JP3167953B2 - Precut wood production equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically producing pre-cut wood for a wooden building, and in particular, can freely and efficiently perform various processings on wood of various sizes and shapes. The present invention relates to a precut wood production apparatus and a production line including the same.

[0002]

2. Description of the Related Art Wooden buildings use various shapes of wood such as bases, columns, beams, and the like, and have a connection for joining each wood from the viewpoint of strength and durability. Processing. Since there are various shapes in the connection, it is a fact that the processing is very troublesome.

[0003] In recent years, so-called precut wood has been used in order to shorten the construction days by omitting the joint processing of wood at the construction site. Usually, in the production of precut wood, a dedicated processing device is used for each shape of the connection, so that various types of processing devices are required, and there has been a problem that the processing cost is increased. In particular, in the case of a wooden building that differs from one building to another, such as a custom-built building, it is impractical to use various types of processing equipment to produce a small number of precut wood required for the building.
Further, in the case of pre-cut timber for one wooden building, it has to be combined and packed so that it can be easily used at a construction site, which is manufactured by separate processing equipment, and the labor is troublesome.

However, due to the recent shortage of manpower, reduction of construction costs and shortening of construction period, even when manufacturing pre-cut wood used for different wooden buildings for each building as in custom-built buildings, the process is automated and pre-cut wood is used. There has been a growing demand for more efficient production of smelting. In view of such circumstances, the present inventor has previously proposed an apparatus for manufacturing precut wood using an arm type robot that supports a plurality of processing tools and a wood gripping member in an exchangeable manner (Japanese Patent Laid-Open No. 6-285808).
issue).

As schematically shown in FIG. 19, this apparatus for manufacturing precut wood includes an arm type robot 1, a pair of processing tables (a first processing table 2a and a second processing table 2b), It has a supply table 4 for processed wood, a storage table 5 for pre-cut wood, and a control device 6 for the robot 1, and is characterized in that wood of various sizes and connection shapes can be automatically processed.
The present inventor has conducted intensive studies on an apparatus capable of producing precut wood more efficiently based on this apparatus, and has found that it is desirable to accurately and efficiently fix and position the wood to be processed.

[0006] As a method of positioning wood in a wood processing apparatus, conventionally, a gripping device has been used as disclosed in, for example, Japanese Patent Application Laid-Open No. 5-154807. In this conventional apparatus, positioning is performed by gripping one end of processed wood on a processing table with a gripping device and moving the wood to a predetermined position by a servomotor attached to the gripping device.

However, in such a conventional positioning method, there is a problem that the moving distance of the gripping device is long and the time required for positioning the wood is long because the wood is moved while performing the positioning. Therefore, in this positioning apparatus, even if the robot disclosed in Japanese Patent Application Laid-Open No. 6-285808 is used, the waiting time of the robot becomes longer, and the effect of improving the working efficiency by using the robot is not sufficient. Furthermore, since the gripping device must always return to the reference position, there is a problem that it is difficult to shorten the positioning stroke.

Accordingly, an object of the present invention is to provide an apparatus for manufacturing precut wood which can accurately and efficiently position wood to be processed having various sizes and shapes.

[0009]

As a result of intensive studies to solve the above problems, the present inventor has found that a plurality of wood positioning stoppers are provided on a pair of conveyor pedestals extending left and right across a wood working area. The present inventors have found that the positioning of wood can be performed accurately and efficiently by providing a movable processing means between the two conveyor pedestals, and the present invention has been completed.

[0010]

An apparatus for manufacturing precut wood according to a first embodiment of the present invention comprises a pair of conveyor tables extending left and right across a processing area for wood, and extending from the inner end of each conveyor table to the processing area. A pair of left and right movable processing tables that are present and can move up and down, wood fixing means located near the inner end of each conveyor table, and at least one processing tool for processing the wood fixed by the wood fixing means. A robot having a freely supporting arm, and a control device for issuing a command to the robot and the movable processing table based on processing data of each piece of wood, wherein the conveyor table has a plurality of protruding free wood positioning tools. A stopper is provided, and the lumber is stopped by projecting a predetermined stopper based on the processing data, and is fixed by the lumber fixing means. And, it retracts the movable work table out of working range of the working tool, after moving said robot arm by supplementary distance, and performs processing of wood.

A precut wood manufacturing apparatus according to a second embodiment of the present invention comprises a pair of conveyor tables extending left and right across a wood processing work area, and a movable processing apparatus capable of moving horizontally between the two conveyor tables. A table, a movable processing apparatus integrally provided with a wood fixing means and a processing means, and a control device for issuing a command to the movable processing apparatus based on processing data of each piece of wood, wherein the conveyor table has a plurality of A protrudable lumber positioning stopper is disposed, and the lumber is stopped by projecting a predetermined stopper based on the processing data, and the movable processing device is moved by a supplementary distance, and the lumber of the lumber is moved. It is characterized by processing.

