JP2005059986A - Tape conveying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the detection error of photosensors from occurring due to chattering. <P>SOLUTION: This tape conveying device comprises a tape for TCP in which perforations are formed at equal intervals, rollers conveying the tape, a motor rotating the rollers, two photosensors detecting the ON and OFF of light produced when the light passes the perforations, a detection frequency count circuit generating adding signals and deducting signals by combining, with each other, ON and OFF signals detected by the photosensors with different phases, and a drive circuit intermittently driving the motor based on the detection frequency of the adding signals and deducting signals. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention is based on TCP (Tape Carrier
The present invention relates to a device for transporting tape such as Package) and COF (Chip On Film).

In a conventional tape transport apparatus, a method of detecting a tape feed amount by turning on and off light generated when perforation provided on a tape passes under an optical sensor is commonly used. FIG. 10 is an example of a detection waveform when the tape is fed to the right by the conventional method. The horizontal axis is the tape travel distance (or time), the vertical axis is the output of the light receiving element, OFF is zero, and the optical sensor is defined to turn on when the output of the light receiving element exceeds a predetermined amount. Yes. Further, when the output of the optical sensor changes from ON to OFF, the number of detections of the optical sensor is defined as addition 1. Under such a definition, when chattering in FIG. 10 occurs, the addition is 3, and the number of times from ON to OFF is counted extra. As described above, the occurrence of chattering has a drawback that it is considered that the perforation is passed as many times as chattering is detected.

On the other hand, chattering detection preventing devices are also commonly used (see, for example, Japanese Patent Laid-Open Nos. 2001-214663 and 10-104018). The chattering detection preventing method disclosed in Japanese Patent Laid-Open No. 2001-214663 is a method of counting only pulse signals that are continuous for a predetermined time or more. This is a method of removing a pulse signal corresponding to a fast speed. However, both methods have a problem that the chattering signal is erroneously counted as a normal signal in the tape feeding mechanism whose main operation is to intermittently feed the resin tape at a low speed.

Further, the conventional optical sensor has a problem that the mounting position of the optical sensor has to be changed every time the type of the tape is changed.
JP 2001-214663 A Japanese Patent Laid-Open No. 10-104018

The present invention is intended to solve the above-mentioned problems, and a first object of the present invention is to provide a tape transport apparatus that prevents erroneous counting due to chattering in practical use. A second object is to provide a tape transport device that does not change the mounting position of the optical sensor even if the tape is replaced with a tape having a different width.

  In order to achieve the above object, in the tape feeding mechanism of the present invention, the tape feeding mechanism, the optical sensor, and the detection frequency count for counting the number of detections of the ON signal and the OFF signal detected by the optical sensor by the movement of the tape. A tape transport device comprising a circuit and a control mechanism for intermittently feeding a tape based on the number of detections, wherein the optical sensor comprises a first optical sensor and a second optical sensor, and the first optical sensor and the second optical sensor. The optical sensor is disposed at a position separated from the tape feeding direction. By adopting such a configuration, even if all the signals due to chattering are counted, it becomes possible to cancel the pulse signals output due to chattering, and no erroneous counting will occur.

The detection count circuit according to the present invention subtracts 1 from the number of detections when the second photosensor changes from ON to OFF while the first photosensor is OFF, and the first photosensor is OFF. When the second optical sensor changes from OFF to ON, 1 is added to the number of detections. When the first optical sensor is ON and the second optical sensor changes from ON to OFF, 1 is added to the number of detections. When the first optical sensor is ON and the second optical sensor changes from OFF to ON, 1 is subtracted from the number of detections, and when the second optical sensor is OFF and the first optical sensor changes from ON to OFF, the signal 1 is added to the number of times, and when the first optical sensor changes from OFF to ON while the second optical sensor is in the OFF state, 1 is subtracted from the number of detections, and the second optical sensor is ON and the first optical sensor is ON When changing to OFF, subtract 1 from the number of signals and When the light sensor is the first optical sensor in the ON state is changed to ON from OFF, the function Yes adds one to the signal count. Even if all the signals due to chattering are counted by the frequency circuit having such a function, the pulse signals output due to chattering are canceled out, so that erroneous counting can be eliminated.

