JP7296543B2 - Blasting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blasting device for cleaning an object to be ground with an abrasive material.

A blasting apparatus has been proposed in which a plurality of blasting nozzles are provided in a rotating cylindrical can body to descend a workpiece in the can body (see, for example, Patent Document 1).

Registered Utility Model No. 3208678

In the blasting apparatus described above, since a plurality of blasting nozzles are provided in the can body, power consumption is increased.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a power-saving blasting apparatus.

In order to solve the above-mentioned problems, a blasting apparatus in one embodiment of the present invention includes a rotating barrel cage housing a plurality of objects to be ground, and a disk provided with a plurality of blades. a projection rotor provided in the barrel cage for projecting the abrasive toward the object to be ground using the centrifugal force of the disk.

A housing for supporting the barrel basket and the projection rotor is further provided, wherein the barrel basket includes a basket body having an opening through which a plurality of objects to be ground are introduced and discharged, a lid portion for opening and closing the opening, and an opening/closing unit provided in the housing for operating the lid to open and close the opening, and a control unit for controlling the operation of the opening/closing unit.

The lid portion includes a cover that abuts on the opening to close the opening and is separated from the opening to open the opening; a holding portion provided on the basket body; a held portion that, when held by the holding portion, causes the cover to come into contact with the opening to close the opening; and the control portion operates the opening/closing portion. , by pulling up the cover to release the connection between the holding portion and the held portion, separating the cover from the opening to open the opening, and pushing down the cover to The holding portion and the held portion may be coupled, and the cover may be brought into contact with the opening to close the opening.

The lid is provided rotatably with respect to the basket body, and by rotating, it abuts against the opening to close the opening and moves away from the opening to open the opening. a cover, a holding portion provided in the basket body, and a held portion provided in the cover, and when held by the holding portion, the cover abuts against the opening to close the opening. a portion, wherein the opening/closing portion includes an opening/closing arm that is rotatable with respect to the housing; and the control portion operates the opening/closing arm to push up the cover, thereby opening the holding portion and the held portion are released, the cover is moved away from the opening to open the opening, and the cover is pushed down to join the holding portion and the held portion. , the opening may be closed by bringing the cover into contact with the opening.

The lid portion includes a cover that abuts against the opening to close the opening and is separated from the opening to open the opening, and one end connected to the basket body and the other end connected to the cover. and a coil spring connected to the opening, wherein the control unit operates the opening/closing unit to lift the cover against the tensile force of the coil spring, thereby separating the cover from the opening. The opening may be closed by opening the portion and bringing the cover into contact with the opening by the tensile force of the coil spring.

The cage body of the barrel cage includes a cylindrical portion and a pair of truncated cone portions provided on both sides of the cylindrical portion in the axial direction of rotation of the barrel cage and tapering away from the cylindrical portion, each truncated cone The inner surface of the slant portion of the portion is inclined away from the cylindrical portion toward the downstream side in the rotation direction of the barrel basket, and guides the object to be ground to the bottom portion of the cylindrical portion when the barrel basket rotates. A plurality of guide plates may be provided.

According to the present invention, it is possible to provide a power-saving blasting device.

1 shows a side view of a blasting device according to an embodiment of the present invention; FIG. 1 shows a front view of a blasting device according to an embodiment of the present invention; FIG. It is explanatory drawing of the barrel cage which concerns on embodiment of this invention. FIG. 4 is an explanatory diagram of a projection rotor according to the embodiment of the present invention; FIG. 5 is an explanatory view of the discharging/inserting operation of the object to be ground in the blasting apparatus according to the embodiment of the present invention; FIG. 11 is an explanatory view of the discharging/inserting operation of the object to be ground in the blasting apparatus according to the modified example; FIG. 11 is an explanatory view of the discharging/inserting operation of the object to be ground in the blasting apparatus according to the modified example;

A blasting apparatus 1 according to an embodiment of the present invention will be described with reference to the drawings.

<Overall composition>
First, the overall configuration of the blasting apparatus 1 according to this embodiment will be described.

