JP2019018407A - Precut processing device - Google Patents

Abstract

To provide a processing device for feeding a plurality of building materials used in a wooden building and applying precut processing continuously and effectively.SOLUTION: A precut processing device comprises: a processing machine for applying precut processing to a building material 12 conveyed in a conveying passage 14 in a longitudinal direction; a position detection machine for detecting a conveyance start position of the building material 12; and a plurality of clamps for gripping the building material 12, fixing a position of the building material 12 during a processing operation, and moving along the conveying passage 14 before and after the processing so as to convey the building material 12. A material position calculation part adds to the conveyance start position a moving amount in which the clamp is moved along the conveying passage 14, and calculates a position of the building material 12 on the conveying passage. A processing position control part controls a processing position of the processing machine on the basis of the calculated material position. When an open space is generated in the upstream side of the conveying passage 14, a material conveyance control part performs control to receive a new building material 13 in the open space.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a precut processing apparatus for applying precut processing to building materials such as columns and horizontal members used in wooden construction.

  Building materials such as pillars and horizontal members used for wooden construction are pre-cut to be jointly processed with joints and hoses in advance at the factory in order to reduce work on the construction site. The pre-cut processing apparatus operates various processing machines under the control of a computer after positioning the input building material. Before starting this processing, it is necessary to prepare a processing for putting the building material into the precut processing apparatus and positioning it accurately. Various techniques have been developed to improve the efficiency of this preparation work (Patent Document 1).

Japanese Patent No. 2533008

The known prior art has the following problems to be solved.
In order to increase the efficiency of the precut processing, there is a method in which a plurality of devices are arranged in a line and the same number of building materials as those devices are simultaneously introduced into the line. However, this increases the equipment cost.
Materials such as terminal processing, scallop processing, and drilling processing can be efficiently conveyed by sequentially arranging different types of processing devices in a line and sequentially feeding building materials in order. If the work share of the processing machines is averaged, the line can be operated efficiently.
However, when there are a wide variety of building materials to be input, the processing time of each apparatus varies. That is, it is not easy to average the work sharing. There is a problem that the processing speed of the line is determined by the capability of the apparatus that takes the longest time for processing.

  An object of the present invention is to provide a precut processing apparatus that can efficiently convey building materials, efficiently arrange various processing machines, and easily increase the frequency of performing a plurality of processes simultaneously.

  The following configurations are means for solving the above-described problems.

<Configuration 1>
A device for feeding a plurality of building materials including pillars and horizontal members used in wooden construction and continuously pre-cutting them.
A conveyance path provided to convey the sent building material in the longitudinal direction;
A processing machine for pre-cutting the building material transported along the transport path;
A plurality of parts that grasp a predetermined part of the building material, fix the position of the building material during the processing operation by the processing machine, and move the building material by moving along the conveyance path before and after the processing. A clamp of
The amount of movement of the clamp is controlled so that the processing position of the building material on the transfer path coincides with the position of the processing machine, and the building material moves along the transfer path by one of the clamps, and upstream of the transfer path. When there is an empty space on the side, the new building material is held in the empty space with another clamp, and the processing of the new building material is started before the processing of the downstream building material is finished. A pre-cut processing device comprising a material conveyance control unit for controlling the material.

<Configuration 2>
The pre-cut processing device according to Configuration 1, wherein the conveyance path is set to a length capable of continuously arranging and conveying a plurality of building materials to be processed in the longitudinal direction.

<Configuration 3>
The plurality of processing machines include one that can move a position along a conveyance path, and based on the processing position of the building material, processing is performed so that the position of the processing machine matches the processing position. The precut machining apparatus according to Configuration 1 or 2, further comprising a machining position control unit that performs control to move the machine.

<Configuration 4>
A material position detection unit that detects the material position when the building material is thrown into the conveyance path and sets the building material conveyance start position;
Then, when building materials are transported by any of the clamps, a material for calculating the material position of the building material on the transport path by adding the amount of movement the clamp has moved along the transport path to the transport start position. The precut processing device according to any one of configurations 1 to 3, wherein a position calculation unit is provided.

