JP2009126625A - Method for sensing trailing edge of tape and device for supplying tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for sensing a trailing edge of a tape capable of sensing the trailing edge with accuracy regardless of a length thereof and the presence or absence of a trailing edge mark mounted on the trailing edge of a tape wound around a reel. <P>SOLUTION: This method for sensing the trailing edge of a tape includes a process for sensing the remaining amount of a tape, a process for detecting one end of the trailing edge mark until a remaining amount of the tape becomes a first predetermined remaining amount, a process for detecting the other end of the trailing edge mark within a first predetermined feeding time or feeding amount thereafter when one end of the trailing edge mark is detected, and a process for respectively notifying that the trailing edge is sensed: immediately or after a second predetermined feeding time or feeding amount when the other end of the trailing edge mark is detected: after a third predetermined feeing time or feeding amount after one end of the trailing edge mark is detected when the other end of the trailing edge mark is not detected; and after the remaining amount of the tape becomes the first predetermined remaining amount when one end of the trailing edge mark is not detected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tape end detection method and a tape supply device for detecting the end of various tapes wound around a reel such as an adhesive tape such as an ACF (anisotropic conductive material film) tape and a protective tape for a crimping tool. is there.

  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. Adhesive material layer such as TCP (Tape Carrier Package), IC, thin LSI package parts, etc. are temporarily pressure-bonded on the pressure-sensitive adhesive layer, and then heat and pressure higher than those of temporary pressure bonding are applied. A method of mounting a component on a substrate by performing this pressure bonding is known. In the component mounting method, an adhesive tape attaching device for attaching an adhesive tape to a substrate is used.

  As the adhesive tape application device, the adhesive tape wound around the reel is pulled out and supplied by the tape supply device, and only the adhesive material layer of the adhesive tape is cut to a predetermined length before the crimping device, and then the adhesive tape is removed. It was sent between the crimping tool and the substrate placed on the cradle, pressed the adhesive tape with the crimping tool, stuck the adhesive material layer cut to a predetermined length on the substrate, and then stuck the support tape A configuration is known in which the support tape is peeled off from the adhesive layer and the operation of supplying the next adhesive tape is repeated (for example, see Patent Document 1).

  In Patent Document 1, as shown in FIG. 11A, the end of the adhesive tape 102 wound around the reel 101 is terminated at a predetermined length so that the end of the adhesive tape 102 in use can be detected. When a mark 103 is provided and one end of the end mark 103 is detected by a detection sensor (not shown) as shown in FIG. 11B, the end of the adhesive tape 102 is notified to the control unit, and a new reel 101 is provided. It is configured to command the exchange. In Patent Document 1, a dummy tape 102a is connected to the end side from the end mark 103, and the length of the dummy tape is set to be longer than the length that can complete the crimping operation to one substrate after the end mark 103 is detected. In the middle of the crimping operation, there is no interruption.

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 with 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). 2). In Patent Document 2, the entire length of the connection tape functions as a terminal mark.
Japanese Patent Laid-Open No. 7-270742 JP 2005-336447 A

  By the way, in recent years, in order to reduce the cost of the pressure-sensitive adhesive tape wound and supplied on a reel, a dummy tape different from the pressure-sensitive adhesive tape is used at the end of the pressure-sensitive adhesive tape as described in Patent Document 1 and Patent Document 2 above. In many cases, the tape is simply wound with an adhesive tape around the reel without using a complicated structure with a connecting tape or connecting tape. In addition, there are a mixture of a short end mark (for example, 60 mm) provided at an appropriate length position from the end of the adhesive tape and a continuous end mark provided from the end of the adhesive tape to an appropriate length position. And has come to circulate.

  However, if the end of the adhesive tape cannot be detected accurately, the reel can be replaced with a sufficient amount of remaining tape before the adhesive tape runs out, or the end of the adhesive tape can be removed so that the crimping process will not be interrupted. It is impossible to realize a highly productive crimping process by automatically connecting the new tape and the start of the adhesive tape of the new reel. Therefore, the end of the pressure-sensitive adhesive tape can be used regardless of whether the end-mark is not provided as described above, or when a reel wound with any pressure-sensitive adhesive tape that is provided but has a significantly different length is used. It has been requested to be able to detect accurately. Otherwise, the pressure-sensitive adhesive tape that can be used is limited, so that it is not versatile and the pressure-sensitive adhesive tape application device is extremely inconvenient.

