JPH02192902A - Automatic nailing device - Google Patents

Abstract

PURPOSE:To improve safety by preventing reliably such a case where a nail is shot by missing the object, by a method wherein the nail is shot only when an actuating position detector and object detectors each detect respectively an actuating position of a york guide and the respective objects. CONSTITUTION:When a wooden box 11 of an object is positioned at a fixed position, the same is positioned at a nailing position by a robot 14 meeting at right angle with the same. Then a main body 16 is moved forward with a cylinder 17, a york guide 19 is pressed against the box 11 and shifted to an actuating position from a nonactuating position. In this instance, an actuating position detector 21 and object detectors 23, 24, 25 each are turned ON by detecting respectively an actuating position of a york guide 19 and the wooden box 11 and a shooting command signal is imparted. Then a nail is shot toward the wooden box 11 from a nail shooting part through a hole part 20 of the york guide 19, through which nailing is performed. On the one hand, when the actuating position detector 21 is not turned ON, since the york guide 19 is not pressed against the wooden box 11 or pressing is insufficient, shooting of the nail is not performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Statement of the Invention] (Field of Industrial Application) The present invention relates to an automatic nailing device for driving nails into objects such as wooden boxes.

(Prior Art) A conventional configuration of this type of automatic nailing device is shown in FIG. In the figure, reference numeral 1 denotes a main body having a nail firing section (not shown) inside, which is moved by a cylinder 2 in the front-rear direction (left-right direction in the figure).

Reference numeral 3 denotes a yoke guide provided at the tip of the main body 1, which is capable of reciprocating between the non-operating position shown by the two-dot chain line and the operating position shown by the solid line, and whose tip is attached to a wooden box or the like. By being pressed against the object 4, it is moved from the non-operating position to the operating position, and when it is separated from the object 4, it is automatically returned to the non-operating position. Although not shown, a hole is provided in the center of the yoke guide 3, through which the nail from the nail firing section passes. Reference numeral 5 denotes an operating position detector consisting of a proximity sensor provided at the tip of the main body 1, which is turned on when it detects that the yoke guide 3 has been moved to the operating position.

In this case 1. When the main body 1 is moved forward by the cylinder 2 and the tip of the yoke guide 3 is pressed against the object 4 to move the yoke guide 3 to the operating position, the operating position detector 5 detects this and turns on. , will be. Then,
Based on the ON state of the operating position detector 5, the nail can be ejected from the nail ejecting section, and when a ejecting command signal is given in this state, the nail 6 is ejected toward the object 4. When the operating position detector 5 is off, that is, when the yoke guide 3 is not located at the operating position, the nail ejecting section cannot eject a nail.

(Problem to be Solved by the Invention) In the above structure, when the yoke guide 3 is placed in the operating position with only a part of it touching the edge of the object 4 as shown in FIG. Even if the hole 3 is out of the object 4, the operating position detector 5 detects the operating position of the yoke guide 4 and is turned on, allowing the nail 6 to be fired.

If the nail 6 is fired in this condition, the nail 6
will be fired into the air away from the object 4 without hitting the object 4, and if there is a person in the direction in which the nail 6 is fired at this time, there is a danger that the nail 6 will hit the person. ,
The nail 6 will not be driven into the location on the object 4 where the nail 6 should be driven, and this will also cause problems in the reliability of the nail driving device.

The present invention was made in view of the above circumstances, and its purpose is to provide a safe and highly reliable automatic nail driving device that can reliably prevent nails from being ejected from the target object. It is on offer.

[Structure of the Invention] (Means for Solving the Problems) The automatic nailing device of the present invention includes a main body having a nail firing section,
The main body is provided so as to be movable back and forth between a non-operating position and an operating position, and has a hole in the center through which the nail from the nail firing section passes, and the tip thereof is pressed against the object to be nailed. a yoke guide that is moved from a non-operating position to an operating position by a yoke guide, an operating position detector that detects that the yoke guide is positioned in an operating position, and a detector that detects the presence or absence of the object around the yoke guide. a plurality of object detectors provided in the nail firing section, and only when the operating position detector detects the operating position of the yoke guide and each of the object detectors detects the respective object, It is unique in that it allows the firing of nails.

(Function) According to the above means, even if the operating position of the yoke guide is detected by the operating position detector, if the object is not detected by one of the plurality of object detectors, , no nails are fired from the nail firing section. Therefore, since the nail is fired only when there is an object in the direction in which the nail is fired, the nail will not be fired away from the target.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in FIG. 3, reference numeral 11 denotes an object to be nailed, such as a wooden box, which is conveyed by a conveyor 12 in the direction of the arrow in the figure, and is positioned at a predetermined position by a positioning stopper 13. There is. 14 is an orthogonal robot placed on the side of the conveyor 12, and an automatic nailing device 15 shown in FIGS. 1 and 2 is supported by this robot.

