JP2859588B2 - Automatic transport device for long wood - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic transport device for transporting long lumber such as glued laminated timber in a direction perpendicular to the direction of loading.

[0002]

2. Description of the Related Art As an automatic transport device for long wood, for example, the following device is known (for example, see Japanese Patent Application Laid-Open No. 6-179201). This automatic conveyance device arranges a conveyance belt below the conveyance surface so as to cross the loading position of long wood, and presses the long wood on this conveyance belt in the direction orthogonal to the loading direction. This is a configuration in which a dog for transport is provided. The dog is provided at each of a plurality of locations on the transport belt to increase the transport efficiency, and is capable of sequentially transporting the next long wooden piece while moving or cutting a certain long wooden piece. .

[0003]

However, in the automatic transfer device, the moving speed of the long timber during cutting cannot be set to a predetermined value or more in order to improve the finished state of the cut surface of the long timber. For this reason, there is a problem that the moving speed of the long timber in other parts cannot be higher than the predetermined value, and the transport efficiency is poor. That is, as shown in FIG. 6, since the dogs 51,..., 56 are provided on the same transport belt 57, they move at the same speed. Therefore, even if the long lumber W2 is carried in, if the preceding long lumber W1 is already pressed by the dog 51 at that time and is being cut by the cutter 58, only the transport speed by the dog 52 can be increased. It is not possible.

[0004] Therefore, an object of the present invention is to provide an automatic transport apparatus for long wood that can efficiently transport long wood.

[0005]

In order to achieve the above object, according to the present invention, there is provided a loading means for loading long wood to a predetermined position along a longitudinal direction thereof, and a feeding means for transporting the long wood into the longitudinal direction. In an automatic transport device for long wood provided with a transport unit that transports in a direction orthogonal to the transporting unit, the transport unit,
It comprises an annular drive unit having at least one pressing portion capable of pressing an elongated piece of wood by moving in an annular shape, and at least two or more annular drive units are arranged side by side to be separately driven. is there.

In the direction in which the sheet is conveyed by the conveying means,
It is preferable to apply the present invention to a device provided with a cutting means for cutting long wood near the position where the pressing portion passes.

[0007] It is preferable to provide a control means for transporting the long wood at a constant speed during the cutting by the transport means, and transporting the long wood at a predetermined speed higher than the constant speed except during the cutting.

The control means causes the carry-in means to carry in each of the long timber at a predetermined time interval, and the carry means transports the long timber carried in this time to a position where it does not interfere with the next long timber. It is more preferable to make it.

[0009]

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

FIG. 1 is a plan view showing an automatic long wood transport apparatus according to the present invention. The automatic transfer device generally includes a length measuring sensor 10, a base 11, a fixed base 12a, a plurality of movable bases 12b, and a plurality of loading rollers 13 serving as loading means.
And a pair of annular driving units 14a and 14b serving as conveying means.
And a pair of cutters 15a and 15b as cutting means,
It includes a pantograph mechanism 16, a control device 17, and a first mounting table 18.

The length measuring sensor 10 is provided on the upstream side in the conveying direction of the long wood W (indicated by arrows A and A 'in FIG. 1) and measures the entire length of the long wood W.

The base 11 is provided with a pair of rails 19 at predetermined intervals along the directions of arrows A and A '.

The fixed base 12a is fixed to one end of the base 11, that is, the side where the long wood W is carried in, at right angles to the carrying direction.

The movable table 12b is slidably provided on the rail 19 of the base 11 in parallel with the fixed table 12a.

Each of the carry-in rollers 13 is mounted on the fixed base 12a.
And is fixed to one end side of each movable table 12b. Each carry-in roller 13 is driven to rotate synchronously by a built-in motor 20 (see FIG. 4).
Mobile station located at the most downstream (hereinafter referred to as terminal mobile station) 1
A stopper 21 is provided near the downstream side of the carry-in roller 13a of 2b. This stopper 21 is an air cylinder 22
The long wood W is moved up and down by the driving of the a and 22b to come into contact with the intermediate portion of the downstream end face of the long wood W, and can be moved forward and backward to adjust the carry-in position of the long wood W. Normally, the advance / retreat position is adjusted so that the distance between the stopper 21 and the cutter 15a is the trimming dimension. However, long wood W
Is extremely long, the stopper 21 is lowered so that the long wood W carried in passes without interference. In addition, the said terminal moving stand 12b
A first detection sensor 23 is provided in the vicinity of the upstream of the carry-in motor 13a.

