JPH0787278B2 - Electronic component supply device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component insertion device suitable for supplying odd-shaped electronic components and the like in an electronic component insertion device.

(Summary of the Invention) The present invention is an electronic component supply device suitable for supplying odd-shaped electronic components and the like, and pushes out an electronic component in a cylindrical stick by feeding a spring member between a drive roller and a pressing roller. To improve the reliability of electronic component supply as a structure for transferring to a predetermined electronic component transfer position,
Further, the mechanism for feeding the spring member is simplified.

(Prior Art) Conventionally, from the applicant, an electronic component supply device that holds a component magazine accommodating electronic components at an angle of 45 degrees with respect to a horizontal plane and transfers the electronic components in the component magazine using gravity. Is proposed in Japanese Utility Model No. 62-34524.

(Problems to be Solved by the Invention) By the way, with the conventional structure for transferring the electronic components in the component magazine by utilizing gravity, when the number of the electronic components in the magazine decreases at the time of supplying the components, that much There is a problem that the force for lowering the electronic component becomes weaker, and a mechanism that horizontally changes the posture of the electronic component so that the electronic head supplied in an inclined state with respect to the horizontal plane can be chucked by the insertion head is required. Become.

In view of the above points, the present invention improves the reliability of electronic component supply by providing a spring member into a cylindrical stick that houses a large number of electronic components in a row and forcibly pushing out the electronic components. An object of the present invention is to provide an electronic component supply device that simplifies the mechanism by eliminating the need to change the posture of the electronic component with respect to the insertion head.

(Means for Solving the Problems) In order to achieve the above object, according to the present invention, a cylindrical stick containing a large number of electronic components arranged in one row is held in a multi-stacked state and wound around a drum. In a device for supplying electronic components, the spring member is extended while being sandwiched between a rotationally driven drive roller and a pressing roller, and the electronic component in the tubular stick is pushed out by the spring member and transferred to a predetermined electronic component transfer position. The spiral groove for winding the spring member is formed on the outer peripheral surface of the drum, and a stopper protrusion is provided near the end of the spiral groove. One end of a mainspring that is provided on the supported bracket side and biases the drum in the direction in which the spring member is wound is fixed to a central shaft integrated with the drum. Is fixed to the bracket side, the spring member wound around the drum is pulled out from between the outer peripheral surface of the drum and the pressing plate, and is sandwiched between the drive roller and the pressing roller, and the drive is performed. The spring member is paid out into the tubular stick by rotating the roller, the spring member is released by separating the pressing roller from the drive roller, and the drum is rotated by the force stored in the mainspring. The spring member is wound by a rewinding operation, and when the wound spring member comes into contact with the stopper convex portion, the spring member is caught in a gap between the stopper convex portion and the holding plate to prevent the rewinding operation. Is characterized by.

(Operation) In the electronic component supply device of the present invention, the electronic component in the cylindrical stick is forcibly pushed out by the spring member,
The transfer force of the electronic components is constant regardless of the number of electronic components in the cylindrical stick, and the electronic component supply operation is reliable. In addition, the spring member is a structure that is extended in a state of being sandwiched between a driving roller that is rotationally driven by an electric motor and a pressing roller,
The mechanism for feeding the spring member is simple. further,
It is not necessary to use gravity to transfer the electronic parts, and the cylindrical stick can be placed horizontally. In this case, the posture of the electronic parts (the most advanced one) at the electronic parts transfer position is not changed. The leading-edge electronic component can be chucked by the direct insertion head, and the mechanism around the electronic component transfer position can be simplified. In addition, the winding of the unwound spring member is
By separating the drive roller and the pressing roller and releasing the spring member, the operation can be performed at high speed on the drum side. Further, a spiral groove for winding the spring member is formed on the outer peripheral surface of the drum, and a stopper convex portion is provided near the end of the spiral groove, and a pressing plate is attached to the drum so that the pressing plate traverses the outer peripheral surface in close proximity to each other. Since it is provided on the bracket side which is pivotally supported, when the spring member wound by the rewinding operation of the drum comes into contact with the stopper convex portion located near the end of the spiral groove for winding the spring member of the drum, the stopper convex portion is formed. The rewinding operation can be prevented by being sandwiched in the gap with the pressing plate, and the tip of the spring member does not become completely free and does not come off the drum, and the device can be easily handled.

