JP2008194781A - Centrifugal type abrasive grain projection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a centrifugal type abrasive grain projection device equipped with a liner mechanism capable of totally miniaturizing when two or more impellers are juxtaposed and used. <P>SOLUTION: The centrifugal type abrasive grain projection device is equipped with two or more impellers 1 disposed at a predetermined interval, and a liner mechanism 2 surrounding two or more impellers. The liner mechanism is formed to be a box shape composed of a plurality of plate-shape liners 6, 7, 8, 9 which are mutually detachable at the side part or the end part, and is provided with a through-hole 10 of a hub for mounting the impeller, a projection port 11 of the abrasive grains and a supply port 12 of the abrasive grains to the impeller. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a centrifugal abrasive grain projection device that projects abrasive grains using centrifugal force.

Conventionally, as one of the devices of this type, an impeller, an impeller cover surrounding the impeller, and a liner attached to the impeller cover, the impeller cover includes left and right first and second side covers, The liner includes a front / rear cover and an openable / closable ceiling lid, and the liner has a through-hole that is detachably attached to the impeller cover with a screw and penetrates the impeller rotation shaft and the impeller side plate. First and second side liners, front and hub side liners that are pressed and fixed to end faces of the first and second side liners and formed in a U-shaped cross section, the first and second side liners, and the front An assembly frame liner that is detachably fitted and placed on the upper end of the hub side liner, and a ceiling side liner that is detachably placed on the assembly frame liner, A labyrinth structure having four or more bending points with respect to the projection direction of the projection material is provided on the mating surface between the ceiling side liner and the first and second side liners, and the ceiling side liner is attached to the impeller cover. There is one that can be pressed and fixed by an attached fixing means.
JP 2002-11668 A

However, the conventional centrifugal abrasive grain projection device configured as described above generally has a structure in which one impeller is surrounded by one impeller cover with a liner. Therefore, when a plurality of centrifugal abrasive projection devices are arranged in the projection direction of the abrasive grains and a product having a wide surface to be processed such as a steel plate is processed, for example, these centrifugal abrasive projection devices are installed. A large area and space are required, and along with this, there has been a problem that the shot blasting equipment provided with a plurality of centrifugal abrasive projection devices becomes large and expensive.

The present invention has been made in view of the above circumstances, and its object is to provide a centrifugal abrasive grain projection apparatus having a liner mechanism that can be reduced in size when two or more impellers are used side by side. Is to provide.

In order to achieve the above object, the centrifugal abrasive grain projecting apparatus in the invention is a centrifugal abrasive grain projecting apparatus that projects abrasive grains by utilizing centrifugal force, and is arranged in a line with a predetermined interval. The above impeller and a liner mechanism that surrounds the two or more impellers are provided.
Formed in a box formed by a plurality of plate-like liners that can be attached to and detached from each other at the side or at the end thereof, and the through-hole of the hub for mounting the impeller, the projection port for abrasive grains, and the impeller It has the supply port of an abrasive grain, It is characterized by the above-mentioned.

Note that the two or more impellers in the present invention are a horizontal direction, a vertical direction, or a direction inclined with respect to one of these two directions, and are linear or stepped along the projection direction of the abrasive grains. Thus, they are arranged side by side with a required interval.
In addition, the liner mechanism according to the present invention may be provided with a partition liner that partitions each impeller in a space that houses two or more impellers.

The liner mechanism according to the present invention includes the same number of ceiling liner groups as the impellers, supply port side liners suspended from the supply port side of each ceiling liner of the ceiling liner group, and each ceiling of the ceiling liner group. A structure including a hub side liner suspended from the hub side of the liner, and two side liners respectively attached to both ends of the ceiling liner group, the supply port side liner group, and the hub side liner group. Good.

In addition, the liner mechanism according to the present invention forms a recess and a cross-section that can be fitted to each other at a portion where the liners are joined to each other, or a stepped portion that can be engaged with each other. It is desirable to make it possible to prevent the projected abrasive grains from jumping out.

