JPS6352970A - Automatic surface treating device - Google Patents

Abstract

PURPOSE:To make it possible to remove scales or the like in a short time in a bead blast treatment process for small size parts such as bolts or the like, by jetting cleaning particles from a nozzle while a plurality of holders to which workpieces to be treated are set, are rotated. CONSTITUTION:Workpieces W to be treated, such as spring screws or the like are pushed into holders, respectively, from the outside thereof and are therefore set, and a nozzle 25 is opposed to the workpieces, orthogonal thereto, by operat ing a cylinder 28. Further, a flat plate 5 and a motor 7 are slid by a cylinder 6 to engage clutches 19, 17 so that a holder 16 is rotated by means of a motor 7. Simultaneously, glass beads are jetted from a nozzle 25 to remove dust, scales or the like stuck to the outer surface of the workpiece W. After comple tion of the treatment the clutches 19, 17 are released, and a disc 15 is rotated by a degree corresponding to one pitch of a holder 16 by a motor 7 through gears 14, 13 so that the clutches 19, 17 are engaged. Thus, the outer surfaces are similarly treated, successively. Thus, it is possible to automatically and uniformly carry out scale disposal.

Description

[Detailed Description of the Invention] "Industrial Application Field J The present invention relates to an automatic surface treatment device that can automatically apply surface treatment such as bead blasting to small parts such as bolts. .

``Prior art and its problems J For example, when attaching a spring to the upper nozzle of a fuel assembly loaded into a nuclear reactor, a 7'lf bolt (generally called a spring screw) is usually used. However, these bolts are heat-blasted after being formed in order to have strong resistance to stress corrosion cracking.

Conventionally, the above-mentioned bead blasting treatment for bolts involves manually inserting the bolts one by one into a chamber equipped with a bead-spraying nozzle, and rotating the bolt so that beads are jetted from the nozzle onto the entire surface of the bolt. It was done by guessing.

However, such manual work is inefficient, increases processing time, and increases costs.Furthermore, the finishing process varies depending on the worker, making it difficult to perform uniform processing. .

The present invention has been made in view of the above two circumstances, so it is possible to automatically perform bead blasting and other processes on small parts such as bolts, thereby shortening processing time, reducing costs, and improving uniformity. The purpose of this invention is to provide an automatic surface treatment device that can perform various treatments.

"Means for Solving Problems" The apparatus of the present invention includes a rotating disk, a plurality of holders provided at predetermined intervals in the circumferential direction on the outer periphery of the rotating disk, and a workpiece held by the holder. It is characterized by comprising cleaning particle injection nozzles arranged to face each other, a holder rotation mechanism that rotates a holder facing the nozzles, and a rotation mechanism that rotates the rotating disk intermittently.

"Operation" In processing objects to be processed, such as bolts, first, the objects to be processed are set in a plurality of holders.

Next, cleaning particles are ejected from the nozzle, and the object to be treated facing the nozzle is rotated together with the holder. In the following manner, scale, particles, and other waste matter adhering to the surface of the object to be treated are removed. At this point when the above process is finished, stop the jet from the nozzle, and
Stop the holder.

Next, the rotary disk is rotated by a predetermined angle by the rotation mechanism so that the next object to be processed faces the nozzle. and,
This object to be treated is also subjected to the same surface treatment as described above.

Thereafter, the above-described operations are repeated to automatically perform surface treatment on all the objects to be treated assembled on the rotary disk.

"Embodiment" An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 in the figure indicates a base, and a motor support stand 2 is fixed to the left end of the base 1 in the figure. The motor support stand 2 has two wooden legs 3.3 erected at a predetermined interval.
, a base 4 placed on top of the base 4, and a flat plate 5 placed slidably in directions A and B in the figure with respect to the base 4, and the flat plate 5 is provided on the base 4. It is designed to be slid by the cylinder 6. and,
A motor 7 is attached to the top of the flat plate 5.

A first support plate 8 is provided upright in the center of the base 1, and a shaft 9 is rotatably supported on the upper part of the support plate 8. The rotating shaft 9 is arranged concentrically with respect to the output shaft 7a of the motor 7, and is connected to the shaft 7a via a coupling 10.

A second support plate 11 is located at the right end of the base 1 in the figure.
are provided parallel to the support plate 8. A sleeve 12 is provided between the support plates 8 and 11 in parallel with the rotation axis 9 and is rotatable.

Gear 13 is located between the two supports of I2.
is attached, and this gear I3 is detachably engaged with a gear 14 attached to the tip of the jTI nE-shaft 9 in the B direction.

Further, a rotary disk 15 is provided on the end seat of the support plate 11 protruding from the support plate 11 in the B direction so as to be orthogonal to the shaft 12 and rotate integrally with the f+h I 2. A plurality of holders 16 for holding objects to be processed are provided on the outer periphery of the rotating disk I5, spaced at equal intervals in the circumferential direction, and with their central axes perpendicular to the rotating disk 15.

The holder I6 includes a female clutch half 17 rotatably supported in a hole of the rotary disk 15, and a female clutch half I7.
It is composed of a ring 18 that is fitted and fixed to the outer periphery of a protrusion that protrudes in direction B from a rotating disk 15.