<Configuration 5>
When the building material is transported on the transport path by the clamp and stops transporting, before the transport is started again by the clamp or another clamp, the leading or rear end of the building material or a predetermined mark is detected and A material position detector for detecting the material position of the building material;
Provided with a processing position control unit that performs control to move the processing machine so that the position of the processing machine matches the processing position based on the material position and processing position of the building material detected by the material position detection unit The precut processing device according to Configuration 1 or 2, characterized in that:

<Configuration 6>
The building material thrown into the conveyance path is conveyed in a state in which it is always gripped by one of the clamps until the processing by any of the processing machines is finished and discharged from the conveyance path. The precut processing apparatus in any one of thru | or 5.

<Configuration 7>
Any one of the constitutions 1 to 5, wherein the building material thrown into the conveyance path is conveyed by a plurality of clamps in order until it finishes processing by any of the processing machines and is discharged from the conveyance path. The precut processing apparatus according to 1.

<Effect of Configuration 1>
While a single building material is being transported through the line, various processing machines are used instead. If a plurality of processing machines simultaneously perform processing at a plurality of locations on a single building material, the processing can be performed efficiently. Furthermore, when an empty space is created on the upstream side of the conveyance path, the next new building material can be grasped with a clamp and put in. At that time, it is possible to control so that a plurality of processing machines simultaneously process at the most efficient position on one long building material on the conveyance path.
<Effect of Configuration 2>
If a plurality of building materials can be packed in the conveyance path and arranged in the longitudinal direction, the building materials can be processed continuously and efficiently.
<Effect of Configuration 3>
A processing machine that can move back and forth along the conveyance path or freely can be used. Thereby, the position of the processing machine can be controlled with high accuracy. A plurality of processing machines can simultaneously perform processing at the most efficient position, and the building material can be sent out from the apparatus in the shortest time.

<Effect of Configuration 4>
The amount of movement that the clamp has moved along the transport path is added to the transport start position, and the position of the building material on the transport path is always controlled, so the processing position is accurate regardless of the position of the building material on the transport path. Can be controlled.
<Effect of Configuration 5>
Even if the position of the building material is distorted due to the delivery of the clamp, etc., the position of the building material can be detected each time the conveyance is stopped by the clamp and the processing position is precisely controlled. .
<Effect of Configuration 6>
If the building material is conveyed on the conveyance path while being held by any one of the clamps, the material position of the building material can always be accurately calculated by precise position control of the clamp. In addition, the posture of supporting the building material can be accurately maintained. Building materials can be continuously fed into the conveyance path by separate clamps, so that the production efficiency can be increased as in the other examples.
<Effect of Configuration 7>
If the movement amount of each clamp is precisely controlled, the material position can be calculated by adding the movement amount of each clamp to the conveyance start position even when the building material is conveyed while being sequentially fed by a plurality of clamps.

(A) is a top view of the precut processing apparatus of this invention, (b) is the top view in the operation | movement. It is an Example block diagram of the control circuit for process position control of said apparatus. It is another Example block diagram of the control circuit for process position control. It is a side view of the apparatus which shows the example of control by the control circuit of FIG.2 and FIG.3. It is a perspective view which shows the specific example of the clamp 31. FIG. (A)-(g) is a side view of each timing in the concrete operation | movement of said apparatus. It is a conveyance path side view for demonstrating the modification of the conveyance method of a building material.

  Hereinafter, embodiments of the present invention will be described in detail for each example.

FIG. 1A is a plan view of the precut processing apparatus of the present invention, and FIG. 1B is a plan view during operation thereof.
This device is a device for feeding a plurality of building materials 12 including pillars and horizontal members used in wooden construction and continuously pre-cut them. In the center of the apparatus of the illustrated embodiment, a conveyance path 14 for conveying the building material 12 that has been fed in in the longitudinal direction is provided. A loading transport table 24 is provided on the entrance side of the transport path 14, and a discharge transport table 28 is provided on the exit side. The building material before the precut processing is accumulated in the input conveyance device 22, and the building material after the precut processing is accumulated in the discharge conveyance device 26.

