JP4387985B2 - Tape-shaped component winding device, winding method, and electronic component mounting device - Google Patents

Description

  The present invention relates to a tape-shaped part winding device for winding a carrier tape fed from a carrier tape supply reel onto a carrier tape take-up reel together with a spacer tape, a winding method, and an electronic component mounting apparatus using the winding device. About.

  For example, in TAB (Tape Automated Bonding), COF (Chip On Film), etc., an electronic component such as a semiconductor chip is mounted on a terminal portion formed on a film-like carrier tape, which is a tape-like component.

  Generally, a mounting apparatus for mounting an electronic component on the carrier tape has a carrier tape supply reel around which the carrier tape is wound. On the carrier tape, a device hole and a lead provided with one end projecting from the device hole are formed. Therefore, the carrier tape is wound around the carrier tape supply reel so as to overlap the spacer tape for protecting the lead.

  The carrier tape fed out from the carrier tape supply reel is guided to the transport rail, and is pitched by a predetermined size along the transport rail. A mounting portion is provided in the middle of the transport rail, and an electronic component is mounted on the carrier tape at the mounting portion. The spacer tape fed out together with the carrier tape from the carrier tape supply reel is taken up by the spacer tape take-up reel.

  Then, the carrier tape on which the electronic component is mounted in the mounting portion is overlapped with the spacer tape fed out from the spacer tape supply reel, and is wound around the carrier tape take-up reel.

Patent Document 1 discloses a tape winding device having the above-described configuration.
JP 2004-193259 A

  By the way, in the apparatus having the above-described configuration, when the carrier tape take-up reel is rotationally driven in the direction of winding up the carrier tape, the spacer tape supply reel is rotationally driven in the direction of feeding out the spacer tape. .

  The carrier tape take-up reel is driven to rotate when the amount of bending of the carrier tape exceeds a predetermined amount, and stops rotating when the amount of bending becomes less than a predetermined amount. Therefore, since the carrier tape is wound around the carrier tape take-up reel in a bent state, the carrier tape is wound up with almost no tension.

  However, the spacer tape is wound around the carrier tape take-up reel by rotating the carrier tape take-up reel in conjunction with the spacer tape supply reel, so that there is no tension between the carrier tape take-up reel and the spacer tape supply reel. It is in a state of joining.

  Therefore, when the carrier tape and the spacer tape are overlapped and taken up by the carrier tape take-up reel, if the carrier tape swings in the width direction of the carrier tape take-up reel, the carrier tape will move before the run-out returns. The tension tape is pressed against the core of the carrier tape take-up reel by the spacer tape to which the tension is applied, and is taken up.

  If such a winding state is continued, the positional deviation of the carrier tape gradually increases, and the deviation amount may eventually exceed the allowable range. Particularly recently, very thin carrier tapes of several tens of μm have been used. For this reason, the carrier tape is likely to swing in the width direction at the time of winding, and as described above, the carrier tape is likely to be displaced.

  The present invention relates to a winding device, a winding method, and an electronic device for a tape-shaped component that can wind up the carrier tape without causing a positional shift on the carrier tape take-up reel even if the carrier tape swings in the width direction. It is to provide a component mounting apparatus.

The present invention provides a carrier tape supply reel in which a carrier tape and a spacer tape are wound in an overlapping manner,
A spacer tape take-up reel that winds up the spacer tape fed out together with the carrier tape from the carrier tape supply reel;
A carrier tape take-up reel that winds up the carrier tape fed out from the carrier tape supply reel;
A spacer tape supply reel that supplies a spacer tape that is wound over the carrier tape when the carrier tape is taken up by the carrier tape take-up reel;
When the amount of sag of the carrier tape becomes equal to or greater than a predetermined value, the carrier tape take-up reel is rotationally driven to wind the spacer tape together with the carrier tape so that the spacer tape supply reel can rotate freely, and the carrier tape Control means for rotationally driving the spacer tape supply reel with a predetermined torque in a direction in which the spacer tape is taken up when winding by the carrier tape take-up reel is stopped when the amount of sag is less than a predetermined value. The tape-shaped part take-up device is characterized in that.

