JP5271687B2 - Electric tape feeder - Google Patents

Abstract

The present invention provides an electric belt type feeder. A device body can be set to smaller or equal with the width of the feeding strips which are arranged approximately. In the electric belt type feeder, a feeding strip feeding mechanism comprises the following components: a supporting plate which is fixed to the inside of a width direction of a base body frame; a left sprocket wheel and a right sprocket wheel which are rotatably supported on a left surface and a right surface of the supporting plate, which are relatively to the feeding direction; a left worm wheel and a right worm wheel which are respectively fixed to each sprocket wheel coaxially; a left worm and a right worm which are engaged with each worm wheel and has rotation shafts that are respectively supported on a supporting component fixed to the supporting plate rotatably; a left driven side gear and a right driven side gear which are respectively fixed to the rotation shaft of each worm wheel; a left driving side gear and a right driving side gear which are respectively engaged with each driven side gear; and a left driving motor and a right driving motor which respectively cause each driving side gear to rotate.

Description

  The present invention relates to an electric tape feeder, and more particularly to a multi-type electric tape feeder that is suitable for application when supplying a plurality of electronic components in parallel.

  For example, Patent Document 1 discloses a multi-type electric tape feeder that supplies a plurality of electronic components in parallel, by arranging two rows of tape feeding mechanisms, thereby reducing the width dimension of the feeder. .

  FIG. 1 shows a side arrangement centering on a motor 120 and a sprocket 122 constituting a tape feeding mechanism which is a main part of two feeder units (component supply units) of the electric tape feeder, respectively, with A and B attached thereto. FIG. 2 shows the positional relationship between the two and the drive-side bevel gear 121 as seen from the direction of the arrow AA in FIG.

  Each sprocket 122A, 122B is coaxially arranged with a driven bevel gear b, and shares the axis C1 of the rotating shaft. The motors 120A and 120B corresponding to these have a radial arrangement in which the axial directions of the respective rotation axes a are made to coincide with the axis C1.

  Each of the motors 120A and 120B arranged in a radial manner as described above has an arrangement in which the respective rotation axis directions are distributed around the axis C1 at an angle α that does not overlap each other in the circumferential direction.

  In recent years, in order to supply electronic components to an electronic component mounting apparatus, as described above, a motor-driven tape feeder having a tape feed drive motor in the tape feeder itself has been used. The motor drive type is excellent in that the feed pitch and stop position at the time of tape feeding can be freely adjusted by motor control.

  Also, in order to make the electronic component mounting apparatus itself compact, a plurality of tapes are used by one tape feeder as disclosed in Patent Document 1 for the purpose of reducing the arrangement pitch of the tape feeders to be mounted. Multi-type tape feeders that supply electronic components are used. This is because the occupation width per lane can be made smaller than a plurality of 1-lane type tape feeders using one carrier tape, and the cost can be reduced by increasing the number of lanes.

Japanese Patent Laid-Open No. 2004-22868

  However, even if there is a merit by increasing the number of lanes, the width of the tape feeder itself inevitably increases as the number of tapes used increases. Under such circumstances, to achieve a more compact electric tape feeder, it is desirable to make the feeder width equal to or less than the tape width, but it is difficult considering the constraints on the dimensions of components and the performance of the motor. In particular, the two-lane type tape feeder disclosed in Patent Document 1 adopts a mechanism for rotating the sprocket by a drive motor via a bevel gear even if it is attempted to achieve a compact size. There was a problem that it was impossible due to its limitations.

  The present invention has been made to solve the above-mentioned conventional problems, and provides an electric tape feeder provided with a multi-type tape feeding mechanism capable of making the maximum width of the apparatus main body equal to or less than a substantially arranged tape width. This is the issue.

The present invention relates to a two-lane type electric tape feeder having a tape feeding mechanism that sequentially feeds a carrier tape containing electronic components by a sprocket rotatably supported on a base frame in the tape feeding direction and supplies the electronic components. The tape feeding mechanism includes a support plate fixed to the inside of the base frame in the width direction, left and right sprockets rotatably supported on the left and right sides of the support plate with respect to the feed direction, and each sprocket. The left and right worm gears that are coaxially fixed, the left and right worm gears that mesh with each worm wheel and that are rotatably supported by the support members that are fixed to the support plate, and the rotation shafts of the worm gears, respectively. Fixed left and right driven gears and left and right drive meshing with each driven gear A gear, with and a driving motor of the left and right rotating respectively the drive gear, the support plate is fixed to the center position in the width direction of the base frame, the width of the base frame, in the sprocket position The width of the two tapes is small enough to fit, and at the position other than the sprocket placement position, the two tapes are arranged so as to intersect each other in the width direction so that the width is smaller than the width of the two tapes. As a result, the above-described problems have been solved.

