JPH0663268U - Shot blasting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] Equipped with a simple structure for supplying the product to be cleaned, which can efficiently and safely supply the product to be cleaned to the polishing chamber and to shorten the cleaning cycle. Provided is a shot blasting device capable of downsizing the entire device. [Structure] Above the cleaning / barrel 3 in the cleaning / cleaning chamber 1 containing the cleaning / cleaning barrel 3 for cleaning / cleaning the material 2 to be polished, in the space 10 for storing the cleaned / cleaned product in the polishing / barrel 3, the product to be cleaned The object to be grounded supply hopper 17 for supplying 2 is housed, and the side wall 34 of the chamber 1 is equipped with a projector 23 for projecting the material to be ground 2 onto the material to be ground 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention projects a cleaning material consisting of steel balls or the like having a small particle size onto the object to be polished to perform a surface cleaning treatment such as a satin finish on the surface of the object to be polished or rust removal on the surface of the object to be polished. A shot blasting device for performing. More specifically, the endless belt is stretched between the rollers with each end along a part of the peripheral edge of the side drum, and the side drum is configured to be rotatable by the running of the endless belt. Improvement of a so-called tumbler type shot blasting device that has a polishing and cleaning barrel in the polishing and sweeping chamber for carrying out polishing and cleaning by mounting the product to be polished on the endless belt in the storage space for the product to be polished formed by the endless belt It is a thing.

[0002]

[Prior art]

 The tumbler-type shot blasting device supplies the product to be swept onto the endless belt in the space for storing the swept product of the sweeping barrel, runs the endless belt endlessly, and rolls the swept product on the belt. After projecting the projection material onto the product to be polished and removing the product to be polished that has been cleaned and cleaned from the belt of the polishing barrel, supply another product to be polished to the polishing barrel again. It is configured to perform a blast.

Conventionally, in a tumbler type shot blasting apparatus, a bucket loader is generally used to supply an article to be polished onto an endless belt of a polishing barrel. When supplying the to-be-cleaned product by the bucket loader, open the to-be-cleaned product inlet of the polishing chamber, and gradually insert the bucket of the bucket-loader containing the to-be-cleaned product to be supplied into the bucket top opening. While tilting to the end, pull up to the supply position of the product to be polished above the polishing chamber with a wire etc., and drop the product to be polished in the bucket from the upper end of the tilted bucket opening onto the endless belt of the polishing barrel in the polishing chamber. Was supplied in this way.

[0004]

However, in the conventional shot blasting device in which the object to be cleaned is supplied to the cleaning and cleaning barrel by the bucket loader, the conventional method for cleaning the cleaning and cleaning chamber in the polishing and cleaning chamber is completed after one cleaning and polishing operation is completed. Open the product introduction port and operate the bucket loader to raise the bucket containing the product to be polished for the next polishing and cleaning to the supply position of the product to be polished. After taking out the polished product from the polishing barrel after the completion of the process, the time required until the polished product to be supplied to the next cleaning and sweeping is supplied to the polishing barrel becomes longer, and continuous polishing is performed. There was a problem that it could not be done efficiently.

In addition, in the method of supplying the to-be-cleaned product into the polishing chamber by the bucket loader, it is necessary to pull up a heavy bucket containing the to-be-cleaned product to a predetermined height and open / close the door of the heavy-to-be-cleaned product introduction port. However, there is a risk of cutting accidents such as a wire for pulling up the bucket or the door of the article to be inspected and swept in, which is a safety issue.

Moreover, in the method of supplying the product to be cleaned by the bucket loader, when the product to be cleaned in the bucket is dropped into the polishing and cleaning chamber, a very large noise is generated and the working environment is deteriorated.