The annular driving sections 14a and 14b are configured as shown in FIGS. That is, guide plates 26 are provided upright from the fixed base 12a and the movable base 12b, respectively. Rollers 24a and 24b are attached to the end of each guide plate 26, and the transport belt 2
5 are wound. One end of each of the annular driving portions 14a, 14b is disposed so as to traverse the carry-in roller 13, and the upper surface thereof is located slightly below a transport surface formed by the carry-in rollers 13, 13,. . Further, dogs 27a and 27b, which are pressing portions, are provided on each of the transport belts 25, respectively. The rollers 24a, 24b of the respective annular driving units 14a, 14b are rotated forward and backward by driving motors 28a, 28b provided directly connected to each other, to move the long wood W from the carry-in roller 13 in the width direction (in FIG. 1). (Indicated by arrows B and B '). The transport speed is changed between the time of cutting and other times as described later. In addition, auxiliary rollers composed of a plurality of small-diameter rollers are provided on both sides of the annular driving portions 14a and 14b so that the long wood W can be smoothly transported to the first and second mounting tables 18 and 38 described below. 14c is provided.

The cutters 15a and 15b are provided on the respective guide plates 26 outside the annular driving portions 14a and 14b located on both sides, and are rotated by a motor 29 in the direction of arrow C in FIG. The long wood W is cut. Due to this rotation direction, the long wood W is cut while being pressed down, and the chips are scattered downward and collected at one place via the discharge duct 30. The cut pieces are discharged by a discharge belt 31 provided at a lower side portion of the base 11. Reference numeral 32 denotes a cutter for cutting the lower surface of the long lumber W by a predetermined size by driving the motor 33 so that the cutters 15a and 15b can smoothly cut the lumber. Reference numeral 32a denotes a second detection sensor for detecting the long lumber W before reaching the yoke cutter 32.

One end of the pantograph mechanism 16 is fixed to the fixed base 12a, and a connecting shaft 34 on one side is connected to each of the movable bases 12b at a predetermined pitch. A rack 35 is provided on one side of the base 11, and a pinion 36 rotatably provided on the terminal end moving table 12b is engaged with the rack 35. And this pinion 3
When the motor 6 is rotated by the drive of the motor 37, the movable tables 12b extend in the directions of arrows A and A 'at regular intervals via the pantograph mechanism 16.

As shown in FIG. 4, the control device 17
Detection signals are respectively input from the length measurement sensor 10, the first detection sensor 23, and the second detection sensor 32a, and each motor 2
0, 28a, 28b, 29, 33, 37 and control signals to the air cylinders 22a, 22b.

The first mounting table 18 is for temporarily pooling the long lumber W for transport to the next step.

Reference numeral 38 denotes a second mounting table for temporarily pooling the long wood W in order to return to the previous process.

Hereinafter, a control method by the control device 17 will be described with reference to a flowchart of FIG.

First, it is determined whether or not a long piece of wood W can be carried in (step S1). This determination is made based on whether or not the long wood W is detected at the loading position by the first detection sensor 23. If the carry-in is possible, the carry-in roller 13 is driven to rotate (step S2). At this time, the loading roller 13
Is set to be higher than the rotation speed of a transport roller (not shown) disposed on the upstream side, or this transport roller is stopped. Thereby, the long lumber W can be carried in at predetermined time intervals. Further, the detection signal from the length measuring sensor 10 is taken in, and the total length of the long wood W is measured (step S3). Then, a control signal is sent to the motor 37 based on the measurement result, and the rack 3
5, The respective moving tables 12b are extended and contracted at equal intervals via the pinion 36 and the pantograph mechanism 16 (step S4).
The interval between the movable tables 12b may be expanded or contracted at any time according to the size of the long wood W to be carried in which is being measured. Thus, when the position of each moving table 12b is determined and the long wood W is detected by the first detection sensor 23 (Step S5), each carry-in roller 13 is decelerated and stopped (Step S6).

