JPH0632902Y2 - Work reversing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a work reversing device which is arranged on a transfer line and which reverses a large panel or the like according to a predetermined tact and supplies a work.

(Prior art) Conventionally, as a work reversing device, a work on a conveyor line is sucked onto a work suction plate provided at the arm tip,
The arm was moved to a predetermined position on the side of the next conveyor line and turned 180 ° to reverse the work, and the work was supplied to the next conveyor line.

Further, there is a reversing device provided between the transfer lines and utilizing a driving means such as a hydraulic / pneumatic cylinder.

After placing the conveyed work on the pedestal that inverts it, the reversing operation is performed, and after returning the empty pedestal that supplied the work to the original position, the next work is placed. I was able to do it.

Further, when the work is stored in the pallet, the loading worker himself / herself performs the work on the production line to reverse the work if the work is relatively small.

(Problems to be solved by the invention) However, in the above case, the work itself is large such as the rear floor panel, and moreover, one work piece must be loaded in a short time (5 to 6 seconds) according to the tact of the transfer line. If it does not occur, it will be a very hard work for the worker to do by hand, causing a line stop.

Further, in the above-described reversing device, after the work is reversed, the time until the reversing device is returned to the original state is included in the takt time, resulting in unnecessarily lengthening the takt time of the transfer line. Therefore, in order to match one operating time of this reversing device to a required tact, the operating speed of the device must be increased, which may damage the work during reversing or increase the failure rate of the device itself. There was a problem of impairing reliability.

In order to eliminate such a problem, the present invention holds a work by holding a pair of arms close to both sides of a receiver on which the work is placed, and rotates the arms to reverse the work. Provide a work reversing device that separates each arm so that the pair of arms can avoid interference with the next work at the time of returning operation and can carry in the work at the time of this rotation and prevent the takt time of the transfer line from decreasing. The purpose is to do.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention fits a receiver for placing a workpiece to be loaded in a predetermined position and an arm base end portion on a spline shaft, A pair of dogleg-shaped arms whose end portions are arranged on both sides of the receiving body along the conveying direction of the work and which form a downward inclined surface toward the bending corner portion of the arm, and the arm. First driving means for allowing the arm to be spaced apart from and approaching the body and for positioning the free end of the arm below the workpiece mounting surface of the receiving body, and for rotating the spline shaft to rotate the arm integrally at a predetermined angle. Second driving means for moving the work to reverse the work, the work being reversed by the rotation of the arm in a state where the work end portion is locked to the bending angle portion of the arm, and when the arm returns, Arm of work By expanding the range of positions of the moving trajectory it is characterized in that the rotatable.

(Operation) With such a configuration, the pair of arms are
The driving means approaches the receiving body on which the work is placed,
After the work is held by the lower inclined surface of the arm free end so that the free end of the arm is located below the work mounting surface of the receiver, the spline shaft is rotated by the second drive means, and this rotation is performed. The force is transmitted to the base end portion of the arm to rotate the pair of arms integrally by a predetermined angle.

Therefore, the work on the arm is reversed and supplied to the next transfer line when the arm is reversed.

After that, the pair of arms, which have reversed the work, are separated so as to widen the arm interval and perform the returning operation, so that the return rotation locus of the arm is located outside the rotation locus of the work.

Therefore, before the pair of arms returns to the original rest position, for example, before the arms are reversed and the work is supplied to the next transfer line, the next work can be carried into the receiving body. The wasteful time of supplying the work to the reversing device after the completion of the return operation is confirmed, and the tact time of the transfer line is not reduced.

(Example) The Example of this invention is described based on drawing.

1 to 3, the reversing device of the present invention comprises a pair of skids 3 and 3 as a receiver for mounting a work 2 such as a panel on a base 1 at a predetermined position, and a pair of skids 3. As a pair of arms 4 and 4 provided in parallel on both sides and spaced apart from and approaching each skid 3, and a coupling member that is fitted to the base end portion 4a of each arm 4 and is hung between the pair of arms 4. Cylinder drive device 7 as second drive means including the spline shaft 5 and a transmission member 6 at one end of the spline shaft 5.
It is composed of and.

The pair of skids 3 and 3 are inclined along the transfer line, and the work 2 is loaded with the stop plate 8 fixed to one end thereof.
Is placed in place. A proximity switch 9 for workpiece detection is mounted on the base 1 near the stop plate 8 side between the skids 3, 3.

Since the pair of arms 4 and 4 is approximately matched to the inclination angle of the skid 3, it has a dogleg shape when viewed from the side of the device. At the workpiece mounting position, the free end 4b of the arm is more than the skid surface. Located slightly lower. Further, a bearing 10 is arranged at the base end portion 4a of the arm, and a spline shaft 5 extending long in the rear portion of the base 1 is fitted to the bearings 10, 10.