(Embodiment) An embodiment of an electronic component supply device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a left-side component portion of the electronic component supply device 1,
2 is a front view of the same right component, FIG. 3 is a plan view of the left 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 apparatus 1. 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 in the electronic component supply device 1, and a right stick holder is attached to the right side of the device frame 2 as shown in FIG. 3B is fixed, and a rectangular tube-shaped stick 4 accommodating a large number of electronic components arranged in one row is horizontally arranged between both holders. A component guide 40 is fixed to the right holder 3B.

FIG. 5 is a perspective view showing an overall schematic configuration of the electronic component supplying apparatus 1. Further, the electronic component supplying apparatus 1 chucks the electronic component 50 sent to the component passing position Q and inserts it into the printed circuit board side. An insertion head 60 for performing the operations is shown.

1 to 5, an elongated hole 41 is formed in the device frame 2 in the lateral direction, and a vertical portion of a mounting base 42 is fastened and fixed by a bolt 43 passing through the elongated hole 41. And the mount
The left stick holder 3A is fixed to 42. The position of the left stick holder 3A is adjusted by using the elongated hole 41, and the left and right stick holders 3A and 3B regulate the positions of both ends of the rectangular cylindrical stick 4.

A bracket 11 is fixed to the left end of the mounting base 42, and a spring member 10 (including a flexible member having a spring property such as rubber or resin) formed by winding a wire into a long coil spring is wound. The central shaft 6 of the drum 5 is rotatably supported by the bracket 11. One end of a mainspring (winding spring) 12 is fixed to a central shaft 6 integrated with the drum 5, and the other end of the mainspring 12 wound around the central shaft 6 is fixed to the bracket side. The mainspring 12 biases the drum 5 in a direction in which the spring member 10 is wound up. A spiral groove 7 for winding a spring member is formed on the outer peripheral surface of the drum 5, so that the spring member 10 can be wound in line while being fitted in the spiral groove 7. A stopper protrusion 8 is provided in the vicinity of the end of the spiral groove 7, and in order to prevent derailment of the spring member 10, a pressing plate 13 that is close to and crosses the outer peripheral surface of the drum is fixed to the bracket 11 side. ing. The reason for providing the stopper protrusion 8 will be described later.

As shown in FIG. 3, a drive roller 20 and a pressing roller 21 are arranged on a mounting base 42 in order to feed the spring member 10 into the rectangular cylindrical stick 4. That is, the electric motor
25 and a speed reducer 26 assembled to reduce the number of rotations are attached to the lower side of a mounting base 42, and the drive roller 20 is fixed to a rotary drive shaft 27 of the speed reducer 26.
Further, the reduction gear 26 is adapted to obtain a required braking force when the electric motor 25 is stopped. The pressing roller 21 is pinned on an approximately four semicircular plate 23 pivotally supported by a pin 22 on a mounting base 42.
The semi-circular plate 23 is pivotally attached by 23A, and the substantially semicircular plate 23 is urged by an extension spring 24 in a direction in which the pressing roller 21 is pressed against the drive roller 20 side. Further, an air cylinder 30 for winding a spring member is fixed on the mounting base 42, and the rod of the air cylinder 30 pushes the substantially four semicircular plate 23 at the time of extension and separates the pressing roller 21 from the drive roller 20. Works to The air cylinder 30 is in a contracted state when the spring member 10 is extended, and the spring member 10 pulled out from the drum 5 is driven by the operation of the electric motor 25 while being pressed and nipped by the driving roller 20 and the pressing roller 21. By the rotation of the roller 20, it is paid out in the direction of arrow P.

As shown in FIG. 2, a fixed stick receiver 52 having a support surface 51 for supporting the lower surface of the rectangular tubular stick 4 is fixed to the lower end of the right stick holder 3B. On the other hand, the first
As shown in the figure, a slider 53, which forms a part of the mechanism for stick replacement, is provided slidably in the lateral direction with respect to the mounting base 42, and a movable stick receiver 55 is fixed to the slider 53. Then, in a state in which the movable stick receiver 55 projects inside the left stick holder 3A, the movable stick receiver 55, the fixed stick receiver 52, and the left and right stick holders 3A, 3B are square tubes that accommodate a large number of electronic components in a single-row arrangement The sticks 4 can be horizontally held in a multi-stacked state. Inside the bottom rectangular stick 4,
A spring member 10 formed by winding a wire in the shape of a long coil spring enters from the left end of the rectangular cylindrical stick 4 and pushes out the electronic components 50 arranged in a single row inside.

