JPS61124200A - Fixture for electronic part - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an electronic component mounting device.

More specifically, the present invention relates to an apparatus for cutting a pair of lead wires of an electronic component inserted into a mounting hole of a printed circuit board and protruding toward the back side thereof into a predetermined length, and bending them in directions facing each other.

(Prior Art) Conventionally, there are various electronic component mounting devices that automatically cut the lead wires of electronic components that are inserted into the mounting holes of a printed circuit board and protrude toward the back side to a predetermined length and bend them in directions facing each other. A number of different types have been developed, and a representative example thereof is disclosed in Japanese Patent Application Laid-Open No. 58-184793.

Specifically, a center carrier is disposed below the printed circuit board set on a work table so as to move in two directions orthogonal to each other in a plane parallel to the printed circuit board, and a piston rod is moved toward the printed circuit board. a hydraulic actuator attached to the carrier so as to be able to project a predetermined stroke and rotate at a predetermined angle with respect to the center line of the piston rod; a head table fixed to the upper end of the piston rod; a pair of cutter devices having a knife and a movable knife mounted on the head table so as to be opposed to each other and movable in the same axial direction; A pair of lead wires of an electronic component are received into cutting holes provided in each fixed knife, and a movable knife is applied to the fixed knife to cut the lead wires to a predetermined length and bend them in directions facing each other. An electronic component mounting device configured as a vine is disclosed.

(Problem to be Solved by the Invention) However, in this known mounting device, a fixed knife is fixed in order to collect the lead wires cut by the cutter device without scattering them onto the head table, etc. A lead wire insertion hole is drilled in the cutter bracket that connects to the cutting hole of the fixed knife, and a discharge pipe is connected to the insertion hole, and when both cutter devices are in operation, the air in the discharge pipe is sucked and the cut lead wire is removed. The line was being ejected to another suitable location.

However, because the front piping has a small diameter due to the structure of the device and is bent appropriately, the pipe is easily clogged and it is difficult to drain the lead wire properly at all times. Met.

Therefore, the inventors of the present invention made intensive studies from various angles to improve this point, and as a result, they created a through hole in the piston rod of the fluid pressure actuator that moves the head table up and down, and used this through hole to cut the head table. They discovered that if the lead wires are provided in such a way that they can be discharged, the scales can always discharge the lead wires well.

(Means for Solving the Problems) That is, the electronic component mounting device according to the present invention is capable of moving in two directions orthogonal to each other in a plane parallel to a printed circuit board set on a work table. a center carrier disposed below the substrate, and a fluid mounted on the carrier such that the piston rod can be projected toward the substrate by a predetermined stroke and rotated at a predetermined angle with respect to the center line of the piston rod. a pressure actuator, a head table fixed to the upper end of the piston rod, and a pair of cutters each having a fixed knife and a movable knife and mounted on the head table so as to be opposed to each other and movable in the same axial direction. a device for receiving a pair of lead wires of an electronic component inserted into the mounting hole of the board and protruding to the back side thereof into a cutting hole provided in each fixed knife, and movable with respect to the fixed knife. In the electronic component mounting device, the lead wires are cut to a predetermined length by the action of a knife and can be bent in directions facing each other, and the cut lead wires are collected and drilled into the piston rod. This device is characterized by being equipped with a lead wire discharging device that feeds the lead wire into the upper end of the through hole.

(Example) Hereinafter, to describe it more specifically based on the drawings, in FIG. 1 showing a longitudinal section of the main part of the electronic component mounting device,
1 is a center carrier, 2 is a fluid pressure actuator, 3
is a circular head table, /Ia and 4b are cutter devices.

The center carrier 1 has a carrier movement control device 5, as shown in FIG. 2, which is a view in the direction of arrow 7 in FIG.
The carrier movement control device 5 includes guide shafts 7a and 7b supported by bearings 6 mounted on the center carrier 1, and screws supported by nuts 8 mounted on the center carrier 1. Shaft 9 and guide shaft 7a
, 7b so that they cannot rotate, and a driven side carrier 11 that supports the screw shaft 9 at one end so that it can rotate, and is movable while being guided by a rail 10. , guide shaft 7a.

The other end is supported so that the screw shaft 7b can be rotated, and the other end is supported so that the screw shaft 9 can be rotated, and a nut for supporting the screw shaft 12 is attached and moved while being guided by the rail 13. a drive-side carrier 14 provided so as to be able to rotate; a motor 15 fixed to this carrier 14 via a suitable bracket; a shaft coupling mechanism 16 that connects the output shaft of this motor 15 and the screw shaft 9; Screw shaft 1
2 and a shaft coupling mechanism 18 that connects the output shaft of the motor 17.

