JP4487691B2 - Electronic component suction nozzle and electronic component mounting apparatus - Google Patents

Description

  The present invention relates to an electronic component suction nozzle and an electronic component mounting apparatus on which the suction nozzle is mounted.

  As a handling method such as transfer of electronic parts, a method using vacuum suction is widely used. In this method, a suction nozzle provided with a suction hole is brought into contact with the electronic component, and the electronic component is sucked using a negative pressure generated by vacuum suction of the suction hole. Since the suction nozzle used here is in direct contact with the electronic component, various types of electronic nozzles are used depending on the shape and size of the target electronic component and the supply form of the electronic component.

For example, in an electronic component mounting apparatus equipped with a tape feeder, it is necessary to take out an electronic component accommodated in a cavity of a carrier tape, so that a cavity is used as a suction nozzle when targeting a small component. There is a case where a suction nozzle of a type provided with a suction surface covering the entire surface is used (see, for example, Patent Document 1). In this patent document example, in the state where the cavity is covered by the suction nozzle, a ventilation groove that communicates the cavity with the outside is provided on the suction surface so as to avoid the occurrence of a problem that the carrier tape itself is sucked by the suction nozzle. ing.
Japanese Patent Laid-Open No. 2002-118397

  By the way, along with the miniaturization of electronic devices in recent years, the miniaturization of the size of electronic components has progressed, and in the case of a rectangular chip type component, a minute component having a side dimension of 0.4 mm × 0.2 mm (referred to as “0402 component”). Has come to be used. In the case of targeting such a micro component, it is difficult to stably suck and hold the electronic component in the cavity even if the above-described measures are taken.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic component suction nozzle capable of stably taking out a micro component from a carrier tape and an electronic component mounting apparatus equipped with the suction nozzle.

The suction nozzle for an electronic component according to claim 1 is mounted on a mounting head of an electronic component mounting apparatus, and vacuums the electronic component accommodated in the rectangular cavity of the carrier tape by vacuum suction from a suction hole communicating with the mounting head. A suction nozzle for an electronic component to be taken out by suction, a main body portion mounted on the mounting head and provided with the suction hole, and a nozzle portion that extends from the main body portion and holds the electronic component by vacuum suction A suction surface having a contact portion that contacts the upper surface of the carrier tape on the four sides of the rectangular cavity in a state of being lowered with respect to the carrier tape, and the suction surface is a carrier. A ventilation portion that communicates the inside and outside of the rectangular cavity with at least a plurality of corner portions of the rectangular cavity in a state of being in contact with the upper surface of the tape. The lower end portion of the nozzle portion is provided with a long side taper cut surface with a taper cut on the long side of the suction surface, a short side taper cut surface with a taper cut on the short side, and the long side taper cut surface. The ridgeline where the surface and the short side taper cut surface intersect is similarly taper cut, and a corner taper cut surface is formed in each corner portion, and the suction hole penetrating the nozzle portion is opened in the suction surface. are holes adsorbed hole is formed, the shape of the suction holes, and the added circular shaped opening on both sides of the longitudinal direction of the suction surface in the rectangular-shaped opening portion provided in a central portion of the suction surface structure did.

The electronic component mounting apparatus according to claim 2 is an electronic component mounting apparatus that takes out an electronic component accommodated in a rectangular cavity of a carrier tape by vacuum suction and mounts the electronic component on a substrate, and holds the electronic component by vacuum suction. Suction nozzle, mounting head to which the suction nozzle is mounted, moving means for moving the mounting head between the component supply unit and the substrate, and vacuum suction means for vacuum suction from the suction nozzle via the mounting head The suction nozzle is a suction nozzle for an electronic component according to claim 1.

According to the present invention, the suction surface having a shape having a contact portion that contacts the upper surface of the carrier tape on the four sides of the rectangular cavity in a state where the electronic component is held by vacuum suction in a state of being lowered with respect to the carrier tape; And a ventilation portion that communicates the inside and outside of the rectangular cavity with at least a plurality of corner portions of the rectangular cavity with the suction surface in contact with the upper surface of the carrier tape. A long side taper cut surface with a taper cut on the side, a short side taper cut surface with a taper cut on the short side, and a ridgeline where the long side taper cut surface and the short side taper cut surface intersect are similarly taper cut. A corner taper cut surface is formed in each corner part, and a suction hole penetrating the nozzle part is formed on the suction surface to form a suction hole. By a configuration obtained by adding a circular-shaped opening on both sides of the long side of the suction surface in the rectangular-shaped opening portion provided in a central portion of the suction surface, it is possible to take out the microcomponent from stably carrier tape .

