JPS6011648B2 - Conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor used when a plurality of workpiece pedestals (or sets) are arranged side by side and the workpieces are sequentially conveyed to the workpiece pedestals, and in particular, a conveyor is used when a plurality of workpiece pedestals (or sets) are arranged side by side and the workpieces are successively conveyed to the workpiece pedestals. The present invention relates to a conveyor suitable for conveying long pieces of paper during processing.

First, this type of subordinate conveyor will be explained with reference to FIGS. 1 and 2.

Reference numerals la and lb designate workpiece pedestals, and one set of the workpiece pedestals is provided corresponding to each device that processes the workpiece 2. Reference numeral 6 denotes a vertically movable frame whose lower surface is connected to the piston rod 7a of a cylinder 7 vertically disposed on the floor and supported so as to be movable up and down, and this frame is long along the arrangement direction of the workpiece pedestals la and lb. .

Reference numeral 4 denotes a movable frame with a wheel 12 attached to its lower surface, which is connected at its lower surface to a piston rod 5a of a cylinder 5 whose base end is connected to the vertical movable frame 6.
(indicated by a dotted line) and contraction (indicated by a solid line).

Reference numerals 3a and 3b indicate inverted L-shaped moving workpiece holders that are set upright on the moving frame 4. Two workpieces are used as a set, and the distance between the holders 3a and 3b that form the paper is the same as the one set. work pedestal la,
Each group is arranged at equal intervals (intervals taking into consideration the distance P between the centers of the workpiece pedestals la and lb), with a range wider than the lb range.

This conveyor sequentially sends the workpiece 2 from the workpiece carry-in side (left side in Figure 1) to the workpiece carryout side (right side in Figure 1), places the workpieces on workpiece pedestals la and lb, and places the workpieces on a machine (not shown). It is supported with a hand and mounted on a lathe, etc., and processed there. When the processing is completed, it is returned to the original workpiece holders la and lb, and placed again on the moving workpiece holders 3a and 3b to be placed on the next workpiece holder. Perform an action similar to transporting the object to the stand.

That is, when carrying a workpiece, by driving the cylinder 7 and moving the moving workpiece holders 3a and 3b upward, the horizontal portions thereof are exposed above the horizontal portions of the workpiece holders la and lb. The workpiece 2 placed on the tables la and lb is placed on the moving workpiece pedestals 3a and 3b, and in this state, the cylinder 5 is driven to move the moving frame 4 by a distance P to the right in FIG. Then, by contracting the piston rod 7a of the sill 7, the workpiece pedestal 3a,
3b is lowered and the workpiece 2 is placed on the workpiece pedestals la and lb. The moving workpiece holders 3a and 3b are then moved to the piston rod 5a of the cylinder 5 in preparation for the next conveyance operation.
By contracting, the workpieces pass through the horizontal parts of the workpiece pedestals la and lb and return to their original positions. In such a conventional conveyor, each set of moving workpiece pedestals is equally spaced, so the spacing between the coarse center lines of the workpiece pedestals must all be equal, as shown by P. It won't happen.

However, in practice, due to reasons such as the scale of the processing equipment, it may be desirable to set the intervals between each set of workpiece pedestals at unequal intervals. However, in the conventional device, if the workpiece receivers are arranged at uneven intervals, the moving workpiece receivers 3a, 3b or the workpiece receiver l
It becomes impossible to support the workpiece at the center of a and lb, and in some cases, when moving the moving frame 4 downward, the workpiece holders la and lb collide with the moving workpiece holders 3a and 3b. , so this request cannot be met. An object of the present invention is to realize the above-mentioned requirement, that is, to realize a conveyor having a configuration that makes it possible to arbitrarily set the interval between fixed workpiece pedestals. At least one of the movable workpiece pedestals is provided with a space correction movable table movable in the workpiece pedestal arrangement direction with respect to the frame on which the movable workpiece pedestals are mounted.

Next, one embodiment of the present invention will be described with reference to FIGS. 3 and 4.

FIG. 3 shows a state in which the piston rod 5a of the cylinder 5 for reciprocating the movable frame 4 is not extended, and FIG. 4 shows a state in which it is extended. In this embodiment, a pair of workpiece pedestals lc and ld are installed at the left end in the drawing at a distance P2 that is different from the distance P between the other pairs of workpiece pedestals la and lb.

