JP2003328196A - Barrel apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a barrel apparatus which can satisfactorily perform the surface treatment of work groups of flat and small-sized works. <P>SOLUTION: A barrel 1 is pivotally supported tiltably at a revolving shaft. This barrel 1 is provided with a port 1a for putting in and out of the works atop the barrel and is supported at the revolving shaft 2 inclined at its bottom end with respect to the perpendicular line as oscillating means for tilting and oscillating the barrel to the central line side of rotation of the revolving shaft 2 and the tilting position side inclined therewith. The barrel is provided with a projecting piece 5 projecting downward from the central position at the bottom surface of the barrel. This projecting piece 5 is disposed at a supporting member 6 projecting upward of the revolving shaft 2 by a supporting shaft 7 in a transverse direction in such a manner that the barrel 1 supported freely tiltably to the tilting position side deviating the central line of rotation of the barrel 1 from the extension line position side of the revolving shaft 2 and rotated around the central line of rotation inclined with respect to the perpendicular is made freely tiltable with the revolving shaft 2. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel device particularly suitable for performing surface treatments such as electroplating, electrolytic polishing, and cleaning on flat electronic parts and other small flat work groups.

[0002]

2. Description of the Related Art As shown in FIG. 8, a barrel 1 having a work inlet / outlet opening 1a on its upper surface is attached to a rotary shaft 2 which is inclined with respect to a vertical line at the center of the lower end of the barrel 1, and the barrel 1 is rotated about its rotation center line. Is tilted with respect to the perpendicular and is immersed in the treatment liquid in the treatment liquid A, and when the barrel is rotated, for example, when it is rotated at a slow speed of about 30 times per minute, it is accommodated in the barrel 1. The small work group which has been subjected to the surface treatment while being stirred in the barrel repeats an operation of lifting in the rotation direction of the barrel 1 as the barrel 1 rotates and then an operation of sliding down the inner wall surface of the barrel 1 by its own weight. The barrel device adapted to be applied is, for example, Utility Model Registration No. 3049355.
It is known from the official gazette.

[0003]

However, in the conventional barrel device described above, particularly when trying to process a small flat work group, many works tend to adhere to the inner surface of the barrel 1 on the circumferential side, and moreover, It is difficult for the workpieces to shift from each other in the barrel. Due to this, the work adhered to the inner wall surface of the barrel becomes difficult to be subjected to uniform surface treatment because the portion in contact with the inner wall surface of the barrel 1 does not sufficiently come into contact with the treatment liquid.
Further, when the surface treatment is plating, the displacement between the works is small, so that the works are plated in a lump state. That is, a defect such as a defective product occurs. It is an object of the present invention to provide a barrel device that solves these problems.

[0004]

The invention according to claim 1 is
In a barrel device having a barrel having a work loading / unloading port on the upper surface and having a lower end of the barrel supported by a rotating shaft tilted with respect to a vertical line, and rotating around a rotation center line tilted with respect to the vertical line, the barrel is rotated. A barrel device is characterized in that the shaft is tiltably supported by a shaft, and swinging means is provided for swinging the barrel toward a rotation center line side and a tilting position side where the barrel tilts with respect to the rotation center line side. According to a second aspect of the present invention, in the barrel device according to the first aspect, the barrel is tiltably supported by the rotation shaft, and the barrel is tilted relative to the rotation center line side and the tilt position side. As a swinging means for swinging the shaft, a projecting piece projecting downward from the central position of the bottom surface of the barrel is pivotally supported by a lateral supporting shaft on a supporting member projecting upward from the upper end of the rotating shaft. The present invention resides in a barrel device. According to a third aspect of the present invention, in the barrel device according to the first aspect, a universal joint is provided between a lower central surface of the barrel and an upper end of the rotating shaft as means for pivotally supporting the barrel on the rotating shaft. As the swinging means for swinging the barrel between the rotation center line side and the tilting position side that tilts with respect to the rotation center line side, the rotation center line of the barrel is deviated from the extension line position side of the rotation shaft. One of a cam having a cam surface that guides to the tilt position side and an engaging element that acts on the cam surface is provided on a frame that supports the rotating shaft, and the other is provided on the barrel side. Exists in the barrel device.

