JP5312118B2 - Tape feeder - Google Patents

Abstract

The present invention provides a belt-type feeder which can reduce the wastage of electronic component as possible in setting a belt even in a mode that the external sealing belt stripped from a stripping part is crossed with a material loading strip for discharging downwards. The belt-type feeder strips the external sealing belt from the material loading strip through the stripping part for exposing the electronic component and feeding to a picking position. Furthermore a first guiding part which is provided at the upstream side and above the material loading strip compared with the stripping part so that the external sealing belt after stripping is crossed with the material loading belt in midway for guiding the material loading belt downwards thereby discharging the external sealing belt through a discharging unit. The belt-type feeder is provided with a second guiding part which guides the external sealing belt guided from the first guiding part, a third guiding part which guides the external sealing belt guided from the second guiding part to the discharging unit, so that a guiding surface of the second guiding part, which contacts with the belt surface of the external sealing belt for guiding the external sealing belt, is configured to inclined relatively to the feeding direction of the material loading belt.

Description

  The present invention sequentially feeds a tape feeder, particularly a carrier tape containing electronic components, peels off the cover tape at the downstream peeling portion to expose the electronic components, and supplies the electronic tape to the pickup position. The present invention relates to a tape feeder suitable for application when the carrier tape is crossed halfway from the upper position on the upstream side of the peeling portion and discharged to the lower position.

  In general, a so-called tape feeder is used when supplying electronic components to a surface mounting apparatus for mounting electronic components on a printed circuit board. In such a tape feeder, as a medium for supplying electronic components, the electronic components are respectively accommodated in recesses formed in a long bottom tape at regular intervals, and the long cover tape is placed on the bottom tape. The carrier tape which stuck and enclosed was used.

  Usually, the carrier tape is fed out from the reel on which the carrier tape is wound, and the cover tape is peeled off at the peeling portion on the downstream side to supply the exposed electronic component to the pickup position downstream thereof. Yes.

  On the other hand, the cover tape peeled off at the peeling portion employs a method in which the carrier tape is once returned to the upstream side opposite to the feeding direction of the carrier tape, and then sent from the upper side to the lower side of the carrier tape to be discharged. However, it is disclosed in Patent Document 1, for example.

  An example of a tape feeder that employs such a system that feeds the cover tape from the upper position to the lower position of the carrier tape will be specifically described.

  FIG. 5 is a side view showing the main part of the tape feeder 1 employing this method, and FIG. 6 is a plan view thereof.

  In this tape feeder 1, when the carrier tape 2 fed out from a reel (not shown) is sent to the peeling portion 5 located on the downstream side, from the top surface of the bottom tape 3 in which the electronic component is accommodated in the recess (not shown), The cover tape 4 attached to enclose the electronic component is peeled off to expose the electronic component. When the electronic component is picked up at the downstream pickup position (not explicitly shown), the bottom tape 3 where the electronic component is exposed is further sent to the downstream side by the sprocket 6 and discharged in an empty state. .

  On the other hand, the cover tape 4 peeled off at the peeling portion 5 is sent to the upstream side opposite to the feeding direction of the carrier tape 2, and the first guide 7 disposed above the carrier tape 2 Guided while crossing halfway below the carrier tape 2, further guided by the second guide 8 and the third guide 9 on the downstream side, and forcibly discharged in the discharge direction by the pulling roller (discharge means) 10. It has become.

  As described above, in this type of tape feeder, the cover tape 4 between the first guide 7 and the third guide 9 and the carrier tape 2 fed out from the reel and fed in the direction of the peeling portion 5 are in the middle. In this intersecting position, the cover tape 4 passes in the vicinity of one side edge of the carrier tape 2, and the tape surface (front and back surfaces) of the cover tape 4 in the side edge, that is, the feed direction of the carrier tape 2. The second guide 8 (upstream side guide 8a, downstream side guide 8b) is configured so as to be substantially parallel to each other, and the front tape is guided to the first guide 7 by the third guide 9 on the downstream side. It is designed to return to the surface state.