  The spacer tape supply reel is preferably driven to rotate by a torque motor capable of setting the rotational torque of the spacer tape supply reel.

The present invention is a mounting apparatus for mounting electronic components on a carrier tape,
A carrier tape supply reel in which the carrier tape and the spacer tape are overlapped and wound;
A spacer tape take-up reel that winds up the spacer tape fed out together with the carrier tape from the carrier tape supply reel;
A mounting portion for mounting the electronic component on the carrier tape fed out from the carrier tape supply reel;
A carrier tape take-up reel that winds up the carrier tape on which electronic components are mounted in this mounting section;
A spacer tape supply reel for supplying a spacer tape wound on the carrier tape when the carrier tape on which the electronic component is mounted is wound by the carrier tape take-up reel;
When the amount of sag of the carrier tape becomes equal to or greater than a predetermined value, the carrier tape take-up reel is rotationally driven to wind the spacer tape together with the carrier tape so that the spacer tape supply reel can rotate freely, and the carrier tape Control means for rotationally driving the spacer tape supply reel with a predetermined torque in a direction in which the spacer tape is taken up when winding by the carrier tape take-up reel is stopped when the amount of sag is less than a predetermined value. The electronic component mounting apparatus is characterized by the above.

The present invention includes a step of feeding out the carrier tape wound around the carrier tape supply reel;
A step of superimposing the spacer tape fed from the spacer tape supply reel on the carrier tape fed from the carrier tape supply reel and winding the carrier tape on the carrier tape take-up reel;
A step of rotating the carrier tape take-up reel when the amount of sag of the carrier tape is greater than or equal to a predetermined value, and rotating the spacer tape supply reel when winding the spacer tape together with the carrier tape; and
Rotating the spacer tape supply reel with a predetermined torque in a direction to wind up the spacer tape when the amount of sag of the carrier tape becomes less than a predetermined value and the winding by the carrier tape take-up reel is stopped. It is in the winding method of the tape-shaped component characterized by having.

  According to the present invention, when the carrier tape is wound around the carrier tape take-up reel together with the spacer tape, the spacer tape supply reel can be rotated freely, so that the carrier tape taken up by the carrier tape take-up reel is separated by the spacer tape. It is not pressed and held. For this reason, even if the carrier tape swings in the width direction during winding, the swing can be restored.

  Further, when the run-out of the wound carrier tape returns to its original state, the carrier tape and the spacer generated on the carrier tape take-up reel are rotated in order to rotate the spacer tape supply reel in a direction to wind up the spacer tape with a predetermined torque. The slack with the tape can be removed.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a mounting apparatus for mounting electronic components on a carrier tape 1. This mounting apparatus has an apparatus main body 2, which is provided with a loader section 3 at one end, an unloader section 4 at the other end, and a mounting section 5 at the center.

  The loader unit 3 has a carrier tape supply reel 7 around which the carrier tape 1 is wound. As shown in FIG. 2, the carrier tape 1 is formed with a terminal 8 having a device hole 8a and a lead 8b provided with one end protruding from the device hole 8a. Therefore, the carrier tape 1 is wound around the carrier tape supply reel 7 so as to overlap with the spacer tape 9a that protects the lead 8b of the terminal portion 8.

  The carrier tape 1 fed out from the carrier tape supply reel 7 is guided to the conveyance rail 13 and is taken up by the carrier tape take-up reel 23 described later from the conveyance rail 13. The transport rail 13 is provided from the loader unit 3 to the unloader unit 4.

