JP2838577B2 - Work unloading device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an unloading device that unloads a work from a processing machine to an unloading chute.

<Prior Art> For example, when performing automatic machining of gears, as shown in FIG. 7, a gear (work) 3 that has been machined by a chamfering machine 1 is unloaded by a work unloading device 5 to a discharge chute (chute) 7.
Is discharged. The work unloading device 5 includes an L-shaped arm 9.
Is rotated 90 degrees about a vertical axis, whereby the magazine holding the work 3 reciprocates between the main shaft 12 of the chamfering machine 1 and the chute 7.

As shown in FIG. 8, the magazine is provided with a shutter 15 on which the work 3 is placed and which is opened and closed by driving the cylinder 13. The shutter 15 is closed in the vicinity of the main shaft 12 and the processed work 3 is held in the magazine 11. When the magazine 9 is positioned directly above the chute 7 by the rotation of the arm 9, the shutter 15 is opened and the work 3 is shot. It is discharged to 7. Reference numeral 17 in FIG. 8 denotes a stopper for regulating the rotation of the arm 9 to 90 degrees.

By using the work unloading device 5 described above, the processed work 3 can be automatically discharged from the chamfering machine 1 to the chute 7, and the work 3 is transferred to the next processing machine (for example, a shaving machine). Automatic machining of gears becomes possible.

<Problems to be Solved by the Invention> In the conventional work unloading device 5, since the magazine 15 is provided with the shutter 15 that is opened and closed by the cylinder 13, the movable unit is provided with the wiring pipe of the cylinder 13, which increases the weight and It was also disadvantageous in terms of maintainability and appearance. Further, since a plurality of drive sources are required for the rotation of the arm 9 and the opening and closing of the shutter 15, the control system becomes complicated and the operation time becomes longer.

<Means for Solving the Problems> The configuration of the present invention for solving the above problems includes a rotary actuator having a drive shaft around a vertical axis, a rotary plate fixed to the drive shaft, and one end of the drive shaft. An arm member that is rotatably supported and extends in the horizontal direction, a magazine that is rotatably supported at the end of the arm member around a horizontal axis and on which a work is placed, and that is rotated around a vertical axis at an intermediate portion of the arm member A rotating shaft member that is freely supported, and one end is rotatably supported around a vertical axis at a non-rotation center position of the rotation plate, and the other end is vertical at a non-rotation center position of the rotation shaft member. A first connecting rod rotatably supported around the axis, and one end rotatably supported about a vertical axis at a non-rotation center position of the rotating shaft member and at a position different from the supporting position of the first connecting rod. And the other end is rotatable around the horizontal axis at the non-rotation center position of the magazine , A rotating plate provided over the arm member and the rotating shaft member and connected by the first connecting rod, and a rotating member connected by the rotating shaft member and the second connecting rod. A spring for urging the shaft member and the magazine in a non-rotational state, and an arm member integrally rotated with the rotation plate via the rotation shaft member, the first connecting rod, and the spring within a predetermined rotation range of the drive shaft. And the rotation plate is rotated relative to the arm member by restricting the rotation of the arm member outside the predetermined rotation range of the drive shaft, and the rotation shaft is rotated via the first connecting rod against the urging force of the spring. A stopper member for rotating the member and rotating the magazine via the second connecting rod to discharge the work in the magazine is provided.

<Operation> The rotating plate and the rotating shaft member connected by the first connecting rod and the rotating shaft member and the magazine connected by the second connecting rod are non-rotated by the urging force of the spring to rotate the arm member and the arm member. When the rotary plate is rotated via a drive shaft by driving the rotary actuator by integrating the moving plate, the arm member is rotated and the magazine is positioned at a predetermined position for loading the work. By mounting the work on the magazine and rotating the rotating plate in the opposite direction, the arm member rotates until it is regulated by the stopper member, and when the arm member is regulated by the stopper member, the magazine releases the work to the predetermined position. Position. When the drive shaft is further rotated by driving the rotary actuator, the rotation plate continues to rotate with respect to the arm member. The rotating shaft member is rotated via the first connecting rod, and the magazine is further rotated via the second connecting rod, so that the work in the magazine is discharged at a predetermined position for discharging the work.

<Embodiment> FIG. 1 is a plan view of a work unloading device according to an embodiment of the present invention, FIG. 2 is a view taken along the line II-II of FIG. 1, and FIG. FIG. 4 is a view taken along the line IV-IV in FIG. 1, FIG. 5 is a view taken along the line VV in FIG. 2, FIG. FIG. 1 is a view taken in the direction of arrow VI in FIG. The same members as those shown in FIGS. 7 and 8 are denoted by the same reference numerals, and redundant description is omitted.

