JPS6015441B2 - Woodworking processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a woodworking processing machine, and particularly includes a workpiece material feed regulation mechanism suitable for preventing overfeeding of the workpiece material when detecting the thickness of the workpiece material. This invention relates to a woodworking processing machine.

In conventional wood processing machines, when detecting the thickness of a workpiece material, there is a possibility that the thickness detection is performed in a state where the workpiece material is over-feeded.

Therefore, the leading edge of the workpiece material may be crushed and deformed by the material feeding table and the member holding the processing tool above, or the workpiece material may be pushed toward the processing tool side by the material feeding department before plate thickness detection is completed. There was a risk of being sent there.
The present invention has been made in view of the above, and its purpose is to provide a woodworking processing machine that can prevent over-feeding of the workpiece material when detecting the thickness of the workpiece material. be.

A feature of the present invention is that a workpiece material feeding regulating mechanism is provided inside the lower side of the plate thickness detection means of the workpiece material feeding portion of the material feeding table and has a stopper that can be made to protrude from the upper surface of the upper wheeled material table. The upper surface of the upper wheeled material table is rotated using a signal that causes the reversible electric motor for lifting and lowering the member having the processing tool, which is provided with this stopper facing above the upper wheeled material table, to rotate in the direction of lowering the part. The point is that it has a structure that makes it stand out more.

The present invention will be explained in detail below using the embodiments shown in FIGS. 1 to 6.

FIG. 1 is a side view showing an embodiment of the woodworking processing board of the present invention, and FIG. 2 is a detailed view of section A in FIG. 1, which shows the case of a super-finished keyboard.

In FIG. 1, a lifting member 3 is provided above and facing a material feeding table 2 supported by a support member 1, and a material feeding path is formed therebetween. A knife stock 5 having a drilled edge 4 is rotatably supported at the center of the lifting member 3, and a knife stock 5 having a drilled edge 4 is rotatably supported at the center of the lifting member 3. A knife stock 5 having a drilled edge 4 is rotatably supported, and a knife stock 5 having a drilled edge 4 is rotatably supported at a portion of the material feeding table 2 facing the lifting member 3. A material conveying belt 6 that is rotationally driven is provided. The lifting member 3 is supported by the support member 1 through a plurality of columns 7 so as to be able to rise and fall, and is raised and lowered by driving a reversible electric motor 8 for lifting and rotating a screw shaft 9, thereby changing the interval between the material feeding paths. (height) can be set appropriately. 10 is a plate thickness detection roller provided on the elevating member 3; 11 is a detector that operates in response to the movement of the plate thickness detection roller 10; and 12 and 13 are a rise switch and a fall switch, respectively.

By the way, in the present invention, the workpiece material feeding regulating mechanism 14 having a stopper that can protrude from the upper surface of the material feeding table 2 is provided inside the bottom of the plate thickness detection roller 10 of the material feeding table 2. FIG. 2 is a detailed structural explanatory diagram of part A in FIG. 1, that is, the workpiece feed regulating mechanism.
In FIG. 2, reference numeral 15 denotes a support member attached to the material feeding table 2. An arm 16 is rotatably supported by this support member 15, and a stopper 17 movable in the vertical direction is attached to one end of the arm 16. is engaged, and the stopper 17
A tension coil spring 18 is connected between the lower end of the support section 15 and the support section 15.
The stopper 7 is configured such that its upper end protrudes from the upper surface of the material feeding table 2 when the arm 16 rotates clockwise. A movable iron piece 20 that is attracted by the excitation of a solenoid coil 19 is engaged with the end of the arm 16 .

Therefore, when the solenoid coil 19 is energized, the movable iron piece 20 is attracted, so that the arm 16 is energized by the coil spring 1.
The stopper 17 rotates clockwise against the tensile force of 8.
The upper end protrudes from the upper surface of the material feeding table 2. Therefore, as shown in FIG. 3, when the material to be processed 21 is fed through the feeding port of the material feeding table 2, the material to be processed 21 hits the stopper 17, and is prevented from being fed any further. Then, in the state shown in FIG. 3, the elevating member 3 is lowered, and the thickness of the workpiece material 21 can be detected by the thickness detection roller 10 and the detector 11. FIG. 4 is a block diagram showing an embodiment of a drive control circuit for the reversible motor 8 of FIG. 1 and the solenoid coil 19 of FIG. 2.

In FIG. 4, while the lift switch 12 is on, the relay coil 30 is energized and its normally open contact 32 is energized.
is closed, the reversible lifting motor 8 rotates forward, and the lifting member 3
rises. When the workpiece material 21 can be fed into the material feeding path, the ascending switch 12 is turned off and the descending switch 13 is turned on.
Since the signal given from the differential circuit 22 and the signal from the wood extraction signal generation circuit 23 are both at low level, the output of the OR gate 24 becomes low level, and
Since the signal applied from the detector 11 via the differentiating circuit 25 is also at low level, the 0 side output of the set/reset circuit 26 is at the /- level, and the output of the AND gate 27 is at the high level. For this reason, the relay coil 31
is energized, its normally open relay contact 34 is closed,
The reversible electric motor 8 rotates in the reverse direction, and the elevating member 3 descends. The falling switch 13, the AND gate 27, and the differentiating circuit 28 constitute a falling signal generating means. On the other hand, in the present invention, the output of the AND gate 27 is passed through the differentiating circuit 28 to the differentiating circuit 28.
Since the output of the AND gate 27 is input to the set/reset circuit 29 to which the output of the AND gate 27 is inverted from low level to /.
is detected, a pulse signal is output from the differentiating circuit 28,
The set/reset circuit 29 is set, and the first output of the set/reset circuit 29 is inverted from low level to low level, and in response to the high level signal, the solenoid coil 19 is excited.

