JP2012195401A - Tape feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and inexpensively provide a function for eliminating static voltage charged on a component supply tape in a narrow space which does not obstruct the component adsorbing action of a component mounting machine, in a tape feeder.SOLUTION: In a recessed groove 35 of a tape guide member 15 which forms a tape passage for guiding a component supply tape 12 to a component adsorbing position, an antistatic sheet 36 for eliminating static electricity charged on the component supply tape 12 is provided by bonding and the like. The antistatic sheet 36 is provided so as to contact or come close to the component supply tape 12 at least before the component adsorbing position. Furthermore, at a position contacting or coming close to at least a part immediately after peeling of a cover tape 21 peeled from the component supply tape 12, a cover tape antistatic sheet 37 is provided. Static electricity charged on at least the part immediately after the peeling of the cover tape 21 is eliminated by the cover tape antistatic sheet 37.

Description

  The present invention relates to a tape feeder having a function of removing static electricity charged in a component supply tape.

  In a tape feeder, static electricity is charged in the component supply tape due to friction between the component supply tape and the electronic components inside it, friction between the component supply tape and the feeder components, and peeling of the cover tape on the upper surface of the component supply tape. Then, due to the static electricity, the electronic components stick to the cover tape or jump out of the cavity of the component supply tape, and the suction of the electronic components by the suction nozzle of the component mounting machine is not stable. Parts can also break. In recent years, electronic parts have been reduced in size and weight, and the environment is likely to cause problems due to static electricity charged on the component supply tape.

  Therefore, in Patent Document 1 (Japanese Utility Model Publication No. 60-27499), a static voltage due to charging of a cover tape (top tape) peeled from a component supply tape is detected, and a high voltage of the same polarity larger than the detected voltage is detected. Is applied to the sprocket roller of the tape feed mechanism to prevent defective parts supply due to static electricity.

  Further, in Patent Document 2 (Japanese Utility Model Laid-Open No. 5-57900), a brush portion of a conductive tool whose one end is grounded is brought into contact with a carrier tape of a component supply tape from above in the vicinity of a component suction position. The charged static electricity is released to the ground side through a conductive tool to remove the static electricity from the carrier tape.

Japanese Utility Model Publication No. 60-27499 Japanese Utility Model Publication No. 5-57900

  In the above-mentioned Patent Document 1, a high voltage generator that applies a high voltage of the same polarity larger than the electrostatic voltage charged on the cover tape to the sprocket roller of the tape feed mechanism is required. There is a disadvantage that it becomes high.

  On the other hand, in Patent Document 2, since the brush part of the conductive tool is provided so as to contact the carrier tape from above in the vicinity of the component suction position, when the suction nozzle of the component mounter sucks the electronic component, the suction of the component mounter is performed. There is a possibility that a movable member such as a nozzle may interfere with the conductive tool. Moreover, it is troublesome to attach a conductive tool with a brush portion or to wire a ground wire in a narrow space near the component suction position.

  Therefore, the problem to be solved by the present invention is to provide a tape feeder that can easily and inexpensively provide a function of removing the electrostatic voltage charged on the component supply tape in a narrow space that does not interfere with the component adsorption operation of the component mounting machine. Is to provide.

  In order to solve the above-mentioned problem, the invention according to claim 1 sends a component supply tape formed by releasably attaching a cover tape on a carrier tape containing a large number of components at a predetermined pitch to a component suction position. In the tape feeder, the cover tape is peeled from the carrier tape before the component adsorption position to expose the component on the carrier tape, and the component is adsorbed to the adsorption nozzle of the component mounter at the component adsorption position. A static elimination sheet is provided in at least a part of the tape path through which the component supply tape passes to remove static electricity charged in the component supply tape in contact with or in proximity to the component supply tape. In this configuration, since the static electricity charged in the component supply tape can be removed with a simple configuration in which a static elimination sheet is provided in at least a part of the tape path through which the component supply tape passes, the static electricity charged in the component supply tape can be removed. The function of removing the voltage can be easily and inexpensively provided in a narrow space that does not interfere with the component adsorption operation of the component mounter.

