JP2556419Y2 - Stroke length change mechanism of IC rod feed mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a stroke length changing mechanism of an IC rod feed mechanism used for an auto handler.

[0002]

2. Description of the Related Art The rod feed mechanism of an IC is described in, for example, Japanese Patent Application No. 2-02025. In the rod feed mechanism, the two blocks integrally lift the lead portion of the IC, then move horizontally to move the IC to the next position, and then the block descends to transport the next IC again. In this way, the rod feed mechanism feeds a plurality of ICs simultaneously at a pitch.

Next, the configuration of a conventional rod feeding mechanism will be described with reference to FIG. In FIG. 4, 1 is a rotating shaft, 1A and 1B are cams, 2 and 3 are arms, 4 and 5 and 6 are links, 7 is a block and 10 is an IC. The cam 1A and the cam 1B are connected to the rotating shaft 1. Roller 2 attached to arm 2
B is guided by the rotation of the cam 1A. The arm 2 makes an angular movement with the rotation of the roller 2B about the axis 2A as the center of rotation. The roller 3B attached to the arm 3 is guided by the rotation of the cam 1B. The arm 3 is a roller
Angular movement is performed by the swing of B.

A pin 2C is provided at an end of the arm 2,
It is held rotatably with the link 4. The left end of the link 4 is rotatably held by a link 5, and the link 5 rotates around a fulcrum 5A. The right end of the link 4 is rotatably held by a link 6, and the link 6 rotates around a fulcrum 6A. When the link 4 moves forward and backward, the pin 6B provided on the link 6 rotates and moves the block 7 up and down. When the arm 3 moves angularly, the pin 3C provided at the end of the arm 3 moves the block 7 forward and backward. An IC 10 is mounted on the block 7.

Next, the operation of FIG. 4 will be described with reference to FIGS. FIG. 5 is a front view of FIG. 4 as viewed from the direction of the rotation shaft 1, and shows an initial state of the rod feed mechanism. 5 to 8, the horizontal axis represents the stroke length (hereinafter, referred to as S), and the vertical axis represents the lift length (hereinafter, referred to as L). In FIG. 5, S =
0, L = L1. When the rotating shaft 1 rotates counterclockwise by α1 from the state shown in FIG. 5, the state shown in FIG. 6 is obtained.

In FIGS. 5 and 6, since the radius of the cam 1A increases, the arm 2 rotates counterclockwise, the link 4 moves rightward, the link 6 rotates clockwise, and the block 7 rotates.
Rises. On the other hand, in FIGS. 5 and 6, since the radius of the cam 1B does not change, the arm 3 does not change. In FIG. 6, S =
0, L = L2> L1. When the rotating shaft 1 rotates counterclockwise by α2 from the state of FIG. 6, the state of FIG. 7 is obtained.

In FIGS. 6 and 7, since the radius of the cam 1B decreases, the arm 3 rotates counterclockwise, and the block 7 moves to the right. 6 and 7, since the radius of the cam 1A does not change, the arm 2 does not change. In FIG. 6, S = S
1, L = L2. When the rotating shaft 1 rotates counterclockwise by α3 from the state of FIG. 7, the state of FIG.

In FIGS. 7 and 8, since the radius of the cam 1A decreases, the arm 2 rotates clockwise, the link 4 moves leftward, the link 6 rotates counterclockwise, and the block 7 rotates.
Descends. 7 and 8, since the radius of the cam 1B does not change, the arm 3 does not change. In FIG. 8, S = S1,
L = L3 <L1. From the state shown in FIG.
When only rotated counterclockwise, the initial state shown in FIG. 5 is obtained.

Next, the operation of FIG. 4 will be described with reference to FIG.
9A shows the relationship between the rotation angle of the rotating shaft 1 and the stroke amount of the block 7, FIG. 9A shows the relationship between the rotating angle of the rotating shaft 1 and the lift length of the block 7, and FIG. The relationship between the stroke length and the lift length of the block 7 during one rotation is shown. In FIG. 9, the block 7 lifts the IC 10 between α1, moves the IC 10 horizontally between α2, and moves down the block 7 between α3 to land the IC 10 at the next position. α
In 4, the block 7 returns to the initial state and lifts the next IC 10. This series of operations is repeated to feed a plurality of ICs 10 at the same time.

[0010]

[Problems to be solved by the invention] In FIG.
Is fixed, the number of ICs mounted on the rod feed is limited. For example, when the type of the IC to be transported changes and the dimensions of the IC are different, there is a case where it is desired to limit the stroke length and increase the number of ICs to be mounted on the rod feed. This invention aims at changing the stroke length of the block 7 by providing a stopper on the arm 3 that translates the block 7 that carries the IC 10 in parallel.

