JPH0224614B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is used in an automatic electronic component insertion device, etc. that molds the lead wire of an axial electronic component into a radial shape and then inserts it into a printed circuit board. The present invention relates to a lead wire forming apparatus for axial electronic components, which reshapes the lead wires of axial electronic components into radial shapes and delivers the radial electronic components to a chuck that can be held.

(Prior art and its problems) Conventionally, axial electronic components are automatically inserted into printed circuit boards using an automatic insertion device for axial electronic components, and apart from this, radial electronic components are automatically inserted into printed circuit boards using an automatic insertion device for radial electronic components. was used to insert it into the printed circuit board. However, it is uneconomical to use dedicated machines for axial and radial electronic components, and customers have been demanding an automatic insertion device that can be used commonly for axial and radial electronic components.

The automatic insertion device that the applicant is considering developing uses a mechanism that inserts radial lead wires into printed circuit boards, so in the case of axial electronic components, the lead wires may be inserted during the process. must be molded into a radial shape. In this case, since it is desired to increase the insertion speed, a mechanism suitable for increasing the speed in lead wire molding is also desired.

(Means for Solving the Problems) In view of the above-mentioned points, the present invention provides a system for moving pallets for axial electronic component transfer on a travel path that matches the arrangement interval of the pallets and that moves in synchronization with the intermittent travel of the pallets. By arranging a plurality of molding units and molding the lead wire of the axial electronic component into a radial shape using the outer mold, inner mold, and pressing mold of the molding unit, it is possible to sufficiently cope with high-speed traveling of the pallet. It is an object of the present invention to provide a lead wire molding device for axial electronic components that can reliably transfer electronic components to a chuck or the like that clamps a radial lead wire.

(Example) Hereinafter, an example of a lead wire molding apparatus for an axial electronic component according to the present invention will be described with reference to the drawings.

FIG. 18 shows an example of an electronic component transfer device provided with a lead wire molding device for axial electronic components. Further, FIG. 19 is an example of an electronic component transfer pallet for transferring axial electronic components in the electronic component transfer apparatus shown in FIG. 18. In these figures, the pallet 1 has a chain 3 which runs intermittently in the horizontal direction in the part of the pallet body 2.
The pallet body 2 is fixed to a support base 3 on top of the pallet body 2.
is fixed, and a component mounting section 4 for axial electronic components is pivotally mounted on the support base 3 by pins 5. This component mounting section 4 has a pair of arms 6, and these arms 6 have a lead wire 10 of an axial electronic component 10 separated from an axial electronic component series 15.
V-shaped receiving grooves 7 for receiving B are respectively formed. This component mounting section 4 is pivotally supported to the support base 3 by a pin 5, so that by pushing the pressing section 4A at the rear end, the pair of arms 6 at the front end can be lifted. In a normal transfer state, the spring restricts the transport to a horizontal state in close contact with the support base 3. Further, a leaf spring stopper 8 is attached to the pin 5.
is attached, and the leaf spring stopper 8 is attached to the spring 9
The tip is urged upward. However, the position of the leaf spring stopper 8 is regulated with the rear part of the leaf spring stopper 8 in contact with the upper surface of the component placement section 4, and the leaf spring stopper 8 is
The distal end portions 8A are located on the outer sides of the pair of arms 6 of the component placement portion 4, respectively, to regulate the position of the lead wire tips of the axial electronic component 10.

Note that since the pallet 1 is normally used for both radial and axial electronic components, it is provided with a component holding section 12 for radial electronic components.

As shown in FIG. 18, an axial electronic component supply section 11 is provided along the straight path of the pallet 1, and the axial electronic component supply section 11 collects axial electronic components 10 one by one from an axial electronic component series 15. It is separated and supplied to the component placement section 4 of the pallet 1. And axial electronic parts 10
is transported in the direction of the delivery position P opposite to the chuck 17 of the circulation chuck mechanism 16 as the pallet 1 is intermittently traveling in a posture parallel to the pallet traveling direction. Chuck 17 waiting at delivery position P
is capable of holding radial type lead wires, but cannot hold axial type lead wires, so the lead wires of the axial electronic component 10 must be reshaped into radial type before the axial electronic component 10 reaches the delivery position P. For this purpose, the axial electronic component lead wire forming apparatus 20 whose details are shown in FIGS. 1 to 17 is placed at the delivery position P.
The pallet containing the pallet is placed on an arc-shaped traveling path.

