JP2012243932A - Tape feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stand-alone tape feeder feeding one carrier tape in which compaction of the width can be achieved.SOLUTION: A tape travel path 23 which guides tape feed of a carrier tape 15 in a tape feeder 5 is configured to include a second horizontal guide C which guides the carrier tape 15 in horizontal position with the component housing surface 15f directing upward at a component attraction position, and an inclination guide B which guides the carrier tape 15 in inclined position with the component housing surface 15f inclining for the horizontal plane. The carrier tape 15 introduced from an upstream end 5d is fed while being twisted in the way of the tape travel path 23, and fed in the inclined position at the inclination guide B. Compaction of the width can be achieved even when the electrical wiring 29b, 29c is provided to intersect the tape travel path 23 while ensuring a residual width b2.

Description

  The present invention relates to a tape feeder that supplies an electronic component held on a carrier tape to a component suction position by a component mounting mechanism.

  A tape feeder is known as an electronic component supply device in a component mounting apparatus. This tape feeder supplies an electronic component to a component suction position by a mounting head of a component mounting mechanism by intermittently feeding a carrier tape holding the electronic component. Since a plurality of tape feeders are mounted in parallel in the component supply unit of the component mounting apparatus, it is required to reduce the width of the tape feeder per carrier tape as much as possible. In order to respond to such a request, a so-called double feeder capable of supplying two carrier tapes by one tape feeder is used (see, for example, Patent Document 1). By using such a double feeder, there is an advantage that the structure width dimension required for securing the rigidity of the feeder body can be reduced per carrier tape.

Japanese Patent No. 3901030

  However, when the above-described double feeder is used in a component mounting apparatus, the following inconvenience may occur. In other words, in a double feeder, two carrier tapes are usually used in combination as one set, but the type of carrier tape required may differ depending on the product to be produced, and only one carrier tape is supplied. A single so-called single feeder may be required. However, even in such a single feeder, the structural width dimension required to ensure the rigidity of the elongated feeder body is not much different from that of the double feeder, so the width dimension per carrier tape is inevitably large. . When the number of single feeders used alone is large, the total number of tape feeders that can be mounted on the component supply unit is restricted, resulting in a decrease in component supply capability.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tape feeder capable of realizing a compact width dimension in a single tape feeder that supplies one carrier tape.

  The tape feeder according to the present invention is mounted in parallel to the component supply unit of the component mounting apparatus, and the carrier tape storing the electronic components on the component storage surface is pitch-fed in the tape feeding direction, so that the component suction position by the mounting head A tape feeder for supplying the electronic component, wherein the feeder main body is configured to be detachably mounted on a feeder mounting base of the component supply unit and constitutes the entire shape of the tape feeder, and the feeder main body in the tape feeding direction. A tape running path that opens to the upstream end and communicates with the component suction position, and that guides the tape feeding of the carrier tape, and the tape running path includes the carrier tape at the component suction position. A horizontal guide unit that guides the component storage surface in a horizontal posture with the component storage surface facing upward, and is connected to the upstream side of the horizontal guide unit. And an inclined guide portion that guides the carrier tape in an inclined posture in which the component storage surface is inclined with respect to a horizontal plane in a plane orthogonal to the tape feeding direction, and is introduced from the upstream end portion. The carrier tape is fed while being twisted in the middle of the tape running path, and after being fed in the inclined posture in the inclined guide portion, is in the horizontal posture in the horizontal guide portion.

  According to the present invention, the tape guide path for guiding the tape feeding of the carrier tape, the horizontal guide portion for guiding the carrier tape in a horizontal posture with the component storage surface facing upward at the component suction position, and the carrier tape for the component storage surface. And an inclined guide portion that guides in an inclined posture inclined with respect to a horizontal plane. The carrier tape introduced from the upstream end is taped while being twisted in the middle of the tape running path, and is inclined at the inclined guide portion. By adopting the horizontal posture in the horizontal guide portion after the tape is fed in the posture, the width of the tape feeder can be reduced in a single tape feeder that supplies one carrier tape.