The carrier movement control device 5 configured in this way is mounted inside the box-shaped work table 19 shown in FIG. The work table 19 is supported by a bearing that rotatably supports the other end of the work table 19.
and the rail 10.13 is likewise secured to said bottom frame.

Therefore, by driving the motors 15 and 17, the Xl-X2 direction and Y
The center carrier 1 can be moved in two directions: l-Y2 directions.

In this case, the motor 17 drives the center carrier 1 along with both carriers 11.14 to
is moved in the X2 direction, and Yl is driven by the motor 15.
-Moved in the Y2 direction.

Next, the fluid pressure actuator 2 is moved to the center carrier 1.
180 to the housing 31 attached via the bearing 30 to the
It is fixed by two bolts 32 that are arranged in a perfect positional relationship, and therefore, the housing 31 and the piston rod 34 are fixed together with respect to the center line C-C of the piston rod 34 in which the through hole 33 is bored. can be rotated.

The piston rod 34 can be projected toward the printed circuit board 20 (upward) or away from the printed circuit board 20 (downward) by supplying pressurized air into the cylinder 35. The gap 3 formed between the piston head 36 and the cylinder 7 flange 37 is
Pressurized air is supplied into the chamber 8 from a nozzle (not shown).

Also, a stopper 39 is provided at the lower end of the piston rod 34.
and the lock nut 40 is screwed on, and the stopper 39
A buffer plate 41 is fixed to.

Next, the head table 3 is fixed by a bolt 52 to the upper end of a slide shaft 51 supported so as to be able to move up and down by a bearing 50 mounted on the center carrier 1, and to the upper end of the piston rod 34. It is fixed to the shaft 1 by a ring 53, and is moved downward in parallel to the printed circuit board 20 by controlling the protrusion of the piston rod 34.

Note that four slide shafts 51 are mounted in a positional relationship of 90 degrees, and the head table 3 is fixed so as not to block the hole 33 of the piston rod 34.

Next, the cutter devices 4a, 4b are mounted on the head table 3 by bolts 60, as shown in FIG. 4, which is a right side view of FIG. 1, and FIG. 5, which is a top view of FIG. A pair of fixed cutter stands 61a, 61b
and are arranged opposite to each other on the Xl-X2 axis.

Specifically, the cutter devices i & 4a have sliding bearing mechanisms 62a, 62b at the upper ends of cutter stands 61a, 61b.
A cutter base 63a engaged through the cutter base 63a, a cutter bracket 65a fixed to the base 63a with bolts 64a, and an air cylinder type fluid pressure actuator fixed to the bracket 65a with bolts 66a. 67a, and a cutter rod 70 screwed onto the piston rod 68a of the actuator 67a and fixed by a nut 69a.
a, a movable cutter 71a engaged with the cutter rod 70a, a fixed cutter 728 fixed to the cutter bracket 65a, and a cutter guide 73a.

Note that the fixed cutter 72a has a cutting hole 74a penetrated at its tip, as shown enlarged in FIG. 6, and in FIG. As shown, the fixed cutter 728 and the cutter guide 73a are fixed to the cutter bracket 65a by two bolts 75a, and the movable cutter 7
1a and cutter rod 70a are movable cutter 718
The heads 77a of the cutter rods 70a are inserted into the locking recesses 76a provided in the cutter rods C and are engaged with each other.

On the other hand, the cutter device 4b is also provided in the same manner as the cutter device 4a described above.

Therefore, according to both the cutter devices 4a and 4b, as shown in FIG. Fixed cutter 728.72
Cutting hole 74a of b.

74b, and the movable cutters 71a, 7
ib can be applied to cut it into a predetermined length and bend it in directions facing each other.

That is, the center carrier 1 is moved by the carrier movement control device 5, and the center carrier 1 is moved so that the center line C-C of the piston rod 34 is located at the midpoint between the pair of mounting holes 78 bored in the printed circuit board 20. The carrier 1 is positioned, and then the piston rod 34 of the fluid pressure actuator 2 is projected upward toward the printed circuit board 20, and the head table 3 is raised accordingly to cut the cutting holes 74a of the cutter devices 4a, 4b. Lead wire 80 of electronic component 79 is received into 74b.

Note that when the lead wires 80 are inserted into the cutting holes 74a and 74b in this way, the fixed cutter 72
The tips of the actuators 67a and 72b are located at a position suitable for cutting and bending, that is, at a predetermined position below the printed circuit board 20, and therefore, the fluid pressure actuators 67a and 6
When the piston rods 68a and 68b of 7b are protruded,
Accordingly, the movable cutters 718, 71b can slide on the fixed cutters 72a, 72b toward the printed circuit board 20, cut the lead wire 80, and bend it in the direction facing each other.

