JP3903382B2 - Spacer winding device in processing device for film carrier tape for electronic component mounting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film carrier tape for mounting electronic components (TAB (Tape Automated Bonding) tape, T-BGA (Tape Ball Grid Array) tape, CSP (Chip Size Package) tape, ASIC (Application Specific Integrated Circuit) tape, FPC ( Flexible processing (COF (Chip On Film) tape, etc.) (hereinafter, simply referred to as “film carrier tape for mounting electronic components”), for example, surface coating, exposure, development, etching, etc. The present invention relates to a winding device and a winding method for winding a spacer that is fed together with a film carrier tape for mounting electronic components when performing processes such as peeling, screen printing, plating, electrical inspection, and appearance inspection.
[0002]
[Prior art]
With the development of the electronics industry, the demand for printed wiring boards for mounting electronic components such as ICs (integrated circuits) and LSIs (large-scale integrated circuits) is increasing rapidly. High functionality is demanded, and as a method for mounting these electronic components, recently, a mounting method using a film carrier tape for mounting electronic components such as TAB tape, T-BGA tape, and ASIC tape has been adopted. In particular, the importance is increasing in the electronic industry using a liquid crystal display element (LCD) such as a personal computer, for which high definition, thinning, and narrowing of the frame area of a liquid crystal screen are desired.
[0003]
Such a film carrier tape for mounting electronic components is shown in FIG. 3 when performing various processes such as surface coating, exposure, development, etching peeling, screen printing, plating, electrical inspection, and appearance inspection. As described above, the electronic component mounting film carrier tape 100 wound around the reel 104 via the spacer 102 is unwound to the processing apparatus main body 101 via the unwinding device 106. Although not shown, the spacer 102 has an electronic component mounting portion accommodating portion formed by embossing corresponding to the electronic component mounting portion.
[0004]
The spacer 102 unwound from the unwinding device 106 together with the electronic component mounting film carrier tape 100 is wound on the reel 110 by the spacer winder 108.
In order to unwind the film carrier tape 100 and the spacer 102 from the unwinding device 106, the unwinding drive roller 112 unwinds. The reel 104 side of the unwinding device 106 is controlled by the clutch 114 so as not to be loosened by the film carrier tape 100 by brake control.
[0005]
[Problems to be solved by the invention]
However, in the spacer winding device 108, a certain amount of tension is necessary to cleanly wind the spacer 102 around the reel 110. However, the drive shaft of the reel 104 of the unwinding device 106 is driven by the clutch 114 as described above. Because of brake control, tension cannot be applied to the spacer 102 side.
[0006]
For this reason, conventionally, as shown in FIG. 3, in the spacer winding device 108, when the amount of slackness of the spacer 102 becomes a constant amount by detecting the amount of slackness of the spacer 102 with the photo sensor 116, The spacer 102 is wound around the reel 110 of the spacer winding device 108 by performing an intermittent operation of driving the drive motor 118 of the reel 110 of the spacer winding device 108.
[0007]
However, when the spacer 102 is wound around the reel 110 of the spacer winding device 108 by such intermittent operation, the spacer 102 cannot be wound with a constant tension. When winding on the reel 110, the spacer 102 is wound on the reel 110 in an elliptical manner as shown in FIG. 4A due to interference between the embosses of the spacer 102 or the weight of the spacer 102. Or is wound in an eccentric state in the width direction of the spacer. In such an eccentric state, the spacer 102 may not be wound on the reel 110.
[0008]
Further, when the spacer 102 is wound around the reel 110 in an elliptically biased state, if the reel is subjected to slight vibration, as shown in FIG. The spacer 102 becomes increasingly biased from the reel 110 due to its own weight.
When the spacer 102 is wound around the reel 110 with the ellipse being biased or being eccentric in the width direction of the spacer, the reel 102 in such a state is used to When wound on another reel through a spacer with an electronic component mounting film carrier tape that has been processed, the tension fluctuation is large, and the electronic component mounting film carrier tape is worn, damaged, bent or damaged. May occur.
[0009]
In consideration of such a current situation, the present invention is directed to a processing device for a film carrier tape for mounting electronic components. It is possible to accurately wind the spacer on the reel so that the winding shape is almost circular without being wound or eccentrically wound in the width direction of the spacer, and against the film carrier tape for mounting electronic components. Deformation such as scratches on the surface of film carrier tape for mounting electronic components, bending of inner leads, damage, bending of film carrier tape for mounting electronic components, and bending without significant tension To provide a spacer winding device and a winding method that does not cause For the purpose.