As a mechanism for stick replacement, an air cylinder 61 for stick replacement fixed to the mounting base 42 side and a slider provided slidably in the lateral direction with respect to the mounting base 42.
62 and a fall prevention claw 63 fixed to the tip of the slider 62.
A connecting lever 65 having an intermediate portion pivotally attached to the mounting base side by a pin 64 and both end portions loosely attached to the sliders 53 and 62; and an extension spring 66 for biasing the connecting lever 65 in the counterclockwise direction. It is provided.

The stick exchange operation is performed by extending the rod of the stick exchange air cylinder 61. That is,
The slider 62 slides to the right by the rod of the air cylinder 61, and the fall prevention claw 63 enters into the second rectangular tubular stick 4 from the bottom, and the slider 53 slides to the left in parallel with this operation. Then, the movable stick receiver 55 retracts. And the fall prevention claw 63 is the second cylindrical stick 4 from the bottom.
, The movable stick receiver 55 is disengaged from the lowermost rectangular cylindrical stick 4, and the lowermost rectangular cylindrical stick 4 falls downward by its own weight. After that, the rod of the air cylinder 61 returns to the contracted state, the connecting lever 65 moves counterclockwise by the action of the extension spring 66, the movable stick receiver 55 advances and the fall prevention pawl 63 retracts, and the second from the bottom. The engagement with the rectangular cylindrical stick 4 is released. As a result, the second rectangular tubular stick 4 from the bottom drops to the lowest position and is horizontally supported by the fixed stick receiver 52 and the movable stick receiver 55.

The rod of the air cylinder 30 for winding the spring member is extended to separate the drive roller 20 and the pressing roller 21 from each other to release the spring member 10, and the mainspring 12 on the drum side.
A rewinding detection switch 70 is provided on the mounting base 42 as shown in FIG. 3 in order to detect that the spring member 10 has slipped out of the rectangular cylindrical stick 4 when the spring member 10 is wound.

The rewinding detection switch 70 constitutes rewinding detection means for the spring member.

As shown in FIGS. 2, 6, and 8, a component guide (chute) 40 having a straight guide groove 71 whose bottom surface is a component sliding surface F is provided on the lower right side of the right stick holder 3B.
Is fixed, and the component guide 40 communicates with the right end opening of the rectangular tubular stick 4 at the bottom. This parts guide
A component retainer 72 for restricting the upper face of the electronic component 50 positioned next to and after the electronic component transfer position Q is fixed to the upper face of 40. A component stopper 74 having a stopper surface 73 is fixed to the tip end of the component guide 40 so that the electronic component 50 that has moved on the component sliding surface F can abut.

At the tip of the spring member 10, an overload detector 80 as shown in FIG. 7 for detecting that the pressing force is a certain value or more.
Is provided. That is, the insulating support member 82 is fitted inside the coil spring portion of the spring member 10, and the movable contact shaft 83 is attached through the insulating support member 82.
The movable contact shaft 83 is biased in the protruding direction by a compression spring 84 provided in the insulating support member 82, and an insulating head 85 is fixed to the tip of the movable contact shaft 83. The insulating support member 82 has a pair of fixed contacts 86 facing the end of the movable contact shaft 83.
A and 86B are arranged. In addition, 81 is an insulating tube, 87
Is a connection lead wire.

The overload detection unit 80 as described above detects that the electronic component 50 is clogged in the rectangular tubular stick 4 or in the middle of the component guide 40, or that the electronic component 50 has disappeared from the rectangular tubular stick 4 and the component guide 40. Is pressed against the force of the compression spring 84 and both fixed contacts 86A and 86B are short-circuited at the end of the movable contact shaft 83 for detection.

