JPS6317592B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shot hanger blasting device having a double cylinder structure consisting of an inner cylinder cabinet and an outer cylinder cabinet.

Generally, seal curtains made of multiple sheets of rubber are provided at the entrance and exit of the cabinet in shot hanger blasting equipment.
When the hanger with the workpiece suspended passes through,
Since the hanger is tilted due to the resistance of the rubber, the hanger is suspended and supported by a number of traveling seals connected in a chain to maintain the hanger in a vertical position. Providing a traveling seal for each hanger increases equipment costs, and it also requires multiple doors to be rotatably arranged in a radial pattern, with hangers suspended between the doors. There is also a structure that moves the hanger at the same time, but this has a circular line configuration, so
There was a problem when a straight line was desired due to the installation area.

The present invention has been made in view of these problems, and includes vertical installation of a fixed external cabinet provided with an opening through which a workpiece suspended and transported by a hanger can pass. At the same time, an inner cylinder having an opening on the opposing peripheral wall surface through which a hanger can pass is inserted into the outer cylinder so that it can be horizontally rotated concentrically, thereby eliminating the need for rubber seals and traveling seals and providing freedom. It is an object of the present invention to provide a shot blasting device that allows a flexible line configuration.

The configuration of the present invention will be explained below based on examples. Reference numeral 1 denotes a cylindrical outer cabinet with an upper wall, which is fixed to a fixed frame 2 and has a wear-resistant liner (not shown) attached to its inner peripheral surface. At the center of the fixed frame 3, a hanger rail 4 is mounted.
has been installed. On the hanger rail 4, a hanger 6 with a workpiece 5 suspended thereon is intermittently moved forward via wheels 7 by a drive device (not shown). A rotary joint 6b is interposed therebetween, and a chain wheel 6c that is engaged with a chain-driven rotation device 8 attached to the upper wall surface of the outer cabinet 1 is attached to the shaft portion 6a at the lower position of the rotary joint 6b. The hanger 6 that has been fitted and moved intermittently is connected to the chain wheel 6c.
engaged with the chain-driven rotating device 8 via;
It is designed to be able to rotate together with the workpiece 5. The outer cabinet 1 has openings 9, 9 on the opposing circumferential wall surface through which the workpiece 5 can pass, and the shaft portion 6a of the hanger 6 can pass through on a line connecting both the openings 9, 9 on the upper wall surface. It has a shape that includes a notch 10 and a bent portion 1a that is inclined inward at the periphery of the opening on the lower surface.

Reference numeral 11 denotes an inner cabinet which is inserted concentrically into the outer cabinet 1 with a slight gap between the peripheral walls and has an abrasion resistant liner (not shown) attached to the inner peripheral surface, and the inner cabinet 11 has a discharge port. 12 is horizontally rotatably supported by a bearing 13 and has an inverted cone-shaped hopper part 15 having a roller receiving surface 14 on an inclined surface; The workpiece 5 can pass through the peripheral wall surface,
and an opening 9 formed in the outer cabinet 1.
It is composed of a cylindrical body 18 having slightly smaller openings 16, 16, and further provided with a notch 17 through which the hanger 6 can pass, on a line connecting both the openings 16, 16 on the upper wall surface, and the hopper part 15. An annular member 19 having an L-shaped cross section is fixed to the outer periphery of the upper end, and an elastic seal 19a is attached to the outer periphery of the annular member 19 with bolts and nuts. The shot is brought into contact with the outer circumferential wall surface of the bent portion 1a of the cabinet 1 to prevent the shot from protruding outward. Further, sealing members 20 are attached to the inner edges of both sides of the openings 9, 9 of the outer cabinet 1 in the gap between the peripheral wall surfaces of the outer cabinet 1 and the inner cabinet 11.
is loaded to prevent the shot projected toward the workpiece 5 from jumping out from the gap. Further, the inner cabinet 11 is rotatably supported by a tapered roller 21 on a roller receiving surface 14 in the hopper portion 15, and a chain band 22 is wound around the outer circumference of the inner cabinet 11. , the chain belt 22 has a rigid motor 2 mounted upward on a motor support stand 23.
The chain wheel 25 fitted on the drive shaft 24a of the outer cabinet 1 is engaged with the chain wheel 25, and by the operation of the rigid motor 24, the inner cabinet 11 slides the elastic seal 19a against the outer circumferential wall of the bent portion 1a of the outer cabinet 1, and the seal member 25 is engaged with the drive shaft 24a. 20 so that it can be rotated in a horizontal plane by sliding on the inner peripheral surface. In addition, the tapered roller 21
is fitted onto a rotating shaft 28 whose both ends are rotatably supported by bearings 27 attached to a support base 26 . Reference numeral 29 denotes a plurality of projection devices arranged at upper and lower positions perpendicular to the traveling direction of the hanger 6. The projection devices 29 have projection ports opening into the outer cabinet 1 and are suspended and supported by the hanger 6. It is provided toward the workpiece 5 to be processed. 3
Reference numeral 2 denotes a screw conveyor installed below the hopper section 15 of the inner cabinet 11. The screw conveyor 32 is connected to a bucket elevator 30, and the bucket elevator 30 collects the collection shot and sand at its upper end. It is connected in communication with a separator 33 that separates foreign substances such as iron pieces and dust, and the recovery shot separated from the foreign substances in the separator 33 is circulated and supplied to the projection apparatus 29 through a supply pipe 34, and is also separated from sand, iron pieces, and dust. Such foreign substances are discharged into a collection box (not shown) through a discharge pipe 35. Incidentally, numeral 36 is a disk fixed to the shaft portion 6a of the hanger 6 through its center portion, and is provided so as to prevent the shot from popping out from the notches 10 and 17. 37 is a drive device for the screw conveyor.

