JPH0541397B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a barrel-type shot blasting machine for blasting a product by projecting an abrasive onto the product.

(Prior Art) In conventional barrel-type shot blasting machines, a large number of products are housed in a large, batch-type barrel for abrasive processing.

(Problem to be solved by the invention) In the case of the above-mentioned shot blasting machine, the product is once placed in the bucket of the bucket loader device installed to transport the product and put it into the barrel, or in the hopper of the conveyor device. It is necessary to stock up,
In addition, in each polishing cycle, the abrasive material remaining in the barrel is discharged after polishing is completed, and
There was a problem in that idling time was required to discharge the product in the barrel.

The purpose of the present invention is to solve the above problems, eliminate product stock in the abrasive processing line, and improve productivity by eliminating loss time between operations during the abrasive processing cycle. The goal is to provide opportunities.

(Means for Solving the Problems) The shot blasting machine of the present invention has a horizontal rotating shaft that is installed to enable intermittent rotation control, and is arranged at a rotationally symmetrical position of 120° around the axis of this rotating shaft. The three bottomed cylindrical barrels provided are rotatably coupled together, and one barrel of the three barrels is rotated upward from the bottom dead center position directly below the pivot shaft around the pivot shaft. A loading station is rotated 120 degrees to a product loading chute and stands still in an inclined position, and one barrel of the three barrels is rotated 120 degrees beyond the top dead center position from the loading station. a grinding station that rotates and rotates in an inclined position toward the projection device; and one barrel of the three barrels rotates 120° downwardly from the grinding station to be at the bottom dead center position. It has a configuration in which a discharge station is arranged and stands stationary in an inverted position facing a conveyor for discharging products.

(Function) One of the three bottomed cylindrical barrels arranged at 120° rotationally symmetrical positions about the axis of the horizontal pivot axis moves from the bottom dead center position directly below the pivot axis. At the loading station, which rotates 120 degrees upwards and stands still in an inclined position, the product is loaded into the barrel through the chute, and one of the three barrels is loaded.
The two barrels are rotated 120 degrees beyond the top dead center position from the loading station, and at the polishing station which rotates in an inclined position, the products in the barrels are polished by the abrasive material projected from the projection device. ,3
At the discharge station, one of the two barrels rotates 120 degrees downward from the polishing station and stands still in an inverted position at the bottom dead center position, where the polished products and abrasive material in the barrel are removed. The products are discharged onto a conveyor, and the loading of the products, the polishing process for the products, and the discharge of the products are performed synchronously.

(Example) Next, an example of the present invention will be described with reference to the drawings.

A rotating shaft 6 whose rotation is controlled intermittently by a motor 25 installed at the rear of the machine body 7 is supported horizontally on a support stand 22 placed horizontally near the center of the machine body 7 of the shot blasting machine B. A mounting frame 4 having a regular hexagonal cross section is attached to the pivot shaft 6.

Three support shafts 17 to 17, which are rotatably supported by two opposing frame pieces of the mounting frame 4 through a pair of bearings 18, are inserted into the mounting frame 4 in a rotationally symmetrical manner of 120 degrees. A disk-shaped mounting plate 21 is attached to the tip of each support shaft 17, respectively.

3 each formed into a cylindrical shape with an open end and a bottom.
The barrels 3A, 3B, and 3C are removably fastened to the mounting plate 21, respectively, and are mounted concentrically to the tip of each support shaft 17, and rotate around the pivot shaft 6 relative to the mounting frame 4. They are supported so that they can rotate together and are arranged in rotationally symmetrical positions of 120 degrees.

Three barrels 3A, 3B,
One barrel of 3C is rotated 120 degrees upward from the bottom dead center position directly below the rotation axis 6, and is tilted toward the product loading chute 1, which is arranged at the upper end of one end of the fuselage 7. The loading station S1 stands still, and one of the three barrels 3A, 3B, and 3C rotates 120 degrees beyond the top dead center position from the loading station S1 to the upper end of the other end of the fuselage 7. a grinding station S2 that rotates in an inclined position toward the installed projection device 10;
One barrel among the three barrels 3A, 3B, and 3C is rotated 120 degrees downward from the polishing station S2, and is directed toward the discharge vibrating conveyor 5 installed below the pivot shaft 6 at the bottom dead center position. The ejection stations S3 are arranged in a rotationally symmetrical manner of 120 degrees, and each barrel 3A, 3B, 3C is connected to each station S1, S3.
Intermittent turning control is performed to sequentially turn to 2 and S3 and temporarily stop. At the input station S1 where the barrel 3A faces the chute, the products fed to the vicinity of the upper end of the machine body 7 by the carry-in conveyor 15 installed on one side of the machine body 7 are continuously fed into the barrel 3A through the chute 1. . Also, barrel 3B
a polishing station S2 facing the projection device 10;
In this case, granular abrasive material is fed vertically from below to above by a bucket elevator 12 installed adjacent to the fuselage 7 and is fed into the projection device 10 through a separator 13 and a cut gate 14. It is projected towards the product in 3B. Further, at the discharge station S3 where the barrel 3C faces the vibrating conveyor 5, the products and abrasive material in the barrel 3C fall and are collected on the vibrating conveyor 5, and the products collected on the vibrating conveyor 5 are transferred to the vibrating conveyor 5. The abrasive materials collected on the vibrating conveyor 5 are transferred onto the adjacent unloading conveyor 16 and carried out of the machine, while the abrasives collected on the vibrating conveyor 5 are transferred to the screw conveyor 11 connected to the lower side of the vibrating conveyor 5. It is collected and sent to the lower end of the bucket elevator 12, and then fed to the projection device 10 again.