The top view of the component mounting apparatus of one embodiment of this invention The fragmentary sectional view of the component mounting apparatus of one embodiment of the present invention Structure explanatory drawing of the tape feeder of one embodiment of this invention Shape explanatory drawing of the tape running path in the tape feeder of one embodiment of the present invention Explanatory drawing of the mounting | wearing attitude | position of the carrier tape in the tape feeder of one embodiment of this invention

  Next, embodiments of the present invention will be described with reference to the drawings. First, with reference to FIG. 1 and FIG. 2, the structure of the component mounting apparatus 1 which mounts an electronic component on a board | substrate is demonstrated. The component mounting apparatus 1 has a function of mounting an electronic component such as a semiconductor chip on a substrate, and FIG. 2 partially shows a cross section taken along line AA in FIG.

  In FIG. 1, a substrate transport mechanism 2 is disposed in the center of the base 1a in the X direction (substrate transport direction). The board transport mechanism 2 transports the board 3 carried in from the upstream side, and positions and holds the board 3 on a mounting stage set for executing a component mounting operation. The substrate transport mechanism 2 is a substrate holding unit that positions and holds the substrate 3. Component supply units 4 are arranged on both sides of the substrate transport mechanism 2, and a plurality of tape feeders 5 are arranged in parallel in each component supply unit 4. The tape feeder 5 feeds an electronic component to a component suction position by a mounting head of a component mounting mechanism described below by pitch-feeding a carrier tape holding an electronic component on the component storage surface of the tape-shaped member.

  Y-axis tables 6A and 6B are arranged on both ends of the upper surface of the base 1a, and two X-axis tables 7A and 7B are installed on the Y-axis tables 6A and 6B. By driving the Y-axis table 6A, the X-axis table 7A moves horizontally in the Y direction, and by driving the Y-axis table 6B, the X-axis table 7B moves horizontally in the Y direction. Mounted on the X-axis tables 7A and 7B are a mounting head 8 and a substrate recognition camera 9 that moves integrally with the mounting head 8, respectively.

  By driving the Y-axis table 6A, the X-axis table 7A, the Y-axis table 6B, and the X-axis table 7B in combination, the mounting head 8 moves horizontally, and the electronic components are picked up from the respective component supply units 4 by suction nozzles 8a (see FIG. 2) and mounted on the substrate 3 positioned by the substrate transport mechanism 2. The Y-axis table 6A, the X-axis table 7A, the Y-axis table 6B, and the X-axis table 7B are a head moving mechanism that moves the mounting head 8.

  The substrate recognition camera 9 that has moved onto the substrate 3 together with the mounting head 8 captures and recognizes the substrate 3. A component recognition camera 10 is disposed on the path from the component supply unit 4 to the substrate transport mechanism 2. When the mounting head 8 taking out the electronic component from the component supply unit 4 moves to the substrate 3 positioned on the mounting stage, the electronic component held by the suction nozzle 8a is moved in the X direction above the component recognition camera 10. Thus, the component recognition camera 10 images the electronic component held by the suction nozzle 8a. Then, the recognition result (not shown) is used to recognize the imaging result, thereby recognizing the position of the electronic component held by the suction nozzle 8a and identifying the type of the electronic component. The nozzle holding unit 11 stores a plurality of types of suction nozzles 8a in a predetermined posture, and the mounting head 8 accesses the nozzle holding unit 11 to perform a nozzle replacement operation. The nozzle is replaced according to the above.

  The structure of the component supply unit 4 will be described. As shown in FIG. 2, the component supply unit 4 is provided with a feeder mounting base 4 a for detachably mounting a plurality of tape feeders 5. The tape feeder 5 is disposed in the component supply unit 4 by a feeder mounting carriage 12, and the carriage 12 is provided with a reel holding portion 13 for holding a tape reel 14 in which a carrier tape 15 is wound. ing. The reel holding unit 13 includes a holding roller for rotatably holding the tape reel 14, and the carrier tape 15 can be pulled out by rotating the tape reel 14 arranged in the component supply unit 4. It has become.

