JPS6035817B2 - Electronic component positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is designed to allow parallel lead type electronic components to be supplied into an automatic electronic component insertion machine without having a negative effect on the component element, and to prevent the lead wires from being bent, expanded, etc. The present invention relates to a positioning device for electronic components that can be automatically inserted one after another into lead wire insertion holes of a printed circuit board without causing any particular deformation.

Here, a parallel lead type electronic component refers to a component used in an electronic circuit, such as a capacitor or a resistor, whose lead wires are drawn out in parallel in the same direction. refers to a plurality of completed electronic component groups arranged side by side and fixed on a holding band.

In recent years, in the electronic components industry, attempts have been made to automatically insert electronic components into the lead wire insertion holes of printed circuit boards using automatic insertion machines. For example, by bending the lead wires of coaxial lead type electronic components one stroke, A lead wire portion is formed, and then the parallel lead wire portion is inserted into a lead wire insertion hole of a printed circuit board while applying force.

Although automatic insertion devices for coaxial lead type thunderbolt components have been developed relatively early, there has been no development of a means for automatically inserting parallel lead type electronic components into the lead wire insertion holes of printed circuit boards as they are. The reality is that the technology was not successful. Therefore, in an automatic electronic component insertion machine, it is necessary to position each electronic component to be inserted with extremely high precision.

In other words, after accurately positioning each electronic component in an automatic insertion machine, the lead wires are cut, gripped, and inserted into the printed circuit board at high speed, so if the positioning accuracy is poor, incorrect cutting and gripping may occur. This causes inaccuracy and incorrect insertion, which in turn causes deformation of lead wires and damage to component elements, and is a major hindrance to automation and speeding up insertion. In order to determine this new problem, the present inventors have conducted research from various viewpoints over many years.

For example, the means for holding a group of electronic components should have the function of an extremely high-precision jig, the means for positioning each electronic component should be provided to correspond to each electronic component in the group, and the positioning The means must have high-precision positioning, functions that can withstand high-speed automatic insertion, and scales that ensure the safety of each electronic component without deforming or damaging it during high-speed automatic insertion. From these points of view, in the early stages of research, a pair of slits are provided for each electronic component along the longitudinal direction of a long holding band in parallel, and the electronic component is inserted through the lead wire through the pair of slits. Attempts have also been made to hold the electronic parts and place square hexes for positioning on the holding band to correspond to each electronic component, but with such a configuration, when feeding to a high-speed automatic insertion machine, the slits and lead wires Because there is a gap between
Both the longitudinal direction (hereinafter referred to as the X direction) and the width direction (
Hereinafter, this will be referred to as the Y direction. ), which makes it impossible to securely hold and position each electronic component. Not only does this cause errors in the pitch and parallelism of each electronic component, but also the distance between each electronic component and the square hole for positioning. The size also had a large error, and it was impossible to position each electronic component with high precision using this square hole in an automatic insertion machine.
Furthermore, if the positioning hole is a square hole, it is not easy to maintain the accuracy of the hole itself, and when centering is performed using the positioning pin provided in the automatic insertion machine, the square hole itself has directionality. This makes the operation more difficult,
In addition, it may get caught when engaging or disengaging from the pin, resulting in a lack of smooth positioning operation, and in terms of strength, it tends to break at the gap, making it completely unusable as a device for feeding into automatic insertion machines. It was something. Furthermore, if only one retaining band is provided with a square or round hole, it is extremely susceptible to damage and cannot withstand high-precision positioning and high-speed insertion.
The present invention has been completed as a result of such research over many years, and includes a retaining band of the largest size that is exposed, a lead wire portion perpendicular to the longitudinal direction of the retaining band, and an electronic component. A plurality of parallel lead type electronic components are sent out at equal intervals with the elements protruding from the green part of the retaining strip, and the electronic components are fixed onto the retaining strip with each lead wire part. In order to do this, the longest adhesive tape, which has a width slightly narrower than the aforementioned self-retaining band, is bonded onto the holding band with the lead wire portion of each electronic component in between.

and an adhesive tape for each electronic component, which is provided at equal intervals along the longitudinal center of the retaining strip and between the lead wire portions of adjacent electronic components, penetrating through the retaining strip and the adhesive tape. An electronic component automatic insertion machine comprising electronic components consisting of a circular hole for positioning, a cylindrical portion having an outer diameter slightly smaller than the inner diameter of the circular hole for positioning the electronic component, and a guide slope at the tip thereof. The present invention relates to a positioning device for electronic components, which is equipped with a positioning pin that moves in and out of a positioning circular hole in the vertical direction at the processing position of the device for processing electronic components by sequentially transporting them to a positioning layer. DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic component positioning device according to the present invention will be described below based on one embodiment thereof.