[0013] The production line for precut wood of the present invention comprises:
The apparatus has two or more precut wood production apparatuses, the upstream production apparatus has a conveyor communicating with the downstream production apparatus, and a conveyor that bypasses the downstream production apparatus, and the bypass conveyor has the downstream conveyor. It is characterized in that it merges with the discharge conveyor of the side production equipment and enters the precut wood discharge conveyor.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. [1] First Embodiment The precut wood manufacturing apparatus of the first embodiment shown in FIG.
Arm type robot 1, a pair of left and right conveyor tables 2a, 2b arranged on a straight line, and respective conveyor tables 2a, 2b
Of movable worktables 3a, 3b located near the inner end of
And a conveyor 4 for feeding processed wood connected to the conveyor base 2a, a discharge conveyor 5 for precut wood connected to the conveyor base 2b, and a control device 6. In FIG. 1, the connection between the control device 6 and other components is omitted.

FIG. 2 is a partial perspective view showing an example of a connection processed by the apparatus of the present invention. In FIG. 2, a protrusion 53 and a step 55 are formed on the wood 51, and a recess 54 having a shape complementary to the protrusion 53 and a step 56 corresponding to the step 55 are formed on the wood 52 fitted with the wood 51. Therefore, by fitting the projection 53 into the recess 54, the wood 51 and the wood 52 can be firmly joined. The wood to be processed by the apparatus of the present invention is not limited to the structural material as shown in FIG.

[A] Structure of Manufacturing Apparatus Each component of the pre-cut wood manufacturing apparatus of the first embodiment will be described in detail below.

(1) Conveyor table As shown in FIG. 3, the apparatus according to the first embodiment of the present invention has a pair of conveyor tables 2a and 2b arranged in a straight line. A plurality of wood transport rollers 21 provided on each of the conveyor tables 2a and 2b are adapted to rotate only when wood is present, and carry in and carry out the processed wood W and the precut wood. The direction of rotation of the roller 21 can be reversed by an instruction from the control device 6, so that each wood W
Can be moved forward or backward.

(2) Wood positioning stopper At least a plurality of wood positioning stoppers 22 are provided at regular intervals on the conveyor table 2b on the downstream side. As shown in FIG. 4A, the stopper 22 comprises a cylinder 24 having a vertically movable rod 24a and a cylinder rod 24a.
And a plate-like stopper member 25 fixed to the upper end of the plate. Further, as the projecting member of the stopper 22, an L-shaped plate member 25 as shown in FIG. 5 may be used instead of the plate member 25 shown in FIG.

As shown in FIG. 4 (a), the plate-like member 25 of the stopper 22 for wood positioning is usually a roller of the conveyor base 2b.
Although it is located below the surface (envelope surface) 21a connecting the upper ends of 21,
The rod 24a of the air cylinder 24 is instructed by the control device 6.
As shown in FIG. 4 (b), the plate-like member 25 protrudes above the envelope surface 21a, and stops the forward or backward movement of the wood W. In a still further preferred embodiment, a plurality of stoppers 22 are provided.
Are provided at regular intervals on the upstream conveyor base 2a as well as on the downstream conveyor base 2b.

The interval between the stoppers 22 can be set according to the size and type of the processed wood W. In the case of precut wood for ordinary wooden construction, it can be set to about 20 to 50 cm. Which stopper 22 is to be protruded in accordance with an instruction from the control device 6 is determined according to the length and the processing position of the processed wood W. It is preferable that the processing position of the processed wood W be set so that the moving distance of the robot arm 11 is minimized. For example, when the interval between the stoppers 22 is 20 cm and the distance between the processing tool of the robot 1 and the end of the conveyor base 2 b is 70 cm, to process the wood W at a position 1.25 m from the tip, the conveyor base 2 b The stopper 22 at a position 60 cm from the end of the robot 1 may be raised, and the position of the machining tool of the robot 1 may be shifted 5 cm downstream. Since the maximum distance of the arm 11 that moves to process the wood W stopped by the stopper 22 is less than half the interval (20 to 50 cm) between the stoppers 22, the positioning operation becomes very efficient.

(3) Wood fixing means Wood is fixed by wood fixing means 23a and 23b located near the inner ends of the conveyor tables 2a and 2b. In a preferred embodiment of the present invention, each wood fixing means has a three-way vise means as shown in FIG. Specifically, wood fixing means
23a includes a flat fixing base 30, a pair of horizontal vice members 26, 26 for holding the wood W from the left and right on the fixing base 30, and one vertical vice member 27 for holding the wood W from above. Each horizontal vise member
26 is an air cylinder 26a, a rod 26b of the air cylinder 26a, and a contact member 26 fixed to the tip of the rod 26b.
c.

