JPS6014681B2 - Anti-repulsion claw device for automatic reciprocating woodworking machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic reciprocating wood processing machine that prevents repulsion and prevents the workpiece from flying out during cutting, and does not cause any hindrance when the workpiece is fed back without cutting. This invention relates to an anti-repulsion claw device suitable for preventing the user from supporting the object.

Since automatic reciprocating woodworking machines do not have anti-repulsion claws, if the workpiece is cut in an unstable state, the workpiece may move in the opposite direction to the feed direction due to the cutting reaction force of the cutting tool. There have been cases where the robot has jumped out to the side, that is, to the worker's side, causing an accident in which the worker is injured.

The present invention has been made in view of the above, and its purpose is to prevent the processed material from flying out in the opposite direction to the feeding direction during cutting, and to prevent the processed material from flying out in the opposite direction to the material feeding direction during cutting. To provide a repulsion prevention pawl device for an automatic reciprocating woodworking machine that can prevent any hindrance during reverse feeding.

In the standby mode of the present invention, a repulsion prevention claw that prevents the processed material from flying out in the opposite direction to the feeding direction due to the cutting reaction force during cutting with a cutting tool is moved forward and backward by a reversible electric motor to prevent the processed material from flying out in the opposite direction to the material feeding direction. A feeding member for reciprocating the material and a cutting tool for the processed material are rotatably attached to the cutting material, and a push plate is attached to rotate the anti-repulsion claw in the opposite direction. A steady rest is rotatably attached to the above member to prevent the workpiece from being cut, and a signal is used to reverse the reversible motor when the workpiece is not being cut, and the surface of the workpiece is caused by its own weight during cutting. The anti-repulsion claw, which is rotated until its lower end comes into contact with the material, is rotated by the pusher, and means is provided for rotating the steady rest shaft so that the lower end of the claw moves away from the surface of the material to be processed. It is in.

The present invention will be explained in detail below using the embodiments shown in FIGS. 1 to 3.

FIG. 1 is a side view showing a schematic configuration of an automatic reciprocating woodworking keyboard equipped with anti-repulsion pawls according to the present invention, and FIG. 2 is a side view showing an embodiment of the anti-repulsion pawl device of FIG. 1. .

In FIG. 1, 1 is a drill bit, and 2 is a metal barrel having a drill bit 1. The key barrel 2 is rotatably supported by an elevating member 3, and a plurality of feeding materials are provided in front and behind the key barrel 2. A conveying member 4 made of an roller or a material conveying belt is rotatably supported by the elevating member 3. 5 is a reversible electric motor that rotationally drives the material feeding member 4.

Further, a feeding table 6 is arranged to face the elevating member 3, and the space between these serves as a material feeding path. The elevating member 3 is supported by a plurality of columns 7 to be movable up and down on the material feeding table 6, and can be raised and lowered by operating the elevating handle 8 and rotating the screw shaft 9. It is now possible to adjust the interval. The conical arm 2 and the material feeding section 4, which are rotatably supported by the elevating member 3, are rotationally driven by a fin motor and a reversible electric motor 5 (not shown), respectively, via a power transmission mechanism (not shown). By the way, in the present invention, a plurality of anti-repulsion claws 10 are provided at appropriate positions in front of the conical barrel 2.

As shown in FIG. 2, this anti-repulsion pawl 10 is rotatably supported by a support member 11 attached to the elevating section 3. In addition, the elevating member 3 is provided with the positioning of the anti-repulsion pawl 10, and when the workpiece 20 receives a cutting reaction force during cutting and is about to fly out in the opposite direction to the material feeding direction, the anti-repulsion pawl 10 is placed in the opposite direction ( A steady rest shaft 12 is rotatably provided to prevent rotation in the counterclockwise direction.
One end of a push plate 13 and a link 14 that push the anti-repulsion pawl 10 are fixed, and the other end of the link 14 is loosely engaged with a movable iron piece 16 that is displaced by the excitation of a solenoid 15. 1
7 is a spring whose one end is held by the elevating member 3 and the other end is connected to the link 14 to generate a force opposing the attractive force of the solenoid 15; 18 is a stopper for the link 14 when the solenoid 15 is not energized; This is the pin.

