JPS6235537Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] The invention is based on two electronic components inserted into a printed circuit board.
This invention relates to a device that automatically cuts off unnecessary parts of book lead wires, bends the remaining parts of the lead wires along the printed circuit board, and fixes electronic components on the printed circuit board.

[Conventional technology]

Conventionally, as shown in FIGS. 9 and 10, this type of device has been equipped with a pair of movable mounts 6, 6 each having a fixed blade 70 for each lead wire, and a swinging lever 76 that rotates in a vertical plane. , 76 are provided, and the unnecessary parts of the two lead wires 91, 91 exposed on the back surface of the printed circuit board 90 are sandwiched between the cutting blades 71, 71 at the upper end of the lever and the fixed blades 70, 70, Swing lever 7
By turning 6, cut off the unnecessary part of the lead wire,
Furthermore, the remaining portions of the lead wires are bent along the printed circuit board 90 to fix the electronic component 9 to the circuit board.

The above device can mount electronic components on printed circuit boards with high efficiency.

[Problem that the invention attempts to solve]

However, since the distance between the two lead wires of electronic components differs depending on the type, the above device uses mounting bases 6 and 6.
That is, the cutting blades 71, 71 and the fixed blades 70, 7
There was a problem in that the spacing between zeros could not be adjusted and it was not possible to cut and bend the lead wires of all electronic components with one device.

[Means for solving problems]

This invention automatically cuts and bends lead wires for multiple types of electronic components with different lead wire spacings using a single device, by installing a pair of mounts so that the distance between them can be adjusted. It allows you to do the following:

A pair of mounting bases 6, 6 with fixed blades 70 projecting thereon that can be raised and lowered and rotated, and a swinging lever 76 provided with a cutting blade 71 paired with the fixed blade 70 at its upper end, respectively.
76 is arranged rotatably in a vertical plane. Both mounting bases 6, 6 are supported by a support block 4 that is driven up and down and rotated.
It is slidably disposed above in a horizontal plane. Each of the mounting bases 6, 6 is connected to a link mechanism that allows them to move toward or away from each other at the same time, and to this link mechanism is connected a distance adjusting device 5 that includes a plurality of cylinder devices 57 with different strokes. A cylinder device with an appropriate stroke is selectively operated in accordance with the lead wire spacing of the electronic component 9 to adjust the spacing between the two mounts.

[Effect]

The spacing adjustment device 5 is operated to select and operate the piston rod 50a having a stroke length corresponding to the spacing between the two lead wires of the electronic component to be inserted, thereby driving the link mechanism (see FIG. 3). As a result, the mounting bases 6, 6 move toward or away from each other, and the distance between the swing levers 76, 76 is expanded or contracted in accordance with the distance between the lead wires.

In addition, if the insertion posture of the electronic component 9 to be inserted is different, the supporting block 4 is driven to rotate the pair of mounting bases 6, 6 to change the direction of the swing levers 76, 76 and the fixed blades 70, 70. The arrangement direction of both lead wires 91, 91 of the electronic component 9 is made to match.

Next, drive the support block 4 to install both mounting bases 6, 6.
is raised together with the swinging levers 76, 76, and the lead wire 91 is inserted between the cutting blade 71 of the lever 76 and the fixed blade 70. By rotating the swing levers 76, 76, the cutting blade 71 and the fixed blade 7
0, the lead wire is cut by
Fixed to 0.

[Effect of the invention] Corresponding to the distance between the two lead wires of the electronic component,
By selecting and operating a cylinder device for adjusting the distance, the distance between the mounting base and the swing lever can be made to correspond to the distance between the lead wires, and one device can handle electronic components with different lead wire distances. Can be installed.

〔Example〕

FIG. 8 shows a working situation on a printed circuit board assembly line, in which a device 8 for cutting and bending lead wires of electronic components according to the present invention is placed below a printed circuit board conveying line 92 through a turntable device 2. - Y is arranged on the table 1.

