JPH06155303A - Inwall protective device of shot blast device - Google Patents

Abstract

PURPOSE:To enable protection of an inwall of a shot blast device by way of using a hot and discarding an expensive protective plate furnished with abrasion resistance by providing an adhesive layer to adhere the shot on the inner surface of a cabinet storing a work. CONSTITUTION:A shot blast device is provided with projection devices 2, 2 of a shot S on two upper and lower points on one side of a cabinet 1 storing a work W and a screw conveyor 3 to collect the shot projected at the work W and falling under the cabinet 1. In this case, all over the inner surface of an outer plate part 5 constituting a main body of the cabinet 1, a plural number of protective plates 6 are regularly arranged, and all over the inner surface of the protective plates 6, adhesive layers 7 as an inwall protective device are provided. At the time of projecting the shot S, the shot S rebounding on the work W is adhered on the whole surface of the adhesive layers 7, and thereafter, the scattering shot S is made to collide against the shot S on the adhesive layers 7 and fall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shot blasting device for projecting a shot such as a metal ball or sand onto a work.
The present invention relates to an inner wall protection device for a shot blasting device used to protect the inner wall of a cabinet containing a work.

[0002]

2. Description of the Related Art A shot blasting apparatus is provided, for example, as described in "Mechanical Engineering Handbook" (new edition) published on April 15, 1987 by the Japan Society of Mechanical Engineers, page B2-22. A work such as a cast product with sand is accommodated in a provided cabinet, and a shot of a metal ball, sand, or the like is projected onto the work from a projection device to remove sand from the work or clean the surface.

Conventionally, in such a shot blasting apparatus as described above, in order to protect the inner wall of the cabinet from a shot shot, a protective plate formed of a material having abrasion resistance is used for the inner wall.

[0004]

However, in the conventional shot blasting apparatus for protecting the inner wall of the cabinet in the above-mentioned shot blasting apparatus, a high-grade material is used as the protective plate having abrasion resistance. In addition, there is a problem that the protective plate itself becomes expensive because it needs to be subjected to heat treatment, etc., and it is necessary to replace the protective plate relatively frequently, which requires much labor. However, there has been a demand for improvement in terms of economics and maintenance.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above conventional circumstances, and an object of the present invention is to provide an inner wall protection device for a shot blasting device which can be obtained at a relatively low cost and which can be easily maintained and managed. I am trying.

[0006]

An inner wall protection device for a shot blasting apparatus according to the present invention is characterized in that in claim 1, an adhesive layer for adhering shots is provided on an inner surface of a cabinet for accommodating a work, and In claim 2, the adhesive layer is provided between the inner surface of the cabinet and a peeling layer, and these configurations serve as means for solving the problems.

[0007]

In the inner wall protection device of the shot blasting apparatus according to the first aspect of the present invention, the shot to be projected on the work is adhered to the adhesive layer provided on the inner surface of the cabinet, and the shot is continuously applied. Protects the inner wall of the cabinet from the shots that are projected.

Further, in the inner wall protection device of the shot blasting apparatus according to the second aspect of the present invention, by providing the peeling layer between the inner wall of the cabinet and the inner wall of the cabinet, the adhesive layer can be removed and the adhesive layer can be replaced. To facilitate.

[0009]

1 to 4 are views showing an embodiment of an inner wall protection device for a shot blasting apparatus according to claim 1 of the present invention.

As shown in FIG. 1, the shot blasting device includes a cabinet 1 for accommodating a work W, projection devices (for example, impellers) 2 and 2 for shots S provided at two upper and lower positions on one side of the cabinet 1, and a cabinet 1. Screw conveyor 3 for collecting shots S dropped from inside
Besides, a shot transfer device, a shot hopper, and the like (not shown) are provided.

The work W is, for example, a cast product,
It is carried into the cabinet 1 while being suspended from the hook 4 of the crane. As the shot S, for example, a stainless ball having a ball diameter of 0.6 to 1 mm is used.

