JP2002361587A - Nipping device for electronic parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost nipping device for electronic component parts capable of accurately and certainly nipping electronic component parts having different widths. SOLUTION: The nipping device for electronic component parts includes a stopper 12 and a stationary nipping piece 14 which are formed separately, wherein the stopper 12 is attached to the nipping piece 14 in such a way as movable within a certain specified range in the protruding direction and capable of being retained at any desired length of protrusion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component holding device provided on a mounting head of an electronic component mounting machine for mounting electronic components on a substrate.

[0002]

2. Description of the Related Art Conventionally, there has been known an electronic component holding apparatus 100 as shown in FIG.

As shown in FIG. 6, the electronic component clamping device 100 is mounted on a mounting head 106 of an electronic component mounting machine 104 for mounting electronic components on a substrate 102, and is movable in XYZ directions and Z direction. Is provided on a head shaft 101 rotatable around the axis.

[0004] The electronic component holding device 100 is fixedly supported by the holding piece supporting member 108 and the holding piece supporting member 108.
A fixed holding piece 110 whose tip 110A protrudes downward;
It is swingably supported by the holding piece supporting member 108, and the tip 1
12A protrudes downward, and the distal end portion 112A is provided on the movable holding piece 112 and the fixed holding piece 110 which are freely movable toward and away from the front end portion 110A of the fixed holding piece 110,
And a stopper 114 protruding in the direction of the movable holding piece 112 above the distal end portion 110A of the fixed holding piece 110. The fixed holding piece 110 and the movable The electronic components can be freely held and released by the tip portions 110A and 112A of the holding piece 112.

[0005] The holding piece supporting member 108 is a fixed holding piece 11.
0 and a stopper 114, and are slidably supported by a holder 116 within a certain range in the vertical direction.
The holding piece supporting member 108 is urged downward by the compression coil spring 118 and is normally held at the lower end position.

The movable holding piece 112 is provided with a horizontal pin 12.
The support member 108 is supported by the holding piece supporting member 108 through the pin 0 and swings in conjunction with the vertical displacement of the piston 122.

The piston 122 is slidably supported by a holder 116 in a certain range in the vertical direction, and is urged upward by a compression coil spring 124. By supplying or shutting off air pressure from the mounting head 106 side to the upper end side of the piston 122, the piston 122 moves up and down.

[0008] From the mounting head 106 to the electronic component clamping device 1
When the air is supplied to the movable holding piece 11, the piston 122 descends against the urging force of the compression coil spring 124, and the movable holding piece 112 swings in conjunction with the downward movement.
2 is the tip 110 of the fixed holding piece 110
Move away from A.

In this state, the electronic component holding device 100 is lowered and approached from above to the pickup portion 126A of the electronic component supply device 126, and the lower end surface of the stopper 114 is brought into contact with the upper end of the electronic component.

At this time, the holding member supporting member 108 slides upward against the urging force of the compression coil spring 118, thereby absorbing the impact accompanying the contact and protecting the electronic components. .

Next, from the mounting head 106, the piston 12
When the supply of air to the upper end of 2 is cut off, and (in some cases) further negative pressure is supplied, the piston 122 slides upward,
The movable holding piece 112 swings. As a result, the electronic component is moved between the tip 110A of the fixed holding piece 110 and the movable holding piece 112.
Between the front end 112A and the front end 112A.

The held electronic component is transported to a predetermined mounting position on the substrate 102, and when air is supplied from the mounting head 106 to the electronic component holding device 100, the movable holding piece 11
The second tip 112A is separated from the electronic component, whereby the electronic component is released from the electronic component holding device 100 and placed on the substrate 102.

In order to mount electronic components with high accuracy, it is necessary that the relative positional relationship between the electronic components to be clamped and the electronic component clamping device 100 be kept constant.
The electronic component holding device 100 positions the electronic component in the horizontal direction by the tip 110A of the fixed holding piece 110, and also positions the electronic component in the vertical direction by the stopper 114, and holds the electronic component in a fixed relative positional relationship. It can be pinched.

