JP3242627B2 - Intermittent rotation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermittent rotation device for moving a rotary table on which a work to be processed is mounted to a processing position and intermittently rotating the processing table at the processing position.

[0002]

2. Description of the Related Art In a sandblasting apparatus for polishing a work surface by injecting an abrasive to the work, a plurality of works are set on a turntable provided in a blast chamber, and the turntable is intermittently set. The rotating workpieces are polished one by one.

In the above blast device, a part of the turntable is made to come out of the blast chamber, and the work is exchanged on the projecting portion. It is necessary to have a worker at all times to exchange workpieces one by one, and because the part of the turntable is exposed from the blast chamber to the outside, the abrasive material leaks out. Cannot be prevented, and the working environment deteriorates.

An object of the present invention is to provide an intermittent rotating device for sand blast which can solve the above-mentioned problem by disposing a rotary table so as to be able to carry in and out of a blast chamber. The intermittent rotation device of the present invention can be applied to a device for processing a plurality of workpieces in order, in addition to a sandblasting device.

[0005]

According to the present invention, there is provided an intermittent rotating device comprising a base (3) which can enter and exit a machining position.
(3) The turntable (4) is freely mounted on the turntable (4).
Work supports (4) at equal intervals on an imaginary circle concentric with the rotation center of
1) and a roller (43) concentric with each workpiece support (41),
At the processing position, a sprocket (64) that can mesh with a roller row on the rotary table (4) is provided in a state where the rotary table (4) has entered the processing position together with the base (3). ) Is connected to an intermittent rotation drive device (6).

[0006] A plurality of bases (3) and (3) are provided on a movable base (2) movable in a direction perpendicular to the direction of intrusion into the processing position, and a turntable ( 4) can be selectively sent to the processing position.

To apply to a blasting apparatus, the processing position is set in a blast chamber (10) covered by a housing (14),
4) has an opening with a door (12) corresponding to the entrance of the turntable (4).
(11) may be provided.

[0008] Each of the work supporting portions may be rotatably arranged and connected to the rotation driving device (7).

[0009]

[Operation and Effect] In a state where the turntable (4) is on standby outside the processing position, a work is set on each work support portion (41) on the turntable (4). The turntable (4) is sent to the processing position. When the turntable (4) reaches the processing position, the sprocket waits
(64) and the roller row on the turntable (4) mesh with each other. When the sprocket (64) rotates intermittently, the turntable (4) also rotates intermittently.
When the rotation of the turntable (4) is stopped, that is, when the work is at a fixed position, necessary processing is performed on the work. 1 turntable (4)
When the machining is completed for all the workpieces by intermittently rotating by pitches, the turntable (4) is ejected from the machining position to be on standby, and the workpiece is replaced at the standby position to prepare for the next processing.

[0010] A plurality of bases (3) each having a turntable (4) mounted thereon are provided on a movable base (2) provided so as to be movable in a direction orthogonal to the direction of travel to the processing position. For example, a turntable (4) that waits on the outside while processing the workpiece at the processing position
Work exchange can be performed on the above, and work efficiency is improved.

When the present invention is applied to a blasting apparatus, a processing position is set in a blast chamber (10) covered by a casing (14), and the casing (14) is adapted to the entrance path of the turntable (4). If an opening (11) with a door (12) is provided, the blasting
The blast chamber (10) can be closed by closing the blast chamber, so that the abrasive material can be prevented from leaking to the outside.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention in a blast device (1) will be described below. 1 is a front view of the blast device (1), FIG. 2 is a plan view, and FIG. 3 is a right side view. The blasting device (1) selectively stops two turntables (4) and (4) provided with a plurality of work supporting portions (41) on the circumference in front of the blast chamber (10), The turntable (4) stopped in front of the blast chamber (10) is carried into the blast chamber (10), and the turntable (4) is intermittently stopped by the intermittent rotation device according to the present invention,
The work pieces are polished one by one, and when the polishing of all the works on the turntable (4) is completed, the turntable (4) is carried out from the blast chamber (10), and the turntable that has been waiting is moved to the blast chamber ( Carry in 10) and perform blasting in the same manner as above. The rotating workpiece discharged out of the blast chamber (10) is replaced to prepare for the next polishing.

The intermittent rotation device of the present invention is intermittently rotated by a row of rollers (43) arranged on the circumference of each turntable (4) and a general bus stop (61) arranged in the blast chamber (10). The sprocket (64) is configured to engage when the turntable (4) is carried into the blast chamber (10).