[0005]

According to the first aspect of the invention, since the barrel is tilted and rocked with the rotation, the work group is prevented from adhering to the inner peripheral wall surface of the work, and each work is treated with the processing liquid. Individual workpieces can be satisfactorily plated without coming into contact with each other, promoting displacement of the workpieces from each other, and preventing the workpieces from agglomerating. According to the invention of claim 2,
Providing a protruding piece that protrudes downward from the center position of the lower surface of the barrel,
A supporting member projecting above the rotary shaft is supported by a lateral support shaft so as to be tiltable to a tilting position side where the rotation center line of the barrel deviates from the extension line position side of the rotary shaft. Thus, the barrel is stable with its center of gravity tilted to the tilting position side below the support shaft. Further, when the center of gravity of the barrel is tilted to the upper tilting position side of the support shaft due to the rotation of the barrel, the barrel becomes unstable and rapidly swings to the lower tilting position side of the support shaft. This occurs immediately after the rotation of the barrel causes the axis of the support shaft to be oriented vertically. Therefore, it occurs twice in one rotation of the barrel. When such tilting and oscillating motion is repeated, a sudden force in the radial direction of the barrel is applied to the work group in the barrel that tries to rotate with the rotation of the barrel, so that the work adheres to the inner wall surface on the circumferential side of the barrel. It is possible to prevent the problem of the above-mentioned conventional barrel device in which the contact of the work with the processing liquid becomes non-uniform and the processing becomes uneven due to the adhesion, and at the same time, promote the displacement of the positions of the works in the barrel. In particular, when the surface treatment is a plating treatment, it is possible to prevent the workpieces from being agglomerated and plated. According to the third aspect of the present invention, the barrel is provided with the work inlet / outlet opening on the upper surface, and the lower end of the barrel is supported by the rotating shaft inclined with respect to the vertical line, and rotates about the rotation center line inclined with respect to the vertical line. In the barrel device, the lower central surface of the barrel and the upper end of the rotary shaft are connected via a universal joint, and the rotation center line of the barrel extends from the extension line position side of the rotation shaft to the tilt position side deviated from the extension line position side. By providing either one of a cam having a cam surface for guiding the cam and an engaging element acting on the cam surface on a frame supporting the rotating shaft, and the other on the barrel side,
During the rotation of the barrel, the barrel is guided by the cam surface so that the rotation center line swings between the extension line position side of the rotation shaft and the tilt position position side deviated from the extension line position side. At this time, the force in the radial direction of the barrel acts on the work group in the barrel which is about to rotate with the rotation of the barrel during the rotation of the barrel,
It is possible to prevent the work from adhering to the inner surface of the peripheral side wall of the barrel, and it is possible to solve the problem that the contact with the processing liquid of the work caused by the adhesion becomes uneven and the processing unevenness occurs, and at the same time, It is possible to promote the displacement of the works from each other, and it is also possible to solve the problem that the works are plated in a lump when the surface treatment is a plating treatment.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to FIGS. In the figure, A indicates a processing tank containing a processing liquid, and B indicates a barrel device housed in the processing tank. The barrel device B has a work inlet / outlet opening 1a at its upper end and a rotary shaft 2 inclined at a lower end with respect to a vertical line. The barrel 1 is provided so as to rotate around a rotation center line that is connected and inclined with respect to the perpendicular. The barrel device B includes a horizontal bar C, which is provided above the processing tank A, and two horizontal bars C, which are provided above and below the processing tank A.
3, a frame 4 is detachably attached to the processing tank A and is obliquely inclined downward. The rotary shaft 2 is orthogonal to the frame 4 at a lower portion of the frame 4 in the inclination direction. In addition, it is installed so as to project from the upper surface of the frame 4, so that it is provided in the processing tank A in a state of being inclined with respect to the perpendicular. The above structure is the same as the conventional barrel device. In one example of the embodiment of the present invention, the barrel 1 has a rotating shaft 2
A swinging means is provided for pivotally supporting the barrel 1 and swinging the barrel 1 to the rotation center line side and the tilting position side to tilt with respect to the rotation center line side. One example of the implementation of the tilting and swinging means is shown in FIGS. That is, the means is such that the projecting piece 5 projecting downward from the central position of the bottom surface of the barrel 1 is supported by the supporting member 6 projecting above the upper end of the rotating shaft so as to be tiltable by the lateral supporting shaft 7. It was To further elaborate on this,
The projecting piece 5 is formed in a flat plate shape, and the supporting member 6 faces two flat supporting portions 6a, 6a protruding upward with a gap from an upper end of a gear 9a that rotates integrally with a rotating shaft 2 described later. The projecting piece 5 is inserted between the supporting portions 6a of the supporting member 6 so as to be parallel thereto, and the flat plate 5 serves as an extension line of the rotating shaft 2. When the barrel 1 is tilted, the pair of supporting portions 6a, 6a serve as guides for the projecting piece 5 to stabilize the swing by pivotally supporting the supporting member 6 by the transverse supporting shafts 7 intersecting each other. It was done in the state. However, the support portions 6a, 6a forming the projecting piece 5 and the support member 6 do not necessarily have to be shaped plates, and may be round bars or other shapes.

