JP2002151889A - Electronic component mounting equipment - Google Patents

Abstract

(57) Abstract: Provided is an electronic component mounting apparatus that can securely mount an electronic component having an opening on an upper surface side on a substrate at low cost. SOLUTION: A cylinder 18, a piston 20 slidable in the cylinder 18, and a fixed claw member 22 engaged with the piston 20 and approaching each other in conjunction with the movement of the piston when the piston slides are swung. A moving claw member 24, and the claw members are separated from each other and come into contact with each other from the inside of the electronic component 26, whereby the electronic component holding device 14 capable of holding the electronic component 26 is mounted on the electronic component mounting device. Prepared for.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component mounting apparatus for mounting an electronic component on a substrate.

[0002]

2. Description of the Related Art Conventionally, an electronic component mounting apparatus 100 as shown in FIG. 5 has been widely used for mounting electronic components on a substrate. This electronic component mounting apparatus 100
, A head part 104 for supporting the slide shaft 102 so as to be movable in the Z direction and rotatable about the θ axis, and a head part 10
XY drive unit 106 for supporting the movably 4 in the XY directions
And

Further, the electronic component mounting apparatus 100 is detachably supported near the lower end of a slide shaft 102, and is capable of vacuum-sucking and releasing electronic components.
8 and at least one of electronic component holding devices 110 which are also detachably supported on the slide shaft 102 and can hold and release electronic components. The electronic component suction nozzle 108 and the electronic component holding device 110 The electronic component 113 is vacuum-sucked or sandwiched, transported to a board (not shown) of the component mounting section 114, and released and mounted on the board.

[0006] The electronic component suction nozzle 108 is a cylindrical body as shown in FIG. 6, and is capable of vacuum-sucking an electronic component contacting the lower end side by a negative pressure supplied from the upper end side via the slide shaft 102. Have been.

[0005] On the other hand, as shown in FIG.
6, a piston 118 slidable inside the piston 11,
And a pinching portion 122 which is engaged with the pin 8 via a pin 120 and is capable of pinching and releasing the electronic component in conjunction with the sliding of the piston 118.

[0006] The holding portion 122 generally includes a pair of claw members 12.
2a, 122b, and these claw members 122a, 122
When one or both of the members b swings, the claw members 122
The lower ends of a and 122b approach and separate from each other, and can hold and release the electronic component.

The electronic component clamping device 110 mainly has an electronic component that is not suitable for vacuum suction by the electronic component suction nozzle 108, for example, a concave portion is present on the upper surface side. It is used for mounting electronic components such as connectors that cannot be vacuum-sucked.

That is, in the conventional electronic component mounting apparatus 100, various types of electronic components are vacuum-sucked or nipped and mounted on a substrate by appropriately using the electronic-part suction nozzle 108 and the electronic-part holding device 110. Have been.

As shown in FIG. 8, the electronic component 113 is generally stored in a state where it is sealed in a storage tape 124, and the electronic component 113 is fed by a tape feeder (not shown) that feeds out a winding tape around which the storage tape 124 is wound. It is supplied to the supply unit 112.

The storage tape 124 has rectangular recesses 124 a formed at regular intervals in the longitudinal direction of the tape, and the depth of the recesses 124 a is substantially equal to the thickness of the electronic component 113. The electronic component 113 is housed in the recess 124 a and covers the upper surface of the housing tape 124.
b is enclosed in the storage tape 124.

The cover tape 124b is peeled off near the electronic component supply section 112, so that the electronic component 113 can be taken out from above.

For example, when the upper surface of the electronic component 113 is flat, the electronic component 113 is vacuum-sucked by the electronic component suction nozzle 108, and the electronic component 113 has an opening on the upper surface side like a connector. In this case, since the negative pressure leaks, as shown in FIG. 9, the claw members 122a and 122b of the electronic component clamping device are inserted into the gap between the electronic component 113 and the side wall 124c of the recess 124a of the storage tape 124. Then, the electronic component 113 is sandwiched from both sides in the tape longitudinal direction, and the electronic component 113 is taken out from the storage tape 124.