FIG. 1 is a side view of the blasting device 1 illustrating the internal structure of the cabinet body 2. FIG.
FIG. 2 is a front view of the blasting device 1 showing the internal structure of the cabinet body 2. As shown in FIG.

As shown in FIGS. 1 and 2, the blasting apparatus 1 includes a cabinet body 2 which is a housing, a control section 3, a cleaning section 10 for polishing an object to be cleaned, and a cleaning material for collecting and feeding the cleaning section 10. and a recovery supply unit 20 for supplying. The cleaning section 10 and the collection/supply section 20 are supported by the cabinet body 2 .

The front of the cabinet 2 is provided with an input door 2A and an input basket 2B for inputting the object to be ground, and a discharge door 2C for discharging the object to be ground. The input door 2A is opened and closed by a first air cylinder 2D. The insertion basket 2B is rotationally driven by the first drive motor 2E, and loads a plurality of objects to be ground into a barrel basket 31, which will be described later. The discharge door 2C is rotated and opened/closed by the second air cylinder 2F.

The control unit 3 includes a CPU (Central Processing Unit) and a storage unit. The CPU controls the entire blasting apparatus 1 by reading and executing programs stored in the storage unit.

The abrasive cleaning section 10 includes a rotary section 30 , an opening/closing section 40 , a projection section 50 and a discharge section 60 .

The rotating portion 30 includes a barrel basket 31 , a second drive motor 32 and a third drive motor 33 .

The barrel basket 31 includes a basket body 34 having an opening 34a into which a plurality of objects to be ground are introduced and discharged, and a lid 35 for opening and closing the opening 34a.

The cage body 34 includes a cylindrical portion 36 and a pair of truncated cone portions 37 provided on both sides of the cylindrical portion 36 in the axial direction of rotation of the barrel cage 31 and tapering away from the cylindrical portion 36 (see also FIG. 3). ). The cage body 34 is formed with a through-hole 34 b passing through the cage body 34 along the axial direction of rotation of the barrel cage 31 . The opening 34 a is formed in the cylindrical portion 36 . The cylindrical portion 36 is formed with a plurality of holes through which the abrasive can drop.

FIG. 3(a) is an internal view of one truncated cone portion 37, and FIG. 3(b) is a cross-sectional view of the barrel cage 31 taken along the vertical direction so as to include the rotation axis thereof. In FIG. 3(a), the barrel basket 31 rotates along the direction of the arrow R1, and in FIG. 3(b), the barrel basket 31 rotates so that its upper end faces the front side of the figure and its lower end faces the back side of the figure. do.

As shown in FIG. 3, a plurality of guide plates 37B are provided on the inner surface of the inclined surface portion 37A of each truncated cone portion 37. It is A plurality of guide plates 37B are provided so as to form an inverted V shape. A plurality of guide plates 37B guide the object to be ground to the bottom of the cylindrical portion 36 when the barrel cage 31 rotates.

The second drive motor 32 and the third drive motor 33 are provided on the front and back sides of the cabinet body 2 . The barrel basket 31 is rotated by the second drive motor 32 and the third drive motor 33 .

As shown in FIG. 1, the lid portion 35 includes a cover 35A, a holding portion 35B, and a held portion 35C. The cover 35A is rotatably provided with respect to the basket body 34, and by rotating, it abuts against the opening 34a to close the opening 34a and moves away from the opening 34a to open the opening 34a. The holding portion 35B is provided on the basket body 34 . The holding portion 35B is composed of a leaf spring having a projection projecting toward the cover 35A. The holding portions 35B are provided, for example, at both ends of the cylindrical portion 36 in the axial direction. The held portion 35C is provided at the tip of the cover 35A (the end on the side opposite to the movable shaft) and has a semicircular cross section. The held portion 35C is provided corresponding to the holding portion 35B. A projecting portion 35D projecting from the cover 35A is provided at the tip of the cover 35A and at a position where the held portion 35C is not provided.