As shown in FIGS. 1 and 2, the rotary actuator 21 is provided with a drive shaft 23 which is turned around a vertical axis, and a disc-shaped turn plate 25 is fixed to the upper end of the drive shaft 23. I have. One end of an L-shaped arm 27 (arm member) extending in the horizontal direction is rotatably supported on the drive shaft 23, and an intermediate shaft 29 around a vertical axis is provided at a corner (middle part) of the arm 27. It is rotatably supported. A substantially semicircular swing plate 31 is fixed to the intermediate shaft 29 on the upper surface side of the arm 27, and a swing arm 33 is fixed to the intermediate shaft 29 on the lower surface side of the arm 27. The intermediate shaft 29, the swing plate 31, and the swing arm 33 constitute a rotating shaft member.

One end of the first connecting rod 35 is rotatably supported around a vertical axis at a position (non-rotation center position) shifted from the rotation center of the rotation plate 25, and is shifted from the rotation center of the swing plate 31. The other end of the first connecting rod 35 is rotatably supported around the vertical axis. That is, the rotating plate 25 and the swinging plate 31 are synchronously rotated by the same amount in the same direction via the first connecting rod 35. Swing plate 31 and arm 27
A tension spring (spring) 36 is provided across the other end of the spring.
36 urges the swinging plate 31 to rotate in the clockwise direction in FIG. 1 so as to press it against the stopper 32.

As shown in FIGS. 1, 3, and 4, a swing shaft 34 is rotatably supported on the other end of the arm 27 around a horizontal axis.
A magazine 37 on which the work 3 is placed is fixed to a swing shaft 34 inside the arm 27 (right side in FIG. 1).
The lever 39 is attached to the swing shaft 34 outside (left side in FIG. 1).
Has been fixed. The magazine includes a swing shaft 34, a magazine 37, and a lever 39. The magazine 37 has a disk-shaped main body 40 provided with a curved bottom plate 41, and the magazine 37 discharges the work 3 by placing the work 3 on the bottom plate 41 and rotating.

At a position shifted from the center of rotation of the swing arm 33, one end of a second connecting rod 43 is supported rotatably around a vertical axis,
The other end of the second connecting rod 43 is supported at a position deviated from the rotation center of 39 so as to be rotatable around a horizontal axis. That is, the swing arm 33 and the lever 39 (magazine 37) rotate by the same amount in synchronization via the second connecting rod 43, and the swing arm 33 is urged by the spring 36 via the swing plate 31. As a result, the magazine 37 is not rotated through the lever 39.

As shown in FIG. 2 and FIG. 5, a stopper bolt 44 is provided near the drive shaft 23 of the rotary actuator 21, and a stopper 47 is provided on the arm 27. When the stopper 47 hits the stopper bolt 44, the arm 27
The rotation amount is regulated to 90 degrees. That is, the stopper 47
The drive shaft does not contact the stopper bolt 44
In the degree, the arm 27 rotates together with the rotation plate 25 via the spring 36, the swinging plate 31, and the first connecting rod 35, and the stopper 47 is out of a predetermined rotation range of the drive shaft 23 in contact with the stopper bolt 44. Then
The pivoting plate 25 pivots with respect to the arm 27, and pivots the swinging plate 31 counterclockwise in FIG. 1 against the urging force of the spring 36 via the first connecting rod 35. Swing arm 33, second connecting rod 43
And, the magazine 37 is rotated via the lever 39.

 Next, the operation of the work unloading device 50 having the above configuration will be described.

By the urging force of the spring 36, the swing plate 31 is urged to rotate in the clockwise direction in FIG. In this state, the rotating plate 25 and the swinging plate via the first connecting rod 35
31 becomes non-rotational state, and furthermore, the swing arm 33 and the lever 39 become non-rotational state via the second connecting rod 43, and the rotation phase of the magazine 37 becomes a work loading state so that the rotation plate 25 and arm 27 are integrated.

When the rotary plate 25 is rotated in the clockwise direction in FIG. 1 by the drive of the rotary actuator 21 via the drive shaft 23, the arm 27 is rotated clockwise by the urging force of the spring 36 while maintaining the above-described state. By rotating, the magazine 37 is positioned at a predetermined position (in the vicinity of the main shaft 12) for loading the work (see the solid line in FIG. 1 and FIG. 3). The processed workpiece 3 is placed on the bottom plate 41 of the magazine 37 by an external device (not shown).

When the rotary plate 25 is rotated counterclockwise in FIG. 1 via the drive shaft 23 by driving the rotary actuator 21 in the opposite direction, the arm 27 is moved until the stopper 47 contacts the stopper bolt 44 (90 degrees). Rotates counterclockwise, and the magazine 37 is positioned at a predetermined position for discharging the workpiece (immediately above the chute 7) (see the dotted line in FIG. 1).