Japanese Patent No. 2519589

  However, in the tape feeder 1, in order to suppress the increase in the width direction dimension of the apparatus itself and achieve a reduction in the width, the carrier tape 2 and its carrier tape 2 are positioned at the position where the cover tape 4 intersects the carrier tape 2 as described above. As shown in FIG. 7, an enlarged image of the cross-sectional state of the cover tape 4 near the upper surface passes through the vicinity of one side edge 2 a of the carrier tape 2, and the side edge 2 a (feed direction of the carrier tape 2). ). For this purpose, the guide surface of the second guide 8 that contacts the tape surface of the cover tape 4 and guides the cover tape is made parallel to the feed direction of the carrier tape 2, and the second guide 8 (on the upstream side and the downstream side). The cover tape 4 needs to be twisted by approximately 90 ° from the state guided by the first guide 7 by the two rollers 8a and 8b).

  5 is an enlarged image of the state where the upstream roller 8a is viewed from the first guide 7 indicated by the arrow C in FIG. 5, and the state where the downstream roller 8b is viewed from the third guide 9 indicated by the arrow D. 8A and 8B, in the case of the first guide 7, the cover tape 4 guided by the guide surface (circumferential surface) 7s of the roller and the upstream roller of the second guide 8 The tape surfaces of the cover tape 4 guided by the guide surface 8as of 8a are arranged so that the rotation shaft centers 7c and 8ac of the two rollers are orthogonal to each other as shown in black. Similarly, in the case of the third guide 9, the shaft centers of both rollers are arranged to be orthogonal to each other.

  In this way, the cover tape path A2 between the first guide 7 and the third guide 9 is sufficiently long in order to smoothly return the cover tape 4 to the original direction after twisting the tape surface of the cover tape 4 by 90 °. It is necessary to secure it. Therefore, in order to set the cover tape 4 and the like together with the carrier tape 2 in a predetermined state so that the electronic parts can be supplied by the tape feeder 1, the cover tape 4 is pulled to the tension roller 10 and set. At the same time, the carrier tape 2 must be hooked on the sprocket 6. Therefore, it is necessary to peel off this cover tape by the peeling part 5, and the length to the roller 10 will become long. The carrier tape 2 substantially corresponding to this length must also be passed over the component adsorbing part and the sprocket 6, and the electronic parts in the carrier tape are also wasted depending on the length of the cover tape 4. There was a problem of doing.

  The present invention has been made to solve the above-mentioned conventional problems, and even if a method is adopted in which the cover tape peeled off at the peeling portion intersects with the carrier tape on the upstream side and is discharged downward, the preparatory stage. It is an object of the present invention to provide a tape feeder that can reduce electronic parts that are wasted when setting a tape as much as possible.

The present invention sequentially feeds the carrier tape, peels the cover tape from the carrier tape at the downstream peeling portion, exposes the accommodated electronic components and supplies them to the pickup position. In the tape feeder in which the first guide disposed above the carrier tape on the upstream side of the peeling portion is guided in the middle and crossed downward, and then the cover tape is discharged by the discharge means on the downstream side. A second guide for guiding the cover tape guided by one guide; and a third guide for guiding the cover tape guided by the second guide to the discharge means; and the second guide, upstream guide and the downstream guide which guide surface is arranged parallel to each other in contact with the tape surface of the cover tape for guiding the cover tape Has the door, each guide surface of the upstream-side guide and the downstream guide, by said relative feeding direction of the carrier tape is inclined to an angle smaller than 90 ° and so is arranged, said object Is a solution.

  According to the present invention, the first guide disposed above the carrier tape guides the cover tape by contacting the tape guide with the second guide for guiding the cover tape guided in the middle and intersecting the lower part. Since the guide surface to be tilted with respect to the feeding direction of the carrier tape, the angle at which the tape surface of the cover tape is twisted from the entrance side state of the first guide by the second guide is made smaller than 90 °. Therefore, since the distance between the first guide and the third guide can be shortened by that amount, it is possible to reduce electronic components that are wasted when setting a carrier tape or the like on the tape feeder.

