JPH08323630A - Blast equipment blasting material blowing device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a blasting equipment blasting device for blasting equipment, which is capable of efficiently blasting the blasting material accumulated in the concentric circular groove of a bracket-treated product with a simple mechanism. To do. [Structure] An air-rotating joint 14 is provided at a blow-down position of a blast cabinet 4, and the rotating portion 1 of the rotating joint 14 is provided.
6, blow-off nozzles 19 and 20 having different lengths are radially connected to each other, and the tips of the blow-off nozzles 19 and 20 are concentric circular grooves formed on the upper surface of the product W transferred downward. Blasting equipment blow-off device for blast equipment bent toward 9 and 10

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for blowing off shot material accumulated in a groove of a blast-processed product so as not to be taken out of the blast equipment together with the product.

[0002]

2. Description of the Related Art An apparatus for blowing off a projection material deposited on a conventionally blasted product by blowing air is disclosed in JP-A-49-16092 and JP-A-4-256578. It is known. However, if the product to be blasted is a forged part that is used for automobile missions and has concentric circular grooves on its upper surface, use the projection material collected in the concentric circular grooves. In order to blow off, it is necessary to arrange a large number of blowout nozzles in a narrow place, and there is a problem that the installation space is taken up or assembly becomes large. The present invention has been made in view of the above problems, and an object of the present invention is to provide an apparatus capable of efficiently blowing down the shot material accumulated in the concentric circular groove of the blasting product by a simple mechanism.

[0003]

In order to achieve the above object, a blasting equipment blow-off device for blast equipment according to the present invention has an air-rotating joint disposed at a position above and in front of a product carrying-out portion of a blasting cabinet. A fixed portion of the air-rotary joint is connected to a compressed air supply pipe, and a plurality of blow-off nozzles of different lengths are radially connected to the rotary portion of the air-rotary joint via a bracket, and a tip portion of the nozzle is connected. Is bent toward a concentric circular groove formed on the upper surface of the product transferred downward.

[0004]

According to the present invention, by adopting the above-mentioned solution means, when the blasted processed product having the concentric circular groove on the upper surface is transferred, the compressed air is supplied through the compressed air supply pipe. -Is supplied to the air-rotary joint, blown off from the rotary part of the rotary joint and sent to the nozzle, and the compressed air is jetted toward the concentric circular groove of the processed product, and the air is rotated by the reaction of this air-jet force. The rotating part of the joint is rotated and the tip of each blow-off nozzle is rotated along the concentric circular groove of the processed product to blow off the shot material in the concentric circular groove.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 and FIG. 2 show the overall outline of the blast equipment. A centrifugal projector 3.3 that configures a product loading section 1 and a product unloading section 2 on the front side and projects projection material on the rear side 3.3.
A rotating shaft 5 is rotatably erected at the center of a blasting cabinet 4 provided with, and the rotating shaft 5 is engaged with and connected to a rotary drive device 6 provided on the ceiling of the cabinet 4. It is configured to rotate intermittently. A disk table 7 is fixed to an intermediate position of the rotary shaft 5, and a rotation (not shown) at a position corresponding to the centrifugal projector 3.3 in the cabinet 4 is provided on a peripheral portion of the disk table 7. A large number of small tables 8 which are rotated by being engaged with the drive mechanism are arranged. It should be noted that, of the large number of small tables 8, the one located on the foremost side of the cabinet 4 is arranged in the product carry-in section 1 and the product carry-out section 2. On the upper portion of each small table 8, a protrusion 8A is provided in the center so that a product W (see FIG. 3) having concentric circular grooves 9 and 10 on its upper surface is placed at a predetermined position. Further the cabinet 4
A projecting material blowing device R is provided at the ceiling portion at a position one step before the product unloading portion 2 (hereinafter referred to as a blowing position).

Next, the blast material blowing device R will be described with reference to FIGS. 3 and 4. A cylindrical body 12 is erected on the upper portion of the ceiling frame 4A of the cabinet 4 so as to communicate with the inside of the cabinet 4, and the upper end of the cylindrical body 12 is attached to the mounting plate 1.
It is sealed by 3. A fixed portion 15 of an air-rotary joint 14 is vertically penetrated and attached to the mounting plate 13, and a rotary portion 16 of the air-rotary joint 14 is attached to the cylindrical body 1.
It penetrates through 2 and is projected into the cabinet 4. A partition disk 17 that slides and rotates with respect to the inner surface of the cylindrical body 12 is attached to a position inside the cylindrical body 12 of the rotary portion 16 of the rotary joint 14, and a box is provided below the partition disk 17. A bracket 18 having a rectangular shape is suspended so as to surround the lower portion of the rotating portion 16.

