JP2860634B2 - Electronic component transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic insertion device for inserting an electronic component having a lead wire into a printed circuit board.
The present invention relates to an electronic component transfer device for holding an electronic component serial cut piece obtained by cutting and separating an electronic component sequence on a pallet and transferring the electronic component sequence to a chuck for holding the electronic component.

[0002]

2. Description of the Related Art Conventionally, as this kind of electronic component transfer apparatus, there is one disclosed in Japanese Patent Publication No. Hei 3-58979 or Japanese Utility Model Publication No. Hei 2-15359 proposed by the present applicant. The pallet is provided, and an electronic component continuous cut piece separated so as to have one electronic component from the electronic component chain is supplied to the pallet from the supply unit, and is transferred to the chuck by traveling in a horizontal plane of the pallet. In Japanese Patent Publication No. 3-58979, the pallet receives the electronic component continuous cutting pieces from the supply unit in a horizontal state parallel to the traveling direction from the supply unit at the component holding unit that is rotatable in a horizontal plane. In the arc-shaped running portion, the component holding portion holding the electronic component continuous cut pieces is rotated by 90 degrees, and the electronic component continuous cut pieces are taken out by the chuck. At this time, the component holding portion holding the electronic component continuous cutting piece is rotated by 90 degrees by a mechanism using a cam and a slide bar in the arc-shaped traveling portion. Further, in the mechanism disclosed in Japanese Utility Model Publication No. 2-15359, the pallet has a component holding portion for holding the continuous cut pieces of electronic components in an upright state, and the cam is arranged along the arc-shaped traveling portion of the pallet. As the pallet travels, the roller provided on the component holding portion abuts on the cam to convert the component holding portion from a posture perpendicular to the running direction to a horizontal direction and lock it with a latch. This is a mechanism in which a continuous piece of parts is taken out by a chuck, and then the latch that has locked the component holding part is released and returned to a direction perpendicular to the running direction.

[0003]

By the way, the pallet component holding posture according to the conventional Japanese Patent Publication No. 3-58979 is changed to 9
The mechanism for converting to 0 degrees is provided with a slider provided at one end with a hook that engages with a slide bar provided on the pallet, radially provided on the sprocket, and the pallet on the endless belt mechanism moves along the sprocket of the arc-shaped running part As a result, a cam follower provided at the other end of the slider having a hook engaged with the pallet-side slide bar at one end is restrained by a cam provided at the center of the arc-shaped traveling portion, so that the slide bar becomes radial. They come and go. For this reason, the configuration of the machine is very complicated, and there is a problem that the maintenance is troublesome and the manufacturing cost is increased. Furthermore, since each pallet is provided with a slide bar that slides when the component holding part is rotated by 90 degrees, the pallet body needs grooves for sliding and guiding the slide bar, and these processes require precision. Cost is required. A large number of pallets are required in one electronic component transfer device, and the complicated pallet structure causes a problem that the cost of the entire device increases.

In the pallet component holding posture changing mechanism disclosed in Japanese Utility Model Publication No. 2-15359, the roller of the component holding portion abuts on a cam disposed along an arcuate running portion as the pallet travels. The direction of the component holding unit is changed, and after the delivery, the latch is released, and the component holding unit is returned to the original posture. However, since the cam has a complicated curve, processing cost is increased, and the latch mechanism is attached to the pallet. The cost increase in this area poses a problem.

[0005] A first object of the present invention is to solve the above problems,
The holding posture of the electronic component continuous cutting pieces held by the pallet is 9
It is an object of the present invention to provide an electronic component transfer device that simplifies the structure and reduces the cost by devising a mechanism part that converts the angle to 0 degrees.

A second object of the present invention is to allow the continuous cutting of electronic parts to be reliably transferred to the delivery position for the chuck, and to smoothly and reliably transfer the continuous cutting parts to the chuck at the delivery position. An electronic component transfer device is provided.

[0007] Other objects and novel features of the present invention will become apparent in embodiments described later.

[0008]

In order to achieve the above object, the present invention provides an endless belt mechanism that runs intermittently and is provided with a plurality of pallets, and a series of electronic components is cut so as to have one electronic component with a lead wire. In the electronic component transfer apparatus for holding and transferring the continuous cut pieces of electronic parts with the pallet, the pallet includes: a component holding unit that holds the continuous cut pieces of electronic components; and a position conversion unit attached to the component holding unit. A contact member for the electronic component, wherein the component holding portion is a first component in which a lead wire of the electronic component of the electronic component continuous cutting piece is parallel to the pallet traveling direction.
Is biased so as to be rotatable 90 degrees between a second position and a second position perpendicular to the first position and to return to the first position,
An intermediate position of the arc-shaped traveling portion in which the endless belt mechanism travels in an arc shape is a delivery position of the continuous cut piece of the electronic component, and is located along the arc-shaped traveling portion in front of the delivery position and has the position conversion device. The component holding part is brought into contact with the contact member and
A first turning guide portion for turning from the second position to the second position, and the component holding member which is in contact with the position conversion contact member along the arc-shaped traveling portion rearward from the delivery position. And a second turning guide portion for turning the portion back to the first position.

