JPS6143258B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for lifting the upper layer of a stack of papers, for example, about 1000 sheets, and transporting the stacked papers to another location.

Conventionally, when carrying printed sheets of paper to a cutting machine at a printing factory, etc., each person could only carry a few dozen sheets at a time, and the paper would have to go back and forth more than a dozen times for one cutting process. It was an unusual situation.

An object of the present invention is to provide a device that can transport paper in a stacked form, instead of the conventional paper transport work which has traditionally been carried out manually in ten or more batches.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the entire embodiment, and FIG. 2 is a side view of the embodiment shown in FIG. 1 (as viewed from the arrow in FIG. 1).

The bed 1 is elongated in the left and right directions on the floor surface, and a carriage 8 is provided on the bed 1 to reciprocate in the left and right directions by a motor 3 and a feed screw 4. Multiple columns 5, 5
A feed screw 6 at the center is established, and a lifting platform 9 is supported by these columns and the feed screw, and is displaced in the vertical direction by a motor 10 on the top plate 7. The devices on these carriages constitute the tower 2.

A cantilever bridge 11 extends in front of this elevator platform 9, and a central elevator chamber 12 is provided below the base of the cantilever bridge 11. Wires 13 are connected to the left and right sides of the upper part of the central elevator chamber 12. 13 is led behind the tower 2 via pulleys 14, 14 on the top plate, and a balance weight 15 is suspended from the tip.

The cantilever bridge 11 consists of a longitudinally moving shaft 16 and its holding portion 17, and the moving shaft 16 is displaced in the longitudinal direction by a motor 18. A longitudinally moving head 19 is provided at the tip of the longitudinally moving shaft 16, and the head 19
first guide rods 20, 20 in the left and right horizontal directions from
The feed screws 21, 21 extend parallel to each other. A left paper holding device 22A and a right paper holding device 22B are provided on the first guide rods 20, 20, respectively, and their positions can be adjusted by rotating feed screws 21, 21.

On the other hand, a second guide rod 2 extends from the central elevator chamber 12 in the left-right horizontal direction and parallel to the first guide rod.
3 and 23 extend, and a left paper receiving head 24A and a right paper receiving head 24B are provided at both ends, respectively. Paper receiving arms 26 are attached to rotating shafts 25A, 25B below both paper receiving heads 24A, 24B.
A and 26B are attached.

As shown in FIG. 5, the planar shape of the paper receiving arms 26A, 26B is similar to the ζ-shape of a Greek small letter as a whole, that is, in the return state, both the rotation shafts 25A, 25B and the tip 48 should be lifted up. The central curved part 49, which is close to the paper P and is farthest from the paper P, is curved in a round shape, and the shape seen from the front is a plate-like shape along a horizontal plane as shown in FIG. 3, and it faces the paper. The edge 50 is sharp like a knife edge. In FIG. 5, the dashed-dotted line shows the lifted state, and the dashed-double line shows the opened state when the paper is dropped after being conveyed.

A paper partitioning device 27 is provided at the lower end of the front surface of the central elevator chamber 12 to partition the upper layer from the stacked papers. As shown in FIG. 3, this paper partitioning device 27 includes a first partitioning member 28 provided at the center,
Second partition members 29A, 2 provided on both left and right sides thereof
9B, push-out combs 30, 30 that move together with the second partition member, and a sensor 3 that detects the top surface of the paper.
6. The first partition member 28 can be displaced in the front-rear direction and can also be displaced downward,
Second partition members 29A, 29B and extrusion comb 3
0 and 30 are displaced only in the front-back direction.

As shown in FIG. 4, the paper holding device 22 includes a vertically displacing rod 31 that protrudes downward, a paper receiving shelf 32 that rotates about the lower end of the rod as a fulcrum, and controls the rotation of the paper receiving shelf 32. In order to do this, it has a link 33 that is displaceable in the vertical direction, and a paper retainer 34 that is provided oppositely above the paper receiving shelf and expands and contracts by a built-in spring. You can hold the edges.
An air nozzle 35 for injecting air between the sheets of paper to be carried is disposed below the back and forth moving head 19 and communicates with an air pump (not shown).

Next, the action will be explained.