  For example, building materials used for construction of one house are thrown from the loading and conveying device 22 one by one to the loading and conveying table 24. When the pre-cut processing is finished, the building material is transferred from the discharge conveyance table 28 to the discharge conveyance device 26. The building material is conveyed on the conveyance path 14 by, for example, the clamp 31 and the other six clamps.

  On both sides of the conveyance path 14, six processing machines 51 to 56 and 61 to 66 for left and right for pre-cutting the building material 12 to be conveyed are arranged. These processing machines are provided with tools for cutting building materials and forming grooves and holes, and those having various functions may be mixed along the conveyance path.

  The clamp 31 or the like has a function of grasping a predetermined part of the building material 12 and transporting it along the transport path. Although not shown, clamps that only support and do not have a function of conveying may be mixed. The clamp fixes the position of the building material during the processing operation by the processing machine, and moves along the transport path 14 before and after the processing to transport the building material 12.

  As shown in FIG. 1, it is preferable to set the conveyance path 14 to a length that allows a plurality of building materials to be processed to be continuously arranged and conveyed in the longitudinal direction. These building materials are conveyed downstream while being processed on the conveyance path. It is processed intensively at one place, or it is processed in several times while moving gradually downstream.

  If the conveyance path is set to such a length, a new building material can be put in as soon as an empty space is created on the upstream side of the previously conveyed building material. This makes it possible to increase the production efficiency by processing a plurality of building materials in parallel. In addition, a plurality of building materials are arranged in the longitudinal direction on the conveyance path, and it is as if a plurality of processing machines simultaneously process a single long building material 12 on the conveyance path 14. Can be controlled.

  In the plurality of processing machines, a machine whose position is fixed and a machine whose position can be freely moved along the conveyance path 14 may be mixed. Thereby, the position of a processing machine and the processing position of the building material on a conveyance path can be matched with high precision. For example, it may have only a position adjustment function of several millimeters along the conveyance path. In some cases, it may be sufficient to move the processing machine to increase the processing accuracy.

FIG. 2 is a block diagram of an embodiment of a control circuit for controlling the machining position of the above apparatus.
Before explaining the operation of the apparatus of FIG. 1, an example of machining position control will be described. This apparatus includes a material position calculation unit 16, a processing position control unit 18, and a material conveyance control unit 20. The position detector 41 has a function of detecting the leading end of the building material 12 when the building material 12 is put into the conveyance path 14 and acquiring the conveyance start position data of the building material 12.

  When the building material 12 is conveyed by the clamp 31, the material position calculation unit 16 adds the amount of movement of the building material 12 moved along the conveyance path 14 to the conveyance start position, and on the conveyance path 14 of the building material 12. It has a function to calculate the material position.

  The processing position control unit 18 controls the movement amount of the clamp so that the material position on the conveyance path 14 of the building material 12 matches the optimal processing position of each processing machine, or the building material is stationary. The processing position of the processing machine is controlled based on the material position. In this embodiment, since the processing position of the building material 12 is determined based on the calculated material position, the building material 12 can be positioned at the optimum position on the conveyance path 14 by the clamp.

  As shown in FIG. 1 (b), the material conveyance control unit 20 moves the building material 12 that has started processing to the upstream side of the conveyance path 14 when the conveyance path 14 is moved by a clamp for the next process. When an empty space is generated, control is performed so that a new building material 13 is held and received by another clamp in the empty space.

  Thus, even if the processing of the downstream building material 12 is not completed, the new building material 13 can be received in the transport path. It may be controlled to accept only a part of the tip of the new building material 13 and start processing the tip. Moreover, you may control to accept the whole new building material 13 in a conveyance path, and to start a process with a some processing machine. That is, one or a plurality of building materials can be fed into the transport path without any limitation, and the space on the transport path can be used freely and effectively.

  In addition, each processing machine may perform a certain process on the building material conveyed immediately before, or may move around the conveyance path and process a plurality of locations on the building material. Various building materials can be put into the pre-cut device, and processing specified for each building material can be performed. If the conveying path is set sufficiently long, a plurality of building materials can be processed simultaneously, and special long building materials can be processed while being conveyed in order from the tip portion.