Further, a pressing means may be provided for pressing the component holding portion of the pallet stopped at the delivery position to the second position for positioning.

[0010] A push-down means for pushing down the pallet stopped at the delivery position to remove the pallet from floating from the running surface may be provided.

[0011] A lead wire position correcting means may be provided for correcting the horizontal position of the lead wire of the electronic component with respect to the chuck of the continuous cut piece of the electronic component held by the pallet stopped at the delivery position.

[0012] A pallet guide for restricting rotation of the component holding portion along a straight running portion of the endless belt mechanism may be provided.

[0013]

In the electronic component transfer device according to the present invention, the electronic component continuous cutting piece separated so as to have one electronic component from the electronic component chain from the supply portion in the linear traveling portion where the pallet travels linearly is transferred to the component holding portion of the pallet. Supply. The pallet is driven and driven in a horizontal plane by an endless belt mechanism.
The electronic component lead wire is received from the supply unit in a horizontal state parallel to the traveling direction, and the electronic component continuous cut piece is received. In the arc-shaped traveling portion, the component holding unit holding the electronic component continuous cut piece is rotated by 90 degrees by the turning unit. In this configuration, the electronic component continuous cut pieces are taken out by the chuck at the delivery position. At this time, the first turning guide portion of the turning portion that sequentially pushes the contact member of the component holding portion of the pallet according to the arc-shaped traveling, and the turning that gradually returns the contact member of the component holding portion to the original position. The second turning guide section of the section can be configured with a simple circumference, and for example, accuracy can be easily secured by lathe processing, and processing cost is not required.

Further, the contact member of the component holding portion is sequentially pushed by the first turning guide portion of the turning portion in accordance with the arc-shaped traveling to rotate the component holding portion by 90 degrees, and after the arrival at the delivery position, the turning is continued. A second swivel guide following the first swivel guide of the unit (may be an extension of the first swivel guide)
Can be rotated back to the original state, so that the pallet has a simple configuration that does not require a latch and an external latch release mechanism.

[0015] Further, since the associated mechanism for rotating the component holding portion of the pallet is greatly simplified as compared with the prior art, the processing cost and the assembly cost can be reduced. The cost reduction effect is enormous because a large number are used for one electronic component transfer device,
Due to the simplification of the mechanism, the durability accompanying the repetitive operation is improved, and the maintainability is also improved.

In the case where a pressing means for pressing and positioning the component holding portion of the pallet stopped at the delivery position to the second position is provided, the component holding portion is securely moved to the second position at the delivery position. , And the operation of holding the chuck of the electronic component continuous cut piece by the chuck waiting at the delivery position can reliably execute the lead wire holding (nipping) of the electronic component.

In the case where a press-down means for pressing down the pallet stopped at the delivery position to remove the lift of the pallet is provided, the vertical direction caused by the pallet lift of the lead wire of the continuous cut piece of the electronic component held by the component holding portion is provided. Misalignment can be prevented.

In the case where a lead wire position correcting means for correcting a horizontal position of a lead wire of the electronic component with respect to the chuck of the electronic component continuous cut piece held by the pallet stopped at the delivery position is provided, the lead of the electronic component is provided. The displacement of the line can be corrected so that the line can be reliably held by the chuck.

In the case where a pallet guide for restricting the rotation of the component holding portion is provided along the straight running portion of the endless belt mechanism, the means for urging the component holding portion to return to the first position is damaged. Even if the component holding unit is in a free state, the component holding unit can be restricted to a position substantially close to the first position by the pallet guide, and the component holding unit may interfere with various devices along the pallet traveling route. Sex can be eliminated.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electronic component transfer apparatus according to an embodiment of the present invention.

FIG. 1 shows a pallet for transferring a continuous piece of electronic parts cut in such a manner that the series of electronic parts has one electronic part with a lead wire in the embodiment, and the continuous part of electronic parts held by the pallet. FIG. 2 is a plan view showing a mechanism for changing a posture, FIG. 2 is a schematic plan view showing the entire configuration of an embodiment in which an electronic component transfer device is incorporated in an automatic insertion device, and FIG. FIG. 4 is a cross-sectional side view partially showing a mechanism for preventing the pallet from being lifted at the delivery position of the continuous cut piece of electronic parts and a mechanical part for correcting the position of the lead wire with respect to the chuck of the continuous cut piece for electronic part. FIG. 5 is a front view showing a mechanism for correcting the position of the lead wire of the continuous cut piece of the electronic component with respect to the chuck, FIG. 6 is a plan view of a straight traveling portion of the pallet,
FIG. 7 is a sectional side view of the same.