As shown in FIG. 1, the electronic component lead wire cutting and bending fixing device 8 according to the present invention supports the support block 4 by means of lifting cylinder devices 3 fixed to both ends of the turntable 20. support,
A spacing adjustment device 5 is fixed to the front side surface of the support block 4, and a pair of mounts 6, 6 are disposed on the upper surface of the support block 4 so as to be slidable in a horizontal plane. Both mounting bases 6, 6 are a pair of links 53, 5
3 is connected to the spacing adjustment device 5 via a link mechanism comprising 3. A pair of lead wire cutting and fixing devices 7, 7 are installed close to each other on the upper surfaces of both mounting bases 6, 6, and a swinging lever 7 equipped with a cutting blade 71 is installed.
6 is swing-driven by a rod-pressing cylinder device 44 built into the support block 4 (see FIG. 4).

The pair of lead wire cutting devices 7, 7 are separated from each other together with the mounting bases 6, 6 by the drive of the spacing adjustment device 5, and opened to the distance between the two lead wires of the electronic component, and are supported by the drive of the lifting cylinder device 3. The block 4, the mounting bases 6, and the spacing adjustment device 5 are raised together, and the lead wire of the electronic component is inserted between the fixed blade 70 and the cutting blade 71.

The detailed structure of each of the above devices will be described below.

As shown in FIG. 1, the X-Y table 1 includes a driving plate 10 that moves in the longitudinal direction A of the printed circuit board conveyance line 92, a driving shaft 11 that moves in the direction B that intersects the longitudinal direction, and the driving shaft. 11 and a support plate 12 fixed to the end thereof.

As shown in FIG. 2, the turntable device 2 includes a turntable 20 pivotally supported on the support plate 12.
A pin 21 is eccentrically protruded from the lower surface of the , and a sliding piece 23 having an elongated hole 24 is fitted into the pin, and
It is slidably guided by guides 22, 22 on the support plate 12. The sliding piece 23 is connected to a piston rod of a rotating cylinder device 25. By reciprocating the sliding piece 23 by the cylinder device 25, the inner surface of the elongated hole 24 becomes a cam surface to drive the pin 21 and rotate the turntable 20 through 90 degrees.

As shown in FIG. 1, two guide rails 45, 45 are protruded in parallel from the upper surface of the support block 4, and a pair of mounts 6, which are formed in a flat rectangular shape, straddle the guide rails 45, 45. 6 are fitted in such a way that they can approach and separate from each other.

As shown in FIG. 3, the spacing adjustment device 5 is comprised of five cylinder devices 57 having piston rods 50 with different strokes arranged in two rows at different intervals. Each cylinder device 57 is driven by compressed air that is forced in through the supply port 54 by an air supply pipe 55 shown in FIG. Each air supply pipe 55 is provided with a control valve (not shown), and the operation of each piston rod can be switched by controlling the opening and closing of the valve.

Guide shafts 56, 56 are provided on both sides of the interval adjustment device 5.
A plate-shaped follower piece 51 is slidably fitted onto both guide shafts 56, 56, and is biased downward by springs 52, 52 secured to the tips of the guide shafts.

A pair of links 5 are provided at the center of the driven piece 51.
3 and 53 are provided with their proximal ends pivotally supported, and their distal ends are pivotally supported on respective sides of the pair of mounts 6 and 6, forming a bilaterally symmetrical toggle joint type link mechanism.

FIG. 3 shows a state in which one cylinder device 57a in the interval adjustment device 5 is operating, but all cylinder devices 57 are not operating.
The driven piece 51 is pressed against the upper end of the spacing adjustment device 5 by the bias of the spring 52. When compressed air is supplied to the cylinder device 57a through the supply port 54a, the piston rod 50a emerges from the device body and pushes up the driven piece 51 against the spring 52.
As a result, the pair of links 53, 53 are rotated about their base ends in the opening direction, and both mounting bases 6, 6 are rotated in the opening direction.
are slid along the guide rails 45, 45 of the support block 4 by an equal distance in a direction away from each other.
Further, by stopping the operation of the cylinder device 57a and operating the other piston rod 50b, it is possible to separate the two mounting bases at a different distance from that described above.