In FIG. 8, both cutter devices 4a,
4b, the electronic components 79 are shown bent in directions facing each other.

In this case, the pitch between the cutting holes 74a of one cutter device 4a and the cutting holes 74b of the other cutter device 514b is adjusted to be the same as the pitch between the lead wires 80 of the electronic component 79. Each cutting hole 74
Lead wires 80 are received within a, 74b, and this pitch adjustment is performed by a cutter base movement control device 90.

The cutter base movement control device 90 includes a pivot bracket 92 fixed to the head table 3 by bolts 91, as shown in FIG. 9, which is a view in the direction of arrow W in FIGS. and a stepping motor 9 fixed to this bracket 92 with bolts (not shown).
3, a screw shaft 97 whose one end is connected to the output shaft of the motor 93 via a shaft coupling 94, and whose other end is supported by a bearing 96 attached to the bracket 93; nuts 95a, 9 engaged with
5b.

Note that the nut 95a and the threaded shaft 97 are engaged by a left-hand thread, and the nut 95b and the threaded shaft 97 are engaged by a right-hand thread, and the cutter base a3a
, 63b, nuts 95a, 9 fitted into the nut support portions
5b is fixed so as not to rotate by seven flanges 99a and 99b which are fixed to the end face of the support part by bolts 98.

For this reason, the stepping motor 93 is driven and the screw shaft 97 is
By rotating the nut 95a.

95b as well as the cutter bases 53a and 63b.
Both cutter devices 4a can be moved in the X2 direction.
, 4b, the pitch between the cutting holes 748, 74b can be adjusted to a predetermined value.

That is, when the screw shaft 97 is rotated clockwise, both cutter bases 63a and 63b are moved closer to each other,
On the other hand, when rotated to the left, both cutter bases 63a, 63
b are moved and adjusted so as to move away from each other, and the movement path IIIilJ is controlled by counting pulses emitted as the stepping motor 93 is driven.

In FIG. 5, the cutter base 63a is
is moved to the maximum in the X1 direction, and the cutter base 6
3b is shown moved to the maximum in the X2 direction.

Although not shown, the cutting hole 74 is formed as described above.
In adjusting the pitch between a and 74b, an overrun prevention device is further provided to prevent troubles such as the cutter bases 63a and 63b coming abnormally close to each other and colliding with each other.

When the proximity switch mounted on the other cutter base 63b detects the detection bin mounted on one cutter base 63a, the stepping motor 9
The drive of No. 3 is stopped.

Next, Yl perpendicular to the Xl-X2 direction in the same plane
In the case where the pair of lead wires 80 of the electronic component 79 arranged in the -Y2 direction are cut and bent in directions facing each other, FIGS.
Table rotation control device 100 shown in FIG.
Accordingly, both cutter devices 4a and 4b are positioned in the Yl-Y2 direction.

This table rotation control device 100 includes a bracket 102 fixed to a center carrier 1 with bolts 101.
, a stopper 103 screwed onto the bracket 102, and a bolt (not shown) that connects the bracket 102.
an air cylinder type fluid pressure actuator 104 fixed to the flange 105; and an arm 106 pivotally supported by the flange 105.
and the piston rod 107 of the actuator 104, a bracket 110 fixed to the center carrier 1 with a bolt 109, and a stopper 111 screwed to the bracket 110.
and an attachment 113 fixed to the seven flange 105 with bolts 112.

Note that the 7 langes 105 are fixed to the housing 31 with bolts 114, as shown in FIG.

Therefore, by moving the piston rod 107 of the fluid pressure actuator 104 in and out, the housing 31 can be rotated.
4 can be rotated with respect to the center line of the cutter mounts [4a, 4a,
4b can be positioned in the Xl-X2 direction or the Yl-Y2 direction.

At this time, when the piston rod 107 of the fluid pressure actuator 104 is projected, the attachment 113 is rotated to the left in FIG. stand out. Further, when the piston rod 107 of the fluid pressure actuator 104 is depressed, the attachment 113 is rotated to the right together with the 7 langes 105, and the piston rod 107 is depressed until it abuts against the stopper 111.

In this way, as shown in FIG. 10, when the attachment 113 is in contact with the stopper 103, the cutting holes 74a and 74b of both cutter devices 4a and 4b are positioned in the Xl-X2 direction. , and is positioned in the Yl-Y2 direction when in contact with the stopper 111.