The side view which shows typically the principal part of the tape feeder of one Embodiment which concerns on this invention The top view which shows typically the principal part of the tape feeder of this embodiment The schematic diagram which shows the positional relationship of the carrier tape in this embodiment, and the cover tape in an intersection position The schematic diagram which shows the positional relationship of each of the 1st guide and 3rd guide in this embodiment, and a 2nd guide. Side view schematically showing main parts of a tape feeder as a comparative example The top view which shows typically the principal part of the tape feeder as a comparative example The schematic diagram which shows the positional relationship of each of the 1st guide and 3rd guide in a comparative example, and a 2nd guide. The schematic diagram which shows the positional relationship of the carrier tape in a comparative example, and the cover tape in an intersection position

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view corresponding to FIG. 5 showing a main part of a tape feeder according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.

  The basic structure of the tape feeder of the present embodiment is the same as that shown in FIGS. 5 and 6, and the carrier tape 2 is sequentially fed and covered from the carrier tape 2 by the peeling portion 5 on the downstream side. The tape 4 is peeled off, and the accommodated electronic component (not shown) is exposed and supplied to the pickup position closest to the downstream of the peeling portion 5, and the peeled cover tape 4 is disposed upstream of the peeling portion 5. The first guide 7 disposed above the tape 2 is crossed halfway and guided downward, and then is discharged by a downstream tension roller (discharge means) 10.

  In this embodiment, the second guide 8 that guides the cover tape 4 guided by the first guide 7 to the downstream side, and the cover tape 4 guided further downstream by the second guide 8, The second guide 8 has a guide surface that contacts the tape surface (front surface or back surface) of the cover tape 4 and guides the cover tape 4. The carrier tape 2 is disposed so as to be inclined at an angle smaller than (90 °) perpendicular to the feeding direction of the carrier tape 2.

  The second guide 8 has an upstream guide 8a and a downstream guide 8b having guide surfaces arranged in parallel to each other. Here, all of the first to third guides are composed of rollers that rotate about the axis, and therefore the guide surface of each guide is a roller peripheral surface that contacts the tape surface of the cover tape 4.

  The tape feeder of this embodiment will be described in more detail. At a position where the cover tape 4 peeled from the bottom tape 3 at the peeling portion 5 intersects with the carrier tape 2, as shown as an inclination θ in the plan view of FIG. The second guide 8 is inclined at an angle smaller than 90 ° orthogonal to the longitudinal direction (feed direction) of the carrier tape 2, for example, 10 ° or more.

  In order to make this state easy to understand, the state where the upstream guide 8a is faced from the first guide 7 indicated by an arrow A in FIG. 1 and the state where the downstream guide 8b is faced from a third guide 9 indicated by an arrow B in FIG. Are shown in FIGS. 3A and 3B corresponding to FIGS. 8A and 8B, respectively.

  That is, the upstream guide 8a is disposed with the rotation center 8ac inclined such that the guide surface 8as is inclined with respect to the direction orthogonal to the guide surface 7s of the first guide 7, that is, the feeding direction of the carrier tape 2. Has been. The downstream guide 8b is the same in the reverse direction.

  Accordingly, when the cover tape 4 passes through the upstream guide 8a, the second guide 8 is arranged so that the cover tape 4 is slightly displaced in the width direction with respect to the carrier tape 2 as indicated by G in FIG. A side guide 8a is provided. As a result, the twist angle when the cover tape 4 is passed from the first guide 7 to the second guide 8 and from the second guide 8 to the third guide 9 is shown in FIG. As shown in FIG. 7, the angle is smaller than 90 ° in the parallel case shown in FIG.