[0010]
[Means for Solving the Problems]
The present invention has been made in order to achieve the above-mentioned problems and objects in the prior art, and the spacer winding device of the present invention is mounted on an electronic component wound on a reel via a spacer. An unwinding device for unwinding the film carrier tape for a predetermined electronic component mounting film carrier tape processing device;
In the processing device for the film carrier tape for mounting electronic components, the spacer wound out from the unwinding device, and the spacer winding device wound around the reel,
Connecting the reel unwinding drive shaft of the unwinding device to a drive motor;
The spacer take-up drive shaft of the spacer take-up device is connected to a motor through a clutch so that the spacer is taken up with a constant tension.
[0011]
Further, the winding method of the spacer includes an unwinding device for unwinding the electronic component mounting film carrier tape wound around the reel through the spacer to a predetermined electronic component mounting film carrier tape processing device,
In the processing device for the film carrier tape for mounting electronic components, the spacer wound out from the unwinding device, and the spacer winding device wound around the reel,
Connecting the reel unwinding drive shaft of the unwinding device to a drive motor;
A winding drive shaft of the spacer winding device is connected to a motor via a clutch, and the spacer is wound with a constant tension.
[0012]
Thus, since the reel driving shaft of the reel of the winding device is connected to the drive motor, the winding tension of the spacer can be set large.
At this time, the spacer can be wound with a constant tension by setting the winding amount of the spacer winding device to be larger than the winding amount of the winding device.
[0013]
Moreover, the take-up drive shaft of the spacer take-up device is connected to a motor via a clutch, and the clutch is always slipped so that the take-up drive shaft motor always rotates at a speed higher than a predetermined speed. Thus, the tension applied to the spacer is set so as to be within a predetermined tension.
Therefore, when the spacer is wound around the reel of the spacer winding device, the spacer is wound in an elliptical shape or is not wound in a state of being eccentric in the width direction of the spacer, so that the winding shape of the spacer is almost circular. It is possible to wind the reel accurately.
[0014]
Furthermore, since a large tension is not applied to the electronic component mounting film carrier tape wound around the reel, which is wound together with the spacer by the unwinding device, the surface of the electronic component mounting film carrier tape is scratched. There is no deformation such as occurrence, bending of the inner leads, damage, bending of the electronic component mounting film carrier tape, and creases.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments (examples) of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a processing device for a film carrier tape for mounting electronic components equipped with a spacer winding device of the present invention, and FIG. 2 shows a state of a reel wound by the spacer winding device of the present invention. FIG.
[0016]
As shown in FIG. 1, reference numeral 10 denotes a processing apparatus for a film carrier tape for mounting electronic components according to the present invention as a whole.
As shown in FIG. 1, the film carrier tape processing apparatus 10 for electronic component mounting (hereinafter simply referred to as “processing apparatus 10”) includes a feeding device 12, a processing unit 14, and a winding device 16. ing.
[0017]
The processing unit 14 performs predetermined processing, such as surface coating, exposure, development, etching peeling, screen printing, plating, electrical inspection, and appearance inspection, on the film carrier tape T for mounting electronic components. It is like that.
The feeding device 12 includes a winding device 18 and a spacer winding device 20.
[0018]
In the unwinding device 18, for example, a film carrier tape (hereinafter simply referred to as “TAB tape”) T of a type such as CSP or BGA is wound around a reel 24 via a spacer 28. The unwinding drive shaft 26 is mounted.
The unwinding drive shaft 26 is connected to the drive motor 21, and the unwinding drive shaft 26 is rotated by driving the drive motor 21, so that the TAB tape T is unwound from the reel 24 together with the spacer 28. These are supplied to the processing unit 14 via a guide roller 30, a dancer roller 32, a guide roller 34, and the like.
[0019]
Then, after predetermined processing is performed on the TAB tape T by the processing unit 14, the TAB tape T passes through the driving roller 36, the dancer roller 38, and the guide roller 40 and is supplied to the next winding device 16. It is like that.
As shown in FIG. 1, the TAB tape T supplied to the winding device 16 is wound on a reel 44 mounted on the winding drive shaft 42 by driving a drive motor 41 connected to the winding drive shaft 42. As the take-up drive shaft 42 rotates, the TAB tape T is taken up.
[0020]
At this time, the spacer 50 fed out from the reel 48 of the spacer feeding device 46 is interposed in the TAB tape T supplied to the reel 44 of the winding device 16, and the TAB tapes come into contact with each other to damage the TAB tape T. It is supposed to be protected so as not to.
In this case, a drive motor 47 is connected to the delivery drive shaft 43 of the reel 48 of the spacer delivery device 46 via a powder clutch 45, and the spacer 50 is opposite to the delivery direction as indicated by an arrow. It is comprised so that fixed tension may be given to the direction.
