JP2012066555A - Wood processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts by carrying out sending and clamping of common lumbers with a common pressing device.SOLUTION: An upper pressing apparatus 40 and a horizontal pressing apparatus 50 are installed upstream of a processing machine 30. The pressing apparatuses 40 and 50 on the upstream side have a structure of rotating a pressing plate centering on a rear end by one-side rod-type pneumatic cylinders 46 and 55, can perform switching in three modes of advance, retreat, and neutrality by five-ports three-position-direction switching valves 110 and 120; and performs sending and positioning by the carry 14 which moves while position control is carried out along a ruler in a state where a push bar is contacted to a rear end of wood. Direction switching valves 110 and 120 are made a neutral mode when sending lumbers, and an advance mode when processing.

Description

  The present invention relates to a wood processing apparatus, and more particularly, to an improvement in a mechanism for transporting and clamping in an apparatus having a mechanism for transporting wood along a ruler surface when feeding material to a processing machine.

  In general, when a long and narrow material such as a feather pattern material (difference, rafters, joists, etc.) is sent in the longitudinal direction, it is sent along a table surface or a ruler surface. At this time, it is necessary to lightly press the material toward the table and the ruler so that the material does not rise from the table surface or separate from the ruler surface. On the other hand, the material sent to the processing position needs to be firmly clamped in order to perform processing such as cutting.

  Therefore, as shown in FIG. 13, the applicant has a lateral presser for pressing the workpiece against the ruler and an upper presser roller for pressing the workpiece against the table surface. In the lowered state, the tip of the workpiece transfer positioning device is abutted against the rear end of the workpiece to perform transfer positioning, and the workpiece positioned at the processing position is firmly pressed with the upper clamp for processing. A configured device was proposed (Patent Document 1).

JP2008-194895 (FIG. 1, 0030-0034)

  The device of Patent Document 1 uses a pneumatic cylinder with a small pressing force for the lateral pressing and the upper pressing roller so as not to interfere with the feeding material, and uses a pneumatic cylinder with a large pressing force for the upper clamp. It is configured so that the material does not move during processing.

  It is an object of the present invention to reduce the number of parts by enabling feeding and clamping with a common pressing device.

The wood processing apparatus of the present invention made to achieve the above object is an apparatus having a mechanism for transporting wood along a ruler surface during feeding to a processing machine, and has the following configuration: It is characterized by.
(1) Upstream and downstream of the processed material so as to form a straight conveyance path between an input conveyor for supplying unprocessed wood to the processing machine and a takeout conveyor for extracting processed wood from the processing machine. It is installed in.
(2) The input conveyor and the extraction conveyor are provided with a ruler perpendicular to the table surface on which the wood is placed so that the ruler surface is flush with both conveyors.
(3) An upstream pressing device is provided on the upstream side of the processing machine to press the wood from at least one of the upper side and the lateral direction when processing the wood by the processing machine.
(4) The upstream holding device is configured as a device that performs a pressing / retracting operation by a pressing member using a single rod type fluid pressure cylinder.
(5) The fluid pressure cylinder includes a forward mode in which the head side cylinder chamber is supplied and the rod side cylinder chamber is discharged; a reverse mode in which the head side cylinder chamber is discharged and the rod side cylinder chamber is supplied; The operation is controlled by a fluid circuit that controls supply and discharge of fluid pressure by a directional switching valve that can be switched to three modes of neutral mode.
(6) A fluid pressure supply / discharge control commanding device for commanding the neutral mode at the time of feeding and the forward mode at the time of processing when wood is present in the pressing range with respect to the upstream pressing device.

  Examples of the direction switching valve as described above include a 5-port 3-position direction switching valve. An example of the fluid pressure cylinder is a pneumatic cylinder. However, the present invention is not limited to a pneumatic cylinder, and may be a hydraulic cylinder. In addition, as the upstream pressing device, one or both of “upstream upper pressing device that presses the wood toward the table surface” and “upstream side pressing device that presses the wood toward the ruler surface” are provided. Good. In addition, if both are provided as an upstream holding | suppressing apparatus, the mechanism which measures the thickness and width | variety of wood can be combined by measuring the rod stroke of this upstream holding | suppressing apparatus. Furthermore, it is desirable to provide a lateral presser and upper presser device for wood having a large cross-sectional aspect ratio such as braces and a low height, and a wood with a small cross-sectional aspect ratio such as a stud is sufficient.

  According to the wood processing apparatus of the present invention, the upstream pressing device (upstream upper pressing device and / or upstream side pressing device) is when wood is present within the pressing range, and the condition of feeding material In some cases, the fluid pressure supply / discharge control command device commands the neutral mode. As a result, the fluid pressure cylinder of the upstream holding device is in a state where fluid pressure is supplied to both the head side cylinder chamber and the rod side cylinder chamber. At this time, the pressure receiving area of the head side cylinder chamber is larger than the pressure receiving area of the rod side cylinder chamber by an amount corresponding to the rod cross section, and as a result, the rod is advanced by a weak pressing force. As a result, the wood is pressed against the table surface and / or the ruler surface, but the pressing force is set to be weak, and if the rear end of the wood is pressed, the wood is fed. It is possible. On the other hand, the fluid pressure supply / discharge control command device commands a forward mode during machining. As a result, the fluid pressure cylinder of the upstream holding device is supplied with fluid pressure in the head side cylinder chamber, while the rod side cylinder chamber is discharged, so that the rod is pressed against the wood by a strong pressing force. Accordingly, the wood can be firmly pressed against the table surface and / or the ruler surface for processing such as cutting or cutting by the processing machine, and accurate processing can be realized. Thereby, it is not necessary to provide the apparatus which presses a timber to a table surface and / or a ruler surface in the upstream of a processing machine separately for the time of feeding and the time of processing.