The detection count circuit of the present invention adds 1 to the number of signals when the first optical sensor is OFF and the second optical sensor changes from ON to OFF, and the first optical sensor is OFF and the second optical sensor is 1 is subtracted from the number of signals when changing from OFF to ON, 1 is subtracted from the number of signals when the first photosensor is ON and the second photosensor is changed from ON to OFF, and the first photosensor is ON. When the two-light sensor changes from OFF to ON, 1 is added to the number of signals. When the second light sensor is OFF and the first light sensor changes from ON to OFF, 1 is subtracted from the number of signals. 1 is added to the number of signals when the first optical sensor changes from OFF to ON when is OFF, and 1 is added to the number of signals when the second optical sensor is ON and the first optical sensor changes from ON to OFF, And the second light sensor is ON and the first light Capacitors is equal to or subtracting 1 to the signal number when changing to ON from OFF.

  Further, the optical sensor is preferably a line sensor that is long in the width direction of the tape so that the position of the tape having a different perforation position in the width direction can be detected without changing the mounting position of the optical sensor.

  The tape transport device of the present invention can eliminate erroneous counting due to chattering by using two optical sensors having different phases and adopting a new detection frequency counting algorithm, and has an advantage of detecting the tape traveling direction. is there.

  Furthermore, the tape transport device of the present invention uses a line sensor as an optical sensor, so that it is not necessary to change the mounting position of the optical sensor even when switching to a tape having a different width, and the time required for switching to the tape is greatly increased. There is an advantage that can be shortened.

  The object of preventing miscounting due to chattering could be realized by arranging the two photosensors at different phases. Furthermore, the purpose of shortening the switching time of tapes having different widths could be realized by using a line sensor as an optical sensor.

  FIG. 1 is a perspective view showing a relationship between a tape transport mechanism and a sensor. The tape 1 is fed from the left to the right while being tensioned by the tension roller 2 and the feed roller 3. The tape 1 is perforated with perforations 6 at both ends thereof. Both ends of the tape 1 are guided by a tape guide plate to regulate the amount of movement of the tape in the width direction.

The tension roller 2 includes an upper roller 2 a and a lower roller 2 b, and one set is disposed on each end of the tape 1 upstream of the feed roller 3. Each tension roller has the same size and shape, a diameter of 50 mm, and a width of 5 mm. The lower roller 2 b is a drive roller, and the left and right lower rollers 2 b are connected by a shaft and can be rotated by a motor 7. On the other hand, the upper roller 2a is a driven roller that is urged downward by a spring (not shown) and presses the tape 1 while sandwiching the tape 1 with the lower roller 2b. The biasing force of the spring can be adjusted with a screw or the like.

The torque motor 7 can arbitrarily set the detent torque by the motor driver 2. The torque motor 7 does not rotate even when less than a predetermined tension is applied to the tape 1, but rotates when a predetermined tension or more is applied to the tape 1. The biasing force of the spring is for generating a frictional force that prevents the tape 1 from slipping between the upper roller 2a and the lower roller 2b when the tension roller 2 is operating.

When the feed roller 3 starts rotating and a tension of a predetermined level or more is generated on the tape 1, the torque motor rotates and the tension roller 2 rotates, so that the tape 1 is fed with a constant tension. When a resin is applied to the tape 1, it is an essential matter to apply a tension to the tape 1. The reason is that if the tape is loose, the tape undulates so that the resin cannot be applied in a predetermined shape, and if the resin is underfilled while the tape is undulated, the tape 1 and the semiconductor element This is because the gap between the layers becomes non-uniform, resulting in poor application of resin.

The feed roller 3 includes an upper roller 3a and a lower roller 3b, and feeds the tape 1 with the upper and lower rollers interposed therebetween. The upper roller 3a is a driven roller in which a spring (not shown) for pressing the tape is connected between the upper roller 3a and the lower roller 3b. On the other hand, the lower roller 3 b is a drive roller connected to the servo motor 8.

The tape feeding mechanism includes a tension roller 2 and a feeding roller 3. Further, in a TCP mounting apparatus provided with a resin curing device, a feed roller 11 (see FIG. 9) is provided further downstream of the resin curing device. This feed roller is controlled to synchronize with the feed roller 3 with a time difference. Specifically, the feed roller 11 stops rotating after 0.1 to 0.5 seconds after the feed roller 3 stops rotating, and 0.1 to 0 before the feed roller starts rotating. Rotation starts 5 seconds ago.

