JPS61142028A - Part mounting apparatus - Google Patents

Abstract

PURPOSE:To mount a part held by a chuck to a correct position by installing a means for shifting a holding means and a member onto which the part is to be mounted so as to approach and depart from each other in the vertical direction. CONSTITUTION:A supporting projection piece 13 is installed over the holding means 18 of a supporting shaft 12 and has the axis line coinciding with that of the supporting shaft 12, and has a circular arcuate surface 14 whose diameter is reduced gradually in the lower part. A basic board 17 has a circular arcuate receiving surface 18 which receives the circular arcuate surface 14 of the supporting projection piece 13 and an insertion hole 19 for loosely inserting the supporting shaft 12 which is continuous to the receiving surface 18. The upper part of a guide member in straight cylindrical form which has the axis line parallel to that of the supporting shaft 12 is fixed onto an installation board 9. Said guide member has a guide hole opened downwardly, and said guide hole can be fitted onto the guiding projection which is formed upwardly onto a chassis 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a component mounting device that is used in the assembly process of a magnetic tape playback device.

BACKGROUND ART In the prior art, in order to ensure that a component having an insertion hole in a magnetic tape playback device can be inserted into a shaft protruding from a chassis, the tip of the shaft is chamfered. . This allows the shaft to be smoothly inserted into the insertion hole of the component.

Problems to be Solved by the Invention In such prior art, when chamfering the tip of the shaft fixed to the chassis, the chamfering operation is not performed due to reasons such as adjacent parts being attached to the chassis. There is a problem in that the space in which it can be carried out is limited.

An object of the present invention is to provide a component mounting device that allows components to be mounted on a chassis or the like.

Means for Solving the Problems The present invention comprises: a support shaft extending vertically; a means attached to the lower part of the support shaft for gripping a component; and a means provided above the gripping means of the support shaft and arranged along the axis of the support shaft. a support protrusion having an axis line that coincides with the arc surface and whose diameter becomes smaller toward the bottom; an arcuate receiving surface that receives the arcuate surface of the support protrusion; and a support shaft connected to the receiving surface.
a base having a circular insertion hole; and a guide member having a downwardly open guide hole or a downwardly tapered conical guide protrusion provided in association with the support shaft; The member to which the component gripped by is mounted has an upward conical guide protrusion that tapers upward in correspondence with the guide member, or a guide that is open upward in correspondence with the downward guide protrusion. A component mounting device is characterized in that a hole is formed therein, and the gripping means and the member to which the component is to be mounted are moved vertically toward and away from each other.

Embodiment FIG. 1 is a sectional view of one embodiment of the present invention, and FIG. 2 is an exploded perspective view thereof. Chassis 1 of magnetic tape playback device m
is fixed to a pedestal 2, and this pedestal 2 is conveyed by a conveyor 3. A component 4 is mounted on the chassis 1 by a component mounting device according to the present invention. This part 4 is
They are sequentially supplied one by one by the vibrating feeder 5, and are aligned in a predetermined posture by the alignment member 6. The parts 4 kept in a predetermined posture by the alignment member 6 are
It is gripped by a pair of gripping pieces 8 of the chuck 7 operated by electromagnetic force. The chuck 7 is fixed to a stand 9, and the stand 9 is fixed to a stand 11 by means of a connecting rod 10.

The lower end of the support shaft 12 in the form of a right cylinder extending in the vertical direction is fixed to the base 11 . A support protrusion 13 is connected to the upper end of the support shaft 12 . This support protrusion 13 has a truncated cone portion 15 having an axis that coincides with the axis of the support shaft 12 and has a conical surface 14 which is an arcuate surface whose diameter decreases as it goes downward, and a truncated cone portion 15 that extends upward from the truncated cone portion 15. It consists of a continuous right circular column part 16.

The base 17 has a conical receiving surface 18 that receives the conical surface 14 of the support protrusion 13, and an insertion hole 19 into which the support shaft 12 is loosely inserted. The support shaft 12 inserts a coil spring 20, and the spring 20 is mounted between the base 11 and the base 17.
As a result, the conical portions 14, 18 are brought into close contact with each other, so that in the natural state where no external force is acting on the support shaft 12, the axis of the support shaft 12 is kept in the vertical direction. It is movable by a moving means 21 and a lateral moving means 22.