The air cylinder 26 of the two lateral vice members 26, 26
When the rods 26b and 26b project simultaneously and the rods 26b and 26b protrude, the contact members 26c and 26c contact the side surfaces of the wood W. Here, when the two contact members 26c, 26c lightly contact the side surface of the wood W, they retreat and move forward until they come into contact. The two lateral vise members 26, 26 repeat this forward and backward movement several times (two or three times) to accurately position the wood W in the horizontal direction. Further, the vertical vise member 27 is lowered at the same time, and after the horizontal positioning is performed by the two horizontal vice members 26, 26, the vertical position is performed by pressing the upper surface of the wood W (see FIG. 7). As described above, since the wood W is simultaneously contacted from the three directions of the horizontal direction and the vertical direction, the positioning of the wood W is accurate.

In a preferred embodiment of the present invention, as shown in FIG. 8, each wood fixing means 23 further includes a roller device 28 for pressing the upper surface of the wood W being conveyed. Roller device 28
A vertical air cylinder 28a fixed to a plate protruding from the frame of the wood fixing means 23a;
Roller rotatably supported at the tip of rod 28b of 28a
29. The roller 29 rotates as the wood W comes into contact with it, but may have a reverse rotation preventing mechanism so that it rotates only in the forward direction if necessary.
The rod 28b of the vertical air cylinder 28a is normally at the retracted position, but when the conveyed wood W is sensed by a sensor (not shown), it descends and comes into contact with the upper surface of the wood W so as to press it. This effectively prevents the wood W being transported from shifting laterally. In addition, by providing a reverse rotation prevention mechanism, the wood W slips,
Can be prevented from moving in the opposite direction.

(4) Movable Working Table The apparatus according to the first embodiment of the present invention comprises a pair of conveyor tables 2
A pair of left and right movable worktables 3a, 3b extending from the inner ends of a, 2b to the work area and vertically movable. In the example shown in FIG. 3, the movable processing tables 3a and 3b are respectively operated by the conveyor cylinders 2 by the action of air cylinders 33a and 33b.
It is possible to pivot up and down around the inner ends of a and 2b, but it is not limited to this, and it may be structured to move horizontally, for example.

Each of the movable worktables 3a and 3b is provided with at least one timber transport roller 31, and at least one at least one timber positioning stopper 32.
The timber transporting roller 31 may be a driven roller, or may be configured to be able to simultaneously rotate forward or reverse in accordance with the instruction of the controller 6 in accordance with the conveyor table. Thereby, the wood W
Can be moved forward or backward. In addition, in order to facilitate the removal of the wood chips, it is preferable to rotate the movable processing tables 3a and 3b downward when the movable processing tables 3a and 3b are turned downward (see FIG. 9).

At least one protrudable stopper 32 is provided on at least the movable worktable 3a on the upstream side. The structure of the stopper 32 itself is the conveyor table 2a, 2
It may be the same as the stopper 22 of b. As shown in FIG. 3, it is preferable to provide a stopper 32 that can protrude particularly at the tip of the movable worktable 3 a on the upstream side. Stopper provided at the tip
With the stop by 32, the tip of each piece of wood W is located almost in the center of the working area, and a robot arm that supports the working tool
11 moves the minimum distance.

Another stopper 32 may be provided on the movable worktable 3a for use when the processing position of the wood W is different or when processing the rear end of the wood W. Further, at least one protrudable stopper 32 may be provided not only on the upstream movable processing table 3a but also on the downstream movable processing table 3b. This is particularly useful when the rear end of the wood W needs to be processed.

(5) Chip Ejection Means A discharge conveyor 7 is provided below the pair of movable processing tables 3a and 3b.
Extend in the orthogonal direction. As shown in FIG. 9, the discharge conveyor 7 serves to discharge a piece of wood W ′,
When a relatively large piece of wood W 'is formed, the discharge conveyor 7 is turned off from the movable worktables 3a and 3b that have turned downward.
May not fall quickly. For such a case, it is preferable that at least one of the movable processing tables 3a and 3b is provided with the scrap discharge means 34.

FIG. 10 shows an example of the scrap discharge means 34 provided on the movable worktable 3a. In FIG. 10, the transport roller 31 and the stopper 32 are omitted for easy viewing. The scrap discharge means 34 is an air cylinder having a support member 34a fixed to one side end of the movable processing table 3a and protruding upward, and a rod 34c penetrating an opening provided at a central portion of the support member 34a. 34d and a pair of guide rods 34e, 34e fixed to the tip of a rod 34c and on both sides thereof.
And a pressing plate 34f having A pair of guide rods 34
e and 34e pass through the opening of the support member 34a.

The push plate 34f of the scrap discharge means 34 is normally at the retracted position (one side end of the movable worktable 3a), but when the rod 34c of the air cylinder 34d projects, the push plate 34f is pushed.
Moves across the movable processing table 3a (see FIG. 11). The moving direction of the push plate 34f is kept constant by a pair of guide rods 34e, 34e penetrating the opening of the support member 34a. When the rod 34c retreats, the push plate 34f returns to the original side end. By this piece discharge means 34, even if a large piece W 'is caught on the movable worktable 3a, it can be easily removed and dropped on the lower discharge conveyor 7.