On the other hand, the swing range of the movable holding piece 112 is limited by the stopper 114, and it may not be possible to hold an electronic component having a width smaller than the length of the protrusion of the stopper 114. For this reason, the stopper 114, the fixed holding piece 110, and the holding piece supporting member 108 which are integrally formed are provided.
Are prepared in such a manner that the stoppers 114 have different protrusion lengths, and are exchanged according to the types of electronic components.

[0015]

However, the holding piece supporting member 108, the fixed holding piece 110, and the stopper 114 are used.
However, there is a problem in that precise processing is required and the shape is complicated, so that the processing cost is high, and the cost of the electronic component holding device increases by preparing a plurality of types of holding member supporting members.

On the other hand, even if one kind of holding member support member is used, if the protrusion length of the stopper 114 is set to be short in accordance with the electronic component having the smallest width, it can hold electronic components of various widths. Although the above problem can be solved, when a stopper having a short protruding length is brought into contact with a wide electronic component, the electronic component is inclined, and the electronic component is pinched while being inclined, or a pair of electronic components is inclined. May fall off from between the holding pieces.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a low-cost electronic component clamping device capable of accurately and reliably clamping various electronic components having different widths. The purpose is to:

[0018]

SUMMARY OF THE INVENTION The present invention is provided on a mounting head of an electronic component mounting machine for mounting an electronic component on a substrate, and includes a holding piece support member and a fixed support on the holding piece support member. And a fixed holding piece whose tip protrudes downward,
A movable holding piece that is swingably supported by the holding piece supporting member, the tip of which protrudes downward and the tip of which is allowed to approach and separate from the tip of the fixed holding piece; and And a stopper protruding in the direction of the movable holding piece above the distal end of the fixed holding piece, wherein the fixed holding piece and the movable In an electronic component holding device in which an electronic component can be held and released at the tip of the holding piece, the stopper is a member separate from the fixed holding piece, and the stopper is movably movable within a certain range in its own projecting direction. The above-mentioned object is achieved by being attached to the fixed holding piece and capable of being held at an arbitrary protruding length.

Further, the stopper is formed as a separate member from the fixed holding piece, is detachable from the fixed holding piece, and has a plurality of types of stoppers having different projection lengths from the fixed holding piece. A plurality of types of stoppers may be prepared and selectively attachable to the fixed holding piece.

Further, the mounting position of the stopper on the fixed holding piece may be vertically adjustable.

According to the present invention, there is provided a mounting head of an electronic component mounting machine for mounting an electronic component on a substrate, wherein the holding member support member is supported by the holding member support member.
First and second holding pieces, each of which has a tip protruding downward and which can be freely moved toward and away from each other, and is fixedly installed on the first holding piece, and is located at a position higher than the tip of the first holding piece. A stopper protruding in the direction of the second holding piece on the upper side, and holding the electronic component at the tip of the first and second holding pieces while bringing the stopper into contact with the upper end of the electronic component. In the electronic component holding device that can be freely released, the first holding piece is detachably attached to the holding piece support member, and at least one of the protrusion length of the stopper and the installation position of the stopper in the vertical direction is set. The object is achieved by preparing a plurality of different types of first holding pieces and selectively mounting the plurality of types of first holding pieces to the holding piece support member. .

According to the present invention, the protrusion length of the stopper can be adjusted at low cost without replacing the holding piece supporting member.

[0023]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view showing the overall structure of an electronic component holding device 10 according to an example of the present embodiment.

The electronic component clamping device 10 includes a stopper 1
2 is a member separate from the fixed holding piece 14, and is movably supported by the fixed holding piece 14 within a certain range in its own projecting direction, and can be held at an arbitrary projecting length. It is characterized by.

The other structure is the same as that of the conventional electronic component holding apparatus 100, so that the same reference numerals as those in FIG.

The electronic component holding device 10 is provided on a mounting head 106 of the electronic component mounting machine 104, similarly to the conventional electronic component holding device 100. The description of the mounting head 106 and the electronic component mounting unit 104 will be omitted by referring to the reference numerals in FIG. 6, and the operation of the electronic component holding device 10 will be described by referring to the reference numerals in FIG. 6.