The bearings 10 and 10 are supported by brackets 11 and 11, and the side surface of each bracket 11 has a spline shaft 5
The rod tip portions 12a of the cylinder devices 12 and 12 as the first driving means provided on the base 1 are attached and fixed.

The cylinder driving device 7 drives the cylinder 14 fixed to a mounting member provided on a side portion of the base 1, and is a transmission member including a pinion gear 15 mounted on the spline shaft 5 and a rack gear 16 mounted on a rod of the cylinder 14. 6 is interposed. The reciprocating motion of the cylinder 14 is a rack gear 16.
And the pinion gear 15 is rotated forward and backward. This rotational force is transmitted to the spline shaft 5 to rotate the pair of arms 4.

A dog 17 is attached to a predetermined position on the side surface of the rack gear 16, and the dog 2 can carry the next work 2 onto the skid 3 after the work 2 is held by the arm 4 and separated from the skid 3. The work feed limit switch 18 is operated at this position.

Next, the operation of the reversing device of the present invention will be described.

First, when the work 2 is loaded onto the pair of skids 3 from the transfer line, the work 2 slides on the inclined skids 3 and contacts the stop plate 8 to stop the movement thereof.

When the work 2 is placed on the skid 3, the proximity switch 9
Is operated, the rod 12a of the cylinder device 12 retracts, and the base ends 4a of the pair of arms 4 are guided by the spline shaft 5 to move from the P position indicated by the arrow in FIG. 1 to the Q position.

After that, when the cylinder 14 is operated to move the rack gear 16 forward, the pinion gear 15 rotates, and the spline shaft 5 also rotates accordingly. In this state, as is apparent from FIG. 2, the work 2 separated from the receiving body is reversed to the transfer line by reversing the work 2 with the work end being locked to the bent corner of the doglegged arm 4. Supply.

During this reversing operation, the dog 17 of the rack gear 16 pushes the work feeding limit switch 18, so that the next work 2 is placed on the pair of skids 3.

In addition, after the work 2 is reversed and supplied, the rod 12a of the cylinder device 12 moves forward to move the pair of arms 4 in the direction in which they are separated from each other, and then, as the rack gear of the cylinder 14 moves backward, The arm 4 reverses in the direction of arrow R in FIG. 2 and returns to the original position to complete one cycle.

In the present embodiment, the method using the gear and the cylinder is adopted as the driving means for driving the pair of arms 4, but another driving device capable of rotating the pair of arms by rotating the spline shaft 5 in the forward and reverse directions is used. May be.

(Effect of the Invention) As is apparent from the above description, in the present invention, the arm slides on the spline shaft by the first drive means to approach the receiving body, and the work placed on the receiving body is moved downward. From the arm to the lower inclined surface of the free end. Moreover, since the arm has a dogleg shape, the workpiece end is locked to the bending corner of the arm during the reversing operation of the arm and the arm rotates at a high speed, so that the workpiece is reversed from the vertical position when it is not restrained. There is no fear that the work will fall off during the process of reaching the position.

Therefore, since the reversing device of the present invention is placed in the predetermined position by simply carrying the work into the receiving body, the work gripping step can be omitted.

Therefore, it is not necessary to grip and position the work at a low speed so as not to damage or deform the work during the gripping operation.

Further, according to the present invention, since the arm can be expanded during the operation of reversing the arm and returning to the original position, the next work can be placed on the receiver immediately after the start of the reversing operation of the arm. Along with the elimination of the work gripping process, the cycle time of the process of reversing and supplying the work can be shortened.

Further, since the work end can be locked to the bent corner of the arm, positioning can be performed regardless of the size of the work, and the range of application to different parts can be widened and the device can be generalized.

Further, since the arm is moved away from the work piece and approaching the workpiece and the rotation reversing operation is performed on one spline shaft, the support structure of the arm can be simplified.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment according to the present invention. FIG. 2 is a side view showing the operation of the apparatus in FIG. 1. FIG. 3 is a part showing an engagement relationship between a spline shaft and a base end portion of an arm. It is a detailed sectional view. 2 ... Work, 3 ... Pair of skids (receiver) 4 ... Pair of arms, 4a ... Base end 4b ... Free end, 5 ... Spline shaft 7 ... Cylinder drive device

Claims (1)

[Scope of utility model registration request] 1. A receiving body for mounting a work to be carried in at a predetermined position, and an arm base end portion fitted to a spline shaft, and an arm free end portion of the receiving body along the conveyance direction of the work. A pair of dog-legged arms arranged on both sides and forming a downward slope toward the bending corner of the arm; A first driving means for locating the receiving body below the work mounting surface; and a second driving means for rotationally driving the spline shaft to integrally rotate the arm by a predetermined angle to reverse the work. , The work is inverted by the rotation of the arm with the end of the work being locked to the bent corner of the arm, and when the arm is returned, each arm is expanded to a position outside the range of the rotation trajectory of the work. It can be opened and rotated A work reversing device characterized in that