JPS5854963Y2 - Super finishing planer for woodworking - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a super finishing planer for woodworking in which the feeding direction of material feeding devices such as material feeding belts and material feeding rollers can be changed.

Conventionally, this type of super-finishing planer for woodworking was produced in the 1970s.
As shown in Japanese Patent No. 7-9755, there was a device in which the feeding direction of the material feeding device was switched using a reversible motor.

However, in this type of super finishing planer for woodworking, especially when the material feeding device is frequently switched between forward and reverse directions, a very large overload is applied to the motor each time the switching is performed. The disadvantage is that the motor often needs to be stopped and rested, and cutting operations cannot be performed continuously for long periods of time.

The purpose of this invention is to use a motor that rotates in one direction, and to interpose a clutch mechanism between the motor and a material feeding device such as a material feeding belt or material feeding roller to switch the feeding direction of the material feeding device. As a result, the defects existing in the above-mentioned conventional technology are eliminated, and even if the material feeding device is frequently switched between forward and reverse directions, no load is applied to the motor, and therefore, no seizure occurs, and continuous operation can be achieved for a long period of time. Our objective is to provide a super-finish planing board for woodworking that can be used for woodworking.

The present invention is a creation of a technical idea that reasonably achieves the above purpose.

An example of a means embodying the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a material feeding table supported on the upper surface of the machine base 2 by a bundle 3 so as to be able to move up and down,
A knife stock 5 having a planer blade 4 is removably fitted into the center thereof.

Planer blade 4 feeds the material to be cut (right side in the figure)
The knife stock 5 is attached to the knife stock 5 so as to face in the direction opposite to the feeding side so that cutting is not performed in the forward process when the workpiece is transferred, but cutting is performed in the returning process when the workpiece returns to the feeding side.

Reference numeral 6 is a motor fixedly installed on the machine base 2, and 7 is a clutch mechanism that can switch the rotation of the motor 6 between forward and reverse directions for transmission.A belt 8 is hung between the motor 6 and the rotation can be manually switched. It is equipped with a switching lever 9 for use.

Reference numeral 10 denotes a reduction pulley pivotally supported on a support stand 11 on the rear upper surface of the machine base 2, and a belt 12 is hung between it and the clutch mechanism 7.

Reference numerals 13 and 14 denote a driving roller and a driven roller disposed above the material feeding table 1, and a material feeding belt 15 is hung between the rollers 13 and 14.

Reference numeral 16 denotes a pulley fixed on the same axis as the roller 13 at the rear of the drive roller 13, and a belt 18 is hung between the reduction pulley 10 and the pulley 17 fixed on the same axis to control the rotation of the motor 6. The signal can be transmitted to the drive roller 13.

Reference numeral 19 denotes a phototube switch as a detection member attached to the rear of the upper surface of the material feeding table 1 slightly to the right (in the drawing) of the center of the driven roller 14, and two timers (not shown) attached to the rear of the machine base 2. ), it senses the feed in and out of the material to be cut, and after a certain period of time from the sensing, the clutch mechanism 7 is activated to switch the direction of rotation of the material feeding belt 15.

In addition, 20 is an auxiliary roller for tensioning the material conveying belt 15, and 21
is a cover that covers the upper part of the material conveying belt 15.

Next, the functions and effects of the present invention will be explained.

To use the super finishing planer for woodworking of the present invention, first rotate the handle 3, adjust the vertical position of the material feeding table 1 according to the thickness of the material to be cut, and then start the motor 6. Then, the material conveying belt 15 is rotated clockwise (in the direction of the arrow P), and the material to be cut is inserted between the table 1 and the material conveying belt 15 from the right side of the upper surface of the table 1, across the front of the phototube switch 19. .

Then, the material to be cut is sent to the left by the material feeding belt 15 between the material feeding table 1 and the material feeding belt 15, and the right end (the rear end from the feeding direction) is connected to the phototube switch 19.
When the material has passed in front, the phototube switch 19 is activated and the output signal activates the clutch mechanism 7 to move the material conveying belt 1.
5 is temporarily stopped, but the rotation of the material conveying belt 15 is not stopped at the same time as the phototube switch 19 is activated, but is stopped after a certain period of time by the action of the first timer connected to the phototube switch 19. be exposed.

In other words, within this time, the entire material to be cut is transferred to the left from the planer blade 4 within a range that does not come off from between the material conveying belt 15 and the table 1, and is cut in the next rightward transfer process. Prepare for the future.

Note that when this material to be cut is transferred to the left, the planer blade 4 is attached to the knife stock 5 in a diagonal manner downward to the right, and the blade at the tip thereof faces left, so that the material is not cut. It never happens.