  The carrier tape 1 is fed out from the carrier tape supply reel 7 so that a slack is generated between the carrier tape supply reel 7 and one end of the transport rail 13. The amount of sag of the carrier tape 1 is detected and controlled by the first lower sensor 15a and the first upper sensor 15b.

  That is, when the amount of sag of the carrier tape 1 increases and the first lower sensor 15a detects the sag, the delivery of the carrier tape 1 by the carrier tape supply reel 7 is stopped. When the sag of the carrier tape 1 is reduced and the sag is not detected by the first upper sensor 15b, the carrier tape 1 is fed out by the carrier tape supply reel 7. Thereby, the amount of sag of the carrier tape 1 is controlled to be within a predetermined range.

Note that the spacer tape 9 a fed out together with the carrier tape 1 from the carrier tape supply reel 7 is taken up by the spacer tape take-up reel 21.
In the mounting portion 5, an electronic component 16 such as a semiconductor chip is mounted on the carrier tape 1 as shown in FIG. The mounting unit 5 includes a mounting stage 17 that is driven in the X and Y directions and a mounting tool 18 that is driven in the X, Y, and Z directions.

  When the electronic component 16 is supplied onto the mounting stage 17, the mounting stage 17 is positioned below the terminal portion 8 of the carrier tape 1. Next, the mounting tool 18 is driven in the downward direction. Thereby, as shown in FIG. 3, the lead 8 b of the terminal portion 8 is bent and connected to the bump 16 a of the electronic component 16.

  The carrier tape 1 on which the electronic component 16 is mounted is intermittently fed at a predetermined pitch by a feed mechanism such as a sprocket (not shown) provided facing the transport rail 13. The carrier tape 1 on which the electronic component 16 is mounted and fed by the feeding mechanism is overlapped with the spacer tape 9 b supplied from the spacer tape supply reel 22 and is taken up by the carrier tape take-up reel 23. As a result, the electronic component 16 mounted on the carrier tape 1 is protected by the spacer tape 9b.

  When the electronic component 16 is mounted, the carrier tape 1 is intermittently fed by a predetermined length by a feed mechanism (not shown). On the unloader unit 4 side, the amount of sag of the carrier tape 1 intermittently fed is detected by the second lower sensor 24a and the second upper sensor 24b.

  As shown by the solid line in FIG. 4, when the amount of sag of the carrier tape 1 exceeds a predetermined value and this is detected by the second lower sensor 24a, the carrier tape take-up reel 23 is driven by the detection signal. Winding of the carrier tape 1 and the spacer tape 9b is started. As shown by the solid line in FIG. 5, when the winding is started and the amount of sag of the carrier tape 1 is reduced and the second upper sensor 24b does not detect the carrier tape 1, the winding is stopped.

  As indicated by a chain line in FIG. 1, the carrier tape supply reel 7 is driven to rotate by a first drive motor 26, and the spacer tape take-up reel 21 is driven to rotate by a second drive motor 27.

  The carrier tape take-up reel 23 is rotationally driven by a third drive motor 28, and the spacer tape supply reel 22 is rotationally driven by a fourth drive motor 29.

  The second drive motor 27 and the fourth drive motor 29 are torque motors, and have a motor 29a and a torque setting portion 29b provided on the output side of the motor 29a as shown in FIG. The spacer tape take-up reel 21 and the spacer tape supply reel 22 are rotationally driven with the torque set by the torque setting unit 29b.

  That is, when a torque of almost the same value as the value set by the torque setting unit 29b is applied to the spacer tape take-up reel 21 and the spacer tape supply reel 22, the torque is balanced and the spacer tape take-up reel 21 and The rotation of the spacer tape supply reel 22 is stopped.

  Further, the second and fourth drive motors 27 and 29 have their rotary shafts in a freely rotatable state when not driven (when not energized). That is, the spacer tape take-up reel 21 and the spacer tape supply reel 22 can be rotated without resistance so that they can rotate freely.