  In the above configuration, the carrier tape 2 is divided into the bottom tape 3 and the cover tape 4 at the peeling portion 5, and the bottom tape 3 is passed through the tape feeder 1 by the sprocket 6 serving as the feeding means and discharged to the outside. On the other hand, the cover tape 4 peeled off at the peeling portion 5 can intersect the carrier tape 2 by the first guide 7 and the second guide 8 without interfering with the carrier tape 2, and the tension roller 10 passes through the third guide 9. Is discharged to the outside of the tape feeder.

  Therefore, according to this embodiment, the length of the cover tape 4 on the path between the first guide 7 and the third guide 9 indicated by A1 in FIG. 1 will be described with reference to FIGS. It can be made shorter than the case of the tape feeder.

  That is, when there is no “inclination” and “deviation” with respect to the feeding direction of the carrier tape 2 on the guide surface (axial center) of the second guide 8 shown in FIG. The cover tape 4 can be brought close to the side edge of the carrier tape 2 and “displacement” can be reduced. However, when the cover tape 4 is guided from the first guide 7 to the upstream guide 8a of the second guide 8, or from the downstream guide 8b of the second guide 8 to the third guide 9, the tape surface is returned to the original state. Since the cover tape 4 is twisted up to 90 ° when returning to the position, the path A2 of the cover tape 4 becomes longer than A1 in the present embodiment as the twist angle increases.

  According to the embodiment described in detail above, the guide surface of the second guide 8 having the upstream guide 8a and the downstream guide 8b composed of rollers whose rotational axes are arranged in parallel is fed to the carrier tape 4 By inclining at an angle smaller than 90 ° with respect to the direction, the twist angle with respect to the carrier tape feed direction on the path of the cover tape 4 can be reduced, and the feed path of the cover tape 4 can be shortened. It was.

  Accordingly, the width of the cover tape 4 is slightly smaller than when the tape surface of the cover tape 4 is parallel to the side edge of the carrier tape 2 in the feed direction, but the length when setting the tape such as the cover tape 4 is shortened. Therefore, waste of electronic components can be eliminated.

  In the above-described embodiment, the two rollers 8a and 8b are used as the second guide 8, and the cover tape 4 is guided to the second guide 8 by rolling contact. However, the present invention is not limited to this. The guide surface may be made of a material having a small coefficient and guided by sliding contact.

  Further, the two guides 8 a and 8 b included in the second guide 8 may not be arranged below the carrier tape 2, but the upstream guide 8 a may be arranged above the carrier tape 2.

  Further, the angle formed by the guide path of the cover tape 4 by the first guide 7 and the third guide 9 shown by an angle E in FIG. 1 and the carrier tape 2 intersecting with the guide path is arbitrary, and is 90 ° or less as shown in the figure. Not necessarily.

DESCRIPTION OF SYMBOLS 1 ... Tape feeder 2 ... Carrier tape 3 ... Bottom tape 4 ... Cover tape 5 ... Stripping part 6 ... Sprocket 7 ... 1st guide 8 ... 2nd guide 8a ... Upstream side guide 8b ... Downstream side guide 9 ... 3rd guide 10 ... Tension roller (discharge means)

Claims (1)

The carrier tape is sequentially fed, the cover tape is peeled off from the carrier tape at the downstream peeling portion, the accommodated electronic components are exposed and supplied to the pickup position, and the peeled cover tape is removed from the peeling portion. In the tape feeder that, after being guided by the first guide disposed above the carrier tape on the upstream side and crossing halfway, the cover tape is discharged by the discharge means on the downstream side,
A second guide for guiding the cover tape guided by the first guide; and a third guide for guiding the cover tape guided by the second guide to the discharging means;
The second guide has an upstream guide and a downstream guide, the guide surfaces contacting the tape surface of the cover tape to guide the cover tape and arranged in parallel with each other, the upstream guide and the downstream guide A tape feeder characterized in that each guide surface of the side guide is inclined at an angle smaller than 90 ° with respect to the feeding direction of the carrier tape.

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