JP2009073645A - Adhesive tape sticking device and method of detecting residual amount of tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive tape sticking device capable of surely detecting the residual amount of an adhesive tape or an end of the adhesive tape without providing an end mark in the end of the adhesive tape which is wound around a reel. <P>SOLUTION: This adhesive tape sticking device comprises a tape supply section for supplying an adhesive tape 5 by driving to rotate a reel 13, around which the adhesive tape is wound, a rotation amount control means 28 for rotating the reel so as to supply a predetermined length of the adhesive tape, a press-bonding means for sticking the adhesive tape supplied from the tape supply section to a member, to which the adhesive tape is to be stuck, by press-bonding it, a peeling means for peeling a stuck adhesive material layer and a support tape, and a tape collecting section for collecting the support tape. Further, this adhesive tape sticking device comprises a means 29 for detecting a rotating angle of the reel 13 when supplying the adhesive tape, a means 30 for detecting a diameter of the wound tape around the reel 13 based on the detected rotating angle, and a means 31 for determining an end of the adhesive tape based on the detected diameter of the wound tape. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an adhesive tape applying apparatus for attaching an adhesive tape having an adhesive material layer to a support tape, such as an ACF (anisotropic conductive material film) tape, and a tape for detecting the remaining amount or the end of the adhesive tape. The present invention relates to a remaining amount detection method.

  As a method of mounting components on a substrate such as a liquid crystal panel or a display panel represented by PDP (Plasma Display Panel), an adhesive tape such as an ACF tape is attached to the substrate, and then the support tape is peeled off to remove the ACF from the substrate. By adhering parts such as TCP (Tape Carrier Package), IC, thin LSI package parts, etc. on the adhesive material layer, and then applying pressure and heat to the adhesive material layer A method of mounting a component on a substrate is known. In such a component mounting method, an adhesive tape attaching device is used to attach an adhesive tape to a substrate as described above.

  As the configuration of the adhesive tape affixing device, when supplying the adhesive tape wound on the reel, after cutting only the adhesive material layer into a predetermined length, it is supplied on the substrate placed on the cradle, The pressure-sensitive adhesive tape is pressed onto the substrate and the pressure-sensitive adhesive layer cut to a predetermined length is attached to the substrate, and then the support tape is peeled off from the pressure-sensitive adhesive layer to collect the support tape, and the next pressure-sensitive adhesive A device that repeats the operation of supplying a tape is known (see, for example, Patent Document 1 and Patent Document 2).

  In such an adhesive tape sticking device, when there is no adhesive tape wound around the reel in use (referred to as “tape break”), it is necessary to replace it with a new reel. Conventionally, the tension roller provided in the tape supply unit so as to apply a predetermined tension to the adhesive tape to be supplied moves to the end of the movable range when the tape runs out. What is reported is known.

  However, it is preferable to replace the reel after the adhesive tape wound around the reel in use is completely removed, because it requires troublesome and time-consuming work of arranging the adhesive tape from scratch along a predetermined path. Connects the end of the adhesive tape in use with the beginning of the adhesive tape of the newly replaced reel, and more preferably, the connection is automatically performed so that the adhesive tape can be continuously supplied. Is required. Therefore, it is necessary to detect the end of the adhesive tape wound on the reel in use.

  Therefore, an end mark is provided at the end of the adhesive tape wound on the reel so that the end of the adhesive tape in use can be detected, and when the end mark is detected by a sensor, the end of the adhesive tape in use is detected. It is known to connect the beginning of a new reel of adhesive tape (see, for example, Patent Document 3). In this patent document 3, the end part of the adhesive tape in use is turned over and overlapped with the starting end part of the adhesive tape of a new reel, and is connected by thermocompression bonding. It describes how to connect.