Note that the wood processing apparatus of the present invention does not have to be provided with a pressing device that can exert a weak pressing force on the downstream side, and can be configured only by a clamper that exhibits a strong pressing force. This is because an alignment function by a weak pressing force is exhibited on the upstream side in charge of feeding. However, the wood processing apparatus of the present invention may further include the following configuration.
(7) A downstream pressing device is provided on the downstream side of the processing machine to press the wood from at least one of the upper side and the lateral direction when the wood is processed by the processing machine.
(8) The downstream holding device is configured as a device that performs a pressing / retreating operation by a pressing member by a single rod type fluid pressure cylinder, and the fluid pressure cylinder supplies the head side cylinder chamber to the rod side. A directional control valve that can be switched between three modes: forward mode with cylinder chamber discharge, reverse mode with head side cylinder chamber discharge and rod side cylinder chamber supply, and neutral mode with both cylinder chambers supplied. The fluid pressure supply / discharge control command device is configured to be controlled by a fluid circuit that performs fluid pressure supply / discharge control, and the fluid pressure supply / discharge control command device is connected to the fluid pressure direction switching valve of the downstream pressure device. When wood is present in the pressing range, the neutral mode is commanded during feeding and the forward mode is commanded during processing.

  As for the upper presser or side presser, or the upper presser and side presser on the downstream side, as well as the upstream side, by providing a device that can execute weak pressing in the neutral mode and strong pressing in the forward mode, the downstream side is also fed. There is no need to provide separate pressing devices for time and processing.

Here, the wood processing apparatus of the present invention is particularly effective in a wood processing apparatus having the following configuration.
(9) The carry conveyor side is provided with a carry that moves while being controlled in position along the ruler of the feed conveyor in a state where a push bar is brought into contact with the rear end of the wood.
(10) A tip detection sensor for detecting the tip of the wood is provided on the upstream side of the processing machine, and after the tip of the wood is detected by the tip detection sensor, the carry is advanced by a predetermined distance and the wood is pushed by the upstream holding device. A fluid pressure supply / discharge control commanding device for commanding the neutral mode when moved to a position where pressing is possible.

  When the carry as described above is used for transferring and positioning the wood, the wood remains pressed against the tip of the carry push rod because the wood is pressed against the table surface and the ruler surface with a weak pressing force during feeding. This is because the material can be fed without leaving and accurate positioning can be performed. That is, the wood can be fed while being in close contact with the tip of the push rod of the carry because the wood has a frictional resistance due to the pressure of the pressing device during the feeding by the carry. Also, by detecting the tip of the wood upstream of the processing machine and setting the upstream holding device to the directional switching valve in the neutral mode, the wood can be moved in a state without frictional resistance until it is close to the processing machine. The material can be fed, and the conveyance time can be shortened. Then, by carrying the feeding material by carry in a state in which friction resistance is applied from a certain position upstream of the processing machine and the table surface and the ruler surface are aligned, it is possible to realize a precisely positioned processing.

In addition, the wood processing apparatus provided with the carry as described above may further include the following configuration.
(11) The upstream holding device is connected to the rod of the fluid pressure cylinder so as to exert a pressing force on the wood by rotating the pressing member about the upstream end as a rotation center. thing.

  By configuring the upstream holding device in this way, for example, when the carry pushes to the place where the rear end of the wood is downstream of the holding device, the carry push rod opens the pressing member when moving forward. It becomes possible to push away. As a result, when the wood is fed, the upstream holding device can continue to be aligned with the table surface and the ruler surface while giving an appropriate frictional resistance until the rear end passes.

  According to the present invention, feeding and clamping can be performed with a common pressing device, and the number of parts can be reduced. In particular, a relatively lightweight and elongated feather pattern material is effective in that the feeding and positioning can be performed accurately and the number of parts can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The whole stalk material processing apparatus of Example 1 is shown, (A) is a top view, (B) is a front view. It is a front view which shows the principal part of the feathers material processing apparatus of Example 1. FIG. It is a top view which shows the principal part of the feathers material processing apparatus of Example 1. FIG. FIG. 3 is a front view of the upstream upper presser device in the feather material processing apparatus according to the first embodiment. FIG. 3 is a plan view of an upstream side presser device in the feather material processing apparatus according to the first embodiment. FIG. 3 is a pneumatic circuit diagram of a holding device on the upstream side in the feather material processing apparatus according to the first embodiment. It is a block diagram which shows the structure of the control system in the feathers material processing apparatus of Example 1. FIG. 4 is a flowchart of a main control routine in the feather material processing apparatus according to the first embodiment. 6 is a flowchart of a feather pattern material processing control routine in the feather pattern material processing apparatus according to the first embodiment. 6 is a flowchart of a feather pattern material processing control routine in the feather pattern material processing apparatus according to the first embodiment. 6 is a flowchart of a feather pattern material processing control routine in the feather pattern material processing apparatus according to the first embodiment. 6 is a flowchart of a feather pattern material processing control routine in the feather pattern material processing apparatus according to the first embodiment. It is explanatory drawing of a prior art.