However, when the electronic component 113 is relatively large, the gap between the electronic component 113 and the side wall 124c is small,
Since the claw members 122a and 122b cannot be inserted into the narrow gap, the electronic component 113 cannot be held.

[0014]

On the other hand, by increasing the width of the concave portion 124a of the storage tape 124,
Even if the electronic component 113 is a relatively large electronic component having an opening on the upper surface side, a sufficient gap between the electronic component 113 and the side wall 124c of the concave portion 124a of the storage tape 124 is ensured, and the electronic component 113 is removed. Electronic component clamping device 110
Can be held between the recesses 1 of the storage tape 124.
In order to increase the width of 24a, it is necessary to reduce the number of the electronic components stored in the storage tape 124, which increases the number of replacements of the storage tape 124, and greatly reduces the component mounting tact. Become.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has an electronic component mounting apparatus capable of reliably mounting a relatively large electronic component having an opening on the upper surface side on a substrate at low cost. The purpose is to provide.

[0016]

According to the present invention, a cylinder, a piston slidable in the cylinder, and a piston engaged with the piston are interlocked with the piston when the piston slides. And two or more claw members approaching and separating from each other,
Comprising an electronic component holding device capable of holding the electronic component by allowing the claw members to be separated from each other and abutting against the side wall of the electronic component having the opening from the inside of the opening. With electronic component mounting equipment characterized by
The above object is achieved.

The claw member is a plate-like body arranged in a substantially vertical direction, and has a fixed claw member supported on the cylinder side at an upper end thereof, and is disposed opposite to the fixed claw member. A swinging pawl member pivotally supported on the cylinder side, the lower end of which swings in conjunction with the movement of the piston when the piston slides, and moves toward and away from the lower end of the fixed claw member.

Further, the fixed claw member has a stepped portion projecting in a direction away from the lower end at a vertically intermediate portion on a side away from the swinging claw member. The electronic component may be held while being in contact with the upper surface of the electronic component.

Also, the electronic component holding device may be capable of holding the electronic component when the claw members approach each other and abut against the side wall of the electronic component from outside.

Further, by supplying a separation spring for urging the claw members in a direction in which the claw members are separated from each other and an approaching pressure of a positive pressure or a negative pressure to the cylinder, the urging force of the separation spring is reduced. An approach pressure supply means that can drive the claw members in a direction approaching each other may be provided.

According to the present invention, an electronic component having an opening can be securely held and mounted on a substrate.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The electronic component mounting device 10 according to the embodiment of the present invention shown in FIG. 1 is characterized by the structure of an electronic component holding device 14 detachably supported near the lower end of a hollow slide shaft 12. The remaining structure is the same as that of the conventional electronic component mounting apparatus 100, and thus the description is omitted.

As shown in FIG. 2, the electronic component holding device 1
4 is a cylinder 18 formed in a cylindrical main body 16,
A piston 20 slidable in the cylinder 18 is engaged with a lower end of the piston 20 in the drawing via a pin 38,
When the pistons 20 slide, they approach each other in conjunction with this.
The fixed claw member 22 and the rocking claw member 24 are separated from each other, and the fixed claw member 22 and the rocking claw member 24 are separated from each other and formed on the side wall 26a of the electronic component 26 having the opening. , The electronic component 26 can be held. Reference numeral 27 in the drawing indicates a storage tape for storing the electronic component 26.

The electronic component holding device 14 is supported near the lower end of the slide shaft 12 on the upper end side of the main body 16. The main body 16 has three stepped holes in the axial direction inside thereof, and the stepped holes are a lower step hole 16a, a middle step hole 16b,
The upper step hole 16c is formed so as to become thinner in this order. The cylinder 18 is formed as a middle hole 16 b of the main body 16.

The piston 20 has a disk-shaped head 20a,
The head 20a has a neck portion 20b of a substantially round bar formed so as to protrude downward coaxially from the lower end of the head portion 20a.
Urged downward.

