JPH07241771A - Normal-reverse rotation trough for normal-reverse rotating trough type shot blasting device - Google Patents

Abstract

PURPOSE:To provide a normal-reverse rotating trough that can reduce the crash of products at the time of discharging the products from the normal- reverse rotating trough in a normal-reverse rotating trough type shot blasting device in which the trough forming a grinding/polishing/cleaning chamber is installed in the state of being normally and reversely rotatable by a specified angle within the vertical plane. CONSTITUTION:In a normal-reverse rotating trough 2, the inner surface of cross section is formed into circular or semi-circular shape at least at a product carry-out side part 2b and into semi-polygonal shape or U-shape at a central part 2c for shot-blasting a product.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a normal / reverse rotation trough of a forward / reverse rotation trough type shot blasting device in which a trough constituting a polishing / sweep chamber is arranged so as to be able to rotate forward / backward at a predetermined angle in a vertical plane.

[0002]

2. Description of the Related Art Conventionally, a trough having a semi-polygonal cross-sectional inner surface is arranged so as to be able to rotate in a vertical plane in a normal / reverse direction to form a polishing / cleaning chamber. There is a shot blasting device that projects a shot while moving it, and then transfers it to a predetermined place by a vibrating conveyor or the like arranged below the discharge port of the forward and reverse rotation troughs. When products of various shapes such as plate-like objects were agitated and tumbled under certain conditions, these products were lifted to an unnecessarily high position not only during shot blasting but also during discharge from the forward and reverse rotating troughs. After that, it dropped and collided with other products in the forward / reverse rotation trough or the vibrating conveyor, and there was a problem that the product was dented or scratched or cracked. The present invention has been made in view of the above circumstances, and an object thereof is to provide a forward / reverse rotation trough having a shape capable of reducing collisions between products when discharged from the forward / reverse rotation trough. To do.

[0003]

In order to achieve the above object, the forward / reverse rotation trough of the shot blasting device according to the present invention is capable of rotating the forward / reverse rotation trough constituting the polishing chamber in a vertical plane at a predetermined angle. In the forward / reverse rotation trough of the forward / reverse rotation trough type shot blasting device, the inner surface of the cross section is circular or semi-circular at least on the unloading side of the product, and at the portion where the product is shot blasted. It is characterized by forming a semi-polygonal shape or a U-shape.

[0004]

With this structure, the product having the same shape is loaded into the forward / reverse rotation trough, and then the forward / reverse rotation trough is normally / reversely rotated at the rotation speed corresponding to the product. As the rotary trough rotates, the product is lifted to a relatively high position in the shot blasting part and then falls, while it is lifted to a relatively low position in the unloading part and then slides forward and backward. After being moved in the trough, it is discharged onto the vibrating conveyor.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, which is a partially cutaway sectional front view, a forward / reverse rotating trough 2 which extends in the left-right direction and constitutes a grinding and sweeping chamber in a cabinet 1 has a support roller (not shown) at a predetermined angle in a vertical plane. The trough 2 is arranged so as to be rotatable in the forward and reverse directions. The inner surface of the forward and reverse rotation trough 2 has a circular shape in the product input side portion 2a and the product output side portion 2b, and the product is shot blasted. The central portion 2c has a semi-polygonal shape (see FIG. 3). Then, a lead (not shown) is formed on the inner surface of the forward / reverse rotation trough 2.
Is projected.

Further, the forward / reverse rotary trough 2 is equipped with a rotary drive device 3 for driving the forward / reverse rotary trough, and the rotary drive device 3 is an annular first ring attached to the forward / reverse rotary trough 2.
The chain wheel 4, the motor 5 with a reducer installed on the ceiling of the cabinet 1, the second chain wheel 6 fitted to the output shaft of the motor 5, and the first and second chain wheels 4, 6 It is composed of an endless roller chain 7 spanned between them, and the forward / reverse rotation trough 2 is made to rotate forward / reversely by the forward / reverse drive of the motor 5. Further, a controller 8 is electrically connected to the motor 5 so that the number of rotations thereof can be changed during the rotation. Further, the motor 5 is provided with a rotary encoder 9 as a rotation detecting means of the forward / reverse rotation trough 2, and the rotation angle and the rotation speed of the output shaft of the motor 5 are measured to rotate the forward / reverse rotation trough 2. It is possible to indirectly detect the angle and the rotation speed and control the rotation end and the rotation speed range (high speed / low speed). Reference numeral 10 in the figure denotes a vibrating conveyor arranged below the product discharge port of the forward / reverse rotation trough 2.

In the apparatus constructed as described above, products having the same shape are loaded into the forward / reverse rotation trough 2, and the controller 8 determines that the products in the forward / reverse rotation trough 2 are the normal / reverse rotation trough 2. After presetting the rotation angle of the forward / reverse rotation trough 2 up to the state in which the forward / reverse rotation trough 2 rises with the rotation and can fall, the rotation drive device 3
The motor 5 is driven to rotate the forward / reverse rotation trough 2.
Then, while the rotation angle of the forward / reverse rotation trough 2 is detected by the rotary encoder 9, the products in the forward / reverse rotation trough 2 are lifted through the reeds as the forward / reverse rotation trough 2 rotates, and can fall. The forward / reverse rotation trough 2 is rotated at a high speed, then slowly rotated by a command from the controller 8, and then stopped by a stop command from the controller 8. With the rotation of the forward / reverse rotation trough 2, the product is lifted to a relatively high position in the shot blasting portion of the forward / reverse rotation trough 2 and then falls down, while being lifted to a relatively low position in the carry-out side portion. After being moved down, it is slid down and moved in the forward / reverse rotation trough 2, and then discharged onto the vibration conveyor 10.

In the above embodiment, the inner surface of the cross section of the forward / reverse rotation trough 2 has a circular shape in the product loading side 2a and the product unloading side 2b, but at least the product unloading side. The portion 2b may be circular or semi-circular, and the central portion 2c to be shot blasted has a semi-polygonal shape, but may have a U-shaped structure.

[0009]

As is apparent from the above description, in the forward / reverse rotation trough of the present invention, the inner surface of the transverse section has a circular shape or a semicircular shape at least at the product discharge side, and the product is shot blasted. Since it has a semi-polygonal or U-shaped portion, the product is lifted to a relatively low position in the carry-out portion of the forward / reverse rotating trough and then slides down as the forward / reverse rotating trough rotates. Since it is discharged from the forward / reverse rotation trough, it has an excellent effect such that collisions between products can be reduced when discharged from the forward / reverse rotation trough.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional front view showing a drive portion of an embodiment of the present invention.

FIG. 2 is a left side view of a partially cutaway section of FIG.

FIG. 3 is a front view of a main part (rotary trough) of the present invention.

[Explanation of symbols]

 2 forward / reverse rotation trough 2b unloading side part 2c central part

Claims (1)

[Claims] 1. A forward / reverse rotation trough of a forward / reverse rotation trough type shot blasting device in which a trough forming a polishing chamber is arranged so as to be able to rotate forward / backward at a predetermined angle in a vertical plane. The forward / reverse rotation trough of the forward / reverse rotation trough type shot blasting device is characterized in that the discharge side portion has a circular shape or a semicircular shape, and the portion for shot blasting the product has a semi-polygonal shape or a U shape. .