  As shown in FIG. 7, detection signals from the first lower sensor 15 a, the first upper sensor 15 b, the second lower sensor 24 a, and the second upper sensor 24 b are input to the control device 31. The control device 31 controls the driving of the first to fourth drive motors 26 to 29 based on detection signals from the sensors as described later.

  The unloader unit 4 of the mounting apparatus is provided with a manual punching die 33 as shown by a chain line in FIG. The mold 33 is used for punching out the portion of the carrier tape 1 where the electronic component 16 is mounted when the mounting portion 5 inspects the mounting state of the electronic component 16 mounted on the carrier tape 1.

  At that time, the portion of the carrier tape 1 on which the electronic component 16 is mounted is sent to the unloader unit 4 and punched out by the mold 33. After punching, the carrier tape 1 is sent to the loader unit 3 side to return the carrier tape 1 to its original state, and the mounting is continued. When the carrier tape 1 is fed in the reverse direction, the loader unit 3 becomes an unloader unit, and the unloader unit 4 becomes a loader unit. The carrier tape 1 is conveyed in the reverse direction also at the time of inspection when starting the work.

Next, the operation of the mounting apparatus having the above configuration will be described.
The carrier tape 1 and the spacer tape 9a are fed out from the carrier tape supply reel 7. The carrier tape 1 is transported along the transport rail 13, and the spacer tape 9 a is wound around the spacer tape take-up reel 21.

  The carrier tape 1 transported along the transport rail 13 is taken up by the carrier tape take-up reel 23 together with the spacer tape 9b fed out from the spacer tape supply reel 22. The electronic component 16 is mounted on the carrier tape 1 in the mounting portion 5 in the middle of conveyance.

  The carrier tape 1 is wound around the carrier tape take-up reel 23 in accordance with the amount of slack detected by the second lower sensor 24a and the second upper sensor 24b on the unloader unit 4 side. That is, when the slack of the carrier tape 1 is detected by the second lower sensor 24a, the control device 31 operates the third drive motor 28 according to the detection signal, and winds the carrier tape 1 around the carrier tape take-up reel 23. take.

  At this time, the control device 31 does not energize the fourth drive motor 29 that is a torque motor, and makes the spacer tape supply reel 22 freely rotatable. When the spacer tape supply reel 22 is in a freely rotatable state, the spacer tape 9b taken up together with the carrier tape 1 on the carrier tape take-up reel 23 is freely fed out from the spacer tape supply reel 22 without resistance.

  That is, since the spacer tape 9b is in a state in which no tension is applied, even when the spacer tape 9b is wound around the carrier tape take-up reel 23 together with the carrier tape 1, the carrier tape 1 is pressed against the core 23a of the carrier tape take-up reel 23. There is no holding.

  Therefore, even if the carrier tape 1 taken up by the carrier tape take-up reel 23 is swung in the width direction, the shake of the carrier tape 1 returns to the original state, so that the deviation amount of the carrier tape 1 gradually increases. Can be prevented.

  When the carrier tape 1 is wound and the amount of sag is reduced, and this is detected by the second upper sensor 24b, the control device 31 stops the operation of the third drive motor 28, and the carrier tape 1 Stop winding.

  As shown in FIG. 4, the carrier tape 1 is wound up by the carrier tape take-up reel 23 in which a slack portion between the guide rail 13 and the carrier tape take-up reel 23 is driven to rotate in the direction of the arrow, and the spacer tape 9b is wound around the carrier tape take-up reel 23 without generating a large tension. Therefore, the carrier tape 1 and the spacer tape 9b are wound in a slack state on the core 23a of the carrier tape take-up reel 23 as shown in FIG.

  When the carrier tape 1 is wound up to the state shown in FIG. 5, the control device 31 stops the operation of the third drive motor 28. Next, the fourth drive motor 29 composed of a torque motor is actuated to rotate the spacer tape supply reel 22 by generating a torque in the direction of winding the spacer tape 9b indicated by an arrow in FIG.