  Below, the Example of the feathers material processing apparatus to which this invention is applied is described.

  As shown in FIGS. 1 to 3, the feather material processing apparatus 1 according to the first embodiment includes a processing machine 30 between an input conveyor 10 and a take-out conveyor 20 that are arranged so as to constitute a straight conveyance path. ing.

  The input conveyor 10 includes a table 11 on which the workpiece W is placed, a ruler 12 that is erected vertically from the inner edge of the table 11, and a guide rail 13 that is installed behind the ruler 12 in parallel with the table 11. And a carry 14 that conveys the workpiece W guided by the guide rail 13 and placed on the table 11.

  The carry 14 includes a carry body 14a that meshes with the guide rail 13, and a push bar 14b that extends toward the processing machine 30 on the table 11 in parallel with the guide rail 13 on the front side of the carry body 14a. The front end of the push bar 14b is brought into contact with the rear end of the workpiece W, and the workpiece W is pushed and fed in the direction of the processing machine 30 to perform positioning for wood processing. The ruler 12 guides the side surface of the workpiece W so that the workpiece W does not shift in the width direction during feeding by the carry 14, and the workpiece W is also clamped when clamping the workpiece W during wood processing. It has a role to guide so that it is located at a fixed position.

  The take-out conveyor 20 is constituted by a belt conveyor 21 and supports the workpiece W with the upper surface of the belt as a table surface. A ruler 22 is also installed behind the belt conveyor 21. Like the ruler 12 of the input conveyor 10, this ruler 22 guides the workpiece W so that it does not shift in the width direction during feeding, and the workpiece W is also clamped when clamping the workpiece W for wood processing. It has a role to guide so that it is located at a fixed position. The ruler 12 of the input conveyor 10 and the ruler 22 of the take-out conveyor 20 are installed so that their guide surfaces are flush with each other.

  In the present embodiment, the processing machine 30 is a circular saw cutting machine and includes a circular saw shaft 32 on which a circular saw blade 31 is mounted. The circular saw shaft 32 is attached to the tip of the swing arm 33 and is rotationally driven by a belt drive by a motor 34 installed on the lower end side of the swing arm 33. The swing arm 33 is rotated by a pneumatic cylinder 33b (not shown in FIGS. 2 and 3, see FIG. 7) via a crank mechanism (not shown). In the forward movement operation and the backward movement operation of the pneumatic cylinder 33b, the rotation operation is performed by the operation of the crank mechanism to move from the raised position to the lowered position and return to the raised position again. As a result, the circular saw blade 31 slowly starts to swing from the top dead center position of the crank mechanism when the pneumatic cylinder 33b is set to the forward mode or the reverse mode, and then the speed is increased to the bottom dead center. When it reaches the position, it becomes a slow swing again, then increases in speed and stops slowly at the top dead center position.

  A processing machine table 35 having the same height as the table 11 of the input conveyor 10 is installed upstream of the circular saw blade 31 of the processing machine 30. A ruler 36 is also erected on the processing machine table 35 so as to be positioned on an extension line of the ruler 12 of the input conveyor 10. The ruler 36 has a height that is sufficiently smaller than the ruler 12 and lower than the minimum thickness of the workpiece that is scheduled to be machined. Further, the input conveyor side end 35a of the processing machine table 35 is bent downward, and the input conveyor side end 36a of the ruler 36 is bent backward, so that the workpiece W fed from the input conveyor 10 can be smoothly received. It is configured like this. The upstream upper pressing device 40 and the upstream side pressing device 50 are installed at the installation location of the processing machine table 35.

  Further, on the downstream side of the circular saw blade 31 of the processing machine 30, a processing machine belt conveyor 37 having the same top surface height as the belt conveyor 21 of the takeout conveyor 20 is installed. A ruler 38 is also erected on the belt conveyor 37 in the processing machine so as to be positioned on an extension line of the ruler 22 of the take-out conveyor 20. Similarly to the upstream ruler 36, the ruler 38 is sufficiently lower in height than the ruler 22 and lower than the minimum thickness of the workpiece to be machined. Further, on the downstream side of the processing machine, the upstream end of the ruler 22 on the take-out conveyor 20 side is configured as a chamfered portion 22a so that the workpiece W can be smoothly received from the diagonally rear notch. . A downstream upper pressing device 60 and a downstream side pressing device 70 are installed at the installation location of the processing machine belt conveyor 37.

  As shown in FIGS. 2 to 4, the upstream upper pressing device 40 includes a portal frame 41 having columns vertically provided in front of and behind the processing machine table 35, and upper portions of the columns before and after the portal frame 41. The horizontal frames 42, 42 extending in the horizontal direction from the upstream side to the upstream side (the right side in the figure), and the horizontal shaft 42 by a bearing 43 at the tip of the horizontal frames 42, 42 so as to be sandwiched between the horizontal frames 42, 42 An upper presser plate 44 pivotally supported around the upper presser plate 44, and a connecting metal fitting 45 rotatably attached to the upper surface of about 1/3 of the entire length from the tip of the upper presser plate 44 via a bracket 45a. A pneumatic cylinder 46 having a cylinder rod 46a coupled to the coupling fitting 45, and a cylinder support frame 47 that rotatably supports the upper end of the pneumatic cylinder 46 are provided. The portal frame 41 is formed such that the upper plate 41 a is higher than the table surface of the processing machine table 35. In addition, a concave portion 41b that opens toward the upstream in the conveying direction so as to receive the cylinder rod 46a of the pneumatic cylinder 46 is formed in the center of the upper plate 41a. The cylinder support frame 47 is erected before and after the recessed portion 41b. Further, the top end portion of the upper pressing plate 44 is an upward bent portion 44a bent upward.