  Next, the configuration and function of the tape feeder 5 will be described with reference to FIG. As shown in FIG. 3, the tape feeder 5 includes a feeder main body portion 5 a constituting the entire shape of the tape feeder 5 and a mounting portion 5 b protruding downward from the lower surface of the feeder main body portion 5 a. . When the tape feeder 5 is mounted with the lower surface of the feeder main body 5a along the feeder mounting base 4a, the connector portion 5c provided on the mounting portion 5b is fitted to the feeder mounting base 4a. As a result, the tape feeder 5 is fixedly mounted on the component supply unit 4, and the tape feeder 5 is electrically connected to the control device 30 of the component mounting apparatus 1 via the electrical wiring 29a.

  Inside the feeder body 5a, a tape running path 23 that opens to the upstream end 5d (see FIG. 4) in the tape feeding direction of the feeder body 5a is communicated to the component suction position by the mounting head 8, and the tape running path. 23 is provided. The tape running path 23 has a function of guiding the tape feeding of the carrier tape 15 drawn from the tape reel 14 and introduced into the feeder main body 5a, and is mounted by the mounting head 8 from the upstream side of the feeder main body 5a. In the range up to the front of the component suction position, a communication groove (see the horizontal guide groove 23a and the inclined guide groove 23b shown in FIG. 4) capable of accommodating the carrier tape 15 in the longitudinal direction in the feeder main body 5a is the tape running path 23. In the vicinity of the component suction position, the travel guide surface (see the second horizontal guide surface 24c shown in FIG. 4) that supports the carrier tape 15 from the lower surface side becomes the tape travel path 23.

  In the carrier tape 15, a base pocket 15a constituting the tape body is provided with a component pocket 15b, which is a concave portion for storing the electronic component 16, and a feed hole 15d for pitch feeding the carrier tape 15 at a predetermined pitch. It becomes the composition. A position corresponding to the component pocket 15b on the lower surface of the base tape 15a is an embossed portion 15c protruding downward. The upper surface of the base tape 15a is sealed with a top tape 15e so as to cover the component pocket 15b in order to prevent the electronic component 16 from falling off the component pocket 15b.

  The feeder main body 5a incorporates a tape feeding portion 17 for pitch feeding the carrier tape 15. The tape feeding unit 17 includes a feed motor 19 that rotationally drives a sprocket 20 provided at the tip of the tape running path 23 and a feeder control unit 18 that controls the feed motor 19. When the feed motor 19 is intermittently rotated with the feed pin (not shown) provided on the sprocket 20 engaged with the feed hole 15d of the carrier tape 15, the carrier tape 15 is pitch fed along the tape running path 23. Is done.

  The front side of the sprocket 20 is a component suction position where the electronic component 16 in the component pocket 15b is sucked and taken out by the suction nozzle 8a of the mounting head 8. A pressing member 21 is disposed on the upper surface side of the feeder main body 5a in the vicinity of the sprocket 20, and the pressing member 21 is provided with a suction opening 22 corresponding to a component suction position by the suction nozzle 8a. The upstream end of the suction opening 22 is a top tape peeling portion 22a for peeling the top tape 15e.

  In the process in which the carrier tape 15 travels below the pressing member 21, the top tape 15e is drawn around the top tape peeling portion 22a and drawn to the upstream side, so that the top tape 15e is at the tape peeling position upstream of the component suction position. Is peeled off from the base tape 15a and folded back upstream. The folded top tape 15e is guided by the guide roller 26 and is fed by the top tape feeding mechanism 25 into the tape collecting unit 27 provided on the upstream side of the feeder main body 5a. As a result, the electronic component 16 in the component pocket 15b is exposed upward in the suction opening 22 and is ready to be taken out by the suction nozzle 8a.

  Furthermore, on the upper surface of the upstream end of the feeder main body 5a, an LED lamp for displaying the operation state of the tape feeder 5 to the operator, an operation panel 28 for the operator to perform necessary operation input, and a new carrier tape 15 And a detection sensor (not shown) for optically detecting a tape splice portion that is connected to the already-attached carrier tape 15.

  For this reason, in the feeder main body 5a, the electric wiring 29b for connecting the feed motor 25a for driving the top tape feeding mechanism 25 and the feeder controller 18 and the aforementioned sensor and operation panel 28 and the feeder controller 18 are connected. Electrical wiring 29c is provided, and these wiring paths are set so as to cross the tape running path 23. Since these wiring paths require a wiring groove 32 (see FIG. 4) in which the feeder main body 5a is cut in the width direction, this wiring has a width dimension required for the communication groove constituting the tape running path 23. A dimension to which a margin width for forming the groove 32 is added becomes the entire width dimension of the feeder main body 5a.