In addition, a connection tape that can be easily welded and easily detected by a sensor is connected to both ends of the adhesive tape using adhesive tape, and the connection tape at the end of the adhesive tape in use is connected. When detected by a sensor, a method is known in which the connection tape at the end of the adhesive tape in use and the connection tape at the start of the adhesive tape of a new reel are thermally welded to connect both tapes (for example, Patent Documents). 4).
JP 2001-326450 A JP 2003-198197 A JP 2004-196540 A JP 2005-336447 A

  However, there are adhesive tapes that are not provided with an end mark in the adhesive tape application device, and when such an adhesive reel is used, the end and start ends are connected and used continuously. There is a problem that productivity cannot be reduced significantly. In recent years, ICs with a narrow width are often joined. In such a case, the width of the adhesive tape used is as narrow as about 1 mm. Even if it is provided, the conventional detection sensor may not be able to reliably detect the same problem as described above.

  In view of the above-described conventional problems, the present invention has made it possible to reliably detect the remaining amount or end portion of an adhesive tape even if no end mark or the like is provided at the end portion of the adhesive tape wound around the reel. It is an object of the present invention to provide an adhesive tape applying device and a tape remaining amount detection method.

  The pressure-sensitive adhesive tape applying device of the present invention includes a tape supply unit that supplies a pressure-sensitive adhesive tape by rotating a reel wound with a pressure-sensitive adhesive tape provided with a pressure-sensitive adhesive layer on a support tape; Rotation amount control means for rotating the reel, pressure bonding means for pressing the adhesive tape supplied from the tape supply unit against the substrate and attaching the adhesive material layer, and peeling the attached adhesive material layer and the support tape In a pressure-sensitive adhesive tape applicator provided with a peeling means for recovering and a tape recovery part for recovering a support tape, means for detecting the rotation angle or rotation time of the reel supplying the adhesive tape, and the reel from the detected rotation angle or rotation time Means for detecting the tape winding diameter and means for determining the end of the adhesive tape from the detected tape winding diameter.

  According to this configuration, in the adhesive tape applicator for supplying the adhesive tape wound around the reel at a predetermined length and crimping the adhesive material layer onto the substrate, the tape winding is performed for a predetermined adhesive tape supply length. Since the rotation angle or the rotation time of the reel changes according to the diameter, the tape winding diameter can be obtained by detecting the rotation angle or the rotation time of the reel at the time of supplying the tape, and the tape winding diameter is predetermined. If it is less than the value, it can be determined that the end of the tape has been reached, so even if no end mark or the like is provided at the end of the adhesive tape wound around the reel, the remaining amount or end of the adhesive tape is reliably detected. be able to.

  The tape supply unit includes a motor that rotationally drives the reel, and a tension roller that is urged to move in one direction and moves against the urging force by supplying the adhesive tape to the affixing unit. The means includes origin detecting means for detecting that the tension roller is located at a predetermined origin position, and motor control means for rotating the motor until the tension roller is detected by the origin detecting means after the adhesive tape is supplied to the sticking portion. When the means for detecting the rotation angle or the rotation time of the reel is constituted by means for processing an output signal from an encoder for detecting the rotation of the motor, a required tension is applied to the supplied adhesive tape by a tension roller. However, the amount of adhesive tape supplied can be accurately controlled by detecting the position of the tension roller, and the rotation of the motor during the supply can be controlled. By detecting at over Da is suitable can be detected with good precision rotation angle or rotation time. The rotation time of the motor is determined after the adhesive tape is supplied to the affixing part after the tension roller is moved away from the origin of the origin detecting means in order to start the supply of the adhesive tape to the affixing part. It is also possible to detect the time for rotating the motor until the position of the tension roller is detected by the origin detection means, and use it as the reel rotation time required to feed a predetermined tape supply amount.

  In the tape remaining amount detection method of the present invention, an adhesive tape is supplied from a reel wound with an adhesive tape provided with an adhesive layer on a support tape, and the supplied adhesive tape is pressed against a substrate to form an adhesive layer. A method for detecting a remaining tape amount in a pressure-sensitive adhesive tape sticking device that peels off a sticky adhesive material layer and a support tape and recovers the support tape, and detecting a tape winding diameter of a reel It has the process of detecting the tape remaining amount from the tape winding diameter.