An embodiment of a capacitor as an example of an electronic component will be described with reference to the drawings. As shown in FIG. The lead wires 1 of each electronic component 2 are arranged at equal intervals so as to expose the elongated retaining band 3 and at least the twill portion 5 of the retaining band 3 on the electronic component element 4 side. ．． The electronic component elements 4 are fixed in series in parallel with each other in a state in which the electronic component elements 4 are protruded from the edge group 5 of the holding band 3 by being sandwiched between the narrowest width adhesive tape 6 and the holding band 3. A circular hole 7 for positioning each electronic component 2 passing through the holding band 3 and the adhesive tape 6 is located between adjacent lead wires 1.
They are provided at equal intervals in the longitudinal direction of the holding band 3 along the approximate center of the width direction of the holding band 3 so as to correspond to each electronic component 2 . In particular, the round hole 7 is punched at the same time as or after the lead wire 1 is sandwiched and fixed on the holding band 3 with the adhesive tape 6, and the relative position of the lead wire 1 and the round hole 7 are fixed. The retaining band 3 and the adhesive tape 6 are perforated at the same time while maintaining a very strict mutual pitch. In this way, by using the holding band 3 and the adhesive tape 6, the lead wire 1 part is perpendicular to the longitudinal direction of the holding body 3.
An electronic component chain 10 according to the present invention is configured by fixing a plurality of electronic components 2 in series and forming positioning round holes 7 corresponding to each electronic component 2. As shown in the figure, the electronic components 10 configured in this manner are wound to a convenient length, for example, every 40 skins, to form a reel, and stored in a package 8, after which the electronic components are automatically inserted. loaded into the machine. The retaining band 3 and the adhesive tape 6 are selected from paper or synthetic resin, which is flexible, and the adhesive applied to the adhesive tape 6 allows the electronic component transport 10 to run at high speed in the automatic insertion machine. It is preferable to select a material that will not melt even if the frictional heat generated in such a case is applied.

Then, the electronic components are transported from the package 8 loaded in an electronic component insertion machine, etc. to one river via a feed roller, a feed pin, a positioning pin that also serves as a feed, etc., which is a process of cutting and separating the electronic components into individual electronic components, and lead wires. Electronic components are sequentially transferred to processing positions such as cutting the tip, and at such processing positions, electronic components are accurately positioned and set using circular positioning holes and positioning pins that are inserted into and removed from the holes.

Next, as an example of a positioning pin, we will explain a positioning pin P at a processing position such as a cutting and separation process in which each electronic component is separated from the electronic component transport in an automatic insertion machine.
As shown in FIG. 3, the positioning pin P has a cylindrical part P having an outer diameter slightly smaller than the inner diameter of the positioning round hole 7 of each electronic component, and the positioning pin is inserted into the round hole 7 at its tip. An inclined surface P2 is formed which engages with the outer edge of the hole to guide the electronic components or electronic components to the pin position.

This positioning pin P is inserted into the round hole 7 of the electronic component carrier 10 and moved in the X direction by a pitch to accurately position it at a processing position during the process of cutting and separating electronic components as one electronic component. Then, it moves vertically, is inserted from the round hole, is returned by a pitch in the x direction, and is again vertically suspended and inserted into the round hole, repeating the rectangular movement. Now, a specific example of an automatic insertion machine to which the device of the present invention configured as described above is applied will be described below.

As an example of the automatic insertion machine is shown in FIG. 4, the automatic insertion machine is provided with an insertion mechanism 11, a package holding board 12, and an NC panel (not shown).

