JP6836766B2 - Carrier tape positioning device - Google Patents

Description

The present invention relates to a carrier tape positioning device.

Patent Document 1 describes a carrier tape positioning device that enables stable and highly accurate carrier tape transfer and positioning, and can cope with high speed taping systems and miniaturization of workpieces.
In this carrier tape positioning device, the base circumference of the pulley in which the involute curve tooth profile that fits into the circular feed hole provided for transport on the carrier tape is arranged on the circumference is an integer of the feed pitch of the carrier tape. The tooth profile, which is composed of doubles and is arranged on the circumference of the pulley, is characterized in that the tooth profile is arranged at the same pitch as the pitch of the feed hole.

JP-A-2007-326606

An object of the present invention is to provide a carrier tape positioning device for positioning a carrier tape using a side opposite to the side into which an electronic component of a pocket is inserted.

The present invention relates to a positioning device of the carrier tape formed with a plurality of recessed pockets and feed holes are respectively along the longitudinal direction of the electronic components on the surface side is inserted in contact with the back side of the pocket, the carrier tape A rotary stopper portion that restricts the movement of the carrier tape in the traveling direction, a feed portion that is provided on the side of the carrier tape in the traveling direction of the carrier tape and has a plurality of protrusions that fit into the feed hole, and the feed portion. A control unit for positioning the rotation stopper unit at a stop target position before stopping the rotation operation of the unit is provided , and the rotation stopper unit has a traveling direction of the carrier tape when viewed from the surface side of the carrier tape. A disk member that rotates around intersecting rotation axes, and a contact member that is formed so as to protrude at intervals along the outer peripheral surface of the disk member and comes into contact with the surface of the pocket on the traveling direction side. It is a carrier tape positioning device having.

According to the present invention, it is possible to provide a carrier tape positioning device for positioning a carrier tape using a side opposite to the side into which the electronic component of the pocket is inserted.

It is a block diagram of the carrier tape positioning apparatus which concerns on one Embodiment of this invention. (A) to (C) are a plan view, a side view, and a rear view of the carrier tape positioned by the positioning device of the carrier tape, respectively. It is explanatory drawing of the rotation stopper part provided with the positioning device of the carrier tape. It is explanatory drawing of the guide part provided in the positioning device of the carrier tape.

Subsequently, an embodiment embodying the present invention will be described with reference to the attached drawings, and the present invention will be understood. In the figure, parts not related to the description may be omitted.

The carrier tape positioning device 10 according to the embodiment of the present invention can position the carrier tape 12 shown in FIG.
As shown in FIGS. 2A to 2C, the carrier tape 12 has a plurality of concave pockets 122 formed on the surface side along the longitudinal direction. The electronic component 16 transported by the transport collet 14 is inserted into these pockets 122. The electronic component 16 is, for example, a 0402 size chip resistor or chip capacitor.
As shown in FIG. 2A, the carrier tape 12 is formed with a plurality of feed holes 124 for feeding the carrier tape 12 along the longitudinal direction.

As shown in FIG. 1, the carrier tape positioning device 10 includes a feed unit 20, a rotation stopper unit 30, a control unit 40, and a guide unit 50.

The feed portion 20 is a disk-shaped member, and a plurality of protrusions 202 that fit into the feed holes 124 formed in the carrier tape 12 are formed. These protrusions 202 are provided at intervals along the outer peripheral surface of the feed portion 20.
The feed portion 20 causes the carrier tape 12 to fit in the feed hole 124 and rotate around a rotation axis AX1 that intersects the traveling direction of the carrier tape 12 when viewed from the surface side (upper side) of the carrier tape 12. It can be sent in the A direction. The feed portion 20 is provided on the side of the carrier tape 12 in the traveling direction (downstream side in the feed direction of the carrier tape 12) with respect to the rotation stopper portion 30, and is driven by a servomotor (not shown).
The carrier tape 12 fed by the feed unit 20 is sealed with the cover tape 126 after the electronic component 16 is inserted into the pocket 122, and is wound around the reel 80.

As shown in FIG. 3, the rotation stopper portion 30 can come into contact with the back side of the pocket 122 to limit the movement of the carrier tape 12 in the traveling direction (A direction).
The rotation stopper portion 30 has a disk member 302 and a contact member 304.
The disk member 302 is a disk-shaped member, and can rotate around the rotation axis AX2 that intersects the traveling direction of the carrier tape 12 when viewed from the surface side of the carrier tape 12. The disk member 302 is driven by a servomotor (not shown).
A plurality of contact members 304 are formed so as to project along the outer peripheral surface of the disk member 302 at intervals. The contact member 304 is an outer surface on the side opposite to the side where the electronic component of the pocket 122 is inserted and can come into contact with the surface 127 on the side in the traveling direction.
The widthwise dimension of each contact member 304 is set to be larger than the widthwise dimension L (see FIG. 2C) on the back side of the pocket 122.

The shape of the rotation stopper portion 30 is determined in consideration of the pitch dimension P (see FIG. 3) of the pocket 122 and the number of contact members 304.
Further, it is preferable that the disk member 302 and the contact member 304 are integrally formed.

The control unit 40 (see FIG. 1) is a controller and a servo amplifier that control a servomotor (not shown) for driving the feed unit 20 and a servomotor (not shown) for driving the rotation stopper portion 30, respectively, and the feed unit 20. And the rotation operation of the rotation stopper portion 30 can be controlled respectively.

As shown in FIG. 4, the guide unit 50 can limit the movement of the carrier tape 12 in the width direction and guide the carrier tape 12.
The guide portion 50 has a reference guide 502, a roller 504, a movable base 506, and a tension spring 508.