Next, the motors 29 and 33 are driven to rotate the cutters 15a and 15b and the cutter cutter 32 (step S7). Then, one of the annular driving portions 14a
It is determined whether or not the dog 27a is being used (step S8). If the dog 27a is not in use, the dog 27a is moved at a high speed in the direction of arrow B via the conveyor belt 25 by driving the motor 28a of the annular drive unit 14a (step S9). On the other hand, if the dog 27a is being used (if it is already cutting another long piece of wood W or moving to another position), the motor 2 of the other annular drive unit 14b
By driving 8b, the dog 27b is similarly moved at high speed in the direction of arrow B (step S10). At this time, the dog 27a or 27b is moved at a speed at which the long wood W to be carried next at least can be conveyed to a position where it does not interfere with the long wood W currently being conveyed. This makes it possible to eliminate wasteful time and perform the operation in the shortest time even when the long timber W is continuously transported.

Here, it is determined whether or not the long timber W has reached the cutting position (step S11). This determination is made by a second detection that detects the long wood W before reaching the cutter 32.
This is performed by the detection sensor 32a. When a detection signal is input from the second detection sensor 32a, the moving speed of the dog 27a or 27b is suppressed, so that after the start of cutting, a speed (constant) at which a good finished state can be obtained on the cut surface. (Step S12). Also, after the end of cutting,
By rotating the motor 28a or 28b at high speed,
The dog 27a or 27b is moved to an initial position (a position where the transport of the long wood W carried in can be started immediately).

Hereinafter, the operation of carrying in, transporting and cutting the long timber W is performed in the same manner.
Even if the moving speed of the dog 27a is kept low, such as during cutting, the next long wood W can be transported by the other annular drive unit 14b, so that extra transport time is required. And good transport efficiency.

In the above embodiment, the long lumber W is transported by the pair of annular driving portions 14a and 14b. However, if there is enough space and the number can be increased, Further, it is possible to improve the transport efficiency.

In the above embodiment, each roller 24
Although the motors 28a and 28b for driving the motors a and 24b are directly connected to the rotating shafts of the rollers 24a and 24b, the motors 28a and 28b are arranged at lower positions via a belt as shown by a two-dot chain line in the drawing. It may be. According to this, when each of the annular driving portions 14a and 14b is approached by the pantograph mechanism 16, the motors 28a and 28b can be arranged at positions where they do not interfere with each other, so that the size of the long wood W is not so long. It is also possible to deal with.

Further, in the above-described embodiment, the rollers 24a, 24b and the conveyor belt 25 are used as the annular driving portions 14a, 14b, but may be constituted by sprockets, chains, etc. instead. , Dog 27a,
Any configuration can be used as long as it can move the ring 27b in a ring shape.

[0030]

As is apparent from the above description, according to the automatic transporting apparatus for long wood according to the present invention, the annular driving section is arranged side by side, and the long wood can be transported separately and independently. The transport speed can be set to the most appropriate value according to the situation, and the transport efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of an automatic transport device for long wood according to an embodiment.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view showing the transfer device of FIG. 2;

FIG. 4 is a block diagram of the control device of FIG. 1;

FIG. 5 is a flowchart illustrating cutting control in the automatic transfer device illustrated in FIG. 1;

FIG. 6 is a schematic diagram showing a state in which a long piece of wood is conveyed by an automatic conveyance device according to a conventional example.

[Explanation of symbols]

 14a, 14b Annular drive unit 15a, 15b Cutter (cutting means) 24 Conveying belt 24a, 24b Roller 27a, 27b Dog (pressing unit) 32 Snoring cutter (cutting means)

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B27B 31/00 B27B 29/00

Claims (4)

(57) [Claims] 1. A long timber comprising a carry-in means for carrying long wood to a predetermined position along a longitudinal direction thereof, and a transport means for carrying the carried long wood in a direction orthogonal to the longitudinal direction. In the automatic conveying apparatus, the conveying means is constituted by an annular driving section having at least one pressing section capable of moving in an annular manner and pressing long wood, and at least two or more annular driving sections are arranged in parallel. An automatic transport device for long timber, wherein each device is driven separately. 2. A long wood piece according to claim 1, further comprising a cutting means for cutting the long wood piece near a position where the pressing portion passes in a direction in which the long wood piece is conveyed by the conveyance means. Automatic transfer device. 3. A control means for conveying long wood at a constant speed during cutting, and conveying at a predetermined speed higher than the constant speed except during cutting, by the conveying means. The automatic transport device for long wood according to claim 1 or 2. 4. The control means causes each of the long woods to be carried in at a predetermined time interval by the carrying means, and
4. The automatic transport apparatus according to claim 3, wherein the long wood carried in this time is transported at a high speed to a position where it does not interfere with the next long wood.