A blast chamber (10) is formed in the upper part of the vertically long housing (14). The blast chamber (10) has an open front surface and is provided with a vertically slidable door (12). The door (12) is connected to the opening / closing cylinder device (13).

In front of the housing (14), a movable platform (2) is provided on a rail (20) laid on the floor surface at right angles to the housing (14),
Two carry-in devices (21) and (21) are provided on the upper surface of the moving table (2). Turntable (4) via base (3) on each loading device (21)
Is installed. The moving table (2) is connected to a moving driving device (26), and one of the two rotating tables (4) is used for blast chamber (10).
Can be selectively located in the front opening (11).

Each loading device (21) is provided with a roller shaft (23) having flanged receiving roller portions (22) (22) at both ends in parallel in a horizontal plane, and is driven by a motor (24). Engage the orbiting chain (25) with each roller shaft (23) and rotate them all at once.
3) The upper article is transported in a direction orthogonal to the moving direction of the moving table (2). The base (3) is provided with a receiving roller portion (2) of each roller shaft (23).
2) It is placed over (22), and the base (3) is guided straight by the flange (22a) of the roller portion (22).

The turntable (4) is formed in a disk shape, and its center is rotatably supported by a rotation support cylinder (32) which is set up at the center on the base (3). On the outer periphery of the turntable (4), a plurality of, in this embodiment, 12 work support portions (41) are provided at equal intervals on an imaginary circle concentric with the turntable. The work support (41) is
It is provided at the upper end of a rotating shaft (75) that freely penetrates (4), and a roller (43) and a chain sprocket (76) are mounted below the rotating shaft (75). The roller (43) is rotatably fitted on the rotating shaft (75), and the chain sprocket
(76) is fixed to the rotating shaft (75).

The center of a circular rotator (33) is rotatably fitted in the rotation support cylinder (32). The rotating body (33) has a small diameter part
(33a) and a large-diameter portion (33b), and chains (35) and (36) are provided endlessly around both outer peripheral surfaces. Small diameter part (3
The chain sprocket (76) on the rotating shaft (75) is engaged with the chain (35) in 3a).

In the blast chamber (10), an auxiliary loading device (5) for guiding the base (3) and the turntable (4) to the back from the front opening (11) is provided on the movable base (2). It is arranged at the same height position as the loading device (21). The auxiliary loading device (5) is, like the loading device (21), a roller shaft provided in parallel in a horizontal plane.
(52) A receiving roller with a flange corresponding to the width of the base (3)
(51) Provide a (51), and a circling chain (5
By 4), the roller shafts (52) are simultaneously rotated.

The bottom surface of the blast chamber (10) is inclined toward the center, and the sprocket connected to the intermittent rotation drive (6) is located at a depth with respect to the front opening (11) of the blast chamber (10).
(64) is provided corresponding to the height of the roller (43) of the turntable (4). The intermittent rotation drive (6) is installed in the blast chamber (1
The rotating shaft (63) is rotatably supported by penetrating the inclined bottom surface of (0), and a motor (62) is connected to a lower end of the rotating shaft (63) via a general bus stop (61). A sprocket (64) is fixed to the upper end of the rotating shaft (63), and the sprocket (64) of the embodiment is
Has six teeth and can be engaged with the row of rollers (43) on the turntable (4).

A rotary cylinder (71) is provided concentrically with the rotary shaft (63), and the lower end of the rotary cylinder (71) is connected to a motor (7) via a chain (73).
The chain sprocket (7) is connected to the base (3) and meshes with the lower chain (36) of the rotating body (33) on the base (3).
4) is fixed. The above motor (72), chain (73),
Rotating cylinder (71), chain sprocket (74), lower chain
(36), the rotating body (33), the upper chain (35), and the chain sprocket (76) constitute a rotation driving device (7) for rotating the work supporting portion (41).

In the blast chamber (10), one or a plurality of blast nozzles (not shown) are provided aiming at a work at a specific position on the turntable (4) carried into the blast chamber (10). ing. Further, the blast chamber (10) is connected with an abrasive cleaning device, a dust collecting device, etc., but has no direct relation to the present invention, so that the description is omitted.

Thus, a work (not shown) to be polished is set on each work supporting portion (41) of the turntables (4) and (4) on the moving table (2). One turntable (4) is positioned corresponding to the front opening (11) of the blast chamber (10), and the loading device (2
By driving 1), the turntable 4 is carried into the blast chamber 10 together with the base 3. The auxiliary loading device (5) is driven simultaneously with the driving of the loading device (21), and the auxiliary loading device is moved from the loading device (21).
Hand over the base (3) to (5).

