JPH0680930B2 - Parts feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a component supply device, and more specifically to an IC.
The present invention relates to a device suitable for supplying electronic components such as the above to the next process mechanism mounted on a printed circuit board one by one.

[Prior Art] A device for arranging a large number of parts in a line and supplying the parts to the next process mechanism one by one in response to a call-in command from the next process mechanism is, for example, No. 57-23728 and No. 60728. −151838
And JP-A-58-168251.

In this type of component supply device, when the components are supplied to the next process mechanism one by one, it is important to reliably separate the first component and the second and subsequent components.

In these devices, stoppers that press the first and second parts are provided independently, and the stoppers that hold and hold the first and second parts are held by each stopper. Apart only the first part, separate the first part and the second part, send out the part, return the stopper holding the first part, and retract the stopper holding the second part. ,
The second part was held by the stopper that held the first part, and the stopper that held the second part was held by the third part. The same operation is repeated for the first part and the second part to separate the parts one by one.

[Problems to be Solved by the Invention] In the above-described conventional technology, if the adjacent components are completely separated, the components can be reliably delivered one by one. However, in the case of an integrated circuit having leads, the lead of the first integrated circuit is caught between the leads of the second integrated circuit, or the burrs at the time of molding in the chip are caught, so that the first integrated circuit is integrated. When the circuit and the second integrated circuit are not well separated from each other, when these are expected to occur, vibration is applied to the integrated circuit or air is blown into the integrated circuit to separate the integrated circuits. Even if such a measure does not cause a problem in the component supply device having a small number of lanes, in a device having a large number of lanes of tens of lanes, it not only hinders compactness but also causes a considerable cost increase.

An object of the present invention is to provide an improved component supply device capable of reliably separating components from each other without using means for separating the first component from the second component. .

[Means for Solving the Problems] In order to achieve the above object, a component supply device of the present invention is a buffer for arranging a large number of components in a line on a slip surface of an inclined guide groove and dropping the weight by gravity. A first stopper that performs a motion between a holding position that engages with the first component to stop its movement and a separated position that allows it to escape and the second component is pressed to prevent its movement. A second stopper that performs a motion between a holding position to be stopped and a spaced position that escapes from the component and allows its movement is provided, and the first stopper is located at the spaced position and the second stopper is located at the holding position. The movement and the movement to position the first stopper in the holding position and the second stopper in the separated position are made to these stoppers to send the parts one by one from the buffer. The lid is made of an elastic body that always holds the second component, and is linked to the first stopper so that the first stopper is in the separated state when the first stopper is at the holding position. The component holding portion is formed in a shape that generates a component force in a direction opposite to the direction in which the component itself falls.

[Operation] When the first stopper is in the separated position and the second stopper is in the holding state, the first component becomes free and falls by its own weight, and the second component is prevented from falling by its own weight. When the is in the holding position and the second stopper is in the separated state, the second part is moved to the first stopper and is prevented from falling by gravity along with the following parts.By repeating the above, the parts are separated one by one. Although it is sent out from the buffer, in the present invention, when the second stopper is in the holding state and the part holding portion of the stopper comes into contact with the second part, the part is held and at the same time, the leading part falls by its own weight. A component force in the opposite direction acts on the second component, moving it in the direction opposite to the direction of movement of the leading component, ensuring separation of these components. For this reason, even if the parts are made of integrated circuits, the leads of the second integrated circuit get stuck between the leads of the first integrated circuit, or burrs generated during molding on the chips of both integrated circuits are caught, Separation can be reliably performed.

[Embodiment] An embodiment of the component supply device of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a sectional view of the component supply apparatus according to the present invention, and FIG. 2 is a perspective view of the separator stopper in FIG.

In FIG. 1, 1 is a buffer for stocking a large number of components, and 2 is a shuttle for transporting the components to the next process apparatus installed on the component delivery side of the buffer 1.

The buffer 1 is formed with a plurality of rows of inclined guide grooves 3 corresponding to the number of types of parts, and a large number of parts are arranged in a line on the sliding surface of each guide groove 3 and dropped by gravity. The upper surface of the guide groove 3 is covered with a cover 8, and the cover 8 is fixed to the buffer. The cover itself is made of transparent resin so that the flow of parts can be visually checked.

