JPH01180301A - Apparatus for automatically cutting timber - Google Patents

Abstract

PURPOSE:To secure a stable dimensional accuracy and reduce working time by positioning a timber during transportation to an arbitrary position by means of a stopper capable of setting and cutting it by an electric saw such that a timber holding mechanism is lowered so as to hold the cutting portion of the timber. CONSTITUTION:The data of desired dimension of the timber for constructing the wooden frame of a wooden box packing is preliminarily stored in a central control unit and the timber 1 to be cut is transported on the upper surface of a conveyor 2 from a timber supplying part up to a cutting work position. The determining dimension stopper 3 is moved by a servo motor via a spline shaft 13 and stopped at the position to keep the desired dimension from the position of a circular saw blade 6a for positioning the timber 1. At the same time, the timber is pressed down by a holding arm 4a such that the timber holding mechanism 4 is lowered by an operational cylinder 5 and so the timber 1 is cut by the circular saw 6a which is being rotated and risen by the operational cylinder 7. After that, the stopper lever 3a, circular saw blade 6a and timber holding mechanism 4 revert to each stating position and the cut timbers are transported again on the upper surface of the conveyor 2 and flowed, for instance, to the wooden frame construction part.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic wood cutting device, and in particular, to an automatic wood cutting device suitable for automating the operation of cutting wood used for packaging articles in wooden boxes into required dimensions. This invention relates to an automatic wood cutting device.

[Prior Art] At production sites that make to order products, products are often handled in accordance with customer requirements, and there is a trend toward high-mix, low-volume production. As factory automation (FA) progresses in production, wooden box packaging must also be adapted to the production side.

On the other hand, packaging specifications in the logistics field need to be improved, such as using cardboard and developing new materials, but wooden box packaging has characteristics that make it difficult to discard due to its strength and cost. However, the reality is that packaging in wooden boxes has traditionally relied on manual labor.

[Problem to be solved by the invention] Regarding the technology for cutting wood used for wooden box packaging into required dimensions, conventionally, positioning the wood at the cutting work position was done manually, and the work was done by holding it down by hand during cutting. There are problems such as uncertainty in ensuring dimensional accuracy and time required for one positioning.

The present invention has been made to solve the problems of the prior art described above, and provides an automatic wood cutting device that can ensure stable dimensional accuracy and shorten working time when cutting wood to a required length. Its purpose is to provide.

[Means for Solving the Problems] In order to achieve the above object, the automatic wood cutting device according to the present invention has a structure including a transport means for transporting the wood to be cut to a required size to a cutting work position, and a transport means for transporting the wood to be cut to a required size. a positioning means that is movable in the transport direction of the wood so as to stop the wood at a position that maintains a required dimension in the transport direction with respect to the cutting work position; a presser mechanism that presses the positioned wood at that position; and the above-mentioned cutting work. The present invention includes an electric cutting device that cuts a piece of wood that has been positioned at one position, and a control device that has a control circuit configured to hold the wood and cut the wood at the same time as the positioning is completed.

Additionally, the first positioning means includes a stopper block equipped with a rotatable stopper lever, a drive means for moving this stopper block in the transport direction of the wood, and a drive means for guiding the moving direction of the stopper block and rotating the stopper lever. The stopper lever includes a spline shaft that limits the range of movement, and a drive means that rotates the stopper lever.

[Function] The automatic wood cutting device configured as described above is a device that positions the wood being transported on the conveyor of the transport means using a stopper that can be set at any position, and cuts the wood into a required size.

At the same time that the wood hits the stopper and is positioned, a presser mechanism descends from above the wood to be cut, presses the area around the wood, and the electric circular saw rotates toward the cutting area to cut the wood.

The positioning by the stopper and the operation of the presser mechanism make it possible to prevent positional displacement during cutting, and it is possible to perform cutting work in a short time using an electric circular saw.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a schematic configuration diagram of an automatic wood cutting device according to an embodiment of the present invention, FIG. 2 is a side view taken along arrow A-A in FIG. 1, and FIG. 3 is a B-B diagram in FIG. A side view in the direction of arrows and FIG. 4 are schematic configuration diagrams of the positioning device section, (a) is a plan view, and (b) is a side view showing a part of the stopper.

In Figures 1 to 3, 1 is a piece of wood to be cut into required dimensions, 2 is a conveyor that is a conveyor for transporting the wood 1 to a cutting position, and 3 is a conveyor for transporting the wood 1 to a cutting position. 4 is a wood holding mechanism that holds the positioned wood at that position; 4a is a wood holding mechanism; 5 is a wood presser actuating cylinder, 6 is an electric circular saw device related to an electric cutting device, and 7 is a circular saw blade 6a.
8 is a rotary length measuring device for measuring the moving distance of the wood 1 during transport; 9 is a conveyor for smooth transport of the wood 1; The roller 10 is an imaging camera for detecting defects in the wood 1.

Also in FIG. 4, which shows the 1 positioning device section.

3a is a stopper lever that is a part of the sizing stopper 3 that comes into contact with the wood 1, and 3b is a stopper block for rotatably holding the stopper lever 3a.

Reference numeral 11 denotes a servo motor for driving means for moving the stopper block 3b of the sizing stopper 3 to the left and right in the longitudinal direction of the conveyance of the wood 1; and 12, a servo motor.

A timing belt 13 for moving the stopper block 3b is a spline shaft that guides the movement direction of the stopper block 3b and limits the rotation range of the stopper lever 3a. In order to stably guide the block 3b, two of them are arranged in parallel. In addition, the spline shaft 13
Although not shown in detail, the stopper lever 3a is fitted into the spline shaft 13 so that the stopper lever 3a can rotate between the solid line and the broken line depending on the uneven width of the spline groove. Reference numeral 14 denotes a rotation cylinder related to a driving means for rotating the stopper lever 3a and the spline shaft 13.

