JPH0574802U - Auxiliary table roller braking mechanism for woodworking machines - Google Patents

Abstract

(57) [Summary] [Purpose] To stop the workpiece discharged with a large inertia force safely and appropriately on the auxiliary table. [Structure] A braking piece 18 that engages with the outer circumference of a roller 13 on an auxiliary table 12 connected to the front and rear of the table 3 is attached to a rod 17, and a slight gap is provided between the outer circumference of the roller 13 and the braking piece 18 by a tension spring 20. When the workpiece 14 is kept in the holding state and sent to the auxiliary table 12 after the predetermined cutting, the end of the workpiece in the feeding direction is detected by the detector 15,
16, the solenoid 21 serving as an electric member is driven for a preset time through the timers 26 and 27, the rod 17 is pulled through through the spring 22, and the braking piece 18 is pressed against the outer circumference of the roller 13. The free rotation of the roller 13 was restricted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a roller braking mechanism on an auxiliary table in a work board for woodworking.

[0002]

[Prior Art]

 In a conventional woodworking machine such as a super-finishing plane, the work material is sandwiched between a material feeding roller or an endless belt and a material feeding table, and is fed at a speed of 50 to 80 m / min while a blade or the like is being applied. Cutting was performed a predetermined number of times with a tool, and the cut workpiece was sent to an auxiliary table composed of multiple rollers provided in front of and behind the feeding table of the woodworking machine.

[0003]

[Problems to be solved by the device]

 In the conventional woodworking machine, the work material that has been cut is delivered at the above speed, so it has a large inertial force and moves on the auxiliary table. There is a limit to the length of the auxiliary table, and a worker who is waiting on the side of delivering the work must lightly press the delivered work by hand. If the workpiece to be delivered is not pressed by hand, long workpieces may overshoot the auxiliary table due to inertial force and sometimes fall onto the floor. In addition, when a woodworking machine is installed in the processing line, the processed material that has been cut is often sent to the side opposite to the worker, so that problems do not occur in the next process. It was requested to stop the timber safely and properly on the auxiliary table. It is an object of the present invention to safely and properly stop a work piece delivered with a large inertial force on an auxiliary table.

[0004]

[Means for Solving the Problems]

 The above-mentioned object is achieved by detecting the feed of the work material by a detector for detecting the presence or absence of the work material being fed, and braking the rotation of the roller on the auxiliary table.

[0005]

[Action]

 The wood working board configured as described above detects the feed of the cut work material, and after a preset time, moves the braking piece that engages with the outer circumference of the roller forming the auxiliary table to move the roller. The roller is braked by pressing it against.

[0006]