As shown in FIGS. 2 and 8, a tip component detection switch 90 is fixed to the tip side of the component guide 40, and the detection roller 91 of the switch 90 is positioned higher than the component stopper 74, and the electronic component 50. It is set so as to be pushed at the height of, but not pushed at the tip 85 of the spring member 10. Therefore, the detection roller 91 of the switch 90 is pressed when the leading edge electronic component 50 is located at the electronic component passing position Q as shown in FIG. 2 to detect the presence of the electronic component. As shown in FIG. 8, the roller 91 is not pressed and the absence of electronic components is detected.

Next, the overall operation of the electronic component supply device 1 will be described.
Place the rectangular cylindrical sticks 4 horizontally between the left and right stick holders 3A and 3B in a multi-stacked state, and fix the fixed stick
Support it with 52 and movable stick receiver 55. Then, the spring member 10 wound around the drum 5 is pulled out from between the outer peripheral surface of the drum and the pressing plate 13 to be sandwiched by the drive roller 20 and the pressing roller 21 in pressure contact with this.

Electric motor with reduction gear when electronic parts 50 are ordered to be supplied
25 is operated to rotate the drive roller 20 by a predetermined amount, and the spring member 10 is extended for a predetermined length in the lowermost rectangular stick 4, and the electronic components 50 housed in the rectangular stick 4 in one row are forced. Push out. As a result, the most advanced electronic component 50 reaches the electronic component transfer position Q at the tip of the linear guide groove 71 of the component guide 40. When the electronic component 50 comes into contact with the stopper surface 73 and stops as shown in FIG.
The detection roller 91 is pushed, the switch 90 detects the presence of an electronic component, stops the electric motor 25, and at the same time permits the chucking of the electronic component at the position Q by the insertion head 60 of FIG. Is chucked by the insertion head 60 and inserted into the printed circuit board.

Since the electronic component delivery position Q becomes vacant due to the electronic component taking-out operation of the insertion head 60, the electric motor 25 is operated again and the spring member 10 is paid out to transfer the electronic component to the position Q.
Such an operation is repeatedly executed until the electronic components in the lowermost rectangular tubular stick 4 and the component guide 40 are exhausted.

After the last electronic component is taken out by the insertion head 60, when the electric motor 25 unwinds the spring member 10, there are no electronic components,
The tip part detection switch 90 continues to detect the absence of electronic parts in the state shown in FIG. As a result, the spring member 10 by the electric motor 25 is
7 continues, and the head portion 85 of the overload detection portion 80 of FIG. 7 hits the stopper surface 73 and is strongly pressed. As a result, the pair of fixed contacts 86A and 86B of the overload detection unit 80 are short-circuited and the overload state is detected. Upon detection of this overload, the electric motor 25 is stopped, the rod of the rewinding air cylinder 30 is extended, the substantially semicircular plate 23 is rotated, and the pressing roller 21 is separated from the drive roller 20 to separate the spring member. Release 10 Therefore, the rewinding operation of the drum 5 by the mainspring 12 on the drum 5 side (the rewinding force is stored when the spring member is being fed out) is started, and the spring member 10 has an inertia in the drum, so that the drum 5 has an appropriate amount. The spring member is wound up at a speed (prevents rapid rewinding), passes through the rectangular tubular stick 4, and activates the rewinding detection switch 70.
The tip of 10 returns. Rewind detection switch 70 is used for spring member 10
When the return of the air cylinder 30 is detected, the rod of the air cylinder 30 returns to the contracted state, and the driving roller 20 and the pressing roller 21 in the stopped state again clamp the spring member 10 to prevent the drum 5 from further rotating in the reverse direction. . Even if the rewinding switch 70 or the like fails and the reverse rotation of the drum 5 continues, the stopper protrusion 8 is formed near the end of the spiral groove 7 on the drum side. The tip of the spring member 10 is completely free from being caught in the narrow gap between the pressing plate 13 and the pressing plate 13 and does not come off from the drum 5. This facilitates handling of the device.

In addition, after detecting the return of the spring member 10 with the switch 70, the stick replacement air cylinder 61 is operated to remove the movable stick receiver 55 from the lowermost rectangular tubular stick 4 and drop it. Bring the stick 4 to the bottom. After that, the normal electronic component supply operation is repeated again.

It should be noted that there is a case in which the overload detection unit 80 at the tip of the spring member 10 is activated to detect overload even when the electronic component is clogged in the rectangular tubular stick 4 or in the guide groove 71. Air cylinder 30 for rewinding after overload detection
Is operated to execute the rewinding operation of the spring member 10 and the stick exchanging operation.