  However, there is no known configuration for accurately detecting the end when no end mark is provided on the adhesive tape. Even in the case where the end mark provided on the end portion of the adhesive tape is detected by a detection sensor, in recent years, a narrow width IC is often joined. There is also a problem that the tape cannot be reliably detected because the width of the tape is as narrow as about 1 mm. If the provided end mark can be detected accurately, the detection accuracy of the end position is generally high.

  In view of the above-described conventional problems, the present invention provides a tape end detection method and a tape supply device capable of accurately detecting the end regardless of the length of the end mark provided at the end of the tape wound on the reel. The purpose is to provide.

  The tape end detection method of the present invention is a tape end detection that detects the end regardless of the length of the end mark provided on the end of the tape and the presence or absence of the end in the tape supply device that pulls out and supplies the tape from the reel on which the tape is wound. A method of detecting the remaining amount of the tape, a step of detecting one end of the end mark until the remaining amount of the tape reaches the first predetermined remaining amount, and when detecting one end of the end mark, Thereafter, the step of detecting the other end of the end mark within the first predetermined feed time or feed amount, and when the other end of the end mark is detected, immediately or after the second predetermined feed time or feed amount When the other end of the end mark is not detected, when the end of the end mark is not detected after the third predetermined feed time or feed amount after the end of the end mark is detected After the remaining tape becomes the first predetermined remaining capacity, in which each and a step of performing a termination detection notification.

  According to this configuration, when a short end mark is provided at the end portion of the tape, when one end is detected and the other end is detected, the end detection notification is immediately or after the second predetermined feed time or feed amount. If there is a terminal mark that continues to the terminal end, a terminal detection notification is made after the third predetermined feed time or feed amount after detecting one end of the terminal mark, and the terminal mark is not provided. Performs the end detection notification after the remaining amount of the tape being detected reaches the first predetermined remaining amount, so that the end can be accurately detected regardless of the length of the end mark provided at the end of the tape. You can be notified.

  The step of detecting the remaining tape amount includes a step of detecting a rotation angle or a rotation time of the reel when supplying a predetermined length of tape, and a tape winding diameter of the reel is detected from the detected rotation angle or rotation time. And a step of detecting the remaining tape amount from the detected tape winding diameter, the rotation angle or the rotation time of the reel changes according to the tape winding diameter with respect to a predetermined tape supply length. From this, the tape winding diameter can be obtained by detecting the rotation angle or rotation time of the reel at the time of supplying the tape, and the tape remaining diameter can be detected by estimation or calculation from the tape winding diameter. Even if no end mark is provided on the tape, the remaining amount of the tape can be reliably detected.

  Further, when the detected remaining tape amount becomes larger than the first predetermined remaining amount and / or a second predetermined remaining amount larger than the remaining amount at the arrangement position of one end of the end mark, a tape replacement advance notification is performed. In this way, prior notification is made before the end of the tape is reached, so that a reel to be replaced can be prepared in advance. Can be connected.

  The tape supply device of the present invention is a tape supply device that pulls out a tape from a reel on which the tape is wound and supplies the tape, a remaining amount detecting means for detecting the remaining amount of the tape on the reel, and the end of the tape or near the end And a detection sensor for detecting the end mark, and one end of the end mark is detected until the remaining amount of the tape reaches a predetermined remaining amount. When one end of the end mark is detected, a first predetermined The other end of the end mark is detected within the feed time or feed amount, and when the other end of the end mark is detected, the other end of the end mark is detected immediately or after the second predetermined feed time or feed amount. If not, after a third predetermined feed time or feed amount after detecting one end of the end mark, if not detecting one end of the end mark, the remaining amount of the tape becomes a predetermined amount. Each those provided with the sensing control means for terminating the detection notification.

  According to this configuration, the remaining amount of the tape is detected by the remaining amount detection means, one end and the other end of the end mark are detected by the detection sensor, and the tape end detection method is performed by the detection control means. As described above, it is possible to accurately detect and notify the end regardless of the length and shortness of the end mark provided at the end of the tape.