In this case, the center of gravity of the barrel 1 is stable in a state where the center of gravity of the barrel 1 is tilted to the lower tilting position side of the support shaft 7. Therefore, when the barrel 1 rotates, as shown in FIG. 3, when it comes to the center line side of the barrel 1, that is, when the center of gravity of the barrel 1 comes above the support shaft 7, the barrel 1 is again drawn. As shown in FIG. 1, the support shaft 7 rapidly swings toward the tilted position. As described above, this tilting swing is caused by the rotation of the support shaft 7 immediately after the axis of the support shaft 7 is oriented vertically during one rotation of the barrel.
Occurs twice. At this time, a sudden force in the radial direction of rotation of the barrel 1 acts on a group of workpieces in the barrel 1 that is about to rotate as the barrel 1 rotates, and this force causes the workpieces to easily adhere to the inner wall surface of the barrel 1. Can be prevented from adhering to the inner wall surface of the workpiece, the contact of the workpiece with the treatment liquid becomes non-uniform, and it is possible to prevent problems such as unevenness in the treatment. It is possible to promote displacement of the position, especially when the surface treatment is plating treatment,
It is also possible to prevent the work pieces from being agglomerated and plated.

FIG. 8 shows a variable speed electric motor provided on the upper side of the frame 4 in the tilting direction. The rotary shaft 2 is interlocked with the electric motor 8 through a gear train 9 including the gear 9a. The rotating shaft 2, that is, the barrel 1 is, for example, 30 minutes per minute.
I tried to give a gentle rotation of about once. Reference numeral 10 denotes a disc attached to the bottom surface of the barrel via a flange 1c,
When the barrel 1 tilts, the lower surface of the disc 10 is moved to the gear 9
stoppers 11 provided on both sides of the support shaft 7 on the upper surface of a,
The tilt angle of the barrel 1 is regulated by alternately supporting the upper end of the barrel 11. In addition, 1b is an innumerable liquid passage hole provided in the peripheral side wall surface of the barrel 1, and 12 is an electrode used when a plating process is performed. Further, although not shown, by forming the inner wall surface on the circumferential side of the barrel 1 into a concavo-convex surface that is orthogonal to the rotation direction thereof, it is possible to promote work reversal and perform more effective stirring of the work in the barrel.

4 to 7 show another embodiment. In this embodiment, as a means for rotatably supporting the barrel 1 on the rotary shaft 2, a universal joint 13 is interposed between the center of the bottom surface of the barrel 1 and the upper end of the rotary shaft 2 to support them. As a swinging means for connecting and swinging the barrel 1 to the rotation center line side and the tilting position side that tilts with respect to the rotation center line side, the barrel 1 is provided at the lower end, along the circumferential direction of the peripheral edge of the disk 14b, and The cam 14 is provided with a cam surface 14a which projects downward and guides the barrel 1 along the extension line position side of the rotation shaft 2 and the tilt position position side deviated from the rotation center line. Pin-shaped engaging elements 15 that act on the cam surface 14a of the cam 14 are projected from the left and right below and below the supporting position of the shaft 2 to guide the barrel 1 to the cam surface 14a during its rotation. The rotation center line is the extension of the rotation shaft 2. And so as to swing to swing over to the position side and coming out was tilted position. However, it goes without saying that the same operation can be performed even if the cam 14 is provided on the frame 4 side and the engaging element 15 that engages with the cam surface 14a is provided on the barrel 1 side.

