JPH05726A - Back-up device for conveyor - Google Patents

Abstract

(57) [Summary] [Object] To provide a conveyor backup device which has a simple and inexpensive structure and can assemble a platen loaded with works by rotating the platen on the conveyor at an arbitrary angle. A platen 2 loaded with works and conveyed on a conveyor 1 is driven up and down by an air cylinder 9 at a predetermined position on the conveyor 1, and the platen 2 is rotationally driven by a stepping motor 25 at an ascending end. did.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor backup device for positioning a carrying jig (hereinafter referred to as a platen) carried on a conveyor.

[0002]

2. Description of the Related Art For example, when a plurality of magnetic heads are attached to a cylinder of a video tape recorder, conventionally, the cylinder is positioned and placed on a platen which is conveyed on a conveyor, and a robot separates the cylinder at a predetermined position on the conveyor. The magnetic head was attached to the rotary positioning unit by rotating the cylinder or pallet at a predetermined angle.

[0003]

However, according to the above construction, in order to rotationally position a work such as a cylinder, the work or the platen on which the work is loaded is taken out from the conveyor and transferred to a separately provided rotary positioning unit. There is a problem in that the equipment must be replaced, the equipment becomes complicated, the equipment cost increases, and a large space is required. Further, the number of times the arm of the robot or the like comes into contact with the work may cause a defect in the work.

The present invention has been made in view of the above circumstances, and has a simple and inexpensive structure in which a platen loaded with works can be rotated at an arbitrary angle on the conveyor to perform assembly. It is an object of the present invention to provide a backup device for use.

[0005]

SUMMARY OF THE INVENTION A conveyor backup device of the present invention is a conveyor backup device for positioning a transfer jig for stacking workpieces and transferring the transfer jig on the conveyor. It is characterized in that a first driving means for driving up and down at the position and a second driving means for driving the conveying jig to rotate at a predetermined angle at the rising end are provided.

[0006]

In the conveyor backup device having the above construction, the platen, which is a conveying jig, is raised to a rotatable height by the first driving means and then rotationally positioned at an arbitrary angle by the second driving means. You can Therefore, the pallet can be assembled without removing it from the conveyor.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a conveyor backup device of the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the present invention.
A platen 2 is placed on the conveyor 1 which is a pair of left and right belts.
Is placed, and a work (not shown) is loaded on the platen 2. The conveyor 1 is traveling in the direction indicated by arrow A. A substrate 3 is fixed to the lower portion of the conveyor 1 in parallel with the conveyor 1, and a pair of stoppers 4 are attached to the center line of the conveyor 1 at predetermined positions on the substrate 3. A stopper pin 5 is provided on the stopper 4 so as to be able to move up and down. By projecting the stopper pin 5 upward between a pair of left and right conveyors 1, the platen 2 on the conveyor 1 is locked at a predetermined position. It has become.
Further, the stopper 4 is provided with a sensor 6 for detecting that the platen 2 has risen to a predetermined height by means described later.

A mounting plate 8 is fixed to the lower part of the substrate 3 in parallel with the substrate 3 via a plurality of columns 7, and an air cylinder 9 is mounted on the mounting plate 8. The output shaft 10 of the air cylinder 9 is perpendicular to the mounting plate 8, and the drive shaft 12 is connected to the upper end thereof via a universal joint 11. Further, the lower end of the output shaft 10 projects below the mounting plate 8, and a stopper 13 for adjusting the rising stroke of the output shaft 10 is attached. Further drive shaft 1
The upper and lower ends of 2 are concentric with the lifting plate 14 perpendicular to the axial direction.
Is fixed.

A spline 15 parallel to the axial direction is provided on the outer periphery of the drive shaft 12, and a cylindrical rotating body 16 having teeth meshing with the spline 15 on the inner periphery is mounted on the outer periphery of the spline 15. Has been done. The rotating body 16 is rotatably supported by a cylindrical supporting member 17 which is concentrically fixed to the substrate 3 via a pair of upper and lower bearings 18. Further, a first pulley 19 is concentrically fixed to the lower end of the rotating body 16, and an encoder plate 20 for detecting a rotation angle is concentrically fixed to the lower surface of the pulley 19. A photomicro switch 21 for detecting an angle signal of the encoder plate 20 is attached to the lower surface of the substrate 3 via a bracket 22.