  Next, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a front view of the electronic component mounting apparatus according to an embodiment of the present invention, and FIG. 3 is an electronic circuit according to an embodiment of the present invention. 4 is a partial cross-sectional view of the component mounting apparatus, FIG. 4 is a side view of the suction nozzle of the electronic component according to the embodiment of the present invention, and FIG. 5 is an explanation of the suction surface shape of the suction nozzle of the electronic component according to the embodiment of the present invention. FIG. 6 and FIG. 6 are explanatory views of a component removal state by the suction nozzle of the electronic component according to the embodiment of the present invention.

  First, the structure of the electronic component mounting apparatus will be described with reference to FIGS. In FIG. 1, a transport path 2 is disposed on the base 1 in the X direction. The conveyance path 2 conveys a substrate 3 on which electronic components are mounted, and positions the substrate 3 at a component mounting position by a first mounting head 9A and a second mounting head 9B described later. A first component supply unit 4A and a second component supply unit 4B are juxtaposed in the X direction on the front side of the transport path 2. A tray feeder 5 is disposed in the first component supply unit 4A, and the tray feeder 5 supplies a tray 5a in which a plurality of first electronic components P1 are stored in a regular arrangement. A plurality of tape feeders 6 are arranged in parallel in the second component supply unit 4B, and the tape feeder 6 supplies the second electronic component P2 (see FIG. 4) accommodated in the cavity of the carrier tape in a taping state. .

  The first mounting head 9A and the second mounting head 9B are multi-type mounting heads having a plurality of unit mounting heads 10, and as shown in FIG. 2, the first mounting head 9A and the second mounting head 9B are respectively The head is moved in the X and Y directions by the head moving mechanism including the first X axis table 7A, the first Y axis table 8A, the second X axis table 7B, and the second Y axis table 8B. The first mounting head 9 </ b> A takes out the first electronic component P <b> 1 from the tray feeder 5 of the first component supply unit 4 </ b> A by the unit mounting head 10 and mounts it on the substrate 3 positioned on the transport path 2. Similarly, the second mounting head 9B takes out the second electronic component P2 from the tape feeder 6 of the second component supply unit 4B and mounts it on the substrate 3. The first X-axis table 7A, the first Y-axis table 8A, the second X-axis table 7B, and the second Y-axis table 8B include the first mounting head 9A and the second mounting head 9B as the first component supply unit 4A and the second component supply unit 4B. And a moving means for moving between the substrate 3 and the substrate 3.

  Each of the first mounting head 9A and the second mounting head 9B includes a substrate recognition camera 11 that moves integrally, and the substrate recognition is performed at the timing when the first mounting head 9A and the second mounting head 9B move onto the substrate 3. The substrate 11 is imaged and recognized by the camera 11. A component recognition camera 12 is provided on a path along which the first mounting head 9A and the second mounting head 9B move from the first component supply unit 4A and the second component supply unit 4B onto the substrate 3, respectively. The component recognition camera 12 recognizes the first electronic component P1 and the second electronic component P2 held by the unit mounting heads 10 of the first mounting head 9A and the second mounting head 9B by imaging from below.

Next, a suction nozzle for an electronic component used for taking out the second electronic component P2 from the tape feeder 6 will be described. FIG. 3 shows an AA cross section in FIG. 1, and the tape feeder 6 pitch feeds the carrier tape 14 wound and accommodated on the supply reel 13 by the tape feeding mechanism 6a, whereby the rectangular cavity 14a of the carrier tape 14 is obtained. The second electronic component P2 accommodated therein is supplied to the second mounting head 9B. The second mounting head 9B holds and takes out the second electronic component P2 from the carrier tape 14 by vacuum suction by the suction nozzle 15 mounted on the unit mounting head 10. Then, the second electronic component P2 is mounted on the mounting position of the substrate 3 by moving on the substrate 3 positioned and held by the conveyance path 2 via the upper part of the component recognition camera 12 and performing a lifting operation here. .