The anti-repulsion claw 10 is disposed so that its lower end 10a is located below the rotational outer circumferential surface of the hammer blade 1, that is, the cutting surface, when the anti-repulsion claw 10 hangs down due to its own weight. When operating the lifting handle 8 to raise and lower the lifting section 3 and appropriately setting the cutting amount of the workpiece 20 for forward cutting, "while keeping the lower surface of the workpiece 20 in close contact with the material feeding table 6, The processing material 20 is cut by rotation. At this time,
The anti-repulsion blade 10 rotates around the support village 11 as the center of rotation, and although the lower end 10a is in contact with the surface of the workpiece 20, it does not interfere with the outward feeding of the workpiece 20. When the rear part of the material 20 to be processed (the right end of the material 20 in FIG. 1) has passed the lower end of the anti-repulsion claw 10, the anti-repulsion claw 10 returns to its original position under its own weight, and the lower end of the anti-repulsion claw 10 is cut. It protrudes below the surface. Furthermore, the material to be processed 20 is fed, and before the rear end passes through the key body 2 and reaches the position of the rear material feeding section 4, the rotation of the material feeding member 4 is stopped, and the material to be processed 20 is fed. stop. Next, in the case of returning the material, the lower end 10a of the anti-repulsion claw 10 protrudes beyond the cutting surface, so if the workpiece 20 is sent in the returning direction in this state,
The right end of the processed material 20 hits the lower end of the anti-repulsion claw 10, making it impossible to feed the material. Therefore, in the present invention, the solenoid 15 is energized to attract the movable iron piece 16 and link The anti-repulsion pawl 10 is rotated by the push plate 13 and rotated clockwise to push it up.
The lower end 10a of the cutter is retracted above the cutting surface of the workpiece 20. Then, with the anti-repulsion claw 10 retracted, the material 20 to be processed is fed back and pulled out toward the front. A material position detector 19 is provided on the material feeding table 6 at the position shown in FIG.
9 is used to de-energize the solenoid 15, the spring 17 pulls up the link 14 until it contacts the pin 18, rotates the steady rest 12 counterclockwise, and sets the repulsion prevention pawl 10 in a free state. and prepare for the next cutting operation.

FIG. 3 is a block diagram showing an embodiment of a control circuit for controlling the rotational direction of the material feeding member 3 and the placement of the anti-repulsion pawl 10.

In FIG. 3, 21 receives the output signal of the material position detector 19, detects that the end point (right end) in the feeding direction of the processed material 20 has passed the position of the detector 19, and shortens the pulse width. , a termination sensing circuit that sends out an output, consisting of a differentiating circuit, etc. 22 is operated by the output signal of the termination sensing circuit 21;
This is a delay circuit that regulates the time from when the last end of the material 20 in the feeding direction passes through the detector 19 until it passes through the key body 2.

The detector 19, the termination sensing circuit 21, and the delay circuit 22 constitute a reversal signal generating means. 23 and 24 respectively use the 1 side output and 0 side output of the set-reset circuit 25 as feedback inputs, and also take the output signal of the delay circuit 22 as an input, and select whether to use it as a set input or a reset input of the set-reset circuit 25. It is an AND gate that determines and sends an output.

Reference numerals 26 and 27 designate AND gates having the 1 side output and 0 side output of the set/reset circuit 25 as inputs, and the output of the delay circuit 28 as inputs.

The output of the delay circuit 28 is normally in a low level state, and is activated by the falling signal of the delay circuit 22, and sends out a low level output for a certain period of time, causing the material feeding member 4 to rotate forward (clockwise in FIG. 1). The stop time is regulated when changing from reverse rotation (direction is normal rotation) or from reverse rotation to forward rotation. 29
1 is a delay time switching circuit, and 30 and 31 are relay coils that are excited by the output signals of AND gates 27 and 26, respectively, when they are at a high level.