The package holding board 12 has an electronic component series 1 according to the present invention.
A plurality of the packages 8 each rotatably containing a coil or a coil are sent out, and the electronic components 10 pulled out from the packages 8 are arranged in parallel via a feed roller 13 and guided to an insertion mechanism 11. Each package 8 accommodates different types of electronic components 10 depending on the program. As shown in FIG. 5, the feed roller 13 is a sprocket wheel, which engages with the positioning round hole 7 provided in the electronic component carrier and rotates the feed roller 13 intermittently to a predetermined position. The electronic components 10 are conveyed while being positioned one pitch at a time with high accuracy.
The insertion mechanism 11 includes an electronic component supply section 14, an electronic component transfer section 15, an electronic component insertion section 16, and an x-Y table section 17.
It consists of. The electronic component supply section 14 has a receiving shelf section 18.
As shown in FIG. 6, for example, as shown in FIG. is set accurately. Next, a predetermined electronic component 2a is selected from among the selected electronic component parts 10a.
As shown in FIG. 7, the positioning pin 22 (corresponding to the positioning pin P in FIG. 3) is inserted into the positioning round hole 7, and the electronic component is positioned accurately by being transferred to the pitch in the x direction. While being held down by the bait 23, the holding band 3 and the bushing tape 6 fragments are cut and separated using the cutter 24 into one electronic component 2 each, as shown in FIG. Then, as shown in FIGS. 9 and 10, the transfer section 19 is held by a piece 25 that vertically moves up and down, and at a predetermined delivery position below the transfer section 19, it is transferred to the transfer section for the next process. 15 electronic component chucks 26 are carried out.

Even in this delivery position, the electronic component series piece 10 holding the electronic component 2 as shown in FIGS. 9 and 10
The position of b is accurately determined, and the transfer to the chuck 26 is performed reliably and smoothly.

That is, when the piece 25 moving up and down the transfer section 19 descends to the above-mentioned delivery position, the positioning round hole 7 of the electronic component serialization piece 10b is centered by the positioning pin 301 with a sharp tip, and the center of the round hole 7 is centered at a predetermined position. The position of the piece 10b is accurately regulated, and the direction of the piece 10b in the horizontal plane is controlled by the push plate 31, and the movement in the vertical direction is suppressed by the lever 3.
2, the chuck 26 rises and the electronic component 2 is placed between the movable jaw 27 and the fixed jaw 28.
The lead wire 1 of the terminal is clamped and held. As described above, since the position of the electronic component series piece 10b is accurately held by the positioning pin 30, the push plate 31, and the holding lever 32, it can be delivered to the chuck 26 with one part of its lead wire reliably and smoothly. I can do it. In particular, in order to center the electronic component serial mounting piece 10b from the positioning pin 30' as in this case, it is essential for smooth operation that the hole shape be a round hole that can be centered from any direction. With other shapes, a smooth positioning effect cannot be expected. By making such a hole into a round hole 7 and by setting the relative position between the round hole 7 and each electronic component 2 particularly strictly, centering can be performed easily as shown in FIGS. 9 and 10 above. This allows for highly accurate positioning. In the electronic component series 10' according to the present invention configured to be supplied into an automatic insertion machine in this way, each electronic component 2 has its lead wire 1 parallel to the holding band 3 and the adhesive tape 6. After being clamped and firmly fixed, each electronic component 2 is not allowed to move relative to the retaining band 3, and the position relative to the retaining band 3 and the relative position of the electronic components 2 to each other (pitch, parallelism, etc.) ) is maintained accurately, and the relative position between the positioning round hole 7 and each electronic component 2 is also maintained extremely strictly as described above, so that the position of the round hole 7 and the present invention can be maintained in any process in the automatic insertion machine. With the positioning pin P according to the invention, any required electronic component 2 can be accurately positioned and a reliable insertion operation can be performed.

By making the positioning hole into a round hole 7, it will not cause damage and reduce accuracy like the corners of a square hole, and has great strength, and the accuracy of the round hole 7 itself and the accuracy of the automatic insertion machine. It is also easy to obtain the precision of the pins provided at various locations.