1 and 2 show the overall configuration of a lead wire forming apparatus 20 for axial electronic components. In these figures, the molding units 21 are arranged at equal angular intervals (for example, 16) on an index table 22, and the index table 22 has a sprocket 23 that meshes with the chain 3 to make the pallet 1 travel in an arc shape. It is fixed to the intermittent rotating shaft 24. Here, the arrangement interval of the molding units 21 corresponds to the arrangement interval of the pallets 1, and they rotate intermittently in synchronization with the pallets 1. Then, the rotating shaft 2
A cylindrical cam 25 is pivotally supported on 4. The cylindrical cam 25 has a plurality of cam grooves 25A, 25 for causing each molding unit 21 to perform a lead wire molding operation.
B, 25C. The cylindrical cam 25 is
As shown in FIG. 3, it is connected via a connecting rod 26 to a cam follower 28 operated by another main drive cam 27. That is, the roller 29 of the cam follower 28 whose one end is pivotally supported by the main body frame 35 is fitted into the cam groove 30 of the cam 27. As the cam 27 rotates, the cylindrical cam 25 rotates in the same direction as the index table 22 rotates, and when the index table 22 stops, it reverses and the cam surfaces 25A, 25B, 25C rotate each molding unit 21. perform a predetermined action depending on the position.

The molding unit 21 moves with the intermittent rotation of the index table 22 (that is, moves in synchronization with the pallet 1), and is connected to the main body 30 fixed thereon by a parallel link. It has a head portion 31. The main body part 3
A push rod actuating rod 32 for operating a push rod for lifting the tip of the component mounting portion 4 of the pallet 1 is provided on the pallet 1 so as to be slidable in the vertical direction. 3 and 4 in order to push down the push rod operating rod 32 of the molding unit 21 at point A in FIG.
A lever 33 as shown in the figure is pivotally supported on a main body frame 35. The lever 33 is connected to the main body frame 35.
It is connected to a cam follower 37 which is pivotally mounted to a bracket 36 erected thereon. The cam follower 3
The roller 38 of No. 7 contacts the push rod drive cam 39.

Note that an axial/radial switching air cylinder 40 is connected between the cam follower 37 and the bracket 36, and the air cylinder 40
When the lever 33 is extended, the cam follower 37 is brought into contact with the push rod drive cam 39, and the lever 33 is actuated. This means that when pallet 1 is used for both axial and radial electronic component transfer, the lever 33 is actuated and pushed only when pallet 1 reaches point A in Figure 1 during axial electronic component transfer. The rod actuating rod 32 is pushed down.

5 to 7 show details of the molding unit 21 (however, FIG. 6 is a view seen from the opposite side of FIG. 5). In these figures, the main body 30 includes:
A head portion 31 is connected via parallel links 45 and 46, and an outer mold 47, an inner mold 48, and a pressing mold 49 are provided on the head portion 31. These outer molds 4
7. The lower end shape of the inner mold 48 and the pressing mold 49 is the 12th
This is shown in FIGS. 15-15. Further, a head section elevating slider 50 is provided on the upper part of the main body section 30 so as to be slidable in the horizontal direction, and is biased in the forward direction (in the direction of arrow Q) by an extension spring 53. The tip of the slider 50 and the head portion 31 are connected by a link 51. The roller 52 at the rear end of the slider 50 can engage with the cam groove 25A of the cylindrical cam 25. The state shown in FIGS. 5 and 6 is that of the slider 5.
0 is in the retracted position and the head portion 31 is in the raised position.

A stopper 55 is fixed to the upper surface of the head section lifting/lowering slider 50, and a stopper lever 56 is pivotally mounted on the main body section 30 side so as to be able to engage with the stopper 55. As shown in FIG. 7, an axial/radial switching air cylinder 57 is attached to the main body frame 35, and a lever 58 operated by the air cylinder 57 moves the pallet 11 containing the axial electronic components to point B in FIG. When the air cylinder 57 extends and moves, the stopper lever 56 is rotated counterclockwise to release the engagement between the stopper lever 56 and the stopper 55. From then on, the roller 52 at the rear end of the slider 50 is rotated in a cylindrical manner. It is made to move according to the cam groove 25A of the cam 25. A compression spring 59 is provided between the stopper lever 56 and the main body 30, and urges the stopper lever 56 in the clockwise direction.

Further, the main body portion 30 is provided with a vertical slider 60 for driving the molding die so as to be freely slidable in the vertical direction.
One end of a bell crank 62 pivotally supported on the main body 30 is connected to a pin 61 provided on the slider 60, and the other end of the bell crank 62 is connected to a lever pivotally supported on the head portion 31 side via a link 63. 64. The other end of the lever 64 is connected to the connecting portion 47A of the outer mold 47 via a pin 65. Note that the slider 60 is provided with a roller 66 that engages with the cam groove 25B of the cylindrical cam 25.