Next, the structure of the suction nozzle 15 will be described with reference to FIG. As shown in FIG. 4 , the suction nozzle 15 includes a main body 15c and a nozzle 15a extending downward from the main body 15c, and the main body 15c is mounted in a conical taper shape provided below the unit mounting head 10. It is detachably mounted by inserting it into the hole. The main body portion 15c is provided with a suction hole 15d. When the suction nozzle 15 is attached to the unit mounting head 10, the suction hole 15d communicates with the inner hole 10a of the unit mounting head 10, and thereby the vacuum suction means 16 is connected. Connected. The suction hole 15d passes through the nozzle portion 15a and opens in the suction surface 15b provided at the lower end portion of the nozzle portion 15a to form the suction hole 15e shown in FIG.

  In the operation of taking out the electronic component, the vacuum suction means 16 is driven in a state where the suction nozzle 15 is lowered with respect to the carrier tape 14 together with the unit mounting head 10 and the suction surface 15b is in contact with the rectangular cavity 14a from above. Then, vacuum suction is performed from the suction hole 15e. Thereby, the second electronic component P2 in the rectangular cavity 14a is held on the suction surface 15b by vacuum suction. Then, by raising the unit mounting head 10 in this state, the second electronic component P2 is taken out by the suction nozzle 15 by vacuum suction.

  That is, the suction nozzle 15 is attached to the mounting head of the electronic component mounting apparatus, and vacuum suction is performed from the suction hole 15d communicating with the mounting head to take out the electronic component accommodated in the rectangular cavity 14a of the carrier tape 14 by vacuum suction. . The suction nozzle 15 includes a main body portion 15c that is mounted on the mounting head and provided with a suction hole 15d, and a nozzle portion 15a that extends from the main body portion 15c and holds the electronic component by vacuum suction. It has become.

  Next, the lower end shape of the nozzle portion 15a will be described with reference to FIG. FIG. 5 shows the lower end portion of the nozzle portion 15a, and the cross-sectional shape of the lower end portion provided with the suction surface 15b on which the nozzle portion 15a contacts the electronic component is a rectangular cross section. The suction hole 15e opened in the suction surface 15b is formed in a substantially rectangular opening (arrow a portion) provided at the center of the suction surface 15b, and a substantially circular opening (arrow b portion) on both sides in the long side direction of the suction surface 15b. ). By adopting such a suction hole shape, the suction target can be sucked with as wide a span as possible, and the nozzle portion 15a and the second electronic component P2 to be suctioned are relatively slightly displaced. Also, there is an advantage that stable adsorption holding can be performed.

  The lower end portion of the nozzle portion 15a is provided with a long side taper cut surface 17a in which the long side of the suction surface 15b is taper cut, a short side taper cut surface 17b in which the short side is taper cut, and further, the long side taper cut surface 17a. The ridgeline where the short side taper cut surface 17b intersects is similarly taper cut, and a substantially triangular corner taper cut surface 17c is formed at each corner portion. Here, the suction surface 15b is dimensioned so as to cover the entire rectangular cavity 14a of the target carrier tape 14, and the suction surface 15b is lowered with respect to the carrier tape 14 as shown in FIG. In this state, the four sides of the suction surface 15b are in contact with the upper surface of the carrier tape 14 on the four sides of the rectangular cavity 14a.

  Since the suction surface 15b is cut by the corner taper cut surface 17c at the corner portion of the rectangular cavity 14a, the rectangular cavity 14a is exposed to the outside without partially covering the upper surface, that is, the rectangular cavity 14a. A ventilation portion (see the hatching portion shown in FIG. 5B) is formed to allow the inside and the outside to communicate with each other. In the case of forming the ventilation portion, instead of providing the planar corner taper cut surface 17c, if the concave corner taper cut surface cut into the inside is provided, the opening cross-sectional area of the ventilation portion is increased. Can do.