  According to this configuration, the tape winding diameter of the reel at the time of supplying the tape is obtained, and the remaining tape amount is detected from the tape winding diameter, thereby reliably detecting the remaining amount of the adhesive tape wound around the reel. can do.

  Further, when the tape remaining amount detecting step is a tape end detecting step for detecting the end where the remaining amount of the tape is equal to or less than a predetermined length, an end mark or the like is provided at the end of the adhesive tape wound around the reel. Even if not, the end of the adhesive tape can be reliably detected.

  Further, when the tape winding diameter detecting step includes a step of detecting the rotation angle of the reel at the time of supplying the adhesive tape and a step of calculating the tape winding diameter from the detected rotation angle, the tape winding diameter is rotated. It can be easily detected by detecting the angle.

  The tape winding diameter detecting step includes a step of detecting a rotation time for rotating the reel when supplying the adhesive tape, and a step of calculating a tape winding diameter from the detected rotation time. It can be easily detected by detecting the rotation time.

  The tape remaining amount detection method of the present invention is a tape remaining amount detection method in an apparatus for supplying a tape wound around a reel by rotating the reel, and detecting the rotation angle of the reel at the time of supplying the tape. And a step of calculating the tape winding diameter from the detected rotation angle, and a step of detecting the remaining amount of tape from the detected tape winding diameter. The same effect can be obtained by applying the tape when supplying a tape having an arbitrary physical property from the reel.

  According to the adhesive tape applying apparatus and the tape remaining amount detecting method of the present invention, the tape winding diameter is less than a predetermined value by detecting the rotation angle or the rotation time of the reel at the time of supplying the tape and obtaining the tape winding diameter. Since it can be determined that the end of the tape has been reached, it is possible to reliably detect the remaining amount or end of the adhesive tape even if the end mark of the adhesive tape wound on the reel is not provided. it can.

  FIG. 1 to FIG. 1 show an embodiment in which the present invention is applied to an adhesive tape attaching apparatus for attaching an adhesive tape having an adhesive material layer such as an anisotropic conductive material to a substrate such as a glass substrate of a liquid crystal display panel. This will be described with reference to FIG.

  In FIG. 1, the adhesive tape sticking apparatus 1 of this embodiment should stick the positioning means 3 which supports and moves and positions the board | substrate 2, the lower receiving stand 4 which supports the side edge part of the board | substrate 2 from the downward direction. The pressure-sensitive adhesive mechanism 5 that presses the adhesive tape 5 from above and attaches it to the substrate 2, the tape supply unit 7 that supplies the adhesive tape 5, and the support tape from the adhesive material layer of the adhesive tape 5 that is attached to the substrate 2. It consists of a peeling mechanism portion 8 for peeling and a tape collecting portion 9 for collecting the support tape of the peeled adhesive tape 5. Reference numeral 10 denotes a transfer means for transferring the substrate 2 carried into the carry-in position of the adhesive tape attaching device 1 to the positioning means 3.

  As shown in FIG. 2, the pressure-bonding mechanism portion 6 has a pressure-bonding surface 11 a facing the lower receiving portion 4 disposed below, and a pressure-bonding head 11 that performs a sticking operation of the adhesive tape 5. A head lifting device 12 such as a cylinder device that lifts and lowers the head 11 is provided. A heating means (not shown) is built in the pressure-bonding head 11 so that the pressure-bonding surface 11a of the pressure-bonding head 11 can be heated to a predetermined temperature.