On both sides in the horizontal direction near the lower end of the neck 20b,
A pair of parallel plane portions 20c in the vertical direction are formed, and further, a pin hole 20d penetrating in the horizontal direction near the center of these plane portions 20c is formed.

The separation spring 28 is a compression coil spring which is in contact with the upper end of the head 20a of the piston 20 at the lower end, and is in contact with the upper end of the cylinder 18 at the upper end.
Is urged downward.

The fixed claw member 22 is a plate-like body arranged in a substantially vertical direction.
It is fixed to the lower end of. The swinging pawl member 24 is disposed so as to face the fixed pawl member 22 and has a slider 3 near the upper end.
When the piston 20 slides, the lower end swings to move toward and away from the lower end of the fixed claw member 22.

The slider 30 includes a cylindrical member 30a and a fixed claw member supporting portion 3 projecting downward from the lower surface of the cylindrical member 30a.
0b and the swinging pawl member support portion 30c.

The cylindrical body 30a is attached to the main body 16 at the outer periphery.
The lower hole 16a is loosely fitted to the neck 20b of the piston 20 at the center hole.

An elongated hole 30d in the axial direction is formed in the side wall of the cylindrical body 30a, and a horizontal guide pin 32 screwed near the lower end of the main body 16 is inserted into the elongated hole 30d.

Thus, the slider 30 is slidable with respect to the main body 16 within a certain range in the axial direction, and is not allowed to rotate around the axis.

A buffer spring 3 is provided on the upper end side of the slider 30.
4 are mounted. The cushioning spring 34 is a compression coil spring that abuts the upper end of the slider 30 at the lower end and the upper end of the lower hole 16a of the main body 16 at the upper end to urge the slider 30 downward.

Thus, the slider 30 is normally held at the lower limit position.

The fixed claw member supporting portion 30b and the swinging claw member supporting portion 30c are provided axially symmetrically with a neck portion 20b of the piston 20 therebetween, and each of the pair of parallel plane portions 2 of the neck portion 20b is provided.
It has a pair of side surfaces having substantially the same width as 0c, and these side surfaces and the parallel plane portion 20c are arranged so as to be included in substantially the same plane. Further, a pin hole 30e penetrating the side surface in the horizontal direction is formed in the swing claw member support portion 30c.

The fixed claw member 22 includes a fixed claw member supporting portion 30b.
And a stepped portion 22a projecting downward from the rocking claw member 24 and projecting toward the side away from the lower end at a vertically intermediate portion on the side away from the swinging pawl member 24. The electronic component 26 is provided on the lower surface of the stepped portion 22a. The electronic component 26 can be held while contacting the upper surface of the electronic component 26.

The oscillating claw member 24 is a substantially rectangular plate-shaped oscillating claw 2 disposed opposite the fixed claw member 22 across the axis.
4a, and a pair of guide plates 24b formed so as to protrude axially from both sides in the width direction of the upper end of the swing claw 24a.

The guide plates 24b are substantially rectangular plate-like bodies, and the side surfaces of the swinging pawl member support portion 30c and the piston 2
The lower end of the oscillating claw 24a is arranged integrally with the upper end of the swinging pawl 24a at the lower end of the oscillating claw 24a.

A horizontal pin hole 24c is formed near the end of the guide plate 24b on the side of the swinging pawl member 24. The swing claw member 24 is swingably supported by the slider 30 via a pin 36 that passes through the pin hole 24c and the pin hole 30e of the swing claw member support portion 30c.

A U-shaped notch 24d is formed at the axial end of the guide plate 24b. The swing claw member 24 is slidably and loosely fitted with the notch 24d, and
The piston 20 is engaged with the piston 20 via a pin 38 passing through a pin hole 20d near the lower end of the piston 20.
When it slides in the up and down direction, it swings around the pin 36 in conjunction with this.

The swing claw member 24 swings, and the swing claw member 2
The electronic component holding device 14 is capable of holding the electronic component 26 when the 4 and the fixed claw member 22 are separated from each other and abut against the side wall 26a of the electronic component 26 from inside.