  The tape 1 has a width of 48 mm and is provided with perforations 6 on both side edges. The perforations 6 are 2 mm square holes and are provided on the side edges at arbitrary intervals (for example, 5 mm). On the tape 1, semiconductor elements are mounted in one or a plurality of rows (not shown). The roller is disposed on the side edge of the tape 1 and, as a result, is disposed so as to sandwich a part of the perforation 6 vertically.

  The optical sensor includes a first optical sensor 4 and a second optical sensor 5, and is disposed between the tension roller 2 and the feed roller 3. The detected light is photoelectrically converted and sent to a sensor amplifier (see FIG. 7).

  FIG. 2 is a block diagram relating to control of the tape transport apparatus. The signal from the optical sensor is amplified by the sensor amplifier and sent to the transport device controller. The conveyance device controller incorporates a detection count circuit, a conveyance start / stop circuit, and a motor control circuit. These electronic circuits are controlled by the panel computer of the apparatus. Installation of the control program and input / correction of parameters are performed by a panel computer.

  The transport device controller includes a detection count circuit and a transport start / stop control circuit. The ON and OFF signals from the optical sensor are counted by a detection count circuit. When the number of detections counted by the detection number counting circuit is subtracted from the predetermined number of detections set by the tape movement command and the remaining number becomes zero, a command to stop the rotation of the roller is output. It may be set to stop after a predetermined time after the remaining number becomes zero. The roller rotation start command is output using another condition as a trigger (for example, after the dispensing operation or the like is completed). A command from the conveyance start / stop control circuit is sent to the motor driver, and a motor drive pulse is sent from the motor driver to the motor, so that the motor starts and stops rotating. Further, in the torque motor, the detent torque of the motor can be determined by a signal from the transport device controller, and further, it can be rotated forward and backward.

FIG. 3 is a diagram for explaining the relationship between the two photosensors (4, 5) and the perforation 6.
The optical sensor 4 includes a light emitting element 4a and a light receiving element 4b. An electric signal obtained by photo-electrically converting the light 4c emitted from the light emitting element 4a by the light receiving element 4b is sent to a sensor amplifier. Since the light 4 c does not pass through the tape 1, the light sensor is designed to be turned on only when the light 4 c passes through the perforation 6. The state where the light 4c is blocked by the tape 1 is OFF of the optical sensor. The optical sensor 5 is substantially the same as the optical sensor 4 except for the sign.

As an example of the positional relationship between the optical sensor 4 and the optical sensor 5, a state in which the light 4c and the light 5c pass through different perforations and pass through opposite sides with respect to the perforation center line 6a. The separation distance between the light 3c and the light 4c is not an integral multiple of the distance (pitch) between perforations, and is set so as to satisfy a condition that does not exist simultaneously in a region where chattering occurs. By providing such a relationship, when one of the optical sensors is chattering on one side of the perforation, the other optical sensor can maintain the ON or OFF stable state.

  As described above, the optical sensors (4, 5) are arranged so as to be separated from each other in the tape moving direction (for example, 5 × n + 1 mm (n: integer)) when the pitch is 5 mm and the perforation is 2 mm square. However, it may be arranged on the left and right sides of the tape. Also in this case, the optical sensor is separated from the moving direction of the tape so that chattering does not occur at the same time.

FIG. 4 is a diagram showing a detection waveform when chattering does not occur. The vertical axis is an output signal from the light receiving element, and the horizontal axis is the moving distance of the tape. The separation distance between the two optical sensors (4, 5) is the same as that described with reference to FIG.

FIG. 4A shows a case where the phase of the first optical sensor is arranged at a position delayed from the second optical sensor with respect to the tape traveling direction, and the tape 1 is fed rightward in FIG. It is a detection waveform in the case. OFF is a state where the light receiving element does not detect light, and ON is a state where the light receiving element detects light. a1 to a6 and b1 to b6 indicate the time when the optical sensor changes from ON to FF or from OFF to ON.

FIG. 4B shows a detection waveform when the tape 1 is fed leftward. Similarly, OFF is a state where the light receiving element does not detect light, and ON is a state where the light receiving element detects light. Contrary to FIG. 4A, the phase of the first photosensor is advanced from that of the second photosensor.