It is assumed that the papers P to be transferred are stacked in front of the left end of the bed 1 and are transferred to the right along the bed 1. The positions of the left and right paper holding devices 22A, 22B and the positions of the front and rear heads 19 are set in advance according to the size of the paper. The operations of each section described below proceed automatically according to a preset program of the sequence controller.

When the elevator platform 9 of the tower 2 descends and the sensor 36 detects the top surface of the stacked papers and the elevator platform 9 stops, the height of the paper partitioning device 27 is adjusted to match the upper layer to be transported and the remaining paper. Located at the border.

First, the first partition member 28 penetrates between the sheets of paper. Next, the second partition members 29A, 29B,
The extruded combs 30, 3 penetrate into the gap formed by the penetration of the first partition member and are integral with the second partition member.
0 pushes the upper layer of paper forward by several centimeters. This state is shown by the chain line in FIG. In parallel with the second partition member and extrusion comb extruding the upper layer of paper,
The first partition member 28 descends slightly to widen the gap. Next, the paper receiving arms 26A and 26B are rotated and inserted into the enlarged gap sequentially from the tip, and when the entire arm is inserted, it stops to support both left and right sides of the paper. In parallel with this rotation of the paper receiving arm, the left and right paper holding devices 22A and 22B hold the left and right ends of the protruding side of the extruded upper layer, and then the feed screw 21 is slightly rotated to hold the left and right ends of the protruding side of the upper layer. The interval between the parts is shortened to bend the central part of the paper, and at the same time, air is blown between the leaves in the upper layer from a blowing nozzle 35 to loosen the paper.

When the lifting platform 9 is raised while continuing this air blowing, the upper layer of the paper is moved to the second partition device 29A, 29.
B, it is lifted by the paper receiving arms 26A, 26B and the paper holding devices 22A, 22B. Next, the entire tower on the carriage 8 is moved to a predetermined position on the right. Therefore, the paper receiving arms 26A, 26B are further expanded outward, and at the same time, the paper holding devices 22A, 22B are expanded outwardly.
If the paper is loosened, the transported paper will fall onto a predetermined table. After the paper falls, the paper receiving arm 26A,
26B is returned to its return state, the carriage is returned to the left, and the next lifting operation is started.

According to the present invention, the upper layer of stacked paper can be lifted in one block and transported to a desired location, which saves manpower and improves work efficiency. In addition, a pair of left and right paper receiving arms are installed along the outside of one side of the paper and have an overall ζ shape, so there is a gap formed by the partitioning device in the center of one side of the paper. The tip of the arm is first inserted into the section, and then as the shaft rotates, it is inserted sequentially from the tip to the root section, and since the angle between the arm and the paper at the insertion point is almost the same as the predetermined angle of inclination, the insertion The process is done smoothly and does not damage the paper. Further, in the lifted state, the central curved portion of the arm supports the paper at a location considerably closer to the center than the edges, so there is no risk of the paper slipping off during conveyance. Furthermore, since the arm rotation axis can be adjusted along the outside of one side of the paper, it can be used to transport paper of any size.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the entire embodiment of the present invention, Fig. 2 is a side view of the embodiment shown in Fig. 1, Fig. 3 is a front view showing the vicinity of the partitioning device of the embodiment shown in Fig. 1, and Fig. 4 is a Third
FIG. 5 is a plan view showing the lifting arm of the embodiment shown in FIG. 1 and its surroundings. 1... Betsudo, 2... Tower, 9... Lifting platform, 11
...Cantilever bridge, 12...Central elevator room, 22
A, 22B...Paper holding device, 25A, 25B...
Rotating shaft, 26A, 26B...Paper receiving arm, 48
...Arm tip, 49...Central curved part.

Claims (1)

[Claims] 1. A device that inserts paper receiving arms into both ends of one side of stacked rectangular paper, and pinches both ends of the opposite sides of said one side with a pair of clamping devices to lift and transfer the upper layer of stacked paper as a whole. In the above, the arm is a rotating body having a ζ (Greek small letter) shape as a whole, and its rotation axis is displaced along the outside of the one side, and in the return state, the tips of both arms are closest to each other and the above-mentioned An upper layer of stacked paper, located at the center of the opposite side, characterized in that the central curved portions of both arms are within the outline of the paper in the lifted state, and are open by more than 90° from the above-mentioned returned state when the paper falls. A device that lifts and transports parts.