JPH0222531Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an assembly device, and particularly to an assembly device that can assemble butterflies with high precision.

[Prior art and its problems]

In general, when assembling a butterfly by screwing it into a butterfly hole drilled in a workpiece and connecting it to a shaft whose upper surface is inclined at a predetermined angle, the butterfly is assembled manually, or
There was an assembly method using an assembly device as shown in FIGS. 8 and 9.

That is, Fig. 8 shows the overall schematic diagram, and Fig. 9 shows the overall schematic diagram.
The assembly device whose main parts are shown in the figure is the bed 14.
Arms 13a and 13b that are movable up and down and back and forth are provided on the top surface.

A holder part 31 is provided at the lower end of the horizontal arm part 13b of this assembly device, and this holder part 31 is
The lower surface is inclined, and an insertion hole 31a for a driver 10 is formed at a position where the vacuum pad 7 is located and which faces the threaded portion of the butterfly 6.

A workpiece 1 having a butterfly hole 3 and a butterfly stocker 12 are placed on the upper surface of the bed 14 at a predetermined interval, and the workpiece 1 has a reference pin hole drilled therein. 1a
The position is determined by the position of the reference pin 2 erected on the bed 14, and in the butterfly hole 3 of the workpiece 1, there is a shaft 8 whose upper surface is inclined horizontally (as shown in FIG. 9). The butterfly hole 3 extends in the direction perpendicular to the page.
has a size that allows the holder portion 31 to be inserted therein.

On the other hand, the butterfly stocker 12 stores therein a plurality of butterflies 6 stacked at the same inclination angle as the upper surface of the shaft 8 located in the butterfly hole 3 of the workpiece 1, and furthermore, the holder portion 31 can be inserted.

When assembling the butterfly 6 into the butterfly hole 3 of the work 1, first operate the arms 13a and 13b of the assembly device to
is placed on the butterfly stocker 12, and then suctioned with the vacuum pad 7 to attract the uppermost butterfly 6 to the lower surface of the holder part 31.
1, moves horizontally, and descends when it reaches above the butterfly hole 3 of the work 1.

Thereafter, the butterfly 6 is positioned on the upper surface of the shaft 8 in the butterfly hole 3, and the butterfly 6 is fixed to the shaft 8 with a screw 9 using a driver 10.

In the case of the above, when inserting the butterfly 6 into the butterfly hole 3, the disc-shaped butterfly 6 is inserted into the circular butterfly hole 3, but the angle of inclination of the upper surface of the shaft 8 is the same as the angle of inclination of the upper surface of the shaft 8. Since the butterfly 6 descends at an angle of inclination of In addition to this, it was also necessary to make the gap between the butterfly 6 and the butterfly hole 3 smaller than the pitch 4 between the reference pin 2 and the butterfly hole 3.

That is, for example, a butterfly 6 with an outer diameter of 30φ
In the case of , the gap dimension with butterfly hole 3 is 0.05
~0.2mm, and if this value is set to 0.1mm, the positioning accuracy of the holder part 31 when supplying the butterfly 6 must be 0.1mm or less,
Since extremely high precision is required, there is a problem in that only expensive assembly equipment can be used.

This invention solves the problems of the conventional ones as described above, and provides an assembly device that can assemble a butterfly with high precision without using a high precision assembly device. With the goal.

[Means for solving problems]

In order to solve the above problems, this idea
In the assembly device, the butterflies stacked in a stocker are suction-transferred by the lower surface of the holder part, and are positioned in the butterfly hole of the workpiece and on the upper surface of a shaft having an inclined upper surface. The suction surface has a larger inclination angle than the upper surface of the shaft.

[Effect]

By adopting the above-mentioned means, this idea
Because the butterfly being sucked and conveyed has a large inclination angle, there is a large gap between it and the edge of the butterfly hole into which it is inserted.This makes it possible to insert the butterfly into the butterfly hole sufficiently even if the positioning accuracy of the butterfly is not high. It is possible to do so.

〔Example〕

Embodiments of this invention shown in the drawings will be described below.

FIG. 1 shows the main parts of the assembly device according to this invention, and the whole is the same as the conventional device, and the arms 13a, 13b are similar to the conventional device.
The holder part 1 is movable in the vertical direction (vertical direction) and the front-back direction (horizontal direction) by
The lower surface of the butterfly stocker 12 is inclined at a greater angle than the inclination angle of the butterflies 6 stacked and stored in the butterfly stocker 12.

With the holder part 11 configured in this way, the vacuum pad 7 provided there attracts the butterfly 6, rises, moves horizontally, and then descends inside the vacuum hole 3 of the workpiece 1. However, since the inclination angle of the butterfly 6 is larger than that of the conventional one, the gap between the butterfly hole 3 and the butterfly 6 in the direction perpendicular to the shaft becomes larger.

That is, as shown in FIG. 2, for example, when the mounting inclination angle of the upper surface of the shaft 8 is 25 degrees, the inclination of the conventional holder part 31 is 25 degrees, but in the case of the device according to this invention, the inclination of the holder part 31 is 25 degrees. Holder part 11
Since the slope of is 30 degrees, the gap will increase by the amount shown by 15.