The held portion 35C is lowered via the protrusion 35D, and reaches the lower side of the protrusion over the protrusion while elastically deforming the holding portion 35B, whereby the held portion 35C is held by the holding portion 35B. state. The held portion 35C is lifted via the protrusion 35D, and reaches the upper side of the protrusion over the protrusion while elastically deforming the holding portion 35B, thereby releasing the holding of the held portion 35C by the holding portion 35B. be done.

The opening/closing part 40 is provided in the cabinet body 2 and includes a third air cylinder 41 and an opening/closing arm 42 . The opening/closing arm 42 is configured to be rotated by the third air cylinder 41 . The opening/closing portion 40 releases the coupling between the holding portion 35B and the held portion 35C by pushing up the projection portion 35D of the cover 35A with the opening/closing arm 42, and separates the cover 35A from the opening portion 34a to close the opening portion 34a. By opening and pushing down the protrusion 35D of the cover 35A, the holding portion 35B and the held portion 35C are coupled, and the cover 35A is brought into contact with the opening 34a to close the opening 34a.

As shown in FIG. 2 , the projection section 50 includes a fourth drive motor 51 , a supply screw 52 , a fifth drive motor 53 and a projection rotor 54 .

The fourth drive motor 51 rotates the supply screw 52 to supply the cleaning material from the recovery/supply section 20 to the projection rotor 54 . The supply screw 52 is provided inside the through hole 34b. The fifth drive motor 53 is provided inside the through hole 34b. The projection rotor 54 is provided at a position corresponding to the cylindrical portion 36 within the through hole 34b.

4(a) is a schematic diagram of the projection unit 50, and FIG. 4(b) is a side view of the blade 58 and disk 59. FIG.

The projection rotor 54 is provided with an impeller 56 that is rotated by the drive shaft 55 of the fifth drive motor 53 and radiates the abrasive in the outer peripheral direction, and an opening 57a that sets the direction in which the abrasive radiated from the impeller 56 is projected. It comprises a deflector 57 , a blade 58 for applying centrifugal force to the abrasive material delivered from the deflector 57 and projecting it, and a disc-shaped disk 59 fixed to the drive shaft 55 so as to rotate the blade 58 . With this configuration, as shown by the dotted line in FIG. 4(b), the abrasive is projected onto the object to be ground located at the bottom of the cylindrical portion 36 with a spread of about 60 degrees.

A substantially cylindrical member, for example, is arranged in the through hole 34b, and the supply screw 52, the fifth drive motor 53, and the projection rotor 54 are arranged in the member. An opening is formed in the bottom of the portion corresponding to the cylindrical portion 36 of the member, and the abrasive from the projection rotor 54 is projected toward the bottom of the cylindrical portion 36 through the opening.

As shown in FIGS. 1 and 2, the discharging section 60 is composed of a conveying section 61 such as a conveyor provided below the barrel basket 31 and a sixth driving motor 62 for driving the conveying section 61. The object to be cleaned is conveyed, and the object to be cleaned is discharged outside the cabinet main body 2 through the discharge door 2C.

The recovery supply unit 20 includes a recovery screw 21 , an elevator 22 , an abrasive tank 23 and an abrasive chute 24 . The abrasive recovered by the recovery screw 21 is conveyed upward in the vertical direction by the elevator 22 and returned to the abrasive cleaning material tank 23 . The cleaning material is supplied from the cleaning material tank 23 to the cleaning material supply screw 52 through the cleaning material chute 24 .

<Ejection/insertion operation>
Next, the operation of ejecting and inserting the object to be ground in the blasting apparatus 1 will be described with reference to FIG. The discharging/throwing-in operation in the blasting apparatus 1 described below is executed by the control unit 3 controlling each component.

5A and 5B are explanatory diagrams of the discharge/load operation of the object to be ground in the blasting apparatus 1. FIG.

In FIG. 5(a), after finishing the polishing of a plurality of objects to be ground, the opening/closing arm 42 of the opening/closing portion 40 is rotated to rotate the cover 35A, thereby separating the holding portion 35B and the held portion 35C. are released, the cover 35A is separated from the opening 34a, and the opening 34a is opened. As shown in FIG. 5(b), the barrel basket 31 is rotated in the direction of the arrow to drop a plurality of cleaning bodies into the discharge section 60 through the opening 34a. The object to be cleaned is transported by the discharge part 60, and the object to be cleaned is discharged out of the cabinet main body 2 through the discharge door 2C.

