JPH02220497A - Electronic-component feed apparatus - Google Patents

Abstract

PURPOSE:To enhance the reliability of a feeding operation of an electronic component by a method wherein a spring member is fed by using a driving roller and a pressure roller and the electronic component inside a cylindrical stick is pushed out by using the spring member. CONSTITUTION:A spring member 10 is fed in a state that it is sandwiched between a driving roller 20 and a pressure roller 21; an electronic component inside a cylindrical stick 4 is pushed out by using the spring member 10 and is transferred to a prescribed electronic-component delivery position. ln this manner, the electronic component inside the cylindrical stick 4 is pushed out forcibly by using the spring member 10. Thereby, a transfer force of the electronic component becomes definite irrespective of the number of electronic components inside the cylindrical stick 4; reliability of a feed operation of the electronic component is enhanced; the cylindrical stick 4 can be arranged horizontally.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electronic component supply vc device suitable for supplying irregularly shaped electronic components and the like in an electronic component insertion device.

(Summary of the Invention) The present invention is an electronic component supply vca suitable for supplying irregularly shaped electronic components, etc., by pushing out electronic components in a cylindrical stick by sandwiching a spring member between a drive roller and a pressing roller and letting it out. This configuration improves the reliability of electronic component supply and simplifies the mechanism for feeding out the spring member.

(Prior Art) Conventionally, the present applicant has proposed a method in which a component container housing electronic components is held at an angle of 45 degrees with respect to a horizontal plane, and the electronic components inside the component container are transferred using gravity. An electronic component supply device has been proposed in Japanese Utility Model Application No. 62-34524.

(Issues that the invention seeks to solve) By the way, with the conventional structure that uses gravity to transfer electronic components inside a component container, the number of electronic components in the component container decreases when parts are supplied. There is a problem that the force to lower the electronic component becomes weaker as the electronic component is moved downward, and the position of the electronic component that is supplied at an angle with respect to the horizontal plane must be changed to horizontal so that it can be chucked by the insertion head. A mechanism is needed to do this.

In view of the above points, the present invention improves the reliability of supplying electronic components by forcibly pushing out the electronic components by feeding out a spring member into a cylindrical stick storing a large number of electronic components in one row. It is an object of the present invention to provide an electronic component feeding device which eliminates the need to change the attitude of an electronic component with respect to an insertion head and has a simplified mechanism.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an electronic component supply device that holds cylindrical sticks containing a large number of electronic components arranged in one row in a multi-tiered state. The rotated spring member is fed out while being sandwiched between a rotatably driven drive roller and a pressing roller, and the electronic component inside the cylindrical stick is pushed out by the spring member and transferred to a predetermined electronic component delivery position.

(Function) In the electronic component supply device of the present invention, since the electronic component inside the cylindrical stick is forcibly pushed out by the spring member,
Regardless of the number 1j of electronic components in the cylindrical stick, the force for transporting the electronic components is constant, and the electronic component feeding operation is reliable.

Furthermore, the spring member is fed out while being sandwiched between a drive roller and a presser roller that are rotatably driven by an electric motor, and the mechanism for feeding out the spring member is simple. Furthermore, there is no need to use gravity to transfer electronic components, and the cylindrical stick can be placed horizontally; in this case,
The most advanced electronic component can be directly chucked by the insertion head without changing the posture of the electronic component (the most advanced one) at the electronic component delivery position, and the mechanism around the electronic component delivery position can be simplified.

(Example) Hereinafter, an example of the electronic component supply apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is a front view of the left side component of the electronic component supply device 1;
2 is a front view of the right side component, FIG. 3 is a plan view of the left side component, FIG. 4 is a left side view of the same, and FIG. 5 is a perspective view showing the overall schematic configuration of the electronic component supply device 1. It is.

As shown in Fig. 1, a left stick holder 3A is fixed to the left side of the device frame (vertical plate portion) 2 of the electronic component supply device 1, and as shown in Fig.
A right stick holder 3B is fixed to the right side of the holder, and a rectangular cylindrical stick 4 containing a large number of electronic components arranged in a row is horizontally arranged between both holders.

A component side 40 is fixed to the right holder 3B.

Figure 5 shows the number of electronic components! 11 is a perspective view schematically showing the overall configuration of the electronic component supply device 1, and the electronic component 50 sent to the component delivery position Q by the electronic component supply device 1 is chucked and inserted into the printed circuit board side for insertion. rad 6
0 is shown.

1 to 5, an elongated hole 41 is formed in the device frame 2 in the horizontal direction, and the vertical part of the mounting base 42 is connected to the elongated hole 41.
The tightening is fixed by a port 43 passing through 1. Then, the left stick holder 3A is fixed to the mounting base 42. In addition, the left and right stick holders 3A can be adjusted by adjusting the position of the left stick holder 3A using the elongated hole 41.