In the overall configuration shown in FIGS. 2 and 3, the electronic component transfer device 1 has an endless belt mechanism for an intermittent running operation in which a chain 3 as an endless belt is stretched between sprockets 2A to 2D. Pallets 4 are fixed at equal intervals. The endless belt mechanism runs in a horizontal plane, and each pallet 4 has an electronic component chain formed by arranging electronic components with lead wires on a holding band so as to have one electronic component. The piece is held horizontally.

Supply units 5 are arranged at equal intervals along the straight running portion of the chain, ie, the straight running portion of the pallet 4 and the pallet 4, and each supply unit 5 rotates a reel around which a series of electronic components are wound. A series of electronic components 7 drawn out of the package 6 accommodated as possible are connected. In this case, the packages 6 are also arranged at the same interval as the supply unit 5, and the series of electronic components 7 drawn out of the package 6 are drawn out to the supply unit 5 without any twist or the like. At this time, the lead-out length of the electronic component chain 7 is the same for each package 6.

The automatic insertion device includes, in addition to the electronic component transfer device 1, a chuck 10 for holding the lead wires of the electronic components of the continuous cut pieces of electronic components transferred by the electronic component transfer device 1, and a rotary disk provided with the chucks 10 at equal intervals. 11 and an insertion guide 13 for inserting lead wires of electronic components carried by the chuck 10 into a printed circuit board on an XY table 12. The delivery of the continuous cut pieces of electronic components from the pallet 4 to the chuck 10 is performed at a delivery position P along the sprocket 2C in FIG.

The details of the pallet 4 in the electronic component transfer device are shown in FIGS. In these figures,
The pallet 4 is fixed to the chain 3 at the pallet main body 20, and the component holding part 22 is rotated in the horizontal plane by the pin 23 on the extension base part 21 protruding to the side of the horizontally supported pallet main body 20. It is freely pivoted. A holding claw 24 is rotatably attached to the component holding portion 22 with a pin 31. The holding claw 24 is pressed against a component mounting surface 22A of the component holding portion 22 by a spring 25 provided around the pin 31. You are being biased to. Here, as shown in FIG. 9, the holding claw 24 is attached to the component holding part 22 so as to be inclined from the component receiving side of the component mounting surface 22A toward the component take-out side.

A pulley 26 having a spring guide groove 26A is pivotally supported around a pin 23 serving as a rotation fulcrum of the component holding portion 22, and a spring pin 27 fixed to the pallet main body 20 and a component holding portion. A tension spring 29 is attached to a spring pin 28 fixed to the portion 22 side, and is wound around the spring guide groove 26A about half a circumference. Further, a position conversion roller 30 as a position conversion contact member is rotatably attached to the upper surface of the component holding unit 22 with a bolt (or pin) 33. Accordingly, as long as no external force acts on the position converting roller 30, the component holding portion 22 rotates clockwise in FIG. 8 by the force of the tension spring 29, and the first contact surface of the component holding portion 22 (the component take-out side). The first position shown by the solid line in FIG. 8 where the side surface 22B is in contact with the first stopper surface 21A which is the distal end surface of the extension base portion 21 (when the pallet travels straight and there is no transfer position P) Position when traveling on an arc-shaped traveling portion). Here, the first stopper surface 2
1A is a plane parallel to the pallet traveling direction, and a plane that can also contact the first contact surface 22B on the component holding unit 2 side. At the first position, the pallet traveling direction is parallel to the longitudinal direction of the component holder 22, and the pin 31 to which the holding claw 24 is attached is also parallel to the pallet traveling direction.

On the other hand, by applying an external force to the position converting roller 30, the second contact surface 22C, which is the base end surface of the component holding portion 22 on the side closer to the roller 30, is moved to the pallet main body 2.
The second stopper surface 20A can be rotated by 90 degrees and brought into contact with the second stopper surface 20A. This state is indicated by a virtual line in FIG. 8, and this is the second position (the delivery position P) of the component holder 22.
In this case, the pallet traveling direction and the longitudinal direction of the component holding unit 22 are orthogonal to each other, and the pin 31 to which the holding claws 24 are attached is also orthogonal to the pallet traveling direction. Here, the second stopper surface 20
A is a plane parallel to the pallet traveling direction, and the second contact surface 22C on the component holder 2 side is a plane orthogonal to the first contact surface 22B.

As shown in FIGS. 6 and 7, in the straight running portion of the pallet 4, the chain 3 runs in the chain guide groove 42 in the support rail 41 fixed on the base 40. A resin floor plate 2 of a seat which is fixed (layed) under the pallet body 20 so as to be slippery.
The lower surface of OB slides with the upper end surface of the support rail 41 as a running surface.