As shown in FIG. 5(c), the barrel basket 31 is rotated in the direction of the arrow to turn the input basket 2B, and a plurality of uncleaned objects to be cleaned are moved into the barrel basket 31 through the input door 2A. put into As shown in FIG. 5(d), the barrel cage 31 is rotated in the direction of the arrow to rotate the open/close arm 42, rotate the cover 35A, and couple the holding portion 35B and the held portion 35C. , the cover 35A is brought into contact with the opening 34a to close the opening 34a. By rotating the barrel basket 31 and projecting the abrasive material from the projection rotor 54, a plurality of objects to be ground are ground.

<Effect>
According to the blasting apparatus 1 as described above, the disc 59 provided with a plurality of blades 58 is rotated, and the centrifugal force of the disc 59 is used to project the abrasive toward the object to be ground. A projection rotor 54 is provided in the barrel cage 31 . As a result, a large amount of abrasive material can be projected from the immediate vicinity of the object to be ground, so it is possible to provide the blasting apparatus 1 that saves power compared to a blasting apparatus that projects the abrasive material from a nozzle. For example, each nozzle has a power output of 3.7 kW and a blasting amount of 10 kg/min. is.

Since the control unit 3 is provided for controlling the operation of the opening/closing unit 40 that operates the lid 35 and opens and closes the opening 34a of the barrel basket 31, the opening and closing of the lid 35 of the barrel basket 31 can be automated. Workability of the cleaning work can be improved.

The control unit 3 operates the open/close arm 42 of the open/close unit 40, and the open/close arm 42 pushes up the protrusion 35D of the cover 35A, thereby releasing the connection between the holding portion 35B and the held portion 35C, thereby releasing the cover 35A. is separated from the opening 34a to open the opening 34a, and the protrusion 35D of the cover 35A is pushed down to couple the holding portion 35B and the held portion 35C, and the cover 35A is brought into contact with the opening 34a. Close the opening 34a. In this manner, the opening and closing of the lid portion 35 of the barrel basket 31 can be reliably executed.

A cage body 34 of the barrel cage 31 includes a cylindrical portion 36 and a pair of truncated cone portions 37 provided on both sides of the cylindrical portion 36 in the axial direction of rotation of the barrel cage 31 and tapering away from the cylindrical portion 36. The inner surface of the slope portion 37A of the truncated cone portion 37 is inclined away from the cylindrical portion 36 toward the downstream side in the rotation direction of the barrel basket 31, so that when the barrel basket 31 rotates, the object to be ground is inclined to the bottom of the cylindrical portion 36. A plurality of guide plates 37B are provided for guiding to. As a result, a plurality of objects to be ground can be gathered smoothly at the bottom of the cylindrical portion 36, and the objects to be ground can be turned over to evenly cover the entire surface of the object to be ground for a short period of time. Can be blasted with

It should be noted that the present invention is not limited to the above-described embodiments, and many modifications are possible within the scope of the gist of the present invention.

For example, the lid portion 35 and the opening/closing portion 40 of the above embodiment may be the lid portion 135 and the opening/closing portion 140 shown in FIG. The lid portion 135 includes a cover 135A, a holding portion 135B, a held portion 135C, and an engaged portion 135D. A plurality of holding portions 135B are provided on the basket main body 34 . The holding portion 135B is a spring catcher and is composed of a substantially U-shaped leaf spring. The held portion 135C is provided on the lower surface of the cover 135A corresponding to the holding portion 135B, and has a circular portion at the lower end. The engaged portion 135D is provided on the upper surface of the cover 135A. A part surrounded by a dashed-dotted circle in FIG. 6A is an enlarged view of the region X surrounded by a broken-line circle, and is a view of the region X viewed from the front side. As shown in the enlarged view, the engaged portion 135D has a substantially T shape when viewed from the front.