3B regulates the positions of both ends of the square tubular stick 4.

A bracket 11 is fixed to the left end of the mounting base 42, and a spring member 1 is formed by winding a wire into a long coil spring shape.
The central axis 6 of the drum 5 on which the wire is wound is the bracket 11.
It is rotatably supported. One end of a mainspring (wound spring) 12 is fixed to a central shaft 6 integrated into the drum 5,
The other end of the mainspring 12 wound around the central shaft 6 is fixed to the bracket side. This mainspring 12 urges the drum 5 in a direction to wind up the spring member 10. A spiral groove 7 for winding up the spring member is formed on the outer peripheral surface of the drum 5, and the spring members 10 can be wound in alignment while being fitted into the spiral groove 7. In addition, a stopper convex portion 8 is provided near the end of the spiral groove 7.
In order to prevent the spring member 10 from derailing, a presser plate 13 is fixed to the bracket 11 side and extends across the outer peripheral surface of the drum. Note that the reason for providing the stopper convex portion 8 will be described later.

In order to feed out the spring member 10 into the square tubular stick 4, a driving roller 20 and a pressing roller 21 are arranged on a mounting base 42 as shown in FIG. 153. That is, the electric motor 8!25 and the reducer 26 assembled to reduce the rotation speed thereof are attached to the lower side of the mounting base 42, and the drive roller 20 is fixed to the rotational drive shaft 27 of the reducer 26. There is. Further, the reduction gear 26 is used to obtain the required braking force when the electric motor 25 is stopped. The pressing roller 21 is attached to a pin 22 on the mounting base 42.
The substantially four semicircular plate 23 is pivoted by a pin 23A on the substantially four semicircular plate 23 which is pivotably supported by the four semicircular plate 23. ing. Furthermore, an air cylinder 30 for winding up the spring member is fixed on the mounting base 42 , and the rod of the air cylinder 30 pushes the approximately four semicircular plates 23 when extending, thereby separating the press roller 21 from the drive roller 20 . It works to make things happen. The air sill 30 is a spring member 1
0 is in a linear motion state, and the spring member 10 pulled out from the drum 5 is pressed and held between the drive roller 20 and the pressing roller 21, and the electric! ! The rotation of the drive roller 20 accompanying the operation of the rfi 25 causes it to be fed out in the direction of arrow P.

As shown in FIG. 2, at the lower end of the right stick holder 3B, there is a support surface 51 that supports the lower surface of the rectangular cylindrical stick 4.
A fixed stick receiver 52 having a holder is fixed thereto. On the other hand, as shown in FIG. 1, a slider 53, which forms part of the mechanism for exchanging sticks, is provided so as to be slidable in the lateral direction with respect to the mounting base 42, and the slider 53 has a movable stick receiver 5.
5 is fixed. And the movable stick receiver 55
is protruding inside the left stick holder 3A, the rectangular cylindrical sticks 4 containing a large number of electronic components arranged in one row are stacked in multiple stages by the movable stick receiver 55, the fixed stick receiver 52, and the left and right stick holders 3A and 3B. It can be held horizontally. A spring member 10 formed by winding a wire into the shape of a long coil spring enters the square tubular stick 4 at the bottom from the left end and pushes out the electronic components 50 arranged in one row inside. It's about to go.

A mounting base 42 is also provided as a mechanism for exchanging sticks.
An air sill 61 for stick replacement fixed to the side, a slider 62 provided slidably in the lateral direction with respect to the mounting base 42, a fall prevention claw 63 fixed to the tip of the slider 62, and a middle A connecting lever 65 whose portion is pivotally connected to the mounting base side with a pin 64 and whose both ends are loosely attached to the slider 53, 62, and an extension spring 66 that urges the connecting lever 65 in a counterclockwise direction are provided. There is.

The stick replacement operation is performed by extending the rod of the stick replacement air cylinder 61. In other words, the slider 62 slides to the right by the rod of the air cylinder 61, and the inside of the rectangular cylindrical stick 4 second from the bottom is moved. The fall prevention claw 63 enters, and in parallel with this movement, the slider 53 slides to the left, and the movable stick receiver 55 retreats.