In addition, since the pin has a guide slope, even if the retaining band 3 deviates slightly in the 0x direction or the Y direction when inserted into the round hole, it is centered by the arc edge of the round hole 7 and always returns to the center. Misalignment in the Y direction can be prevented, and after the pin is inserted into the round hole, the cylindrical part of the pin engages with the round hole in just the right amount, so there is no risk of misalignment, and positioning within the automatic insertion machine is easy. This can be done with extremely high precision. In addition, since the round hole 7 is provided through the holding band 3 and the adhesive tape 6, it has sufficient strength, and as explained in the above example, it is repeatedly contacted with the pin for determining the position 0 layer in the automatic insertion machine. It does not cause damage or deformation even if it comes in contact with the product, and maintains high accuracy until insertion.

Furthermore, since the round hole 7 is provided along the approximate center of the width of the holding band 3, the electronic component series 10 is pulled evenly in the feeding direction during high-speed transfer in an automatic insertion machine, and is prevented from shifting from side to side or meandering. This can be accurately prevented.

In addition, by making the width of the adhesive tape 6 slightly narrower than the width of the holding band 3, the adhesive applied to the adhesive tape 6 will not be adversely affected when the electronic component series 10 runs at high speed in the automatic insertion machine. It is also possible to detect the electrical characteristics of each electronic component 2 in the green portion of the holding band 3 to which the adhesive tape 6 is not attached.

Note that the portion of the lead wire 1 which is fixed by the holding band 3 and the adhesive tape 6 is cut and discarded before the electronic component 2 is inserted into the printed circuit board. Furthermore, even when the electronic components 2 are separated one by one from the electronic component carrier 10 in the automatic insertion machine as described above, the holding band 3 and the adhesive tape 6 are cut at the intermediate position between the lead wires 1 of adjacent electronic components 2. Once the electronic component series piece 10b is separated, the distance between the parallel lead wires 1 of each electronic component 2 is maintained until the lead wire 1 between the holding band 3 and the electronic component element 4 is gripped by the chuck 26 in the next step. Moreover, since the round hole 7 is provided in the middle of the adjacent lead wires 1 and the relative position with each corresponding electronic component 2 is maintained extremely strictly, the holding band 3 and Any single electronic component 2 having a piece of adhesive tape 6 can be positioned reliably and with high precision by using the positioning circular hole 7 and the positioning pin. In addition, since the electronic components 10 consisting of the holding band 3, adhesive tape 6, and positioning round hole 7 as described above can be accurately positioned at each processing position in the insertion machine using the positioning pins, the position and spacing of the lead wires 1 can be ensured. It has become possible to insert each electronic component 2 at high speed using an automatic insertion machine while maintaining the same.

As described above, according to the present invention, it is possible to achieve a great effect in automating and labor-saving the work of automatically inserting parallel lead type electronic components into printed circuit boards, which has been difficult to do.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of electronic components according to the present invention, FIG. 2 is a sectional view taken along line 1-1, and FIG. 3 is a front view showing an embodiment of a positioning pin according to the present invention. It is a diagram. 4 to 10 are explanatory diagrams showing specific examples of an automatic electronic component insertion machine to which the device of the present invention is applied. 1...
・Lead wire, 2... Electronic component, 3... Holding band, 4... Electronic component element, 5... Edge, 6
...Adhesive tape, 7...Round hole, 8...
...Package, P...Positioning pin, 10.
...Electronic components, 11...Insertion mechanism, 1
2...Package holding board, 13...Positioning and feeding loaf. Figure 2 Figure 3 Figure 4 Figure 1 Figure 9 Figure 10 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1 a. A flexible elongated holding band, and b. The lead wire portion is perpendicular to the longitudinal direction of the holding band, and the electronic component elements are arranged at equal intervals with the electronic component elements protruding from the edge of the holding band. a plurality of parallel lead type electronic components placed on the holding band; a long adhesive tape adhered onto the retaining band and having a width slightly narrower than that of the retaining band; and d. leads of electronic components adjacent to each other at regular intervals along a substantially central portion of the retaining band in the longitudinal direction; A parallel lead type electronic component chain consisting of a circular hole for positioning each electronic component, which is provided in the middle of the wire part by penetrating the holding band and the adhesive tape; e. It has a cylindrical part with an outer diameter slightly smaller than the inner diameter of the hole and a guide slope at its tip, and is used for positioning at the processing position of equipment such as automatic electronic parts insertion machines that sequentially transfer and process electronic parts to a fixed position. A positioning device for electronic components, comprising a positioning pin that moves vertically into and out of a round hole.