JPS5830114B2 - Equipment for spray blasting the surface of treated materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for blasting the surface of a material to be treated, and more specifically, an apparatus for blasting the surface of a material to be treated or a mechanical part using solid particles. Regarding.

INDUSTRIAL APPLICABILITY The present invention is very effective when performing deburring, surface matting, or surface decoration in the production of various processed materials and machine parts made of metal or non-ferrous metals.

A device for blasting the surface of a material to be treated using solid particles to remove metal mechanical parts is disclosed, for example, in German Publication No. 2605342, and the blasting device described therein is It has a turntable on which a material to be treated is mounted inside the chamber, a nozzle for spraying solid particles onto the material to be treated, and a swinging means for swinging the nozzle in a vertical plane, and a geometrical angle of the nozzle. The axis of is perpendicular to the turntable surface.

In this device, metal particles are used as solid particles, and the center of swing of the nozzle in a vertical plane is located above the turntable surface.

In the above-mentioned known blast processing apparatus, solid particles are supplied from a storage via piping to a nozzle, and are sprayed from the nozzle onto a material to be treated on a rotating turntable.

By changing the inclination angle of the nozzle posture in the vertical plane, the angle at which solid particles are sprayed onto the surface of the treated material can be changed.3 However, in such conventional equipment, the nozzle in the vertical plane Since the center of oscillation is above the turntable surface, the inclination angle of the nozzle cannot be made very large when the nozzle oscillates.

That is, if the inclination angle of the nozzle is made too large, the jetting direction of the nozzle will be directed outward away from the turntable, and solid particles will no longer be sprayed onto the turntable.

For this reason, the upper surface and the side surface of the material to be treated cannot be efficiently blasted at the same time, and the material to be treated must be replaced frequently, especially for side surface treatment.

In addition, since the center of nozzle swing is above the turntable, the distance between the nozzle and the surface of the material to be treated changes as the nozzle swings, and the intensity of the solid particles sprayed changes, resulting in uniform and good blasting. Can not.

An object of the present invention is to simultaneously blast the entire surface of the treated material other than the surface in contact with the turntable without repositioning the treated material on the turntable when blasting the surface of the treated material with solid particles. An object of the present invention is to provide a surface blasting device capable of performing blasting by spraying particles.

In order to achieve this object, the surface blasting apparatus according to the present invention has a turntable on which a material to be treated is mounted inside a processing chamber, and a nozzle for spraying solid particles onto the material to be treated, and the nozzle is connected to a vertical plane. A solid particle to be treated is provided with a swinging mechanism for swinging the nozzle in the turntable, and a bracket supporting the nozzle, which has a geometrical axis perpendicular to the turntable surface on the output shaft of the swinging mechanism, is fixed. In the material surface blowing f = tl + blasting equipment, the above-mentioned nozzles are composed of at least one pair of nozzles arranged along one circle, and the geometrical axis of each nozzle is aligned with the geometrical axis of the bracket of each nozzle. The bracket is arranged so that its swing axis is included in the same plane as the top surface of the turntable.

By placing the nozzle's geometric axis in the same plane as the respective bracket's geometric axis, when the bracket swings symmetrically about the vertical axis, the nozzle also swings and turns. If the workpiece at a position offset from the rotation center of the table rotates 3600 times together with the turntable, both opposing sides of each workpiece will be uniformly blasted.

By arranging at least two nozzles along one circle, the turntable rotates through 90° and as the bracket swings symmetrically about the vertical axis, it covers all sides of the workpiece. Blasting is possible.

By placing the swing axis of the bracket in the same plane as the operating surface (top surface) of the turntable, the center of the spray of solid particles on the turntable can be kept at a constant position regardless of the angle of inclination of the bracket. The distance from the nozzle to the material to be treated can also be kept constant.

Therefore, even if the angle of inclination of the nozzle with respect to the turntable surface changes, the strength of the solid particles sprayed onto the workpiece remains constant on both the horizontal and vertical surfaces, allowing for good blasting of the workpiece.

Furthermore, with the apparatus according to the present invention, the entire surface of the material to be treated other than the surface in contact with the turntable can be treated at the same time,
Once the material to be processed is set on the table, there is no need to rearrange it.