The shuttle 2 is guided by the slide surface 5 of the gantry 4 and can reciprocate in the direction perpendicular to the plane of the drawing to move between the buffer 1 and the next process device. A component request lever 6 is incorporated in the shuttle 2. The parts request lever 6 is connected to a pin 20 on the base of the shuttle 2. The spiral spring 7 is inserted into the pin 20 with both ends in contact with the component request lever 6 and the shuttle 2, and the component request lever 6 is rotated counterclockwise.
The maximum rotation angle of the parts request lever 6 is the member on the shuttle 2.
Limited by 18.

A drive shaft 9 is arranged near the tip of the component request lever 6. Drive shaft 9 is cover 8
Is supported by a support 10 on the upper surface of the shaft and is made to rotate in the direction of the arrow by a rotary solenoid (not shown). A plate cam 11 is fixedly mounted on the peripheral surface of the drive shaft 9. The component request lever 6 is arranged so that its tip portion contacts the plate cam 11, and when the drive shaft 9 rotates, the tip portion of the component request lever 6 is moved by the plate cam 11 from the point A to the point B. It is made to displace.

Further, on the upper surface of the cover 8 covering the guide groove 3 of the buffer 1, a stopper 12 for holding the leading component 100A and a separate member for separating and holding the second component 100B from the leading component 100A. A stopper 13 is provided.

The stopper 12 has an inverted U-shaped cross section with both ends open, and has a pawl 21 extending toward the leading part 100A at the rear end.
Has a pin 17 inside. The stopper 12 is a shaft 22 held by a bearing member attached to the cover 8.
It is fixed to. The spiral spring 14 has a stopper 12 at one end.
When the external force does not act on the stopper 12, the spring is attached to the inner surface of
Although the stopper 12 is rotated by the spring force of 14 so that the pawl 21 holds the leading component 100A, the component request lever 6 rotates about the pin 20 and the roller 15 at the tip of the stopper 12 is rotated. Press, and the tip of stopper 12 is point A
From the point to the point B, the claw 21 is the top part 100A.
The stopper 12 is rotated so as to escape from it. The pin 17 is arranged parallel to the shaft 22, and both ends thereof are fixed to a wall of the stopper 12 parallel to the paper surface.

The separate stopper 13 has a hook portion 13a and a pressing portion 13b formed at its tip. The pressing portion 13b is formed by bending the center of the separate stopper 13 downward and bending the tip further upward, and the hook portion 13a bends both sides of the pressing portion 13b in the separate stopper 13 upward and bends the tip further downward. It is formed by In the separate stopper 13, the base portion is fixed to the cover 8 by the screw 16, the hook portion 13a is engaged with the pin 17 attached to the stopper 12, and the pressing portion 13b is pressed.
Through the opening 19 in the cover 8 to come into contact with the upper surface of the second component 100B. Further, the separate stopper 13 is made of an elastic body, and the stopper 12
When the pawl 21 is in the state shown in FIG. 1 in which the leading part 100A is prevented from falling by its own weight, the hook portion 13a is locked by the stopper 1
Although it is lifted by the second pin 17 and elastically deformed, the pressing portion 13b is separated from the second component 100B, but the stopper 12 is pushed by the component request lever 6, and the pawl 21 of the stopper 12 escapes from the leading component 100A, Stopper 12 pin 17
Is elastically restored when it is separated from the hook portion 13a, and the pressing portion 13b is pressed against the upper surface of the second component 100B. The tip of the pressing portion 13b is provided on the separate stopper 13 so as to face the direction opposite to the shuttle 2 and obliquely intersect the guide groove 3 of the buffer 1 or the self-weight falling direction of the parts 100A and 100B. When pressed against the component 100B, a component force in a direction opposite to the direction in which the component 100B falls by its own weight is generated.

Next, the operation of this component supply device will be described.

The state of FIG. 1, that is, the top part 10 by the stopper 12
When the drive shaft 9 is rotated by the rotary solenoid in the direction of the arrow while 0A is held, the tip end of the component request lever 6 in the lane where the shuttle 2 is stopped is hit by the plate cam 11 and the component request lever The tip portion of 6 is displaced from the position of point A to the position of point B. In this process, as shown in FIG. 3, at the point A ', where the tip of the component request lever 6 is slightly before the point A, the stopper 12 rotates in the direction to release the holding of the leading component 100A and the pin 17 Moves downward together with the stopper 12, and the pressing portion 13b starts pressing the upper surface of the second component 100B by the elastic force of the separate stopper 13. Then, as shown in FIG. 4, when the tip of the component request lever 6 is displaced to the point B, the stopper is released.
The claw 21 of the 12 escapes from the leading part 100A, completely releases the holding of the leading part 100A by the stopper 12, and causes the part 100A to drop on the shuttle 2 by its own weight.
Is released from the hook portion 13a of the separate stopper 13, and the pressing portion 13b is strongly pressed against the upper surface of the second component 100B by the elastic force of the separate stopper 13, and the component 100B and the subsequent component not shown is the leading component. Prevents it from falling under its own weight with 100A.