In addition, the moving workpiece holders 3c and 3d at the left end in FIG.
It is not fixed to the movable frame 4, but is erected on a space adjustment movable table 10 connected to a piston rod 9a of a cylinder 9 mounted on the movable frame 4. 8 is this moving table 10
This is a vehicle that can be moved left and right as shown in the drawing.

Here, the maximum stroke of the cylinder 9 should be P21P or more when P2>P. In this embodiment, the operation of the cylinder 7 when moving the workpiece is the same as in the case of FIG. 1, and the operation of the cylinder 5 is also performed in the same manner.

When starting to transport the workpiece from the state shown in FIG. The center of the workpiece pedestal lc
, ld), the piston rod 5
Synchronizing with the extension of a, or before and after the extension of the piston rod 5a, the piston rod 9a is contracted by a stroke of P2-P, and the midpoint between the moving workpiece holders 3c and 3d is connected to the moving workpiece holder 3a. , 3b so that the distance from the midpoint between them is P. FIG. 4 shows a state in which the piston rod 5a of the cylinder 5 is extended and the piston rod 9a of the cylinder 9 is contracted. When the piston rod 7a of the cylinder 7 is contracted from this state, the movable workpiece pedestals 3a to 3d are lowered, so that the workpieces are placed on the workpiece pedestals la and lb. When returning the moving workpiece pedestals 3a to 3d to their original positions, as described above, the workpiece pedestals la
~ Return these so that they pass under ld.

If the workpiece has been removed from the workpiece pedestals la to ld, the moving workpiece pedestals 3a, 3b or 3c, 3
Place the horizontal part of d on the workpiece pedestal la, lb or lc, ld
It is also possible to pass it back over the horizontal part of the It should be noted that, unlike the above-mentioned embodiment, it is clear that the same effect can be obtained even if the movable frame 4 and the vertically movable frame 6 are turned upside down as shown in FIG.

Furthermore, the moving table 10 for adjusting the distance may be attached to a structure other than the moving workpiece holders 3c and 3d shown in FIGS. 3 to 5, but if this is done, the number of moving tables may be increased. ,
Alternatively, it is necessary to use a movable table having a length on which four sets of movable workpiece pedestals 3a and 3b can be placed. In the above embodiment, a set of two workpiece pedestals is shown, but the present invention is not limited to this structure. As mentioned above, in the present invention, a part of the movable workpiece pedestal is mounted on the movable table so that the interval between the movable workpiece pedestals can be adjusted.
The interval between fixedly installed workpiece pedestals can be changed.

Therefore, if it is difficult to set the workpiece pedestals at equal intervals due to constraints such as the installation space of a lathe, etc. that processes the workpiece, it is possible to set the workpiece pedestals at arbitrary intervals, making it more flexible. It is possible to install equipment with the following characteristics.

[Brief explanation of drawings]

Fig. 1 is a front view of a conventional conveyor, Fig. 2 is a side view thereof, Figs. 3 and 4 are front views showing an embodiment of the conveyor according to the present invention, Fig. 3 is before operation, and Fig. 4 is a front view of a conventional conveyor. indicates after operation. FIG. 5 is a front view showing another embodiment of the Kosobair according to the present invention in a state before operation. la~ld...work pedestal,
2...Workpiece, 3a-3d...Movement workpiece holder, 4...Movement frame, 5...Movement cylinder, 6...Vertical movement frame, 7... Silling for vertical movement, 8, 12... Car, 9... Cylinder for spacing adjustment, 10... Moving platform for spacing adjustment. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 Three or more fixed workpiece pedestals are installed, at least one of the intervals between these workpiece pedestals is unequal, and the workpieces are sequentially transferred between these workpiece pedestals. In a conveyor, either a vertically movable frame that can move up and down or a movable frame that can reciprocate in the workpiece pedestal arrangement direction is mounted on the other, and the movement stroke of the moving frame is the same as that between adjacent workpiece pedestals. A workpiece pedestal is placed at a location where the interval between the workpiece pedestals on the frame mounted on the upper surface of the other of the vertically movable frame and the moving frame does not match the moving frame stroke. A conveyor comprising a space correction moving table capable of reciprocating in the arrangement direction, and a moving workpiece holder provided on the space correction moving table and a frame on which the moving table is mounted.