(6) Arm type robot The robot 1 is arranged close to the working area, and can move three-dimensionally freely in the working area.
Having. The structure itself of the arm type robot 1 is disclosed in
It may be the same as that described in No. 5808. An arm type robot 1 having a structure as shown in FIG. 12 may be used. This robot 1
Has an arm 11, a motor device 12 attached to the tip of the arm 11, and a processing tool 14 detachably attached to an adapter device 13 attached to the motor device 12. Machining tool attached to the tip of arm 11 of robot 1
14 can be anything, such as a cutter, router, drill, etc. A wood holding member (not shown) is further provided on the arm 11.
May be attached.

The arm 11 of the robot 1 is freely rotatable, and can be freely extended and contracted by changing its angle, so that it can freely move three-dimensionally. The movable range of the arm 11 is indicated by a broken line 15 in FIG. As shown in FIG. 1, a working tool table 16 on which a plurality of working tools 14 which are removably attached to the robot 1 is arranged within a movable range 15 of the arm 11 of the robot 1. The number of processing tools 14 can be set arbitrarily.

(7) Conveyor for inputting wood to be processed The conveyor 4 for inputting wood to be processed is connected to the conveyor stand 2a, and supplies the wood W to be processed to the processing work area. The operator sets necessary wood to be processed W on the input conveyor 4 in order while checking the processing order on a printed list or display. Note that the input of the processed wood W may be automatically performed by the control device 6. The processed wood W is transported to the conveyor table 2a according to an instruction from the control device 6. A preliminary processing device such as a nose-cutting saw may be provided on the wood feeding conveyor 4.

(8) Pre-cut Wood Discharge Conveyor The pre-cut wood discharge conveyor 5 carries out the cut-processed wood (pre-cut wood) from the conveyor table 2b under the instruction of the control device 6. The operator deposits and packs the precut wood in a preset combination and order.

(9) Control Apparatus The control apparatus 6 used in the apparatus of the present invention may be any control apparatus such as a computer, a line control panel, and a robot control panel. Based on the processing information (processing order, size, shape of connection, processing procedure, etc.) for each piece of wood, the control device 6 controls not only the arm robot 1 but also the conveyor tables 2a, 2b.
b, movable worktables 3a, 3b, wood fixing means 23a, 23
b. Control the movement of the stoppers 22, 32, etc. Control device 6
The processing information for use is not limited to manually input information, but may be information obtained by converting design information produced by CAD software.

In addition to the above components, the apparatus for producing precut wood according to the first embodiment may further include an ink jet printer, a label sticking machine, and the like. In order to improve the processing efficiency, a plurality of robots 1 may be provided, or one or two or more dedicated machines may be provided on the line.

[B] Operation of Apparatus The operation of the apparatus for producing precut wood according to the first embodiment will be described below. First, processing information data (processing order, size, shape of connection, processing procedure, stacking order on a discharge conveyor, etc.) of each processed wood W is input to the control device 6. Next, the worker puts the processed wood W into the wood feeding conveyor 4 and transports it to the conveyor table 2a based on a command from the control device 6. When the wood W reaches the working area, the stopper 22,
Any one of the projections 32 is projected to position the processed wood W in the traveling direction. Next, the wood fixing means 23a and 23b are operated to firmly hold and fix the processed wood W from three sides.

For example, when processing a tip such as a feather material, the stopper 32 at the tip of the movable worktable 3a is protruded. Further, when processing the end of the processed wood W, the processed wood W may be advanced, brought into contact with an appropriate stopper 22 on the conveyor table 2b, stopped, and fixed by the wood fixing means 23b. Further, the wood W to be processed is stopped by being brought into contact with a stopper 22 provided at the tip of the movable processing table 3b.
Even if fixed, accurate positioning can be performed similarly. Further, when processing the intermediate position of the processing target wood W, the conveyor table 2 is set so that the processing portion is within the processing operation area of the robot 1.
The work piece W is stopped by projecting the optimum stopper 22 of b, and the work piece W is firmly fixed by the fixing device 23a and / or 23b.

The processing position of the wood W is calculated based on the data of the processed wood W and the position of the stopper used, and the arm 11 of the robot 1 is moved to the processing position. Processing tool
When changing 14, a predetermined tool 14 is automatically exchanged on the tool table 16. Processing of processed wood W
This is automatically performed based on the processing procedure data input to the control device 6. When processing the wood W, the movable worktables 3a and 3b are lowered as shown in FIG. 9 so that the movement of the tool of the robot 1 is not hindered.

When the processing of the processed wood W is completed, the obtained precut wood is conveyed to the discharge conveyor 5 via the conveyor stand 2b. The scrap W 'is dropped onto the lower conveyor 7 using the scrap discharging means 34 as necessary. In this way, all of the planned wood joints are automatically processed, and each piece is conveyed to the discharge conveyor 5.