Note that during the period when the delay circuit 28 is sending out a low level signal for a certain period of time, the outputs of the AND gates 26 and 27 are at a low level, so that neither of the relay coils 30 and 31 is excited. 32 is a power switch, and 33 and 34 are normal gate Is that close when the relay coils 30 and 31 are excited, respectively.
The J-ray contact opens and closes the circuit between the power source and the reversible motor 5 (see FIG. 1) when the power switch 32 is turned on, thereby controlling the rotation of the reversible motor 6 in all directions. 35 is a coil of the solenoid 15 of FIG. 2 according to the present invention, and the coil 3
5 is designed to be excited when the output of the AND gate 26 is at /.

Next, the operation in actual work will be explained.

First, as shown in FIG.
The material to be processed 201 is raised and lowered to give an arbitrary cut to the workpiece material 201, thereby making it possible to cut the material. Next, the power source switch 32 is operated to turn on the power to the circuit. When the power is turned on, the Jinsei Cave 2 is rotated by an electric motor and a transmission means (not shown), and the circuit shown in FIG. Since the output of the delay circuit 28 also becomes the /. level, the output of the AND gate 26 becomes a low level, the output of the AND gate 27 becomes a high level, and the relay coil 30
The normal IJ relay contact 33 is turned on, the reversible motor 5 rotates in the normal direction, and the material feeding member rotates in the normal direction. After the conical chest 2 and the material feeding member 4 rotate, the processed material 20 is pushed into the material feeding path and is automatically fed by the material feeding member 4. Since the solenoid 15 is not energized when the processed material 20 is sent out,
Although the anti-repulsion claw 10 is lowered due to its own weight, it rotates clockwise as the material 20 passes and the anti-repulsion claw 10 escapes, allowing the material to be fed without resistance. The material to be processed 20 is cut by the drill bit 1 while being fed by the feeding member 4, and when the end of the material to be processed 20 passes the position of the detector 19, the end sensing circuit 21 detects the passing of the end and sends out an output. , the delay circuit 22 is operated, and the delay time switching circuit 2 is activated.
After the time T set by 9, a pulse is generated, the set/reset circuit 25 is set via the AND gate 23, and its 1 side output and 0 side output states are inverted.

At the same time, the output of the delay circuit 28 is inverted to a low level, so the outputs of the AND gates 26 and 27 become low level, the relay coil 30 is de-energized, and the normally connected relay contact 33 is closed, reversing it. The electric motor 5 stops. Even if the reversible electric motor 5 stops, the workpiece 20 is further fed due to the drive system and the inertia of the workpiece 20, but the workpiece 20
The output of the delay circuit 28 is inverted to /. level before the terminal end passes through the material feeding section 4 on the rear side, the output of the AND gate 26 is set to high level, the relay coil 31 is energized, and the normal IJ The reversible electric motor 5 is reversed by closing and releasing the relay contact 34, and the material feeding member 4 is reversed to reversely feed the processed material 20. On the other hand, in the present invention, when the material to be processed 20 is being fed backwards, the coil 35 of the solenoid 15 is excited by the high level output of the AND gate 26 to attract the movable iron piece 16, and the steady rest shaft is 12 clockwise, and the push plate 13 rotates the anti-repulsion claw 10 clockwise around the support member 11, so that the lower end 10a of the anti-repulsion claw 10 touches the surface of the processed material 20 to be reverse-fed. I try not to come into contact with them. When the processing material 20 is fed backwards and the terminal end sensing circuit 21 senses that the terminal end (right side) has passed through the pupil of the detector 19 and sends out an output,
The delay circuit 22 receives the output, and the delay time switching circuit 2
After the time L (T2×T,) set by 9, the delay circuit 22 outputs a pulse. Therefore, since the 0-side output of the set-reset circuit 25 is at a low level, the output of the AND gate 23 is also at a low level, but the output signal of the delay circuit 22 is passed through the AND gate 24 to the reset input of the set-reset circuit 25. Then, reset the reset circuit 25 and set its 1st output to low level.
The 0-side output is inverted to the /.-y level, and the output signal of the delay circuit 28 is again set to the low level for a certain period of time. Therefore, the output of the AND gate 26 becomes low level,
The relay coil 31 is de-energized, the contact 34 is closed, the reversible motor 5 is stopped, and the rotation of the material feeding member 4 is also stopped. At the same time, the excitation of the coil 35 of the solenoid 15 is released, and the movable iron piece 16 returns to its original position due to the tension of the spring 17, and the steady rest shaft 12 rotates counterclockwise via the link 14, causing repulsion. The prevention claw 10 is rotated and lowered by its own weight. When the output of the delay circuit 28 is reversed to the /- level after a certain period of time, as described above, the contact 3
3 is activated, the reversible electric motor 5 rotates in the normal direction, and the material feeding member 4 rotates in the normal direction to prepare for the next operation. According to the embodiment of the present invention described above, since the anti-repulsion pawl 10 is provided, if the workpiece 20 receives a cutting reaction force during cutting of the workpiece 20 and tries to fly out in the opposite direction to the material feeding direction. Anti-repulsion claw 10
This can be prevented because the particles become combed and get stuck in the processed material 20.