  As shown in FIGS. 2, 3, and 5, the upstream side presser 50 includes a front frame 51 that extends horizontally toward the front on the front side of the processing machine table 35, and a bearing at the base side end of the front frame 51. A horizontal holding plate 53 pivotally supported by a vertical axis 52 by means of 52, a connecting fitting 54 rotatably attached to the front side of the entire length of the horizontal holding plate 53, and the connecting fitting. The pneumatic cylinder 55 is connected to the cylinder rod 55a, and the front end of the pneumatic cylinder 55 is rotatably supported by the front end portion of the front frame 51. The lateral pressing plate 53 is made of a plate material parallel to the upper surface of the processing machine table 35, and the trailing edge 53b is processed into a shape that curves from the front end 53a to the front side from about ¼ of the entire length.

  As shown in FIGS. 2 and 3, the downstream upper pressing device 60 is attached to the vertical rods 61 and 61 installed in parallel to the back side of the belt conveyor 37 in the processing machine and the upper ends of these vertical rods 61 and 61. The upper holding plate 62, a connecting plate 64 that connects the lower ends of the vertical rods 61 and 61, and a pneumatic cylinder 65 that is connected to the center of the connecting plate 64 with the rod tip facing downward. The upper pressing plate 62 is configured by a T-shaped flat plate in a plan view, and is configured so that a portion of the T-shaped horizontal bar overlaps the belt conveyor 37 in the processing machine.

  As shown in FIGS. 2 and 3, the downstream side holding device 70 includes a pneumatic cylinder 71 installed horizontally with a rod facing backward on the front side of the belt conveyor 37 in the processing machine, and the pneumatic cylinder 71. A horizontal pressing plate 73 attached to the tip of the rod via a connecting plate 72 and guide rods 74, 74 extending rearward from the left and right ends of the connecting plate 72 are provided. These guide rods 74, 74 are support plates 75, 76. Is supported horizontally. The horizontal holding plate 73 is formed by cutting a flat plate having a thickness smaller than that of the minimum thickness of the workpiece to be processed into a π shape, and its lower surface is positioned slightly above the upper surface of the conveyor. Is attached. The edge on the side of the ruler 38 is flat and has a shape in which reliefs by corner cutting are formed at both left and right ends.

  Further, in the apparatus of the present embodiment, as shown in FIG. 3, a window portion 81 is formed from the upstream rear edge of the processing machine table 35 to about ½ of the table width. A printing device 82 that performs printing from below to above is also installed. Further, a photoelectric sensor for detecting that the tip of the workpiece W has reached is installed at the left end portion of the input side conveyor 10, and the pneumatic cylinder 46 of the upstream upper presser 40 and the upstream side The pneumatic cylinder 55 of the pressing device 50 includes a linear sensor and is configured to detect a stroke amount.

  Next, the pneumatic circuit of the pneumatic cylinders 46 and 55 of the upstream upper presser 40 and the upstream side presser 50 will be described. As shown in FIG. 6, the pneumatic cylinders 46 and 55 are configured to be switched to any one of three states of forward, backward, and neutral by the direction switching valves 110 and 120, respectively.

  The direction switching valves 110 and 120 are composed of 5-port, 3-position solenoid valves, and valve bodies 112, 122 that can be switched to 3 positions are accommodated in the valve housings 111, 121. The valve housings 111 and 121 are provided with an input port IN, a pair of output ports A and B, and a pair of exhaust ports R1 and R2.

  The pneumatic cylinders 46 and 55 include head side cylinder chambers 46c and 55c and rod side cylinder chambers 46d and 55d defined by pistons 46b and 55b. The head side cylinder chambers 46c and 55c are connected to the output port A of the direction switching valves 110 and 120 through supply / discharge passages 113 and 123, and the rod side cylinder chambers 46d and 55d are changed over through the supply and discharge passages 114 and 124. It is connected to the output port B of the valves 110 and 120.

  The input ports IN of the direction switching valves 110 and 120 are connected to an air supply source 130, and the exhaust ports R1 and R2 are open to the atmosphere via silencers 141 and 142, respectively.

  The valve bodies 112 and 122 are provided with a flow path for switching to three positions: a rod advance position, a rod retract position, and a neutral position. The flow path at the rod advance position allows the input port IN and the output port A to communicate with each other, and allows the output port B and the exhaust port R2 to communicate with each other, and the exhaust port R1 is closed. The flow path in the rod retracted position allows the input port IN and the output port B to communicate with each other, allows the output port A to communicate with the exhaust port R1, and closes the exhaust port R2. The neutral position flow path allows both the input port IN and the output ports A and B to communicate with each other, and the exhaust ports R1 and R2 are both closed.