  However, when the overall width dimension of the feeder main body 5a is increased in this way, the total number of tape feeders 5 that can be mounted on the component supply unit having a restricted feeder arrangement width is reduced, and the component supply capability is reduced. In particular, when a single-type tape feeder that supplies only one carrier tape is required, an increase in the width dimension per carrier tape has a significant effect on a reduction in component supply capability. For this reason, for the single-type tape feeder 5, a design effort is required to minimize the structural width required to ensure the rigidity of the elongated feeder body.

  In view of such a demand, in the present embodiment, the entire width dimension of the tape feeder 5 is reduced by configuring the tape running path 23 as follows. FIG. 4 shows the configuration and shape of the tape running path 23 provided in the feeder main body 5a. First, the carrier tape 15 drawn out from the tape reel 14 is introduced into the tape running path 23 from the upstream end portion 5d, and travels in a horizontal posture in the horizontal guide groove 23a having the cross-sectional shape shown in the first horizontal guide portion A, and then tilted. The vehicle travels obliquely upward in an inclined posture in the inclined guide groove 23b shown in the guide portion B. Then, after reaching the upper surface side of the feeder main body 5a, the vehicle travels again on the second horizontal guide surface 24c shown in the second horizontal guide portion C in a horizontal posture.

  Here, the horizontal guide groove 23a shown in the first horizontal guide portion A has a form having a first horizontal guide surface 24a provided horizontally at right angles to the thickness direction of the feeder main body portion 5a. The horizontal guide groove 23a is set to a size that is necessary and sufficient to accommodate and guide the carrier tape 15 in a horizontal position, and the dimension obtained by excluding the width portion of the horizontal guide groove 23a from the overall width dimension D of the feeder main body 5a remains. The width is b1. The remaining width b1 is set as small as possible within a range sufficient to ensure the rigidity required for the feeder main body 5a.

  In contrast, in the inclined guide portion B, the inclined guide groove 23b is provided such that the inclined guide surface 24b is inclined by an inclination angle α with respect to the horizontal plane in a plane (XZ plane) orthogonal to the tape feeding direction (Y direction). It has been. As a result, the carrier tape 15 traveling in the inclined guide groove 23b is guided in an inclined posture in which the component storage surface 15f is similarly inclined. Then, the carrier tape 15 that has reached the upper surface of the feeder main body portion 5a by ascending the inclined guide portion B is guided at the lower surface by the horizontal second horizontal guide surface 24c shown in the second horizontal guide portion C. It is pressed from above by a pressing member 21 (see FIG. 3) in a horizontal posture with the surface 15f facing upward.

  By forming the inclined guide portion B in such a shape in the tape running path 23, the remaining width b2 excluding the horizontal width portion of the inclined guide groove 23b from the overall width dimension D of the feeder main body portion 5a is the inclined guide surface. 24b is larger than the remaining width b1 by the amount of inclination. Thereby, it is possible to form the wiring groove 32 for wiring introduction described below within the range of the inclined guide portion B while making the remaining width b1 as small as possible.

  In the tape feeder 5 having the above-described configuration, as shown in FIG. 3, the feeder control unit 18 and the device arranged on the upstream side of the tape feeder 5 are connected by electric wires 29b and 29c. Here, the electrical wirings 29b and 29c need to be led in a form that intersects the tape running path 23 in the feeder main body 5a due to the restriction due to the above arrangement. In the present embodiment, a depth sufficient to guide the electrical wiring 29b and the electrical wiring 29c using the remaining width b2 increased by providing the inclined guide groove 23b in the inclined guide portion B by being inclined. The wiring groove 32 can be formed in the feeder main body 5a.

  That is, in the present embodiment, the tape running path 23 that guides the carrier tape 15 is the second horizontal guide portion C that guides the carrier tape 15 in a horizontal posture with the component storage surface 15f facing upward at the component suction position by the mounting head 8. And an inclined guide that is connected to the upstream side of the second horizontal guide portion C and guides the carrier tape 15 in an inclined posture in which the component storage surface 15f is inclined with respect to a horizontal plane in a plane orthogonal to the tape feeding direction. Part B is included.