  The tape supply unit 7 includes a reel 13 around which the adhesive tape 5 is wound, a plurality of guide rollers 14 a, 14 b, and 14 c that guide the adhesive tape 5 supplied from the reel 13, and a pair arranged in parallel at intervals. Between the guide rollers 14a and 14b, a tension roller 15 which is urged to move in a direction away from and away from these rollers, and an adhesive material layer provided in series on one side of the support tape of the adhesive tape 5 On the other hand, the cutter 16 that cuts in each length corresponding to the size of the adhesive material application area in the substrate 2, the end of the adhesive tape 5 and the start of the adhesive tape 5 drawn out from the newly mounted reel 13, And tape connecting means 17 for connection by heat welding, ultrasonic bonding, or the like.

  The peeling mechanism unit 8 includes a movable body 18 that can reciprocate in the longitudinal direction between the base 4 and the crimping surface 11a of the crimping head 11, and an adhesive that is crimped to the substrate 2 as the movable body 18 moves. A tape pressing roller 19a that moves while rolling along the upper surface of the tape 5, and an oblique upper portion of the pressing roller 19a, and the moving tape 18 is wound around a part of the outer periphery to move the moving body 18. Accordingly, a tape peeling roller 19b that peels the support tape and a chuck 20 that is provided on the movable body 18 and grips and fixes the support tape peeled off when necessary.

  The tape recovery unit 9 includes a guide roller 21 that guides the peeled support tape upward, a chuck 22 that grips and fixes the support tape, and a recovery unit 23 that sucks and recovers the support tape.

  In the adhesive tape applicator 1 having the overall configuration described above, in this embodiment, as shown in FIGS. 3 and 4, the tape supply unit 7 detects the remaining amount or the end of the adhesive tape 5 wound around the reel 13. Is configured to do. That is, an origin sensor 24 for detecting that the tension roller 15 is located at the origin (ORG) position, an upper limit sensor 25a and a lower limit sensor 25b for detecting that the tension roller 15 is located at the upper limit position and the lower limit position, and the adhesive tape 5 are provided. Is provided with a motor 26 for rotationally driving the reel 13 and an encoder 27 for detecting a rotation angle of the motor 26. The encoder 27 includes a rotary plate 27a having a slit and a sensor 27b that detects the slit. 3 and 4, the encoder 27 that is a means for detecting the rotation angle or the rotation time of the reel 13 is configured separately from the motor 26, but a rotary encoder that is a rotation position detection means for the motor is built in. A motor and an encoder, such as a pulse motor and a servo motor, may be configured integrally.

  The motor 26 is configured to rotate and drive until the tension roller 15 is detected by the origin sensor 24 by the motor control means 28 during the supply operation of the adhesive tape 5. Further, during the rotation of the motor 26, the detection signal of the sensor 27b of the encoder 27 is inputted to the rotation angle detection means 29 or the rotation time detection means. The rotation angle signal detected by the rotation angle detection means 29 is input to the tape winding diameter calculation means 30 to calculate the tape winding diameter, and the tape end determination means 31 further calculates the tape winding diameter based on the calculation result. It is configured to determine that the end has been reached.

  Next, the process of sticking the adhesive tape 5 to the side edge portion of the substrate 2 with the adhesive tape sticking apparatus 1 having the above configuration will be described. In the state where the side edge portion of the substrate 2 is positioned on the lower support 4 by the positioning means 3 from the state shown in FIG. 1 and FIG. The pressure-sensitive adhesive tape 5 is pressed on the lower pressure-bonding surface 11 a to press the pressure-sensitive adhesive tape 5 to the substrate 2. Next, the movable body 18 is moved to the tape supply unit 7 side with the chuck 22 of the tape collecting unit 9 closed, the support tape of the adhesive tape 5 held and fixed, and the chuck 20 of the peeling mechanism unit 8 opened. Thus, the support tape is peeled from the adhesive material layer of the adhesive tape 5 attached to the substrate 2.