  Throttle valves 113a, 114a, 123a, 124a are provided in the supply / discharge passages 113, 114, 123, 124, respectively, and check valves 113b, 114b, 123b, 124b are connected in parallel to the respective throttle valves. ing. Each check valve 113b, 114b, 123b, 124b is connected by the direction switching valve 110, 120 so as to be in the forward direction when the supply / discharge passages 113, 114, 123, 124 are on the air supply side.

  When the valve bodies 112 and 122 are switched to the forward position, the high-pressure air from the air supply source 130 passes through the direction switching valves 110 and 120 and the check valves 113b and 123b of the supply / discharge passages 113 and 123, and the head side cylinder chamber 46c. , 55c. On the other hand, the air in the rod side cylinder chambers 46d and 55d is discharged through the throttle valves 114a and 124a and the direction switching valves 110 and 120 in the supply / discharge passages 114 and 124. As a result, the cylinder rods 46a and 55a move forward.

  When the valve bodies 112 and 122 are switched to the retracted position, the high-pressure air from the air supply source 130 passes through the direction switching valves 110 and 120 and the check valves 114b and 124b of the supply and discharge passages 114 and 124, and the rod side cylinder chamber 46d. , 55d. On the other hand, the air in the head side cylinder chambers 46c, 55c is discharged through the throttle valves 113a, 123a and the direction switching valves 110, 120 in the supply / discharge passages 113, 123. As a result, the cylinder rods 46a and 55a move backward.

  When the valve bodies 112 and 122 are switched to the neutral position, the high-pressure air from the air supply source 130 passes through the direction switching valves 110 and 120 and the check valves 113b, 114b, 123b, and 124b of the supply / discharge passages 114 and 124. It is supplied to the side cylinder chambers 46c and 46d and the rod side cylinder chambers 46d and 55d. Here, the rod-side cylinder chambers 46d and 55d are smaller in pressure receiving area by the rod diameter than the pressure-receiving areas of the head-side cylinder chambers 46c and 55c. As a result, the rods 46a and 55a move forward slowly.

  When the cylinder diameter is D, the rod diameter is d, and the pressure is P, the rod pressing force in the forward mode and the neutral mode can be calculated by the following equation.

[Formula 1]
[Forward mode]
π / 4 · D ² × P

[Formula 2]
[Neutral mode]
π / 4 · d ² × P

  That is, a strong pressing force proportional to the square of the cylinder diameter is generated in the forward mode, and a weak pressing force proportional to the square of the rod diameter is generated in the neutral mode.

  In addition, the pneumatic cylinder 65 of the downstream upper pressing device 60 and the pneumatic cylinder 71 of the downstream side pressing device 70 are also shown in FIG. 6 using a five-port two-position direction switching valve similar to the upstream pressing device. It is controlled by a pneumatic circuit similar to that described above, and is controlled to switch between forward mode, reverse mode and neutral mode.

  Next, the control system of the embodiment will be described. As shown in FIG. 7, in the present embodiment, in a series of processing of the feather pattern material, the carry 14, the belt conveyor 21, the circular saw shaft driving motor 34, the swing arm pneumatic cylinder 33b, the in-machine belt conveyor 37, the upstream The pneumatic cylinder 46 (direction switching valve 110) of the upper side pressing device, the pneumatic cylinder 55 (direction switching valve 120) of the upstream side pressing device, the pneumatic cylinder 65 of the downstream upper pressing device, and the downstream side pressing device. The pneumatic cylinder 71, the printing device 82, the carry-in device 151 for transferring the work material to the input conveyor 10, the carry-out device 152 for taking out the processed material from the take-out conveyor 20, and the dust collector 153 are NC-controlled by the control device 150. Is done. The control device 150 includes a photoelectric sensor 10s installed at the table advance end of the input conveyor 10, a linear sensor 46s installed in the pneumatic cylinder 46 of the upstream upper pressing device, and an upstream side pressing device. The detection signal from the linear sensor 55s provided in the pneumatic cylinder 55 and the detection signal from the contact sensor 14s1 and encoder 14s2 provided in the carry 14 are input.

  In addition, the control device 150 reads feather pattern processing data created using CAD for each house, converts it into NC data, and executes drive control of each device according to a control program described later. Each device executes operations such as material loading / unloading, clamping / unclamping, and processing according to the NC data received from the control device 150. Each of these devices is configured to transmit a signal notifying the start and end of operation to the control device 150. In addition, the material of the dimension corresponding to the material input order determined by the processing data created by CAD is set by the operator in the carry-in device 151 installed on the front side of the input conveyor 10.

  Next, the content of the control process by the machining control program executed by the control device 150 will be described based on the flowcharts of FIGS.

  As shown in FIG. 8, when the machining data is read (S10), the control device 150 converts the machining data into NC data (S20). Then, the dust collector 153 is driven (S30), and the feather material processing control is started based on the NC data (S40). The processing of the feather material processing is continued until the processing for one building is completed (S50: NO → S40), and when the processing for one building is completed (S50: YES), the processing for feathering material processing control is performed. At the same time, the dust collector 153 is stopped and the process is terminated (S60).