  The carrier tape 15 introduced from the upstream end 5d of the feeder main body 5a is fed while being twisted in the tape running path 23. That is, in the tape running path 23, as shown in FIG. 5, first, in the first horizontal guide portion A, the lower guide is guided in the horizontal guide groove 23a by the second horizontal guide surface 24c, and is sent in a horizontal posture. The taper is once twisted in the process of moving to the tape and is fed in a tilted posture at the tilt guide portion B. Then, after being twisted back when moving from the inclined guide portion B to the second horizontal guide portion C, the second horizontal guide portion C assumes a horizontal posture with the component storage surface 15f facing upward.

  As a result, as shown in FIG. 4, at the wiring intersection where the electrical wires 29b and 29c inside the tape feeder 5 intersect the inclined guide portion B, the carrier is within the plane perpendicular to the tape feeding direction of the feeder main body 5a. It is possible to form a wiring groove 32 having a depth required to lead the electric wirings 29b and 29c in the remaining cross-sectional area of the remaining width b2 where the inclined guide surface 24b for guiding the tape 15 is not formed. ing.

  As described above, in the present embodiment, the tape running path 23 that guides the tape feeding of the carrier tape 15 is guided in a horizontal posture with the component storage surface 15f facing upward at the component suction position. The structure includes a first horizontal guide portion A, a second horizontal guide portion C, and an inclined guide portion B that guides the carrier tape 15 in an inclined posture in which the component storage surface 15f is inclined with respect to a horizontal plane. Then, the carrier tape 15 introduced from the upstream end 5d is tape-fed while being twisted in the middle of the tape running path 23, and after being taped in an inclined posture in the inclined guide portion B, the horizontal posture in the second horizontal guide portion C is changed. By doing so, in the single tape feeder 5 that supplies one carrier tape, the overall width dimension D can be reduced.

  The tape feeder according to the present invention has an effect that the width of the tape feeder can be reduced in a single tape feeder that supplies one carrier tape, and the electronic component is taken out from the tape feeder and mounted on the substrate. Useful in the packaging field.

DESCRIPTION OF SYMBOLS 1 Component mounting apparatus 3 Board | substrate 4 Component supply part 4a Feeder mounting base 5 Tape feeder 5a Feeder main-body part 5d Upstream end part 8 Mounting head 15 Carrier tape 15f Component storage surface 16 Electronic component 17 Tape feed part 18 Feeder control part 25 Top tape collection | recovery Mechanism 29a, 29b, 29c Electric wiring A 1st horizontal guide part B Inclination guide part C 2nd horizontal guide part

Claims (2)

A tape that is mounted in parallel to the component supply unit of the component mounting apparatus, and that feeds the electronic component to the component suction position by the mounting head by pitch-feeding the carrier tape storing the electronic component on the component storage surface in the tape feeding direction. A feeder,
A feeder main body configured to be detachably mounted on a feeder mounting base of the component supply unit and constituting an overall shape of the tape feeder;
A tape running path that opens to the upstream end of the feeder main body in the tape feeding direction and communicates with the component suction position and guides the tape feeding of the carrier tape; and
The tape running path guides the carrier tape in a horizontal posture with the component storage surface facing upward at the component suction position;
An inclined guide portion that is connected to the upstream side of the horizontal guide portion and guides the carrier tape in an inclined posture in which the component storage surface is inclined with respect to a horizontal plane in a plane orthogonal to the tape feeding direction. Including
The carrier tape introduced from the upstream end is tape-fed while being twisted in the middle of the tape traveling path, and after being fed in the inclined posture at the inclined guide portion, becomes the horizontal posture at the horizontal guide portion. Tape feeder characterized by   The remaining cross section in which the guide surface for guiding the carrier tape is not formed in the cross section perpendicular to the tape feeding direction of the feeder main body portion at the wiring crossing portion where the electric wiring inside the tape feeder intersects the inclined guide portion. The tape feeder according to claim 1, wherein the electric wiring is led in a range.

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