As shown in FIG.
Is a rectangular plate-like body disposed substantially horizontally, and has a rectangular through-hole 12C penetrating vertically in the vicinity of a base end 12B opposite to the distal end 12A.

Further, the through hole 12C and the base end 12
A circular through-hole 12D penetrating in the protruding direction is formed between B and B.

The fixed holding piece 14 is formed in a substantially rectangular plate-like shape in the vicinity of the front end portion 14A and protrudes downward.
A groove 14B is formed on the upper side of 4A and on one end side in the width direction. The groove 14B has a U-shaped cross section perpendicular to the direction in which the stopper 12 projects. Also, this groove 1
The vertical width of 4B is slightly larger than the thickness of the stopper 12.

The width of the fixed holding piece 14 perpendicular to the direction in which the stopper 12 protrudes is slightly smaller than the width of the through hole 12C of the stopper 12. Further, a female screw hole 14C is formed in the fixed holding piece 14 near the center in the width direction and at the same vertical position as the groove 14B so as to penetrate the fixed holding piece 14 in the projecting direction of the stopper 12. I have.

The fixed holding piece 14 vertically penetrates the through hole 12C of the stopper 12 and the groove 1
4B, the stopper 12 is fitted. Thus, the stopper 12 is slidable with respect to the fixed holding piece 14 within a certain range in the protruding direction.

Further, the stopper 12 and the fixed holding piece 14 are integrally fastened by a screw 16 and a nut 18, as shown in FIG. The screw 16 is inserted from the base end 12B side of the stopper 12 into the through hole 12D.
And screwed into the female screw hole 14 </ b> C of the fixed holding piece 14. The nut 18 is screwed to the screw 16 between the base end portion 12B of the stopper 12 and the fixed holding piece 14, and is in contact with the inner peripheral surface of the through hole 12C of the stopper 12.

Next, the operation of the electronic component clamping device 10 will be described.

When mounting the electronic component on the substrate by the electronic component holding device 10, the length of the protrusion of the stopper 12 is adjusted to be slightly shorter than the width of the electronic component to be mounted.

First, the nut 18 is rotated with respect to the screw 16 to separate the nut 18 from the inner peripheral surface of the through hole 12C of the stopper 12. Next, the screw 1
6 is rotated with respect to the fixed holding piece 14 so that the screw 1
6 is moved toward or away from the fixed holding piece 14.

For example, when the length of the protrusion of the stopper 12 is to be shortened, the head 16A of the screw 16 is separated from the fixed holding piece 14 so that the stopper 12 is pulled into the fixed holding piece 14. Slide the screw 1
6 is brought into contact with the head 16A. In this state, when the nut 18 is rotated with respect to the screw 16 and the nut 18 is brought into contact with the inner peripheral surface of the through hole 12C of the stopper 12, the stopper 12 comes into contact with the head 16A of the screw 16. It is sandwiched between the nut 18 and is held in a state of being retracted from the protrusion length before adjustment.

On the other hand, when the length of the protrusion of the stopper 12 is increased, the nut 18 is rotated with respect to the screw 16 so as to be separated from the inner peripheral surface of the through hole 12C of the stopper 12, and then, After the screw 16 is rotated with respect to the fixed holding piece 14 so that the head 16A of the screw 16 approaches the direction of the fixed holding piece 14, the nut 18 is rotated with respect to the screw 16 to stop the stopper. 12 through holes 1
It is brought into contact with the inner peripheral surface of 2C.

Thus, the stopper 12 is held at a position protruding from the position before the adjustment.

As described above, the mounting head 106 is driven in a state where the protrusion length of the stopper 12 is appropriately adjusted so as to be slightly shorter than the width of the mounted electronic component, and the electronic component holding device 10 is moved. The electronic component supply device 126 is moved above the pickup section 126A, and the electronic component holding device 10 is further lowered until the stopper 12 contacts the upper end surface of the electronic component.

Air is supplied from the mounting head 106 to the upper end side of the piston 122 so that the displacement of the piston is set to the lower end, and the tip 112A of the movable holding piece 112 is moved from the tip 14A of the fixed holding piece 14 to the lower end. Keep away.