Further, in the bucket loader, the height of the bucket loader must be raised to a certain height in order to drop the material to be ground in the bucket into the polishing room, and the height of the bucket loader must be high. However, since the projector etc. are mounted on the upper surface side of the polishing room, there is a problem that the height of the entire device becomes high and a large installation space is required. In addition, the bucket loader is designed so that the bucket tip is gradually inclined and the bucket is pulled up, and when the bucket is pulled up to a predetermined height, the product to be ground in the bucket is dropped into the polishing chamber. The structure is difficult to say, and there was also the problem that the cost of the device was high.

It is an object of the present invention to provide a shot blasting device that solves the drawbacks of the conventional shot blasting device.

[0009]

[Means for Solving the Problems]

 That is, in the shot blasting device of the present invention, the endless belt is stretched between the rollers with each end along a part of the peripheral edge of the side drum, and the side drum is configured to be rotatable by the running of the endless belt. Place the product to be polished on the endless belt in the storage space for the product to be polished, which is formed by the side drum and the endless belt. In the shot blasting device in the polishing chamber, a polishing product supply hopper for supplying the polishing target to the polishing barrel is provided above the polishing barrel in the polishing chamber, and the side wall of the polishing chamber The feature is that a projector for projecting the abrasive material is attached to the abrasive material.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the shot blasting apparatus of the present invention. In the figure, reference numeral 1 denotes a polishing and sweeping chamber, and the polishing and sweeping chamber 1 accommodates a polishing and sweeping barrel 3 for polishing and sweeping an article to be polished 2. As shown in FIG. 2, the cleaning and sweeping barrel 3 is composed of side drums 4 and 5, and an endless belt 6 stretched along a part of the circumference of the side drums 4 and 5.

The endless belt 6 is provided between the drive roller 7 and the front roller 9 by a tension roller 8 so that each end edge portion is brought into contact with a part of the peripheral edge of the side drums 4, 5. It is tensioned and stretched. The side drums 4, 5 and the endless belt 6 form a space 10 for storing the article to be polished, and the endless belt 6 in the space 10 is provided with the article to be polished 2 to be subjected to the cleaning treatment. It is configured. A gear 30 is pivotally mounted on the shaft 7a of the drive roller 7, and the gear 30 is connected via a chain belt 31 to a gear 33 pivotally mounted on a rotary shaft 32a of a reversible rotary motor 32, whereby the endless belt 6 Is configured to be capable of traveling endlessly by the driving force of the driving roller 7. The rotation shafts 11 of the side drums 4 and 5 are rotatably supported on the side wall of the polishing and cleaning chamber 1 so that the side drums 4 and 5 in contact with the endless belt 6 rotate as the endless belt 6 travels. It is configured.

An auxiliary roller 12 is provided between the front roller 9 and the tension roller 8, and the shaft 12 a of the auxiliary roller 12 and the shaft 9 a of the front roller 9 are connected by a connecting arm 13 and The shaft 12a of the roller 12 is connected to the piston shaft 16 of the air cylinder 15 by the operation transmission rod 14. The front roller 9 is supported so as to rotate about the shaft 12a of the auxiliary roller 12 as the piston shaft 16 of the air cylinder 15 moves back and forth, and this rotation causes the end roller 6 side of the endless belt 6 to move. It is configured to be movable up and down.

In the blasting chamber 1 of the shot blasting apparatus of the present invention, there is a hopper 17 to be blasted to feed the blasted product 2 to the ware-to-be-swept storage space 10 of the blasting barrel 3. , Is provided above the polishing and cleaning barrel 3. A lid 18 which is controlled to be openable and closable is provided at a lower opening portion of the article-to-be-polished supply hopper 17, and a predetermined amount of article-to-be-polished 2 is held in the article-to-be-polished supply hopper 17. Is configured so that it can be stored.

The supply of the to-be-polished product 2 to the to-be-polished-product supplying hopper 17 is performed by, for example, the to-be-polished product transfer belt conveyor 19 or the like. The to-be-cleaned product supply hopper 17 is provided with means for detecting the storage amount of the to-be-cleaned product 2, such as a photoelectric sensor and a weight sensor, which are not shown, so that the quantity to be supplied for one time of the cleaning can be determined. When the to-be-cleaned product 2 is supplied into the hopper 17, the to-be-cleaned product transfer belt conveyor 19 is stopped.