Here, a counting algorithm for counting the number of detections by combining ON and OFF of the two optical sensors generated when the tape is fed will be described below.
The counting algorithm is
1. When the first optical sensor is OFF and the second optical sensor changes from ON to OFF, 1 is subtracted from the number of signals,
2. When the first optical sensor is OFF and the second optical sensor changes from OFF to ON, 1 is added to the number of signals,
3. When the first optical sensor is ON and the second optical sensor changes from ON to OFF, 1 is added to the number of signals,
4). When the first optical sensor is ON and the second optical sensor changes from OFF to ON, 1 is subtracted from the number of signals,
5). When the second light sensor is OFF and the first light sensor changes from ON to OFF, 1 is added to the number of signals,
6). When the second optical sensor is OFF and the first optical sensor changes from OFF to ON, 1 is subtracted from the number of signals.
7). 7. When the second photosensor is ON and the first photosensor changes from ON to OFF, subtract 1 from the number of signals, and When the second optical sensor is ON and the first optical sensor changes from OFF to ON, it is configured to add 1 to the number of signals.

  When this counting algorithm is used, one addition is generated once for each of a1, a2, a3, a4, a5 and a6 in FIG. Furthermore, one addition is generated once for each of b1, b2, b3, b4, b5 and b6. In FIG. 4B, one subtraction is generated once for each of c1, c2, c3, c4, c5 and c6. Furthermore, one subtraction is generated once for each of d1, d2, d3, d4, d5 and d6. That is, when the tape is sent to the right, one addition is generated four times per perforation, and when the tape is sent to the left, one subtraction is generated four times per perforation. If n perforations are passed, 4n additions or subtractions are generated.

  FIG. 5 is a schematic diagram of chattering. FIG. 4 (a) is an example of chattering that occurs when the optical sensor changes from the OFF state to the ON state. FIG. 4B is an example of chattering that occurs when the optical sensor changes from the ON state to the OFF state. The chattering detection waveforms are all described in the same manner, but actually, the waveforms are various. In addition, since a threshold value is set in advance and chattering does not occur unless the light amount of the light receiving element reaches the threshold value, chattering does not necessarily occur whenever the detection amount of the optical sensor changes.

FIG. 6 shows a case where chattering occurs twice at the fall of the first photosensor and no chattering occurs at other times.
a1 is 1 subtraction 3 times, 1 addition 2 times (accumulating and subtracting 1)
a2, a3, and a4 are 1 subtraction b1, b2, b3, and b4, respectively: 1 subtraction is generated when the tape moves leftward and passes 1 perforation, and the influence of chattering is eliminated. ing. Note that 1 addition and 1 subtraction depend on the moving direction of the tape, but can be changed depending on the definition of 1 addition and 1 subtraction in the counting algorithm. Therefore, the case where the tape advances is the addition, and the case where the tape returns is the subtraction. Even if it is not, there is no problem in the control of the tape feeding. Further, even if the tape advance direction is set as subtraction and the tape return direction is set as addition in the logic circuit, no problem occurs in the tape feed control.

FIG. 7 shows a case where chattering occurs twice when the first photosensor rises and chattering does not occur elsewhere.
a1 is 1 subtraction,
a2 is calculated by adding 1 subtraction 3 times, 1 addition 2 times, and subtracting 1
a3 and a4 are each 1 subtraction,
b1, b2, b3 and b4 are subtracted by 1,
When one perforation passes, one subtraction is generated four times, and the influence of chattering is eliminated.

In addition to the widths of 35, 48, and 70 mm, there are semi-standard tapes and wide tapes. The standard tape 1a and the wide tape 1b have the same width, but the positions of the perforations 6 are different. The wide tape 1b is designed so that the position of the perforation is arranged at the end and the tape width that can be effectively used is widened. However, since the wide tape has a drawback that the strength of perforation is lowered, there is a disadvantage that the perforation is deformed or damaged when a strong force is applied to the tape.

  FIG. 8 is a diagram for explaining that by using a line sensor as an optical sensor, light detection can be performed without changing the mounting position of the optical sensor even when the width of the tape is changed. Shows a schematic of 5mm wide tapes. Tape widths of 35, 48 and 70 mm are industry standards. For this reason, for example, when a tape with a width of 48 mm and an effective width of a tape for mounting an electronic component is less than 3 mm, a tape with a tape width of 70 mm must be used. In such a case, it is economical to use a wide tape with the perforation position arranged on the outside.