  As a result, the slack between the carrier tape 1 and the spacer tape 9b generated on the carrier tape take-up reel 23 is removed. At this time, since the runout in the width direction of the carrier tape 1 has been removed, the carrier tape 1 and the spacer tape 9b are surely taken up in a state where there is no slack without causing a positional shift on the carrier tape take-up reel 23. Can do.

  The fourth drive motor 29, which is a torque motor, is set to a predetermined winding torque by the torque setting unit 29b. Therefore, when the slack between the carrier tape 1 and the spacer tape 9b generated on the carrier tape take-up reel 23 is removed and the take-up torque starts to increase, the rotational torque of the spacer tape supply reel 22 and the tension of the spacer tape 9b are increased. The equilibrium is reached, and the rotation of the spacer tape supply reel 22 is stopped.

  As a result, when the carrier tape 1 and the spacer tape 9b are tightly wound around the carrier tape take-up reel 23, the tapes 1 and 9b are not damaged by applying excessive tension.

  As described above, when the carrier tape 1 is wound around the carrier tape take-up reel 23 together with the spacer tape 9b, the tension applied to the spacer tape 9b is reduced. For this reason, even if the carrier tape 1 is swung in the width direction, the carrier tape 1 is shaken and taken up by the carrier tape take-up reel 23, so that the carrier tape 1 can be prevented from being displaced.

  In addition, the carrier tape 1 and the spacer tape 9b wound around the carrier tape take-up reel 23 with little tension are slackened, but the spacer tape supply reel 22 in the direction of winding the spacer tape 9b after winding. Was rotated at a predetermined torque.

  Therefore, the slack between the carrier tape 1 and the spacer tape 9b taken up by the carrier tape take-up reel 23 can be removed. That is, the carrier tape 1 and the spacer tape 9b can be surely taken up without causing the carrier tape take-up reel 23 to be displaced or slack.

  On the other hand, when inspecting the mounting state of the electronic component 16 on the carrier tape 1, if the electronic component 16 is mounted on the carrier tape 1, the portion is sent to the unloader unit 4 side and punched out by the mold 33.

  If the portion of the carrier tape 1 on which the electronic component 16 is mounted is punched out, the portion of the carrier tape 1 sent to the unloader portion 4 side must be returned to the loader portion 3 side. In this case, the carrier tape supply reel 7 and the spacer tape take-up reel 21 are rotated in the direction opposite to that when the carrier tape 1 is fed. That is, in that case, the loader unit 3 becomes an unloader unit, and the unloader unit 4 becomes a loader unit.

  As a result, the carrier tape 1 is taken up by the carrier tape supply reel 7, so that the spacer tape take-up reel 21 is allowed to rotate freely in order to prevent positional deviation at the time of take-up.

  Then, after winding, the second drive motor 27 composed of a torque motor is operated to rotate the spacer tape take-up reel 21 by applying a predetermined torque in the direction in which the spacer tape 9a is taken up. The slack between the carrier tape 1 and the spacer tape 9a wound around the take-up reel 7 can be removed. At this time, the carrier tape 1 and the spacer tape 9 a can be wound with the torque set in the torque setting portion 29 b of the second drive motor 27.

  Even when the carrier tape 1 is fed in the reverse direction at the start of operation or the like, the carrier tape 1 and the spacer tape 9a may be wound around the spacer tape take-up reel 7 in the same manner.

