JPS626013Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an unloading device that pushes out a transported object to the side after being stopped by a stopper that can move out and back in a transport line, and the transported object pushing device returns to its original position. To provide an unloading device that does not cause a collision between the transported object and the pushing tool even if the next transported object is brought to a position where it is stopped by the stopper before the returning object is finished. It is.

Hereinafter, an embodiment of the present invention will be described based on the attached illustrative drawings. 1 is a tray conveyor, 2 is a roller conveyor disposed perpendicularly to the side of the tray conveyor 1, 3 is an unloading device of the present invention, 4 is a stopper device, and 5 is an object placed on a tray 6. The unloading device 3 includes a crank arm 8 fixed to a drive shaft 7, a swinging arm 10 pivotally connected to the crank arm 8 by a shaft 9, and a rear end pivotally connected to the crank arm 8 by a shaft 11. A bent pusher arm 13 is pivotally connected to the tip of the swinging arm 10 by a shaft 12, and an object pushing device 16 is comprised of rollers 15 pivotally attached to both sides of the tip of the pusher arm 13 by shafts 14. We are prepared. The drive shaft 7 is mounted on a bearing plate 1 erected on a pedestal 17.
8a and 18b, and the shaft 9 is supported by a bearing plate 18c erected on the frame 17. Reference numeral 19 denotes a drive motor attached to the bearing plate 18a, and is operatively connected to the drive shaft 7 via gears 20, 21 and a chain 22.

The stopper device 4 includes a crank arm 24 fixed to a drive shaft 23 supported by bearing plates 18a and 18b, a crank arm 26 pivoted by a shaft 25 to a bearing plate 18d attached to the bearing plate 18a, and a rear end portion. is pivotally connected to the crank arm 24 at a shaft 27, and a stopper arm 29 whose intermediate portion is pivotally connected to the crank arm 26 at a shaft 28 and is rotatable in parallel in the vertical direction; , is interlocked with an intermediate shaft 31 which is interlocked with the drive shaft 7 of the unloading device 3 through a Geneva mechanism 30 through spur gears 32 and 33 having a tooth ratio of 2:1. The Geneva mechanism 30 has two pins 35a and 35b protruding from a rotating plate 34 fixed to the drive shaft 7, and four long grooves formed in the radial direction at 90 degree intervals in a deformable gear 36 fixed to the intermediate shaft 31. 37, the intermediate shaft 31 is rotated intermittently every 90 degrees, and while the pins 35a and 35b are out of the long groove 37, the recessed arc-shaped peripheral surface of the deformable gear 36 38
Then, an arcuate protrusion 39 protruding from the rotating plate 34 is fitted and rotated to lock the deformable gear 36.

Next, to explain how to use it and how it works, as shown in Figures 1 and 2, the stopper arm 2
The motor 1
9 rotates the drive shaft 7 in the direction of the arrow 40, the pin 35a of the Geneva mechanism 30 moves into the deformation gear 36.
This deformed gear 36 is rotated by fitting into the long groove 37 of
The rotation of the deformed gear 36 is transmitted to the drive shaft 2 through the spur gears 32 and 33.
3, and the crank arm 24 rotates 180 degrees. Therefore, the stopper arm 29 is in the standby position A.
1 to the lower limit position A3 via the A2 position. Since the stopper arm 29 at the lower limit position A3 is in a state of crossing the moving path of the conveyed object 5, the conveyed object 5 conveyed by the tray conveyor 1 is moved by the stopper arm 29. I was forced to stop. After the pin 35a of the Geneva mechanism 30 comes off the long groove 37, the deformation gear 36 is locked by the arcuate protrusion 39 until the next pin 35b starts to drive the deformation gear 36, as shown in FIG. Therefore, the stopper arm 29 is fixed at the lower limit position A3.