In the straight running portion, no external force is applied to the position converting roller 30, and the component holding portion 22 is urged by the tension spring 29, so that the first contact surface of the component holding portion 22 is pressed. 22B is the first stopper surface 2
1A, that is, a state where the longitudinal direction of the component holding portion 22 is parallel to the pallet main body 20. In this state, the electronic component chain 7 in which the electronic components 80 with leads are arranged and fixed at equal intervals on the holding band 81 shown in FIG.
Is cut by the dashed-dotted line A so as to have one electronic component 80 and is supplied to the component holding unit 22 as the electronic component continuous cutting piece 50 by the supply unit 5 shown in FIGS. 2 and 3. Is done. At this time, the component mounting surface 22A of the component holding unit 22
The electronic component continuous cutting piece 50 is inserted from above the component receiving side. In a state where the electronic component continuous cutting piece 50 is held by the component mounting surface 22A of the component holding unit 22 and the holding claw 24, the holding claw 24 is inclined from the component receiving side of the component mounting surface 22A toward the component removal side. Therefore, the electronic component continuous cutting piece 50 is configured to be easily inserted into the moving direction of the electronic component continuous cutting piece 50 and hard to be removed in the reverse direction. As shown in FIG. 6, the lead wire 80A of the electronic component 80 of the electronic component continuous cutting piece 50 pressed and held on the component mounting surface 22A is
Is parallel to the traveling direction.

The pallet 4 is in the state shown in FIGS. 6 and 7 when traveling straight, but when the chuck 10 waiting at the delivery position P travels in an arc shape along the sprocket 2C which is in close proximity. As shown in FIG. 1, the component holding portion 22 of the pallet 4 is rotated so that the component holding portion 22 is rotated exactly 90 degrees at the component delivery position P, so that the chuck 10 at the delivery position P disconnects the electronic components continuously. The electronic component 80 of the piece 50 is in a state in which the lead wire 80A can be pinched. The mechanism for this is shown in FIGS. 1, 4 and 5.

As shown in FIG. 1, a swiveling portion 60 is provided in a substantially 180-degree range along an arc-shaped traveling portion where the pallet 4 travels along the sprocket 2C. That is, the turning portion 60 is fixed with the bolt 66 below the mounting portion 76 that is fixed upright on the base side. This turning part 6
0 is the position on the pallet side in a section from the position where the sprocket rotation angle is 0 degree on the pallet receiving side to the delivery position P where the rotation angle is 90 degrees on the pallet receiving side where the straight traveling portion ends and enters the arc-shaped traveling portion. A first turning guide that contacts the conversion roller 30 and rotates the component holding unit 22 from a first position (solid line state in FIG. 8) to a second position (virtual line state in FIG. 8). A portion 61 and the position conversion roller 30 in a section from the delivery position P to a position at a rotation angle of 180 degrees on the pallet sending side where the arc-shaped traveling portion ends and enters the straight traveling portion, and A second operation of rotating the component holding unit 22 in a direction of returning the component holding unit 22 to the first position;
And the turning guide part 62 are integrally provided. FIG.
Here, the pallet 4 is partially omitted for illustration.

The first and second turning guide portions 6
As shown in FIGS. 1 and 9, the guides 1 and 62 have guide arc surfaces 61 </ b> A and 62 </ b> A that contact the position conversion roller 30. In the present embodiment, the guide arc surfaces 61A and 62A are formed by arcs having the same curvature over approximately 180 degrees, and the center C2 of the arc is a straight line connecting the delivery position P and the center of rotation of the sprocket, that is, the center C1 of the arc-shaped traveling path of the pallet. It is located on an extension. That is, from the delivery position P,
The center C2 of each of the guide arc surfaces 61A, 62A is offset by a distance L in a direction away from the center C1 of the arc-shaped travel route. Here, the radius R of the guide arc surfaces 61A and 62A is slightly smaller than the radius of the movement locus of the position conversion roller outer surface when the pallet 4 travels in an arc shape with the component holding unit 22 at the first position. Is set to large. On the pallet receiving side of the guide arc surface 61A, the roller 30 for initial position conversion is set so as not to come into contact with the pallet, and the guide arc surface 61A is set to abut on the roller 30 at a position rotated slightly toward the delivery position P. Therefore, the displacement amount, that is, the rotation amount of the component holding unit 22 increases as approaching the delivery position P, and the component holding unit 22 is brought closer to the second position.

Further, guide arc surfaces 61A and 62A are partially notched in a portion corresponding to the transfer position P of the turning portion 60, and a pressing lever 63 as a pressing means is provided with a pin 64 in the notched portion. Is pivoted to. The tip of the pressing lever 63 is urged toward the center of the arc-shaped travel path by a tension spring 65, and the pressing lever 63 contacts the pallet-side position conversion roller 30 approaching the delivery position P with a pressing surface 63A. The position conversion roller 30 arriving at the delivery position P is pressed by the pressing surface 63A, and the component holding unit 22 is reliably rotated to the second position for positioning. In this state, the longitudinal direction of the component holder 22 is orthogonal to the pallet traveling direction, and the lead wire 80A of the electronic component 80 of the electronic component continuous cutting piece 50 is perpendicular to the pallet traveling direction.

In the vicinity of the delivery position P where the pressing lever 63 is provided, the guide circular arc surfaces 62A and 62B are
3A, the pressing lever 63
The roller 30 for position conversion that has passed through the guide arc surface 62
A comes into contact with A.