The circular portion of the held portion 135C fits into the lower portion of the holding portion 135B while expanding the holding portion 135B, whereby the held portion 135C is held by the holding portion 135B. The circular portion of the held portion 135C pulls out the circular portion from the holding portion 135B while expanding the holding portion 135B, thereby releasing the holding of the held portion 35C by the holding portion 35B.

The opening/closing part 140 is provided in the cabinet body 2 and includes a fourth air cylinder 141 and an engaging part 142 . The engaging portion 142 is provided at the tip of the fourth air cylinder 141 and has a substantially T-shaped through hole in front view as shown in the enlarged view of the area X in FIG. 6(a). The engaging portion 142 is lowered to the engaged portion 135D by the fourth air cylinder 141, the barrel basket 31 is rotated, and the engaged portion 135D is inserted into the through hole of the engaging portion 142, whereby the engaged portion 135D is lowered. is engaged with the engaging portion 142 .

The fourth air cylinder 141 pulls up the engaging portion 142 to release the connection between the holding portion 135B and the held portion 135C, move the cover 135A away from the opening 34a to open the opening 34a, and open the opening 34a. 4 The air cylinder 141 pushes down the engaging portion 142 to couple the holding portion 135B and the held portion 135C, and the cover 135A is brought into contact with the opening 34a to close the opening 34a.

Next, the operation of ejecting/inserting the object to be ground in the blasting apparatus 1 of this modified example will be described with reference to FIG. The discharging/throwing-in operation in the blasting apparatus 1 described below is executed by the control unit 3 controlling each component.

In FIG. 6A, after finishing the polishing of a plurality of objects to be polished, the fourth air cylinder 141 of the opening/closing portion 140 is operated to lower the engaging portion 142, rotate the barrel cage 31, and rotate the engaged portion. The joining portion 135D is engaged with the engaging portion 142. As shown in FIG. The engaging portion 142 is pulled up by the fourth air cylinder 141 to release the connection between the holding portion 135B and the held portion 135C, and the cover 135A is separated from the opening 34a to open the opening 34a. As shown in FIG. 6(b), the barrel basket 31 is rotated in the direction of the arrow to drop a plurality of cleaning bodies into the discharge section 60 through the opening 34a. The object to be cleaned is transported by the discharge part 60, and the object to be cleaned is discharged out of the cabinet main body 2 through the discharge door 2C.

As shown in FIG. 6(c), the barrel basket 31 is rotated in the direction of the arrow to rotate the input basket 2B, and a plurality of objects to be ground that have not been cleaned are moved into the barrel basket 31 through the input door 2A. put into As shown in FIG. 6(d), the barrel basket 31 is rotated in the direction of the arrow, and the cover 135A is pushed down by the fourth air cylinder 141 to join the holding portion 35B and the held portion 35C, thereby removing the cover 135A. It is brought into contact with the opening 34a to close the opening 34a. Then, the barrel basket 31 is rotated to pull up the engaging portion 142 to separate the engaged portion 135D from the engaging portion 142 . By projecting the abrasive material from the projection rotor 54 while rotating the barrel cage 31, a plurality of objects to be ground are ground. This configuration can also provide the same effects as the blasting apparatus 1 of the above embodiment.

Further, the lid portion 35 and the opening/closing portion 40 of the above embodiment may be the lid portion 235 and the opening/closing portion 240 shown in FIG. The lid portion 235 includes a cover 235A, a coil spring 235B, a cover mounting portion 235C, and an engaged portion 235D. The coil spring 235B has one end connected to the basket body 34 and the other end connected to the cover 235A. A pair of coil springs 235B are provided, for example, and one end of each coil spring 235B is connected to each truncated cone portion 37 (FIG. 2). 235 C of cover mounting parts are provided in the basket main body 34, and are comprised by the cyclic|annular protrusion which supports the outer peripheral edge of the cover 235A. The engaged portion 235D is provided on the upper surface of the cover 235A, and has a substantially T-shape when viewed from the front, similar to the above-described engaged portion 135D.

