JP2894027B2 - Plate work transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device used for feeding a plate-like work such as a steel plate to a processing machine.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, for example, when a plate-shaped work (hereinafter simply referred to as a work) W such as a steel plate to be processed is fed into a processing machine, a pair of roller-driven rollers Rollers 55 and 56 of conveyors 51 and 52
The work W may be loaded by sandwiching the work W between them, or as shown in FIG. 7, the work W may be loaded by sandwiching the work W between a pair of belt conveyors 53 and 54.

[0003]

In such a conventional transfer apparatus, when the work W is fed between the upper and lower rollers 55 and 56 or between the conveyor belts 57 and 58,
Initially, the edge portion of the end face on the feed side of the work W comes into contact with the cylindrical surfaces of the rollers 55 and 56 or the conveyor belts 57 and 58 and is engaged therewith. Therefore, when the work W is rectangular, that is, on the feed side of the work W Is relatively parallel to the center of rotation of the rollers 55 and 56 or the belt pulley 59, the workpiece W can be relatively smoothly fed.

However, if the workpiece W is not rectangular and the end face on the feeding side of the workpiece W is inclined as shown by S in FIG. Only a small part of the end face on the feed side of the W contacts the rollers 55 and 56 or the conveyor belts 57 and 58 by point or line contact, and the end face on the feed side of the work W with the progress of the feed of the work W. The length of contact (contact area) between the rollers 55 and 56 or the conveyor belts 57 and 58 gradually increases.

Therefore, the work W and the rollers 55 and 56 or the conveyor belt 5 at the time of the work being engaged.
7 and 58, the feeding posture of the work W is changed due to the imbalance of the frictional force caused by the sliding, and the posture of the work W becomes unstable. As a result, the workpiece W having a posture other than the normal posture is fed into the processing machine, and a trouble such as a processing defect is caused.

The present invention has been made in view of the above problems, and when the work is initially bitten into the conveyor,
An object of the present invention is to enable a workpiece to be bitten in the form of surface contact by a flat surface, thereby preventing a change in the feeding posture of the workpiece.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a pair of belt conveyors having an endless conveyor belt are arranged close to each other such that their belt conveying surfaces face each other, and the conveyor belt is rotated by a rotating orbiting motion. A conveyor device for a plate-like work in which a plate-like work is sandwiched and conveyed between the belt conveying surfaces, wherein the conveyor belt is constituted by connecting a number of slat bars in an endless track. In each slat bar, a plurality of floating plates having a slanted conveying plane inclined downward in the direction of rotation of the conveyor belt are disposed along the longitudinal direction of the slat bar via an elastic body. Features.

[0008]

According to this structure, since each floating plate is elastically supported by an elastic body, and the inclined conveying plane of the floating plate has a predetermined inclination, the work is sandwiched between both conveyor belts. At the moment of insertion, the inclined conveying planes of the floating plates facing each other across the work become parallel to each other,
The work is sandwiched between them in the form of planar contact.

Therefore, the workpiece itself is not rectangular, and for example, the tip of the workpiece feeding side is inclined.
The posture of the work does not become unstable even if the entire tip of the work is not bitten at the moment of biting.

[0010]

FIG. 2 is a view showing an embodiment of the present invention. As shown in FIG. 2, a pair of belt conveyors 1 and 2 having endless conveyor belts 3 and 4 are connected to each other so that their belt contacting surfaces are mutually connected. opposed vertically disposed symmetrically so as to approach the belt conveying surface 3a opposing the other, the conveying starting end P ₁ conveyed from the side end portion P ₂ at pinch the work W between the 4a between
The conveyor belts 3, 4 a are located on the back side of the belt conveying surfaces 3 a, 4 a facing each other.
4, a plurality of backup rollers 5 for pressing down
6 is provided.

As shown in FIGS. 3 and 4, each of the conveyor belts 3 and 4 is formed by connecting slat bars 7 having a predetermined width to each other by a link 8 so as to form an endless endless track (so-called caterpillar). It is wound around the sprockets 9 and 10 on both the drive side and the driven side to make a revolving motion (however, FIGS. 3 and 4 show enlarged views of a portion a of one conveyor belt 3 in FIG. 2. The structure of the other conveyor belt 4 is exactly the same as that shown in FIGS.

On the upper surface of the slat bar 7, a rubber-based elastic body 11 such as rubber or urethane is adhered along its longitudinal direction, and the rubber-based elastic body 11 is attached to the conveyor belt 3, 4 has a downward inclination angle θ with respect to the rotation direction.