  Further, the means for detecting the remaining tape amount of the reel includes a rotation amount control means for rotating the reel so that the supply length of the tape becomes a predetermined length, and a rotation angle or rotation of the reel when supplying a predetermined length of tape. It comprises a means for detecting time, a means for detecting the tape winding diameter of the reel from the detected rotation angle or rotation time, and a means for detecting the remaining tape amount from the detected tape winding diameter. Even if a terminal mark or the like is not provided at the terminal portion of the adhesive tape, the remaining amount of the tape can be reliably detected based on the tape winding diameter of the reel as described above.

  In addition, when the detected remaining tape amount reaches the second predetermined remaining amount larger than the remaining amount at the end position of the end mark and / or the first predetermined remaining amount, the detection control means sets the tape in advance. If notification is made, prior notification is made before reaching the end of the tape, so that a new tape can be connected by exchanging the reels efficiently as described above.

  According to the tape end detection method and the tape supply device of the present invention, the end can be accurately detected and notified regardless of the length and shortness of the end mark provided at the end of the tape. The reel can be exchanged, the end of the tape and the start of the tape on the new reel can be automatically connected, and the work process performed by supplying the tape while using any tape is interrupted It is possible to supply the tape stably without fear.

  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 apparatus 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 device 6 that presses the adhesive tape 5 from above and attaches it to the substrate 2, the tape supply device 7 that supplies the adhesive tape 5, and the support tape is peeled from the adhesive material layer of the adhesive tape 5 that is attached to the substrate 2. And a tape collecting device 9 that collects the support tape of the peeled adhesive tape 5. Reference numeral 10 denotes a transfer device that transfers the substrate 2 carried into the carry-in position of the adhesive tape attaching device 1 to the positioning device 3.

  As shown in FIG. 2, the pressure bonding device 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, and the pressure bonding head 11. And a head lifting device 12 such as a cylinder device for driving up and down. 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 device 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 a tape connecting device 17 connected by thermal welding, ultrasonic bonding, or the like.

  Further, when the end mark 33 (see FIG. 6) is provided at the end portion of the adhesive tape 5, the detection sensor 32 detects one end and the other end of the end mark 33 by “rise” and “rise” of the detection signal. Is disposed at an upper position of the cutter 16.

  The peeling device 8 includes a movable body 18 capable of reciprocating in the longitudinal direction between the base 4 and the crimping surface 11a of the crimping head 11, and an adhesive tape that is crimped to the substrate 2 as the movable body 18 moves. The tape pressing roller 19a that moves while rolling along the upper surface of the tape 5 is disposed obliquely above the pressing roller 19a, and the support tape of the adhesive tape 5 is wound around a part of the outer periphery to move the moving body 18. Along with this, the tape peeling roller 19b that peels the supporting tape and the supporting tape that is provided on the moving body 18 and is peeled off when necessary are fixed, and the adhesive layer of the adhesive tape 5 is attached to the substrate 2 according to the length of attachment. The chuck 20 feeds the adhesive tape 5.

  The tape recovery device 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 means 23 that sucks and recovers the support tape.

  In the adhesive tape applying device 1 having the overall configuration described above, in this embodiment, as shown in FIGS. 3 and 4, the tape supply device 7 detects the remaining amount and the end of the adhesive tape 5 wound around the reel 13. And is configured to notify you. 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 encoder 27 may be provided on the travel path of the adhesive tape 5 in addition to the motor 26 and the rotation shaft of the reel 13. Preferably, it is provided between the tension roller 15 and the reel 13 or on the rotation shaft of the reel 13 so that the remaining amount of the adhesive tape 5 drawn out from the reel 13 can be accurately determined in a state where the travel load of the adhesive tape 5 is small. Can be sought.

  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. Further, the rotation angle signal detected by the rotation angle detecting means 29 is input to the tape winding diameter calculating means 30 to calculate the tape winding diameter. The tape winding diameter data of the calculation result and the detection signal of one end or the other end of the end mark 33 by the detection sensor 32 are input to the detection control means 31, and the remaining tape amount is detected based on the tape winding diameter. Based on the detected remaining tape amount and a detection signal from the detection sensor 32, the remaining tape amount or the end of the tape is detected and notified to the control unit of the adhesive tape applying device 1.