Then, after the fall prevention claw 63 engages with the second square tubular stick 4 from the bottom, the movable stick receiver 55 comes off from the lowest square tubular stick 4, and the bottom square tubular stick 4 is moved by its own weight. fall downwards. Thereafter, the rod of the air cylinder 61 returns to the linear movement state, the connecting lever 65 moves counterclockwise under the action of the extension spring 66, the movable stick receiver 55 moves forward, and the drop prevention claw 63 retreats to the second position from the bottom. As a result, the second square tubular stick 4 from the bottom falls to the lowest position, and the fixed stick receiver 52 and the movable stick receiver 55
In addition, the rod of the air cylinder 30 for winding up the spring member, which is supported horizontally by the
1 to release the spring member 10, and when winding up the spring member 10 with the mainspring 12 on the drum side, the spring member 10
In order to detect that the stick has been pulled out of the rectangular tubular stick 4, a rewind detection switch 70 is installed on the mounting base 4 as shown in FIG.
It is located on 2.

As shown in FIGS. 2, 6, and 8, the bottom right side of the right stick holder 3B has a component sliding surface F.
A component guide (chute) 40 having a straight line id rpt 71 is fixed, and the component guide 40 communicates with the right end opening of the lowermost square tubular stick 4. A component holder 72 is fixed to the upper surface of this component id 40 for regulating the upper surface of the electronic component 50 located next to and after the electronic component delivery position Q. Also, parts ID 40
A component stopper 74 having a stopper surface 73 is fixed to the tip of the component stopper 74, and is moved on the component sliding surface F so that the electronic component 50 still comes into contact with it.

An overload detection section 80 as shown in FIG. 7 is provided at the tip of the spring member 10 to detect that the pressing force is above a certain value. That is, an insulating support member 82 is fitted inside the coil spring portion of the spring member 10, and a movable contact shaft 83 is attached to pass through the insulating support member 82. The movable contact shaft 83 is urged in the projecting direction by a compression bone 84 provided within the insulating support member 82, and after being moved, an insulating head 85 is fixed to the tip of the α shaft 83. A pair of fixed contacts 86A and 86B are disposed on the insulating support member 82 and are opposed to the ends of the movable contact shaft 83. In addition, 81 is an insulating tube, 87 is a connection Lee,
It is a line.

Such an overload detection unit 80 detects when the electronic component 50 is clogged inside the rectangular cylindrical stick 4 or in the middle of the component guide 40, or when the electronic component is missing from the rectangular cylindrical stick 4 or the component guide 40. 85 is pushed against the force of the compression spring 84, and the double-sided constant contacts 86A, 86 are pressed at the end of the movable contact shaft 83.
Detection is made when B is short-circuited.

As shown in FIGS. 2 and 8, a tip component detection switch 90 is fixed to the tip side of the component id 40, and the detection roller 91 of the switch 90 is located at a higher position than the component stopper 74, and the electronic component Although it is pushed at a height of 50, it is set so that it is not pushed at the tip jaWi portion 85 of the spring member 10. Therefore, the detection roller 91 of the switch 90 is pressed when the most advanced electronic component 50 is located at the electronic component delivery position Q as shown in FIG. As shown in FIG. 8, the roller 91 is not pressed and the absence of electronic components is detected.

Next, electronic parts supply! ! 1m! The overall operation of 1 will be explained. Square cylindrical sticks 4 are horizontally stacked in multiple stages between left and right stick holders 3A and 3B, and are supported by a fixed stick receiver 52 and a movable stick receiver 55. Then, the spring member 10 wound around the drum 5 is pulled out from the shoulder between the outer peripheral surface of the drum and the pressing plate 13, and is held between the driving roller 20 and the pressing roller 21 that is in pressure contact with the driving roller 20.

When the supply of the electronic component 50 is instructed, the electric @ 25 with a speed reducer is operated to rotate the drive roller 20 by a predetermined amount, and the spring member 10 is extended a predetermined length into the square tubular stick 4 at the lowest stage, and the spring member 10 is inserted into the square tubular stick 4 at the lowest stage. The electronic components 50 housed in one row in the shaped stick 4 are forcibly pushed out.
Straight line of the id 40 - Electronic component delivery position f at the tip of the id groove 71!
The most advanced electronic component 50 arrives at Q. When the electronic component 50 comes into contact with the stopper surface 73 and stops as shown in FIG. 2, the detection roller 91 of the tip component detection switch 90 is pushed.
The switch 90 detects the presence of electronic components and switches the electric motor 25
At the same time, the insertion head 60 of FIG. The most advanced electronic component is chucked by the insertion head 60 and inserted into the printed circuit board.

Since the electronic component transfer position Q becomes empty due to the operation of the insertion head 60 to take out the electronic component, the electric motor 25 is operated again to feed out the spring member 10 and transfer the electronic component to the position Q. This kind of operation is performed using the square tubular stick 4 at the bottom.
and is repeatedly executed until there are no more electronic components in the component ID 40.

After the last electronic component is taken out by the insertion head 60, when the electric motor 25 feeds out the spring member 10, there is no electronic component, so the tip component detection switch 90 continues to detect no electronic component in the state shown in Figure @8. .