When the stopper 12 comes into contact with the upper end surface of the electronic component, the holding piece supporting member 108 is pulled upward against the urging force of the compression coil spring 118 to absorb the shock caused by the contact. No excessive load acts on the electronic components.

In this state, when the supply of air from the mounting head 106 side to the electronic component clamping device 10 is interrupted, the piston 122 is urged by the compression coil spring 124 and slides upward. The movable holding piece 112 swings in conjunction with the upward displacement of 122, and the front end 112 A approaches the direction of the front end 14 A of the fixed holding piece 14.

Thus, the electronic component is mounted on the fixed holding piece 1.
4 and the tip 11 of the movable holding piece 112
2A.

Incidentally, if a negative pressure is supplied to the electronic component clamping device 10 from the mounting head 106 side, the clamping force can be increased.

Since the protrusion length of the stopper 12 is adjusted to be slightly shorter than the width of the electronic component, the stopper 12
One end of the electronic component surely protrudes in the direction of the tip 112A of the movable holding piece 112, and the tip 14A of the fixed holding piece 14 and the tip 112A of the movable holding piece 112.
The electronic component can be reliably held between the electronic component and the electronic component.

Since the stopper 12 contacts most of the upper end surface of the electronic component, the electronic component does not tilt when the stopper 12 descends and contacts the upper end surface of the electronic component. That is, the electronic component is always held between the fixed holding piece 14 and the movable holding piece 112 in an accurate posture.

As described above, by appropriately adjusting the length of the protrusion of the stopper 12 without replacing the holding piece support member 108, the electronic component holding device 10 can hold the electronic component accurately and reliably. be able to. When electronic components having different widths are mounted, the protrusion length of the stopper 12 is readjusted in the above-described manner, so that the electronic components can be easily and accurately and reliably held.

The stopper 12 is a plate member having a simple structure and a low cost. The stopper 12 is integrally fastened to the fixed holding piece 14 by the screw 16 and the nut 18, so that the supporting structure is simple. And low cost.

Further, by rotating the screw 16 and the nut 18, the protrusion length of the stopper 12 can be quickly and easily adjusted, and the adjustment work is efficient.

That is, the electronic component holding device 10 is a low-cost electronic component holding device capable of easily and accurately adjusting the protrusion length of the stopper and realizing the electronic component holding.

The stopper 12 and the fixed holding piece 1
4 are fitted in the groove portion 14B, so that the stopper 12 and the fixed holding piece 14 have high assembling rigidity even though the stopper 12 and the fixed holding piece 14 are separate members. .

Further, since the vertical mounting position of the stopper 12 with respect to the fixed holding piece 14 is kept constant by the groove portion 14B, the stopper 12 is moved electronically on the electronic component supply device 126 or the substrate 102. The electronic component is not damaged by being excessively pressed against the component, nor is the electronic component placed or released on the substrate 102 in a state where the lower end of the electronic component does not abut on the substrate 102. This contributes to accurate mounting of electronic components.

Next, a second example of this embodiment will be described.

In the second example of this embodiment, as shown in FIG. 4, the stopper 20 is detachable from the fixed holding piece, and a plurality of types having different projection lengths from the fixed holding piece are provided. Are prepared, and the plurality of types of stoppers can be selectively attached to the fixed holding pieces.

The other structure is the same as that of the first embodiment, and the same reference numerals as those in FIGS. 1 and 2 denote the same parts, and a description thereof will be omitted.

The stopper 20 is a substantially rectangular plate, and has one end in the width direction perpendicular to the protruding direction and the fixed holding piece 1.
A projection 20B is formed on the base end 20A on the fourth side.
0B, it can be fitted into the groove 14B of the fixed holding piece 14.

Further, a female screw hole 20C in the projecting direction is formed on the base end portion 20A side. Incidentally, reference numeral 14D in FIG. 4 denotes the female screw hole 14 in the first example of the embodiment.
Instead of C, a through-hole having a circular cross section formed in the fixed holding piece 14 penetrates the fixed holding piece 14 in the protruding direction of the stopper 20.

The stopper 20 penetrates through the through hole 14D and is detachably attached to the fixed holding piece 14 by a screw 22 screwed into the female screw hole 20C.