  The operation of the detection control means 31 will be described with reference to FIGS. First, the tape remaining amount of the adhesive tape 5 is detected from the input tape winding diameter data (step # 1), and when the tape remaining amount becomes the second predetermined remaining amount R2, a tape replacement advance notice is issued. Perform (Step # 2). The predetermined remaining amount R2 is set to a remaining amount at a position where one end of the end mark 33 is disposed and / or a remaining amount which is larger than a first predetermined remaining amount R1 which will be described later. Thereafter, one end of the end mark 33 is subsequently detected (step # 3). If one end of the end mark 33 is detected, then the other end of the end mark is detected within the first predetermined feed time or feed amount T1 (step # 4, step # 5). When the other end of the end mark 33 is detected, as shown in FIG. 6A, the end detection notification is performed immediately or after the second predetermined feed time or feed amount T2. On the other hand, when the other end of the end mark 33 is not detected within the first predetermined feed time or feed amount T1, the third predetermined feed time or feed amount T3 is detected after detecting one end of the end mark 33. Then (step # 6), as shown in FIG. 6B, the end detection notification is performed. In addition, when one end of the end mark 33 is not detected in step # 3, when the remaining tape amount reaches the first predetermined remaining amount R1 (step # 7), as shown in FIG. Perform end detection notification.

  Next, the process for obtaining the tape winding diameter of the reel 13 as well as the process for attaching the adhesive tape 5 to the side edge of the substrate 2 by the adhesive tape applying 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 device 3 from the state shown in FIGS. 1 and 2, the pressure head 11 is moved down by the head lifting / lowering device 12. 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 device 7 side with the chuck 22 of the tape collecting unit 9 closed to hold and fix the support tape of the adhesive tape 5 and the chuck 20 of the peeling device 8 opened. By this operation, the supporting 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 device 8 is closed to hold the adhesive tape 5, and the chuck 22 of the tape recovery device 9 is opened so that the support tape can be sucked and collected freely by the recovery means 23. 3 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. With this operation, in the tape supply device 7, as shown in FIG. 3, from the state where the tension roller 15 is detected by the origin sensor 24, as shown in FIG. 7, between the origin sensor 24 and the upper limit sensor 25a. Ascend to position. 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. 8, 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. 9, 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).

In the above description, an 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 shown. 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. 10, if it takes t hours 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).

  The rotation time of the motor 26 is such that the position of the tension roller 15 after the supply of the adhesive tape 5 after the position of the tension roller 15 deviates from the origin position of the origin sensor 24 with the supply of the adhesive tape 5 The time for rotating the motor 26 until the position is detected may be detected as the rotation time of the reel 13.

  When the winding length of the adhesive tape 5 around the reel 13 is managed with high accuracy, the tape feed amount S due to the feeding operation of the adhesive tape 5 by the moving body 18 of the peeling device 8 is counted, and the reel The tape remaining amount on the reel 13 may be detected by subtracting from the initial 13 tape winding length. However, in practice, the winding length of the adhesive tape 5 on the reel 13 is often larger and varied than the numerical value described on the reel 13, and the remaining tape amount is detected by detecting the supply rotation angle of the reel 13 or It is preferable to obtain by the feeding time.

  Thus, the tape winding diameter data calculated and detected by the tape winding diameter calculating means 30 is input to the detection control means 31, and the above-described tape winding diameter and the detection signal from the detection sensor 32 are used as described above. Thus, the end of the adhesive tape 5 is detected and notified. That is, when the short end mark 33 is provided at the end of the adhesive tape 5 as shown in FIG. 6A by the detection control means 31, the first predetermined feed is detected after detecting one end thereof. When the other end is detected during the time or the feed amount T1, a termination detection notification is sent immediately or after the second predetermined feed time or feed amount T2, and as shown in FIG. In the case where the terminal mark 33 is provided, after one end of the terminal mark is detected, a terminal end notification is issued after the third predetermined feed time or feed amount T3, and the terminal mark 33 is provided as shown in FIG. If not, the end detection notification is made after the detected tape remaining amount reaches the first predetermined remaining amount R1, so that the end is determined regardless of the length of the end mark provided at the end of the tape and the presence or absence of the end mark. Detect and notify accurately It can be.

  When the control unit of the adhesive tape applying device 1 receives the end detection notification, after completing the crimping operation in the middle of the operation thereafter, the next crimping operation is stopped and the reel replacement mode is entered. In the reel replacement mode, the reel 13 is replaced and a new reel 13 is set in the tape supply device 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 device 17. The operation command is issued sequentially so as to connect. Thus, the adhesive tape 5 can be continuously supplied. 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 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 end detection of the protective tape.