Although not described in detail, the Yl-Y2
The lead wires 80 arranged in the same direction can also be cut and bent in the directions facing each other.
゛In this way, according to this device, both cutter devices 4a and 4b can be aligned in the Xl-X2 direction or Yl-Y2 direction, and therefore, after setting the printed circuit board 20 on the work table 1゛9, Electronic components 79 can be attached one after another without moving this.

The lead wires cut by both cutter devices 4a and 4b are connected to a pair of screen devices 120a and 120b shown in FIG. 5 and a shooter 121 and a skirt 122a and 122b shown in FIG.
The through hole 3 collected by the lead wire ejecting device 123 composed of etc. and drilled in the piston rod 34
3 and is discharged.

Specifically, as shown in FIG. 11, which is a front view thereof, and FIG. 12, which is a plan view of this figure, this lead wire discharge device 123 has two screen devices 120a,
120b, screens 124a and 124b made of a flexible antistatic sheet material such as a glass sheet are installed between both cutter devices 4a and 4b.

Note that both screen devices 120a and 120b have the same configuration, so to explain only one screen device @120a in detail, one end of the screen 124a is attached to the cutter bracket 65b of the cutter device 4b with a machine screw 1.
25a, and the other end is supported by a take-up and unwind mechanism 1288, the detailed structure of which is shown in FIG.

This take-up and unwind mechanism 128a fixes the case 130a to the cutter bracket 65a of the cutter device 4a with bolts 131a, and connects the shaft 1 with the first cap 132a and housing 133a screwed onto the case 130a.
34a is rotatably supported, and this shaft 13
One end of the screen 124a wrapped around the housing 133a is fixed to the shaft 134a with a machine screw 136a so as to firmly nip one end of the screen 124a with the pressing plate 135a, and then one end of the spiral spring 137a inserted into the housing 133a is fixed to the shaft 134a. The housing 133a is inserted into and locked into a slit provided at the lower end of the housing 133a, and the other end is inserted into and locked into a slit provided in the housing 133a. In addition,
138a is a second cap screwed onto the housing 133a.

In this way, since the winding and unwinding mechanisms 128a and 128b are installed, the screen 124 is rotated by rotating the shafts 134a and 134b according to the movement of the cutter devices 1f4a and 4b.
a, 124b can be automatically wound up or unwound, so that the screens 124a, 124b
Both cutter mounts [4a
, 4b can be prevented from scattering outside the apparatus, and the collected lead wires can be stored in the shooter 121 disposed below.

Note that the shooter 121 is a cutter device 4a.

4b is fixed to the head table 3 by bolts 140 shown in FIG. 4 so as not to interfere with the movement of the head table 3, and its inlet port 141 is bored into the piston rod 34 as shown in FIG. It is connected to a through hole 33 provided therein.

Further, the skirt 122a has a cutter bracket 65a.
The skirt 122b is also fixed to the cutter bracket 65b by machine screws (not shown) to prevent the cut lead wire from passing through the opening 143a of the cutter bracket 65a and falling. This prevents the lead wire from passing through the opening 143b of the cutter bracket 65b and falling.

Furthermore, the through hole 33 of the piston rod 34 is provided with a size that prevents the lead wire from clogging, and the lead wire discharged from the hole 33 is detachably attached to the bottom frame of the work table 19. It is stored in a tray (not shown) and collected.

As described above, since this mounting device is provided with the lead wire discharging device 123, the cut lead wires are prevented from scattering, are almost completely collected, and are transferred to the piston rod 34.
It can be discharged using the through hole 33, and therefore it can always be discharged well.

Note that the work table 19 shown in FIG.
51, so that it can be adjusted to an appropriate height and tilted to an appropriate angle to make it easier for the operator to work.

The printed circuit board 20 is placed on the work table 19 by the worker.
The center carrier 1 is set at a predetermined position, but in order to attach the electronic component 79 to the board 20, the center carrier 1 is moved to a predetermined position by the carrier movement control device 5. On this occasion,
The head table 3 has been lowered, and when the center carrier 1 is brought to a predetermined position, the fluid pressure actuator 2 is activated and the head table 3 is raised. Also, while the center carrier 1 is being moved, the head table 3
rotation control and movement control of the cutter devices 4a, 4b are performed.

With the cutting holes 74a and 74b of both cutter devices 4a and 4b positioned in this manner with respect to the mounting hole 78 of the printed circuit board 20, when the head table 3 is raised, the state shown in FIG. Tube 154a
, 154b toward the mounting hole 78 of the printed circuit board 20, the worker confirms this, and inserts the lead wire 80 of the selected predetermined electronic component 79 into the specified mounting hole 78. .