Barrel 3 of grinding station S2 against fuselage 7
Mounting base 2 is swingably attached to face B.
0 is linked to a piston shaft 9a of an air cylinder 9 supported by the body 7 via a bracket 23, and is controlled to swing toward and away from the barrel 3B by the forward and backward movement of the piston shaft 9a.

A rotatable wheel 8 rotatably supported by a mounting base 20 and coated with an elastic material is connected to a motor mounted on the mounting base 20 in order to rotate the barrel 3B by slidingly contacting the barrel 3B transferred to the grinding station S2. 19, and when the piston shaft 9a of the air cylinder 9 is advanced, the rotatable wheel 8 is displaced toward the barrel 3B together with the mounting base 20 and comes into sliding contact with the barrel 3B, and the barrel 3B of the polishing station S2 rotates on its own axis. While the product in the barrel 3B is stirred, when the piston shaft 9a of the air cylinder 9 is retracted, the rotatable wheel 8 is displaced together with the mounting base 20 toward the opposite side of the barrel and separated from the barrel 3B, and the barrel 3B is agitated. 3B's rotational movement stops.

Then, there is an input operation in which products are continuously input into the barrel 3A of the input station S1, a cleaning operation in which the abrasive material is projected toward the products in the barrel 3B of the polishing station S2, and an ejection operation in the discharge station S3. A discharge operation in which the abrasive material and processed products are discharged from the barrel 3C onto the vibrating conveyor 5 is performed synchronously at each station S1, S2, and S3. When the grinding process at the grinding station S2 is completed, the cut gate 14 is closed, the feeding of the abrasive material to the projection device 10 is stopped, and the rotation of the barrel 3B is stopped, and each station S1, S2, Each barrel 3A, 3B, 3 of S3
C is rotated 120 degrees each and transferred to the next station, and the above operations are repeated for each polishing cycle.

Next, the operation and effects of the embodiment having the above configuration will be explained.

In this example, a horizontal pivot shaft 6 is installed to enable intermittent rotation control, and the axis of the pivot shaft 6 is centered on the pivot shaft 6.
Three bottomed cylindrical barrels 3A, 3B, and 3C arranged at rotationally symmetrical positions of 120 degrees are coupled together so that they can rotate together, and the three barrels 3A, 3 are arranged around the rotation axis 6.
a loading station S1 in which one barrel of B and 3C rotates 120 degrees upward from the bottom dead center position directly below the pivot shaft 6 and stands still in an inclined position toward the chute 1 for loading the product; three barrels 3
A grinding station S2 in which one of the barrels A, 3B, and 3C rotates on its own axis with one barrel turning 120 degrees beyond the top dead center position from the input station S1 and tilting toward the projection device 10; barrel 3
A discharge station in which one barrel of A, 3B, and 3C rotates 120 degrees downward from the polishing station S2 and stands still in an inverted posture toward the vibrating conveyor 5 for product discharge at the bottom dead center position. S3
are arranged.

For this reason, the operation of putting the product into the barrel 3A, the operation of cleaning the product inside the barrel 3B, and the operation of the product in the barrel 3B are performed.
The discharge operation of products and abrasive materials in C can be performed simultaneously at each station S1, S2, and S3, and product stock in bucket loaders and hoppers for transporting products, as well as intermediate inventory between each process, can be performed simultaneously. In addition, while the product is being polished, the untreated product can be put into the barrel 3A, and the treated product and abrasive material can be discharged from the barrel 3C to carry the product in and out and polish it. This has the effect of eliminating loss time for discharging the cleaning material and increasing the productivity of the cleaning process.

(Effects of the Invention) Since the present invention is configured as described above, loading the product into the barrel, polishing the product in the barrel, and discharging the product and abrasive material in the barrel can be performed in three steps. Product cleaning can be carried out synchronously at two locations, streamlining the loading and unloading process, eliminating product stock and intermediate inventory, as well as loading and unloading products and discharging abrasive materials. The cycle time of the cleaning process can be shortened by eliminating the loss time required for cleaning.

Additionally, since each barrel pivots around a horizontal pivot axis, the horizontal space required for barrel pivoting is reduced, thereby reducing the floor space required to install the shot blasting machine. I can do it.

Furthermore, since the barrels at the loading station and the polishing station are tilted toward the chute and the polishing device, it is possible to accurately load products into the barrel and perform the polishing process on the products inside the barrel. In addition, since the barrel stands still in an inverted position at the ejection station, the products inside the barrel can be ejected accurately at the ejection station, and all the abrasive material inside the barrel can be removed from the barrel. It can be reliably discharged from the barrel in a short time without leaving any residue in the barrel.
Therefore, it is possible to eliminate the problem of the barrel being transferred to the loading station or the polishing station with the abrasive material remaining in the barrel, or the time required to complete discharging of the polisher.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a front view of a shot blasting machine, Fig. 2 is a side view of the same, Fig. 3 is a vertical sectional view of main parts, and Fig. 4 is a shot blasting machine.
It is a - line enlarged sectional view of a figure. 3A, 3B, 3C... Barrel, S1... Loading station, S2... Grinding station, S3... Discharging station.

Claims (1)

[Claims] 1. A horizontal rotating shaft installed to enable intermittent rotation control and three bottomed cylindrical barrels arranged at 120° rotationally symmetrical positions around the axis of this rotating shaft can be rotated together. one barrel of the three barrels is rotated 120 degrees upwards from the bottom dead center position directly below the pivot axis, and tilted toward a product loading chute. The loading station remains stationary, and the grinding machine rotates, with one barrel of the three barrels rotating 120 degrees beyond the top dead center position from the loading station and tilting toward the projection device. a scavenging station and one barrel of the three barrels pivots downward from the scavenging station by 120° and rests in an inverted position toward the product discharging conveyor at the bottom dead center position; A shot blasting machine characterized by an arrangement of stations.