On the other hand, as the drive shaft 7 rotates 90 degrees, the pusher 16 reaches the position B2 beside the moving path of the conveyed object 5, as shown by the imaginary line in FIG. Therefore, the pusher 16 moves across the moving path of the transported object 5. Therefore, the conveyed object 5 stopped by the stopper arm 29 is pushed onto the roller conveyor 2 by the pushing tool 16. And the extrusion tool 16 is B
When reaching the limit position B5 via each position of 3 and B4, that is, when the drive shaft 7 has rotated approximately 210 degrees,
The pin 35b of the Geneva mechanism 30 shown in FIG. 4 has reached the entrance of the long groove 37 of the deformation gear 36, and the subsequent rotation of the drive shaft 7 causes the deformation gear 36 to rotate 90 degrees in the same direction again. Then, the crank arm 24 rotates 180 degrees in the same direction, and the stopper arm 29 is returned from the lower limit position A3 to the upper limit standby position A1 via the A4 position. On the other hand, reach the original position from 210 degrees of crank arm 8.
By rotating up to 360 degrees, the pushing tool 16 reaches the original standby position B1 from the lower limit position B5 via a detour path passing above the conveyed object moving path as shown at each position B6 and B7.

The conveyed object unloading device according to the present invention can be implemented and used as described above, and its features are that the rear end is pivotally supported by the crank arm, and the intermediate portion is oriented in the distance direction with respect to the conveyance line. A pusher arm is provided that is pivoted on a swinging arm that can swing freely.
A conveyed object pushing tool is provided at the tip of the pusher arm, and the crank arm is equipped with a stopper lifting means (in the embodiment, a Geneva mechanism 30 and a spur gear) for stopping the conveyed object at the position where it is pushed out by the transported object pushing tool. 32, 32) are interlocked and connected, and one rotation of the crank arm causes the object pusher to traverse the object movement path, detour above the object movement path, and return to its original position. In addition, the stopper is configured to return to the original standby position after reaching the conveyed object stopping position before the conveyed object pushing tool enters the conveyed object moving path.

According to the conveyed object unloading device of the present invention, the pushing tool that has pushed out the conveyed object from the conveyance line returns to its original position via a detour route passing above the conveyed object moving path. Therefore, even when the push-out tool is returning, the next object to be transported can enter the unloading position where it is pushed out by this push-out tool. Work efficiency can be improved by shortening the length or increasing the conveyance speed. Further, as described above, by simply rotating the crank arm that drives the object pushing tool once, the stopper is moved to the object stopping position before the object pushing tool enters the moving path of the transported object. is,
The conveyed object stopped by the stopper can be reliably pushed out by the conveyed object pusher. Therefore, not only can costs be reduced compared to the case where the stopper is driven up and down by a dedicated actuator, but also the stopper can be moved up and down in a timely manner, making it possible to move the stopper up and down in a timely manner. It has now become possible to increase work efficiency by shortening the conveyance interval of objects to be conveyed and by increasing the conveyance speed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention in use; Fig. 1 is a longitudinal sectional front view, Fig. 2 is a partially cutaway front view, Fig. 3 is a plan view, and Fig. 4 is an explanatory diagram of the operation of the Geneva mechanism. It is. DESCRIPTION OF SYMBOLS 1... Tray conveyor, 2... Roller conveyor, 3... Unloading device of this invention, 4... Stopper device, 5... Transported object, 7... Drive shaft, 8... Crank arm, 10... Rocking Arm, 13... Pusher arm, 16... Pusher, 19... Drive motor, 20, 21... Gear wheel, 22... Chain, 23... Stopper device drive shaft, 24, 2
6... Crank arm, 29... Stopper arm, 30... Geneva mechanism, 32, 33... Spur gear.

Claims (1)

[Scope of utility model registration request] A pusher arm is provided whose rear end is pivotally supported by a crank arm and whose middle part is pivoted by a swinging arm that can freely swing in a direction toward and away from the conveyance line, and a conveyed object pushing device is provided at the tip of this pusher arm. , the crank arm is interlocked with a lifting drive means for a stopper that stops the transported object at a position where the transported object is pushed out by the transported object pusher;
With one rotation of the crank arm, the object pushing tool traverses the object movement path, detours above the object movement path and returns to its original position, and the stopper moves the object A conveyed object unloading device in which a pushing tool reaches a conveyed object stopping position before entering a conveyed object moving path and then returns to an original standby position.