  Examples of standard tapes are shown in FIGS. 8 (a) and 8 (b), and examples of wide tapes are shown in FIGS. 8 (c) and 8 (d). FIGS. 8B and 8D are plan views of the optical sensor. 8A is a cross-sectional view along AA, and FIG. 8C is a cross-sectional view along BB. In the plan view, one hole of perforation and two light emitting elements are broken lines, and in the sectional view, the light receiving region of the light receiving element is shown. In addition, the tape (1a, 1b) has shown only the edge part of the one side of a tape.

Perforations 6 are perforated at both ends of the standard tape 1a. Two lasers 10 are disposed on the lower surface of the light emitting element 4a. A light receiving element 4b is disposed at a position where the light beam 4c emitted from the laser 10 can be received. In the plan view, the light emitting element 4a and the light receiving element 4b are overlapped so as not to complicate the drawing. For the light beam 4c, a laser 10 on the right side (inner side) corresponding to perforation is used. The lasers can be controlled individually, and the laser on the left side (outside) should not emit light because it causes a malfunction. As described in FIG. 3, the second optical sensor 4 b is the same sensor as the first optical sensor, and the mounting position is provided apart from the first optical sensor.

In the above embodiment, the standard tape and the wide tape are exemplified, but any tape width can be handled by using a wider line sensor without changing the mounting position of the optical sensor.

  FIG. 9 shows a resin coating and curing device which is an application example of the tape transport device of the present invention. Tape feeding mechanism 17, tension roller 2 for applying back tension to tape 1, optical sensors (4, 5), resin dispensers (12, 13), feeding roller 3, resin curing device 19, feeding roller 11, and tape winding device It consists of 20. The tape feeding method is not a sprocket method using sprocket gears for the feeding rollers (3, 11), but a feeding roller is a roller and a roller method using perforation for detecting the position of tape feeding.

  The tape feeding mechanism 17 includes a feeding reel 14 and a take-up reel 16. The feed reel 14 is obtained by winding a tape 1 on which an electronic component such as a semiconductor chip is sandwiched between spacers 1c. The spacer 1c that is fed each time the tape 1 is fed is wound around the take-up reel 16. . Resin dispensers are classified into a single head type and a multi head type. Although two heads are illustrated in FIG. 9, four heads or one head may be used.

  The resin curing device 19 is a three-stage furnace. The furnace length is 3 m to 4 m. Reversing rollers (21, 22) for reversing the conveying direction of the tape 1 are provided in the furnace. A heater is provided for each stage in the furnace. The inside of the furnace is an atmosphere of nitrogen gas. The resin applied by the resin dispenser (12, 13) is heated in the furnace and evaporates the solvent in the vicinity of the furnace entrance. A gas discharge port (not shown) is provided for discharge to the outside.

In the resin coating and curing apparatus, the length of the tape from the reel 14 to the reel 15 is more than a dozen meters, and a large force is applied to the tape to feed the tape. When the tape thickness is 30 μm or less, tape feeding by the sprocket gear becomes difficult, so that the tape transport device according to the present invention is particularly effective.

  In the present invention, perforation is shown as an example of the position mark on the tape, but it may be a printed mark or a copper thin film of printed wiring formed by etching. Since perforation is commonly used for TCP tapes, it has a high practical value, but it has drawbacks such as reducing the strength of the tape and making it difficult to drill fine pitches. It becomes effective.

The positioning of the TCP tape is usually performed by feeding the tape by using perforation to perform rough positioning, and then detecting the alignment mark formed on the tape with a CCD camera or the like for accurate positioning. Even if the alignment mark is detected by an optical sensor or the like and a CCD camera is not used, the tape can be positioned with high accuracy. In the present invention, a capacitive sensor or a magnetic sensor may be used instead of the optical sensor.

The ON-OFF determination of the optical sensor may be determined that the light amount detected by the optical sensor is differentiated with respect to time, and when the fine count changes from zero or minus to plus, it is determined that the light sensor is turned on once. Similarly, OFF may be determined to be ON once when the light quantity detected by the optical sensor is differentiated by time and the fine count changes from plus to minus.