Therefore, even if the accuracy of the assembly device is not very high, it can be used satisfactorily.

FIG. 3 shows a second embodiment of the holder part 11, in which the holder part 11 made of resin or metal is provided with a vacuum pad 7 in its center, while the shaft 8 The positioning pin 16 erected in the longitudinal direction on the upper surface is smaller than the pin hole 20 bored in the butterfly 6.

Therefore, as in the embodiment described above, by increasing the inclination angle, the gap between the butterfly hole 3 and the butterfly 6 is increased, and when inserting the butterfly, the direction perpendicular to the direction of the gap, that is, the longitudinal direction of the shaft 8 is increased. Even if the end of the butterfly 6 comes into contact with the butterfly hole 3 when the butterfly 6 deviates in the direction shown in FIG. , the upper surface of the shaft 8 can be contacted.

Further, FIG. 5 shows a third embodiment of the holder part 11, and this embodiment has a rubber vacuum pad 1 at the tip of the holder part 11.
7, and this vacuum pad 1
The distal end portion of 7 is also inclined in the same manner as in each of the above embodiments.

In each of the above embodiments, the butterfly 6
In addition to the holder part 11 that attracts the butterfly 6, a clamp member 18 that presses the upper surface of the butterfly 6 downward
is provided in the assembly device, and when the clamp member 18 presses the butterfly 6, the angle of inclination of the butterfly is reduced to match the angle of inclination of the upper surface of the shaft 8 (FIG. 6).

After this, the butterfly is fixed to the shaft using a screwdriver.

Note that even in the cases shown in the first and third embodiments, the butterfly 6
Even if the end comes into contact with the butterfly hole 3, it can be easily inserted into the butterfly hole 3.

Furthermore, in each of the above embodiments, the holder part 11 is moved in the vertical direction (vertical direction) and horizontal direction, that is, the movement is performed in a straight line to insert the butterfly 6 in the butterfly stocker 12 into the butterfly hole of the workpiece. However, as shown in Figure 7,
Even if the holder part 11 is configured to rotate approximately 180 degrees in the vertical direction about the rotation center 21, the butterfly suction surface of the holder part is inclined at a greater angle than the inclination angle of the upper surface of the shaft, which is the mounting surface. Because of this, as mentioned above, the gap between the butterfly and the butterfly hole becomes large, so even with this configuration, it can be used satisfactorily without requiring high precision. It is.

[Effect of idea]

By configuring this idea as described above,
Even if the butterfly feeding accuracy is not good, it can be assembled satisfactorily, so the overall cost can be made low, and even if the assembling accuracy is rough, it can be assembled well, so work efficiency is high. It has excellent effects such as:

[Brief explanation of drawings]

Fig. 1 shows the main parts of the assembly device according to this invention, Fig. 2 shows the gap with respect to the angle of inclination, and Fig. 3 shows the main parts of the assembly device according to this invention.
The figure shows the main part of the second embodiment, Figures 4a and b
is a diagram showing the relationship between the deviation of the butterfly in the shaft direction and the butterfly hole, FIG. 5 is a diagram showing the third embodiment, and FIG. 6 is a schematic diagram showing the means for aligning the inclination angle of the butterfly with the upper surface of the shaft. FIG. 7 is a diagram showing the case where the holder section is rotated, FIG. 8 is a schematic diagram showing the entire assembly device, and FIG. 9 is a diagram showing the main parts of the conventional assembly device. 1...Workpiece, 2...Reference pin, 3...Butterfly hole, 4...Pitch dimension between reference pin and butterfly hole, 5...Gap between butterfly and butterfly hole, 6...Butterfly, 7, 17...Bakyum pad , 8...Shaft, 9...Screw, 10...
Driver, 11, 31...Holder part, 12...
Butterfly stock, 13a, 13b...arms,
14...Bed, 15...Gap that increases depending on the inclination angle, 16...Butterfly positioning pin, 18...
... Clamp member, 20 ... Pin hole, 21 ... Rotation center.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Butterflies stacked in a stocker are suctioned and conveyed by the bottom surface of the holder so that they are located in the butterfly hole of the workpiece and on the top surface of the shaft whose top surface is inclined. 1. An assembly apparatus characterized in that the suction surface of the holder part is inclined at a larger angle than the upper surface of the shaft to form a gap between the butterfly hole and the butterfly. (2) The assembly device according to claim 1, wherein the holder portion is made of a flexible material. (3) When the holder portion suctions and conveys the butterfly to the shaft of the butterfly hole, the clamp member presses the butterfly to match the inclination angle with the top surface of the shaft, and also presses the butterfly against the top surface of the shaft. An assembly device according to any one of claims 1 and 2, which has now been registered as a utility model. (4) The assembly according to any one of claims 1 to 3, wherein the holder part is configured to move vertically and horizontally to convey the butterfly. Device. (5) The assembly device according to any one of claims 1 to 3, wherein the holder part is configured to rotate vertically to convey the butterfly.