[0021]
In this case, the drive motor 41 of the take-up drive shaft 42 of the take-up device 16 is controlled by the control device based on the detection result of the potentiometer 31 attached to the fulcrum of the dancer roller 38 arm. The speed is controlled so that the position of is maintained at the neutral position.
On the other hand, the spacer 28 unwound together with the TAB tape T from the reel 24 of the unwinding device 18 is applied to the reel 56 mounted on the winding drive shaft 54 of the spacer winding device 20 as shown in FIG. By driving the drive motor 23 connected via the clutch 29, the take-up drive shaft 54 rotates, so that the spacer 28 is taken up.
[0022]
In the drawing, PH indicates a photo sensor for detecting the rotation speed of the reel 56 of the spacer winding device 20 and a photo sensor for detecting the rotation speed of the reel 48 of the spacer feeding device 46.
The spacer winding device in the processing apparatus 10 of the present invention configured as described above is configured to operate as follows.
[0023]
The unwinding device 18 operates the drive motor 21 of the unwinding drive shaft 26 based on control of a control device (not shown), whereby the unwinding drive shaft 26 rotates at a constant speed and torque, and the TAB tape T However, it is unwound together with the spacer 28 from the reel 24 at a constant speed and with a constant tension, and is supplied to the processing unit 14.
[0024]
In this case, the drive motor 21 of the unwinding drive shaft 26 causes the position of the dancer roller 32 to be neutral by the control device based on the detection result of the potentiometer 25 attached to the fulcrum of the arm of the dancer roller 32. The speed is controlled so as to be maintained. Further, the speed of the TAB tape T in the processing unit 14 is finally controlled by the drive motor 43 of the drive roller 36 under the control of the control device.
[0025]
Further, by applying torque to the fulcrum of the arm of the dancer roller 32 by a powder clutch and a drive motor (not shown) of the dancer roller 32, the above-described tension is applied to the TAB tape T by the control of the control device. It has become.
Then, the spacer 28 unwound from the unwinding device 18 is conveyed to the spacer winding device 20.
[0026]
In this spacer take-up device 20, the take-up drive shaft is operated by operating the drive motor 23 and the powder clutch 29 of the take-up drive shaft 54 of the reel 56 of the spacer take-up device 20 based on the control of the control device. 54 is rotated at a constant speed and torque so that the spacer 28 is wound around the reel 56 at a constant speed of, for example, 0.5 to 10 m / min, preferably with a tension of 50 to 5000 gf. Is done.
[0027]
The tension applied to the spacer 28 by the powder clutch 29 is desirably set to be in the range of 50 to 5000 gf.
With this configuration, since the unwinding drive shaft 26 of the reel 24 of the unwinding device 18 is connected to the drive motor 21, the winding tension of the spacer 28 can be set large.
[0028]
At this time, the spacer 28 is interposed between the take-up drive shaft 54 and the drive motor 23 by setting the take-up amount of the spacer take-up device 20 larger than the unwind amount of the unwind device 18. By the action of the powder clutch 29, it can be wound with a constant tension.
That is, the winding drive shaft 54 of the spacer winding device 20 is connected to the drive motor 23 via the powder clutch 29, and the motor 23 of the winding drive shaft 54 always rotates at a speed higher than a predetermined speed. In addition, the clutch 29 is always slid, so that the tension applied to the spacer 28 is within a predetermined tension.
When the tension applied to the spacer 28 exceeds the predetermined tension, the powder clutch 29 is slid to become the tension applied to the spacer 28 so as to be within the predetermined tension.
[0029]
As described above, when the tension of the spacer 28 in the spacer winding device 20 is within such a range, when the spacer 28 is wound around the reel 56 of the spacer winding device 20, the spacer 28 is biased in an elliptical shape. As shown in FIG. 2, the spacer 28 can be accurately wound around the reel so that the winding shape is substantially circular, without being wound or wound in an eccentric state in the width direction of the spacer 28.
[0030]
In addition, if the tension is within this range, a large tension is not applied to the TAB tape T wound around the reel 24 that is wound together with the spacer 28 by the unwinding device 18, so that the film carrier for mounting electronic components is used. There are no deformations such as scratches on the surface of the tape, bending of the inner leads, damage, and bending of the film carrier tape for mounting electronic components.
[0031]
The above-mentioned powder clutch is a type of clutch that can control torque with a minute current so that the torque can be easily controlled and installed in a small place. Clutch, powder clutch, etc. can be used.