As shown in FIGS. 5, 6, and 8, an outer die 47 and a push die 49 are provided on the head portion 31 so as to be slidable in the vertical direction, and the push die 49 is disposed between the outer die 47. , is urged downward by a compression spring 70. Further, a pin 71 is fixed to the upper end of the press die 49, and the pin 71 is engaged with the link 51.

Further, an inner die slider 72 is provided on the head portion 31 so as to be movable up and down, and the upper end of the inner die 48 is pivotally connected to the lower end of the inner die slider 72. The inner mold slider 72 is urged upward by an extension spring 73. Further, the slider 72 is pushed down by an actuator 74 of the link 51 when the link 51 rotates to the left. In the standby state where the inner mold 48 is retracted, the head portion 31 is closed as shown in FIG.
It is engaged with the side engaging member 75 and is forcibly lowered. The mechanism portion that drives the inner mold 48 is mainly shown in FIG. That is, one end of a bell crank 76 that is coaxially fixed and interlocked with the bell crank 62 is connected to one end of a lever 78 that is pivotally supported on the head portion 31 via a link 77.
The other end of the lever 78 engages with a pin 79 of the inner mold 48. The other end of the bell crank 76 is engageable with a latch 80. That is, when the electronic component is gripped by the outer mold 47 and the inner mold 48 after the tip of the component mounting portion 4 of the pallet 1 is lifted and positioned using the push rod 92 described later,
The bell crank 76 is latched in conjunction with the push rod 92, and the inner mold 47 is latched in the electronic component holding state.
The mold drive vertical slider 60 is provided with a pin 81 for releasing the engagement between the latch 80 and the bell crank 76.

FIGS. 9 and 10 show a push rod actuating rod 32 provided on the main body 30 so as to be slidable in the vertical direction.
The configuration of the lower end of is shown. The push rod actuating rod 32
As shown in FIG. 10, the lower end is a tapered cam 90, and a push rod 92 is provided so as to pass through a block 91 fixed to the tapered cam 90, and is urged downward by a tension spring 93. ing. That is, the block 93A, which is slidably guided up and down by the rod 32, is urged downward by the spring 93, and this force is applied to the push rod 92, which is in contact with the lower end of the block 93A, downwardly through the interlocking rod 93B that interlocks with the block 93A. I'm pushing it. Incidentally, as shown in FIG. 5, the rod 32 is urged upward by an extension spring 94.

Further, at the lower end of the main body part 30,
As shown in Figure 1, a pair of component positioning levers 9
5 is pivotally connected with a pin 96. A positioning bolt 97 that contacts the leaf spring stopper 8 on the pallet 1 side is provided at the tip of the lever 95, and a roller 98 that contacts the tapered cam 90 is provided at the rear end. An extension spring 99 is provided between the pair of levers 95 and biases the ends of both levers 95 in the direction of opening. Note that 110 is a stopper that restricts the inclination of the component placement section 4 on the pallet 1 side.

As shown in FIG. 2, the positioning claw slider 1 is inserted through the lower part of the main body 30 of each molding unit 21.
00 is provided so as to be slidable in the horizontal direction. At the tip of the slider 100, the
A positioning pawl 101 shown in FIGS. 6 and 17 is fixed, and the cam groove 25C of the cylindrical cam 25 is fixed at the rear end.
A roller 102 is provided which engages the.

(Operation of the Embodiment) In the configuration of the embodiment described above, when the pallet 1 holding the axial electronic components 10 reaches the arc-shaped traveling path opposite the chuck 17 and is located at point A in FIG. The radial switching air cylinder 40 extends and moves the molding unit 2.
1 is driven by the push rod drive cam 39 and the cylindrical cam 25, and the molding unit 21 at point A
The push rod operating rod 32 is pushed down by a lever 33 actuated by a push rod drive cam 39. As a result, the pushing rod 92 pushes down the pushing part 4A at the rear end of the component mounting section 4 of the pallet 1 on which the axial electronic components 2 are mounted, as shown by the dashed line in FIG. The arm 6 at the tip of the section 4 is lifted. Also, in conjunction with this, Palette 1
The tip 8A of the leaf spring stopper 8 is also lifted. Meanwhile, at the same time, as shown in FIG. 10, the taper cam 90 is lowered to operate the pair of component positioning levers 95, and as shown in FIG. is set to a predetermined value to locate the axial electronic component 10. Next, push rod actuating rod 32
In the final step, the inner mold 48 is moved to grasp the axial electronic component 10. At this time, the head portion 31 of the molding unit 21 is in the retracted state as shown in FIG. 5, and the outer mold 47 and the pressing mold 49 are in the raised position.

Through the above operations, the axial electronic component 10 is brought into contact with the lower end of the outer mold 47 as shown in FIG. 12 in an accurately positioned state. Then, as shown in FIG. 13, the main body 10A of the axial electronic component 10 is held between the outer mold 47 and the inner mold 48 tips. Thereafter, the push rod 92 and the tapered cam 90 return to their original raised positions, and the component placement section 4 of the pallet 1 and the leaf spring stopper 8 also return to the horizontal position. As a result, the holding of the axial electronic component 10 is transferred from the pallet 1 to the head portion 31 of the molding unit 21, as shown in FIG.

Axial electronic component 1 with outer mold 47 and inner mold 48
The molding unit 21 holding the value 0 reaches point B in FIG. 1 due to the intermittent rotation of the index table 22 on which it is placed. At this point B, the axial/radial switching air cylinder 57 extends and the cam groove 25A of the cylindrical cam 25 moves forward the head lifting slider 50, which is connected to the main body 30 by the parallel links 45 and 46. The head portion 31 advances and descends as shown by the one-dot chain line in FIG. This is to prevent the component mounting portion 4 of the pallet 1 from getting in the way during the lead wire molding operation for axial electronic components.
In parallel with such an operation of the head portion 31, the upper and lower sliders 60 for driving the molding die are raised by the cam grooves 25B, and the outer mold 47 and the pressing mold 49 are lowered relative to the inner mold 48. As shown in the figure, the lead wire 10 of the axial electronic component 10
B is formed into a radial mold. That is, in a state where the main body 10A of the axial electronic component 10 is held between the inner die 48 and the press die 49, the 12th
The lead wire 10B is bent along the molding groove 47B inside the outer mold 47 shown in the figure.

When the molding unit 21 reaches point C opposite the chuck 17 due to the intermittent rotation of the index table 22, the positioning pawl slider 100, which has been in the retracted position, advances due to the action of the cam groove 25C of the cylindrical cam 25. For the lead wire 10B formed into a radial shape as shown in FIG.
A positioning pawl 101 having a V-groove 105 shown in the figure is engaged to accurately regulate the interval between the radially molded lead wires. In this state, check 1
7 holds the radial type lead wire 10B. Thereafter, the claw 101 returns to the retracted position, the outer die 47 and the push die 49 return to the raised position, and the inner die 4
8 returns to the retreat position.

Molding unit 21 that handed over the parts to chuck 17
As the index table 22 rotates, it reaches point D in FIG.
1 returns to the original raised position.

(Effects of the Invention) As explained above, according to the axial electronic component lead wire molding apparatus of the present invention, the following effects can be obtained.

(1) Even if pallet 1 is used for both axial and radial electronic components, it is possible to select only the pallet carrying axial electronic components and bend it into a radial shape. It is possible to realize an automatic insertion device that can also be used for electronic components.

(2) Using molding units 21 arranged at equal intervals with the pallet 1 and moving in synchronization with the pallet 1,
While the pallet 1 is repeatedly traveling intermittently several times, the lead wire of the axial electronic component 10 is being bent into a radial shape, and the chuck 1
Compared to the case where bending and forming is performed only at one location facing 7, it is possible to cope with higher speed.

(3) It is possible to accurately and reliably bend and form the lead wires of axial electronic components.
It is also possible to reliably transfer the information to others.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the overall configuration of an embodiment of an axial electronic component lead wire forming apparatus according to the present invention, FIG. 2 is a front sectional view of the same, and FIG. FIG. 4 is a plan view showing the mechanism part, FIG. 4 is a front view showing the mechanism part that drives the push rod operating rod of the molding unit, FIG.
Figure 7 is a rear view showing the other link mechanism of the molding unit, Figure 7 is a front view showing the mechanism that switches the operation for the axial and radial electronic components of the molding unit, and Figure 8 is the outer mold and inner mold parts. Fig. 9 is a front view showing the mechanical parts such as the push rod that operates the pallet, Fig. 10 is a side view of the taper cam part, and Fig. 11 is the axial electronic component held on the pallet side. FIG. 12 is a side sectional view showing a state in which an axial electronic component held on the pallet side is about to be received by the outer die, inner die, and press die; FIGS. 13 to 16 17 is a front view showing the operation of the outer die, inner die, and press die, FIG. 17 is a plan view showing the configuration of the positioning claw, and FIG. 18 is an electronic component transfer to which the axial electronic component lead wire molding apparatus of the present invention is applied. FIG. 19 is a schematic perspective view of the apparatus, and is a perspective view showing an example of a pallet for transferring electronic components. 1... Pallet, 4... Component placement section, 8... Leaf spring stopper, 10... Axial electronic component, 1
0A...main body, 10B...lead wire, 17...chuck, 20...lead wire molding device for axial electronic components, 21...molding unit, 22...index table, 25...cylindrical cam, 30...
Body part, 31...Head part, 40, 57...Air cylinder, 47...Outer mold, 48...Inner mold, 49
... Push die, 92 ... Push rod, 101 ... Positioning claw.

Claims (1)

[Scope of Claims] 1. An index table is provided along an arc-shaped travel path of a pallet for transferring axial electronic components, and is concentric with the arc central axis of the travel path and moves in synchronization with the intermittent travel of the pallet. a plurality of molding units are arranged on the index table at equal intervals to match the arrangement interval of the pallets, and are pivoted concentrically with the index table;
rotates with the molding unit as it advances;
A cam member that rotates in reverse when the molding unit is stopped drives an outer mold, an inner mold, and a pressing mold of the molding unit, and the inner mold and the outer mold receive axial electronic components from the pallet, and the inner mold and the pressing mold receive axial electronic components from the pallet. The molding operation of holding the main body of the axial electronic component and molding the lead wire of the axial electronic component into a radial mold in the molding groove of the outer mold is partially performed at each of the plurality of stop positions of the index table. A lead wire molding apparatus for an axial electronic component, characterized in that the molding unit transfers the electronic component to a delivery position where the electronic component is delivered to a chuck facing the travel path by advancing the molding unit. 2. An index that moves in synchronization with the intermittent movement of the pallet along an arcuate travel path of the pallet, which has a tiltable component mounting portion that holds axial electronic components at its tip, and is concentric with the arc central axis of the travel path. an index table is provided, a plurality of molding units are arranged on the index table at regular intervals in accordance with the arrangement spacing of the pallets, a push rod, an outer mold, an inner mold and a pressing mold are provided on the molding unit; Pivoted concentrically with the index table,
rotates with the molding unit as it advances;
driving the outer die, inner die, and push die by a cam member that rotates in reverse when the molding unit is stopped, and lifting the tip of the component placement portion by the push rod at a first stop position of the index table; The axial electronic component at the tip is received by the outer mold and the inner mold, and at the second stop position of the index table, the main body of the axial electronic component is held between the inner mold and the pressing mold to form the outer mold. The axial electronic component is characterized in that a lead wire of the axial electronic component is molded into a radial shape in a groove, and as the molding unit advances, the electronic component is transferred to a delivery position where the electronic component is delivered to a chuck facing the traveling path. Lead wire forming equipment for parts. 3. The lead wire molding apparatus for axial electronic components according to claim 2, wherein the molding unit is provided with a positioning claw for positioning the radially molded lead wire at the delivery position. 4. A pallet having a tiltable component placement section that holds an axial electronic component at its tip, and plate spring stoppers on both sides of the component placement section. An index table is provided that is concentric with the shaft and moves in synchronization with the intermittent movement of the pallets, and a plurality of molding units are arranged on the index table at equal intervals matching the arrangement interval of the pallets, and the molding units are A push rod, an outer die, an inner die, and a push die are provided, and are pivotally supported concentrically with the index table,
rotates with the molding unit as it advances;
The outer die, the inner die, and the push die are driven by a cam member that rotates in reverse when the molding unit is stopped, and at the first stop position of the index table, the tip of the component placement portion is lifted up by the push rod. A cam interlocking with the push rod narrows the interval between the leaf spring stoppers to position the axial electronic component on the component placement section, and the axial electronic component at the tip is moved between the outer mold and the inner mold of the molding unit. After receiving the axial electronic component, the main body of the axial electronic component is held between the inner mold and the pressing mold at a second stop position of the index table, and the lead wire of the axial electronic component is molded into a radial mold in the molding groove of the outer mold. . A lead wire molding apparatus for an axial electronic component, wherein the electronic component is transferred to a delivery position where the electronic component is delivered to a chuck facing the travel path by the advancement of the molding unit.