(Effects of the Invention) As described above, the electronic component supply device of the present invention forcibly pushes out the electronic component in the cylindrical stick by the spring member, so that the electronic component is irrespective of the number of electronic components in the cylindrical stick. , The reliability of the electronic component supply operation is high, it can face the high speed of electronic component supply, and it is not necessary to use gravity to transfer the electronic components. Can be Further, the spring member can be fed out by sandwiching the spring member between the driving roller and the pressing roller. Further, the winding of the unwound spring member is performed by separating the driving roller and the pressing roller to release the spring member,
It can be executed at high speed on the drum side. In addition, a spiral groove for winding a spring member is formed on the outer peripheral surface of the drum, and a stopper protrusion is provided near the end of the spiral groove, and a pressing plate is attached to the drum so that the pressing plate traverses the outer peripheral surface in close proximity to and crosses the outer peripheral surface. Since it is provided on the bracket side which is pivotally supported, when the spring member wound by the rewinding operation of the drum comes into contact with the stopper convex portion located near the end of the spiral groove for winding the spring member of the drum, the stopper convex portion is formed. The rewinding operation can be prevented by being sandwiched in the gap with the pressing plate, and the tip of the spring member does not become completely free and does not come off the drum, and the device can be easily handled. Further, by disposing the driving roller and the pressing roller near the entrance of the cylindrical stick, the bending of the spring member can be prevented.

[Brief description of drawings]

1 is a front view showing the configuration of the left side portion of an embodiment of an electronic component supply apparatus according to the present invention, FIG. 2 is a front view showing the configuration of the right side portion thereof, and FIG. 3 is the left side portion of the embodiment FIG. 4 is a left side view of the same, FIG. 5 is a perspective view showing the outline of the overall structure of the embodiment, FIG. 6 is a side sectional view of a parts guide part, and FIG. FIG. 8 is a front sectional view of a part guide portion of the embodiment. 1 ... Electronic component supply device, 3A, 3B ... Stick holder,
4 ... Square cylindrical stick, 5 ... Drum, 7 ... Spiral groove, 8 ...
Stopper protrusion, 10 ... Spring member, 11 ... Bracket, 12 ...
Mainspring, 13 ... Pressing plate, 20 ... Drive roller, 21 ... Pressing roller, 25 ... Electric motor, 30,61 ... Air cylinder, 40
… Parts guide, 50… Electronic parts, 60… Inserting head, 80… Overload detector.

Claims (3)

[Claims] 1. A cylindrical stick containing a large number of electronic components arranged in a row is held in a multi-tiered state, and a spring member wound around a drum is sandwiched between a rotationally driven drive roller and a pressing roller. In an electronic component supply device that feeds out and pushes the electronic component in the cylindrical stick by the spring member to transfer it to a predetermined electronic component delivery position, forming the spring member winding spiral groove on the outer peripheral surface of the drum, A stopper protrusion is provided in the vicinity of the end of the spiral groove, and a pressing plate is provided on the bracket side that pivotally supports the drum so as to traverse the outer peripheral surface in close proximity to each other, and the drum is attached so as to wind the spring member. One end of the mainspring that urges is fixed to a central shaft integrated with the drum, and the other end of the mainspring is fixed to the bracket side. The mainspring is wound around the drum. The spring member is pulled out from between the outer peripheral surface of the drum and the pressing plate and is sandwiched by the driving roller and the pressing roller, and the driving roller is rotated to extend the spring member into the cylindrical stick. The spring member is released by separating the pressing roller from the drive roller, and the spring member is wound by the rewinding operation of the drum by the force stored in the mainspring, and the wound member is wound. When the spring member comes into contact with the stopper protrusion, the spring member is caught in the gap between the stopper protrusion and the pressing plate to prevent the rewinding operation. 2. Rewinding detection means for the spring member is provided,
The electronic component supply device according to claim 1, wherein when the rewinding detection means detects rewinding of the spring member, the rotation of the drum in the rewinding direction is stopped. 3. An overload detector for detecting a pressing force above a certain value is provided at the tip of the spring member, and when the overload detector detects an overload state, the pressing roller is separated from the drive roller. 1. The electronic component supply device according to 1.