The reference guide 502 is fixed to a frame (not shown) and comes into contact with the surface 128 on the back side of the pocket 122 of the carrier tape 12 where the feed hole 124 is located.
The roller 504 rotates around the rotation shaft AX3 extending in the vertical direction, and the outer peripheral surface contacts the end surface 129 on the side opposite to the side where the feed hole 124 of the carrier tape 12 is located.
The movable base 506 has a roller 504 mounted on its upper surface and can slide in a direction (C direction) intersecting the traveling direction of the carrier tape 12 with respect to a base member 509 fixed to a frame (not shown).
One end of the tension spring 508 is attached to the movable base 506 and the other end is attached to the base member 509, and a force can be applied so that the movable base 506 moves in the B direction. Therefore, the roller 504 mounted on the movable base 506 comes into contact with the end surface 129 of the carrier tape 12, and the surface 128 on the back side of the pocket 122 is pressed against the reference guide 502.

Next, the operation of the carrier tape positioning device 10 will be described. The carrier tape positioning device 10 can position the carrier tape 12 according to the following steps. However, if possible, the steps may be performed in a different order or in parallel.

(Step S1)
In operating the carrier tape positioning device 10, the reference positions of the feed portion 20 and the rotation stopper portion 30 are set in advance.
First, at the insertion position where the electronic component 16 is inserted, the surface 127 (see FIG. 3) on the back side of the pocket 122 is abutted against the contact member 304 of the rotation stopper portion 30.
Next, in this state, the control unit 40 shown in FIG. 1 rotates the feed unit 20 while controlling the torque, and applies a tension of an appropriate magnitude in the A direction to the carrier tape 12.
In this step, the positions in this state are set as the reference positions of the feed unit 20 and the rotation stopper unit 30, and the set reference positions are stored in the control unit 40.

(Step S2)
The control unit 40 (see FIG. 1) synchronously controls the rotation of the feed unit 20 and the rotation stopper unit 30 with reference to the reference position determined in step S1. That is, the feed portion 20 rotates and the rotation stopper portion 30 rotates.
The carrier tape 12 is fed in the direction of the reel 80 (direction A shown in FIG. 1) by rotating the feed portion 20 and fitting the protrusion 202 into the feed hole 124 (see FIG. 2).

(Step S3)
The next contact member 304 stops at the positioning position until the subsequent pocket 122 (see FIG. 3) reaches the insertion position of the electronic component 16. That is, the control unit 40 (see FIG. 1) positions the rotation stopper unit 30 at a command position that is a stop target position before stopping the rotation operation of the feed unit 20.

(Step S4)
When the feeding portion 20 is stopped, the carrier tape 12 is also stopped, and the surface 127 (see FIG. 3) on the back side of the pocket 122 is stopped in a state of being in contact with the contact member 304. In this way, the carrier tape 12 is accurately positioned by the surface 127 on the back side of the pocket 122 abutting against the contact member 304.
The insertion position of the carrier tape 12 in the width direction is within a range predetermined by the guide portion 50 shown in FIG.

(Step S5)
The transport collet 14 (see FIG. 1) inserts the electronic component 16 into the pocket 122 positioned at the insertion position.

After that, by repeating steps S2 to S5, the carrier tape 12 repeats running and stopping, and the electronic component 16 is inserted into the pocket 122.
As a result, the carrier tape 12 sealed with the cover tape 126 is wound around the reel 80.

Here, the positioning accuracy of the carrier tape 12 is affected by the processing accuracy of the contact member 304 included in the rotation stopper portion 30 shown in FIG.
Therefore, the control unit 40 (see FIG. 1) can correct the rotation position command that is the stop target position of the rotation stopper unit 30 to suppress the influence of this machining accuracy.
Specifically, a camera (not shown) is installed above the rotation stopper portion 30, each contact member 304 is sequentially positioned at a target position in advance, and all the contact members 304 positioned by this camera are imaged and actually Measure the amount of rotation position deviation δ between the position positioned in and the rotation position command (stop target position). The control unit 40 can position the pocket 122 more accurately by correcting the target position command of each contact member 304 based on the rotational position deviation amount δ of each contact member 304.

As described above, according to the carrier tape positioning device 10, positioning is performed using the pocket 122 having a smaller dimensional error instead of the feed hole 124 of the carrier tape 12, so that the pocket 122 can be positioned more accurately. The possibility that the transport collet 14 fails to insert the electronic component 16 is reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions that do not deviate from the gist are within the scope of the present invention.

10 Carrier tape positioning device 12 Carrier tape 14 Transport collet 16 Electronic component 20 Feeding part 30 Rotating stopper part 40 Control part 50 Guide part 80 Reel 122 Pocket 124 Feeding hole 126 Cover tape 127, 128 Face 129 End face 202 Protrusion 302 Disk member 304 Contact member 502 Reference guide 504 Roller 506 Movable base 508 Tension spring 509 Base member AX1, AX2, AX3 Rotating shaft

Claims (1)

Recessed pockets and perforations on which the electronic component is inserted into the front surface side, respectively a positioning device of the carrier tape which is plurally formed along the longitudinal direction,
A rotary stopper that contacts the back side of the pocket and restricts the movement of the carrier tape in the traveling direction .
A feed portion provided on the side of the carrier tape in the traveling direction with respect to the rotation stopper portion and having a plurality of protrusions fitted in the feed holes.
A control unit for positioning the rotation stopper unit at a stop target position before stopping the rotation operation of the feed unit is provided .
A disk member in which the rotation stopper portion rotates around a rotation axis that intersects the traveling direction of the carrier tape when viewed from the surface side of the carrier tape.
A carrier tape positioning device having a contact member formed by projecting a plurality of protrusions along the outer peripheral surface of the disk member at intervals and in contact with a surface of the pocket on the traveling direction side.