  In the feather material processing control process, as shown in FIG. 9, first, the carry-in device 151 is driven to carry the work material W onto the table 11 of the input conveyor 10 (S100). Next, advance of the carry 14 is started (S110). When a signal for detecting contact with the rear end of the workpiece W is input from the contact sensor 14s1 provided at the tip of the push rod 14b of the carry 14 (S120: YES), the signal is input from the encoder 14s2. The encoder signal counting is started (S130). When the tip detection signal is input from the photoelectric sensor 10s (S140: YES), the carry 14 is temporarily stopped (S150), and the length L of the workpiece W is calculated based on the encoder signals counted so far. (S160). Subsequently, the count value of the encoder signal is reset and the carry 14 is started to advance at a low speed (S170), and the count of the encoder signal is restarted (S180).

  When the count value of the encoder signal reaches the predetermined value V0 (S190: YES), the carry 14 is stopped (S200). This predetermined value V0 is set corresponding to the distance from the installation position of the photoelectric sensor 10s to the material size measurement position. In this embodiment, the material size measurement position is set near the tip position of the upper pressing plate 44 of the upstream upper pressing device 40 of the processing machine table 35.

  When the carry 14 is stopped in this manner, the pneumatic cylinder 46 of the upstream upper presser 40 and the pneumatic cylinder 55 of the upstream side presser 50 are both controlled to the neutral mode as shown in FIG. S210). Then, based on the signals from the linear sensors 46s and 55s of the pneumatic cylinders 46 and 55, the stroke amount at the completion of the cylinder rod projection is input (S220), and the stroke amount input from the linear sensor 46s and The plate thickness t of the workpiece W is geometrically calculated from the design conditions of the upstream upper pressing device 40 (dimensions, mounting angles, etc. of each part) (S230), and the stroke amount input from the linear sensor 55s and the upstream The width b of the workpiece W is geometrically calculated from the design conditions of the side lateral holding device 50 (sizes and mounting angles of each part) (S240).

  Then, it is determined whether or not the length L, the plate thickness t, and the width b are correct as dimensions to be processed (S250). If the dimensions are not correct (S250: NO), an error is notified (S260). On the other hand, when the dimensions are correct (S250: YES), the carry 14 is moved forward (S270), moved forward by a predetermined distance (S280: YES), stopped (S290), and the printing device 82 is driven to execute printing. (S300). This predetermined distance is set based on the distance from the material size measurement position to the cutting position of the workpiece W by the circular saw, and is measured based on the encoder signal of the carry 14.

  After the carry 14 is stopped in this way, next, as shown in FIG. 11, both the pneumatic cylinder 46 of the upstream upper presser 40 and the pneumatic cylinder 55 of the upstream side presser 50 are controlled to advance mode ( S310). Until now, since the control was in the neutral mode, the work material W was only applied with the weak pressing force shown in [Formula 2], but this time, the strong pressing force shown in [Formula 1] is applied. Thus, it is firmly clamped in an aligned state by the upper surface of the processing machine table 35 and the front surface of the ruler 36.

  Subsequently, the circular saw shaft driving motor 34 is driven (S320), and the swing arm pneumatic cylinder 33b is controlled to the forward mode or the reverse mode (S330). When the pneumatic cylinder 33b moves to the operating end (S340: YES), the circular saw shaft driving motor 34 is stopped (S350).

  Here, the swing arm pneumatic cylinder 33b is provided with a direction switching valve for two-position control in the forward mode and the reverse mode. Then, as described above, the circular saw is lowered from the upper standby position and then raised again to the standby position by the speed change similar to the simple vibration in both the forward mode and the reverse mode by the action of the crank mechanism. be able to. Therefore, the tip of the workpiece W is accurately and smoothly cut by the control of S320 to S350.

  When the cutting of the tip is completed in this way, the pneumatic cylinder 46 of the upstream upper presser 40 and the pneumatic cylinder 55 of the upstream lateral presser 50 are both returned to the neutral mode (S410). Then, the carry 14 is advanced (S420). And if the carry 14 moves forward a predetermined distance, this will be stopped (S430). The predetermined distance at this time is a distance corresponding to the processing dimension (the overall length of the feather pattern material product). Therefore, it is determined based on the NC data generated by the process of S20.

  After the carry 14 is stopped in this manner, the pneumatic cylinder 65 of the downstream upper pressing device 60 and the pneumatic cylinder 71 of the downstream lateral pressing device 70 are both controlled to advance mode (S510). Thereby, the workpiece W is clamped in a state in which it is firmly pressed against the upper surface of the belt conveyor 37 in the processing machine and the front surface of the ruler 38 on the downstream side of the cutting position by the circular saw. At this time, both the pneumatic cylinder 46 of the upstream upper presser 40 and the pneumatic cylinder 55 of the upstream side presser 50 may remain in the neutral mode.

  Subsequently, the circular saw shaft driving motor 34 is driven (S520), and the swing arm pneumatic cylinder 33b is controlled to the reverse mode or the forward mode (S530). When the pneumatic cylinder 33b moves to the operating end (S540: YES), the circular saw shaft drive motor 34 is stopped (S550). Thereby, the rear end cutting of the workpiece W is executed.

  Next, as shown in FIG. 12, it is determined whether or not a multi-book picking target has been completed (S610). If the target is the “multiple picking” that cuts out a plurality of feather pattern material products from a single workpiece W and the multiple picking has not been completed (S610: YES), the printer 82 is driven. The printing is executed (S620), and the pneumatic cylinder 65 of the downstream upper pressing device 60 and the pneumatic cylinder 71 of the downstream side pressing device 70 are both controlled to the neutral mode (S630), and the carry 14 is advanced. (S640). Then, when the carry 14 moves forward a predetermined distance, it is stopped (S650). The predetermined distance at this time is also determined based on the NC data generated by the process of S20 as a distance corresponding to the machining dimension.

