JP2003159394A - Nail support form testing device of nail hitting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nail support form testing device which improves the sensing accuracy of normalcy and abnormality of a nail support form. <P>SOLUTION: A part targeted for inspection 5 in the back of a gating center 4 of a movable arm 3 is detected by sensors 6, 7. The sensors 6, 7 fixed on a nail hitting machine as a holding part for a nail holder 2 detect the part targeted for inspection 5 which is at the support side and the other side in the back, and keeps long distance when opening and closing. Normalcy and abnormality of a support form of the nail 11 are detected accurately. The sensing accuracy of normalcy and abnormality of a nail support form can be improved. Since the sensors 6, 7 are fixed on the nail hitting machine as a holding part for the nail holder 2, the sensors 6, 7 don't receive an impact by movement and stop of the nail holder 2 and have a long durable life. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inspecting a form in which a nail holder of a nail driver supports a nail.

[0002]

2. Description of the Related Art FIG. 4 shows a nail support form inspection device 31 disclosed in Japanese Patent Application No. 8-263241, in which a sensor 34 is provided on a fixed arm 33 of a nail holder 32, and the fixed arm 33 and the nail holder 32 are fixed. When the movable arm 35 supports the nail 11 by sandwiching it, the sensor 34 causes the movable arm 3 to move.
A distance up to 5 is detected, and if the detected distance is a normal value, it is determined that the nail support form is normal, and if the detected distance is not a normal value, it is determined that the nail support form is abnormal. Is.

[0003]

However, in the above-described conventional example, the sensor 34 is arranged so that the nail 11 is positioned more than the opening / closing center 36 of the movable arm 35.
Since the structure is located in the direction of the part that supports
There is a slight difference in the detected distance between the case where the support form of the nail 11 is normal and the case where it is abnormal, and it is difficult to accurately determine whether the support form of the nail 11 is normal or abnormal. was there.

Therefore, the present invention provides a nail support form inspection device for a nailing machine which can improve the accuracy of detecting whether the nail support form is normal or abnormal.

[0005]

According to the present invention, a movable arm is moved between a supply position for a nail supply mechanism and a nailing position for a game board mounted on a table, and the movable arm is movable between the supply position and the nailing position. By providing a means to detect the position behind the opening / closing center, it is possible to accurately detect whether the nail support form is normal or abnormal, and improve the detection accuracy of normal / abnormal nail support form. You can
Further, in the present invention, the means for detecting on the rear side with respect to the opening / closing center of the movable arm is provided with respect to the inspection target portion provided on the rear side of the opening / closing center of the movable arm and the nail holder including the movable arm. If multiple sensors attached to the part of the nailing machine that becomes the fixed part are provided, the sensor will not be impacted by the movement stop of the nail holder, so compared to the case where the sensor is provided in the nail holder, The service life of the sensor can be extended.

[0006]

1 and 2 show a first embodiment, FIG. 1 shows a nail support form inspection device 1, and FIG. 2 shows a side surface of a nailing machine 15.

The nailing machine 15 will be described with reference to FIG. The nailing machine 15 attaches a table 17 to the lower part 16 of the main body of the device.
The Y drive mechanism 18 is provided so as to be movable in the front, rear, left and right directions in one plane, and the nail holder 2 and the hammer 20 and the nail supply mechanism 21 such as a parts feeder are provided on the upper portion 19 of the apparatus main body. The nail holder 2 is moved up and down by a drive mechanism (not shown) provided on the upper part 19 of the apparatus main body to a supply position indicated by a solid line with respect to the nail supply mechanism 21 and a nail striking position indicated with a virtual line with respect to the game board 12 mounted on the table 17. In addition, the movable arm 3 in FIG. 1 is opened and closed at the supply position and the nailing position. The hammer 20 is linearly moved up and down by a drive mechanism (not shown) provided on the upper portion 19 of the apparatus body. Then, in a state where the control device 9 is activated, the design board surface, which is the front surface of the game board 12, is directed upward, and the position determination holes 22 formed in the game board 12 are provided on the table 17 and the position determination pin is provided. Two
By being fitted in 3, the game board 12 is positioned and mounted on the table 17.

In that state, when the signal that detects that the game board 12 is mounted on the table 17 or the ON signal by the manual switch and the model signal of the game board 12 are input to the control device 9, the control device 9 is mainly operated. The XY drive mechanism 1 according to the processing data corresponding to the program stored in the computer of the control device 9 and the model signal of the game board 12.
8. Control the drive mechanism of the nail holder 2 and the drive mechanism of the hammer 20. By this control, after the table 17 moves and the position where the nail 11 of the game board 12 is to be driven stops just below the hammer 20, the nail holder 2 that receives and supports the nail 11 from the nail supply mechanism 21 at the supply position nails it. The movable arm 3 of the nail holder 2 is moved to the striking position and stopped, the hammer 20 is machined and the nail 11 supported by the nail holder 2 is driven into the game board 12 and then lifted and stopped at the standby position. Is opened and the nail holder 2 is moved from the nailing position to the supplying position and stopped, and then the nail holder 2 is closed to receive the nail 11 when the nail 11 is supplied from the nail supplying mechanism 21. A series of operations including the movement of the table 17, the movement of the nail holder 2, and the movement of the hammer 20 are performed on the nail 11 to be driven into the game board 12, whereby a large number of game nails or obstacle nails are called. 11 is driven into the game board 12, and the head side portion of the nail 11 that has been driven in is the game board 12
Has a predetermined height and inclination angle from the design board surface.