[1] Second Embodiment [A] Structure of Manufacturing Apparatus The precut wood manufacturing apparatus of the second embodiment is a kind of dedicated machine for processing wood W to a predetermined length. The device having this will be specifically described. As shown in FIG. 13, this apparatus comprises a pair of left and right conveyor tables 102a, 102b arranged on a straight line, and each of the conveyor tables 102a, 102b.
2b, and, if necessary, each of the conveyor tables 102a, 102b and the movable processing device 104.
And a plurality of elevating rollers 106 and 108 which fill the gap between them. Each of the conveyor tables 102a, 102b has a plurality of rollers 121 arranged at regular intervals. Other parts may be basically the same as in the first embodiment.

The movable processing device 104 includes both conveyor tables 10.
In the working area between 2a and 102b, the wood W moves forward and backward integrally in the traveling direction of the wood W. For the sake of clarity, in FIGS. 13 and 14, the entire movable processing device 104 which moves integrally back and forth is surrounded by a broken line. The movable processing device 104 includes a movable processing table 103 that moves between the two conveyor tables 102a and 102b;
A pair of vertical plates (each acting as a pressing plate in this embodiment) 110a, 110b and a pair of side clamp plates 112
a, 112b, a driving roller 114 for pressing wood, a driven roller 116 for pressing wood, and a circular saw 118.

The processing table 103 has a plurality of rollers 120 and a slit 122 at the position of the circular saw 118, which is orthogonal to the traveling direction of the wood W. The processing table 103 is fixed to a frame of the movable processing device 104 so as to move integrally with the movable processing device 104. Each roller 120 may be driven or driven.

The push plates 110a and 110b are shown in FIGS.
As shown in FIG. 3, the roller tables 102a and 102b and the movable processing table 103 are arranged at positions on the rollers adjacent to one side end of the movable processing table 103. 132b. When the wood W is carried into the processing work area, the side surface of the wood W is
a, 110b because they are in sliding contact with the front surface.
b serves as a guide for the wood W. Push plate 110
Since a and 110b fix the wood W between the side clamp plates 112a and 112b, they also have a role as wood fixing means. After cutting the wood W, as shown in FIG. 14, the operation of the air cylinders 130a and 130b causes the pressing plates 110a and 110b to move.
110b advances across the roller tables 102a, 102b and the processing table 103 and discharges the precut wood and the cut pieces W '.

Each side clamp plate 112a, 112b is connected to a rod 142a, 142 of a vertical air cylinder 140a, 140b.
b and fixed to the lower end of each vertical air cylinder.
140a and 140b are maintained so as to move vertically by vertical guide rods 144a and 144b. Vertical air cylinders 140a, 140b and vertical guide rods 144a, 144
The fixing members 146a and 146b that support the b are fixed to the distal end of a horizontal rod (only 150a is shown in FIG. 15) of a horizontal air cylinder (only 148a is shown in FIG. 15). It is movable in the horizontal direction by being guided by a rod (not shown).

As shown in FIGS. 14 and 15, the wood pressing drive roller 114 is connected to a drive motor 160, and the drive motor 160 is connected to a vertical rod of a vertical air cylinder 162.
164 is fixed to the lower end. When the wood (W) is sensed by a sensor (not shown), the vertical air cylinder 162 is actuated, and the drive roller 114 descends and comes into contact with the upper surface of the wood (W) to advance the wood (W) and press the upper surface. ing. The driven roller 116 for pressing wood is rotatably fixed to the lower end of a vertical rod 168 of a vertical air cylinder 166. When the vertical air cylinder 166 detects wood W by a sensor (not shown), the vertical air cylinder 162 is rotated. It works at the same time. Then the driven roller 116
Lowers and presses the upper surface of the forwarded wood W.

As shown in FIG. 15, the circular saw 118 is rotatably supported by the tip of a lever member 170, and the lever member 170 is supported by a vertical member 172 so as to be pivotable. The rod of the air cylinder 174 is attached to the rear end of the lever member 170.
The tip of 176 is rotatably connected. Lever member 17
A drive motor 180 is also fixed to 0, and a circular saw 118 is rotated by a belt 182 suspended by the drive motor 180. As shown in FIG. 15, while the wood W is moving, the rod 176 of the air cylinder 174 is in a retracted state, so that the circular saw 118 is at the upper position and does not touch the wood W.

The lower frame plate 190 of the movable processing device 104
The base plate 192 located below the drive motor 194,
A ball screw member 198 connected to the drive motor 194 via a belt 196, and a pair of guide rails 200a and 200b parallel to the conveyor bases 102a and 102b are provided. Further, on the lower surface of the lower frame plate 190, a female screw member 202 screwed with the ball screw member 198, and each guide rail
Guide members 204a, 204b moving on 200a, 200b
Are provided. When the drive motor 194 is operated by a command from a control device (not shown), the ball screw member 19 is actuated.
The whole of the movable processing equipment 104 is conveyed by the rotation of 8
It moves parallel to 102a and 102b.

