JPH0542976Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a workpiece posture correction device, and in particular, when a forklift is used to transport a workpiece from a pick-up position to a supply position, the workpiece posture is changed between the above positions. The present invention relates to a device for correcting.

[Conventional technology]

For example, in press processing in automobile manufacturing and the like, a long metal plate material wound into a roll is rolled out and cut into a predetermined size, and the cut approximately rectangular plate material is pressed. Between the cutting process and the pressing process of the plate material, a stack of a plurality of cut substantially rectangular plate materials (hereinafter referred to as a stack) is usually transported using a forklift. For example, as shown in FIG. 14, when a stack 1 in which a plurality of plate materials are stacked is discharged from the cutting process line _L1 and placed on the workpiece discharge table 2 in the shape of a basket at the take-out position _P1 , the fork The lift 3 is operated to insert the fork 4 into the work discharge table 2, and the stack 1 is transferred onto the fork 4. Then, the forklift 3 is moved, and the stack 1 on the fork 4 of the forklift ₃ is transferred onto the cage-like work supply stand 5 located at the supply position _P2 of the press working line L2.

[The problem that the idea attempts to solve]

By the way, the above stack 1 is manufactured on a press processing line.
When supplying to L ₂ , from fork 4 of forklift 3 to workpiece supply platform 5 of supply position P ₂
There is no problem if the above-mentioned stack 1 is taken out and transferred with the attitude at position P ₁ , but due to processing in press processing line L ₂ , the attitude of stack 1 at supply position P ₂ must be changed. , the stack ₁ is rotated by a predetermined angle θ in the horizontal plane with respect to the extending direction A of the fork 4, as shown in FIG. It may be necessary to place it on the supply table 5. In such a case, there is a means for providing the work supply table 5 with a positioning pin (not shown) that can be protruded and retracted so that the stack 1 can take a desired posture. In this method, the forklift 3 on which the stack 1 is placed
After inserting the fork 4 into the work supply table 5, a positioning pin is projected onto the work supply table 5. Then, by moving the forklift 3 backward, the stack 1 on the fork 4 is rotated by a set angle θ while making contact with the positioning pin, corrected to a desired posture, and placed on the work supply table 5. . However, with the above-mentioned posture correction using the positioning pin, there is a possibility that the stack 1 on the fork 4 may not rotate to the set angle while contacting the positioning pin when the forklift 3 retreats, so it is not reliable and it is difficult to obtain accurate posture correction. There was a problem.

Therefore, the present invention was proposed in view of the above problems, and its purpose is to provide a device that can correct the posture of the workpiece by a simple means between the workpiece take-out position and the workpiece supply position. It is in.

[Means to solve the problem]

The technical means for achieving the above object of the present invention is to move the workpiece placed on the fork of a forklift in a horizontal plane by moving a screen-like table onto which the workpiece placed on the fork of the forklift is transferred in a desired attitude with respect to the extending direction of the fork. This is a workpiece posture correction device in which a support frame, on which a clamper disposed opposite to the table is rotatably mounted so as to be movable in the vertical direction, is rotatably supported on a frame stand in a vertical plane.

[Effect]

According to the present invention, a workpiece on a fork of a forklift is transferred onto a table, and by rotating this table in a horizontal plane, the workpiece is rotated by a set angle with respect to the extending direction of the fork to achieve a desired posture. Set to . After clamping and fixing the workpiece between the table and the clamper, the support frame is rotated 180° in a vertical plane relative to the frame base, thereby turning the table and clamper upside down and inverting the workpiece. In this state, the clamper is released and the table is reversely rotated to return to the initial state, after which the workpiece is again clamped and fixed between the table and the clamper, and then reversed and returned to release the clamper. As a result, the workpiece transferred onto the fork of the forklift can assume a desired posture rotated by a set angle within a horizontal plane with respect to the direction in which the fork extends.

〔Example〕

An embodiment of the work posture correcting device according to the present invention will be described with reference to FIGS. 1 to 13.

The workpiece posture correction device 10 of the present invention includes, for example,
As shown in FIG. 3, the stack 1 as a work is discharged from the cutting process line L ₁ and is placed on the work discharge table 2 at the take-out position P ₁ , and the stack 1 is supplied to the press processing line L _2. The workpiece is placed between the workpiece supply table 5 at the supply position _P2 to which the workpiece is transferred and loaded.

The workpiece posture correcting device 10 is a fork 4 of a forklift 3, as shown in FIGS. 1 and 2.
The stack 1 placed on the fork 4 has a clamper arranged so as to be able to rotate the cage-like table 11 in a horizontal plane and facing the table 11, which is transferred in a desired posture with respect to the extending direction A of the fork 4. It has a structure in which a support frame 13 on which a support frame 12 is mounted so as to be movable in the vertical direction is rotatably supported on a frame stand 14 in a vertical plane.

The table 11 is a substantially rectangular flat plate that is slightly larger than the bottom area of the stack 1, and has stack mounting portions 11a, 11a arranged in a cage-like manner on its upper surface with pitches into which the forks 4 of the forklift 3 can be inserted.
. . . and is rotated in a horizontal plane by a table drive mechanism 15 provided at the bottom of the support frame 13. The table drive mechanism 15 includes a drive motor 16 and a reduction gearbox 17, and is connected to the table 11 via a rotating shaft 18.