  In the present invention, it is preferable that the left and right drive motors are disposed so that the output shafts substantially coincide with the center in the width direction of the base frame.

  According to the present invention, the sprocket is rotatably supported integrally with the worm wheel coaxially fixed on both surfaces of the support plate fixed to the inner side in the width direction of the base frame constituting the apparatus body, and each sprocket is supported by the corresponding worm. Since the rotation is performed via the wheel and the worm gear driven by the motor, the width of the tape feeding mechanism can be further reduced compared with the case where the rotation is performed using the bevel gear.

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

  FIG. 3 is a side view showing an outline of the electric tape feeder of one embodiment according to the present invention.

  In the electric tape feeder of the present embodiment, a tape feeding mechanism 1 which will be described in detail later is fixed to the right end side of the base frame 100 in the drawing, and the carrier tape T is fed from the upstream side on the left in the drawing by the tape feeding mechanism 1. In the middle, the cover tape (not shown) is peeled off to expose the electronic component, and then the bottom tape Tb that has been emptied by picking up the electronic component at the pickup position (not shown) is removed. Discharged downstream.

  On the other hand, the cover tape peeled off in the middle is discharged by a scraping unit 103 having a scraping roller 102 while being tensioned by a tension reel 101 in a direction opposite to the bottom tape Tb. In the following description, the same reference numeral 2 is used for the carrier tape and the bottom tape, and the two are also simply referred to as “tape” without distinguishing between the two.

  In the present embodiment, as shown in FIG. 4, the tape feeding mechanism 1 schematically shows a right side view including a tape, and FIGS. 5 and 6 are enlarged left and right perspective views. The support plate 3 is fixed to the inner side in the width direction. In addition, in the following, when the positional relationship between the left and the right with respect to the tape feeding direction is clearly shown for the support plate 3, the subscripts L and R are added as a general rule.

  The left and right sprockets 4L and 4R and the left and right worms are coaxially fixed to the sprockets 4L and 4R, respectively, which are formed in substantially the same configuration on both the left and right sides of the support plate 3 with respect to the feed direction. Wheels 5L and 5R are provided. Here, the left and right sprockets 4L, 4R have the same diameter and are supported coaxially.

  The worm wheels 5L and 5R have left and right worm gears 7L each having a worm gear shaft (rotary shaft) 7A rotatably supported by worm gear shaft blocks (support members) 6L and 6R fixed to the support plate 3, respectively. , 7R are meshed.

  The left and right driven pinion gears 10L and 10R fixed to the drive side of the rotating shaft 7A of each worm gear 7L and 7R, and the left and right drive side pinion gears 10ML respectively meshed with the driven side pinion gears 10L and 10R, respectively. 10MR and left and right feed motors (drive motors) 8L and 8R for rotating the drive side pinion gears 10ML and 10MR, respectively.

  FIG. 7 shows an enlarged view of the relationship of the tape 2 as viewed from the direction of arrow A in FIG. 4 for the two-lane electric tape feeder having the tape feeding mechanism 1 of the present embodiment having the above-described configuration.

  In the present embodiment, a specific example in which a tape feeder is housed in a width in which two approximately 8 mm tapes 2 called 8 mm tapes are arranged to reduce the size and weight will be described in detail.

  As shown in this figure, the distance between the sprockets in consideration of the maximum width deviation of the tape 2 to be used, that is, the dimension between the tapes of the hole H into which the pin of the sprocket is fitted when the tape is fed is approximately 8.5 mm. Set to. As shown in the drawing, the maximum tape width at this time is set to 8.3 mm in consideration of errors, and the tape interval is set to 0.2 mm. In addition, this sprocket space | interval should just be more than the minimum dimension which can be arrange | positioned without interference of two tapes.

  In the present embodiment, as described above, the left and right sprockets 4L, 4R are fixed to the left and right of the support plate 3 so that the rotation shaft 9 is the same. The rotation of the drive motor 8 is caused by rotating the worm wheel 5 by rotating the worm gear 7 via the drive-side pinion gear 10M and the driven-side pinion gear 10 at the tip of the output shaft. Rotate.

  By adopting the pinion gears 10 and 10M in this way, the shaft reaction force generated in the worm gear 7 is not directly received by the motor output shaft.

  8 shows a part of the tape 2 and FIG. 9 shows a plan view of the tape feeding mechanism 1 with the tape 2 removed, the left and right drive motors 8L and 8R are arranged in the width direction of the tape feeder. The diameters of the pinion gears on the driving side and the driven side are adjusted so that the rotation shaft (output shaft) coincides with the center, and they are arranged so as to be almost completely overlapped.