  In this case, as described in claim 2, the tape passage may be configured to have a gap between the component supply tape and the charge removal sheet so as not to rub against each other. If the component supply tape and the static eliminating sheet rub against each other, the static eliminating sheet may be worn and the conductive material on the surface may be scraped off and float to adhere to the electronic component, thereby reducing the mounting reliability of the electronic component. there is a possibility. Therefore, if a configuration is adopted in which a gap is provided between the component supply tape and the static elimination sheet so that they do not rub against each other, the conductive material can be prevented from being scraped off from the static elimination sheet, and the mounting reliability of the electronic component can be improved. Decline can be prevented.

  Further, as described in claim 3, the static elimination sheet is preferably provided at least before the component suction position. Since the component supply tape is made of insulating resin or paper, if the neutralization sheet is too far from the component adsorption position, the neutralized part of the component supply tape that has been neutralized by the neutralization sheet will be placed at the component adsorption position. There is a possibility that static electricity will be charged again by the time it reaches. Therefore, if the component supply tape is neutralized at least before the component adsorption position, the component supply tape can be maintained in a neutralized state even at the component adsorption position, and problems such as poor adsorption of electronic components due to static electricity can be more reliably prevented.

  According to a fourth aspect of the present invention, there is provided a static electricity removing sheet for a cover tape that removes static electricity charged on the cover tape in contact with or in proximity to at least a portion of the cover tape peeled off from the carrier tape. good. The static electricity generated when peeling the cover tape from the carrier tape tends to attract the electronic components in the cavity of the carrier tape to the part immediately after peeling the cover tape. Is removed with a cover tape charge-removal sheet, electronic parts can be prevented from being adsorbed to the cover tape peeled off from the carrier tape, and problems such as poor adsorption of electronic parts due to static electricity can be more reliably prevented.

FIG. 1 is a side view of a tape feeder according to a first embodiment of the present invention. FIG. 2 is a side view of the main part of the tape feeder. FIG. 3 is a longitudinal front view of the tape path portion shown along line AA in FIG. FIG. 4 is a vertical side view of the component supply tape of the first embodiment. FIG. 5 is a longitudinal front view of the tape path portion of the second embodiment. 6 is a vertical side view of the component supply tape of Example 2. FIG.

  Hereinafter, two Examples 1 and 2 which embody the form for implementing this invention are demonstrated.

A first embodiment of the present invention will be described with reference to FIGS.
First, the structure of a tape feeder is demonstrated based on FIG.
A tape reel 13 around which a component supply tape 12 is wound can be detachably set on the front end side (right side in FIG. 1) of the feeder main body 11 of the tape feeder. A tape guide member 15 that forms a tape path for guiding the component supply tape 12 drawn from the tape reel 13 to the component suction position is attached to the upper surface of the feeder body 11.

  On the back side of the feeder main body 11 (left side in FIG. 1), a sprocket 16 that pitch-feeds the component supply tape 12 set on the tape guide member 15 to the component suction position, and a motor (not shown) that rotationally drives the sprocket 16. And a position directly above the rotation center of the sprocket 16 is a component suction position.

  A sprocket hole 17 (see FIG. 3) is formed at a constant pitch on one side edge of the component supply tape 12, and the sprocket 16 rotates while the teeth of the sprocket 16 are sequentially fitted into the sprocket hole 17. Thus, the component supply tape 12 is pitch-fed.

  As shown in FIGS. 1 and 2, a communication connector 18 connected to a connector (not shown) on the component mounter side and a component are provided on the rear end surface (left end surface in FIGS. 1 and 2) of the feeder main body 11. Positioning pins 19 and 20 for determining the mounting position with respect to the mounting machine are provided. Further, the feeder main body 11 is provided with cover tape feed rollers 22 to 24 for feeding the cover tape 21 (top tape) peeled off from the component supply tape 12 drawn from the tape reel 13.