At this time, in the component supply apparatus according to the present invention, the tip of the pressing portion 13b of the separate stopper 13 is directed in the direction opposite to the shuttle 2 and diagonally intersects with the guide groove 3 of the buffer 1 or the gravity dropping direction of the components 100A and 100B. Since it is provided on the separate stopper 13, the pressing portion 13b of the separate stopper 13 is provided on the second component 100.
When it is pressed against B, as shown in FIG. 2, a component force F1 and a component force F2 against the pressing force F of the separate stopper 13 are produced, and the component force F1 acts as a force for holding the second component 100B. , The component force F2 acts as a force to move the second component 100B and the component subsequent to the second component 100B in the direction opposite to the self-weight drop direction of the first component 100A, and the second component 10
0B can be separated from the leading part 100A.

Therefore, the component is, for example, an integrated circuit, and the lead of the first integrated circuit 100A fits between the leads of the second integrated circuit 100B, or the integrated circuit 100A and the integrated circuit 100B.
Even if burrs are caught in the chip of molding, the component force F2 moves the second integrated circuit 100B and the integrated circuit subsequent to the integrated circuit in a direction opposite to the self-weight falling direction of the first integrated circuit 100A. , The first integrated circuit 100A can be surely separated from the second integrated circuit 100B, and the vibration can be applied to the integrated circuit to separate the integrated circuits from each other. Only the leading integrated circuit 100A can be dropped by its own weight without means for separating.

When the leading part 100A is fed to the shuttle 2 as described above, the shuttle 2 is slid together with the part request lever 6 to the next process device. When the part 100A is sent to the next process device, the shuttle 2 returns to the position corresponding to the buffer 1, and the plate cam 11 moves the part request lever 6 during this time.
Away from the component request lever 6 is returned to the point A by the spiral spring 7 and the stopper 12 is returned to the original position by the spiral spring 14, and the separate stopper 13 is lifted by the pin 17 of the stopper 12 to move to the second position. Parts 10
It escapes from 0B, the part falls by its own weight and is held by the pawl 21 of the stopper 12, and the third part (not shown) falls by its own weight to the position of the second part, resulting in the state shown in FIG. The same operation is performed again with the second part as the first part and the third part as the second part.

[Advantages of the Invention] According to the present invention, it is possible to reliably separate the second and subsequent parts from the first part, and to eliminate the need for means for separating the parts. Can be made compact and cost can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing a component supply device of the present invention, FIG. 2 is a perspective view of the separate stopper in FIG. 1, and FIGS. 3 and 4 are sectional views showing an operating state. 1 ... Buffer, 2 ... Shuttle, 3 ... Guide groove, 6 ...
… Parts request lever, 9 …… Drive shaft, 11 …… Plate cam, 12 …… First stopper, 13 …… Second stopper, 13a …… Hook part, 13b …… Pressing part, 100A ……
The first part, 100B ... the second part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mineo Higashi, 390 Muramatsu, Shimizu City, Shizuoka Prefecture, Shimizu Plant, Hitachi, Ltd. (56) References JP 58-168251 (JP, A) 23728 (JP, U) Actually opened 60-151838 (JP, U) Actually opened 60-61797 (JP, U)

Claims (1)

[Claims] 1. A buffer for arranging a large number of parts in a line on the sliding surface of an inclined guide groove and dropping them by gravity, a holding position for engaging the leading part and stopping its movement, and a escape for the part. Motion between a first stopper that performs a motion between a separated position that allows the movement of the second component, a holding position that presses the second component to stop its movement, and a separation position that escapes from the component and allows the movement. And a second stopper for performing the movement for moving the first stopper to the separating position and the second stopper to the holding position, and the first stopper to the holding position and the second stopper to the separating position. In the component supply device that causes movement to these stoppers to feed the components one by one from the buffer, the second stopper is made of an elastic body that always holds the second component, When the first stopper is in the holding position, it is linked to the first stopper so as to be in a separated state by the first stopper, and the component holding portion generates a component force in the direction opposite to the component weight drop direction. A component supply device having a shape.