  After the carry 14 is stopped in this way, the pneumatic cylinder 65 of the downstream upper presser 60 and the pneumatic cylinder 71 of the downstream side presser 70 are again controlled to advance mode (S710). Subsequently, the circular saw shaft driving motor 34 is driven (S720), and the swing arm pneumatic cylinder 33b is controlled to the reverse mode or the forward mode (S730). When the pneumatic cylinder 33b moves to the operating end (S740: YES), the circular saw shaft driving motor 34 is stopped (S750). Thereby, the rear end cutting of the second feather material is executed. Note that the front end cutting of the second feather handle material is completed by the rear end cutting of the first feather handle material.

  Then, the determination of S610 is performed again, and when the multiple sampling is not completed (S610: YES), the processing of S620 and subsequent steps is repeated.

  On the other hand, if it is determined in S610 that the multiple picking is not performed or the multiple picking is completed (S620: NO), the carry 14 is advanced to the forward end (S810). ), The pneumatic cylinder 46 of the upstream upper pressing device 40, the pneumatic cylinder 55 of the upstream lateral pressing device 50, the pneumatic cylinder 65 of the downstream upper pressing device 60, and the pneumatic cylinder 71 of the downstream lateral pressing device 70. All are controlled to the retreat mode (S820), the carry 14 is retreated (S830), and the belt conveyor 21 and the in-machine belt conveyor 37 of the takeout conveyor 20 are driven in the takeout direction (S840). Thereby, each holding | suppressing apparatus 40-70 will be in an unclamp state, all the timber is carried out on the taking-out conveyor 20, and the carry 14 will reset to an initial position. The forward end of the carry 14 is set to a position where the tip of the push rod 14b is immediately before the upstream pressing devices 60, 70.

  Then, the carry-out device 152 is driven to take out the processed material and carry it out to the processed material stocker installed in front of the conveyor 20 (S850). Then, it is determined whether or not there is a next workpiece (S910). If there is (S910: YES), the processing of S100 and subsequent steps is started. On the other hand, when there is no next processed material (S910: NO), the feather material processing control process is terminated.

  In the feather material processing control, the short remaining material is dropped to the front side of the circular saw, and the long remaining material is sent to the take-out conveyor 20 by the carry 14.

  As described above, according to the present embodiment, a directional switching valve of 5 ports and 3 positions is employed in the pneumatic circuit of the pneumatic cylinders 46, 55, 65, 71 of the pressing devices 40, 50, 60, 70. By making the forward mode when cutting and the neutral mode when feeding the workpiece, a weak press and a strong press are realized only by switching the valve. And with the weak press, the workpiece W can be moved along the table surface and the ruler surface, and a stable feeding operation can be performed with high accuracy.

  Since the upstream pressing devices 40 and 50 are configured to press the workpiece by rotating the pressing plate, the carry 14 is moved when the carry 14 is advanced when it is weakly pressed in the neutral mode. Can be pushed out without disturbing the feeding operation of the carry 14.

  As mentioned above, although the Example of this invention was described, this invention is not restricted to the Example mentioned above, In the range which does not deviate from the summary, it can implement in a various aspect further.

  For example, the pressing device may be driven by using hydraulic pressure instead of pneumatic pressure. Further, the contact portion of the pressing device with the workpiece W may have a roller structure in order to reduce frictional resistance during feeding. Furthermore, the pressing device may be formed only from the upper surface or from the side surface depending on the purpose. In addition, the processing for the feather pattern material may be applied to a processing machine that performs not only cutting but also cutting processing. Moreover, it can also be applied to a wood processing apparatus other than a feather pattern material.

  If you want to ensure the stability of the feeding material, or if the warping or bending of the processed material is large, there are cases where it is better to hold it with a strong force even during feeding. If it is the structure which rotates and presses a processed material, even if a strong pressing force is exhibited, it is possible to send a processed material.

  It is useful for pre-cut processing of materials for wooden houses, and it is possible to achieve both cost reduction of factory equipment and high-precision processing.