As a result, as described above, the movable iron piece 18 is attracted,
A stopper 17 protrudes from the upper surface of the sending village table 2. Therefore, when the material to be processed 21 is fed, the tip of the material comes into contact with the stopper 17, and it is possible to prevent the material from being excessively fed into the interior. Thereafter, the elevating member 3 continues to descend, and the plate thickness detection roller 10 detects the workpiece material 21.
When the roller 10 comes into contact with the upper surface of the roller 10 and is pushed up, the detector 11 is turned on and outputs a high level signal.

The rise of this high level signal is detected by the differentiating circuit 25, which outputs a pulse signal, sets the set/reset circuit 26, and resets the set/reset circuit 29 at the same time. As a result, the outputs of the respective set and reset circuits 26y and 29 become low level,
The excitation of the relay coil 31 and the solenoid coil 19 is stopped, and the normally connected relay contact 33 is connected to the reversible motor 8.
stops, the lowering of the elevating member stops, and the stopper 17 is retracted from the upper surface of the material feeding table 2, and the workpiece material 21
It becomes possible to feed the inside further. Note that even if the lowering switch 13 is turned on after one plate thickness detection is completed,
Before that, turn on the lifting switch 12, or the wood pull-out signal generation circuit 23 notifies the end of processing of the workpiece material 21.
Unless , the elevating member 3 does not descend and the stopper 17 does not protrude from the upper surface of the sender table 2.
According to the embodiment of the present invention described above, the wood feeding regulating mechanism 14 having the stopper 17 that can move vertically inward from the bottom of the plate thickness detection roller 10 on the entrance/exit side of the workpiece material 21 of the material feeding table 2 is provided. Since the stopper 17 is made to protrude from the upper surface of the sending village table 2 by using a signal that reversely rotates the reversible electric motor 8 for lifting and lowering so as to lower the lifting member 3, the overload of the workpiece material 21 is prevented when detecting the plate thickness. This can prevent the material to be processed 21 from coming into contact with the material feeding belt 9, the tip of the material to be processed 21 being crushed and deformed by the material feeding table 2 and the lifting section 3, and the main body being The plate thickness can be detected safely without deformation.

FIGS. 5 and 6 are views corresponding to FIGS. 2 and 4 showing other embodiments of the present invention, respectively, and the same parts are indicated using the same reference numerals.

In FIG. 5, an elastic member 34 for detecting the feeding of the material 21 protruding upward from the upper surface outside the stopper 17 of the material feeding table 2 for detecting the feeding of the material 21 to be processed, and
A feeding detector 35 is provided to detect the displacement of the elastic portion 34 due to feeding. And as shown in Figure 6,
A high level signal when the output of the AND gate 36 switches from a low level to a level when the AND condition of the output signal of the feed detector 35 and the high level signal of the 0 side output of the set/reset circuit 26 is satisfied. The rising edge of is detected by the differentiating circuit 28, and the set/reset circuit 29 is set by the pulse signal from the differentiating circuit 28,
9 is energized to cause the stopper 7 to protrude from the upper surface of the sending village table 2. The feed detector 35, the AND gate 36, and the differential circuit 28 constitute a falling signal generating means. Note that the stopper 7 can be retracted below the upper surface of the material feeding table 2 when the plate thickness detection is completed, as in the case of FIG. 4. Even if this is done, the effect is the same. As explained above, according to the present invention, it is possible to prevent overfeeding of the workpiece material when detecting the thickness of the workpiece material, and prevent the workpiece material from being fed or crushed and deformed. This has the effect that the plate thickness can be detected safely without having to do anything.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the woodworking processing machine of the present invention, Fig. 2 is a detailed view of section A in Fig. 1, and Fig. 3 is a board thickness detection of the wood feed regulation mechanism shown in Fig. 2. FIG. 4 is a block diagram showing an embodiment of the drive control circuit for the reversible motor in FIG. 1 and the solenoid coil in FIG. 2, and FIGS. FIG. 4 is a diagram corresponding to FIG. 2 and FIG. 4 showing an example. 2... Material feeding table, 3... Lifting member, 4... Key blade, 5... Knife stock, 6...
Sending belt, 8... Reversible electric motor for lifting, 10.
...Plate thickness detection roller, 11...Detector,
12... Ascending switch, 13... Descending switch, 14... Work material feed regulation mechanism,
15...Support member, 16...Arm, 17
... Stopper, 18 ... Coil spring, 19 ... Solenoid coil, 20 ... Movable iron piece, 21 ... Workpiece material, 23 ... Pull-out signal generation circuit, 24 ...
...OR gate, 26,29...Set reset circuit, 27...AND gate. Many drawings Younger brother Z drawing Inferior 3 drawing Younger brother Ta drawing Multi drawing 5 drawing Spear 4 drawing

Claims (1)

[Claims] 1. A member having a processing tool is placed facing above a material feeding table on which a workpiece material is placed, and a material feeding path is formed therebetween, and the spacing between the material feeding paths can be adjusted by raising and lowering said member using a reversible lifting motor. None, in a woodworking machine in which a plate thickness detection means is provided on the member above the workpiece material feeding section at the entrance of the material feeding path, the material is fed from below the plate thickness detection means onto the material feeding table inside the main body. A material feeding regulating mechanism having a stopper protruding above the material table is provided, and a descending signal generating means generates a descending signal for a reversible motor when the member descends, and a plate thickness detection signal is set by the descending signal. and a reset means reset by the
A woodworking processing machine characterized by comprising a control means for causing the stopper to protrude from the upper surface of the material feeding table.