  FIG. 6 shows a state in which the suction surface 15b is brought into contact with the upper surface of the carrier tape 14 and the second electronic component P2 in the rectangular cavity 14a is vacuum-sucked. At this time, vacuum suction force is applied to the second electronic component P2 in the rectangular cavity 14a by vacuum suction from the suction hole 15e through the suction hole 15d. Since the corner portion communicates with the outside, air enters the rectangular cavity 14a from the ventilation portion during vacuum suction. Therefore, it is possible to apply a vacuum suction force only to the second electronic component P2 without making the whole of the rectangular cavity 14a negative pressure. Thereby, it is possible to suck and hold only the second electronic component P2 and take it out from the carrier tape 14 without causing a problem that the carrier tape 14 itself is lifted by vacuum suction.

  In other words, the suction nozzle 15 shown in the above embodiment has a shape in which the nozzle portion 15a has a contact portion that comes into contact with the upper surface of the carrier tape 14 on the four sides of the rectangular cavity 14a while being lowered with respect to the carrier tape 14. In the state where the surface 15b and the adsorbing surface 15b are in contact with the upper surface of the carrier tape 14, there is provided a ventilation portion that communicates the inside and the outside of the rectangular cavity 14a with at least a plurality of corner portions. By using the suction nozzle having such a configuration, even when a micro component is accommodated and supplied in the rectangular cavity of the carrier tape, it can be stably taken out by the suction nozzle.

  The suction nozzle for electronic components of the present invention has an effect that micro components can be stably taken out from the carrier tape, and is particularly useful for an electronic component mounting apparatus for mounting very small components such as 0402 components. is there.

The top view of the electronic component mounting apparatus of one embodiment of this invention The front view of the electronic component mounting apparatus of one embodiment of this invention The fragmentary sectional view of the electronic component mounting apparatus of one embodiment of the present invention The side view of the suction nozzle of the electronic component of one embodiment of the present invention Explanatory drawing of the suction surface shape of the suction nozzle of the electronic component of one embodiment of this invention Explanatory drawing of the component taking-out state by the suction nozzle of the electronic component of one embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Board | substrate 4A 1st component supply part 4B 2nd component supply part 6 Tape feeder 9A 1st mounting head 9B 2nd mounting head 10 Unit mounting head 14 Carrier tape 14a Rectangular cavity 15 Adsorption nozzle 15a Nozzle part 15b Adsorption surface 15e Adsorption hole 16 Vacuum suction means P1 First electronic component P2 Second electronic component

Claims (2)

A suction nozzle for an electronic component that is attached to a mounting head of an electronic component mounting apparatus and vacuum-sucks the electronic component accommodated in the rectangular cavity of the carrier tape by vacuum suction from a suction hole communicating with the mounting head, A main body portion mounted on the mounting head and provided with the suction hole; and a nozzle portion that extends from the main body portion and holds the electronic component by vacuum suction. The carrier tape is provided on the nozzle portion. A suction surface having a contact portion that contacts the upper surface of the carrier tape on the four sides of the rectangular cavity in a state of being lowered with respect to the rectangular cavity, and the inside of the rectangular cavity with the suction surface being in contact with the upper surface of the carrier tape. Providing a ventilation portion that communicates with the outside at least at a plurality of corner portions of the rectangular cavity,
The lower end portion of the nozzle portion is provided with a long side taper cut surface obtained by taper cutting the long side of the suction surface, and a short side taper cut surface obtained by taper cutting the short side, and the long side taper cut surface and The ridgeline where the short side taper cut surface intersects is similarly taper cut, and the corner taper cut surface is formed in each corner part,
Wherein the suction surface, the suction holes the suction hole penetrating the nozzle portion and the opening is formed, the shape of the suction holes, the suction in the rectangular-shaped opening portion provided in a central portion of the suction surface suction nozzle of an electronic component, characterized in that a configuration obtained by adding a circular-shaped opening on both sides of the long side direction of the surface.   An electronic component mounting apparatus for taking out an electronic component housed in a rectangular cavity of a carrier tape by vacuum suction and mounting the electronic component on a substrate, the suction nozzle holding the electronic component by vacuum suction, and the suction nozzle being mounted A mounting head, moving means for moving the mounting head between the component supply unit and the substrate, and vacuum suction means for vacuum suction from the suction nozzle via the mounting head, wherein the suction nozzle comprises: An electronic component mounting apparatus, which is an electronic component suction nozzle according to claim 1.

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