In addition, the partition liner of the liner mechanism according to the present invention includes a ceiling piece, a supply port side piece suspended from the supply port side of the ceiling piece, a hub side piece suspended from the hub side of the ceiling piece, and a supply port side You may comprise by the partition piece integrally provided in the piece or the hub side piece.
In addition, the supply port side liner and the hub side liner of the liner mechanism according to the present invention may be divided into two or more based on the center line to facilitate assembly and manufacture.
In addition, in the present invention, it is preferable that two of the two or more impellers that make a pair rotate inward so as to project the abrasive grains in a direction facing each other.

As is clear from the above description, the present invention is a centrifugal abrasive grain projection device for projecting abrasive grains by utilizing centrifugal force, two or more impellers arranged side by side at a predetermined interval, and these A liner mechanism that encloses two or more impellers, and the liner mechanism has a box shape constituted by a plurality of plate-like liners that can be attached to and detached from each other at the side portion or the end portion thereof, and Since it has a through hole in the hub for mounting the impeller, an abrasive projection port, and an abrasive supply port to the impeller, when using two or more impellers side by side, the centrifugal abrasive projection device is entirely small Excellent practical effects such as being able to be realized.

An embodiment of a centrifugal abrasive grain projection device to which the present invention is applied will be described in detail with reference to FIGS. As shown in FIG. 1, the centrifugal abrasive grain projecting apparatus includes two impellers 1, 1 arranged at a predetermined interval and arranged on the left and right sides, and a liner mechanism 2 that surrounds the two impellers 1, 1. And an impeller cover 3 surrounding the liner mechanism 2. The liner mechanism 2 is detachably attached to the inner surface of the impeller cover 3 via bolts (not shown) that penetrate the side plates of the impeller cover 3. Further, as shown in FIG. 2, the impeller 1 is attached to a hub 4, and the hub 4 is fitted to the left part of a rotating shaft 5 that is rotatably supported and directed in the left-right direction.

  Further, as shown in FIGS. 3 and 4, the liner mechanism 2 includes two ceiling liners 6 and 6 as many as the impeller 1, and each ceiling liner 6 of the two ceiling liners 6 and 6. A supply port side liner 7 suspended from the supply port side, a hub side liner 8 suspended from the hub side of each ceiling liner 6 of the two ceiling liners 6 and 6, and the ceiling liners 6 and 6 group. , Two side liners 9 and 9 attached to both ends of the supply port side liners 7 and 7 group and the hub side liners 8 and 8 group, the ceiling liners 6 and 6 group, and the supply port side liner 7, respectively. -It is comprised with the partition liner 19 provided between 7 groups and each of the said hub side liners 8 and 8 groups. The liner mechanism 2 is provided with a through hole 10 of an impeller mounting hub, an abrasive projection port 11 and an abrasive supply port 12 to the impeller 1.

Further, the supply port side liner 7 and the hub side liner 8 are configured to be divided into four parts, upper and lower and left and right, respectively, based on the center line.
The partition liner 19 includes a ceiling piece 20, a supply port side piece 21 suspended from the ceiling piece 20, a hub side piece 22 suspended from the ceiling piece 20, and a hub. The partition piece 23 is provided integrally with the side piece 22. And in order to avoid one impeller 1 receiving the abrasive grain projected from the other impeller 1 in the two adjacent impellers 1 and 1, the lower end of the partition piece 23 is as shown in FIG. It is positioned below or on the tangent line L connecting the lower ends of the two rotation circles C and C drawn when the two impellers 1 and 1 rotate.
Further, as shown in FIG. 4, the various liners 6, 7, 8, and 9 are connected to each other at the joint portions to be joined with the cross-sectional concave portion 13 and the cross-sectional convex portion 14 that can be fitted to each other. It is formed in a stepped portion 15 that can be mated.

  In FIG. 2, reference numeral 16 denotes an introduction cylinder that is attached to the impeller cover 3 and introduces abrasive grains to the central portion of the impeller 1, and 17 is an impeller that is attached to the rotary shaft 5 and scatters the abrasive grains. Reference numeral 18 denotes a control gauge which is attached to the impeller cover 3 and controls the flow rate of abrasive grains to the impeller 1.