In the cabinet 1, a plurality of protective plates 6 are regularly arranged in the same plane on the entire inner surface of an outer plate portion 5 which constitutes the external appearance, and the inner wall is formed over the entire inner surface of all the protective plates 6. An adhesive layer 7 is provided as a protective device.

The protective plate 6 has a rectangular shape as shown in FIG. 2, and as shown in FIG. 3, a step portion for engaging with the protective plates 6 vertically adjacent to each other is provided on the upper part of the front surface and the lower part of the rear surface. 6a, 6
In addition to having b, the back face has a hook-like hooking portion 6c for hooking the protective plate 6 to the outer plate portion 5 side. Further, the protective plate 6 can be formed of a member having an appropriate strength such as metal or synthetic resin, and is not particularly required to have wear resistance.

The pressure-sensitive adhesive layer 7 is composed of a rubber sheet or the like having a pressure-sensitive adhesive property to which the shot S can be sufficiently adhered, and a non-curable property for a long period of time. When using shot S, 4 to 15
It is provided with a thickness of mm.

In the shot blasting device having the inner wall protection device by the adhesive layer 7, when the shot S is projected onto the work W housed in the cabinet 1, the shot S from the projection device 2 or the shot rebounded by the work W. S adheres to the entire surface of the adhesive layer 7 as shown in FIG.

Therefore, the shot S continuously scattered in the cabinet 1 collides with the shot S adhering to the adhesive layer 7, falls, and is discharged. In this way, the inner wall of the cabinet 1 is protected from the shot S, and there is no fear that the shot S reaches the protection plate 6. Further, even if the shot S attached to the adhesive layer 7 is dropped, a new shot S is attached to the dropped portion, and the protective function is reliably maintained.

FIG. 5 is a view showing an embodiment of the inner wall protection device of the shot blasting apparatus according to claim 2 of the present invention.

The protective plate 6 shown in the figure constitutes a cabinet of a shot blasting apparatus as in the previous embodiment. On the inner surface of the cabinet of the protective plate 6, as an inner wall protection device, an adhesive layer 7 made of, for example, a rubber sheet is provided via a release layer 8 made of a thin sheet having adhesiveness on both surfaces.
Is provided.

In the inner wall protection device using the peeling layer 8 and the adhesive layer 7 described above, the peeling layer 8 causes the protective plate 6 to move to the adhesive layer 7.
Can be easily removed, and when the adhesive layer 7 deteriorates during long-term use, the adhesive layer 7 can be easily replaced.

Further, in the case of the above-mentioned inner wall protection device, by providing the peeling layer 8 and the adhesive layer 7 which are separated for each protective plate 6, it is possible to partially remove the adhesive layer and replace the adhesive layer 7. Can be made even easier.

[0021]

As described above, according to the inner wall protection device of the shot blasting apparatus of the present invention, the inner wall of the cabinet is protected by using the adhesive layer and the shots attached thereto, so that the wear resistance is improved. The device can be obtained inexpensively without using an expensive protective plate provided, and since the protective function can be reliably maintained for a long period of time, the maintenance management of the cabinet inner wall can be greatly simplified. Further, the peeling layer allows the adhesive layer to be easily removed, and maintenance management such as replacement work of the adhesive layer can be further facilitated.

[Brief description of drawings]

FIG. 1 is a sectional view illustrating a shot blasting device including an inner wall protection device according to claim 1 of the present invention.

FIG. 2 is a perspective view illustrating a protection plate in FIG.

FIG. 3 is an enlarged cross-sectional view of a protective plate and an adhesive layer.

FIG. 4 is a cross-sectional view showing a state in which a shot is attached to an adhesive layer.

FIG. 5 is a perspective view illustrating an inner wall protection device according to claim 2 of the present invention.

[Explanation of symbols]

 S Shot W Work 1 Cabinet 7 Adhesive layer 8 Release layer

Claims (2)

[Claims] 1. An inner wall protection device for a shot blasting device, wherein an adhesive layer for adhering shots is provided on an inner surface of a cabinet for accommodating a work. 2. The inner wall protection device for a shot blasting apparatus according to claim 1, wherein the adhesive layer is provided between the inner surface of the cabinet and a peeling layer.