1 and 2, reference numeral 16 indicates a main body of an automatic nailing device 15, which has a nail firing section (not shown) for ejecting nails using compressed air;
6 in the front-rear direction (left-right direction in FIG. 1). Reference numeral 19 denotes a yoke guide provided at the tip of the main body 16, which is movable back and forth between the non-operating position shown by the solid line in FIG. 1 and the operating position shown by the two-dot chain line. When the actuator is pressed 1° against the object, it retreats from the non-operating position to the actuating position, and when it leaves the object, it dynamically returns to the non-operating position. As shown in FIG. 2, the center of the yoke guide 19 has a hole 20 through which the nail fired from the nail firing section passes.
is provided. Reference numeral 21 denotes an operating position detector consisting of, for example, a proximity sensor, which is provided below the yoke guide 19 at the tip of the main body 16, and is turned on when it detects that the yoke guide 19 is positioned at the operating position. . Reference numeral 22 denotes a mounting frame attached to the support 18, on which object detection sensors consisting of three photoelectric sensors are positioned around the yoke guide 19, in this case on the left, right and above the yoke guide 19. containers 23, 24, and 25 are attached. Each of these object detectors 23, 24, and 25 irradiates light toward an object in front of it and is turned on by receiving the light reflected by the object, thereby detecting the presence of an object in front of it. . The automatic nailing device 15 is turned on when the operating position detector 21 detects the operating position of the yoke guide 19, and the n object detectors 23, 24, and 25 are turned on when each detects an object. It is configured such that the nail can be ejected from the nail ejecting section only when the nail ejector is opened.

The operation of the above configuration will be explained. When the wooden box 11 as the object is positioned at a predetermined position, the automatic nailing device 15 is positioned by the orthogonal robot 14 at a position where it drives a nail into the wooden box 11. Then, the main body 16 is moved forward by the cylinder 17, and the yoke guide 19 is moved forward to the wooden box 11.
is moved from the non-operating position to the operating position.

At this time, the operating position detector 21 detects the operating position of the yoke guide 19 and is turned on, and each object detector 23
．． 24. 25 is turned on when it detects the wooden box 11, and based on the firing command signal being given in this state, a nail is fired from the nail firing part toward the wooden box 11 through the hole 20 of the yoke guide 19. This is how nailing is performed.

On the other hand, when nailing is performed as described above,
If the operating position detector 21 is not turned on, the yoke guide 19 is not pressed against the wooden box 11, or the pressing is insufficient, so that the nail is not fired.

Furthermore, even if the operating position detector 21 is turned on, if one of the three object detectors 23, 24, and 25 is not turned on, the hole 20 of the yoke guide 19 In such a case, the nail will not be fired because there is a possibility that the nail may be out of the range of 11.

Therefore, since the nail is fired only when it is confirmed that the target object, the wooden box 11, is in the direction in which the nail is fired (in front of the hole 20), the nail is removed from the tree T111 and the 9!
It is possible to reliably prevent exposure to radiation.

Note that the present invention is not limited to the embodiments described above and shown in the drawings; for example, a limit switch may be used as the operating position detector, and a capacitive proximity switch may be used as the object detector. The present invention may be modified as appropriate without departing from the spirit of the invention.

[Effects of the Invention] As is clear from the above description, according to the present invention, an operating position detector is provided for detecting that the yoke guide is positioned at the operating position, and a nail is driven around the yoke guide. A plurality of object detectors are provided to detect the presence or absence of an object, and the nail is fired only when the operating position detector detects the operating position of the yoke guide and each object detector detects the respective object. Since the structure is configured to enable this, it is possible to reliably prevent the nail from coming off the target object and being fired, thereby providing a safe and highly reliable automatic nail driving device.

[Brief explanation of the drawing]

1 to 3 show one embodiment of the present invention, FIG. 1 is a side view of the automatic nailing device, FIG. 2 is a front view of the same, and FIG. 3 is a schematic diagram showing the arrangement of the automatic nailing device. FIG. FIG. 4 is a diagram corresponding to FIG. 1 showing a conventional configuration. In the drawing, 11 is a wooden box (object), 15 is an automatic nailing device, 16 is a main body, 19 is a yoke guide, 20 is a hole, 21
23, 24 and 25 are object detectors, respectively. Agent Patent Attorney Norihiro Chika Ken (right) Ken Maru [4]

Claims (1)

[Claims] 1. A main body having a nail firing section, and a body provided on the main body so as to be movable back and forth between a non-operating position and an operating position, and having a hole in the center through which the nail from the nail firing section passes, and a tip end thereof. a yoke guide that is moved from a non-operating position to an operating position by being pressed against an object to be nailed; an operating position detector that detects when the yoke guide is placed in the operating position; and a periphery of the yoke guide. and a plurality of object detectors provided to detect the presence or absence of the object, the operating position detector detecting the operating position of the yoke guide, and each of the object detectors detecting the presence or absence of the object. An automatic nailing device characterized in that the nail can be ejected from the nail ejecting section only when detecting.