DESCRIPTION OF SYMBOLS 1 ... Feather material processing apparatus 10 ... Input conveyor 10s ... Photoelectric sensor 11 ... Table 12 ... Ruler 13 ... Guide 14 ... Carry 14a ... Carry body 14b ...・ Push bar 14s1 ... Contact sensor 14s2 ... Encoder 20 ... Extraction conveyor 21 ... Belt conveyor 22 ... Ruler 22a ... Chamfer 30 ... Processing machine 31 ... Circular saw Blade 32 ... Circular saw shaft 33 ... Swing arm 33b ... Pneumatic cylinder 34 ... Motor 35 ... Processing machine table 35a ... End of conveyor side 36 ... Ruler 36a ... -Feed conveyor side end 37 ... In-machine belt conveyor 38 ... Ruler 40 ... Upstream upper presser 41 ... Portal frame 41a ... Upper plate 41b ... Recessed 42 ... Horizontal frame 43 ... Bearing 44 ... Upper holding plate 44a ... Upward bent portion 45 ... Connecting bracket 45a ... Bracket 46 ... Pneumatic cylinder 46a ... Cylinder rod 46b ... Piston 46c ... Head side cylinder chamber 46d ... Rod side cylinder chamber 46s ... Linear sensor 47 ... Cylinder support frame 50 ... Upstream side presser 51 ... Front frame 52 ··· Bearing 53 ··· Horizontal holding plate 53a ··· Horizontal holding plate tip 53b ··· Horizontal holding plate trailing edge 54 · · · Fitting 55 · · · Pneumatic cylinder 55a · · · Cylinder rod 55b ··· Piston 55c ... Head side cylinder chamber 55d ... Rod side cylinder chamber 55s ... Linear sensor 60 ... Downstream side upper holding device 61 ... Vertical rod 62 ... Upper holding plate 64 ... Connection plate 65 ... Pneumatic cylinder 70 ... Downstream side holding device 71 ... Pneumatic cylinder 72 ... Connection plate 73 ... Horizontal holding Plate 74 ... Guide rod 75, 76 ... Support plate 81 ... Window portion 82 ... Printing device 110, 120 ... Directional switching valve 111, 121 ... Valve housing 112, 122 ... Valve body 113, 114, 123, 124 ... Supply / discharge passage 113a, 114a, 123a, 124a ... Throttle valve 113b, 114b, 123b, 124b ... Check valve 130 ... Air supply source 141, 142 ... Silencer 151 ... Carry-in device 152 ... Carry-out device 153 ... Dust collector 150 ... Control device A, B ... Output port IN ... Input port R1, R2 ... Exhaust port W ... Work material

When the valve bodies 112 and 122 are switched to the neutral position, high-pressure air from the air supply source 130 is supplied to the direction switching valves 110 and 120 and the check valves 113b, 114b, 123b, and 124b of the supply / discharge passages 113, 114, 123, and 124. To the head side cylinder chambers 46c and 46d and the rod side cylinder chambers 46d and 55d. Here, the rod-side cylinder chambers 46d and 55d are smaller in pressure receiving area by the diameter of the rod than the pressure receiving areas of the head-side cylinder chambers 46c and 55c. As a result, the rods 46a and 55a move forward slowly.

Claims (4)

A wood processing apparatus comprising a mechanism for transporting wood along a ruler surface when feeding material to a processing machine, comprising the following configuration.
(1) Upstream and downstream of the processed material so as to form a straight conveyance path between an input conveyor for supplying unprocessed wood to the processing machine and a takeout conveyor for extracting processed wood from the processing machine. It is installed in.
(2) The input conveyor and the extraction conveyor are provided with a ruler perpendicular to the table surface on which the wood is placed so that the ruler surface is flush with both conveyors.
(3) An upstream pressing device is provided on the upstream side of the processing machine to press the wood from at least one of the upper side and the lateral direction when processing the wood by the processing machine.
(4) The upstream holding device is configured as a device that performs a pressing / retracting operation by a pressing member using a single rod type fluid pressure cylinder.
(5) The fluid pressure cylinder includes a forward mode in which the head side cylinder chamber is supplied and the rod side cylinder chamber is discharged; a reverse mode in which the head side cylinder chamber is discharged and the rod side cylinder chamber is supplied; The operation is controlled by a fluid circuit that controls supply and discharge of fluid pressure by a directional switching valve that can be switched to three modes of neutral mode.
(6) A fluid pressure supply / discharge control commanding device for commanding the neutral mode at the time of feeding and the forward mode at the time of processing when wood is present in the pressing range with respect to the upstream pressing device. The wood processing apparatus according to claim 1, further comprising the following configuration.
(7) A downstream pressing device is provided on the downstream side of the processing machine to press the wood from at least one of the upper side and the lateral direction when the wood is processed by the processing machine.
(8) The downstream holding device is configured as a device that performs a pressing / retreating operation by a pressing member by a single rod type fluid pressure cylinder, and the fluid pressure cylinder supplies the head side cylinder chamber to the rod side. A directional control valve that can be switched between three modes: forward mode with cylinder chamber discharge, reverse mode with head side cylinder chamber discharge and rod side cylinder chamber supply, and neutral mode with both cylinder chambers supplied. The fluid pressure supply / discharge control command device is configured to be controlled by a fluid circuit that performs fluid pressure supply / discharge control, and the fluid pressure supply / discharge control command device is connected to the fluid pressure direction switching valve of the downstream pressure device. When wood is present in the pressing range, the neutral mode is commanded during feeding and the forward mode is commanded during processing. The wood processing apparatus according to claim 1 or 2, further comprising the following configuration.
(9) The carry conveyor side is provided with a carry that moves while being controlled in position along the ruler of the feed conveyor in a state where a push bar is brought into contact with the rear end of the wood.
(10) A tip detection sensor for detecting the tip of the wood is provided on the upstream side of the processing machine, and after the tip of the wood is detected by the tip detection sensor, the carry is advanced by a predetermined distance and the wood is pushed by the upstream holding device. A fluid pressure supply / discharge control commanding device for commanding the neutral mode when moved to a position where pressing is possible. The wood processing apparatus according to claim 3, further comprising the following configuration.
(11) The upstream holding device is connected to the rod of the fluid pressure cylinder so as to exert a pressing force on the wood by rotating the pressing member about the upstream end as a rotation center. thing.