When the electronic component is to be mounted, a stopper whose protrusion length is slightly shorter than the width of the electronic component to be mounted is selected and mounted on the fixed holding piece 14. The stopper 20 has a simple shape and is low in cost.
2 can be easily attached to and detached from the fixed holding piece 14.

As described above, the protrusion length of the stopper can be adjusted by easily replacing only the stopper without replacing the holding piece supporting member. In addition, it is possible to reliably hold the electronic component at low cost.

Further, the projection 20B is fixed to the fixed holding piece 14
And the base end portion 20A is integrally fastened to the fixed holding piece 14 in a state of contact with the fixed holding piece 14, so that the stopper 20 and the fixed holding piece 14 are assembled together. The mounting rigidity is high.

In the first and second examples of the embodiment, the mounting position of the stopper on the fixed holding piece is fixed in the vertical direction.
A plurality of the groove portions 14B may be formed at appropriate intervals in the vertical direction in 4, so that the mounting position of the stopper on the fixed holding piece can be adjusted in the vertical direction.

Some of the electronic components to be mounted not only have different widths but also have different heights. If the vertical distance between the lower end of the stopper and the lower end of the fixed holding piece is larger than the height of the electronic component, the stopper 114 cannot be brought into contact with the upper end of the electronic component. If it can be adjusted in the vertical direction, various kinds of electronic components having different heights can be accurately and reliably held at low cost.

In the first and second examples of the embodiment, the stopper and the holding piece are provided with one projection and one groove, respectively, so that the stopper and the holding piece are fitted to each other and one piece. However, the present invention is not limited to this.For example, a plurality of protrusions and grooves may be provided on the stopper and the holding piece, and the stopper and the holding piece may be fitted to each other at a plurality of places. It may be.

The stopper and the holding piece may be fastened with a plurality of screws. In this case, it is not always necessary to provide projections and grooves on the stopper and the holding piece. For example, in the second example of the above-described embodiment, if the stopper is an L-shaped plate-like body and the stopper and the holding piece are fastened with a plurality of screws, the mounting rigidity between the stopper and the holding piece can be increased. it can.

In the first and second examples of the embodiment, the stopper is provided as a separate member from the fixed holding piece, and the length of the stopper projecting from the fixed holding piece can be adjusted. For example, the stopper is formed integrally with the fixed holding piece (first holding piece), and the fixed holding piece is detachably attached to the holding piece supporting member, and the stopper has a protrusion length. Alternatively, a plurality of types of fixed holding pieces having at least one of the vertical installation positions of the stopper different from each other may be prepared, and the plurality of types of fixed holding pieces may be selectively attached to the holding piece supporting member.

Also in this case, similarly to the first and second examples of the above embodiment, without replacing the holding piece supporting member,
By replacing only the fixed holding piece and the stopper, at least one of the protrusion length of the stopper from the fixed holding piece and the vertical position of the stopper on the fixed holding piece can be easily adjusted at low cost.

Further, both of the pair of holding pieces may be formed as movable holding pieces, and one of the movable holding pieces (first holding piece) may be provided with a stopper. The movable holding piece is pin-connected to the holding piece supporting member, and is detachably attached to the holding piece supporting member at the pin connecting portion. That is, there is no need to provide a special detachable structure. If a plurality of types of movable holding pieces having at least one of a different protrusion length of the stopper and a different vertical installation position of the stopper are prepared, and the plurality of types of movable holding pieces are selectively mounted on the holding piece support member, It is possible to easily cope with various kinds of electronic components having different widths or heights at low cost.

When it is required to mount electronic components with high precision, it is preferable that one of the pair of holding pieces is a fixed holding piece and a stopper is provided on the fixed holding piece.

Further, in the first and second examples of the above embodiment, the tip of the pair of holding pieces is separated from each other when the piston descends, and the tip of the pair of holding pieces is lifted by raising the piston. Although the parts are made to approach each other, the present invention is not limited to this, and the tip of the pair of holding pieces is separated from each other by raising the piston, and the piston descends. An electronic component holding device in which the tips of the pair of holding pieces approach each other may be used.