  The number and arrangement of the processing machines arranged on both sides of the conveyance path 14 shown in FIG. 1 are arbitrary. If the arrangement of the processing machines is adjusted to the optimum position in advance according to the type and length of the building material, the preparation time for transporting and processing the building material can be minimized. Moreover, as shown in FIG.1 (b), the new process unit 50 can also be added as needed. That is, there is an effect that the conveyance path can be freely expanded and contracted.

FIG. 3 is a block diagram of another embodiment of the control circuit for controlling the machining position.
The circuit of the illustrated embodiment is provided with a processing position control unit 18 and a material conveyance control unit 20, and a plurality of position detectors 41 to 43 are used. In the embodiment of FIG. 2, the material position is controlled by the amount of movement of the clamp. For example, in FIG. 1, the building material 12 thrown into the conveyance path 14 is always held by any one of the clamps 12 until the processing by any processing machine is finished and discharged from the conveyance path 14. It may be conveyed. For this purpose, a guide or the like that returns to the upstream side again without colliding with other clamps after the plurality of clamps move from the upstream side to the downstream side of the conveyance path may be provided. Thereby, the material position can be controlled with extremely high accuracy. In addition, it is possible to accurately support the building materials being processed.

  Further, in FIG. 2, the building material can be controlled to be sequentially fed by the plurality of clamps 31 to 36 until the processing is finished and discharged from the conveyance path 14. Also in this case, if the movement amount of each clamp is precisely controlled, the material position can be calculated by adding the movement amount of each clamp to the conveyance start position. In this case, all the clamps may be driven by, for example, a linear motor.

  On the other hand, for example, when each clamp is driven by a hydraulic plunger or the like, the positional accuracy may be slightly lowered. Even when the clamps are moved with high accuracy, when the building material is transferred between the clamps, the posture of grasping the building material may be slightly distorted. In the embodiment of FIG. 3, when the building material is conveyed immediately before each of the processing machines 51 to 53 and the conveyance is stopped, the material position is detected before the conveyance is started again by the clamp or another clamp.

  The position detectors 41 to 43 may determine the material position by detecting the front and rear ends of the building material 12, the marks printed on the building material, and the like. In this way, the position of the building material 12 can be detected every time the conveyance is stopped by the clamp and the conveyance is stopped, and the machining position can be precisely controlled.

  The clamp is controlled to transport the building material to an optimal position in front of the next machine to process. At that time, after the material position is accurately detected by the position detector, the position of the processing machine is finely adjusted. Thereby, for example, the 1 mm deviation of the position control can be adjusted to improve the processing accuracy of the product.

  Specific control by the processing position control unit is as follows. First, the clamp is driven, and the building material is conveyed to a target position in front of the processing machine to be processed next. At this time, the position detector detects the position of the front end, the rear end of the building material, or the mark attached to the building material. The processing position control unit sets this detection position as the material position of the building material. Subsequently, the required movement amount of the processing machine is determined from the relationship between the material position of the building material, the processing position of the building material to be processed from now, and the current position of the processing machine. And a processing machine is moved so that the position of a processing machine and the said processing position may correspond.

FIG. 4 is a side view of the apparatus showing an example of control by the control circuit of FIGS.
For example, as shown to (a) of a figure, when building material 12 is newly thrown into an apparatus, the position detector 41 will detect the front-end | tip, and a conveyance start position will be determined. At this time, the building material 12 is grasped and supported by the clamp 31, and the tip portion of the building material 12 is processed by the processing machine 51. Next, as shown in (b), the clamp 32 approaches the clamp 31 and grips the tip of the building material 12.

  The clamp 31 now opens the building material 12 and leaves it to the clamp 32 for transport. That is, in this example, the clamp 31 temporarily supports the building material 12 but does not carry it. After the clamp 32 conveys the building material 12 as shown in (c) of the figure, the building material 12 is gripped and supported by the clamp 32 and the clamp 31. And the processing machine 52 and 53 process the building material 12 simultaneously.