Depending on the position of the movable processing device 104 which moves between the conveyor tables 102a and 102b, the conveyor tables
The space between one of the movable processing tables 103 and 102a or 102b may be too large. Therefore, elevating rollers 106 and 108 are provided to fill the gap. In the illustrated embodiment, the number of the elevating rollers 106 on the upstream side is one, and the number of the elevating rollers 108 on the downstream side is three, but is not limited thereto.

[B] Operation of the Apparatus As shown in FIGS. 13 and 15, the conveyor tables 102a, 102
b, a pair of push plates 110a, 110b located on one side of b
When the wood W moves along the pair of side clamp plates
112a, 112b and circular saw 118 are in the raised position (retracted position). The driving roller 114 and the driven roller 116 descend to press the moving wood W, thereby preventing the wood W from being displaced.

A predetermined stopper 210 is raised by a command from a control device (not shown) based on the processing data of the wood W, and the wood W is stopped. Here, for example, as shown in FIG. 16, the interval between the stoppers 210 is set to 50 cm, and the circular saw 118 is used.
When the cut length L of the wood W is 130 cm, the nearest stopper 210 is not raised but the next stopper 210 is set to 70 cm.
Raise 210. Then, the distance between the circular saw 118 and the raised stopper 210 is 120 cm.
104 only needs to move 10 cm upstream. By raising the optimal stopper 210 in this way, the distance that the movable processing device 104 has to move can be minimized. Movement of the movable processing device 104 is performed by rotation of a ball screw member 198 shown in FIGS.

When the wood W is stopped by the stopper 210, the pair of side clamp plates 112a and 112b are lowered onto the conveyor bases 102a and 102b, and are moved in the direction of the pair of push plates 110a and 110b. As shown in FIG. 17, a pair of push plates 110a and 110b and a pair of side clamp plates are provided.
The wood W is fixed from both sides with 112a and 112b. Next, the lever member 170 rotates as shown in FIG.
Cuts the wood W.

When the cutting of the wood W is completed, the pair of side clamp plates 112a and 112b, the driving roller 114, the driven roller 116, and the circular saw 118 are raised, and the stopper 210 is lowered. Next, the pair of push plates 110a and 110b advance and cross the conveyor tables 102a and 102b and the movable processing table 103. The push plate 110b sends the cut wood W to be used as precut wood to the adjacent line 300,
The push plate 110a discharges the scrap W 'to a discharge line (not shown). When the ejection of the cut wood is completed, the pair of push plates 110a and 110b retreat to the position on the side of the conveyor stand, and wait for the next wood W.

[3] Production Line FIG. 18 shows an example of a line including the apparatus for producing precut wood of the first and second embodiments. This production line includes an input conveyor 4 for processing wood W, and a pair of conveyor tables 102a, 102 connected to the input conveyor 4 and arranged on a straight line.
b, a movable processing device 104 (constituting an apparatus for producing precut wood according to the second embodiment) disposed between the conveyor tables 102a and 102b, and a conveyor table 102 adjacent to the movable processing device 104. a, 102b, a conveyor table 300, a buffer conveyor (chain conveyor) 302 orthogonal to the conveyor table 300, and a pair of conveyor tables 304a, 304 orthogonal to the buffer conveyor 302 and arranged on a straight line. b, the arm type robot 1 (constituting the precut wood production apparatus of the first embodiment) disposed between the two conveyor tables 304a and 304b, and the conveyor table 30
0, 304b. The feeding conveyor 4 is provided with a cutout saw 4a.

In this production line, the arm type robot 1
The apparatus of the second embodiment having a circular saw 118 is arranged on the upstream side of the apparatus of the first embodiment having a saw, and a line for bypassing the apparatus of the first embodiment is provided.
In a normal wooden building, a lot of woods not subjected to complicated joint processing are often used, but such woods are desirably processed quickly by the apparatus of the second embodiment. In addition, if wood cut to a predetermined length is supplied to the arm type robot 1, positioning at the time of joint processing is simplified, and as a result, the joint processing speed is improved. In addition, wood that is not subjected to connection processing bypasses the arm-type robot 1 so that the arm-type robot 1
Can be reduced. With such a configuration, it is possible to significantly reduce the time required for processing all the timber necessary for one wooden building. In addition, since the discharge conveyor 5 has a buffer function, the processed wood can be discharged in a desired order.

[0056]

According to the precut wood manufacturing apparatus of the present invention having the above structure, the optimum stopper is raised based on the wood processing data so that the movement of the apparatus for supporting the processing tool is minimized. Wood can be positioned quickly and accurately. In addition, by using a production line combining various processing apparatuses, the time required for the connection processing of all the wood can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an entire line including an apparatus for manufacturing precut wood according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a connection processed by the apparatus of the present invention.

FIG. 3 is a partial cross-sectional side view schematically showing the vicinity of a working area of the apparatus for manufacturing precut wood according to the first embodiment of the present invention, in which a movable worktable is in a horizontal position.

FIG. 4 is a partial cross-sectional side view schematically illustrating an example of a stopper used in the precut wood manufacturing apparatus of the present invention;
(a) shows a state where the stopper is retracted, and (b) shows a state where the stopper is raised.