On the side wall 34 of the polishing / cleaning chamber 1, a projector 23 equipped with a rotary blade 22 that is rotated by a motor 20 and projects the polishing / cleaning material 21 is attached. The material to be polished 2 is polished and cleaned in the polishing and cleaning barrel 3 in the polishing and cleaning object storage space 10.

The endless belt 6 is provided with a large number of through holes 24, and the abrasive cleaning material 21 projected from the projector 23 onto the article to be cleaned 2 passes through the through holes 24 provided in the endless belt 6. Then, the bucket elevator 25 collects it, and the bucket elevator 25 transfers it to the separator 26 provided above. The collected cleaning and cleaning material 21 contains fine fragments of the cleaning and cleaning material crushed when it is projected onto the cleaning and cleaning object 2 and fine metal rust powder that has peeled off the surface of the cleaning and cleaning material 2. is doing.

The separator 26 is for sieving the particle size of the collected abrasive cleaning material 21, and the recovered abrasive cleaning material 21 is mixed in the recovered abrasive cleaning material 21 while falling in the separator 26. The crushed material of the abrasive cleaning material having a light weight is removed, and only the abrasive cleaning material 21 having a constant particle diameter is transferred by the screw conveyor 27 or the like and supplied to the projector 23 again. In addition, 28 is a rotary screen for separating dust and cleaning material to be recycled, and 29 is a dust chamber for separating large particles and dust.

[0019]

[Action]

 In the initial state before the start of cleaning, the piston shaft 16 is in an extended state as shown in FIG. 3, and the contact start point P between the endless belt 6 and the side drums 4 and 5 is the front roller 9. It is located in the vicinity. When the to-be-cleaned product 2 is supplied from the to-be-cleaned product supply hopper 17 into the to-be-cleaned product storage space 10 of the cleaning barrel 3, the reversible rotation motor 32 rotates the drive roller 7 in the direction of arrow A. Thus, the endless belt 6 runs in the direction of arrow C, and the side drums 4 and 5 in contact with the endless belt 6 rotate in the direction of arrow E. As the endless belt 6 travels, a rotational force is applied to the article-to-be-polished chamber 10, so that the article-to-be-polished 2 stored in the space 10 rolls while centrifugal force and frictional force between the endless belt 6 are generated. Although it is lifted up by and, because the gravity is applied to the to-be-polished product 2 at the same time, it falls when the ascent limit is reached. The to-be-cleaned product 2 that has fallen is repeatedly lifted upward and dropped while the endless belt 6 is running in the C direction.

By repeating the lifting and dropping of the article to be polished as described above, the article to be polished 2 is placed in a kind of agitated state, during which the polishing agent 21 from the projector 23 is applied to the article to be polished 2 Although the blasting is performed by blasting, the blasting barrel 3 is designed so that the contact start point P of the endless belt 6 is located higher than the point Q at which the lifted article to be blasted 2 falls. It is preferable. With such a design, even if the to-be-polished product 2 is a small object such as a screw or a washer or a thin object, the to-be-polished product 2 may be caught between the endless belt 6 and the side drums 4, 5. (The falling point Q of the to-be-polished product 2 is lower than the contact start point P between the endless belt 6 and the side drums 4 and 5 where the to-be-polished product 2 is likely to be bitten. There is no possibility that the item 2 exists above the contact start point P).

The abrasive cleaning material 21 projected on the article to be cleaned 2 passes through the through hole 24 of the endless belt 6 and is dropped and collected, and is transferred to the separator 26 by the bucket elevator 25 to be sorted and again. It is supplied to the projector 23. On the other hand, while the product to be cleaned 2 is being cleaned in the polishing barrel 3 as described above, the amount of the product to be cleaned 2 to be used for the next polishing is changed to the product to be cleaned. The transfer belt conveyer 19 transfers the product into the hopper 17 for supplying the product to be polished, and holds it in the hopper 17 until the current cleaning of the product 2 to be polished is completed.