  According to the tape end detection method and the tape supply device of the present invention, the end can be accurately detected and notified regardless of the length and shortness of the end mark provided at the end of the tape. The reel can be replaced, and the end of the tape can be automatically connected to the beginning of the tape on the new reel, without interrupting the process of supplying the tape while using any tape. Since the tape can be supplied, it can be suitably used for a component mounting apparatus for mounting various components by attaching an adhesive tape to a substrate.

The whole perspective view of one embodiment of the adhesive tape sticking device to which the present invention is applied. The expansion perspective view of the principal part of the embodiment. The front view which shows the structure of the tape supply apparatus of the embodiment. The block diagram which detects the termination | terminus of the adhesive tape in the tape supply apparatus. The operation | movement flowchart of the detection control means which detects the termination | terminus of the adhesive tape in the tape supply apparatus of the embodiment. Explanatory drawing of the termination | terminus detection operation | movement of the adhesive tape in the embodiment. Operation | movement explanatory drawing in the tape supply apparatus of the embodiment. Operation | movement explanatory drawing in the tape supply apparatus of the embodiment. Explanatory drawing of the tape winding diameter calculation method in the tape supply apparatus. Explanatory drawing of the other tape winding diameter calculation method in the tape supply apparatus. The adhesive tape in a prior art example is shown, (a) is a perspective view of a termination | terminus part, (b) is explanatory drawing of the detection operation | movement of a termination | terminus mark.

Explanation of symbols

5 Adhesive tape 7 Tape supply device 13 Reel 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 Detection control means 32 Detection sensor 33 End mark

Claims (6)

  A tape end detection method for detecting the end of a tape supply device that pulls out a tape from a reel on which the tape is wound and detects whether the end mark provided at the end of the tape is long or short. A step of detecting, a step of detecting one end of the end mark until the remaining amount of the tape reaches the first predetermined remaining amount, and a first predetermined feed time or the time after detecting one end of the end mark The step of detecting the other end of the end mark within the feed amount, and when the other end of the end mark is detected, the other end of the end mark is detected immediately or after the second predetermined feed time or feed amount. If no end mark is detected after the third predetermined feed time or feed amount after detecting one end of the end mark, the remaining tape amount becomes the first predetermined remaining amount. After Tsu, tape end detection method characterized by each and a step of performing a termination detection notification.   The step of detecting the remaining tape amount includes a step of detecting the rotation angle or rotation time of the reel when supplying a predetermined length of tape, and a step of detecting the tape winding diameter of the reel from the detected rotation angle or rotation time. A method for detecting the end of a tape according to claim 1, further comprising a step of detecting a remaining tape amount from the detected tape winding diameter.   When the detected remaining tape amount becomes a second predetermined remaining amount that is larger than the first predetermined remaining amount and larger than the remaining amount at the position where one end of the end mark is disposed, a tape replacement advance notification is performed. The tape end detection method according to claim 1 or 2.   A tape supply device that pulls out and supplies a tape from a reel around which the tape is wound, and a remaining amount detecting means for detecting the remaining amount of the tape on the reel, and a detection for detecting an end mark provided at or near the end of the tape The sensor detects one end of the end mark until the remaining amount of the tape reaches the predetermined remaining amount. When one end of the end mark is detected, the end of the end mark is subsequently performed within the first predetermined feed time or feed amount. When the other end of the mark is detected and the other end of the end mark is detected, if one end of the end mark is not detected immediately or after the second predetermined feed time or feed amount, one end of the end mark is detected. Detecting that each end detection notification is made after the remaining amount of tape reaches a predetermined amount when one end of the end mark is not detected after the third predetermined feed time or feed amount after detection. Tape supply apparatus characterized by comprising a control means.   The means for detecting the remaining tape amount of the reel includes a rotation amount control means for rotating the reel so that the supply length of the tape becomes a predetermined length, and a rotation angle or a rotation time of the reel when supplying the predetermined length of tape. 5. The means for detecting, comprising: means for detecting the tape winding diameter of the reel from the detected rotation angle or rotation time; and means for detecting the remaining amount of tape from the detected tape winding diameter. Tape feeder.   When the detected tape remaining amount reaches the second predetermined remaining amount that is larger than the remaining amount at the arrangement position of one end of the end mark and / or the first predetermined remaining amount, a tape replacement advance notice is issued. 6. The tape supply device according to claim 4, wherein the tape supply device is used.

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