The powder clutch is an electromagnetic powder type that can generate torque that is almost proportional to the excitation current, can be used for continuous slipping within the allowable slip rate, has almost no change in torque due to rotational speed, and has excellent repeatability. It is a static integrated structure, easy to install, requires no maintenance, uses powder and has a long life. As such a powder clutch, for example, “Micro powder clutch / brake OP series” (manufactured by Kokura Clutch Co., Ltd.) can be used.
[0032]
In addition, the hysteresis clutch generates torque proportional to the excitation current, enables accurate torque control, can use continuous slip within the allowable slip rate, and there is no mechanical contact part with electromagnetic torque transmission. It can generate semi-permanently stable torque, is a stationary coil type, is built into the shaft, is easy to install on the machine, and does not require maintenance. For example, “Hysteresis Clutch / Brake H Series” (Ogura Clutch Co., Ltd.) can be used.
[0033]
The preferred embodiment of the present invention has been described above, but the present invention is not limited to this. For example, not only a normal film carrier tape for mounting electronic components having a width ranging from 35 mm to 165 mm, but also the same wide width. Various changes can be made without departing from the object of the present invention, such as a film carrier tape for mounting multiple electronic components in which a film carrier tape is formed in a plurality of strips (multiple rows). Is possible.
[0034]
【The invention's effect】
According to the present invention, the reel unwinding drive shaft of the unwinding device is connected to the drive motor, so that the spacer winding tension can be set large.
At this time, the spacer can be wound with a constant tension by setting the winding amount of the spacer winding device to be larger than the winding amount of the winding device.
[0035]
Moreover, the take-up drive shaft of the spacer take-up device is connected to a motor via a clutch, and the clutch is always slipped so that the take-up drive shaft motor always rotates at a speed higher than a predetermined speed. Thus, the tension applied to the spacer is set so as to be within a predetermined tension.
Therefore, when the spacer is wound around the reel of the spacer winding device, the spacer is wound in an elliptical shape or is not wound in a state of being eccentric in the width direction of the spacer, so that the winding shape of the spacer is almost circular. It is possible to wind the reel accurately.
[0036]
Furthermore, since a large tension is not applied to the film carrier tape for mounting electronic components wound around the reel, which is wound together with the spacer by the unwinding device, the surface of the film carrier tape for mounting electronic components is scratched. It is an extremely excellent invention that has many effects such as occurrence of deformation, bending of the inner leads, damage, and deformation such as bending of the film carrier tape for mounting electronic components.
[Brief description of the drawings]
FIG. 1 is a schematic view of a processing device for a film carrier tape for mounting electronic components equipped with a spacer winding device of the present invention.
FIG. 2 is a schematic view showing a state of a reel taken up by a spacer take-up device of the present invention.
FIG. 3 is a schematic view of a conventional spacer winding device.
FIG. 4 is a schematic view showing a state of a reel taken up by a conventional spacer take-up device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Processing apparatus 12 Sending apparatus 14 Processing part 16 Winding apparatus 18 Unwinding apparatus 20 Spacer winding apparatus 21 Drive motor 23 Drive motor 24 Reel 25 Potentiometer 26 Drive shaft 28 Spacer 29 Powder clutch 30 Guide roller 32 Dancer roller 34 Guide roller 36 drive roller 38 dancer roller 40 guide roller 41 drive motor 42 drive shaft 43 drive shaft 44 reel 45 powder clutch 46 spacer delivery device 47 drive motor 48 reel 50 spacer 54 drive shaft 56 reel

Claims (2)

An unwinding device for unwinding a film carrier tape for mounting electronic components wound on a reel via a spacer to a processing device for a film carrier tape for mounting electronic components;
In the processing device for the film carrier tape for mounting electronic components, the spacer wound out from the unwinding device, and the spacer winding device wound around the reel,
Connecting the reel unwinding drive shaft of the unwinding device to a drive motor;
A film carrier tape for mounting electronic parts, wherein the spacer is wound with a constant tension by connecting a winding drive shaft of the spacer winding device to a motor via a clutch. A spacer winding device in the apparatus. An unwinding device for unwinding a film carrier tape for mounting electronic components wound on a reel via a spacer to a processing device for a film carrier tape for mounting electronic components;
In the processing device for the film carrier tape for mounting electronic components, the spacer wound out from the unwinding device, and the spacer winding device wound around the reel,
Connecting the reel unwinding drive shaft of the unwinding device to a drive motor;
A spacer winding method in a film carrier tape processing apparatus for mounting an electronic component, wherein the winding drive shaft of the spacer winding device is connected to a motor via a clutch, and the spacer is wound with a constant tension. .

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