FIG. 5 is a partial cross-sectional side view schematically showing another example of the stopper used in the precut wood manufacturing apparatus of the present invention.

FIG. 6 is a sectional view taken along line AA of FIG. 3, showing an example of a wood fixing device used in the precut wood manufacturing device according to the first embodiment of the present invention, in which a vice member is at a retracted position.

FIG. 7 is a cross-sectional view taken along the line AA of FIG. 3, showing an example of a wood fixing device used in the precut wood manufacturing device according to the first embodiment of the present invention, in which a vice member is in a state where wood is fixed.

FIG. 8 is a side view showing a roller device of a wood fixing device used in the precut wood manufacturing apparatus of the present invention.

FIG. 9 is a partial cross-sectional side view schematically showing the vicinity of a working area of the apparatus for manufacturing precut wood according to the first embodiment of the present invention, in which the movable worktable is at a lowered position.

FIG. 10 is a plan view showing an example of a piece discharge device used in the apparatus of the present invention, in which a push plate is at a retracted position.

FIG. 11 is a plan view showing an example of a piece discharge device used in the apparatus of the present invention, in which a push plate is in a forward position.

FIG. 12 is a side view showing an example of an arm type robot used in the precut wood manufacturing apparatus according to the first embodiment of the present invention.

FIG. 13 is a partial cross-sectional side view schematically showing the vicinity of a working area of a precut wood manufacturing apparatus according to a second embodiment of the present invention, showing a state in which wood is moving.

FIG. 14 is a plan view taken along line BB of FIG. 13 and shows a lower frame plate of a movable processing device in the precut wood manufacturing apparatus according to the second embodiment of the present invention.

FIG. 15 is a schematic partial cross-sectional view taken along a line CC of FIG. 13;

FIG. 16 is a partial cross-sectional side view schematically showing the vicinity of a working area of a precut wood manufacturing apparatus according to a second embodiment of the present invention, showing a state in which wood is cut.

FIG. 17 is a schematic partial cross-sectional view taken along line DD of FIG. 16;

FIG. 18 is a schematic plan view showing an example of a precut wood production line including the devices of the first embodiment and the second embodiment of the present invention.

FIG. 19 is a plan view schematically showing a conventional precut wood manufacturing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Arm type robot 2a, 2b, 102a, 102b ... Conveyor table 3a, 3b, 103 ... Movable processing table 4 ... Conveyor for inputting wood to be processed 5 ... Precut wood Discharge conveyor 6 ・ ・ ・ Control device 11 ・ ・ ・ Robot arms 21, 31, 120, 121 ・ ・ ・ Wood transport rollers 22, 32, 210 ・ ・ ・ Positioning stoppers 23a, 23b ・ ・ ・ Wood fixing device 34 ・ ・・ Snip discharge means 104 ・ ・ Movable processing devices 106, 108 ・ ・ ・ Elevating rollers 110a, 110b ・ ・ ・ Press plates 112a, 112b ・ ・ ・ Side clamp plates 114 ・ ・ ・ Drive rollers 116・ Follower roller 118 ・ ・ ・ Circular saw W ・ ・ ・ Wood

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-18311 (JP, A) JP-A-57-177703 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B27F 1/00 B27B 5/00 B27C 9/00

Claims (21)