A rod pressing cylinder device 44 as shown in FIG. 4 is built inside the support block 4. A rail body 43 having a hook-shaped rail portion 47 extending in a direction perpendicular to the cylinder axis at its tip is protrudingly fixed to the upper surface of the piston 46 of the device.

As shown in FIGS. 4 and 5, the rods 40, 40 for pressing the swinging levers 76, 76 have a pressing piece 41 at the upper end, and a pushing piece 41 at the lower end in a direction perpendicular to the axis. The groove 4 is provided with an opened groove 42.
2 is fitted to the rail portion 47 of the rail body 43. Further, the bodies of both rods 40, 40 slidably pass through through holes 60, 60, which are opened in close proximity to each other in the pair of mounting bases 6, 6, respectively, as shown in FIGS. 5 and 1. The pressing piece 41 projects upward from the mounting base 6 and faces the back surface of the swing lever 76.

As shown in FIG. 4, the rod 40 can be raised by following the cylinder 46 and can
It is possible to move horizontally while maintaining the vertical posture.

As shown in FIG. 5, the lead wire cutting device 7 has a support piece 77 fixed on the mounting base 6, and the support piece has a fixed blade 70 at its upper end and a plate-shaped stopper 78 at its back. The swinging lever 76 has a cutting blade 71 at its tip and is attached to a support piece 77 at its base end, and is always urged toward the stopper 78 by a spring 74. The fixed blade 70 and the cutting blade 71 are formed into cylindrical surfaces that can be brought into close contact with each other.
has an upper lead wire insertion hole 7 whose cross section reduces downward.
2. The cutting blade 71 has a lower lead wire insertion hole 73 which communicates with the insertion hole 72 with the swing lever 76 in contact with the stopper 78. Furthermore, the lead wire cutting device 7 includes a sensor 75 for detecting when the lead wire of the electronic component passes through the insertion holes 72 and 73 of the fixed blade 70 and the cutting blade 71.
is installed opposite the lead wire transition path.

The sensors 75 of the X-Y table 1, turntable device 2, lifting cylinder device 3, rod pressing cylinder device 44, spacing adjustment device 5, and lead wire cutting and fixing device 7 are controlled by the control device 8 shown in FIG.
0, and each of the above devices is sequentially controlled by a control device.

The printed circuit board 90 is transported by a transport line 92 and positioned in front of the work clothes. X-
The Y table 1 moves the cutting and bending fixing device 8 below the insertion position of the electronic component 9 in response to a control signal from the control device 80. At this time, the cutting and bending fixing device 8 is driven by the turntable device 2.
changes direction by 90° depending on the insertion posture of the electronic component 9. Further, the spacing adjustment device 5 operates a piston rod having a stroke corresponding to the spacing between the lead wires of the electronic component 9 to be inserted, and raises the driven piece 51 against the spring 52. The distance between both mounting stands 6, 6 and the distance between both lead wire cutting devices 7, 7 is increased. At this time, the rods 40, 40 shown in FIG. 4 are also spaced apart as the mounting bases 6, 6 are spaced apart.

Next, the lifting cylinder devices 3, 3 are controlled by the control device 8.
0, the support block 4 is raised together with the spacing adjustment device 5, and the lead wire cutting and fixing devices 7, 7 are brought closer to the back surface of the printed circuit board 90.

When an operator manually or automatically inserts the lead wire 91 of the electronic component 9 into the hole at a predetermined position in the printed circuit board 90, there is a predetermined hole below the insertion position as described above. Since the cutting and bending fixing device 8 is waiting in the posture of
The lead wire 91 is connected to the fixed blade 70 as shown in FIG.
The cutting blade 71 passes through the insertion holes 72 and 73, and a sensor 75 shown in FIG. 5 detects this.

The signal from the sensor 75 is sent to the control device 80, which issues a drive command to the rod pressing cylinder device 44. By driving the cylinder device 44, both rods 40, 40 are pushed up as shown in FIG.