Further, the swinging claw member 24 swings in the opposite direction and separates inward from the side wall 26a of the electronic component 26, so that the electronic component holding device 14 can release the electronic component 26.

The separation spring 28 urges the swing claw member 24 away from the fixed claw member 22 via the piston 20 and the pin 38, so that the swing claw member 24 is normally in the fixed claw member 22. It is held at the position furthest away from.

Next, by supplying a negative pressure (approaching pressure) to the cylinder 18 shown in FIG. 3, the swinging pawl member 24 approaches the fixed pawl member 22 against the urging force of the separation spring 28. By supplying the approach pressure supply means 42, which can be driven in the direction shown in FIG. The structure of the separation pressure supply means 44 which can be biased will be described.

The approach pressure supply means 42 includes a compressor 46
, An ejector 48, and a first solenoid valve 50 disposed between an input port 48 a of the ejector 48 and the compressor 46. Ejector 4
8 is connected to the slide shaft 12 via a flexible tube 52 or the like.

The separation pressure supply means 44 includes a compressor 46 shared with the approach pressure supply means 42 and a second electromagnetic valve 5.
The output port 54a of the second solenoid valve 54 is connected to the slide shaft 12 via the flexible tube 52 and the like, like the output port 48b of the ejector 48.

In FIG. 3, reference numeral 56 denotes a variable orifice, reference numeral 58 denotes a pressure sensor, and reference numeral 60 denotes an air filter.

Next, the operation when the electronic component mounting apparatus 10 holds and releases the electronic component will be described.

When holding the electronic components, first, the first solenoid valve 50 of the approach pressure supply means 42 is driven to supply the compressed air of the compressor 46 to the ejector 48, and a negative pressure is generated in the ejector 48. . This negative pressure is supplied to the cylinder 18 of the electronic component holding device 14 via the flexible tube 52, the slide shaft 12, and the like, and slides the piston 20 upward against the urging force of the separation spring 28.

At this time, the second pressure of the separation pressure supply means 44
Of the positive pressure from the compressor 46 to the cylinder 18 is shut off.

When the piston 20 rises, the piston 20
The pin 38 near the lower end also moves up. The pin 38 is raised and slides with the notch 24d of the swing claw member 24,
The swing claw member 24 is rotated around the pin 36. Thereby, the lower end of the swing claw member 24 approaches the fixed claw member 22.

In this state, the electronic component holding device 14 is lowered together with the slide shaft 12, and the lower ends of the fixed claw member 22 and the swing claw member 24 are inserted into the upper opening of the electronic component 26. At this time, the lower surface of the stepped portion 22a of the fixed claw member 22 is brought into contact with the upper surface of the side wall 26a of the electronic component 26, and the lower side of the swinging claw member 24 below the stepped portion 22a is separated. The surface of the fixed claw member 22 is brought into contact with the inner surface of the side wall 26a.

Incidentally, even if the electronic component holding device 14 is lowered excessively, the slider 30 retracts while shortening the buffer spring 34 and absorbs the excessive lowering amount, so that the electronic component 26 is not damaged. .

Next, the supply of the compressed air from the compressor 46 to the ejector 48 is cut off by driving the first solenoid valve 50 of the approach pressure supply means 42, and the supply of the negative pressure from the ejector 48 to the cylinder 18 is stopped. When the cylinder is shut off and the inside of the cylinder 18 is released to the atmosphere, the piston 20 is urged by the separation spring 28 and slides downward.

When the piston 20 descends, the swinging pawl member 24 rotates about the pin 36 via the pin 38, and the lower end of the swinging pawl member 24 is separated from the fixed pawl member 22 while the side wall 26 a of the electronic component 26 is separated. Abut from inside.

That is, the fixed claw member 22 and the swing claw member 24 hold the electronic component 26 inside the side wall 26a by the urging force of the separation spring 28 transmitted through the piston 20 and the pin 38.