  Thereafter, the clamp 32 changes the building material 12 and conveys the building material 12 so that the building material 12 is slightly returned in the upstream direction of the conveyance path, as shown in FIG. Then, the processing machine 51 is operated with the building material 12 supported by the clamp 32 and the clamp 31. For example, here, the rear end side of the building material 12 is cut into a predetermined dimension. Thereafter, the clamp 32 conveys the building material 12 to a place where the clamp 33 waits and delivers the building material 12 to the clamp 33.

  As described above, the building material 12 can be freely conveyed on the conveyance path by using a plurality of clamps, and various processes can be performed at the optimum position. Even in that case, in this embodiment, since the transfer start position is first determined by the position detector 41, it is always possible to accurately control the position of the building material by integrating the distances transferred by a plurality of clamps. In addition, the continuous processing operation | movement to a some building material is demonstrated later using FIG.

FIG. 5 is a perspective view showing a specific example of the clamp 31.
The clamp 31 is supported so as to freely roll and move on a roller 37 provided in the conveyance path. The roller 37 may be a guide plate that can slide the building material. The clamp 31 is configured to sandwich the building material 12 with arms from both sides, for example. In addition, if the clamp 31 has a function of lifting the building material 12 or rotating it in the direction of the arrow 38, more various processing becomes possible. In addition, a clamp having an arm for holding the building material and a roller for supporting the building material can be used. Furthermore, the thing which grabs a building material from an up-down direction can also be used.

FIGS. 6A to 6G are side views of timings during the specific operation of the above-described apparatus.
In this figure, in order to prevent the drawing from being complicated, all the processing machine main bodies are represented by a table having a fixed shape. In addition, clamps may be mixed with those that project the arm from the top of the building material or those that project the arm from the side.
First, in (a), when the building material 12 is introduced into the conveyance path, the position detector 41 detects the tip of the building material 12. The clamp 31 grips the tip of the building material 12. Here, the tip of the building material 12 is processed. In this figure, the hatched portion of the processing machine is operating.

  At this time, the clamp 31 continues to fix and support the building material 12. When the processing is completed, this time, in (b), the clamp 32 grips the tip of the building material 12. The clamp 31 opens the building material 12. The clamp 32 conveys the building material 12. You may convey the building material 12 to the place where the clamp 32 waits with the clamp 31. In (c), the clamp 32 and the clamp 31 support the building material 12, and the processing machine 52 processes the building material 12.

  Next, in (d), the clamp 32 moves upstream and grips the vicinity of the center of the building material 12. As shown in (e), the clamp 32 conveys the building material 12 and the clamp 33 grips the tip of the building material 12. The processing machine 53 processes the building material 12 in a state where the clamp 32 and the clamp 33 support the building material 12. Next, at (f), the clamp 33 moves the building material 12 slightly downstream. In this state, the building material 12 is simultaneously processed in various ways by the processing machine 52, the processing machine 53, and the processing machine 54.

  In parallel with this, the building material 13 is thrown into the conveyance path. Then, the building material 13 is processed by the processing machine 51 while being supported by the clamp 31. Next, at (g), the building material 12 finishes processing and is conveyed downstream by the clamp 33, the clamp 34, and the clamp 35. The building material 13 is conveyed by the clamp 32, and various processing is simultaneously performed by the processing machine 51, the processing machine 52, and the processing machine 53.

  For example, a plurality of building materials can be sequentially transported by a plurality of clamps and precut simultaneously on the transport path in the above-described procedure.

FIG. 7 is a side view of the conveyance path for explaining a modification of the method for conveying building materials.
The other conveyance method of building materials is demonstrated using this figure. Here, an explanation will be given focusing on the operation of performing position control while sequentially feeding the building material 12 using a plurality of clamps. One of the processing devices performs processing at the timing when the building material 12 is stationary on the conveyance path, but this description is omitted.