In this case, when the barrel 15 rotates to engage the downwardly projecting portion of the cam surface 14a with the rotation of the barrel 1, the barrel 1 rotates as shown by the solid line in FIG. The center line is located above the extension line of the rotary shaft 2. On the other hand, when the barrel 1 comes into a state of acting on the recessed portion of the cam surface 14a by the rotation of the barrel 1, the rotation center line of the barrel 1 tilts toward the tilt position side as shown by a virtual line in FIG. The engaging element 1 is provided at a portion protruding downward of the cam surface 14a.
When 5 is engaged, the barrel 1 has its center of rotation located above the extension of the axis of rotation 2 and is provided with four sawtooth-shaped irregularities, in this embodiment the barrel 1
Repeats this operation four times during its one revolution. The cam 14 is not limited to the one described above, and the rotation center line of the cam 14 is guided to the extension line position side of the rotation shaft 2 and the tilt position position side deviated from the rotation center line. It is sufficient if it has a configuration that allows it. For example, it is needless to say that a grooved cam may be used, a real cam may be used, or the like. In this embodiment, except for the points described above, the other structure is not particularly different from the structure shown in the previous embodiment shown in FIGS.

[0011]

According to the invention of claim 1, while the barrel is rotating, the barrel repeats the operations of tilting and oscillating to the upper side of the extension line of the rotary shaft and the tilting position side by its own weight, so that the barrel is rotated. A sudden force in the radial direction of the barrel acts on the work group in the barrel that is about to rotate, and that force can prevent the work from adhering to the inner wall surface of the barrel. It is possible to eliminate problems such as uneven contact with the liquid and uneven processing, and it is possible to promote displacement of the positions of the workpieces in the barrel, especially when the surface treatment is plating, It is also possible to eliminate the problem of plating as a lump. According to the invention of claim 2, the effect of claim 1 can be obtained with a simple configuration. Claim 3
According to the invention of (1), by changing the shape of the cam surface of the cam, the number of swings of the barrel during one rotation can be changed, and the above-mentioned effect is brought about.

[Brief description of drawings]

FIG. 1 is a side view showing an example of an embodiment of the present invention.

FIG. 2 is a YY line view in which a part of FIG. 1 is omitted.

FIG. 3 is a side view of a main part when it is on the center line side of the barrel.

FIG. 4 is a side view of a main part in which a part of another embodiment is cut off.

FIG. 5 is a roro view of FIG.

FIG. 6 is a view from the line of FIG.

FIG. 7 is a perspective view of a cam.

FIG. 8 is a side view of a conventional barrel device.

[Explanation of symbols]

1 barrel 2 rotation axes 4 frame 5 protrusions 7 Support shaft 14 cams 15 Engagement element

Claims (3)

[Claims] 1. A barrel apparatus comprising: a barrel having a work inlet / outlet opening on its upper surface, the lower end of the barrel being supported by a rotating shaft inclined with respect to a vertical line, and rotating around a rotation center line inclined with respect to the vertical line. A barrel for pivotally supporting the barrel about a rotation shaft and for swinging the barrel between a rotation center line side and a tilting position side tilted with respect to the rotation center line side. apparatus. 2. The barrel device according to claim 1, wherein the barrel is tiltably supported by the rotary shaft, and the barrel is swung to a rotation center line side and a tilting position side tilted with respect to the rotation center line side. As the swinging means, a projecting piece projecting downward from the central position of the bottom surface of the barrel is pivotally supported by a lateral supporting shaft on a supporting member projecting above the upper end of the rotating shaft. Barrel device. 3. The barrel device according to claim 1, wherein the barrel is tiltably supported by the rotary shaft.
A universal joint is interposed between the lower surface of the center of the barrel and the upper end of the rotary shaft to swing the barrel to the rotation center line side and the tilt position side that tilts with respect to the rotation center line side.
Any one of a cam having a cam surface for guiding the rotation center line of the barrel over the extension line position side of the rotation shaft and the tilt position position side deviating from the extension line position side, and an engagement element acting on the cam surface,
A barrel device, wherein the frame supporting the rotating shaft is provided with the other on the barrel side.