  When the abrasive grains are supplied from the respective introduction cylinders 16 to the respective impellers 17 with the two impellers 1 and 1 rotated in the direction of the arrows, the abrasive grains are impellers. After being scattered by 17, while being controlled by the control gauge 18, it is projected from the projection port 11 by the two rotating impellers 1 and 1.

  In the above-described embodiment, the impellers 1 and 1 are provided side by side. However, the impellers 1 and 1 are arranged in the vertical direction and the liner is in a state in which the above-described embodiment is rotated 90 degrees in a vertical plane. The mechanism 2 may extend in the vertical direction, or the impellers 1 and 1 may be arranged in a direction inclined with respect to either the horizontal direction or the vertical direction, and the liner mechanism 2 may extend in the inclined direction.

  In the above-described embodiment, the liner mechanism 2 is detachably attached to the inner surface of the impeller cover 3. However, the present invention is not limited to this. For example, the liner mechanism 2 is directly installed in the cabinet constituting the polishing chamber. Alternatively, it may be detachably attached.

It is a partial cross section front view of the principal part of one Example of the centrifugal abrasive grain projection apparatus to which this invention is applied. It is AA sectional drawing of FIG. It is a perspective view which displays the liner mechanism which is the principal part of this invention. FIG. 4 is an exploded view of the liner mechanism displayed in FIG. 3.

Explanation of symbols

2 Liner Mechanism 6 Ceiling Liner 7 Supply Port Side Liner 8 Hub Side Liner 9 Side Liner 10 Impeller Rotating Shaft Through-hole 11 Abrasive Grain Abrasive Projection Port 12 Abrasive Grain Supply Port

Claims (8)

A centrifugal abrasive grain projection device for projecting abrasive grains using centrifugal force,
Two or more impellers arranged side by side at the required intervals;
A liner mechanism surrounding these two or more impellers,
This liner mechanism
Formed in a box shape composed of a plurality of plate-like liners that can be attached to and detached from each other at the side portion or the end portion thereof, and to the through-hole of the hub for mounting the impeller, the abrasive projection port, and the impeller A centrifugal abrasive grain projection device comprising an abrasive grain supply port. In the centrifugal abrasive grain projection device according to claim 1,
The centrifugal abrasive grain projection device according to claim 1, wherein the liner mechanism is provided with a plate-like partition liner for partitioning each impeller in a space in which two or more impellers are stored. In the centrifugal abrasive grain projection device according to claim 1 or 2,
The liner mechanism has the same number of ceiling liner groups as the impellers, a supply port side liner suspended from the supply port side of each ceiling liner of the ceiling liner group, and a hub side of each ceiling liner of the ceiling liner group. Centrifugal abrasive grain projection comprising: a suspended hub side liner; and two side liners respectively attached to both ends of the ceiling liner group, the supply port side liner group, and the hub side liner group apparatus. In the centrifugal abrasive grain projection device according to any one of claims 1 to 3,
The liner mechanism is characterized in that a cross-sectional recess and a cross-sectional protrusion that can be fitted to each other, or a stepped portion that can be engaged with each other is formed at a portion where the liners are joined to each other. Projection device. In the centrifugal abrasive grain projection device according to any one of claims 1 to 4,
A centrifugal abrasive grain projection device characterized in that the liner mechanism is surrounded by an impeller cover. In the centrifugal abrasive grain projection device according to any one of claims 2 to 5,
The partition liner includes a ceiling piece, a supply port side piece suspended from a supply port side of the ceiling piece, a hub side piece suspended from a hub side of the ceiling piece, and the supply port side piece or the hub side. A centrifugal abrasive grain projection apparatus comprising a partition piece provided integrally with a piece. In the centrifugal abrasive grain projection device according to any one of claims 3 to 6,
The centrifugal abrasive grain projection device characterized in that the supply port side liner and the hub side liner can be divided into two or more based on the center line. In the centrifugal abrasive grain projection device according to any one of claims 1 to 7,
A centrifugal abrasive grain projection device characterized in that two impellers forming a pair among the two or more impellers rotate inward so as to project abrasive grains toward each other.