Blow-off nozzles 19 and 20 of different lengths (two pairs) supported by penetrating the box-shaped bracket 18 are radially connected to the lower end side of the rotary portion 16 of the rotary joint 14. The blow-off nozzles 19 and 20 are connected, and the tips of the blow-off nozzles 19 and 20 are bent downward toward the concentric circular grooves 9 and 10 of the product W transferred to the blow-off position. The bending angle of the blow-off nozzles 19 and 20 is set to a blowing angle slightly deviated from the vertical state with respect to the concentric circular grooves 9 and 10. Further, the fixed portion 15 of the rotary joint 14 has a compressed air supply pipe 22.
When the compression air is supplied, it blows off from the rotary joint 14, reaches the nozzles 19 and 20, and is jetted toward the concentric circular grooves 9 and 10 of the product W. The rotating portion 16 of the rotary joint 14 is rotated by the reaction of the above, and the blow-off nozzles 19 and 20 are rotated along the concentric circular grooves 9 and 10. Also, the mounting plate 13
Air pipe 23 branched from compressed air supply pipe 22
Partition plates 17 in the cylindrical body 12 are connected to each other.
The compressed air is supplied to the upper part of the table, and the supplied compressed air is jetted from the gap between the partition disk 17 and the inner surface of the cylindrical body 12 toward the cabinet, and the projection material jumps in. Is configured to prevent
The rotation speed of the rotating portion 16 of the rotary joint 14 is determined by the bending angle of the tips of the blow-off nozzles 19, 20, 21 and the pressure adjustment of the supplied compression air.

With the above-mentioned structure, the product carry-in section 1 is driven while the centrifugal projector 3.3 is driven and the disc table 7 is intermittently rotated in the direction of the arrow in FIG. Unprocessed product W in small table 8
The product W is placed on the centrifugal projector 3.3 and the product W is rotated together with the small table 8 while the side surface is blasted, and the concentric circular grooves 9, 10, 11 are blown at the blow-off position. A series of work is performed in which the shot material accumulated in the above is blown off and transferred to the product unloading section 2 to take out the product W. The blown-off condition of the shot material at the blow-off position in this step will be described in detail. The compression air is supplied to the rotary joint 14 via the compressed air supply pipe 22 and blows off the nozzles 19, 2.
When injected from 0, it receives a reaction and blows off together with the rotary joint 14, and the nozzles 19 and 20 are respectively rotated to inject the compression air while drawing two or more kinds of circular loci. In this state, when the product W in which the projection material is stored in the concentric circular grooves 9 and 10 formed on the upper surface is transferred to the blowing position by the rotation of the disk table 7, the blowing nozzles 19 and 20 blow it. The jetted compression air is blown while moving along the concentric circular grooves 9 and 10, and the shot material accumulated is blown off efficiently.

[0009]

As is apparent from the above description, the present invention provides an air-rotary joint at the blow-down position of the blast cabinet, and radially connects blow-off nozzles of different lengths to the rotary portion of the rotary joint. The tip of each blow-off nozzle,
Since the structure is such that it is bent toward the concentric circular groove formed on the upper surface of the product conveyed downward, the blow-off nozzle is compressed while rotating along the concentric circular groove of the product. It is possible to spray the blasting material that has accumulated in the concentric circular grooves more efficiently, and it is possible to reduce the number of nozzles installed by blowing down compared to the conventional one and the amount of compression air used. There are various effects such as reduction.

[Brief description of drawings]

FIG. 1 is a front view showing an outline of blast equipment.

FIG. 2 is a view on arrow AA in FIG.

FIG. 3 is an enlarged sectional view of a C part in FIG.

FIG. 4 is a view as seen from the arrow BB in FIG.

[Explanation of symbols]

 4 Blast cabinet W product 9 10 Concentric circular groove 14 Air-rotating joint 15 Fixed part 16 Rotating part 18 Bracket 19 20 Blow-down nozzle 22 Compressed air supply pipe

Claims (2)

[Claims] 1. An air-rotating joint 14 is disposed at a position above and in front of a product unloading portion of a blast cabinet 4, and a fixed portion 15 of the air-rotating joint 14 is connected to a compressed air supply pipe 22 for communication therewith. A plurality of blow-off nozzles 19 and 20 having different lengths are radially connected to the rotary portion 16 of the air-rotary joint 14 via a bracket 18, and the blow-off nozzle 1
Blasting equipment blow-off device for blasting equipment, characterized in that the tips of 9, 20 are bent toward concentric circular grooves 9, 10 formed on the upper surface of a product W conveyed downward. 2. The tip of the blow-off nozzles 19, 20 is bent at a blow angle slightly deviated from the vertical with respect to the concentric circular grooves 9, 10 of the product W. Blast equipment blowing material blow-off device described in 1.