When the clutch mechanism 7 is disengaged and the rotational drive of the material conveying belt 15 is stopped, the second timer is immediately activated to maintain the off state for a sufficient period of time to stop the inertial rotation of the material conveying belt 15 in the normal rotation direction. Retained.

When the second timer times up, the clutch mechanism 7 is switched to the reverse direction, and the material conveying belt 15 begins to reverse in the direction of the arrow P.

Then, the material to be cut is transferred from the left to the right on the table 1, and during this time, the lower surface of the material is cut by the planer blade 4 and sent to the right side of the material feeding table 1. The pinched state between the table 1 and the table 1 is released.

Then, when the left end (the front end from the initial feeding direction) of the material to be cut passes in front of the phototube switch 19 to the right, the material feeding belt 15 changes from normal rotation in the direction of arrow P to reverse rotation in the direction of arrow P. Similarly to when switching to , the first timer operates and stops after a certain period of time, then the second timer operates and maintains this stopped state for a certain period of time, and then returns to normal rotation in the direction of the P arrow. .

The forward and reverse switching of the material conveying belt 15 is always performed via the clutch mechanism 7, and the motor 6 is always rotating in a fixed direction, so there is no overload on the motor 6 when switching This panel has the effect of being able to operate continuously for a long period of time.

In the present invention, after the detection member detects the rear end of the workpiece by the first timer, the rear end of the workpiece is detected by the planer blade 4 and the material feeding belt 1.
5. The driving time of the material conveying belt 15 is appropriately regulated so that the material can be stopped in the left end range so that it can be reversely fed.

In other words, after the detection member detects the rear end of the workpiece and the timer starts counting, the timer is set so that it times up at an appropriate time, taking into account the amount of time that the workpiece is transferred due to inertia. When the time is up, the clutch will be automatically switched from manual to disengage.

If this time-up occurs, that is, if the clutch is disengaged and the reverse mode is switched at the same time, an excessive load will be placed on the clutch and other power transmission systems due to the inertia of the workpiece and each moving part. Start counting and allow enough time for the material to be cut to stop moving due to inertia.
The clutch is automatically switched from disengaged to reverse as the second timer times up.

Therefore, the present invention has a great effect in that the motor 6 can be operated continuously in only one direction, and the clutch mechanism 7 can be operated in forward and reverse directions without applying an excessive load.

As detailed above, the present invention provides a knife stock with a planer blade in the center of the material feeding table, and also provides material feeding devices such as a material feeding belt and material feeding roller above the material feeding table. A clutch mechanism for switching the feeding direction of the material feeding device is interposed between the device and the motor for driving it, and the planer blade is used for cutting during the previous process of transferring the material from the feeding side. First, the knife stock is attached to the knife stock so as to face the opposite direction to the feeding side so that cutting is performed in the return process when the material to be cut returns to the feeding side. A detection member that detects the passage of the trailing edge, and an output signal from the detection member that indicates that, after a certain period of time, the trailing edge of the material to be cut passes through the planer blade between the material feeding device and the material feeding table. By providing a first timer that regulates the timing of stopping the clutch mechanism from normal rotation within a range in which the clutch mechanism does not disengage from normal rotation, and a second timer that maintains the open and stopped state that switches the clutch mechanism from stop to reverse rotation, the transmission speed can be improved. This invention is practically preferable as a super-finishing planer for woodworking, since an excessive load is not applied to the motor 6 when the lumber device is switched between forward and reverse directions, and it can be operated continuously for a long period of time.

[Brief explanation of the drawing]

The figure is a schematic front view of the super finishing planer for woodworking according to the present invention. Material feeding table...1, Machine base...2, Planer blade 4, Knife stock...5, Motor...
...6, Clutch mechanism...7, Drive roller...13, Followed roller...14, Material conveying belt...15°

Claims (1)

[Scope of utility model registration request] A knife stock with a planer blade is provided in the center of the material feeding table, and a material feeding device such as a material feeding belt and material feeding roller is provided above the material feeding table, and the material feeding device and a motor for driving it are provided. A clutch mechanism for switching the feeding direction of the material feeding device is interposed between the planer blade and the planer blade so that no cutting is performed in the forward process of transferring the material from the feeding side, and the material to be cut is transferred to the feeding side. A detection member is attached to the knife stock so as to face in the opposite direction to the feeding side so as to perform cutting in the return process, and on the side of the upper surface of the feeding table on the feeding side is a detection member for detecting passage of the rear end of the material to be cut in the feeding direction. Then, after a certain period of time, an output signal from the detection member causes the clutch mechanism to operate within a range where the rear end of the material to be cut does not separate from the space between the material feeding device and the material feeding table after passing through the planer blade. A super-finishing planer for woodworking, characterized in that it is provided with a first timer that regulates when to stop the clutch mechanism from normal rotation, and a second timer that maintains an open and stopped state that switches a clutch mechanism from stop to reverse rotation.