In the figure, the female clutch half 17 is provided with a conical dI\17a at the center end in the direction direction, and a concave and convex portion 17b extending radially on the outside thereof. On the other hand, the male clutch half t, $19, which is provided at the end of the shaft 9 in the B direction and forms a clutch together with the clasody half 17, has a conical protrusion 19a in the center; A radially extending uneven portion +9b is provided on the outside thereof, and these correspond to the conical WJ I 7 a and the uneven portion +7b of the club cutter half 17, respectively. Further, an annular groove 18a is formed at a predetermined location on the inner circumference of the ring 18, and a holding member 20 made of an elastic material such as urethane rubber is fixed therein. That is, in the ring I8 of the holder I6,
The workpiece W, such as a spring screw, can be set by simply pushing it in from the outside.

Also, the tip end side of the axis I2 in the direction is 1lir+1! J
A disk 21 is attached to each end of the disk 21 so as to be perpendicular to the axis 12 (see FIG. 2). The outer periphery of the disk 21 is provided with an unevenness 121a, and the unevenness 21a is provided so as to match the mounting angle of the holder 16 provided on the rotating disk 15. Further, a sensor 22 made of, for example, a phototube is provided at a position facing the uneven portion 21a of the disk 2I, supported by a stay 23 extending from the leg 3, and thereby detects the rotational position of the disk 21, that is, the rotation position of the disk 21. The rotational position of the disc I5, which rotates integrally with the disc I5, can be detected.

Here, the motor 7, shaft 9, gear I4, gear I3, shaft 12, disk 2+, sensor 22, controller (not shown), etc. constitute a rotation mechanism that rotates the disk 15 intermittently, and Motor 7, shaft 9, clutch half-off I9.
17 constitutes a rotation mechanism that rotates the holder 16.

Further, the reference numeral 25 indicates a nozzle for spraying cleaning particles such as beads. By doing so, the holder I6 of the rotating disk 15
It is provided so as to face one of the objects W to be treated W held in the same direction, and so that the spraying angle can be varied with respect to the object W to be treated. Further, 28 is a puller for appropriately setting the spray angle of the nozzle 25.

Next, a method of bead blasting a workpiece W such as a spring scorch using the above-mentioned apparatus will be described.

In order to process a workpiece W such as a Sl knee spring screw, the workpiece W is first pushed into each holder 20 from the outside and set.

The S2 cylinder 28 is operated to set the nozzle 25 so as to be substantially orthogonal to the workpiece W, as shown by the solid line in FIG.

S3: Operate the cylinder 6 to slide the flat plate 5, motor 7, etc. in the direction B in the figure, and engage the clutch halves 19 and I7 with each other.

S4; With the clutch engaged and in the single state, the motor 7 is driven to rotate the holder I6 via the shaft 9 and the clutch half-off I9.17, and the workpiece W held by the holder I6 is rotated. Rotate.

S5: While rotating the workpiece W, glass beads are simultaneously jetted from the nozzle 25 to remove dust, scale, etc. attached to the surface of the workpiece W. The processing time is predetermined based on the amount of attached dust, the size of the object to be processed, etc.

S8: When the above process is completed, the motor 7 is stopped, and the injection of glass beads from the nozzle 25 is also stopped.

S7: Operate the cylinder 6 to slide the motor 7 and shaft 9 in the A direction, disengage the clutch halves 17 and 19, and engage the gear 1 = 1 with the gear 13.

S8: The motor 7 is driven to rotate the disk 15 by a predetermined angle via the shaft 9, gears 14, 13, etc., and the next object W to be processed is made to face the nozzle 25.

At this time, the angle of the disk 15 is determined by the sensor 22.
This can be easily detected by detecting the rotation of I.

S: With the new workpiece W facing the nozzle 25 as described above, the operations S to S7 are performed. The above operations are repeated to perform bead blasting on all the objects to be treated ~V held on the disk 15.

The above is a half cycle of processing for the object W held on the disk I5.

When the above operation is completed, the cylinder 28 is driven to change the set angle of the nozzle 25 with respect to the object W to be processed as shown by the two-dot chain line in the figure, and in this state, a foot-fixing operation is performed.

The process described above is one cycle, and by repeating this cycle, the heat blasting process for the object to be treated ~V is automatically performed.

In the above embodiment, glass beads are sprayed through the nozzle 25, but the pre-cleaning particles are not limited to glass beads, and sand or pond particles may also be used. .

Further, in the above embodiment, a common motor is used as a drive source to rotate the disk 15 and the holder I6, but separate motors may be provided for each.

"Effects of the Invention" According to the present invention, there is provided a rotating disk, a plurality of holders provided at predetermined intervals in the circumferential direction near the outer periphery Q of the rotating disk, and cleaning particles on the object to be processed held by the holder. Since it is equipped with a spray nozzle, a holder rotation mechanism that rotates the holder corresponding to the nozzle on the spot, and a rotary unit that rotates the rotating disk, it is possible to remove dust adhering to the surface of the workpiece. , scale, etc. can be automatically removed, and effects such as shortening of processing time, cost reduction, and uniform processing can be obtained.

[Brief explanation of drawings]

FIG. 1 is a side view of the entire apparatus showing an embodiment of the present invention, and FIG. 2 is a view taken in the direction of the arrow .lambda. in FIG. 5...disk, 16...holder, 17,
I9...Crudge half-off, 22...Sensor, 25...Nozzle, 28...Cylinder, W...Object to be processed.

Claims (1)

[Claims] A rotating disk, a plurality of holders provided at predetermined intervals in the circumferential direction on the outer periphery of the rotating disk, a cleaning particle injection nozzle provided so as to face a workpiece held by the holder, and the nozzle. An automatic surface treatment apparatus comprising: a holder rotation mechanism that rotates a holder facing the holder; and a rotation mechanism that intermittently rotates the rotating disk.