For attachment, the upper part of a guide member 23 having a right cylindrical shape and having an axis parallel to the axis of the support shaft 12 is fixed to the stand 9 . This guide member 23 has a guide hole 24 open downward. This guide hole 24 can be fitted into an upwardly directed guide protrusion 25 protruding from the chassis 1 . This guide protrusion 25
includes an upwardly tapered conical portion 26 and a right circular column portion 27 connected to the conical portion 26. Another guide shaft 28 is provided upright on the chassis 1. A pair of reels provided for a cassette tape are inserted into these guide shafts 25t28 after the installation of the magnetic tape reproducing apparatus is completed. The chassis 1 is provided with pins 33 and 34 erected through which the elongated holes 31 and 32 of the component 4 are inserted.

When mounting the component 4 on the chassis 1, the chassis 1 carried by the conveyor 3 is stopped at a predetermined position. The chuck 7 grips the component 4 fed from the vibratory feeder 5, and is moved by the horizontal moving means 22 so that the elongated holes 31, 32 of the component 4 are positioned almost directly above the pins 33, 34. Therefore, the elevating/lowering moving means 21
descend. Part 4 being gripped by chuck 7
When the elongated holes 31, 32 are slightly offset from the pin 33.34, the part 4 abuts against the upper end of the pin 33.34, so that the support shaft 12 is slightly displaced against the spring force of the spring 20. It is pushed up and angularly displaced, resulting in the state shown in the third diagram. By such an operation, the elongated holes 31 and 32 of the part 4 are
The pins 33 and 34 fit securely into the. Therefore, it is not necessary to unnecessarily set the static position of the chassis 1 by the conveyor 3 and the static position of the chuck 7 by the horizontal moving means 20 with high precision, which is advantageous.

After the component 4 is mounted on the chassis 1, the lifting drive means 21 displaces the base 17 and therefore the chuck 7 upward. As a result, the support shaft 12 can be returned to a posture having a vertical axis as shown in the first drawing by the spring force of the spring 20.

Therefore, the parts 4 supplied from the vibrating feeder 5 and aligned by the alignment member 6 can be accurately gripped again by the gripping piece 8 of the chuck 7, and the parts 4 can be reliably attached to other subsequent chassis. It began to be carried out.

FIG. 4 is a perspective view of a portion of another embodiment of the invention.

In this embodiment, a downward guide projection 37 having a downwardly tapered conical surface 36 is fixed to the base 9. , the axis of the second guide protrusion 37 is in the vertical direction.

A guide hole 38 into which the guide protrusion 37 fits is formed in the chassis 1a. The part 4 has elongated holes 41, 42 for fitting pins 39, 40 formed in the chassis 1. Also in this embodiment, the conical surface 36 of the guide protrusion 37 fits into the guide hole 38, so that the elongated holes 41, 42 of the part 4 held by the gripping piece 8 of the chuck 7 are connected to the part 4. It becomes possible to reliably fit into the pins 39 and 40 when lowering.

As another embodiment of the present invention, the conical surface 14 may be a spherical surface, and the receiving surface 18 may be configured as a spherical surface corresponding to this spherical surface.
Such configurations are also within the scope of the following claims.

Effects As described above, according to the present invention, since the support shaft can be angularly displaced against the spring force of the spring, the guide protrusion can be reliably fitted into the guide hole, and the 71 parts can be reliably fitted into the guide hole. It is possible to attach the device to an accurate position.

[Brief explanation of drawings]

WS1 is a sectional view of one embodiment of the present invention, FIG. 2 is an exploded perspective view of the embodiment, FIG. 3 is a sectional view of the vicinity of the upper part of the support shaft 12, and FIG. 4 is another embodiment of the present invention. FIG.

Claims (1)

[Scope of Claims] A support shaft extending vertically, a means attached to the lower part of the support shaft for gripping a component, and an axis provided above the gripping means of the support shaft and aligned with the axis of the support shaft. and has a support protrusion having an arcuate surface that becomes smaller in diameter toward the bottom, an arcuate receiving surface for receiving the arcuate surface of the support protrusion, and an insertion hole connected to the receiving surface and into which the support shaft is loosely inserted. a component gripped by a gripping means, the component comprising a base and a guide member having a guide hole opening downward or a downwardly tapered conical guide protrusion provided in association with the support shaft; The member to which the guide member is attached includes an upward conical guide protrusion tapering upward corresponding to the guide member, or a guide gripping means opening upward corresponding to the downward guide protrusion; A component mounting device characterized in that the component is moved vertically close to and away from the member to which the component is to be mounted.