  Next, the chuck 20 of the peeling mechanism unit 8 is closed to hold the adhesive tape 5, and the chuck 22 of the tape collecting unit 9 is opened so that the support tape can be freely sucked and collected by the collecting unit 23. The moving body 18 of the section 8 is moved by a predetermined tape supply amount S as indicated by an arrow in FIG. Thus, the adhesive tape 5 provided with the adhesive material layer is supplied between the pressure-bonding surface 11a of the pressure-bonding head 11 and the region to which the pressure-sensitive adhesive tape 5 of the substrate 2 positioned on the lower support 4 is to be attached. Become. By this operation, in the tape supply section 7, as shown in FIG. 3 and FIG. 5, from the state where the tension roller 15 is detected by the origin sensor 24, as shown in FIG. 6, the origin sensor 24 and the upper limit sensor 25a. Ascend to a position between. At this time, the upward movement amount L is S / 2. The upper limit sensor 25a and the lower limit sensor 25b are provided for safety. Therefore, the distance between the origin sensor 24 and the upper limit sensor 25a is the tape supply when the adhesive tape 5 is applied to the largest substrate 2. The amount S is set to be larger than S / 2.

  Next, as shown in FIG. 7, the motor 26 is driven by the motor control means 28 until the tension roller 15 is detected by the origin sensor 24, the reel 13 is rotated, and the adhesive tape wound around the reel 13. 5 is supplied. The supply amount is the same as the tape supply amount S.

The rotation of the reel 13 at this time is detected by the encoder 27, and the rotation angle θ is detected by the rotation angle detection means 29. The rotation angle θ is input to the tape winding diameter calculation means 30, and in the tape winding diameter calculation means 30, as shown in FIG. 8, the reel 13 is determined from a predetermined tape supply amount S and the detected rotation angle θ. The tape winding diameter r is calculated. That is, since the tape supply amount S is S = 2 · π · r · θ / 360,
The tape winding diameter r is calculated by r = 360 · S / (2π · θ).

  Thus, when the tape winding diameter r on the reel 13 is obtained, the tape end determination means 31 has not yet reached the end if the value is equal to or greater than a predetermined determination value. If it is determined that there is, the reel 13 is replaced and a new reel 13 is set in the tape supply unit 7, and the end of the adhesive tape 5 in use and the beginning of the adhesive tape 5 on the new reel 13 are connected to the tape connecting means 17. It becomes possible to supply the adhesive tape 5 continuously by connecting by. In the present embodiment, a specific mechanism and its configuration are not disclosed, but it is also possible to automatically replace the reel 13 and connect the end and start of the adhesive tape 5 automatically.

In the above description, the example in which the rotation angle θ of the reel 13 at the time of supplying the adhesive tape 5 is detected by the rotation angle detection means 29 has been described. However, instead of the rotation angle detection means 29, FIG. As indicated in parentheses, a rotation time detecting means for detecting the rotation time of the motor 26, that is, the feed time t (sec) may be applied. That is, when the rotational speed N (rpm) of the motor 26 is constant, as shown in FIG. 9, if it takes t time to feed the adhesive tape 5 by a predetermined tape supply amount S, the tape winding diameter r is It is obtained by the following calculation. That is,
The tape feed speed V is V = 2 · π · r · N / 60 and
Since V = S / t,
The tape winding diameter r is calculated by r = (S / t) · 60 / (2 · π · N).

  In the above description of the embodiment, only an example of an ACF tape in which an ACF (anisotropic conductive material film) is provided on one side of a support tape as an adhesive tape is shown. However, the present invention is a component mounting using an ACF tape. The present invention is not limited to this, and the present invention can also be applied to a case where a non-conductive film is attached to a substrate to mount a component. Also, an adhesive tape application device that prevents adhesive material from adhering to the crimping head by crimping with a protective tape between the crimping head and the adhesive tape or between the crimping head and the component. In the crimping apparatus, the present invention can also be applied to detection of the remaining amount of the protective tape.

  According to the adhesive tape applying apparatus and the tape remaining amount detection method of the present invention, the tape winding diameter is determined by detecting the rotation angle or rotation time of the reel at the time of supplying the tape and obtaining the tape winding diameter of the reel. When the value is less than the value, it can be determined that the end of the tape has been reached, and even if the end mark of the adhesive tape wound around the reel is not provided, the remaining amount of the adhesive tape or the end is reliably detected. Therefore, it can be suitably used in a component mounting apparatus that mounts various components by attaching an adhesive tape to a substrate.