A plurality of floating plates 12 are fixed on the upper surface of the rubber-based elastic body 11 along the longitudinal direction thereof. When one slat bar 7 is viewed,
Since the rubber-based elastic body 11 inclined at a predetermined angle is interposed between the slat bar 7 and the plurality of floating plates 12 on the slat bar 7, an inclined conveyance plane 12a is formed on each floating plate 12. Thus, the rubber-based elastic body 11 can be independently displaced within the range of the bending allowance.

[0014] Work in such conveyance apparatus constructed as above, as shown in the enlarged view of part b of the conveyance start end P ₁ side in FIG. 2 in FIG. 1, both of the conveyor belts 3 and 4 in synchronization with one another As shown in FIG. 1 (A), because of the rotational orbiting movement in the transport direction, the floating plates 12 and 12 of the slat bar 7 facing each other with the rotational orbital movement of the conveyor belts 3 and 4. Becomes gradually smaller in the work transfer direction. That is, the floating plates 12A, 12A,
Before the dimension between the floating plates 12A is reduced as shown in FIG.
The size between the two floating plates 12B, 12B changes from the state shown in FIG. 1A to the one shown in FIG.
There is a moment when 2a is parallel to each other.

Therefore, the conveyor belt 3,
4, both conveyor belts 3, 4
The work W is fed between the belt transport surfaces 3a and 4a of the
Immediately before the two inclined conveying planes 12a become parallel to each other, their floating plates 12
Between the floating plates 12,
Numeral 12 sandwiches the work W from above and below while keeping the rubber-based elastic body 11 parallel to each other.

Thereafter, as shown in FIG. 1C, the subsequent floating plates 12, 12 successively sandwich the work W from above and below in the same manner as described above, and the work W is placed on both sides as shown in FIG. While receiving the pressing force of the backup rollers 5 and 6 in addition to the pressing force of the conveyor belts 3 and 4, the belt is conveyed to the conveying end portion P2 side of the belt conveyors 1 and _{2 and} eventually to a processing machine (not shown).

As described above, according to the present embodiment, at the moment when the work W is bitten between the two conveyor belts 3 and 4, the floating plate 12 is not used to bite the workpiece W by a line or a point contact with a curved surface as in the related art. When the inclined conveying planes 12a, 12a are parallel to each other, the work W is sandwiched from above and below. Therefore, even if the work W is not rectangular, for example, the tip end side of the work W is cut obliquely. Even in such a case, since the leading ends of the inclined portions are clamped by the inclined conveying planes 12a, 12a which are parallel to each other, the posture of the work W may fluctuate and become unstable when the work is engaged. No belt conveyor 1,2
The workpiece W can be transported remain stable posture to the transfer terminal end portion P ₂ side.

[0018]

As described above in detail, according to the present invention, a floating plate provided on a pair of conveyor belts rotating and revolving and having an inclined conveying plane inclined at a predetermined angle allows a work to be carried by both conveyor belts. When the work is sandwiched, the inclined conveying planes are parallel to each other. Therefore, even if the work is not rectangular, the work can be securely clamped from above and below to prevent a change in the posture of the work. Can be transported stably, and the reliability as transport equipment is improved.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of the present invention, and is an operation explanatory view corresponding to a part b in FIG. 2;

FIG. 2 is an overall schematic configuration diagram showing one embodiment of the present invention.

FIG. 3 is an enlarged perspective view of a part a in FIG. 2;

FIG. 4 is an enlarged front view of a main part of FIG. 3;

FIG. 5 is a configuration explanatory view showing an example of a conventional roller conveyor type transfer device.

FIG. 6 is a plan view of FIG. 5;

FIG. 7 is a configuration explanatory view showing an example of a conventional conveyor device of a belt conveyor system.

[Explanation of symbols]

 1, 2, belt conveyor 3, 4, conveyor belt 7, slat bar 11, rubber elastic body 12, 12A, 12B, floating plate 12a, inclined transport plane W, plate-like work

Claims (1)

(57) [Claims] 1. A pair of belt conveyors having an endless conveyor belt are arranged close to each other such that their belt conveyance surfaces face each other, and are rotated between the belt conveyance surfaces by the rotation of the conveyor belt. A conveyor device for a plate-shaped work which sandwiches and conveys a plate-shaped work, wherein the conveyor belt is constituted by connecting a number of slat bars in an endless track. A plurality of floating plates having a slanted conveying plane inclined downward in the direction of rotation of the conveyor belt are disposed along the longitudinal direction of the slat bar via an elastic body. apparatus.