The opening/closing part 240 is provided in the cabinet body 2 and includes a fifth air cylinder 241 and an engaging part 242 . The engaging portion 242 is provided at the tip of the fourth air cylinder 241 and has a substantially T-shaped through hole in a front view, like the engaging portion 142 described above. The engaging portion 242 is lowered to the engaged portion 235D by the fifth air cylinder 241, the barrel basket 31 is rotated, and the engaged portion 235D is inserted into the through hole of the engaging portion 242, whereby the engaged portion 235D is lowered. is engaged with the engaging portion 242 .

The fifth air cylinder 241 pulls up the engaging portion 242 against the tensile force of the coil spring 235B, thereby separating the cover 235A from the opening 34a, opening the opening 34a, and engaging the fifth air cylinder 241. By lowering the portion 242, the cover 235A is brought into contact with the opening 34a, and the tensile force of the coil spring 235B closes the opening 34a. After the cover 235A is pulled up by the fifth air cylinder 241, the barrel basket 31 is rotated to lower the cover 235A and place it on the cover mounting portion 235C. The engagement with the engaging portion 235D is released, and the fifth air cylinder 241 pulls up the engaging portion 242. As shown in FIG. In this manner, the cover 235A is placed on the cover placing portion 235C.

Next, the operation of ejecting/inserting the object to be ground in the blasting apparatus 1 of this modified example will be described with reference to FIG. The discharging/throwing-in operation in the blasting apparatus 1 described below is executed by the control unit 3 controlling each component.

In FIG. 7(a), after finishing the polishing of a plurality of objects to be polished, the fifth air cylinder 241 of the opening/closing portion 240 is operated to lower the engaging portion 242, rotate the barrel cage 31, and rotate the engaged portion. The joining portion 235D is engaged with the engaging portion 242. As shown in FIG. The engaging portion 242 is lifted by the fifth air cylinder 241 against the tensile force of the coil spring 235B to separate the cover 235A from the opening 34a and open the opening 34a. As shown in FIG. 7B, the barrel basket 31 is rotated in the direction of the arrow so that the cover mounting portion 235C is positioned directly below the cover 235A, and the cover 235A is lowered by the fifth air cylinder 241. The cover 235A is placed on the cover placement portion 235C.

As shown in FIG. 7(c), the barrel basket 31 is rotated in the direction of the arrow to drop a plurality of cleaning bodies into the discharge section 60 through the opening 34a. The object to be cleaned is transported by the discharge part 60, and the object to be cleaned is discharged out of the cabinet main body 2 through the discharge door 2C. At the same time, the fifth air cylinder 241 is operated to raise the engaging portion 242 . As shown in FIG. 7(d), the barrel basket 31 is rotated in the direction of the arrow to rotate the input basket 2B, and a plurality of objects to be ground that have not been cleaned are moved into the barrel basket 31 through the input door 2A. put into

As shown in FIG. 7(e), the barrel basket 31 is rotated in the direction of the arrow, the fifth air cylinder 241 is operated to lower the engaging portion 242, the barrel basket 31 is rotated, and the engaged portion 235D is lowered. Engage with the engaging portion 242 . The engaging portion 242 is pulled up by the fifth air cylinder 241 against the tensile force of the coil spring 235B to separate the cover 235A from the opening 34a. As shown in FIG. 7(f), the barrel basket 31 is rotated to position the opening 34a directly below the cover 235A, the cover 235A is lowered by the fifth air cylinder 241, and the opening 34a is closed by the cover 235A. The tensile force of the coil spring 235B brings the cover 235A into close contact with the opening 34a. By projecting the abrasive material from the projection rotor 54 while rotating the barrel cage 31, a plurality of objects to be ground are ground. This configuration can also provide the same effects as the blasting apparatus 1 of the above embodiment.