When the position converting roller 30 on the pallet comes into contact with the guide arc surface 62A, the guide arc surface 62A gradually reduces the amount of displacement of the roller 30 toward the pallet sending side where the rotation angle becomes 180 degrees. The amount of rotation of the component holder 22 with respect to the first position is reduced so that the component holder 22 is separated from the roller 30 at a position slightly before the sending point at the sprocket rotation angle of 180 degrees. Then, at the position where the rotation angle of the arc-shaped traveling portion is 180 degrees, the roller 30 moves away from the guide arc surface 62A, that is, moves to straight traveling in a state where the component holding portion 22 returns to the first position. .

As shown in FIG. 4, the lower surface of the resin floor plate 20B under the pallet body 20 of the pallet 4 is also supported by the support rail 51 (sprocket 2) even in the arc-shaped traveling portion.
C has a slightly different structure from the support rail 41 so as to engage with the chain 3), and is slidably supported at the same height as the support rail 41 with the upper end surface of the support rail 51 as a running surface. Further, a push-down mechanism 75 serving as a push-down means for removing the pallet 4 from being lifted at the delivery position P is provided on the horizontal support frame 70 which is erected and fixed to the base. That is, the push-down mechanism 75 includes the upper and lower rods 72 that are attached to the mounting portion 76 fixed to the horizontal support frame 70 so as to protrude (move) downward without falling off, and the compression spring 71 that urges the lower portion.
And a roller 73 pivotally attached to the lower end of the upper and lower rods 72 by a pin 74. The roller 73 presses the upper surface of the pallet main body 20 so that the transfer position P The lifting of the pallet 4 from the running surface (the upper end surface of the support rail 51) is prevented, and the pallet 4 is positioned in the vertical direction.

As shown in FIGS. 4 and 5, the electronic component continuous cutting piece 50 held by the pallet 4 stopped at the delivery position P
In order to correct the horizontal position of the lead wire 80A of the electronic component 80 with respect to the chuck 10, the lead position correcting mechanism 90 is provided on the horizontal support frame 70 as a lead position correcting means. . The lead wire position correcting mechanism 90 includes a vertical slider 91 slidable in the vertical direction with respect to the distal end surface 70A of the horizontal support frame 70.
A lifting member 92 fixed to the upper and lower sliders 91;
A fixing claw 93 fixed to the elevating member 92;
A movable claw 95 pivotally attached to the rear side of the movable claw 95 by a pin 94 and a tension spring 96 for urging the movable claw 95 against the fixed claw 93 in a closing direction are provided. Further, in order to drive the elevating member 92 up and down, a bell crank 98 is pivotally supported by a bracket 97 on the horizontal support frame 70, and the bell crank 9
8 and a lifting member 92 are connected to a connecting rod (link) 99.
And receives a driving force for raising and lowering the elevating member 92 from a driving rod 100 connected to the other end of the bell crank 98. The movable claw driving cam 101 is moved along the side of the elevating member
The movable pawl driving cam 1
01 comes into contact with a roller 102 as a cam follower pivotally attached to the upper end of the movable claw 95. Accordingly, the movable claw driving cam 10 is in the raised position of the lifting member 92.
1, the movable claw 95 is forcibly opened (the state indicated by the phantom line F in FIG. 5), but when the elevating member 92 is at the lowered position, the movable claw 95 can be closed with respect to the fixed claw 93. However, if there is no electronic component 80, it can be closed to the state of the virtual line G in FIG.
As shown by the solid line in FIG.
Stops at 0A. In addition, as shown in FIG.
There is a gap between the movable claw 95 and the movable claw 95 in the front-rear direction, and the chuck 10 enters the gap as shown by an imaginary line.

The lead wire position correcting mechanism 90 corrects the lead wire position by using the chuck 1 which has been waiting at the delivery position P.
It is performed in cooperation with 0. When the pallet 4 is running, the elevating member 92 is raised to a raised position so as not to hinder the transfer of the electronic component continuous cutting pieces 50 by the pallet 4.
The chuck 10 is also waiting at the slightly lowered position.
When the pallet 4 stops at the delivery position P, the drive rod 10
The bell crank 98 rotates counterclockwise with the movement of the arrow D in the direction of 0, and the elevating member 92 is driven downward via the connecting rod 99. As a result, the electronic component 80 of the electronic component continuous cut piece 50 held by the pallet 4 stopped at the delivery position P
The lateral position of the lead wire 80A is regulated by the side edge 93A of the fixed claw 93 and the side edge 95A of the movable claw 95 urged in the closing direction by the elastic force of the spring.
The height position is regulated by the upper edge 93B. At the same time or immediately after this, the chuck 10 moves up and enters the front and rear gap between the fixed claw 93 and the movable claw 95. As a result, the lead wire 80A of the electronic component 80 at the delivery position P is sandwiched between the fixed claw 93 and the movable claw 95 of the lead wire position correcting mechanism 90 from above, and one of the lead wires abuts on the fixed claw 93 to be horizontal. The position is corrected in the direction, and after the chuck 10 is raised from below, the lead wire is sandwiched. After the lifting member 92 returns to the raised position, the chuck 10 is connected to the lead wire 8 of the electronic component 80.
While holding (holding) 0A, it moves in the direction of arrow E in FIG. 1 and takes out the electronic component continuous cutting piece 50 from the component holding unit 22 (pulls out to the component take-out side of the component holding unit 22). .