A nail support form inspection device 1 will be described with reference to FIG. The nail support shape inspection device 1 is a light reflection type that detects the movement of the inspection target portion 5 behind the opening / closing center 4 of the movable arm 3 at the supply position of the nail holder 2 shown by the solid line and the nailing position shown by the imaginary line. The sensors 6 and 7 of FIG. The sensors 6 and 7 are fixed parts with respect to the nail holder 2.
It is attached to the part 8 of the nail driver 15 of. Then, when the nail holder 2 will support the nail 11 supplied from the nail supply mechanism 21 at the supply position as shown by the solid line, the sensor 6 detects the position of the inspection target portion 5 and outputs a detection signal to the control device. Output to 9. The sensor 7 detects the position of the inspection target portion 5 and outputs a detection signal to the control device 9 in a period from when the nail holder 2 reaches the nail striking position as shown by an imaginary line until the nail 11 is driven.

Since the sensors 6 and 7 are light-reflecting type, if the movable arm 3 and the fixed arm 10 accurately support the nail 11, the sensors 6 and 7 can detect the reflected light from the inspection object portion 5. If the amount of received light is a normal value and conversely the movable arm 3 and the fixed arm 10 support the nail 11 by tilting it or do not support it at all, the sensors 6; The received light amount of the reflected light becomes an abnormal value. Therefore, if the detection signal corresponding to the amount of light received from the sensor 6 is within the range of the determination reference value stored in the control device 9, the control device 9 determines that the nail support form of the nail holder 2 at the supply position is normal. However, if the detection signal is out of the range of the determination reference value, it is determined that the nail support form of the nail holder 2 at the supply position is abnormal. Further, if the detection signal corresponding to the amount of light received from the sensor 7 is within the range of the determination reference value stored in the control device 9, the control device 9 determines that the nail support form of the nail holder 2 at the nail driving position is normal. If it is determined that the detected signal is out of the range of the determination reference value, it is determined that the nail support form of the nail holder 2 at the nail driving position is abnormal.

In the nailing machine 15 for driving a large number of nails 11 called game nails or obstacle nails on the game board 12, the movement amount of the side actuated by the drive mechanism of the movable arm 3 is increased to increase the game board. Make sure that the tips of the movable arms 3 (the portions that support the nails 11) that open and close in the portions of the continuous nails that are continuous at intervals such that the nails 11 that are nailed to 12 stick to each other do not interfere with the nails 11 that have already been hammered in. Therefore, the opening / closing distance of the tip of the movable arm 3 is as small as the diameter of the straight rod-shaped portion which is the body of the nail 11.

Therefore, according to the structure of the present embodiment, the sensor 6; 7 detects the inspection target portion 5 behind the opening / closing center 4 of the movable arm 3, so that the fixed portion is fixed to the nail holder 2. Since the sensors 6 and 7 attached to the portion of the nail driving machine 15 that detects the inspection target portion 5 having a large movement amount at the time of opening and closing the rear side opposite to the side supporting the nail 11, It is possible to accurately detect whether the nail 11 is supported normally or abnormally, and it is possible to improve the accuracy of detecting whether the nail 11 is supported or not normally. Further, since the sensors 6; 7 are attached to the portion of the nailing machine 15 which is a fixed portion with respect to the nail holder 2, there is no impact due to the movement / stop of the nail holder 2, and the sensor 6;
7 has a longer useful life.

FIG. 3 shows a second embodiment. In the first embodiment, the movable arm 3 is provided with a reflector or the movable arm 3 is used as a reflector, but in the second embodiment, the movable arm 3 is provided with a sensor 25 ( (Corresponding to the sensors 6 and 7) and the reflection plate 26 is provided in the portion 8 of the apparatus body 1, the opening / closing center 4 and the reflection plate 2
6, the distance between the movable arm 3 and the movable arm 3 becomes larger, and the subtle difference in the position of the movable arm 3 can be detected more appropriately, and the inspection accuracy increases.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a nail support form inspection device according to a first embodiment.

FIG. 2 is a side view showing the nailing machine of the first embodiment.

FIG. 3 is a schematic diagram showing a nail support form inspection device according to a second embodiment.

FIG. 4 is a schematic diagram showing a conventional nail support form inspection device.

[Explanation of symbols]

3 movable arm 4 open / close center 5 Inspection target 6; 7; 25 sensor 12 game board 17 table 21 Nail supply mechanism

Claims (2)

[Claims] 1. A means for moving to a supply position for a nail supply mechanism and a nailing position for a game board mounted on a table, and for detecting the supply position and the nailing position behind the opening / closing center of the movable arm. An apparatus for inspecting a nail support form of a nailing machine, which is characterized by being provided. 2. The means for detecting on the rear side of the opening / closing center of the movable arm serves as an inspection target portion provided on the rear side of the opening / closing center of the movable arm and a fixed portion for the nail holder including the movable arm. The nail support form inspection device for a nailing machine according to claim 1, further comprising a plurality of sensors attached to a portion of the nailing machine.