In order to prevent the spraying of the nozzle from deviating from the area during which the material to be treated is rotated by the turntable, the circle in which the nozzle is arranged is arranged so that its center coincides with the center of rotation of the turntable.

In order to more uniformly blast the side surface of the material to be treated with solid particles, each pair of nozzles is preferably spaced apart by an arc interval corresponding to a central angle of 900 degrees.

The present invention will be explained in detail below with reference to the drawings.

The blasting equipment used for spraying the surface of the treated material with solid particles shown in the drawing can be used for scraping metal mechanical parts, matting the treated material made of thermosetting resin, or treating the treated material made of metal or plastic. Can be used for surface decoration etc.

When blasting metal objects such as handles, flanges, flanges, etc., metal particles or thin glass spheres are used as solid particles for blasting.

When blasting materials molded with thermosetting resin, such as frames, boards, and panels, the solid particles may be plastic balls or crushed plum or apricot seeds.

When polishing a material made of metal or plastic for surface decoration, the solid particles may be small glass particles or quartz sand.

The figure shows an embodiment of the apparatus of the present invention for matting a material molded with a thermosetting resin, and in this case the solid particles are crushed plum or apricot seeds.

The apparatus shown in Fig. 1, which uses solid particles to blast the surface of a material to be treated, has a flange 1, inside which is a processing chamber 2. A piping 2' for communicating the ventilation system and the processing chamber 2 is connected thereto.

Inside the processing chamber 2 there are 1. A turntable 3 rotated by a drive source 4 is installed, and this turntable 3 supports a material 5 to be processed thereon.

The turntable 3 is, for example, a punched disk, and is fixed on the drive shaft 4' of the drive source 4.

A jet blast nozzle 6 is provided in the treatment chamber 2 for spraying solid particles towards the material 5 to be treated.

The device is further provided with a mechanism for swinging the nozzles 6 in a vertical plane, the mechanism having an output shaft 11 to which a bracket 7 supporting each nozzle 6 is fixed, and a geometrical axis of the nozzle 6. σ is perpendicular to the surface of the turntable 30.

The nozzles 6 are arranged along a circle whose center coincides with the center of rotation of the turntable 30.

Furthermore, the nozzles 6 are arranged such that their geometric axis C lies in the same plane as the geometric axis 7' of the bracket 7 of each nozzle 6.

The number of nozzles 6 for spraying solid particles onto the material to be treated is selected so that the solid particles sprayed from the nozzles 6 cover the entire operating area (used portion) of the turntable 3.

Fig. 4 shows a turntable 30 with a blasting nozzle 6.
The spraying of solid particles on the surface shows spot 8.

In this figure, the nozzle 6 and the material to be treated 5 are not shown.

This device has at least one pair of nozzles 6, and the number of nozzles 6 must be an even number.

Each pair of nozzles 6 is arranged along a circle of the same radius, and the third
As shown in the figure and FIG. 4, it is arranged on a circular arc having a central angle of 900 degrees.

Nozzle 6 communicates with pipes 9 and 10 for supplying compressed air and solid particles, respectively.

The bracket 7 is hollow, and the pipes 9 and 10 pass through the bracket 7.

The flange 7 is fixed to an output shaft 11 of a swing mechanism 12 for swinging the nozzle 6 in a vertical plane.

In the embodiment shown, the bracket 7 is arranged such that its pivot axis γ", which intersects the geometrical axis T, lies in the same plane as the operating plane (upper surface) of the turntable 3.

The swinging mechanism 12 of the nozzle 6 is equipped with an air cylinder and a crank guide mechanism (not shown), so that the bracket 7 supporting the nozzle 6 swings in a vertical plane, and the nozzle 6 swings within a wide range of 00 to 45 degrees. The inclination angle of is adjusted.

The solid particles are supplied from the reservoir 14 to the nozzle 6 via pipes 13 and 10.

A vibrating sieve 15 is provided below the processing chamber 2 to separate solid particles from waste generated in the processing process, and the separated solid particles are returned to the storage 14 via an outlet trough 16.

The operation of the above-mentioned constituent devices will be explained in detail below.

Before starting the operation, the material to be processed 5 is set on the turntable 3.

Next, turn the turntable 3.

The drive source 4 is started to start the operation of this device.

