JPS6150850B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a tray stacking mechanism for transporting parts.

Transport trays filled with parts to assembly plants,
When moving an empty tray,
I often stack trays. This invention is intended to automate this tray stacking operation.

(b) Embodiment of the Invention First, FIG. 1 shows a configuration diagram of an embodiment of the invention.

1 in Figure 1 is 1A and 1B are arms, 2A and 2B
is a roller, 3A and 3B are blocks, 4A and 4B are shafts, 5A and 5B are springs, 6A and 6B are stoppers,
7A is a tray.

Although the arms 1A and 1B in FIG. 1 have corresponding parts, in the following explanation, the arm 1A side will be mainly explained, and the arm 1B side will also be explained as necessary.

A roller 2A is attached to the arm 1A so as to protrude further inward than the arm 1A. In addition, the arm 1A is made rotatable around the axis 4A,
Connect with block 3A.

The spring 5A has a stopper 6A at the bottom of the arm 1A.
to hold arm 1A in place.

Arm 1A and arm 1B are moved up and down by a drive mechanism of the embodiment shown in FIG.

In FIG. 3, 11 is a motor, 12A and 12B are bevel gears, 13A and 13B are bevel gears, 14A and 14B are ball screws, 15A and 15B are ball nuts, and 16A and 16B are bearings.

Bevel gear 12A and bevel gear 13A work together to change the rotation direction of motor 11 at right angles, and bevel gear 12B and bevel gear 13B work together to change the rotation direction of motor 11 at right angles.
Change the rotation direction of 1 to the right angle direction.

When the motor 11 rotates, the ball screw 14A connected to the bevel gear 13A rotates, and the ball screw 14B connected to the bevel gear 13B also rotates in the same direction.

When the motor 11 rotates, the ball screw 14A connected to the bevel gear 13A rotates, and the ball screw 14B connected to the bevel gear 13B also rotates in the same direction.

One end of the ball screw 14A is supported by a bearing 16A, and one end of the ball screw 14B is also supported by a bearing 16B.
It is supported by . Also, ball nut 15A
A ball screw 14A is screwed to the ball nut 15B, and a ball screw 14B is screwed to the ball nut 15B. A block 3A is integrally connected to the ball nut 15A, and a block 3B is integrally connected to the ball nut 15B.

Therefore, when the motor 11 is rotated forward or backward, the ball screws 14A, 14B are rotated forward or backward, respectively.
As the block rotates, the blocks 3A and 3B move up and down.

FIG. 1 shows a state in which the arms 1A and 1B have moved upward and are carrying the tray 7A.

Next, a diagram of changes in FIG. 1 is shown in FIG. 2.

7B and 7C in FIG. 2 are trays, and 8 is a base.

FIG. 2 shows a state in which the arms 1A and 1B of FIG. 1 have moved downward and stacked the tray 7A on top of the tray 7B.

Next, the procedure for stacking trays will be explained with reference to FIGS. 1 and 2.

(A) When there is no tray on the base 8 When the tray 7C is placed on the arms 1A and 1B and the arms 1A and 1B are moved to the bottom, the rollers 2A and 2B hit the corners of the base 8, and while rotating, It travels along the side wall of base 8. Therefore, the roller 2A spreads the arm 1A outward against the force of the spring 5A. The same applies to the arm 1B side. As a result, the tray 7C is left behind on the base 8 from the fighting arms 1A and 1B, and only the arms 1A and 1B move further downward.

In this state, when arm 1A and arm 1B are moved upward, roller 2A and roller 2B just move along the side wall of tray 7C, and tray 7C moves upward.
C remains on base 8 as it is.

(b) When placing the second tray Place the second tray 7B on arm 1A and arm 1.
When the tray 7B is placed on the tray 7B and the arms 1A and 1B are moved downward, the tray 7B is stacked on top of the tray 7C.

FIG. 2 shows the third tray 7A being stacked, with rollers 2A and 2B moving along the side walls of tray 7B.

When the shape of the trays 7A to 7C is small, a pair of arms 1A and 1B is sufficient, but when the shape of the tray is large, the number of arms 1A and 1B is increased as necessary.

In addition, the vertical movement of arm 1A and arm 1B,
If the rotation of arm 1A and arm 1B by roller 2A and roller 2B is detected by a sensor etc.,
Able to work efficiently.

(e) Effects of the Invention According to this invention, trays can be stacked one after another by repeatedly moving the arm up and down. If the trays stacked on the base are moved as they are, the movement of the trays can be automated.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment according to the present invention, and FIG.
The figure is a variation diagram of FIG. 1, and FIG. 3 is a configuration diagram of the drive mechanism of the embodiment. 1A/1B...Arm, 2A/2B...Roller, 3A/3B...Block, 4A/4B...Extracted shaft, 5A/5B...Spring, 6A/6B...Stopper, 7A~7C...Tray , 8...Base.

Claims (1)

[Scope of Claims] 1. A pair of arms that are held rotatably and facing each other at an interval for placing a tray thereon; and a spring that holds the arms in a fixed position; a mutual facing distance that is shorter than the width of the tray; rollers that are attached to the arms so as to protrude inward from the arms; a base for stacking the trays; and a drive mechanism that moves the arms up and down; The tray is placed on the upper part of the arm, the arm is moved downward by the drive mechanism, and when the roller contacts the base, the upper part of the arm is opened outward against the spring, and the tray is moved to the base. A tray stacking mechanism characterized by stacking.