(57) [Claims] 1. A pair of conveyor bases extending left and right across a wood working area, and a pair of left and right movable workings extending from an inner end of each conveyor base to the working area and vertically movable. A robot having a table, wood fixing means positioned near the inner end of each conveyor base, an arm for exchangeably supporting at least one processing tool for processing the wood fixed by the wood fixing means, A control device for issuing a command to the robot and the movable processing table based on the processing data, a plurality of protrudable wood positioning stoppers are arranged on the conveyor table, and based on the processing data. The wood is stopped by projecting a predetermined stopper and fixed by the wood fixing means, and the movable worktable is moved out of the working range of the working tool. An apparatus for manufacturing precut wood, wherein the wood is processed after being evacuated and after moving the robot arm by a supplementary distance. 2. The precut wood producing apparatus according to claim 1 , wherein a plurality of lumber positioning stoppers protrudable at least on a downstream conveyor table are arranged at a constant interval, and at least an upstream processing table. Wherein at least one protrudable stopper for positioning wood is disposed on the apparatus. 3. The apparatus for manufacturing pre-cut timber according to claim 1 or 2, the pre-cut timber the movable work table is characterized in that it is pivotable up and down around the inner end of each conveyor platform as an axis Manufacturing equipment. 4. The apparatus for manufacturing pre-cut timber according to any one of claims 1 to 3, each movable worktable apparatus for manufacturing pre-cut timber, characterized in that it comprises a plurality of rollers. 5. The apparatus for manufacturing a pre-cut timber according to any one of claims 1 to 4, when the movable work table is in the retracted position, the movable working platform of the roller dropping piece of wood downward An apparatus for manufacturing precut wood, characterized by rotating in a direction. 6. The apparatus for manufacturing a pre-cut timber according to any one of claims 1 to 5, further comprising a universal timber discharge means moves said movable work table top, the movable work table is in the retracted position An apparatus for manufacturing precut wood, wherein a piece of wood that has fallen at a certain time is reliably discharged from the movable worktable. 7. The apparatus for producing pre-cut wood according to claim 6 , wherein said wood discharge means includes a push plate movable on said movable processing table in a lateral direction, and a protruding and connecting member connected to said push plate. An apparatus for manufacturing precut wood, comprising: a retreating cylinder. 8. The apparatus for manufacturing a pre-cut timber according to any one of claims 1-7, wherein the timber securing means includes a flat fixing base, a pair of lateral devices for gripping the timber from the left and right on the fixed base Having a member and one vertical vice member gripped from above, after the wood abuts a predetermined stopper, the horizontal vice member repeats abutment on a side surface of the wood while moving back and forth, An apparatus for manufacturing precut wood, wherein the vertical vise member descends and presses the upper surface of the wood, thereby accurately positioning the wood. 9. The apparatus for manufacturing precut wood according to claim 8 , wherein said wood fixing means further comprises a vertical cylinder and a roller rotatably fixed to a tip of said vertical cylinder, wherein said roller rotates. An apparatus for manufacturing precut wood, characterized in that the upper face of the wood being transported is pressed while the wood is being transported, thereby accurately positioning the wood. 10. A unit integrally comprising a pair of conveyor tables extending left and right across a wood processing work area, a movable processing table horizontally movable between the two conveyor tables, wood fixing means and processing means. A movable processing device, and a control device that issues a command to the movable processing device based on the processing data of each piece of wood, wherein a plurality of protrudable timber positioning stoppers are arranged on the conveyor table, An apparatus for manufacturing precut wood, wherein the wood is stopped by projecting a predetermined stopper based on the processing data, and the movable processing apparatus is moved by a supplementary distance to process the wood. 11. The apparatus for producing precut wood according to claim 10 , wherein said wood fixing means is located on a side of a conveyor table and a movable processing table and serves as a guide when the wood is moved. An apparatus for manufacturing precut wood, comprising: a board; a pair of side clamp plates that fix the wood from both sides in cooperation with the vertical board; and a roller that presses the wood from above. In the manufacturing apparatus of the pre-cut wood according to 12. The method of claim 10 or 11, wherein the processing means producing apparatus precut wood, which is a circular saw which is supported on the pivotable lever member. 13. The precut wood producing apparatus according to claim 12 , wherein a slit is provided at a position corresponding to the circular saw on the movable worktable. . 14. The apparatus for manufacturing a pre-cut timber according to any one of claims 10 to 13, and characterized in that downstream freely plurality of timber positioning stopper protrudes conveyor stand are arranged at regular intervals Precut wood manufacturing equipment. In the manufacturing apparatus of the pre-cut wood according to any one of claims 15] claims 10-14, wherein the timber pressing roller has a vertically movable driving rollers located on the upstream side, vertically movable positioned downstream An apparatus for producing precut wood, comprising a driven roller. 16. The apparatus for manufacturing a pre-cut timber according to any one of claims 11 to 15, together with the side clamping plate is movable up and down by a vertical cylinder and a horizontal cylinder, is movable in the horizontal direction, the upper An apparatus for manufacturing precut wood, wherein the wood is fixed from both sides in cooperation with the vertical plate by lowering from the retracted position and moving horizontally in the vertical plate direction. 17. The apparatus for manufacturing a pre-cut timber according to any one of claims 11 to 16, wherein the vertical plate after machining of the wood is completed advanced laterally, the processed wood of the conveyor table An apparatus for producing precut wood, which discharges onto another conveyor stand on the side. 18. The apparatus for manufacturing a pre-cut timber according to any one of claims 11 to 17, wherein the movable work table apparatus for manufacturing pre-cut timber, characterized in that it comprises a plurality of rollers. 19. The apparatus for manufacturing a pre-cut timber according to any one of claims 11-18, between the two conveyor base are arranged a plurality of elevating rollers, one by the movement of the movable work table If the distance between the conveyor table and the movable processing table is too large, a required number of elevating rollers rise to fill the distance. 20. A precut wood production line having two or more precut wood production devices according to any one of claims 1 to 19 , wherein an upstream production device communicates with a downstream production device, and A conveyor for bypassing a downstream manufacturing device, wherein the bypass conveyor merges with a discharge conveyor of the downstream manufacturing device and enters a precut wood discharge conveyor. 21. The production line of pre-cut timber of claim 20, the apparatus for manufacturing the upstream claim 10
Using the apparatus for producing pre-cut timber according to any one of 1 to 19, pre-cut wood, characterized by using an apparatus for manufacturing pre-cut timber according to any one of claims 1-9 in the preparation apparatus of the downstream Production line.