Next, when the operating pedal 153 is pushed with a foot, the movable cutters 71a, 71b of the cutter devices 4a, 4b slide on the fixed cutters 72a, 72b toward the printed circuit board 20, cutting and bending the lead wire 80.

After cutting and bending, the head table 3
is lowered and the center carrier 1 is moved to the next cutting and bending position.

Thereafter, electronic components 79 can be attached to the printed circuit board 20 one after another in the same manner.

After the printed circuit board 20 is set at a predetermined position on the work table 19, it is fixed at the same place until all installation is completed and is not moved during the work.

Further, the tubes 154a, 154b are fixed to the cutter brackets 65a, 65b by suitable means, and optical fibers are introduced into these, and the optical fibers are introduced into the cutter brackets 65a, 65b.
One end of AH is connected to a light emitting device (not shown).

Note that the lead wire discharge device 123 includes a skirt 122a,
122b can be omitted, but if these are attached, the scattering of the lead wires can be prevented and the lead wires can be collected more completely.

(Effects of the Invention) As described above, in this mounting device, the lead wire discharging device 123 collects the cut lead wires and sends them to the upper end opening of the through hole 33 formed in the piston rod 34.
Since the lead wire is equipped with a lead wire, it is possible to always discharge the lead wire properly while preventing the lead wire from scattering.

In addition, the lead wire discharging device 123 is equipped with at least screens 124a and 124 for preventing the cut lead wires from scattering.
4b is wound up and unwound according to the movement of the cutter devices 14a, 4b. Since the lead wire feeding shooter 121 is positioned below the screens 124a and 124b and is fixed on the head table 3 so as to be connected to the lead wires, the effect of preventing the cut lead wires from scattering is even more remarkable. At the same time, the collected lead wires can be better discharged.

[Brief explanation of the drawing]

1 to 13 show embodiments of the present invention, FIG. 1 is a longitudinal sectional view of the main parts of the electronic component mounting device, and FIG.
3 is a front view showing the schematic structure of the work table, FIG. 4 is a right side view of FIG. 1, FIG. 5 is a plan view of FIG. 1, and FIG. 6 is a lead by the cutter device 4a. A vertical cross-sectional view showing the line cutting and bending 1y aspect, FIG. 7 is a view taken along the V arrow in FIG. 6,
FIG. 8 is a vertical cross-sectional view showing the electronic component 79 attached to the printed circuit board, FIG. 9 is a view along arrow W in FIG. 5, and FIG.
The figure is a partially enlarged view of FIG. 2, FIG. 11 is a front view of the lead wire discharge device 123, FIG. 12 is a plan view of FIG. 11, and FIG.
The figure is a longitudinal sectional view of the take-up and unwind mechanism 128a. 1...Center carrier, 2...Fluid pressure actuator]■
- data, 3... head table, 4a and 4b... cutter device, 5... carrier movement control device, 19...
Work table, 20... printed circuit board, 33... through hole. 34... Piston rod, 71a and 71b... Movable knife, 72a and 72b... Fixed knife, 79...
Electronic 27 1 part, 80...Lead wire, 74a and 74b...
Cutting hole, 78... Mounting hole, 90... Cutter base movement control device, 100... Table rotation control device, 1
20a and 120b...screen device, 121...
Lead wire feeding shooter-9123...Lead wire discharge device, 124a and 124b...Screen, 128
a and 128b... Winding and unwinding mechanism Applicant: Toray Engineering Co., Ltd. Figure 6, Figure 7! IA No. 811J

Claims (2)

[Claims] (1) A center carrier disposed below the printed circuit board set on the work table so that it can move in two mutually perpendicular directions in a plane parallel to the printed circuit board, and a piston rod toward the printed circuit board. a hydraulic actuator attached to the carrier so as to be able to project a predetermined stroke and rotate at a predetermined angle with respect to the center line of the piston rod; a head table fixed to the upper end of the piston rod; a pair of cutter devices having a knife and a movable knife mounted on the head table so as to be opposed to each other and movable in the same axial direction; A pair of lead wires of an electronic component are received into cutting holes provided in each fixed knife, and a movable knife is applied to the fixed knife to cut the lead wires to a predetermined length and bend them in directions facing each other. The electronic component mounting device is equipped with a lead wire discharging device that collects cut lead wires and sends them to the upper end of a through hole formed in the piston rod. Parts mounting device. (2) The lead wire discharging device is at least a pair of screen devices installed between both cutter devices so that a screen for preventing cut lead wires from scattering can be wound up and unwound as the cutter devices move. and a lead wire feed shooter located below the screen and fixed on the head table so as to connect the feed port to the upper end port of the through hole of the piston rod. The electronic component mounting device described in scope (1).