In the straight running portion of the pallet 4, no external force is applied to the position converting roller 30.
The component holder 22 is urged by a tension spring 29,
The first contact surface 22B of the component holder 22 should be kept in contact with the first stopper surface 21A, that is, the longitudinal direction of the component holder 22 should be kept parallel to the pallet body 20. When the extension spring 29 is cut, the degree of freedom of rotation is generated in the component holding portion 22, so that the pallet 4 may interfere with various devices along the traveling route during traveling. Therefore, as shown in FIGS. 6 and 7, the pallet guide 11 for restricting the rotation of the component holding portion 22 along the straight running portion of the chain 3 and the pallet 4 of the endless belt mechanism.
0 is fixed on a fixed block 111 integrated with the side surface of the support rail 41. As a result, even if the tension spring 29, which is a means for urging the component holding portion 22 to return to the first position, is broken and the component holding portion 22 is in a free state, the pallet guide 110 is kept in the component holding portion 2 position.
By opposing the lower side surface (flat surface) 112 of the second member 2 at a small interval, the component holding portion 22 can be regulated by the pallet guide 110 to an attitude substantially close to the first position.
Risk of interference with various devices along the pallet travel route can be eliminated.

Next, the overall operation of this embodiment will be described.

The pallet 4 performs an intermittent running operation by the intermittent rotation of the sprockets 2A to 2D shown in FIG. When the pallet 4 is located at a position facing the supply unit 5, a series of electronic components 7 of a predetermined type is selected and cut by the supply unit 5, and as shown in FIG. Is transferred to the component holding part 22 at the position of. In this case, the supply sequence of the electronic component strings 7 is such that the electronic component string pieces 50 are arranged on the pallet 4 in the order of insertion into the printed circuit board. Electronic parts continuous cutting piece 50
Is mounted on the component mounting surface 22A of the component holding portion 22 at the first position where the longitudinal direction is parallel to the pallet traveling direction with the lead wire 80A of the electronic component 80 parallel to the pallet traveling direction. It is pressed and held by the holding claws 24. The pallet 4 holding the continuous cut pieces of electronic components 50 is
It moves in the direction of the sprocket 2C where 0 is located.
In this normal movement, as shown by the solid line in FIG.
2 is maintained at a first position where the first contact surface 22B is in contact with the first stopper surface 21A on the pallet extension base side by the action of the tension spring 29 provided on the pallet 4.

When the pallet 4 reaches the arc-shaped traveling path of the sprocket 2C, the position converting roller 30 does not initially contact the first turning guide portion 61 in the first half of the turning portion 60, but the pallet 4 contacts the sprocket 2C. When the vehicle travels along an arc along the position, the position converting roller 30 comes into contact with the guide arc surface 61A inside the turning guide portion 61, and the component holding portion 22 to which the position converting roller 30 is pivotally attached. Also starts rotating gradually against the force of the tension spring 29, and before the rotation angle approaches 90 degrees and the pressing surface 63A of the pressing lever 63 is switched to the position conversion roller 30, the component holding portion 22 is in the second position. After the vehicle has come very close to the position, and has further changed over to the pressing surface 63A, the position conversion roller 30 is moved by the pressing surface 63A toward the center of rotation of the sprocket 2C. In pressed, the second stopper surface 20 second abutment surface 22C is pallet body side of the component holder 22 as rotational angle of 90 degrees transfer position P in FIG. 8 phantom lines
The component holding portion 22 is forcibly positioned so as to be at the second position abutting on A.

With respect to the continuous cut piece 50 held by the pallet 4 stopped at the delivery position P, the fixed claw 93 and the movable claw 95 of the lead wire position correcting mechanism 90 waiting at the raised position are shown in FIG. As shown in FIG. 4, the chuck 10 that has been waiting at the lowered position ascends and rises, and the horizontal displacement of the lead wire 80A of the electronic component 80 is corrected by the fixed claw 93 and the movable claw 95 so that the lead wire 80A is removed. Chuck 10
With a pinch. Then, after the fixed claw 93 and the movable claw 95 return to the raised position, the chuck 10 holds the electronic component continuous cut piece 50.
1 with the lead wire 80A of the electronic component 80 of FIG.
, The electronic component continuous cutting piece 50 is pulled out from the component holding portion 22 to the component take-out side, and thereafter a predetermined automatic insertion operation is performed. That is, the holding band portion of the electronic component continuous cutting piece 50 is cut off at a position in the middle of the transfer of the chuck 10 so that only the electronic component 80 is formed, and then the insertion guide 13 shown in FIG.
To the printed circuit board by the insertion guide 13.
Performs zero insertion.