  On the upper surface side of the tape guide member 15, a tape press cover (not shown) for suppressing the lifting of the component supply tape 12 that pitch-feeds to the component suction position is provided, and the sprocket hole 17 of the component supply tape 12 is provided by the tape press cover. The sprocket 16 is kept in mesh with the teeth of the sprocket 16. A slit (not shown) for peeling the cover tape 21 from the component supply tape 12 is formed near the component suction position of the tape pressing cover, and the cover tape 21 is drawn out through the slit. .

  The component supply tape 12 shown in FIG. 3 and FIG. 4 is a non-embossed type component supply tape called a so-called punch tape, and each component storage portion 32 (formed in a line at a constant pitch on a paper carrier tape 31). Each electronic component is accommodated in each cavity), and the cover tape 21 is peelably attached to the upper surface of the carrier tape 31 so that the upper surface opening of each component accommodating portion 32 is sealed with the cover tape 21. Has been. Each component accommodating portion 32 of the carrier tape 31 is formed by closing the bottom surface of a square hole punched in the carrier tape 31 with a bottom tape 33. The component supply tape 12 includes an embossed type component supply tape in addition to the punch tape (non-embossed type component supply tape). The configuration of the embossed type component supply tape will be described in Example 2 described later. .

  In the first embodiment, as shown in FIGS. 2 and 3, a concave groove portion 35 is formed along the path of the component supply tape 12 on the upper surface of the tape guide member 15, and the charge removal sheet 36 is formed in the concave groove portion 35. Is provided by bonding or the like. The static elimination sheet 36 is provided in at least a part of a tape passage through which the component supply tape 12 passes so as to be in contact with or close to the component supply tape 12. In the first embodiment, the static elimination sheet 36 is provided over almost the entire length of the tape guide member 15, but it is not always necessary to do so, and it may be provided at least before the component suction position.

  The static elimination sheet 36 may be formed of a conductive resin (for example, PTFE [polytetrafluoroethylene] or the like), or an organic conductive fiber in which copper sulfide is chemically bonded to a conductive fiber (for example, acrylic fiber / nylon fiber). , Metal plated fibers, metal-deposited fibers, carbon composite fibers, etc.) or a resin sheet to which a conductive substance (for example, conductive carbon particles) is added.

  Furthermore, in the first embodiment, as shown in FIG. 2, the cover tape neutralization sheet is in a position in contact with or close to at least a portion of the cover tape 21 peeled from the carrier tape 31 of the component supply tape 12 immediately after peeling. 37 is provided, and static electricity charged on at least a portion of the cover tape 21 immediately after peeling is removed by the cover tape neutralization sheet 37. The charge removal sheet 37 for the cover tape may be formed of the same charge removal sheet material as the charge removal sheet 36 or may be formed of a different charge removal sheet material.

  In the first embodiment described above, the static electricity charged in the component supply tape 12 can be removed with a simple configuration in which the static elimination sheet 36 is provided in at least a part of the tape path through which the component supply tape 12 passes. The function of removing the electrostatic voltage charged on the component supply tape 12 can be easily and inexpensively provided in a narrow space that does not interfere with the component adsorption operation of the component mounting machine.

  By the way, if the component supply tape 12 and the static elimination sheet 36 rub against each other, there is a possibility that the static elimination sheet 36 is worn and the conductive material on the surface is scraped off and floats and adheres to the electronic component. Reliability may be reduced. Accordingly, if the gap is provided between the component supply tape 12 and the charge removal sheet 36 so that they do not rub against each other, it is possible to prevent the conductive material from being scraped off from the charge removal sheet 36 and to mount the electronic component. Decrease in reliability can be prevented.

  Further, since the component supply tape 12 is formed of insulating resin or paper, if the neutralization sheet 36 is too far from the component adsorption position, the neutralization of the component supply tape 12 that has been neutralized by the neutralization sheet 36 is completed. There is a possibility that the static electricity will be charged again before the part reaches the component adsorption position. Therefore, if the static elimination sheet 36 is provided so that the component supply tape 12 is neutralized at least before the component adsorption position, the component supply tape 12 can be maintained in a neutralized state even at the component adsorption position, and electronic component adsorption failure due to static electricity, etc. The problem can be prevented more reliably.