When the rotary actuator 21 is further driven, the rotation plate 25 continues to rotate counterclockwise in FIG. The swinging plate 31 rotates counterclockwise through the first connecting rod 35 against the urging force of the spring 36, and the swing arm 33
The lever 39 rotates counterclockwise in FIG. 6 via the second connecting rod 43. Magazine 37 is rotated by the rotation of lever 39.
Rotates, and the work 3 placed on the bottom plate 41 is rolled down on the chute 7 (the state shown in FIG. 6).

When the rotary actuator 21 is driven in the opposite direction again, the magazine 37 returns to the state where the work 3 is placed by the operation opposite to the above, and the swing plate 31 and the swing arm 33 are moved by the spring.
The rotating plate 25 and arm are urged by the urging force of 36.
27 can be rotated integrally.

By repeating the above operation, the workpieces 3 machined by the chamfering machine 1 can be carried out one after another to the chute 7, and the workpieces 3 are conveyed to the next machining machine (for example, a shaving machine), and the gears 3 Automatic processing becomes possible.

In the above-described work unloading device 50, the arm 27 is rotated by the driving of the rotary actuator 21, and the magazine 37
Can be reciprocated between the vicinity of the main shaft 12 and immediately above the chute 7. Also, the same rotary actuator
By driving the 21, the magazine 37 immediately above the chute 7 is rotated, and the processed work 3 can be discharged onto the chute 7. Therefore, there is no need to provide a drive source for holding and releasing the work 3 in the magazine 37.

<Effect of the Invention> In the work unloading device of the present invention, the arm member is rotated by driving the rotary actuator, and the magazine can be reciprocated between the work loading position and the work discharging position. The magazine at the work discharge position is rotated by driving,
The work placed on the magazine can be discharged.
As a result, a driving source and a wiring pipe for holding and releasing the work in the movable portion are not required, and the weight of the movable portion can be reduced, thereby improving maintainability and appearance. Further, since the work can be transferred and discharged by one driving source, the control system can be simplified and the operation time can be shortened.

[Brief description of the drawings]

FIG. 1 is a plan view of a work unloading device according to one embodiment of the present invention, FIG. 2 is a view taken along line II-II of FIG. 1, FIG. 3 is a view taken along line III of FIG. The figure is a view taken along the line IV-IV in FIG.
FIG. 2 is a view taken along line VV in FIG. 2, FIG. 6 is a view taken along arrow VI in FIG. 1 when the arm member is turned to the chute side, and FIG. 7 is a plan view of a conventional work unloading device. FIG. 8 is a perspective view thereof. In the drawing, 3 is a work, 7 is a carry-out chute (chute), 21 is a rotary actuator, 23 is a drive shaft, 25 is a rotating plate, 27 is an arm, 29 is an intermediate shaft, 31 is a swing plate, and 33 is a swing. An arm, 34 is a swing shaft, 35 is a first connecting rod, 36 is a tension spring (spring), 37 is a magazine, 39 is a lever, 43 is a second connecting rod, 47 is a stopper, and 50 is a work unloading device.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23Q 7/00 B23Q 7/10 B23Q 7/08

Claims (1)

(57) [Claims] A rotary actuator having a drive shaft around a vertical axis; a rotating plate fixed to the drive shaft; an arm member rotatably supported at one end on the drive shaft and extending in a horizontal direction; A magazine on which a workpiece is mounted while being rotatably supported at a tip thereof around a horizontal axis, a rotary shaft member rotatably supported around a vertical axis at an intermediate portion of an arm member, and a non-rotating A first connecting rod having one end rotatably supported around the vertical axis at the movement center position and the other end rotatably supported around the vertical axis at the non-rotation center position of the rotation shaft member; One end is rotatably supported around the vertical axis at a non-rotation center position of the driving shaft member and different from the support position of the first connecting rod, and the other end is rotated around the horizontal axis at the non-rotation center position of the magazine. And a second connecting rod rotatably supported by the arm member and the rotating shaft member. A rotating plate and a rotating shaft member connected by the first connecting rod, a rotating shaft member connected by the second connecting rod, and a spring for urging the magazine to a non-rotating state; The arm member is rotated integrally with the rotation plate via the rotation shaft member, the first connecting rod, and the spring in the movement range, and the rotation of the arm member is restricted and controlled outside the predetermined rotation range of the drive shaft. Rotating the moving plate with respect to the arm member, rotating the rotating shaft member via the first connecting rod against the urging force of the spring, and rotating the magazine via the second connecting rod. And a stopper member for discharging the work in the magazine.