On the other hand, the bracket 2 is attached to the column 7 on the left side in the figure.
A stepping motor 25, which is a second driving means, is attached via 3, 24.
The output shaft 26 of No. 5 is parallel to the drive shaft 12. A second pulley 27 is fixed to the upper end of the output shaft 26 at a height matching the first pulley 19 provided on the drive shaft 12. A timing belt 28 is stretched between the pulleys 19 and 27. And the brackets 23, 24
The tension of the timing belt 28 can be adjusted by adjusting the mounting position of the column 7 with respect to the column 7.

Next, the operation of this embodiment will be described. When the platen 2 placed on the conveyor 1 advances in the direction of arrow A and is locked by the stop pin 5, the air cylinder 9 operates and the lift plate 14 is lifted. At this time, drive shaft 1
Since 2 is spline-fitted with the rotating body 16, it can be raised and lowered with respect to the rotating body 16. When the elevating plate 14 rises, the positioning pins 14a implanted in the elevating plate 14 are fitted into the positioning holes provided on the lower surface of the platen 2 in advance,
The platen 2 is positioned with respect to the lift plate 14. Further, when the elevating plate 14 rises and separates from the stopper pin 5 and reaches a predetermined height, the sensor 6 detects this and stops the operation of the air cylinder 9.

Next, the stepping motor 25 starts to rotate, and the rotating body 16 is rotated via the second pulley 27, the timing belt 28, and the first pulley 19. As a result, the drive shaft 12 that is spline-fitted with the rotating body 16 rotates, and the platen 2 rotates integrally via the elevating plate 14.
When the stepping motor 25 rotates by the number of pulses preset in the control unit (not shown), the rotation is stopped. That is, the rotation angle of the platen 2 is determined by the set number of pulses, and the rotation angle can be set arbitrarily.

After the parts are assembled to the work on the platen 2 which is rotated and positioned on the conveyor 1 by a predetermined angle, the stepping motor 25 is reversely rotated by the number of pulses to the initial angle. return. Next, the elevating plate 14 is lowered by the air cylinder 9, and the platen 2 is placed on the conveyor 1. Then, the stopper pin 5 is lowered to release the engagement with the platen 2, so that the platen 2 advances in the direction of arrow A by the conveyor 1. Next, the stopper pin 5 is lifted to release the upstream platen 2 from being locked by the upstream stopper pin 5, the succeeding platen 2 is moved to the upper part of the elevating plate 14, and the above-described operation is repeated.

According to this embodiment, the device having a simple structure can be used without removing the platen 2 from the conveyor 1.
It can be rotated and positioned by any angle. Therefore, a wide variety of works can be assembled on the conveyor 1 in a small space using low-cost equipment. Moreover, since the number of times the robot or the like makes contact with the work is not increased, the quality is improved.

[0016]

As described above, according to the backup device for a conveyor of the present invention, since the work can be rotated and positioned on the conveyor at an arbitrary angle, a wide variety of works can be prepared with low-cost equipment. It can be assembled on the conveyor and the work quality can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of an embodiment of a conveyor backup device of the present invention.

FIG. 2 is a plan view of FIG.

[Explanation of symbols]

 1 Conveyor 2 Platen (Conveying Jig) 9 Air Cylinder (First Driving Means) 25 Stepping Motor (Second Driving Means)

Claims (1)

Claim: What is claimed is: 1. In a conveyor backup device for positioning a carrying jig for stacking works and carrying the carrying jig, the carrying jig is driven up and down at a predetermined position on the conveyor. A backup device for a conveyor, comprising: a first driving means for rotating the conveying jig and a second driving means for rotating the conveying jig at a rising end by a predetermined angle.