As soon as the drive source 4 for rotating the turntable 3 is started, compressed air is sent to the nozzle 6 via the pipe 9, whereby the solid particles are removed from the reservoir 14 to the pipes 13, 1.
0 into the nozzle 6, which sprays the solid particles onto the material 5 to be treated.

Dust generated during the processing is sucked out from the processing chamber 2 via a pipe 2' by a ventilation system.

When the treatment is finished, the solid particles flow down from the treatment chamber 2 into the vibrating sieve 15, which separates the solid particles from the waste generated during the treatment.

The solid particles screened out in this way flow down from the sieve 15 via the outlet trough 16 into the storage 14 and are then fed from the storage into the processing chamber 2 again.

While the material to be processed 5 is being processed in the processing chamber 2, the bracket 7 supporting the nozzle 6 swings within a vertical plane.

The swinging motion of the bracket 7 may be continuous or intermittent, or may be caused to swing according to a program predetermined in time by a program control device (not shown).

If the workpiece 5 is in position A in FIG. 3 and the bracket 7 supporting the nozzle 6 is in position a or position C in FIG. The surface is treated by spraying with the nozzles 6 on the left side of FIG.

When the material 5 to be treated comes to the position B shown in FIG. 3, the nozzle 6
If the bracket 7 supporting the is in the same position a or C in FIG. 1, the workpiece 5 has been rotated by 900 degrees from the above-mentioned position by 30 rotations of the turntable, so the nozzle 6 on the right side in FIG. The top horizontal surface and two other side surfaces of the material 5 to be treated are treated.

If the bracket 7 supporting the nozzle 6 comes within the position,
The solid particles are sprayed to treat the upper horizontal surface of the material 5 to be treated.

In this manner, when the turntable 3 makes one complete rotation, all surfaces of the material 5 to be treated other than the surface facing the turntable are blast-treated with solid particles.

When the treatment cycle time has elapsed, the supply of compressed air and solid particles to the nozzles 6 via the pipes 13 and 10 is interrupted, the drive source 4 of the turntable 3 is stopped, and the nozzles 6
The swinging motion of the bracket 7 that supports it stops.

The treated material 5 is removed from the processing chamber 2 and the untreated material is placed in its place before the processing cycle is restarted.

[Brief explanation of drawings]

Fig. 1 is an explanatory cross-sectional view of an apparatus for blasting the surface of a material to be treated with solid particles of the present invention, and Fig. 2 is an explanatory cross-sectional view of an apparatus for blasting the surface of a material to be treated with solid particles of the present invention.
3 is a sectional view taken along the line III--III of FIG. 1, and FIG. 4 is an explanatory plan view showing the state in which solid particles are sprayed onto the surface of the table. In addition, 1 is the housing, 2 is the processing chamber, 2', 9°10.1
3 is piping, 3 is a turntable, 4 is a drive source, 4' is a drive shaft, 5 is a material to be treated, 6 is a nozzle, 6' and 7' are geometrical axes, 7 is a bracket, 7" is the swing axis, 8 is the spot, 11 is the output shaft, 14 is the storage area, 15 is the sieve, 16
indicate the outlet gutter.

Claims (1)

[Scope of Claims] 1. A turntable on which a material to be processed is mounted inside a processing chamber and a nozzle for spraying solid particles onto the material to be processed, and a swinging device for swinging the nozzle in a vertical plane. The surface of the material to be treated is sprayed by solid particles attached to a bracket supporting the nozzle, which has a geometrical axis perpendicular to the turntable surface on the output shaft of the swinging mechanism. , said nozzles consist of at least one pair of nozzles 6 arranged along a circle, the geometrical axis 6' of which is in the same plane as the geometrical axis 7' of the bracket 7 of each nozzle 6. An apparatus for spray blasting the surface of a material to be treated, characterized in that the bracket 7 is arranged so that its swing axis 1'' is included in the same plane as the upper surface of the turntable 3.2. An apparatus for blasting the surface of a material to be treated, characterized in that the center of the circle in which the nozzle 6 is arranged coincides with the rotation center of the turntable 30. 3. The apparatus according to claim 1 or 2, characterized in that the nozzles 6 in each pair are spaced apart by an arc interval with a center angle of 90°, for spraying the surface of a material to be treated. is a device for blasting.