JPH03121802A - Back-board processing device in lumber sawing machine - Google Patents

Abstract

PURPOSE:To discharge back boards being sawed down in a coming and going saw process to the same side and facilitate the transporting process of the back boards and the sorting of the products and the back boards by mounting a back-board receiving arm for receiving back boards being sawed and dropped into a running carriage such that it can be converted into a receiving position and a discharging position. CONSTITUTION:A running carriage 3 is supplied and mounted with lumber (logs) and when the running carriage is run while the left and right saws 12, 12 are rotated, both sides of the lumber are sawed and the back boards are dropped from the left and the right sides. At this time, when the back-board receiving arm 37 is in a receiving position of being projected into the dropping path of the back board, the back boards dropped are received by the back board receiving arm 37. Next, the lumber made into a Japanese drum-shaped lumber is turned at 90 degree and mounted on the running carriage 3 and when the carriage is run in the opposite direction in this state, the other both side surfaces are sawed and the back boards are dropped from the left and right side and since the back boards are received by the back-board receiving arm, when the back-board receiving arm is converted into a discharging position, the back boards in a coming and going process are discharged in the same place. Besides, when air cylinders 39, 39 are actuated expandingly, the back-board receiving arms 37, 37 are converted into a approximately horizontal receiving position and the downwardly inclined discharging position.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial field of application The present invention is directed to sawing a log back and forth using a pair of left and right saws, and then sawing off the backboard to either the feed side or the opposite side. This invention relates to a backboard processing device for a sawmill that discharges wood.

(B) Prior Art Conventionally, a sawmill is known in which a log is mounted on a truck that moves back and forth, and sawed into square pieces using a pair of saws located on both sides of the truck.

(C) Problems to be Solved by the Invention In the known sawmill, the backboard is ejected on the side opposite to the material supply side during the forward stroke, so the backboard discharge device is installed on the material supply side and the opposite side of the saw, respectively. In addition, when sawing a board on the outside of a pillar with large diameter wood, saw the back board in the forward stroke, and saw the inside part in the backward stroke to create a board with ears. If you want to obtain , the lumber board will be ejected from the feeder side, so if you indiscriminately saw wood of different diameters into square pieces, the back plate and lug board will be ejected from the feeder side. In order to separate and transport these, it is necessary to install a complicated sorting device.

(D) Means for Solving the Problems The present invention provides a lumber machine in which a sawing machine is provided on both sides of a running carriage that holds wood and moves back and forth, and the backboard that has been sawn and fallen by the running carriage is removed. By attaching the receiving back plate receiving arm so as to convert between the receiving position and the ejecting position, the back plate ejected by sawing in the forward stroke and the back plate discharged by sawing in the backward stroke can be transferred to the saw. The above-mentioned problem was solved by making it possible to concentrate the material on either the supply side or the opposite side and discharge it.

(e) Operation When lumber (logs) is supplied to the running trolley and the running trolley is run while rotating the left and right saws, both sides of the wood are sawn and the backboard falls from the left and right sides.

At that time, if the back plate bone arm is placed in a receiving posture projecting into the falling path of the back plate, the fallen back plate is caught by the back plate bone arm. Next, the wood used as drum material is rotated 90 degrees and attached to a running trolley, and when the running trolley is run in the opposite direction, the other two sides are sawn and the backboard falls from the left and right, and this backboard is received by the back plate bone arm, so when the back plate bone arm is converted to the ejection position, the back plate in the reciprocating stroke is ejected to the same location.

Note that if the back plate receiving arm is placed in the ejection position immediately after sawing in the backward stroke is finished, the back plate in the backward stroke will fall without being caught by the back plate receiving arm.

(F) Embodiment An embodiment of the present invention will be explained with reference to the drawings. Reference numeral 1 denotes a main frame having a pair of left and right rails 2. Rail 2.
Wheels 6 resting on 2 are rotatably attached, and are driven back and forth by a chino 7 driven by a motor to rotate in forward and reverse directions.

The saw machine 8 is mounted on the machines on both sides of the traveling carriage 3.
an underframe 9 that moves forward and backward relative to the underframe 9; a main shaft 11 supported on the underframe 9 and driven by a motor 10;
Circular saw 12.12 attached to 1 and step motor 14'+
It is composed of a walking shaft 15 that expands and contracts the interval between the circular saws 12.12 facing each other on the left and right sides by rotating the underframe 9.9 forward and backward with respect to the traveling cart 3 by forward and reverse rotation from m, and a suction cover 16. The circular saw 12 is mounted on the main shaft 11 by being sandwiched between a post 17 and a seat plate 18.

In front and behind each of the circular saws 12, 12, there are provided ruler plates 20, usually called sickles, respectively, and these ruler plates 20, 20, . Or a shaft 2 that is reciprocated by an appropriate drive device such as an electric motor or a fluid cylinder.
2, by rotating the hydraulic motor 21, the ruler plate 20.20 can be placed in a working position close to the outer periphery of the circular saw 12.12 and a retracted position in which it is raised and separated from the moving path of the wood. It is now possible to convert.

A fixed locking body 28 is erected at one end of the traveling carriage 3, and a movable locking body 30, which is moved back and forth by air cylinders, is erected at the other end.

Further, as shown in FIG. 2, the middle part of a horizontal arm 32 is screwed onto the rod of an elevating sill 31 attached to the traveling carriage 3, and a pair of left and right The base of the back plate presser 35.35 is pivoted so that it can move up and down, and these back plate pressers 35.35 are connected to the base of the back plate presser 36.3.
6, the arm 32 is interlocked with both ends of the arm 32.

