JPH07214464A - Buffing machine - Google Patents

Abstract

PURPOSE:To mechanically simplify and compact a buffing machine by sliding one end of a mounting pipe sideways in a constant distance on a rotation axis through an oscillation mechanism. CONSTITUTION:When an electric motor 26 is driven, a rotation axis 2 is revolved through a belt 28, and an oscillation axis 18 is revolved through a pulley 23, a timing belt 24 and a pulley 22 with revolution of the rotation axis 2. A link plate 16 is oscillated sideways through rollers 17 constituted by sandwiching a cam plate 19 as the cam plate 19 of this oscillation axis 18 is revolved, and oscillation of an upper arm symmetrically oscillates a lower arm around an axis 16a as its center. A hollow cylinder 2' is made to slide sideways in the same constant region on the rotation axis 2 through a flange body (p) of the hollow cylinder 2' with a buff 1 installed as it is clamped by the rollers 17 of this lower arm. At this time, the hollow cylinder 2' with the buff 1 installed on it is simultaneouly rotated with the rotation axis 2 as it is in the engagement state with the rotation axis 2 through a key and a key groove.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buffing machine equipped with an oscillation mechanism.

[0002]

2. Description of the Related Art A conventional buffing machine is as shown in the partial cross-sectional explanatory view of FIG. 4, that is, 1 is a buff attached to the outer peripheral surface of a rotary shaft 2 and is rotated at this time. Both ends of the shaft 2 are connected through slide bearings 3 and 4 on the device frame side,
The shaft bearings 2 and 6 are respectively supported by the rotary bearings 5 and 6, and a shaft end 2'a at one end (on the slide bearing 3 side in the illustrated example) is provided with a pulley 7 driven by a belt from an electric motor (not shown).

On the other hand, the other end side (slide bearing 4 side)
The shaft end 2′b of the bracket 8 is integrated with the rotary bearing 6 by a bracket 8
The eccentric cam 10 is attached to the eccentric cam 10 using a pin 9, and the eccentric cam 10 is rotatable on a pedestal mounted on the apparatus frame side via a bearing 11. It is made to rotate from.
Incidentally, 14 is an electric motor for oscillation.

[0004]

For the surface treatment of a printed circuit board, it is indispensable to perform a polishing treatment with a buffing machine, and the apparatus as described above is used for this purpose.
Is rotated at a high speed by the rotation of the pulley 7, and the eccentric cam 10 is rotated by the rotation of the pulley 12 at a unit of several hundreds of times per minute.
The buff 1 and its rotating shaft 2 and the rotating bearing are united in the above-mentioned configuration, and reciprocate left and right while rotating. There is a problem that a certain rigidity is required and the cost becomes high.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and is characterized in that the buff mounting tube is a hollow structure and is a separate structure surrounding the outer circumference of the rotating shaft. In addition to tightening, the key groove and key are connected to rotate together, and one end of the mounting pipe is slid left and right on the rotating shaft for a certain distance via an oscillation mechanism. Is characterized by.

[0006]

[Function] The buff mounting tube is a hollow tube and is oscillated by a separate structure surrounding the outer circumference of the rotary shaft, and the rotary shaft itself is not oscillated. And contributes to cost reduction and efficiency of operation.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is a buff which is attached to the outer periphery of a hollow cylinder 2'of a fixed length. Reference numeral 2 denotes a rotating shaft which is supported by bearings 5'and 6'on the apparatus frame side, and a hollow cylinder 2'having a buff attached at its intermediate portion is provided so as to surround the outer periphery thereof, and a fixed distance thereof is maintained. The oscillation mechanism for sliding left and right has the following configuration.

Reference numeral 15 is a box body of an oscillation mechanism, which is attached to the frame side of an apparatus (not shown). Reference numeral 16 denotes a link plate that can swing horizontally within a certain range around a shaft 16a that is installed in the center of the box body 15. As shown in the partial detailed sectional view of FIG. Each of the rollers 17 is provided in the opposite direction in the front-rear direction and the left-right direction, and at a facing interval in the front-rear direction, a disc or a collar described below is provided. It is made to hold the thick part of the body. (Refer to the detailed view of part of Fig. 3)

Reference numeral 18 denotes an oscillation shaft for swinging the link plate 16 between left and right fixed ranges, and a tilt plate 19 tilted at an appropriate angle θ is attached inside the box body, and 20 and 21. Is a bearing that supports the shaft 18.

Reference numeral 22 is a pulley attached to the shaft end for rotating the oscillation shaft 18, and the pulley 22 is rotated via a timing belt 24 between the pulley 22 and a pulley 23 attached to the rotary shaft 2. It is like this.

Therefore, the rotary drive of the rotary shaft 2 is performed by driving the pulley 25 at the shaft end with the output pulley 27 of the electric motor 26 provided at another position via the belt 28.

When the electric motor 26 is now driven, the belt 28
The rotary shaft 2 is rotated via the
3, the oscillation shaft 18 is rotated through the timing belt 24 and the pulley 22, and the swash plate 19 of the shaft is rotated, so that the link plate 16 is sandwiched by the rollers 17 that sandwich the swash plate 19. Swings left and right, and the swing of the upper arm is axis 1.
The lower arm is oscillated symmetrically about 6a, so that the hollow cylinder 2'is mounted on the rotary shaft 2 via the collar body p of the hollow cylinder 2'with the buff 1 attached by the rollers 17 of the lower arm. It can be slid to the right and left in the same fixed range. At this time, since the hollow cylinder 2'to which the buff 1 is attached is engaged with the rotary shaft 2 via the key 29 and the key groove 30, it is simultaneously rotated with the rotary shaft 2.

Oscillation of the hollow cylinder 2'to which the buff 1 is attached in the above is usually several hundred revolutions per minute and its stroke length is about 5 mm to 10 mm.

[0014]

The present invention is configured as described above, and the supporting shaft to which the buff 1 is attached is a hollow tube formed separately from the rotating shaft 2, and its oscillation mechanism is the rotating shaft 2. Since it is not rotated together with the rotation, it is mechanically simpler and more compact than the conventional device, and the vibration and the amount of vibration can be reduced as much as possible.
Further, since the electric motor dedicated to the oscillation is not necessary, the cost can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional explanatory view showing a configuration of a buffing machine according to the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

3 is a cross-sectional view taken along line YY of FIG.

FIG. 4 is a schematic cross-sectional explanatory view of a conventional device.

[Explanation of symbols]

 1 Buff 2 Rotating Shaft 2'Hollow Cylinder 7 Pulley 10 Eccentric Cam 16 Link Plate 17 Roller 18 Oscillation Shaft 19 Inclined Plate

Claims (2)

[Claims] 1. A buff mounting pipe is hollowed out so as to have a separate structure surrounding the outer circumference of a rotary shaft, and is connected to a key groove through a key so as to rotate together, and one end of the mounting pipe. The buffing machine is characterized in that it slides left and right on the rotary shaft for a certain distance through an oscillation mechanism. 2. An oscillation mechanism in which a collar body is formed at one end edge of the buff mounting tube, and the collar body is sandwiched between a pair of rollers attached to a link plate that swings left and right. Buffing machine.