  The drive motors 8L and 8R are arranged so as to be shifted in the vertical direction so that the motors do not interfere with each other. However, in the vertical direction of the tape feeder, the drive motors 8L and 8R are substantially aligned as shown in the figure. At this time, the worm gear shaft 7 </ b> A is arranged in parallel with the output shaft of each drive motor 8.

  Accordingly, although the specific shape is slightly different, FIG. 10 is a left perspective view of the feeder downstream end side, FIG. 11 is a perspective view of the tape feeding mechanism 1 separated from the base frame 100, and FIG. As shown in the right-side perspective view on the end side, the support plate 3 is fixed to the center position in the width direction of the base frame 100 with screws or the like, so that the drive motor 8 is dimensioned to fit within the width of the tape feeder.

As shown in FIG. 7, when two tapes 2 are arranged, the base frame 100 has a tape width, that is, the maximum width of the tape feeder fits within the two tape widths. That is, such a two-lane type of tape feeder, the width of the position other than the sprocket, the like to cross two tape width direction can be narrower than two sheets tape. Further, as shown in FIG. 10, the drive motors 8 </ b> L and 8 </ b> R are fixed to the base frame 100. However, this drive motor may be fixed to the support plate 3.

  According to the embodiment described above in detail, the following effects can be obtained.

(1) Since the 2-lane type tape feeder can be accommodated in the minimum width of two 8mm tapes arranged, the occupying width per lane can be reduced, so electronic parts are supplied by the tape feeder installed in the feeder bank. The number of tapes to be increased can be increased.

(2) Since the 2-lane type tape feeder can be accommodated in the minimum width in which two 8 mm tapes are arranged, the weight of the tape feeder per lane can be reduced.

(3) Since the number of tapes to be supplied by the tape feeder mounted on the feeder bank is increased, a large number of electronic components can be secured, so that it is possible to reduce feeder replacement at the time of changeover for replacing electronic components.

(4) Since the sprocket, the drive mechanism, and the drive motor are fixed to the common support plate 3, unitization is possible and a compact configuration can be achieved.

(5) Since the sprocket, the drive mechanism, and the drive motor are fixed to the common support plate 3, unitization is possible and maintenance can be improved.

  In addition, it cannot be overemphasized that the tape width applicable to the electric tape feeder of this invention is not limited to 8 mm shown as a specific example.

Side view showing outline of conventional tape feeding mechanism Top view of the tape feeding mechanism of FIG. The side view which shows the outline | summary of the electric tape feeder of one Embodiment which concerns on this invention The schematic side view including the tape which shows the tape feed mechanism of this embodiment Right direction schematic perspective view showing the tape feeding mechanism of this embodiment Left schematic perspective view showing the tape feeding mechanism of the present embodiment The enlarged plan view which shows only the state of the tape arranged in 2 rows sent by the tape feeding mechanism of 2 lanes of this embodiment The top view which shows the tape feed mechanism of this embodiment in the state by which a part of tape was arrange | positioned FIG. 8 is a plan view showing the tape feeding mechanism with the tape removed from FIG. Left perspective view showing enlarged state of tape feed mechanism fixed to base frame The perspective view which shows the state which isolate | separated the tape feeding mechanism from the base frame of FIG. Right direction perspective view corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tape feed mechanism 2 ... Tape 3 ... Support plate 4 ... Sprocket 5 ... Worm wheel 6 ... Worm gear shaft block (support member)
7 ... Worm gear 8 ... Feed motor (drive motor)
DESCRIPTION OF SYMBOLS 9 ... Rotating shaft 10 ... Drive side pinion gear 10M ... Drive side pinion gear 100 ... Base frame L, R ... Subscript showing left and right

Claims (2)

In a two-lane type electric tape feeder having a tape feeding mechanism that sequentially feeds carrier tapes in which electronic components are accommodated by a sprocket rotatably supported by a base frame in the tape feeding direction and supplies the electronic components,
The tape feeding mechanism is
A support plate fixed inside in the width direction of the base frame;
Left and right sprockets rotatably supported on both left and right sides of the support plate with respect to the feed direction;
Left and right worm wheels fixed coaxially to each sprocket,
Left and right worm gears that are meshed with each worm wheel and are rotatably supported by the support member fixed to the support plate.
Left and right driven gears respectively fixed to the rotation shafts of the worm gears;
Left and right drive side gears respectively meshing with each driven side gear;
And left and right drive motors that rotate each drive side gear ,
The support plate is fixed at the center position in the width direction of the base frame,
The width of the base frame is formed such that the width of two tapes can be accommodated at the sprocket arrangement position, and the two tapes are arranged so as to intersect each other in the width direction except for the sprocket arrangement position. An electric tape feeder characterized in that it is formed in a size narrower than the width of the tape.   2. The electric tape feeder according to claim 1, wherein the left and right drive motors are disposed with their output shafts substantially aligned with the center in the width direction of the base frame.

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