JPH06137399A - Pick and place unit - Google Patents

Abstract

PURPOSE:To provide a rectangular reciprocal motion locus which can be easily extracted accurately and at high speed from operation of rectangular reciprocal motion having different strokes of length and breadth by constituting a simple construction belonging to the machine element of a machine device and applied with a cam mechanism. CONSTITUTION:When a camshaft 9 engaged with a rotary shaft rotating normally and reversely of a rotary air cylinder and the like is rotated normally and reversely in the arrow mark direction, a breadth guide member 5 is slidingly moved right and left in the arrow mark direction inside fixed frame bodies 10, 10 by mean of a breadth cam 7. Further, by rotating the camshaft 9 normally and reversely in the arrow mark direction, a length guide member 6 up and down slidably contacted with the breadth guide member 5 is slidingly moved up and down in the arrow mark direction. A rectangular reciprocal motion locus 6c without the bottom side is obtained on the terminal end part 6b of the length guide member 6 from such motion of right and left and up and down. The terminal end part 6b can be connected to the feed device of rectangular reciprocal motion as a stroke output end having different length and breadth momentum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanical element in a mechanical device, and relates to a mechanical device for obtaining two different motion strokes by mechanically taking a motion trajectory and reciprocating in a rectangular shape.

[0002]

2. Description of the Related Art In the conventional rectangular motion feed mechanism, since the yoke cam mechanism has only one cam, the motion itself causes a square motion, and the vertical and horizontal momentums are the same, and thus the rectangular motion is performed. Is hard to get. Therefore, the cam and the lever are used together to perform the rectangular movement, but in that case, the mechanism is complicated, the number of parts is increased, and the assembly and the adjustment are also complicated, and higher accuracy cannot be obtained.

[0003]

As described above, the square movement of the yoke cam mechanism having only one cam or the rectangular movement using the action of the lever or the like is not taken, but the complicated method is not required. A structural mechanism that has a simple structure and enables rectangular movement to perform rectangular reciprocating movement without a base is set as a problem solving problem.

[0004]

[Means for Solving the Problems] Means for solving the problems are
The square motion of the yoke cam mechanism is doubled and connected to the rotary shaft of the rotary air cylinder, etc. that rotates forward and backward, and the yoke cam is connected to the double-equipped cam shaft with different dimensions, and the momentum of each side of the square motion is changed. The problem was sought by means of changing it to obtain a rectangular reciprocating motion with a lacked base.

[0005]

1 is a schematic diagram of an embodiment in which a conventional yoke cam mechanism is used to create a rectangular motion (square motion). As shown in FIG. 1, horizontal slide 1, vertical slide 2,
The horizontal slides 3 are arranged, and the through holes 1a, 2a (cam holes) 3a penetrating the cam shaft 4 are provided in the center of each, and the cam 4a of the cam shaft 4 corresponds to the square through hole 2a of the vertical slide 2. And they are assembled. FIG. 2 shows that when the cam shaft 4 slidingly contacting the square through hole 2a of the vertical slide 2 sandwiched between the horizontal slide 1 and the horizontal slide 3 and slidingly rotates, the vertical slide 2 moves in a rectangular motion ( Square motion).
2b is a terminal portion for transmitting rectangular motion (square motion).

3 and 4 are schematic diagrams of an embodiment of the present invention. As shown in FIG. 3, a horizontal guide member 5 that slides left and right (described later) in a fixed frame body is provided, and a vertical guide member 6 that slides in contact with the horizontal guide member and slides vertically (described later) is provided. The guide members 5 and 6 are provided with cam hole quadrilaterals 5a and 6a having different sizes, and the lateral cams 7 having different sizes corresponding to the cam hole quadrilaterals 5a and 6a of the guide members respectively.
And a vertical cam 8 are provided on the cam shaft 9 to engage with the rotary shaft 12 of the rotary air cylinder 11 (FIG. 4) that rotates in the forward and reverse directions to configure them so that the vertical guide 6 has different vertical and horizontal momentums. It is possible to generate a rectangular reciprocating motion 6c lacking the above-mentioned bottom. As shown in FIG. 4, when the cam shaft 9 engaged with the rotating shaft 12 of the rotary air cylinder 11 that rotates in the normal and reverse directions rotates in the normal and reverse directions as shown by the reciprocating arrow direction, the lateral guide member 5 causes the lateral guide member 5 to move. Fixed frame 10, 10
(FIG. 3), the vertical guide member 6 slides left and right in the direction of the arrow, and the vertical guide member 6 is slidably brought into contact with the horizontal guide member 5 by the vertical cam 8 by the rotation of the cam shaft 9 in the arrow direction and is slidable up and down. As described above, the vertical left-right vertical movement locus 6c in which the bottom side is absent is obtained at the terminal portion 6b of the vertical guide member 6 as described above. The terminal portion 6b can be connected to the rectangular reciprocating movement feeding device as a stroke output end having different vertical and horizontal momentums.

As described above, the rotary shaft 12 for rotating the rotary air cylinder 11 in the forward and reverse directions is provided on the cam shaft 9, and the lateral guide member 5 which slides left and right in the fixed frame bodies 10 and 10 and its lateral side. A vertical guide member 6 which slides in contact with the guide member and slides up and down is provided, and horizontal cams 7 having different dimensions are provided to the cam hole quadrilaterals 5a and 6a provided on the guide members 5 and 6 having different dimensions. A vertical cam 8 is slidably provided so that the vertical guide 6 can generate a rectangular reciprocating motion with a different bottom and a different vertical and horizontal momentum, and the structure is simplified. It has an advantageous feature that it can stably and precisely operate the rectangular reciprocating motion with different momentums having different vertical and horizontal strokes.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a conventional embodiment.

FIG. 2 is a schematic diagram of a conventional embodiment.

FIG. 3 is a schematic diagram of one embodiment of the present invention.

FIG. 4 is a schematic diagram of one embodiment of the present invention.

[Explanation of sign]

 1 horizontal slide 1a through hole 2 vertical slide 2a cam hole, through hole 3 horizontal slide 3a through hole 4 cam shaft 4a cam 5 horizontal guide 5a cam hole quadrangle 6 vertical guide 6a cam hole quadrangle 6b terminal 6c bottom Missing rectangular motion locus 7 Horizontal cam 8 Vertical cam 9 Cam shaft 10 Fixed frame 11 Rotary air cylinder 12 Rotating shaft rotating forward and backward

Claims (1)

[Claims] 1. A device for mechanically drawing a motion trajectory in a rectangular shape, wherein a rotary shaft, such as a rotary air cylinder, which rotates in the forward and reverse directions, is guided in a lateral guide, and in a lateral guide and in a vertical guide. The horizontal and vertical yoke cams for vertical movement are connected to a cam shaft provided side by side, and the movements of the horizontal and vertical guides are converted into rectangular reciprocating motions with a missing base along with forward and reverse rotations of the rotary shaft. A pick and place unit that is characterized by