Next, the operation of the device configured as described above will be explained. In the state shown in FIG. 2A, in which the openings 9 and 16 of the outer cabinet 1 and the inner cabinet 11 are substantially aligned, the workpiece 5 suspended and supported by the hanger 6 passes through the openings 9 and 16, and is opened to the outer cabinet 1. When the inner cabinet 11 is moved intermittently to the approximate center of the inner cabinet 11, the rigid motor 24 is activated and the inner cabinet 11 is moved through the chain wheel 25 and the chain band 22.
At the same time, the projection device 29 is activated to project the shot toward the workpiece 5 , and the chain-driven rotation device 8 is activated to rotate the workpiece 5 together with the hanger 6 . Foreign matter such as sand, iron pieces, dust, etc. adhering to the surface is peeled off and removed (state shown in Figure 2 B). At this time, the shot projected toward the workpiece 5 collides with the workpiece 5 and then bounces off the cylindrical inner peripheral wall surface of the inner cabinet 11, and the shot that bounces back hits the workpiece again. 5 to effectively abrade the workpiece 5.

After the cleaning is completed, the operation of the projection device 29 and the chain-driven rotation device 8 is stopped, and the rigid motor 24 is activated to rotate the inner cabinet 11 90 degrees clockwise via the chain wheel 25 and chain band 22. the openings 9 of the outer cabinet 1 and the inner cabinet 11,
Match 16.

Next, the hanger 6 is moved forward intermittently by actuating a drive device (not shown), and the workpiece 5 is carried out of the outer cabinet 1 together with the hanger 6 (the state shown in FIG. 2C). Thereafter, repeat the above operation. The shot projected toward the workpiece 5 and foreign substances such as sand, iron pieces, and dust separated from the workpiece 5 are transferred from the workpiece 15 to the separation device 33 via the screw conveyor 32 and the bucket elevator 30. Here, the shot is separated into foreign matter such as sand, iron pieces, dust, etc., and only the shot is circulated and supplied to the projection device 29 via the supply pipe 34, and the foreign matter such as sand, iron pieces, dust, etc. is passed through the discharge pipe 35 as shown in the figure. It will be disposed of in a collection box where it will not be collected.

As is clear from the above description, according to the present invention, a line configuration can be planned freely according to the installation area, the inlet and outlet of the cabinet are completely sealed, and a traveling seal is provided for the hanger. It is unnecessary and has the effect of reducing equipment costs, making it a significant contribution to this type of industry.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIGS. 2A to 2C are process diagrams showing an embodiment of the present invention. 1: Outer cabinet, 5: Processed product, 6: Hanger, 9, 16: Opening, 10, 17: Notch,
11: Inner cabinet, 15: Hopper part, 1
8: Cylindrical body.

Claims (1)

[Claims] 1. Inlet/outlet openings through which the processed articles suspended and supported by hangers can pass are provided on the opposing circumferential wall surface in the conveying direction of the processed articles, and the input/outlet openings in the upper wall surface are provided. A cylindrical outer cabinet with an open bottom surface and a notch through which the hanger can pass is installed vertically on the connecting line, and the outer cabinet is installed vertically at a position substantially perpendicular to the conveyance direction of the workpiece. A projection device is disposed outside the outer cabinet with an opening inside the outer cabinet,
In addition, the upper end opening of the inverted conical hopper part is provided with an inlet/outlet opening on the opposing peripheral wall surface through which the processed article can pass, and the hanger is passed through on a line connecting the inlet/outlet openings on the upper wall surface. 1. A shot hanger blasting device characterized in that an inner cabinet having a structure in which cylindrical bodies each having a cutout portion are inserted in the outer cabinet so as to be horizontally rotatable concentrically.