On the other hand, the clamper 12 is a generally rectangular flat plate having approximately the same area as the table 11, and is moved up and down by a clamper drive mechanism 19 provided on the side wall of the support frame 13. The clamper drive mechanism 19 includes a drive cylinder 20, and the rod tip of the cylinder 20 is connected to the clamper 12 via a bracket 21. Although not shown, the support frame 13 is also provided with a mechanism for guiding the vertical movement of the clamper 12.

Further, the support frame 13 is rotatably supported on a frame stand 14 by a rotating shaft 22.
A drive motor 23, which is a support frame drive mechanism connected to the shaft end of the frame 2, is fixed to the frame stand 14.

Next, the operation of the workpiece posture correction device 10 will be explained below. First, as shown in FIG. 3, the stack 1 placed on the workpiece discharge table ₂ at the take-out position _P1 of the cutting process line L1 is transferred onto the fork 4 by operating the forklift 3.
Then, the forklift 3 is moved and the stack 1 on the fork 4 is transferred to the workpiece posture correction device 10. At this time, as shown in FIG. 1 and FIG.
a, 11a... are aligned in the extending direction A of the fork 4, so insert the fork 4 between the stack placement parts 11a, 11a..., lower the fork 4 slightly, and place the stack 1 on the stack placement part. 11
a, 11a... After placing it on the fork 4
Pull it out. From this state, as shown in FIGS. 4 and 5, the table 11 is rotated in a horizontal plane by the motor 16 of the table drive mechanism 15, thereby rotating the stack 1 by a set angle θ with respect to the extending direction A of the fork 4. to correct the desired posture. In this state, the protruding direction A of the fork 4 and the stack mounting portion 11 of the table 11 are
a, 11a... are not aligned, so first, extend the cylinder 20 of the clamper drive mechanism 19 to lower the clamper 12, clamp and fix the stack 1 between the table 11 and the clamper 12, and then
Support frame 13 as shown in FIGS. 6 and 7
is rotated 180° in the vertical plane by the motor 23 of the support frame drive mechanism, and the table 11 and clamper 1 are
Turn stack 2 upside down and flip stack 1. In this state, as shown in FIGS. 8 and 9, the clamper drive mechanism 19 is operated in reverse to release the clamper 12 and lowered together with the stack 1, and the table drive mechanism 15 is operated in reverse to rotate the table 11 in the reverse direction. let As a result, the table 11 is returned to its initial state, and the stack placement portions 11a, 11a, . . .
... are aligned with the protruding direction A of the fork 4. Thereafter, as shown in FIGS. 10 and 11, the clamper 12 is raised together with the stack 1 by the clamper drive mechanism 19, and the table 11 and clamper 12 are moved up.
Stack 1 is clamped and fixed again, and as shown in FIGS. 12 and 13, the motor 23 of the support frame drive mechanism is operated in reverse to reverse the support frame 13, and the clamper 12 is released to return to the initial state. let Then, operate the forklift 3 to move the fork 4 to the stack mounting portion 11a of the table 11,
11a... Insert the stack 1 between them and raise it slightly, and transfer the stack 1 onto the fork 4. At this time, the stack 1 is in a corrected position rotated by a set angle θ with respect to the extending direction A of the fork 4. Thereafter, as shown in FIG. 3, the forklift 3 is moved to press work line L _2.
On the workpiece supply table 5 at supply position _P2 ,
Transfer stack 1 on fork 4.

Incidentally, in the above embodiment, a stack formed by laminating a plurality of plate materials was described as an example of the workpiece, but the present invention is not limited to this, and the workpiece may be a block-shaped workpiece or the like. Also,
Of course, the drive mechanisms for the table, clamper, and support frame may have structures other than those in the above embodiments.

[Effect of idea]

According to the workpiece posture correction device of the present invention, it is possible to rotate the workpiece placed on the fork of a forklift by a set angle in a horizontal plane with respect to the extending direction of the fork by a simple means, and it is possible to do so in a reliable manner. Accurate posture correction can be obtained, and a workpiece posture correction device with great practical value can be provided.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the workpiece posture correcting device according to the present invention, Fig. 2 is a plan view with the clamper omitted in Fig. 1, and Fig. 3 is a plan view showing an example of use of the workpiece posture correcting device. Figures 4 to 13 are for explaining the operating state of the workpiece posture correction device.
Figure 2 is a front view of the workpiece posture correction device in Figure 1 in each operating state, Figure 5, Figure 7, Figure 9, and Figure 11.
13 are plan views with the clamper omitted in each operating state. FIG. 14 is a plan view for explaining work transfer by a forklift. 1... Work (stack), 3... Fork lift, 4... Fork, 10... Work posture correction device, 11... Table, 12... Clamper, 1
3...Support frame, 14...Frame stand.

Claims (1)

[Scope of utility model claims] The workpiece placed on the fork of a forklift is transferred in a desired posture with respect to the extending direction of the fork. A cage-shaped table is rotatable in a horizontal plane, and a clamper is arranged opposite to the table. A workpiece posture correction device characterized in that a support frame mounted so as to be movable in the vertical direction is rotatably supported on a frame stand in a vertical plane.