JPH04118946U - Tool change mechanism that detects tool attachment and detachment status - Google Patents

Abstract

(57) [Summary] [Purpose] To detect an abnormality in which the tool 3 attached to the spindle 2 could not be placed on the tool holder 5A. [Structure] A light emitter 6 and a light receiver 7 are provided at both ends of the holder plate 4, and the light beam 8 from the light emitter 6 is transmitted to the tool holder 5.
Set the direction of the floodlight beam 8 so that it passes above the
The light receiver 7 is placed at a position to receive the projected light beam 8, and the moving body 1 to which the spindle 2 is attached moves to the position where the light beam 8 is received.
Place the used tool attached to the empty tool holder 5A, and move the spindle 2 to the tool holder 5 as the moving body 1 moves.
If the light receiver 7 does not receive the projected beam 8 when the tool 3 reaches the upper position B, it is determined that the tool 3 is on the spindle 2.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea was developed for tool changing mechanisms used in printed circuit board processing equipment, etc. When attaching or detaching a tool to a tool holder, a tool exchange function is used to detect the attachment or detachment status of the tool to the tool holder. This is about the conversion mechanism.

0002

[Conventional technology]

Next, a conventional tool exchange mechanism will be explained with reference to FIG. 1 in Figure 2 is a moving object , 2 is a spindle, 3 is a tool, 4 is a holder plate, and 5 is a tool holder. Transfer A spindle 2 is attached to the moving body 1, and a tool 3 is attached to the spindle 2. . The moving body 1 moves in the Z-axis direction and the Y-axis direction, and performs drilling, contour processing, etc. of printed circuit boards. do. The moving body 1 also moves on the top of the holder plate 4 when exchanging the tool 3. do. A large number of tool holders 5 are arranged on the holder plate 4.

0003 For example, remove the tool 3 attached to the spindle 2, place it on the tool holder 5A, and The case where the tool 3 of the tool holder 5B is mounted on the spindle 2 will be explained. spindle 2 is moved to the upper part of the tool holder 5A by the moving body 1, and the spindle 2 is lowered. . Place the tool 3 on the tool holder 5A, raise the spindle 2, and place the tool 3 on the tool holder 5B. Move it to the top. Next, lower the spindle 2 and move the tool in the tool holder 5B. Attach it to the spindle 2 and raise the spindle 2.

0004 Next, the relationship between the tool 3 and the tool holder 5 will be explained with reference to FIG. Holder plate 4 A tool holder base 5C is fixed to the tool holder base 5C. 5 and a coil spring 5D are housed therein. The tool holder 5 moves up and down with a coil spring 5D. It is composed of a leaf spring so that the tool 3 can be attached and detached.

[0005] Next, the relationship between the spindle 2 and the tool 3 will be explained with reference to FIG. On spindle 2 , a tool chuck 9, and the tool 3 is mounted on the tool chuck 9.

[0006]

[Problem that the idea aims to solve]

In FIG. 2, when the tool 3 attached to the spindle 2 is placed on the tool holder 5A, If the leaf spring of the tool holder 5 becomes weak, the tool cannot be placed on the tool holder 5A. Also, If the tool chuck 9 in Fig. 4 becomes defective, the tool 3 from the spindle 2 will be removed from the tool holder. It cannot be placed in 5A. In Figure 2, it is not possible to determine whether it has been properly attached or detached. , moves to the next tool holder 5B without being able to place tool 3 in tool holder 5A. This may cause the tools to collide, which may damage the tool change mechanism. .

[0007] This idea provides a light emitter and a light receiver at both ends of the holder plate 4, and Set the direction of the projection beam so that it passes over the top of the tool holder, and Place the light receiver at a position to receive the light beam, and place the tool 3 on the tool holder 5A. The purpose of the present invention is to provide a tool changing mechanism that detects abnormalities that cannot be detected.

[0008]

[Means to solve the problem]

To achieve this objective, in this invention, multiple tool holders are arranged and a holder plate for storing tools in the tool holder; a first holder plate of the holder plate; a floodlight attached to the end and a second end of the holder plate; and a receiver for receiving the light beam from the light projector passing through the upper part of the tool holder. A moving body having a spindle attached thereto moves and attaches it to the spindle. Place the used tool in the empty first tool holder, and by the movement of the moving body, When the spindle reaches the upper position of the second tool holder, the light receiver emits the light. If the beam is received, it is determined that the tool is not on the spindle, and the light receiver is activated. When the projected beam is not received, it is determined that the tool is on the spindle. Ru.

[0009]

[Effect]

Next, the configuration of the tool exchange mechanism according to this invention will be explained with reference to FIG. 6 in Figure 1 is The light emitter, 7 is a light receiver, 8 is a light beam, and the other parts are the same as in FIG. The emitter 6 is attached to the end 4A of the holder plate 4, and the receiver 7 is attached to the holder plate 4. It is attached to the end 4B of the seat 4. The light beam 8 from the projector 6 is directed to the tool holder. The direction is set so that it passes over the top of 5. The light receiver 7 receives the emitted light beam 8. It will be placed in the desired position.

0010 The movable body 1 moves, places the used tool 3 in the empty tool holder 5A, and removes the used tool 3 from the tool holder. Move spindle 2 to the upper position of tool holder 5B to pick up tool 3 from tool holder 5B. At this time, if the receiver 7 receives the projected beam 8, it means that there is no tool 3 on the spindle 2. If the light receiver 7 does not receive the projected beam 8, the projected beam 8 is detected by the tool 3. Since it is interrupted, it is determined that the tool 3 is on the spindle 2.

[0011]

[Effect of the idea]

According to this idea, the emitter and the receiver are provided at both ends of the holder plate, and the emitter and receiver are installed at both ends of the holder plate. Set the direction of the projected beam so that it passes over the top of the tool holder. , place the receiver in the position to receive the emitted beam, so place the tool in the tool holder. It is possible to detect abnormalities that could not be detected previously. Also, multiple moving objects are on the Y axis. If the problem is that the tool cannot be placed in the tool holder even if the It can be detected using only optical equipment.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a tool changing device according to this invention.

FIG. 2 is a configuration diagram of a tool changing device according to the prior art.

FIG. 3 is an explanatory diagram of the relationship between the tool and tool holder in FIG. 2;

FIG. 4 is an explanatory diagram of the relationship between the tool and spindle in FIG. 2;

[Explanation of symbols]

1 Mobile object 2 spindle 3 Tools 4 Holder plate 4A end 4B End 5 Tool holder 5A First tool holder 5B Second tool holder 6 Floodlight 7 Light receiver 8 Light beam

Claims (1)

[Scope of utility model registration request] 1. A holder plate in which a plurality of tool holders are arranged, a holder plate for storing tools in the tool holders, a projector attached to a first end of the holder plate, and a projector attached to a second end of the holder plate. a light receiver that is attached to the tool holder and receives a light beam emitted from the light emitter that passes through the upper part of the tool holder, and the movable body to which the spindle is attached moves to empty the used tool attached to the spindle. If the spindle is placed on a first tool holder and the light receiver receives the projected beam when the spindle comes to the upper position of the second tool holder due to the movement of the movable body, it is determined that the tool is not on the spindle. The tool changing mechanism is characterized in that, when the light receiver does not receive the projected light beam, it is determined that the tool is on the spindle.