When the piston shaft 16 of the air cylinder 15 is retracted after the end of the cleaning, the front roller 9 rotates together with the connecting arm 13 in the direction of arrow G, and descends to the position shown by the chain double-dashed line in FIG. To do. Next, the reversible rotation motor 32 rotates the drive roller 7 in the direction of arrow B, and the endless belt 6 travels in the direction of arrow D. Emitted from 10. Below the front roller 9, a receiver for the discharged to-be-cleaned object 2 or a conveyer for carrying out the discharged to-be-cleaned object 2 (neither is shown) is provided.

When the discharge of the to-be-polished product 2 is completed, the piston shaft 16 of the air cylinder 15 is moved to rotate the front roller 9 in the direction of arrow H, and the front roller 9 is again in the initial state before the cleaning. When returning to the position of the initial state, the to-be-polished product 2 to be subjected to the next to-and-clean is supplied from the to-be-polished-product supplying hopper 17 and the same to-and-clean process is repeated.

[0024]

[Effect of device]

 The shot blasting device of the present invention is provided with a hopper to be cleaned for holding the product to be polished for the next polishing in the polishing chamber. Unlike the shot blasting device, there is no risk that the product to be ground will be scattered during supply, and it is highly safe and can be easily unmanned. Further, the supply means for the article to be ground in the present invention does not require a height like that of a bucket loader, and since the projector is installed on the side wall of the grinding and sweeping chamber, the collected grinding and cleaning material can be re-supplied to the projector. As a result, the height of the bucket elevator can be reduced, and as a result, the height of the entire device can be reduced as compared with the conventional equipment. Since it can be provided, the shot blasting apparatus as a whole can be miniaturized in combination with the fact that a high bucket loader is not used. However, the method of supplying the to-be-cleaned product from the to-be-cleaned-product supply hopper requires a simpler device than the method of supplying the to-be-cleaned product by a bucket loader, and thus has an advantage of reducing the cost of the device. Further, in the apparatus of the present invention, the material to be ground for the next grinding and cleaning is held in the grinding and cleaning material supply hopper while the grinding and cleaning is performed, and the material is immediately removed from the hopper after the grinding and cleaning is completed. Since the cleaning products can be supplied, one cycle of the cleaning process can be shortened, and the processing efficiency of continuous cleaning can be improved.

[Brief description of drawings]

FIG. 1 is a schematic view of an embodiment of the shot blasting apparatus of the present invention.

FIG. 2 is a perspective view of a polishing and cleaning barrel portion in the device of the present invention.

FIG. 3 is an explanatory diagram showing an operating state of the polishing barrel.

[Explanation of symbols]

 1 polishing chamber 2 polishing product 3 polishing barrel 4, 5 side drum 6 endless belt 7 drive roller 8 tension roller 9 front roller 10 storage space for polishing product 17 hopper for supplying cleaning product 21 polishing material 23 Projector 34 Side wall of polishing room

Claims (1)

[Scope of utility model registration request] 1. An endless belt is stretched between rollers with each end along a part of the peripheral edge of a side drum, and the side drum is configured to be rotatable by the running of the endless belt, and the side drum and the endless belt. The polishing and sweeping chamber is equipped with a polishing and cleaning barrel that performs the cleaning and sweeping of the polishing and cleaning material by placing the polishing and cleaning material on the endless belt in the storage space for the polishing and cleaning material formed by In the shot blasting machine, above the polishing and cleaning barrel in the polishing and cleaning chamber, there is a hopper for supplying the polishing and cleaning product to supply the polishing and cleaning product to the polishing and cleaning barrel, and on the side wall of the polishing and cleaning chamber, A shot blasting device equipped with a throwing / injecting machine for throwing / injecting cleaning material.