1: Blast device 2: Cabinet body 3: Control unit 31: Barrel basket 34: Basket body 34a: Opening 35, 135, 235: Lid 35A, 135A, 235A: Cover 35B, 135B: Holding portion 35C, 135C: To-be-held portion 36: Cylindrical portion 37: Conical frustum portion 37B: Guide plate 40, 140, 240: Opening/closing portion 54: Projection rotor 58: Blade 59: Disk 235B : Coil spring

Claims (4)

a barrel cage that accommodates a plurality of objects to be cleaned and rotates;
A disk provided with a plurality of blades is provided, and the disk is rotated to project the abrasive material toward the object to be ground using the centrifugal force of the disk, and a projection rotor provided in the barrel cage. ,
a housing that supports the barrel cage and the projection rotor,
The barrel basket is
a cage body having openings into which a plurality of objects to be cleaned are introduced and discharged;
and a lid that opens and closes the opening,
an opening/closing unit provided in the housing for operating the lid to open and close the opening;
A control unit that controls the operation of the opening and closing unit,
The lid is
a cover abutting the opening to close the opening and spaced apart from the opening to open the opening;
a holding portion provided in the basket body;
a held portion provided on the cover, and when held by the holding portion, the cover abuts against the opening to close the opening;
The control unit operates the opening/closing unit to
By pulling up the cover, the connection between the holding portion and the held portion is released, the cover is separated from the opening to open the opening, and
A blasting device, wherein the holding portion and the held portion are coupled by pushing down the cover, and the cover is brought into contact with the opening to close the opening. a barrel cage that accommodates a plurality of objects to be cleaned and rotates;
A disk provided with a plurality of blades is provided, and the disk is rotated to project the abrasive material toward the object to be cleaned by utilizing the centrifugal force of the disk, and a projection rotor provided in the barrel cage. ,
a housing that supports the barrel cage and the projection rotor,
The barrel basket is
a cage body having openings into which a plurality of objects to be cleaned are introduced and discharged;
and a lid that opens and closes the opening,
an opening/closing unit provided in the housing for operating the lid to open and close the opening;
A control unit that controls the operation of the opening and closing unit,
The lid is
a cover that is rotatably provided with respect to the basket body, and that rotates to abut on the opening to close the opening and separate from the opening to open the opening;
a holding portion provided in the basket body;
a held portion provided on the cover, and when held by the holding portion, the cover abuts against the opening to close the opening;
The opening/closing unit includes an opening/closing arm rotatable with respect to the housing,
The control unit operates the opening/closing arm to
By pushing up the cover, the connection between the holding part and the held part is released, the cover is separated from the opening to open the opening, and
A blasting device, wherein the holding portion and the held portion are coupled by pushing down the cover, and the cover is brought into contact with the opening to close the opening. a barrel cage that accommodates a plurality of objects to be cleaned and rotates;
A disk provided with a plurality of blades is provided, and the disk is rotated to project the abrasive material toward the object to be cleaned by utilizing the centrifugal force of the disk, and a projection rotor provided in the barrel cage. ,
a housing that supports the barrel cage and the projection rotor,
The barrel basket is
a cage body having openings into which a plurality of objects to be cleaned are introduced and discharged;
and a lid that opens and closes the opening,
an opening/closing unit provided in the housing for operating the lid to open and close the opening;
A control unit that controls the operation of the opening and closing unit,
The lid is
a cover abutting the opening to close the opening and spaced apart from the opening to open the opening;
a coil spring having one end connected to the cage body and the other end connected to the cover,
The control unit operates the opening/closing unit to
opening the opening by pulling the cover away from the opening by pulling up the cover against the tensile force of the coil spring; and
A blasting device that closes the opening by bringing the cover into contact with the opening by the tensile force of the coil spring . The basket body of the barrel basket is
a cylinder;
a pair of truncated cone portions provided on both sides of the cylindrical portion in the axial direction of rotation of the barrel cage and tapering away from the cylindrical portion;
The inner surface of the sloped portion of each truncated cone portion is inclined so as to separate from the cylindrical portion toward the downstream side in the rotation direction of the barrel basket, and the object to be ground is inclined to the bottom of the cylindrical portion when the barrel basket rotates. 4. A blasting apparatus according to any one of claims 1 to 3 , wherein a plurality of guide plates are provided for guiding to.

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