The whole perspective view of one embodiment of the adhesive tape sticking device concerning the present invention. The expansion perspective view of the principal part of the embodiment. The front view which shows the structure of the tape supply part of the embodiment. The block diagram which detects the termination | terminus of the adhesive tape in the tape supply part. Operation | movement explanatory drawing in the same tape supply part. Operation | movement explanatory drawing in the same tape supply part. Operation | movement explanatory drawing in the same tape supply part. Explanatory drawing of the tape winding diameter calculation method in the tape supply part. Explanatory drawing of the other tape winding diameter calculation method in the same tape supply part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesive tape sticking apparatus 2 Board | substrate 5 Adhesive tape 6 Crimping mechanism part 7 Tape supply part 8 Peeling mechanism part 9 Tape collection | recovery part 13 Reel 15 Tension roller 24 Origin sensor (origin detection means)
26 Motor 27 Encoder 28 Motor control means 29 Rotation angle detection means 30 Tape winding diameter calculation means 31 Tape end determination means

Claims (7)

  A tape supply section for supplying an adhesive tape by rotationally driving a reel on which an adhesive tape having an adhesive layer provided on a support tape is wound, and a rotation amount for rotating the reel so that the supply length of the adhesive tape becomes a predetermined length. The control means, the pressure-bonding means for pressing the pressure-sensitive adhesive tape supplied from the tape supply unit to the substrate and sticking the pressure-sensitive adhesive layer, the peeling means for peeling the attached pressure-sensitive adhesive layer and the support tape, and collecting the support tape Means for detecting the rotation angle or rotation time of the reel supplying the adhesive tape, and means for detecting the tape winding diameter of the reel from the detected rotation angle or rotation time. And means for determining the end of the adhesive tape from the detected tape winding diameter.   The tape supply unit includes a motor that rotationally drives the reel, and a tension roller that is urged to move in one direction and moves against the urging force by supplying the adhesive tape to the affixing unit. An origin detecting means for detecting that the tension roller is located at a predetermined origin position, and a motor control means for rotating the motor until the tension roller is detected by the origin detecting means after the adhesive tape is supplied to the sticking portion. 2. The adhesive tape applicator according to claim 1, wherein the means for detecting the rotation angle or the rotation time of the reel comprises means for processing an output signal from an encoder for detecting the rotation of the motor.   Supply the adhesive tape from the reel wound with the adhesive tape with the adhesive layer provided on the support tape, press the supplied adhesive tape against the substrate, attach the adhesive layer, and support the attached adhesive layer A method for detecting a remaining tape amount in an adhesive tape applying apparatus that peels off a tape and collects a supporting tape, the step of detecting the tape winding diameter of a reel, and the step of detecting the tape remaining amount from the detected tape winding diameter A method for detecting a remaining tape amount, comprising:   4. The tape remaining amount detecting method according to claim 3, wherein the tape remaining amount detecting step is a tape end detecting step for detecting an end where the remaining amount of tape is equal to or less than a predetermined length.   The tape winding diameter detecting step includes a step of detecting a rotation angle of the reel at the time of supplying the adhesive tape and a step of calculating a tape winding diameter from the detected rotation angle. Tape remaining amount detection method.   5. The tape winding diameter detecting step includes a step of detecting a rotation time for rotating the reel when the adhesive tape is supplied, and a step of calculating a tape winding diameter from the detected rotation time. Tape remaining amount detection method.   A method for detecting a remaining amount of tape in an apparatus for supplying a tape wound around a reel by rotating the reel, the step of detecting a rotation angle of the reel at the time of tape supply, and a tape winding diameter from the detected rotation angle A tape remaining amount detecting method comprising: a step of calculating; and a step of detecting the remaining amount of tape from the detected tape winding diameter.

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