As a result, the electric motor 25 continues to extend the spring member 10, and the head 85 of the overload detection section 80 shown in FIG. 7 abuts against the stopper surface 73 and is strongly pressed. As a result,
A pair of fixed contacts 86A and 86B of the overload detection section 80 are short-circuited to detect an overload state. This overload detection allows
The electric motor 8!25 stops, while the rod of the rewinding air cylinder 30 extends and rotates the approximately four semicircular plates 23.
The pressing roller 21 is separated from the driving roller 20 to release the spring member 10. Therefore, the mainspring 12 on the drum 5 side (in which unwinding force is stored when the spring member is fed out) starts rewinding the drum 5, and since the drum has inertia, the spring member 10 causes the drum 5 to perform an appropriate rewinding operation. The tip of the spring member 10 is wound up at a high speed (to prevent sudden unwinding), passes through the square tubular stick 4, and returns to the point where the unwinding detection switch 70 is activated. When the return of the spring member 10 is detected by the 88 return detection switch 70,
The rod of the air cylinder 30 returns to the linear motion state, and the spring member 10 is again clamped between the drive roller 20 and the presser roller 21 which are in the stopped state, thereby preventing the drum 5 from rotating further. Even if the rewind switch 70 or the like fails and the drum 5 continues to rotate in reverse, the stopper protrusion 8 is formed near the end of the drum-side spiral groove 7. The tip of the spring member 10 becomes completely free and does not come off from the drum 5 because it is caught in the narrow gap between the spring member 10 and the presser plate 13.

This facilitates handling of the device.

After detecting the return of the spring member 10 with the switch 70, the stick replacement air cylinder 61 is activated, and the movable stick receiver 55 is removed from the lowest square tubular stick 4 and dropped, and the second square tubular stick from the bottom is moved. Bring the stick 4 to the bottom.

Thereafter, the normal electronic component supply operation is repeated again.

Note that even if an electronic component becomes jammed in the rectangular cylindrical stick 4 or in the idle groove 71, the overload detection section 80 at the tip of the spring member 10 may operate to detect an overload. After the overload is detected, the rewinding air cylinder 30 is operated to perform the rewinding operation of the spring member 10 and to perform the stick replacement operation.

(Effects of the Invention) As explained above, since the electronic component feeding device of the present invention forcibly pushes out the electronic components in the cylindrical stick using the spring member, the electronic components can be delivered regardless of the number of electronic components in the cylindrical stick. The transfer force is constant, and the reliability of the electronic component feeding operation is high (it can also handle high-speed electronic component feeding. Furthermore, there is no need to use gravity to transfer electronic components, and the cylindrical stick can be moved horizontally. In addition, the spring member can be fed out by sandwiching the spring member between a drive roller and a press roller, and the unwinding mechanism is simple, and the drive roller and press roller are arranged in a cylinder. By arranging the spring member near the entrance of the shaped stick, bending of the spring member can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the configuration of the left side of an electronic component supply device according to an embodiment of the present invention, FIG. 2 is a front view showing the configuration of the right side, and FIG. 3 is a front view of the left side of the embodiment. 4 is a left side view of the same, FIG. 5 is a perspective view schematically showing the overall configuration of the embodiment, FIG. 6 is a side sectional view of the component guide portion, and FIG. 7 is an overload detection FIG. 8 is a front sectional view of the component guide portion of the embodiment. 1... Electronic component supply device, 3 A, 3 B... Stick holder 4... Rectangular tubular stick, 5...
Drum, 7... Spiral groove, 8... Stopper convex portion, 1
0... Spring member, 11... Bracket, 12...
Spring, 13... Holder plate, 20... Drive roller 21... Holder roller 25... Electric motor, 3
0.61...Air cylinder, 40...Parts guide, 50...Electronic component, 60...Insertion head, 80...
...Overload detection section.

Claims (3)

[Claims] (1) In an electronic component supply device that holds cylindrical sticks containing a large number of electronic components in a single row in a stacked state, a spring member wound around a drum is sandwiched between a rotationally driven drive roller and a presser roller. An electronic component supply device characterized in that the electronic components in the cylindrical stick are pushed out by the spring member and transferred to a predetermined electronic component delivery position. (2) The electronic component supply device according to claim 1, wherein the spring member is wound up by a mainspring provided on the drum side. (3) A spiral groove for winding up the spring member is formed on the outer peripheral surface of the drum, a stopper convex portion is provided near the end of the spiral groove, and a pressing plate is attached to the drum so as to cross the outer peripheral surface of the drum. 2. The electronic component supply device according to claim 1, wherein the electronic component supply device is provided on the side of the bracket that is pivotally supported.