Facing the above, on both sides of the lower part of the traveling carriage 3, the proximal portions of the back plate bone arms 37 having an inverted F-shape are pivoted by fulcrum shafts 38 so as to be vertically movable, and the back plate bone arms 37. 37
The base end of is a horizontal air cylinder 3 attached to the traveling truck.
9.39 (only one of which is shown), so when the air cylinder 39.39 is operated to extend and retract, the back plate bone arm 37.37 will be in the substantially horizontal receiving position shown in solid lines in Figure 1 and in the dotted line. Convert to the downwardly inclined ejection position shown.

In the drawing, 40 is a guide plate attached to both sides of the traveling trolley 3;
Reference numeral 41 designates a guide plate fixed to the machine frame on the outside of the traveling truck 3, with a path through which the back plate or plate material falls across, and 42 represents a material feeding device.

In the above-mentioned apparatus, the wood is placed on the traveling cart 3 by the material feeding device 42 and held by the fixed locking body 28 and the movable locking body 30, and the ruler plate 20 on the sawing side is placed in a lowered working position, When the traveling cart 3 is driven from the material feeding side (the right side in FIGS. 8 and 9) to the opposite side while the sawing machine 8 is being driven, if the diameter of the wood is small, the circular saws 12 and 12 will move on both sides of the wood. The back plate presser 35.35 moves up and rotates to hold the back plate in two places, front and back. When the forward sawing is completed, the back plate bone arm 37.37 is moved as shown in Figure 1. When the back plate is rotated downward to the ejecting position as shown by the chain line and the back plate presser 35.35 is rotated downward, the back plate slides down on the back plate bone arm 37.37 and is ejected.

In this state, the wood is rotated 90 degrees and fixed, the ruler plate 20 on the opposite side that has been lowered is rotated upward to take the retreat position, and the ruler plate 20 on the supply side is rotated downward to operate. When the traveling cart 3 is moved toward the supply side, the circular saw 12.12
sawn both sides of the drum-shaped piece of wood, and attached the backboard presser 35.
35 to hold the back plate, and before the sawing is completed, the back plate bone arm 3
7. Raise and rotate 37 to take the receiving position, and press the back plate presser 35,
35 is rotated downward, the back plate is received by the back plate bone arms 37... In this state, the sawn square timber is discharged to the other side of the timber supply device 42 (to the right when viewed from the lees feeding direction).

Next, another log is supplied to the traveling cart 3 and fixed, and when the forward stroke sawing is completed, the back plate presser 35.35 and the back plate arm 37.37 are rotated downward, and the back plate of this forward stroke is and,
The back plates that were received by the back plate bone arms 37, 37 in the previous reciprocating sawing process can be dropped all together on the opposite side of the sawing machine 8, and carried out by a suitable discharge conveyor.

In addition, when the back plate is to be discharged to the supply side and the product to the opposite side due to equipment arrangement in the factory, etc., the discharge position of the back plate and the product can be changed by changing the timing of changing the posture of the back plate bone arm 37. It is possible to perform discharge sorting with different types.

Also, when sawing large diameter wood into pillar material, circular saw 12.
12 is stepped wider by the thickness of the plate material than the dimension of the pillar material, and the back plate is sawed in the forward stroke as described above, but the back plate bone arm 3
7.37 leaves the back board in the ejection position and ejects it on the other side, the wood is held in the same position without turning, and the circular saw 12.1.2 is narrowed by the thickness of the board to be obtained. When you step forward and perform the sawing process in the reverse direction, the planks are sawn off from both sides of the wood.

At this time, sawing is carried out while holding the outer surface of the board with a back plate presser 35.35, and when this is released after sawing is completed, the board falls to the supply side. So, I rotated the wood 90 degrees and fixed it in place.
By performing a reciprocating saw similar to that described above, the back plate can be dropped to the opposite side and the board material can be dropped to the supply side.

In the above-mentioned embodiment, a circular saw was explained as an example of a saw, but the present invention can be applied to a sawmill that can saw both sides of a piece of wood at the same time and also allows movement of the back plate bone arm 37. I can do it.

(G) Effects of the Invention The present invention provides a lumber machine in which sawing machines 8 are provided on both sides of a running carriage 3 that holds wood and moves back and forth as described above, in which wood is sawed by the running carriage 3 and falls. Since the back plate bone arm 37 that receives the back plate is installed so as to be able to convert between the receiving posture and the discharging posture, the back plate bone arm 37 can handle the back plate that is sawn off in one direction sawing process in the reciprocating sawing process. By holding the saw in the other direction, the back plate can be discharged on the same side as the back plate generated when sawing in the other direction is completed, making it easy to carry out the back plate and sort the product and the back plate.

Moreover, since it has a simple configuration, it is possible to reduce costs.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a cross-sectional view of the main part, Fig. 2 is a cross-sectional view showing the driving part of the back plate pusher λ, and Fig. 3 is a ruler plate control. A plan view of the device, FIG. 4 is a side view of the same as above, FIG. 5 is a cross-sectional view of the saw machine, FIG. 6 is a plan view of the material feeding table, FIG. 7 is a side view of the same as above, and FIG. 8 is a view of the entire device. The plan view and FIG. 9 are side views of the same. 3... Traveling trolley, 8... Saw machine, 12... Circular saw, 35...
Back plate holder, 37... Back plate support arm JP-A-3 121802 (6)

Claims (1)

[Claims] Saw machines 8 are installed on both sides of a traveling cart 3 that holds wood and travels back and forth.
In the sawmill machine, a back plate receiving arm 37 receives the back plate that has been sawn and fallen by the traveling cart 3.
A backboard processing device for a sawmill, characterized in that the backboard processing device is installed so as to convert the backboard into a receiving position and a discharging position.