As described above, in the electronic component mounting apparatus 10, the fixed claw member 22 and the swing claw member 24 are connected to the side wall 2 of the electronic component 26.
Since the electronic component 26 is inserted into and abutted on the inner side of 6a to hold the electronic component 26, the electronic component 26 is relatively large, and the gap between the outside of the side wall 26a and the storage tape 27 is narrow. Even when the electronic component cannot be clamped, or when the electronic component cannot be clamped from the outside due to irregularities on the outer surface of the side wall 26a, the electronic component is held and mounted on the substrate. can do.

At this time, since the fixed claw member 22 abuts against the side wall 26a of the electronic component 26 from the upper surface and the inner side surface to regulate the movement of the electronic component 26, the swing claw member 24 swings. When the electronic component 26 comes into contact with the inside of the side wall 26a, the electronic component 26 is not displaced, and the electronic component can be stably held.

Next, the second solenoid valve 54 of the separation pressure supply means 44 is driven to apply the positive pressure of the compressor 46 to the cylinder 1.
8, the piston 20 is urged downward, and the urging force of this positive pressure (separation pressure) is transmitted to the swinging pawl member 24 via the pin 38, and the swinging pawl member 24 and the fixed pawl member 2
2 holds the electronic component 26 more strongly.

That is, the swinging pawl member 24 and the fixed pawl member 22 are caused by two biasing forces, namely, the biasing force of the separation spring 28 and the biasing force of the separation pressure supplied from the separation pressure supply means 44.
The electronic component 26 can be strongly held.

Next, the electronic component mounting apparatus 10 transports the held electronic component 26 to a predetermined mounting position on a substrate (not shown).

When releasing the electronic components on the board, the second solenoid valve 54 of the separation pressure supply means 44 is driven to cut off the supply of the positive pressure from the compressor 46 to the cylinder 18 and to supply the approach pressure. By driving the first solenoid valve 50 of the means 42, compressed air is supplied from the compressor 46 to the ejector 48, and a negative pressure is generated in the ejector 48. This negative pressure is applied to the flexible tube 52, the slide shaft 1
The piston 20 is supplied to the cylinder 18 of the electronic component holding device 14 via the second and the like, and slides the piston 20 upward against the urging force of the separation spring 28.

As the piston 20 rises, the pin 38 near the lower end of the piston 20 rises, and the pin 38
The sliding claw member 24 is rotated around the pin 36 while sliding with the notch 24d of No. 4 to separate it from the side wall 26a of the electronic component 26. Thereby, the electronic component 26 is fixed to the fixed claw member 2.
2 and is released from the swinging pawl member 24 and placed on the substrate.

Thereafter, the operation of mounting the electronic parts is repeated in the same manner.

In the example of the present embodiment, the fixed claw member 22 contacts the side wall 26a of the electronic component 26 from the inside, and also contacts the upper surface of the side wall 26a on the lower surface of the stepped portion 22a. Although the displacement is prevented, the present invention is not limited to this. If the electronic component is unlikely to be displaced in the up-down direction, the inner part of the side wall 26a is not provided without the stepped portion 22a. A fixed claw member that prevents displacement of the electronic component only by contact may be used.

Further, the electronic component holding device 14 holds the electronic component with the fixed claw member 22 and the swing claw member 24, but the present invention is not limited to this, and the electronic component is If it is difficult to displace horizontally,
An electronic component holding device that holds the electronic component by bringing the two rocking claw members into contact with each other from the inside of the electronic component may be used.

Further, in the example of the present embodiment, the electronic component holding device 14 holds the electronic component by the two urging forces of the urging force of the separation spring 28 and the urging force by the separation pressure supplied from the separation pressure supply means 44. However, the present invention is not limited to this, and when a large holding force is not required, such as when the electronic component is light, either the biasing force of the separation spring 28 or the biasing force of the separation pressure is used. An electronic component holding device that holds an electronic component by one of the urging forces may be used.

Next, a second example of the embodiment of the present invention shown in FIG. 4 will be described.

In the second embodiment of the present invention, similarly to the first embodiment, the fixed claw member 22 and the swing claw member 24 abut against the side wall 26a of the electronic component 26 from the inside. It is characterized in that, in addition to being able to hold the electronic component 26, the electronic component 62 can be held in contact with the electronic component 62 from outside.