【Example】

An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a wood processing board of the present invention, FIG. 2 is a front view showing the structure of an auxiliary roller, and FIG. 3 is a circuit diagram. In the figure, a table 3 having a machining tool such as a plane blade 2 is arranged on a base 1, supported by a collum 4, and a head 5 is arranged facing the machining tool. The head 5 has a screw shaft 7 by a reversible electric motor 6 and has a structure that can be appropriately moved up and down. Further, the head 5 incorporates a material feeding belt 11 stretched between a driving roller 9 driven by a reversible electric motor 8 and a driven roller 10. The auxiliary table 12 is connected to the front (right side in FIG. 1) and the rear (left side in FIG. 1) of the table 3. As shown in FIG. 2, a plurality of rollers 13 are attached to the auxiliary table 12. The roller 13 is provided to reduce sliding resistance and facilitate movement when the work material 14 is fed into or fed from the main body. A braking piece 18 is attached to the rod 17 on the auxiliary table 12 so as to engage with the outer periphery of the roller 13, and the guide roller 19 can be moved left and right in the figure. The left end of the rod 17 is pulled to the left by a tension spring 20. In this state, the braking piece 18 has a slight gap from the roller 13. The right end of the rod 17 is connected to a solenoid 21, which serves as an electric member, via a spring 22. Therefore, when the solenoid 21 is biased, the rod 17 moves to the right as shown by the arrow B, the braking plate 18 contacts the outer periphery of the roller 13, and the roller 13 can be braked. When the solenoid 21 is deenergized, the braking piece 18 is separated from the outer circumference of the roller 13 and the roller 13 can freely rotate. Next, the operation will be described with reference to the circuit diagram shown in FIG. In FIG. 3, the presence or absence of the work material 14 is detected, and when the work material 14 is present, the output signals of the detectors 15 and 16 having an output logic “1”, the number of times the work material 14 is cut, and the wood material The counter 24 receives a signal from the cutting condition indicator 23 that indicates the sending direction, and counts it with the counter 24. The final process of cutting is sensed and a signal of logic "1" is output. When the timer 26 becomes operable upon receiving this logic "1" signal and the output of the OR gate 25 is inverted from the logic "1" to the logic "0" from the output signals of the detectors 15 and 16 through the OR gate 25, A pulse of logic "1" is output for a preset time T ₁ . If this time T ₁ is the workpiece 14 is sent to the rear as shown in FIG. 2, time T ₁ of the This is Okugyo toward the far end of the workpiece 14 as indicated by arrow A passes through the detector 16 A certain time is set from the start of moving to the auxiliary table 12. After the time T _{1 has} elapsed, the timer 27 shown in FIG. 3 outputs a pulse of logic “1” for a preset time T ₂ to excite the solenoid 21 and cause the rod 17 to move the rod 17 via the spring 22 to the arrow B in FIG. Pull in the direction indicated by. As a result, the braking piece 18 is pressed against the outer circumference of the roller 13, the braking is applied to the roller 13, and the workpiece 14 is stopped on the auxiliary table 12. This time T ₂ may be set to a time required to eliminate the inertial force of the work material 14. In FIG. 2, the auxiliary table 12 at the rear of the table 3 is described as an example, but the auxiliary table 12 at the front of the table 3 has the same structure. However, when the feeding direction of the material to be processed 14 is limited to one direction such as the rear or the front, the auxiliary table may be connected to only one of them. In the above description, the output signals of the detectors 15 and 16 on the table 3 of the woodworking board were used. However, the presence or absence of the processed material 14 at the tip of the auxiliary table 12 connected to the table 3. It is also possible to provide a detector for detecting the above. In such a case, the same effect can be obtained by deleting the time T ₁ described above or making it as small as possible.

[0007]

[Effect of the device]

 According to the present invention, when the work material that has been cut by the woodworking machine is discharged onto the auxiliary table, the discharge is detected and the roller is braked for a certain period of time, so a large inertial force is applied. The workpiece to be discharged can be stopped safely and at an appropriate position on the auxiliary table.

[Brief description of drawings]

1 is a front view of an auxiliary table attached to a woodworking board of the present invention.

FIG. 2 is a front view showing a configuration of an auxiliary table.

FIG. 3 is a circuit diagram of the present invention.

[Explanation of symbols]

12 is an auxiliary table, 13 is a roller, 14 is a workpiece,
15 and 16 are detectors, 17 is a rod, 18 is a braking piece, 1
9 is a guide roller, 20 is a tension spring, 21 is a solenoid,
22 is a spring, 23 is a cutting condition indicator, 24 is a counter,
Reference numeral 25 is an OR gate, and 26 and 27 are timers.

Claims (1)

[Scope of utility model registration request] 1. A material feeding device comprising a material feeding roller driven by an electric motor, an endless belt and the like, and a material feeding table facing the material feeding device to form a material feeding path, and a material is processed at an appropriate position of the material feeding path. Having a detector that senses the end of the material in the feed direction, the material to be processed is fed in one direction while receiving a signal from the detector, or reciprocated a predetermined number of times, and is cut by a tool such as a plane blade. After that, in a woodworking processing board equipped with an auxiliary table with a roller for sending out a workpiece in a preset direction, a braking member for restricting free rotation of the roller of the auxiliary table is provided in the vicinity of the roller. In addition, an electric member for urging the braking member is provided, and the detector detects the end of the workpiece to be fed in the traveling direction after the end of cutting, and after a preset time, drives the electric member.
An auxiliary table roller braking mechanism for a woodworking processing board, characterized by braking the rollers of the auxiliary table.