At the delivery position P, the pallet 4 after the electronic component continuous cutting pieces 50 have been transferred to the chuck 10, further receives the guide arc surface 6 of the second turning guide portion 62 in the latter half of the turning portion 60.
2A so as to gradually return to the original first position.
2 is returned. Then, the pallet 4 in which the component holding unit 22 has returned to the first position is sent out to the straight traveling path.

According to the first embodiment, the following effects can be obtained.

(1) The revolving unit 6 that sequentially pushes the rollers 30 of the component holding unit 22 of the pallet 4 according to an arc-shaped traveling.
Inner guide surfaces formed on the first turning guide portion 61 of the first turning portion 60 and the second turning guide portion 62 of the turning portion 60 gradually returning the roller 30 of the component holding portion 22 to the original position. Can be configured with a simple circumferential surface, for example, accuracy can be easily secured by lathe processing, and no processing cost is required.

(2) After the rollers 30 of the component holding part 22 are sequentially pushed by the first turning guide part 61 of the turning part 60 according to the arc-shaped traveling, the part holding part is turned 90 degrees and arrives at the delivery position P. Also, since the second turning guide portion 62 (which may be an extension of the first turning guide portion) 62 following the first turning guide portion 61 of the turning portion 60 can be turned back to the original state, the pallet side And a simple configuration that does not require a latch and an external latch release mechanism.

(3) The accompanying mechanism for rotating the component holding portion 22 of the pallet 4 is greatly simplified as compared with the prior art (for example, a slide bar for rotating the component holding portion 22, and Since no sliding groove or the like is required for this purpose), the processing cost and the assembly cost can be reduced. Since many pallets are used in one electronic component transfer device, the effect of cost reduction is enormous. With the simplification of the mechanism, the durability associated with the repeated operation is also improved.

(4) Japanese Patent Publication No.
No. 58979, the pallet component holding posture is set to 90
In the mechanism for converting the degree, a slider provided with a hook at one end for engaging with a slide bar provided on the pallet is provided radially on the sprocket, and the pallet on the endless belt mechanism moves along the sprocket of the arc-shaped running part. According to the above, the cam follower provided at the other end of the slider having a hook engaged with the pallet side slide bar at one end is restrained by the cam provided at the center of the arc-shaped traveling portion, so that the slide bar enters and exits radially. However, in this embodiment, the first and second turning guide portions 61 and 61 of the turning portion 60 are provided.
Since the posture is changed by 90 degrees by 62, the above-described complicated mechanism is not required, so that significant cost reduction and improvement in maintainability can be obtained.

(5) The pressing lever 63 is provided as pressing means for pressing the component holding portion 22 of the pallet 4 stopped at the delivery position P to the second position rotated by 90 degrees to position. The accuracy of the rotation of the component holder 22 by the first and second turning guides 61 and 62 may be low, and the first and second turning guides 61 and 6 may be used.
In the delivery position P, the component holder 22 can be reliably rotated to the second position irrespective of the accuracy of the second position. The operation of holding (pinching) the lead wire of the component 80 can be reliably performed.

(6) Since the pallet body 20 of the pallet 4 stopped at the delivery position P is pushed down to remove the pallet body from the running surface, the pushing mechanism 75 is provided. It is possible to prevent vertical displacement caused by lifting of the pallet of the lead wire of the held electronic component continuous cutting piece 50 of the electronic component 80.

(7) Lead as a lead wire position correcting means for correcting the horizontal position of the electronic component 80 with respect to the chuck 10 of the electronic component continuous cutting piece 50 held by the pallet 4 stopped at the delivery position P. Line position correction mechanism 90
Is provided, the position of the lead wire of the electronic component 80 in the horizontal direction can be corrected and held by the chuck 10 reliably.

(8) Since the pallet guide 110 for regulating the rotation of the component holder 22 along the straight running portion of the chain 3 and the pallet 4 of the endless belt mechanism is provided, the component holder 22 is moved to the first position. Even if the tension spring 29 that urges to return to the position is broken and the component holding portion 22 is in a free state, the component holding portion 22 can be regulated by the pallet guide 110 to a posture substantially close to the first position. In addition, the risk that the component holding unit 22 interferes with various devices along the pallet traveling route can be eliminated.

In the above embodiment, the turning portion 60 for rotating the component holding portion 22 by 90 degrees from the first position to the second position has the first and second guide arc surfaces 61A and 62A having the same curvature. Although the case where the first and second turning guide portions 61 and 62 are formed of the second turning guide portions 61 and 62 as an integral product is illustrated, the first and second turning guide portions have different curvatures. It may be another part having the arc surface of the above.