  The object detected by the optical sensor is not limited to square perforation, and can be applied to a line posted on a tape. In addition to the resin sealing device, the tape transport device can be applied to a flip chip mounting device, an IC handler, and the like.

It is a perspective view which shows the relationship between the conveyance mechanism of a tape, and the optical sensor which detects perforation. It is a block diagram of a detection control circuit. It is a figure which illustrates the position of two photosensors. It is a figure which shows the case where chattering does not arise with the detection waveform of two optical sensors. It is a figure which shows the example of chattering. It is a detection waveform of the 1st photosensor and the 2nd photosensor when the 1st photosensor changes from OFF to ON. It is a detection waveform of a 1st photosensor and a 2nd photosensor when a 1st photosensor changes from ON to OFF. It is a figure explaining position detection of a standard width tape and a wide tape with the same optical sensor. It is a front view of the resin sealing apparatus using the tape conveying apparatus which becomes this invention. An example of the number of times of detection when chattering is counted by a conventional method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tape 1a Standard tape 1b Wide tape 2 Tension roller 2a Upper roller 2b Lower roller 3 Feed roller 3a Upper roller 3b Lower roller 4 1st photosensor 4a Light emitting element 4b Light receiving element 4c Light beam 5 2nd photosensor 5a Light emitting element 5b Light receiving Element 5c Light beam 6 Perforation 6a Perforation center line 7 Torque motor 8 Servo motor 9 Tape guide plate 10 Laser 11 Feed roller 12, 13 Dispenser 14 Feed reel 15 Tape take-up reel 16 Spacer tape take-up reel 17 Tape feed mechanism 18 Resin coating Mechanism 19 Resin curing device 20 Tape winding mechanism 21, 22 Reverse roller

Claims (4)

Tape feeding mechanism, optical sensor, detection number counting circuit for counting the number of detections of ON and OFF signals detected by the optical sensor by moving the tape, and a control mechanism for intermittently feeding the tape based on the number of detections In a tape transport device comprising:

The optical sensor consists of a first optical sensor and a second optical sensor,

The tape conveyance device, wherein the first optical sensor and the second optical sensor are arranged at positions separated from the tape feeding direction so as not to detect chattering at the same time. The detection count circuit is
When the first optical sensor is OFF and the second optical sensor changes from ON to OFF, 1 is subtracted from the number of signals,
When the first optical sensor is OFF and the second optical sensor changes from OFF to ON, 1 is added to the number of signals,
When the first optical sensor is ON and the second optical sensor changes from ON to OFF, 1 is added to the number of signals,
When the first optical sensor is ON and the second optical sensor changes from OFF to ON, 1 is subtracted from the number of signals,
When the second light sensor is OFF and the first light sensor changes from ON to OFF, 1 is added to the number of signals,
When the second optical sensor is OFF and the first optical sensor changes from OFF to ON, 1 is subtracted from the number of signals.
When the second optical sensor is ON and the first optical sensor changes from ON to OFF, 1 is subtracted from the number of signals, and when the second optical sensor is ON and the first optical sensor changes from OFF to ON, the signal 2. The tape transport device according to claim 1, wherein 1 is added to the number of times. The detection count circuit is
When the first optical sensor is OFF and the second optical sensor changes from ON to OFF, 1 is added to the number of signals,
When the first optical sensor is OFF and the second optical sensor changes from OFF to ON, 1 is subtracted from the number of signals.
When the first optical sensor is ON and the second optical sensor changes from ON to OFF, 1 is subtracted from the number of signals.
When the first optical sensor is ON and the second optical sensor changes from OFF to ON, 1 is added to the number of signals,
When the second optical sensor is OFF and the first optical sensor changes from ON to OFF, 1 is subtracted from the number of signals.
When the second photosensor is OFF and the first photosensor changes from OFF to ON, add 1 to the number of signals,
When the second optical sensor is ON and the first optical sensor changes from ON to OFF, 1 is added to the number of signals, and when the second optical sensor is ON and the first optical sensor changes from OFF to ON, the signal 2. The tape transport device according to claim 1, wherein 1 is subtracted from the number of times.   The optical sensor is a line sensor that is long in the width direction of the tape so that the position of a tape having a different perforation position in the width direction can be detected without changing the mounting position of the optical sensor. The tape conveying device according to claim 1