[0011]

In order to achieve this object, according to the present invention, a cam 1A and a cam 1B are connected to a rotating shaft 1, and the arm 2 is angularly moved by the rotation of a roller 2B by the rotation of the cam 1A. The arm 3 is angularly moved by the rotation of the roller 3B by the rotation of the cam 1B, the link 4 is connected to the pin 2C provided at the end of the arm 2, and one end of the link 5 is connected to the first end of the link 4. And one end of the link 6 is connected to the link 4
The pin 6B provided on the link 6 is reciprocally rotated by the forward and backward movement of the link 4, the block 7 on which the IC 10 is mounted is moved up and down, and the arm 3 is reciprocated by the reciprocating rotation of the arm 3. In the rod feed mechanism for moving the block 7 back and forth with the pin 3C provided at the end of the arm 3, a stopper 8 is provided on the rotating surface of the arm 3 and the tip of the stopper 8 contacts the arm 3 by tilting the stopper 8. By restricting the rotation of the arm 3 to change the stroke length of the block 7 and raising the stopper 8, the stopper 8 becomes independent of the arm 3, and the rotation of the arm 3 gives the maximum stroke of the block 7.

[0012]

Next, the construction of the rod feed mechanism according to the present invention is shown in FIG.
This will be described below. Reference numeral 8 in FIG. 1 denotes a stopper, and the other components are the same as those in FIG. In other words, FIG. 1 is obtained by adding a stopper 8 to FIG.
Are arranged on the rotation plane. The stopper 8 is provided with a roller 8A at a tip end thereof, and rotates around a shaft 8B.

Next, the operation of the stopper 8 will be described with reference to FIG. FIG. 2 corresponds to FIG. 7 and is a state diagram in which the stopper 8 is tilted. In FIG. 2, since the stopper 8 limits the rotation of the arm 3, the stroke length S2 is reduced to the maximum stroke S1.
Can be smaller. Since the radius of the cam 1B is reduced, the cam 1B is separated from the roller 3A in FIG. If the stopper 8 is raised from the state of FIG. 2, the state becomes the same as that of FIG.

Next, the operation of FIG. 2 will be described with reference to FIG.
3A shows the relationship between the rotation angle of the rotating shaft 1 and the stroke length of the block 7, and FIG. 3A shows the relationship between the rotating angle of the rotating shaft 1 and the lift length of the block 7, which is the same as FIG. 9A. . FIG. 3C shows the relationship between the stroke length and the lift length of the block 7 when the rotation shaft 1 makes one rotation. The solid line in FIG. 2A is the locus of the stroke length of the block 7 when the stopper 8 is tilted, and the dotted line is the locus of the stroke length of the block 7 when the stopper 8 is raised, which is the same locus as FIG. 9A. . In this invention, the stroke length of the block 7 can be changed by arbitrarily setting the falling angle of the stopper 8.

[0015]

According to the invention, since the arm 3 for moving the block 7 in parallel is provided with the stopper, the stroke length of the block 7 can be changed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a stroke length changing mechanism of a rod feed mechanism according to the present invention.

FIG. 2 is an operation explanatory view of a stopper 8 of FIG. 1;

FIG. 3 is a diagram illustrating a relationship among a rotation angle, a stroke length, and a lift length of the rotation shaft 1 of FIG. 1;

FIG. 4 is a configuration diagram of a conventional rod feeding mechanism.

FIG. 5 is an initial state diagram of FIG. 4;

FIG. 6 is a state diagram in which the rotation shaft 1 has rotated by α1 from the state of FIG. 5;

7 is a state diagram in which the rotation shaft 1 has been rotated by α2 from the state of FIG. 6;

8 is a state diagram in which the rotating shaft 1 has rotated by α3 from the state of FIG. 7;

9 is a diagram showing the relationship between the rotation angle of the rotating shaft 1 of FIG. 4, the stroke length, and the lift length.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotary shaft 1A ・ 1B Cam 2 Arm 2A shaft 2B Roller 2C Pin 3 Arm 3A shaft 3B Roller 4 Link 5 Link 6 Link 6A Pin 7 Block 8 Stopper 10 IC

Claims (1)

(57) [Scope of request for utility model registration] A first cam (1A) and a second cam (1B) are connected to a rotating shaft (1), and the rotation of the first cam (1A) causes the first roller (2B) to swing. The first arm (2) is angularly moved by the rotation of the second cam (1B), and the second arm (3) is angularly moved by the swing of the second roller (3B) by the rotation of the second cam (1B). (4) is connected to a first pin (2C) provided at the end of the first arm (2), and one end of the second link (5) is connected to the first pin of the first link (4). The third link connected to the end
(6) is connected to the second end of the first link (4), and the second link is provided on the third link (6) by moving the first link (4) forward and backward. (6B) is reciprocated, and the block (7) on which the IC (10) is mounted is moved up and down.
The third pin (3C) provided at the end of the block (7)
In the rod feed mechanism for moving the arm forward and backward, a stopper (8) is provided on the rotating surface of the second arm (3), and the stopper (8) is tilted so that the tip of the stopper (8) is moved to the second arm (3). 3), the rotation of the second arm (3) is restricted, the stroke length of the block (7) is changed, and the stopper (8) is raised.
A stroke length changing mechanism of an IC rod feed mechanism, wherein the maximum stroke length of the block (7) is given by rotation of the second arm (3), which is independent of the arm (3).