The guide arc surfaces 61A, 61 shown in FIG.
The radius of curvature R of 2A is set slightly larger than the radius of the movement locus of the outer surface of the position conversion roller when the pallet 4 travels in an arc while the component holding unit 22 is at the first position. When the first and second turning guides are separated, the radius of curvature may be the same as or slightly smaller than the radius of the movement locus of the outer surface of the position conversion roller.

Although the embodiments of the present invention have been described above, it is obvious to those skilled in the art that the present invention is not limited to the embodiments and various modifications and changes can be made within the scope of the claims. Would.

[0057]

As described above, according to the electronic component transfer device of the present invention, the first and second components are rotated by 90 degrees between the first position and the second position. A swivel part having a second swivel guide part is arranged along an arc-shaped travel part on which the pallet travels in an arc shape, and an arc-shaped part in front of a delivery position of an electronic component continuous cut piece located at an intermediate position of the arc-shaped travel part. In the traveling portion, the first turning guide portion abuts on the position conversion contact member on the component holding portion side to rotate the component holding portion from the first position to the second position, and the delivery position In the arcuate running portion on the rear side, the second turning guide portion is in contact with the position conversion contact member to rotate the component holding portion in the direction of returning to the first position, The mechanism for rotating the component holder is extremely simple, and Processing the first and second pivot guide portion becomes easy. Since the mechanism of the pallet itself can be made extremely simple, durability and maintainability are improved, and since a large number of pallets are used, the cost reduction effect by the pallet simplification is extremely large.

[Brief description of the drawings]

FIG. 1 is a plan view showing a mechanism for rotating a component holding unit of a pallet, which is an embodiment of an electronic component transfer device according to the present invention.

FIG. 2 is a plan view showing the overall configuration of the embodiment.

FIG. 3 is a side sectional view of the same.

FIG. 4 is a side view showing a mechanism for preventing lifting of the pallet at a delivery position and a mechanism for correcting a lead wire position of a continuous cut piece of electronic components held by the pallet in the embodiment.

FIG. 5 is a front view showing a mechanism for correcting a lead wire position of the electronic component at the delivery position.

FIG. 6 is a plan view of a straight traveling portion of the pallet in the embodiment.

FIG. 7 is a sectional side view of the same.

FIG. 8 is a plan view of a pallet used in the embodiment.

FIG. 9 is a side view of the same.

FIG. 10 is a front view similarly seen from the component receiving side.

[Explanation of symbols]

 Reference Signs List 1 electronic component transfer device 2A to 2D sprocket 3 chain 4 pallet 5 supply unit 6 package 7 electronic component unit 10 chuck 20 pallet body 22 component holding unit 24 holding claw 29 tension spring 30 position conversion roller 40 base 41, 51 support rail Reference Signs List 50 electronic component continuous cutting piece 60 turning part 61, 62 turning guide part 61A, 62A guide arc surface 63 pressing lever 70 horizontal support frame 72 vertical rod 73 roller 75 push-down mechanism 80 electronic component 80A lead wire 90 lead wire position correcting mechanism 91 vertical Slider 92 Lifting member 93 Fixed claw 95 Movable claw 110 Pallet guide

Claims (5)

(57) [Claims] 1. A plurality of pallets are provided in an endless belt mechanism that runs intermittently, and a continuous piece of electronic parts cut so that an electronic part has one electronic part with a lead wire is held by the pallet and transferred. In the electronic component transfer device, the pallet includes a component holding unit that holds the electronic component continuous cutting pieces, and a position conversion contact member provided in the component holding unit, and the component holding unit includes an electronic component. A 90-degree rotation between a first position where the lead wire of the electronic component of the continuous cut piece is parallel to the pallet traveling direction and a second position where the lead wire is perpendicular to the pallet traveling direction and returns to the first position. The endless belt mechanism is energized, and an intermediate position of the arc-shaped traveling portion where the endless belt mechanism travels in an arc shape is a delivery position of the electronic component continuous cutting piece, and is located along the arc-shaped traveling portion in front of the delivery position. Contact the contact member for position conversion To the said component holder first
A first turning guide portion for turning from the second position to the second position, and the component holding member which is in contact with the position conversion contact member along the arc-shaped traveling portion rearward from the delivery position. An electronic part transfer device, comprising: a turning part having a second turning guide part for turning the part back to the first position. 2. The electronic component transfer device according to claim 1, further comprising pressing means for pressing and positioning the component holding portion of the pallet stopped at the delivery position to the second position. 3. The electronic component transfer device according to claim 1, further comprising a press-down unit that presses down the pallet stopped at the delivery position to remove the pallet from rising from a running surface. 4. A lead wire position correcting means for correcting a horizontal position of a lead wire of an electronic component with respect to a chuck of an electronic component continuous cut piece held by the pallet stopped at the delivery position. 4. The electronic component transfer device according to claim 1, 2 or 3. 5. The electronic component transfer device according to claim 1, further comprising a pallet guide for restricting rotation of the component holding portion along a straight running portion of the endless belt mechanism.