The other structure is the same as that of the first embodiment, and the description is omitted.

In the second example of the present embodiment, a substantially rectangular plate-like projection 22b projecting horizontally is formed on the rocking claw member 24 side of the fixed claw member 22.

In this way, when holding a relatively large electronic component 26 having an opening, the fixed claw member 22 and the oscillating claw member 24 are moved in the same manner as in the first example of the embodiment. The electronic component 2 is brought into contact with the inside of the side wall 26a.
6 and a relatively small electronic component 62, the fixed claw member 22 and the swinging claw member 24 are brought into contact with the electronic component 62 from the outside to pinch the electronic component 62. Can be held.

In the first and second examples of the embodiment, the electronic component holding device 14 can hold and release the electronic component by two claw members, but the present invention is not limited to this. Instead, an electronic component holding device capable of holding and releasing the electronic component by three or more claw members may be used.

In the first and second examples of the embodiment, a member having a high coefficient of friction, such as rubber, is provided at a portion of the claw member that comes into contact with the electronic component to increase the holding force of the electronic component. It may be a component holding device.

[0076]

According to the present invention, a relatively large electronic component having an opening on the upper surface side can be securely held inside the side wall of the concave portion and mounted on the substrate.

[Brief description of the drawings]

FIG. 1 is a side view showing the overall structure of an electronic component mounting apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing the structure of an electronic component holding device in the electronic component mounting device.

FIG. 3 is a pneumatic circuit diagram showing the structure of an approach pressure supply unit and a separation pressure supply unit according to an embodiment of the present invention.

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

FIG. 5 is a perspective view showing the entire structure of a conventional electronic component mounting apparatus.

FIG. 6 is an enlarged sectional view showing the structure of a conventional electronic component suction nozzle.

FIG. 7 is an enlarged sectional view showing the structure of a conventional electronic component clamping device.

FIG. 8 is a perspective view showing the structure of a conventional storage tape.

FIG. 9 is a cross-sectional view showing the holding of an electronic component in a storage tape by a conventional electronic component holding device.

[Explanation of symbols]

 10, 100: Electronic component mounting device 14: Electronic component holding device 18: Cylinder 20: Piston 22: Fixed claw member 22a: Stepped portion 22b: Projection 24: Oscillating claw member 28: Separating spring 42: Approach pressure supply means 44 … Separation pressure supply means

Claims (5)

[Claims] 1. A cylinder, a piston slidable in the cylinder, and two or more claw members engaged with the piston and moved toward and away from each other when the piston slides. Comprising an electronic component holding device capable of holding the electronic component by allowing the claw members to be separated from each other and abutting against the side wall of the electronic component having the opening from the inside of the opening. Electronic component mounting apparatus characterized by the above-mentioned. 2. The fixed claw member according to claim 1, wherein the claw member is a plate-like body disposed substantially vertically and supported at the upper end on the cylinder side, and is opposed to the fixed claw member. A swinging pawl member pivotally supported by the cylinder near the upper end, and a lower end swinging in conjunction with the piston when the piston slides so as to approach / separate from a lower end of the fixed claw member. Characteristic electronic component mounting equipment. 3. The fixed claw member according to claim 2, wherein the fixed claw member has a stepped portion at a vertically intermediate portion on a side away from the swinging claw member, the step being protruded from the lower end toward the farther side. An electronic component mounting device, wherein an electronic component can be held while being in contact with an upper surface of the electronic component on a lower surface of the attachment portion. 4. The electronic component holding device according to claim 1, 2 or 3, wherein the claw members approach each other and abut against a side wall of the electronic component from outside, so that the electronic component holding device can hold the electronic component. Electronic component mounting apparatus characterized by the above-mentioned. 5. A separation spring for urging said claw members in a direction in which said claw members are separated from each other, and an approach pressure of a positive pressure or a negative pressure to said cylinder. An electronic component mounting apparatus, comprising: an approach pressure supply unit that can drive the claw members in a direction approaching each other against the biasing force of the separation spring.