Further, an electronic component holding device in which the tips of a pair of holding pieces approach and separate from each other by the urging force of an electromagnet or the like may be used.

[0073]

As described above, according to the present invention,
The protrusion length of the stopper can be adjusted without replacing the holding piece support member, and it is possible to mount various kinds of electronic components on the board accurately and reliably at low cost. The effect is brought about.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the entire structure of an electronic component holding device according to a first example of an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a structure around a stopper in FIG. 1;

FIG. 3 is an enlarged side sectional view showing a structure around a stopper in FIG. 1;

FIG. 4 is an enlarged perspective view showing a structure around a stopper of the electronic component holding device according to the second embodiment of the present invention;

FIG. 5 is a cross-sectional view showing the entire structure of a conventional electronic component clamping device.

FIG. 6 is a perspective view showing a main part structure of a conventional electronic component mounting machine.

[Explanation of symbols]

 10, 100: Electronic component clamping device 12, 20, 114: Stopper 14, 110: Fixed clamping piece 14A, 110A, 112A: Tip 102: Substrate 104: Electronic component mounting machine 106: Mounting head 112: Movable clamping piece

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3C007 AS08 DS01 ES02 ES03 ET02 EU07 EU14 EV02 EV22 EV23 EW00 EW11 GS05 HS14 NS17 5E313 AA01 EE05 EE23

Claims (4)

[Claims] An electronic component mounting machine for mounting an electronic component on a substrate is provided on a mounting head of the electronic component mounting machine, and is supported by a holding piece supporting member, and is fixedly supported by the holding piece supporting member, and a tip portion protrudes downward. A fixed holding piece, and a movable holding piece that is swingably supported by the holding piece support member, the tip of which protrudes downward and the tip of which is freely movable toward and away from the tip of the fixed holding piece. A stopper that is provided on the fixed holding piece and protrudes in the direction of the movable holding piece above the distal end of the fixed holding piece, and the stopper is brought into contact with the upper end of the electronic component while In an electronic component clamping device in which an electronic component can be freely clamped and released at a distal end portion of the fixed clamping piece and the movable clamping piece, the stopper is a member separate from the fixed clamping piece, The fixed clamp can be moved freely within a certain range. An electronic component holding device which is attached to a holding piece and can be held at an arbitrary protruding length. 2. A mounting head of an electronic component mounting machine for mounting an electronic component on a substrate, comprising a holding piece support member, fixedly supported by the holding piece support member, and having a tip protruding downward. A fixed holding piece, and a movable holding piece that is swingably supported by the holding piece support member, the tip of which protrudes downward and the tip of which is freely movable toward and away from the tip of the fixed holding piece. A stopper that is provided on the fixed holding piece and protrudes in the direction of the movable holding piece above the distal end of the fixed holding piece. In an electronic component holding device in which an electronic component can be freely held and released at a tip end of the fixed holding piece and the movable holding piece, the stopper is a member separate from the fixed holding piece, and the fixed holding piece is It is detachable and the fixed A plurality of types of stoppers having different projection lengths from the holding piece are prepared, and the plurality of types of stoppers can be selectively mounted on the fixed holding piece. 3. The electronic component holding device according to claim 1, wherein the mounting position of the stopper on the fixed holding piece is vertically adjustable. 4. A mounting member of an electronic component mounting machine for mounting an electronic component on a substrate, the holding member supporting member, and a tip end portion protruding downward supported by the holding member supporting member. A first and a second holding piece which are freely movable toward and away from each other, and are formed integrally with the first holding piece, and the second holding piece is located above the distal end of the first holding piece. A stopper protruding in the direction of the holding piece, wherein the stopper is brought into contact with the upper end of the electronic component, and the electronic component can be freely held and released at the distal ends of the first and second holding pieces. In the electronic component holding device, a plurality of the first holding pieces are detachably attached to the holding piece support member, and at least one of a protrusion length of the stopper and a formation position of the stopper in a vertical direction is different. The first holding piece of the kind is prepared, Electronic component clamping apparatus characterized by first clamping piece of the kind is a selectively attachable to the clamping strip support member.