintain its winding state even when the feed roller swings. An auxiliary spout [Kokutsu l-60...] is arranged.

d5, the feed roller 30.30' has a shape with a small diameter for medium heat and a man-made structure on both sides to prevent the wood from falling off when feeding the wood, and its surface has a shape that prevents the wood from slipping. Therefore, it is desirable to provide a large number of grooves or unevenness (not shown).

In addition, as shown in FIG. 7, the cutting section 1 includes a drum 12 rotatably attached to a cylindrical support frame 11 fixed to the main body frame 2. The cutting blade 1 is connected to the front end of the drum 12 via a bracket 15.
6 is attached so that its position can be adjusted in the radial direction. If necessary, a cylindrical or ring-shaped guide part (not shown) may be provided at the rear end of the cutting part 1 to prevent wobbling when the wood is taken out.

In the above structure, air cushion cylinders 40 for each of the roller pairs 3a to 3d on the wood feeding side...
The supporting force of ・ may be kept the same, but in order to increase the alignment effect of the wood relative to the cutting part 1, as will be described later, the supporting force of the 0-ra pair 3d closest to the cutting part 1 should be increased. ,
It is made larger than the supporting force for the other wood feeding roller pairs 3a to 3c, and further, from the front, the air cushion cylinders 4o of these support rods M44a to 4d...
You can also gradually increase the air pressure.

Next, the operation of this device will be explained.

The wood to be cut 70 is supplied from the left side as seen in FIG.
As the feed rollers 3o, 30', . In this case, each roller 30..., 30'...
Even if the lumber 70 has some protruding parts, variations in thickness, curvature, etc., the lumber 7o can be fed without any problem by swinging the rollers 30, 30' accordingly. Moreover, a pair of upper and lower rollers 3o
, 30' are disposed symmetrically with respect to the axis 10, and both rollers 30, 30' are equally supported elastically by an air cushion cylinder 40, so that a restoring force or movement corresponding to the amount of rocking is generated. In other words, a force acts to align the center of the main shrine 70 with the axis 10. Therefore, for example, the eighth
Even if the main shrine 70 is slightly curved as shown in the figure,
The positional deviation of the cross-sectional center of each part of the book+J 70 with respect to the axis 10 can be made small. In particular, the cutting part 1
If the supporting force of the air compressor ring 40 is set to a large value with respect to the ``1-L pair/ld'' closest to , the positional displacement prevention effect in front of the cutting part 10 can be greatly enhanced.

If the supporting force of each support mechanism can be adjusted arbitrarily as described above, it becomes possible to adjust and change the supporting force setting conditions in accordance with the request.
It is necessary to adjust the supporting force appropriately depending on the hardness and strength of the material.

In this way, the wood 70 can be properly fed into the cutting section 1 and the main hovel 70 can be easily cut into a circular cross section by the rotating cutting blade 16 without requiring troublesome centering work or the like. Further, as a result, the wood 70 is shaved into a circular cross section with some curvature remaining, but this does not pose a problem when applied to applications where curvature as described above is acceptable. Rather, in this case, since the cutting allowance is reduced and made uniform, round cutting can be easily performed in one cutting operation, and material waste is also prevented.

In the above embodiment, both the upper and lower rollers 30, 30' are supported by one air cushion cylinder 40 in each of the roller support mechanisms 4a to 4h, but both the upper and lower rollers 30, 30' are It may be supported by a separate elastic support having a supporting force of 100. In addition to the air cushion cylinder 40, hydraulic pressure, a spring, or the like may be used as this support.

As described above, in the device of the present invention, the feed rollers arranged in pairs at multiple locations sandwich and feed the water bottle from both sides, and the cutting blade rotating in the cutting section cuts the water bottle, and the feed roller is made of elastic material. It is made to be able to swing freely, and a force is applied to align the center of the wood with the axis of the cutting part.

Therefore, it is possible to round the wood much more easily and rationally than with conventional devices, without requiring any work such as cutting or cutting. In particular, if the supporting force of each supporting machine 114 is made adjustable, it can be adjusted according to the strength of the wood, etc., and the pair of feed rollers closest to the cutting part on the feeding side of the wooden shed can be adjusted. It is also possible to increase the accuracy of the alignment of the wood with respect to the cutting part by increasing the supporting force against the rollers or by increasing the supporting force against these rollers in order.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a front view of the entire device, Fig. 2 is a rear view thereof, and Fig. 3 is an enlarged cross-sectional plan view of the main part.
Fig. 4 is an enlarged side view of the same, Fig. 5 is an enlarged longitudinal sectional front view of the same, Fig. 6 is an enlarged longitudinal sectional front view of the roller support mechanism, Fig. 7 is an enlarged sectional view of the cutting part, and Fig. 8 shows the state of use. FIG. 1...Cutting part, 30.30'...Feed roller, 4a
~4g)...Roller support mechanism, 40...Air cushion cylinder, 5...Roller rotation drive motor, 50
···transmission. Patent applicant Koshi Blazer Ping Guni 41 Co., Ltd.
” Commissioner of the Japan Patent Office Kazuo Wakasugi 1. Indication of the case Patent Application No. 15077 of 1982 2 Name of the invention Irrigation rounding device 3 Relationship with the amendment person case Name of patent applicant Koshiibu Co., Ltd. leatherhing 4, agent

Claims (1)

[Scope of Claims] 1. A cutting part for round cutting which is driven by a cutting blade drive device and rotates on a predetermined circumference - or has a plurality of cutting blades, and a cutting part for round cutting which is driven by a cutting blade drive device and rotates on a predetermined circumference, and a cutting part for round cutting which is driven by a cutting blade drive device and rotates on a predetermined circumference. A pair of feed rollers are provided at multiple locations in front and rear of the cutting portion so as to feed along the axis of the cutting portion, a drive device that rotates these feed rollers, and a pair of each of these feed rollers. and a roller support mechanism that individually supports the pair of feed rollers, each of which has a pair of feed rollers positioned symmetrically with respect to the axis at a predetermined interval and in an Iζ state by an elastic support. , oscillate the pair of rollers with the same supporting force in a direction that separates them from each other W)J'
ii A wood rounding device characterized by its support. 2. A cutting part for circular cutting which is driven by a rotary blade drive device and rotates on a predetermined circumference, or has a plurality of cutting blades, and a cutting part for round cutting which is driven by a rotary blade drive device and rotates on a predetermined circumference, and a cutting part for round cutting which has a plurality of cutting blades, and a cutting part that is driven by a rotary blade drive device and rotates on a predetermined circumference while holding the wood to be cut from both sides and about the axis of the cutting part. A pair of feed rollers are disposed at multiple locations at the front and rear of the cutting section so as to feed along the cutting direction, a drive device that rotates these feed rollers, and a roller that individually supports each pair of these feed rollers. Each roller support mechanism has a pair of feed rollers positioned symmetrically with respect to the above-mentioned axis at a predetermined interval, and supports a pair of feed rollers with the same support force using an elastic support body. In a wood rounding device in which rollers are swingably supported in directions apart from each other, each roller for a plurality of pairs of rollers on the front side of a cutting section that cuts at least the wood to be cut and sends the wood in a forward direction. The support mechanisms are individually
A wood rounding device characterized in that the supporting force of a support body having elasticity can be arbitrarily adjusted.