In addition to the above, the automatic wood cutting device of this embodiment has a mechanism for interlocking the operation of the positioning device section, the operation of the wood holding mechanism that presses the wood at the same time as positioning is completed, and the operation of the electric circular saw device that performs cutting work in a timely manner. control device (not shown).

The operation of the automatic wood cutting device having such a configuration will be explained below.

For example, as a preliminary step for packaging in wooden boxes, there is a step of cutting wood into required dimensions, and this device automates that step.

Wood 1 to be cut into required dimensions is conveyed on a conveyor 2 from a wood supply section (not shown) to a cutting work position. An electric circular saw device 6 is installed at the cutting work position.

The data on the required dimensions of the wood for assembling the wooden frame for wooden box packaging is stored in advance in the central control device (computer, etc. according to the scale of the equipment), and the required dimensions are determined by the servo motor for each loft of the lumber 1 to be transported. The command is sent to the control section 11. By the operation of the servo motor 11, the sizing stopper 3 moves via the timing belt 12 and the spline shaft 13, and stops at the cutting work position, more precisely, at a position where the required size is maintained from the position of the circular saw blade 6a. The stopped sizing stopper 3 is moved by the stopper lever 3 by the operation of the rotary cylinder 14.
a rotates to the position shown by the solid line in FIG. 4(b). The wood 1 conveyed on the conveyor 2 comes into contact with the stopper lever 3a.

At the same time as the wood 1 is positioned by the sizing stopper 3, the wood holding mechanism 4 located above the cutting work position is lowered by the wood holding actuating cylinder 5.

The wood 1 is held down by the wood holding arm 4a.

Subsequently, the circular saw blade 6a of the electric circular saw device 6 is rotated and raised by the saw blade operating cylinder 7 to cut the wood 1.

When the cutting is completed, the stopper lever 3a is rotated as shown by the arrow to the position shown by the broken line in FIG. 4(b) by the operation of the rotary cylinder 14, thereby releasing the stopper function.

The circular saw blade 6a is retracted to the position shown in FIG. 2 by the saw blade actuating cylinder 7, the wood holding mechanism 4 is also raised by the wood holding actuating cylinder 5, and the wood cut to the required length is moved again onto the conveyor 2. It is conveyed and flows to, for example, the wooden frame assembly department.

Thereafter, the cutting operation is performed by sequentially repeating this process.

The series of operations described above, namely, movement and positioning of the sizing stopper 3, operation of the wood holding mechanism 4, and electric circular saw device 6.
It goes without saying that each motion of the operation depends on the actions of each control circuit rather than on commands from the central controller.

According to this embodiment, the sizing stopper 6 stops the wood being transported at a position that maintains the required dimension in the transport direction with respect to the cutting work position according to the cutting length of the wood, and at the same time as this positioning, the Since the presser mechanism 4 and the electric circular saw device 6 operate, it is possible to prevent positional deviation during cutting, and the cutting work can be automatically performed in a short time.

In the above embodiment, the stopper block is moved by a servo motor in the positioning device section via a timing belt and a spline shaft. However, the present invention is not limited to this, and similar functions can be used. This does not preclude the adoption of other structures as long as the effect is expected.Similarly, although an example has been described in which the rotation of the stopper lever is performed via a spline shaft by a rotary cylinder, the present invention is not limited to other structures. This does not preclude the adoption of this structure.

Furthermore, the wood holding mechanism and the electric wood cutting device are not limited to the structures and shapes shown in the above embodiments, but devices with other structures and shapes may be adopted as long as similar functions and effects are expected. Needless to say, it's okay.

Further, although the automatic wood cutting device shown in the above embodiment has been described as a preliminary stage work equipment for wooden box packaging, which is located between the wood supply section and the wooden frame assembly section, this device can be used as an independent work piece. Of course, it can also be used as equipment.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide an automatic wood cutting device that can ensure stable dimensional accuracy and shorten the working time when cutting wood to a required length. can.

[Brief explanation of the drawing]

1 is a schematic configuration diagram of an automatic wood cutting device according to an embodiment of the present invention, FIG. 2 is a side view taken along arrow A-A in FIG. 1, and FIG. 3 is a B in FIG. 1. The side view in the direction of arrows and FIG. 4 are schematic configuration diagrams of the positioning device section, (a) is a plan view, and (b) is a side view showing a part of the stopper. 1...Wood, 2...Conveyor, 3...Size stopper. 3a...stopper lever, 3b...stopper block, 4...wood holding mechanism, 4a...wood holding arm. 5... Wood presser operating cylinder, 6... Electric nine saw device, 6a... Circular saw blade, 7... Saw blade operating cylinder, 11... Servo motor, 12...
Timing belt, 13... Spline shaft, 14...
・Rotating cylinder.

Claims (1)

[Claims] 1. A conveyance means for conveying wood to be cut to a required size to a cutting work position, and a means for conveying wood to a cutting work position, and a means for stopping the wood being conveyed at a position where the required size is maintained in the conveyance direction with respect to the cutting work position. To,
a positioning means that is movable in the transport direction of the wood; a presser mechanism that holds the positioned wood in that position; an electric cutting device that is in the cutting position and cuts the positioned wood; An automatic wood cutting device comprising: a control device configured with a control circuit so as to press and cut wood. 2. In the item described in claim 1, the positioning means includes a stopper block equipped with a rotatable stopper lever, a drive means for moving the stopper block in the transport direction of the wood, and a stopper block equipped with a rotatable stopper lever; An automatic wood cutting device comprising: a spline shaft that guides the direction of movement and limits the range of rotation of a stopper lever; and a drive means that rotates the stopper lever.