Furthermore, when the material to be processed 20 is being fed back, the anti-repulsion claw 10 automatically moves away from the surface of the material to be processed 20, so the anti-repulsion claw 10 does not pose any hindrance when the material to be processed 20 is being fed back. d As explained above, according to the present invention, the repulsion prevention claw can prevent the workpiece from flying out in the opposite direction to the material feeding direction during cutting, and the repulsion prevention claw can prevent the workpiece from flying out in the opposite direction to the material feeding direction when the workpiece is being fed backwards. This has the effect of ensuring that it does not become a hindrance.

Brief Description of the Drawings Figures 1 to 3 show one embodiment of the present invention, and Figure 1 is a side view showing a schematic configuration of an automatic reciprocating drill for woodworking equipped with a repulsion prevention pawl device of the present invention. Figure, 2nd
1 is a side view of the anti-repulsion claw device shown in FIG. 1, and FIG. 3 is a block diagram of a control circuit for controlling the movement of the material feeding member and the anti-repulsion claw shown in FIG. 1.

1... Steel blade, 3... Lifting member, 4... Material feeding member, 5... Reversible electric motor, 6... Material feeding table, 10...・Repulsion prevention claw, 1 1... Support member, 12... Steady rest shaft, 13... Push plate, 14... Link, 15... Solenoid, 16 ......Movable iron piece, 17... Spring, 18... Pin, 19... Material position detector, 20... Processing material, 21... Termination sensing circuit, 22, 28...Delay circuit, 23, 24, 26, 2
7...AND gate, 25...Set reset circuit, 3
5...Solenoid coil. Multi-z diagram A' diagram A 3 diagram

Claims (1)

[Claims] 1. A material feeding member that is driven in forward and reverse directions by a reversible electric motor to reciprocate the material to be processed, a member to which a cutting tool for the material to be processed is attached, and a material feeding member provided opposite to the member across a material feeding path. In an automatic reciprocating woodworking processing machine consisting of a wood table, an anti-repulsion pawl is rotatably attached to the member, a steady rest shaft is rotatably provided on the member to prevent the anti-repulsion pawl from rotating in the opposite direction, and the anti-repulsion pawl is rotatably provided on the member. A push plate for rotating the anti-repulsion pawl is attached to the stop shaft, and a driving means for rotating the steady rest shaft to separate the anti-repulsion pawl whose lower end is in contact with the surface of the workpiece due to its own weight from the surface of the workpiece is swung. A reversing signal generating means is provided on the stop shaft and generates a reversing signal for the reversible motor when a material is being reversely fed, and a control circuit is activated by the reversing signal and rotates the steady rest shaft driving means to a predetermined position. An anti-repulsion claw device featuring: