JPS643551Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention corrects the bent state of lead wires of so-called vertical electronic components, such as resistors and capacitors, which have lead wires inserted into printed wiring boards. The present invention relates to a device for shaping electronic components.

BACKGROUND ART There is a growing demand for high density mounting of electronic components on printed wiring boards. Therefore, if the previously mounted electronic component is undesirably tilted, it will interfere with the subsequently mounted electronic component, making it impossible to mount the electronic component thereafter. If you correct the tilted electronic components at that time, the operating rate of the automatic loading machine will decrease and productivity will decrease.Also, even if the electronic components that interfered can be mounted,
The electronic components were damaged and quality deteriorated.

For example, as shown in FIG. 5, the lead wire 1a of a so-called vertical electronic component 1 is inserted into a printed wiring board 3 while being held by a charging guide piece 2 of an automatic loading machine. At the time of mounting, the vertical electronic component 1 is pressed by a push rod 4 provided in the automatic loading machine, and the mounting is performed in this manner. If the lead wire 1a is bent, it remains tilted even when the lead wire 1a is inserted into the printed wiring board 3 and the insertion guide piece 2 is removed, as shown in FIG. Therefore, after loading, the vertical electronic component 1 remains tilted as shown in FIG. 5. Such tilted vertical electronic components become an obstacle to high-density packaging.

Problems to be Solved An object of the present invention is to correct the inclination of electronic components to be mounted on a printed wiring board to prevent mutual interference between the electronic components, thereby enabling high-density mounting and improving productivity. Another object of the present invention is to provide an electronic component shaping device that improves quality.

Function According to the present invention, the pair of bell cranks pivotally supported on the base body each have a pressing claw, and the pressing claws drive the electronic components conveyed to the conveying path by the hydraulic cylinder. Therefore, the amount of angular displacement of the bellcrank and, therefore, the amount of correction of the tilt of the electronic component by the pressing pawl can be adjusted by the stopper.

Embodiment FIG. 1 is a plan view of a shaping device 6 according to an embodiment of the present invention, and FIG. 2 is a section line A-B-C of FIG. 1.
FIG. 3 is a simplified sectional view showing a state in which the shaping device 6 is provided and the vertical electronic component 1 is inserted into the printed wiring board 3. The electronic component 1 is, for example, a resistor and a capacitor, and has a lead wire 1a. The chuck device 7 includes an inclined rotating shaft 8 and a tilted rotating shaft 8.
It has a plurality of chucks 9 which are angularly displaced around the chucks 9 and spaced apart in the circumferential direction. Each check 9
, the lead wire 1a of the electronic component 1 is held.
By angularly displacing the chuck 9 around the rotation axis 8, the electronic component 1 held by the chuck 9 passes through a conveyance path 10, and a shaping device 6 according to the present invention is placed in the middle of this conveyance path 10. is placed. Electronic component 1 held by chuck 9
The tilt is corrected by the shaping device 6, and the electronic component 1 after correction is placed in the loading guide piece 1 of the automatic loading machine 11.
2 and is picked up and placed on a printed wiring board 3 for mounting.

The base body 13 of the shaping device 6 has a support portion 14 and side walls 15 and 16. A pair of bell cranks 17 and 18 and fluid pressure cylinders 19 and 20 that individually correspond to the bell cranks 17 and 18 are attached to the support portion 14 . bell crank 17
A pin 21 is inserted through the support portion 14, and the pin 21 is erected and fixed to the support portion 14. A cylindrical spacer 22 is inserted through the pin 21, and the bell crank 17 is spaced apart from the support part 14. This bell crank 17 is connected to pin 2 by a snap spring 23.
Extraction from 1 is prevented. bell crank 17
is the conveyance path 10 from the pin 21 to the support part 14.
an extending portion 24 extending to the side, a pressing claw 25 extending from the extending portion 24 toward the electronic component 1 on the conveyance path 10, and a side opposite to the extending portion 24 with respect to the pin 21 along the extending portion 24; The mounting portion 27 has a base end portion 26 extending inwardly (downward in FIG. 1) perpendicularly to the extending portion 24 and the base end portion 26 . A pin 28 is inserted into the attachment portion 27 . A U-shaped bracket 30 is fixed to the piston rod 29 of the fluid pressure cylinder 19, this bracket 30 holds the connecting portion 27, and a pin 28 is inserted through this bracket 30. The fluid pressure cylinder 19 is provided with a spring 32 on the head side of the piston 31, which biases the piston rod 29 in the direction of extension.
Room 3 on the piston rod 29 side of the fluid pressure cylinder 19
3 is supplied with fluid pressure such as air pressure from a conduit 34 and a connection port 35.

The other bell crank 18 also includes an extension portion 36, a pressing pawl 37, a proximal end portion 38, and a connecting portion 3.
9 and is attached to the support part 14 by a pin 40. Piston rod 41 of fluid pressure cylinder 20
A connecting portion 39 is connected to the connecting portion 39 by a pin 42 . The fluid pressure cylinders 19 and 20 have similar configurations, and are connected to the support portion 14 by clevis pins 43 and 44.
connected to. Pins 21, 28, 40, 42, 4
3 and 44 have parallel axes. Fluid pressure such as air pressure is supplied to the fluid pressure cylinder 22 from a conduit 45. The pressing claws 25 and 37 face the transport path 10 of the electronic component 1 and are opposed to each other.

By supplying fluid pressure from line 34 to chamber 33 of hydraulic cylinder 19 and contracting piston rod 29 against the spring force of spring 32, bell crank 17 is rotated counterclockwise around pin 21. angular displacement in the direction. In this way, the pressing claw 25 is able to press the lead wire 1a of the electronic component 1 located on the transport path 10.
is pressed downward in FIG. 1, whereby the lead wire 1a is straightened and shaped. Conduit 34
By releasing fluid pressure from the spring 32
extends the piston rod 29, thereby releasing the pressing state of the lead wire 1a by the pressing claw 25.

Fluid pressure cylinder 1 at the tip of the pressing claw 25
An inclined surface 46 is formed on the 9 side (the right side in FIG. 1). As a result, the pressing claw 25
It becomes possible to shape the lead wire 1a by contacting only the lead wire 1a without contacting the electronic component 1, and damage to the electronic component 1 is prevented.

An insertion hole 47 is formed in the side wall 15, and a nut 48 is fixed coaxially with the insertion hole 47.
A shaft portion 50 of a bolt 49 is screwed into the nut 48 . The shaft portion 50 is inserted into the insertion hole 47 and faces the base end portion 26 of the bell crank 24 . bolt 49
By adjusting the amount of protrusion of the shaft portion 50 from the side wall 15, the piston rod 2 of the fluid pressure cylinder 19 can be
Bell crank 17 when 9 is contracting
The amount of displacement around the pin 21 can be limited. As a result, the lead wire 1a by the pressing claw 25
The amount of correction can be adjusted.
A bolt 51a is similarly provided in connection with the other bell crank 18.

Electronic component 1 to be mounted on printed wiring board 3
The lead wire 1 is as shown in FIG.
a is supported by being attached to the mount 52. A sectional view taken along the section line - in FIG. 41 is as shown in FIG. 42.
When the lead wire 1a is bent, it is necessary to straighten it using the shaping device 6 as described above. The mount 52 on which the electronic components 1 are mounted at intervals is attached to each electronic component 1 as shown in FIG.
The side view of the state shown in FIG. 4 is shown in FIG. 4. The lead wire 1a of the electronic component 1 is gripped by the chuck device 7 shown in FIG. 3, as shown in FIG. 4, and its side surface becomes as shown in FIG. 4. In this way, on the mount 52, the electronic component 1 having the inclined lead wire 1a is held straight by the chuck 9 of the chuck device 7, and is shaped straight by the shaping device 6. The shaped electronic component 1 is then brought into the state shown by the imaginary line 1b in FIG. In order to grasp the lead wire 1c of the electronic component indicated by reference numeral 1b,
The charging guide piece 12 of the automatic charging machine 11 is aligned with the imaginary line 12
brought to the position indicated by a. As a result, the electronic component 1b held by the chuck 9
is gripped by the charging guide piece 12 and moves, resulting in the state shown in FIG. 4 and 7. Therefore, the loading guide piece 12 brings the electronic component 1 to the loading position of the printed wiring board 3, and the lead wire 1a of the electronic component 1 is connected to the printed wiring board 3 using the push rod 4 provided in the automatic loading machine 11. The material is charged into the charging hole as shown in FIG. 4 and 8. The electronic component 1 with the lead wires 1a inserted into the printed wiring board 3 in this manner is shown in FIG. 4. In this way, with the lead wire 1a in a straight state, the electronic component 1
is inserted into the printed wiring board 3, so there is no risk of interference with electronic components that are inserted later.
High-density packaging becomes possible.

In the above embodiment, the shaping device according to the present invention was used to straighten the lead wire 1a of an electronic component, but in another embodiment of the present invention, the shaping device may be used to bend the lead wire 1a at a predetermined angle. The present invention will also be implemented.

Effects As described above, according to the present invention, a pair of bell cranks is angularly displaced by a fluid pressure cylinder, and the lead wire of an electronic component is shaped by the pressing claw provided on the bell crank. As a result, mutual interference between electronic components can be avoided when electronic components are mounted on a printed wiring board, which enables high-density mounting and prevents damage caused by component interference during mounting. It is possible to improve quality. Furthermore, since the electronic components are accurately mounted on the printed wiring board, there is no interruption in the mounting work of the electronic components, and therefore productivity is improved.

Although the mechanism uses a swinging motion using a bell crank, it is not limited to this.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a sectional view taken along the cutting plane line A-B-C-D-E-F in Fig. 1, and Fig. 3 is a shaping device according to the present invention. 6 is a simplified cross-sectional view of an apparatus for mounting an electronic component 6, FIG. 4 is a simplified diagram showing a state in which an electronic component 1 is mounted using a shaping device 6, and FIG. FIG. 3 is a simplified diagram showing the state of mounting of component 1. FIG. DESCRIPTION OF SYMBOLS 1... Electronic component, 6... Shaping device, 7... Chuck device, 10... Conveyance path, 11... Automatic loading machine, 13... Base, 14... Support part, 15, 16
...Side wall, 17,18...Bell crank, 19,
20... Fluid pressure cylinder, 25, 37... Pressing claw, 26, 38... Base end portion, 50, 51a... Bolt.

Claims (1)

[Scope of utility model registration request] A pair of bell cranks having pressing pawls facing the conveyance path of the electronic component are pivotally supported on the base body, the bell cranks are individually driven by fluid pressure cylinders, and the pressing pawls are opposed to the conveyance path, 1. A device for shaping an electronic component, characterized in that a stopper is provided near the base end of the bell crank, the stopper being in contact with the base end of the bell crank and capable of adjusting the amount of angular displacement.