As a result, the base end of the lead wire 91 is pushed and bent in the direction along the lower surface of the substrate 90 within the movable range in the insertion port 72 of the fixed blade 70 by the pressure of the cutting blade 71, and then the fixed blade 70 and the cutting The unnecessary portion is cut off by the blade 71. As a result, the remaining portion of the lead wire 91 is bent along the lower surface of the substrate 90 and engaged with the substrate 90, as shown in FIG.

When the above-mentioned work is completed, the swing lever 76 and the mounting base 6 return to their original positions, and the X-Y table 1 is activated to make the lead wire cutting and bending/fixing device wait at the next electronic component mounting position. By repeating the above operations, six types of electronic components with different lead wire pitches can be attached to the printed circuit board.

The device for cutting and bending and fixing lead wires of electronic components according to the present invention has a compact structure as a whole,
Moreover, since the distance adjusting device 5 is driven by a cylinder device, it is lighter than a mechanism using a motor. In addition, since the pair of mounting bases and lead wire cutting device move an equal distance left and right around the center of gravity in the closed state, the center of gravity is always at the center position, and therefore the turntable device can be driven to rotate the entire device. Only a small amount of power is needed to move it. Furthermore, even when positioning is performed using the X-Y table, the set position can always be calculated using the center point of the device as a reference, regardless of whether the two mounts are open, making it easy to teach the control device.

Furthermore, the device of the present invention has a structure in which the fixed blade is arranged above and the cutting blade is arranged below, so that electronic parts can be attached to the printed circuit board without damaging the back side of the printed circuit board. Since electronic components can be simply inserted into the printed circuit board, there are excellent effects such as less burden on the operator and shorter working time.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the lead wire cutting and bending fixing device according to the present invention, Fig. 2 is a back view of the turntable device, and Fig. 3 is a partially cutaway front view of the spacing adjustment cylinder device during operation. , FIG. 4 is a partially broken perspective view of the rod pressing cylinder device, FIG. 5 is an exploded perspective view of the lead wire cutting device, and FIGS. 6 and 7 are side views showing the operating state of the lead wire cutting device. FIG. 8 is an explanatory diagram showing a working state using the device of the present invention. FIG. 9 is a front view of the conventional device, and FIG. 10 is a side view of the conventional device. 3... Cylinder device for lifting, 4... Support block, 5... Spacing adjustment device, 50... Piston rod, 57... Cylinder device, 6... Mounting base,
70... fixed blade, 71... cutting blade, 76... rocking lever.

Claims (1)

[Claims for Utility Model Registration] A pair of mounting bases 6, 6, each having a fixed blade 70 protruding from it, which can be moved up and down and rotated, are provided with the fixed blade 7 at the upper end thereof.
Swing levers 76, 76 each having a cutting blade 71 paired with 0 are arranged so as to be rotatable in a vertical plane,
The lead wire of the electronic component exposed on the bottom surface of the printed circuit board 90 is fitted between the fixed blade 70 and the cutting blade 71, and the unnecessary portion of the lead wire is cut by rotating the swinging levers 76, 76. In a device that fixes electronic components to a printed circuit board by bending the remaining part of the board in the direction along the printed circuit board,
Both mounts 6, 6 are disposed so as to be slidable in a horizontal plane on the support block 4 which is driven to move up and down and rotate, and each mount is connected with a link mechanism that allows the mounts to move toward or away from each other at the same time. A spacing adjustment device having a plurality of cylinder devices with different strokes is connected to the link mechanism, and the spacing between the two mounting bases is adjusted by selecting and operating the cylinder device with an appropriate stroke according to the lead wire spacing of the electronic component. A device for cutting and bending and fixing lead wires of electronic components. The spacing adjustment device 5 is installed on the side of the support block 4 with the piston rods of each cylinder device facing upward, and the link mechanism has a vertically movable driven piece 51 serving as an input section that is driven upward by each piston rod. and is urged downward by the spring 52, and the link 5 is connected to the pair that becomes the output section.
3 and 53 are combined in a V-shape in a vertical plane, and the base end is pivoted to the driven piece 51, and the tip end is pivoted to the mounting bases 6, 6, respectively, thereby forming a toggle joint. Cutting and bending fixing device according to paragraph 1.