When the auxiliary loading device 5 together with the base 3 reaches the inside of the blast chamber 10, the rollers 43 on the turntable 4 are reached.
A sprocket (64) meshes with the row, and a chain sprocket (74) meshes with the lower chain (36) of the rotating body (33). The door (12) is closed by the opening / closing cylinder device (13).

With the motor (62) and the general bus top (61),
When the sprocket (64) rotates intermittently, the turntable (4) also rotates intermittently, and the work on the work support (41) intermittently revolves. Also, the chain sprocket (74) is driven by the motor (72).
When the rotor rotates, the rotating body (33) continuously rotates irrespective of the rotation of the turntable (4), the chain sprocket (76), the rotating shaft (75)
The work supporting portion (41), that is, the work rotates through the work. By the above operation, the work of the turntable (4) intermittently revolves while rotating, and is polished at the stop position targeted by the blast nozzle.

When polishing of all the works on the turntable (4) is completed, the auxiliary loading device (5) and the blast chamber (10)
Empty loading device (2) waiting at the front opening (11)
1) is reversed, and the turntable (4) is transferred from the auxiliary loading device (5) to the loading device (21) together with the base (3).

The moving table (2) is moved to stop the next rotating table (4) in front of the blast chamber (10), and the same operation as described above is repeated. The polished work is removed from the waiting moving table (2), and an unpolished work is set.

The above-mentioned sand blasting apparatus is used in a blast chamber.
Turn the intermittent rotating sprocket (64) waiting in (10)
(42) Because the upper roller row is meshed, even if the abrasive material bites between the sprocket (64) and the roller (43),
It does not cause a trouble that hinders rotation, such as when the abrasive is engaged in the meshing portion of the gears.
Also, since the turntable (4) can be separated from the sprocket (64), the work can be exchanged by moving the entire turntable (4) out of the blast chamber (10), thereby improving workability of work change. Good.

The entire turntable (4) is accommodated in the blast chamber (10), and the blast chamber (10) can be closed with the door (12) to shut off the outside air. Deterioration can be prevented.

When the two turntables (4) and (4) are selectively carried into the blast chamber (10) as in the embodiment, the work can be set on the turntable in a standby state. Rate can be increased. In addition, three or more rotating tables are placed on the moving table (2).
(4) can be arranged and carried in and out of the blast chamber (10) in order for polishing.

The present invention can be embodied as long as it is a processing apparatus capable of processing a workpiece set on the turntable (4) while intermittently rotating, regardless of the blast apparatus.

[Brief description of the drawings]

FIG. 1 is a front view of a sandblasting device.

FIG. 2 is a plan view of the same.

FIG. 3 is a right side view of the same.

FIG. 4 is a cross-sectional view showing an engaged state between the turntable and the intermittent rotary gear.

FIG. 5 is a plan view of a blast chamber.

FIG. 6 is a plan view of a general bus stop and a chain sprocket on an intermittent rotation shaft.

[Explanation of symbols]

 (10) Blast room (21) Loading device (3) Base (4) Turntable (5) Auxiliary loading device (6) Intermittent rotation drive

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-95879 (JP, A) JP-A-10-217121 (JP, A) JP-A-2-80832 (JP, A) JP-A-3-3 26439 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B23Q 1/00-1/76 B24C 3/20-3/24

Claims (4)

(57) [Claims] 1. A base (3) capable of entering and exiting a processing position.
And a turntable (4) is rotatably mounted on the base (3), and the work support portions (41) and A roller (43) is provided concentrically with each work support part (41), and a rotary table is mounted together with the base (3) at the processing position.
A sprocket (64) capable of meshing with a row of rollers on the turntable (4) is provided with the (4) entering the processing position, and an intermittent rotation drive (6) is connected to the sprocket (64). Intermittent rotation device. 2. A plurality of bases (3) are provided on a movable base (2) provided so as to be movable in a direction orthogonal to a direction of travel to a processing position, and selectively sent to the processing position. Item 1
The intermittent rotation device according to [1]. The processing position is in a blast chamber (10) covered by a housing (14), and the housing (14) is open corresponding to an intrusion path of the turntable (4). The intermittent rotation device according to claim 1 or 2, wherein a door (12) is provided on the (11). 4. Each of the work supporting portions (41) is rotatably provided and connected to a rotation driving device (7).
The intermittent rotation device according to any one of the above.