  In the above-described embodiment, the case where the carrier tape and the spacer tape are wound up in the mounting apparatus has been described. However, the carrier tape and the spacer tape that are wound around the carrier tape supply reel can be used even in a device other than the mounting apparatus. The present invention can also be applied to a case where the carrier tape is fed out and subjected to predetermined processing and then wound on a carrier tape take-up reel together with another spacer tape.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows schematic structure of the mounting apparatus which shows one embodiment of this invention. The top view which expands and shows a part of carrier tape. The figure for demonstrating the mounting in a mounting part. Explanatory drawing which shows the state which the amount of sag of a carrier tape becomes large in an unloader part, and is wound up. Explanatory drawing which shows a state when the amount of sag of a carrier tape becomes small in an unloader part, and winding-up is complete | finished. Explanatory drawing of a torque motor. The block diagram of the control circuit which controls the sensor which detects the slack of a carrier tape, and the drive motor which rotationally drives each reel. Explanatory drawing which shows the state by which the carrier tape and the spacer tape slackened and wound up by the carrier tape take-up reel.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Carrier tape, 3 ... Loader part, 4 ... Unloader part, 5 ... Mounting part, 7 ... Carrier tape supply reel, 9a, 9b ... Spacer tape, 16 ... Electronic component, 21 ... Spacer tape take-up reel, 22 ... Spacer Tape supply reel, 23... Carrier tape take-up reel, 26 to 29... First to fourth drive motors.

Claims (4)

A carrier tape supply reel in which a carrier tape and a spacer tape are wound on top of each other;
A spacer tape take-up reel that winds up the spacer tape fed out together with the carrier tape from the carrier tape supply reel;
A carrier tape take-up reel that winds up the carrier tape fed out from the carrier tape supply reel;
A spacer tape supply reel that supplies a spacer tape that is wound over the carrier tape when the carrier tape is taken up by the carrier tape take-up reel;
When the amount of sag of the carrier tape becomes equal to or greater than a predetermined value, the carrier tape take-up reel is rotationally driven to wind the spacer tape together with the carrier tape so that the spacer tape supply reel can rotate freely, and the carrier tape Control means for rotationally driving the spacer tape supply reel with a predetermined torque in a direction in which the spacer tape is taken up when winding by the carrier tape take-up reel is stopped when the amount of sag is less than a predetermined value. A tape-shaped part take-up device.   2. The tape-shaped component take-up device according to claim 1, wherein the spacer tape supply reel is rotationally driven by a torque motor capable of setting a rotational torque of the spacer tape supply reel. A mounting device for mounting electronic components on a carrier tape,
A carrier tape supply reel in which the carrier tape and the spacer tape are overlapped and wound;
A spacer tape take-up reel that winds up the spacer tape fed out together with the carrier tape from the carrier tape supply reel;
A mounting portion for mounting the electronic component on the carrier tape fed out from the carrier tape supply reel;
A carrier tape take-up reel that winds up the carrier tape on which electronic components are mounted in this mounting section;
A spacer tape supply reel for supplying a spacer tape wound on the carrier tape when the carrier tape on which the electronic component is mounted is wound by the carrier tape take-up reel;
When the amount of sag of the carrier tape becomes equal to or greater than a predetermined value, the carrier tape take-up reel is rotationally driven to wind the spacer tape together with the carrier tape so that the spacer tape supply reel can rotate freely, and the carrier tape Control means for rotationally driving the spacer tape supply reel with a predetermined torque in a direction in which the spacer tape is taken up when winding by the carrier tape take-up reel is stopped when the amount of sag is less than a predetermined value. An electronic component mounting apparatus characterized by the above. A process of feeding out the carrier tape wound around the carrier tape supply reel;
A step of superimposing the spacer tape fed from the spacer tape supply reel on the carrier tape fed from the carrier tape supply reel and winding the carrier tape on the carrier tape take-up reel;
A step of rotating the carrier tape take-up reel when the amount of sag of the carrier tape is greater than or equal to a predetermined value, and rotating the spacer tape supply reel when winding the spacer tape together with the carrier tape; and
Rotating the spacer tape supply reel with a predetermined torque in a direction to wind up the spacer tape when the amount of sag of the carrier tape becomes less than a predetermined value and the winding by the carrier tape take-up reel is stopped. A method for winding a tape-shaped part, comprising:

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