  In addition, the electronic components in the component housing portion 32 of the carrier tape 31 are easily attracted to the portion immediately after the cover tape 21 is peeled off due to static electricity generated when the cover tape 21 is peeled off from the carrier tape 31. Therefore, if the static electricity charged in at least a portion of the cover tape 21 immediately after peeling is removed by the charge removing sheet 37 for the cover tape, the electronic component is prevented from being adsorbed to the cover tape 21 peeled off from the carrier tape 31. This can more reliably prevent problems such as poor adsorption of electronic components due to static electricity.

  In the first embodiment, the punch tape (non-embossed component supply tape) is used as the component supply tape 12. However, in the second embodiment of the present invention shown in FIGS. 5 and 6, the component supply tape 41 is embossed. A type of component supply tape 41 is used. The embossed type component supply tape 41 is formed on a resin carrier tape 42 so that component receiving portions 43 (embossed portions) protrude downward at a constant pitch, and each component receiving portion 43 has one electronic component. The cover tape 44 is detachably attached to the upper surface of the carrier tape 42 so that the upper surface opening of each component storage portion 43 is sealed with the cover tape 44.

  In the second embodiment, a concave groove 45 is formed on the upper surface of the tape guide member 15 so as to escape the component accommodating portion 43 protruding downward from the component supply tape 41. The bottom surface and both side surfaces (at least the bottom surface) of the concave groove 45 are formed. A neutralization sheet 46 is provided by bonding or the like. The static elimination sheet 46 is provided in at least a part of a tape passage through which the component supply tape 41 passes so as to be in contact with or close to the component supply tape 41. In the second embodiment, the static elimination sheet 46 is provided over almost the entire length of the tape guide member 15, but it is not always necessary to do so, and it is sufficient to provide it at least before the component suction position. As the charge removal sheet 46, the sheet described in the first embodiment may be used. Other configurations are the same as those of the first embodiment.

In the second embodiment described above, the same effect as that of the first embodiment can be obtained.
The present invention is not limited to the first and second embodiments, and can be implemented with various modifications without departing from the spirit of the invention, such as being widely applicable to various types of tape feeders.

  DESCRIPTION OF SYMBOLS 11 ... Feeder main body, 12 ... Non-embossed part supply tape (punch tape), 13 ... Tape reel, 15 ... Tape guide member (tape passage), 16 ... Sprocket, 17 ... Sprocket hole, 21 ... Cover tape, 22 24 ... Cover tape feeding roller, 31 ... Carrier tape, 32 ... Component storage, 33 ... Bottom tape, 35 ... Concave groove, 36 ... Static elimination sheet, 37 ... Static elimination sheet for cover tape, 41 ... Embossed type component supply tape, 42 ... Carrier tape, 43 ... Component housing, 44 ... Cover tape, 45 ... Concave groove, 46 ... Static elimination sheet

Claims (4)

A component supply tape, which is a cover tape that can be peeled and stuck on a carrier tape containing a large number of components at a predetermined pitch, is sent to the component suction position, and the cover tape is peeled from the carrier tape before the component suction position In a tape feeder that exposes the components on the carrier tape and adsorbs the components to the adsorption nozzle of the component mounting machine at the component adsorption position.
A tape feeder, wherein a static elimination sheet for removing static electricity charged on the component supply tape is provided in at least a part of a tape path through which the component supply tape passes.   2. The tape feeder according to claim 1, wherein the tape passage is configured to have a gap between the component supply tape and the charge removal sheet so as not to rub against each other.   The tape feeder according to claim 1 or 2, wherein the static elimination sheet is provided at least before the component suction position.   2. A charge removing sheet for a cover tape that removes static electricity charged in the cover tape in contact with or in proximity to at least a portion of the cover tape peeled from the carrier tape immediately after peeling. The tape feeder in any one of thru | or 3.

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