  First, as shown to (a), when the building material 12 is thrown into a conveyance path, the clamp 31 will grasp the front-end | tip part of the building material 12. FIG. Some processing is applied here. Next, as shown in (b), the clamp 31 grasps the building material 12 and conveys it downstream. When the leading end portion of the building material 12 reaches the clamp 32, the clamp 32 grips the leading end portion of the building material 12. Thereafter, as shown in (c), the clamp 31 releases the building material 12, moves upstream, and returns to the original position. In this state, another process is performed.

  Subsequently, in the state of (c), the clamp 31 grips the building material 12 again. At this time, the clamp 32 releases the building material 12. Thereafter, as shown in (d), the clamp 31 moves downstream while holding the building material 12. Here, the clamp 32 again grips the tip portion of the building material 12. Thereafter, as shown in (e), the clamp 31 releases the building material 12, moves upstream, and returns to the original position. This time, as shown in (f), the clamp 32 grips the building material 12, moves downstream, and passes it to the clamp 33. Although explanation of subsequent operations is omitted, various delivery controls can be performed according to the processing procedure and the position of the processing machine.

DESCRIPTION OF SYMBOLS 12 Building material 13 Building material 14 Conveyance path 16 Material position calculation part 18 Processing position control part 20 Material conveyance control part 22 Input conveyance apparatus 24 Input conveyance stand 26 Discharge conveyance apparatus 28 Discharge conveyance stand 31 Clamp 32 Clamp 33 Clamp 34 Clamp 35 Clamp 36 clamp 37 roller 38 arrow 41 position detector 42 position detector 43 position detector 44 position detector 50 processing unit 51 processing machine 52 processing machine 53 processing machine 54 processing machine 55 processing machine 56 processing machine 61 processing machine 62 processing machine 63 Processing machine 64 Processing machine 65 Processing machine 66 Processing machine

Claims (7)

A device for feeding a plurality of building materials including pillars and horizontal members used in wooden construction and continuously pre-cutting them.
A conveyance path provided to convey the sent building material in the longitudinal direction;
A processing machine for pre-cutting the building material transported along the transport path;
A plurality of parts that grasp a predetermined part of the building material, fix the position of the building material during the processing operation by the processing machine, and move the building material by moving along the conveyance path before and after the processing. A clamp of
The amount of movement of the clamp is controlled so that the processing position of the building material on the transfer path coincides with the position of the processing machine, and the building material moves along the transfer path by one of the clamps, and upstream of the transfer path. When there is an empty space on the side, the new building material is held in the empty space with another clamp, and the processing of the new building material is started before the processing of the downstream building material is finished. A pre-cut processing device comprising a material conveyance control unit for controlling the material.   The pre-cut processing apparatus according to claim 1, wherein the conveyance path is set to a length that allows a plurality of building materials to be processed to be continuously arranged and conveyed in the longitudinal direction.   The plurality of processing machines include one that can move a position along a conveyance path, and based on the processing position of the building material, processing is performed so that the position of the processing machine matches the processing position. The precut machining apparatus according to claim 1, further comprising a machining position control unit that performs control to move the machine. A material position detection unit that detects the material position when the building material is thrown into the conveyance path and sets the building material conveyance start position;
Then, when building materials are transported by any of the clamps, a material for calculating the material position of the building material on the transport path by adding the amount of movement the clamp has moved along the transport path to the transport start position. The pre-cut processing apparatus according to claim 1, further comprising a position calculation unit. When the building material is transported on the transport path by the clamp and stops transporting, before the transport is started again by the clamp or another clamp, the leading or rear end of the building material or a predetermined mark is detected and A material position detector for detecting the material position of the building material;
Provided with a processing position control unit that performs control to move the processing machine so that the position of the processing machine matches the processing position based on the material position and processing position of the building material detected by the material position detection unit The precut processing apparatus according to claim 1 or 2, wherein   The building material thrown into the conveyance path is conveyed in a state in which it is always grasped by any one of the clamps until it finishes processing by any of the processing machines and is discharged from the conveyance path. The precut processing device according to any one of 1 to 5.   6. The building material thrown into the conveyance path is conveyed by sequential feeding by a plurality of clamps until the processing by any of the processing machines is finished and discharged from the conveyance path. The pre-cut processing apparatus according to crab.

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