TWI548583B - Tape supply device - Google Patents

Description

Belt supply device

The present invention relates to a tape feeding device.

A device for supplying a tape in a state in which a flat roll is placed on a mounting table is known (for example, see Patent Document 1). When the flat-wound tape is supplied from the tape to the tape, the tape is gradually twisted and accumulated. Therefore, in the device described in Patent Document 1, the tape roll (corresponding to a flat roll) is placed on the rotary table. The rotating table is rotated while feeding the belt, thereby eliminating the distortion of the belt.

[prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-200179

In Patent Document 1, a reflection type detector is used to detect a discharge position of a belt, and the rotation of the rotary table is controlled based on the detection result. (See Fig. 2 of Patent Document 1). However, when the detection light is reflected by the rotation axis as in Patent Document 1, if the rotation axis vibrates during the rotation of the rotary table, the optical path of the reflected light will be deviated, so that there is a possibility of erroneous detection.

The object of the present invention is to improve the detection accuracy of the tape.

In order to achieve the above object, a tape supply device according to a main aspect of the present invention is characterized in that the tape supply device includes a rotatable mounting table on which a flat roll type tape is placed, and the flat roll placed on the mounting table a guide ring that is disposed in the axial direction of the reel and that is rotatable together with the mounting table, and a guide ring that is disposed to surround the guide shaft and that forms an annular gap with the guide shaft, and has a light-emitting portion and a light-receiving portion And a detector for detecting a position of the tape drawn from the flat roll of the annular gap; and a rotating mechanism for rotating the mounting table and the guiding shaft; and the light emitting portion and the light receiving portion are The detection light is disposed on the guide ring so as to be outside the guide shaft.

Other features of the present invention will be understood from the description of the specification and the drawings described below.

According to the present invention, the detection accuracy of the tape can be improved.

1‧‧‧ optical cable

2‧‧‧Fiber unit

3‧‧‧Fiber ribbon

4‧‧‧ Identification line

5‧‧‧Anti-tension body

6‧‧‧Tear rope

7‧‧‧ outer coating

10‧‧‧flat roll

11‧‧‧Band (bundling tape)

12‧‧‧With the end

20‧‧‧ mounting table

21‧‧‧ openings

22‧‧‧Support parts

30‧‧‧Band supply device

32‧‧‧Tensile adjustment mechanism

32A‧‧‧Main Roller

32B‧‧‧ driven roller

32C‧‧‧Torque adjusting motor

34‧‧‧Rotating mechanism

36‧‧‧Twist detection department

36A‧‧‧Guidance axis

36B‧‧‧ Guide ring

38‧‧‧ Controller

40‧‧‧Manufacture of equipment

41‧‧‧Band former

42‧‧‧SZ distribution tray

43‧‧‧Bob

44‧‧‧Operating device

47‧‧‧Extrusion device

48‧‧‧ reel

50‧‧‧Detector sensor

51(A~D)‧‧‧Lighting Department

52(A~D)‧‧‧Receiving Department

54‧‧‧Upper guide board

55‧‧‧Lower guide board

Fig. 1 is an explanatory view of the strap supply device 30.

Fig. 2 is an explanatory diagram of the arrangement of the detecting sensor 50.

Figure 3 is a flow diagram of the processing of controller 38.

Figure 4 is a plot showing the relationship between the release distance and the number of allowable twisted rotations.

Fig. 5A is an explanatory view showing the arrangement of the detecting sensor 50 of the first comparative example, and Fig. 5B is an explanatory view showing the arrangement of the detecting sensor 50 of the second comparative example.

Fig. 6 is a cross-sectional view of the optical cable 1 having the strap 11.

Fig. 7 is a flow chart showing a manufacturing apparatus 40 of the optical cable 1 using the tape supply device 30.

Fig. 8A is a reference explanatory view showing a case where the strap 11 is biased against the guide shaft 36A side, and Fig. 8B is a reference explanatory diagram of a case where the strap 11 of the 8A belt is more biased toward the guide shaft 36A side.

9A and 9B are explanatory views of the distortion detecting unit 36 of the second embodiment.

10A and 10B are reference explanatory views of the relationship between the posture of the strap 11 and the amount of received light, and FIG. 10C is a reference explanatory diagram of the rotation of the strap 11 in the annular gap.

Fig. 11 is an explanatory diagram of the distortion detecting unit 36 of the third embodiment.

Fig. 12A is an explanatory view showing a method of connecting the tape ends 12 of the fourth embodiment, and Fig. 12B is an explanatory view of a tape supply method of two flat roll tapes 10 connected as shown in Fig. 12A.

13A to 13C are the tape ends 12 of the fourth embodiment An illustration of the connection program.

14A to 14C are explanatory views of a supply method of the belt 11 of the fourth embodiment.

Fig. 15 is an explanatory view of the tape supply device 30 of the fourth embodiment.

At least the following items can be understood based on the descriptions and drawings described below.

More specifically, the tape supply device of the present invention is characterized in that the tape supply device includes: a rotatable mounting table on which a flat roll type tape is placed, and an axis along the flat roll that is placed on the mounting table a guide ring disposed to be rotatable together with the mounting table, and a guide ring disposed to surround the guide shaft and forming an annular gap with the guide shaft, and having a light-emitting portion and a light-receiving portion for detecting a detector for positioning the tape in the annular gap and a rotating mechanism for rotating the mounting table and the guiding shaft; and the light emitting portion and the light receiving portion are configured to detect light The outer side of the shaft is disposed on the guide ring. Accordingly, the tape supply device can be seen at a glance. According to the belt feeding device, the detection accuracy of the belt can be improved.

Preferably, at least one of the upper side and the lower side of the guide ring is provided with a disk-shaped guide plate having a larger radius than the guide shaft. Thereby, the strap can be guided by the outer circumference of the guide sheet in a manner spaced apart from the guide shaft.

Preferably, the radius of the guide sheet is larger than a distance between the detection light and the center of the guide shaft. Thereby, the problem that the tape does not cross the detection light can be eliminated.

Preferably, when viewed from the axial direction, the detection lights of the two detectors intersect, and the radius of the guide plate is the intersection of the detection lights of the two detectors when viewed from the axial direction. The distance from the center of the above-mentioned guide shaft is large. Thereby, if the moving direction of the tape in the annular gap is the same, the order of the detector for shielding the detection light does not change, so that erroneous detection of the moving direction of the tape can be suppressed.

Preferably, the difference between the radius of the inner circumferential surface of the guide ring and the radius of the guide plate is smaller than the width of the tape. Thereby, it is possible to suppress the twisting of the belt in the annular gap.

Preferably, the length of the detection light passing through the gap between the guide ring and the guide sheet when viewed in the axial direction is smaller than the width of the belt. Thereby, it is possible to suppress the tape from being parallel to the detection light.

Preferably, the tape end of the outer side of the flat roll type tape which is placed on one of the first flat roll type and the second flat roll type of the mounting table and the other flat roll type tape The tape end of the inner side of the tape is arranged to be uniform and connected; the tape end of the first flat roll of the opposite side to the side connected to the second flat roll is supplied to the first A flat roll and a tape of the above second flat roll. Thereby, the length of the tape that can be supplied at one time can be increased.

Preferably, the traveling directions of the parallel detection lights of the two detectors are reversed. Thereby, the light receiving unit does not easily receive the detection light of the other detectors, and the erroneous detection can be suppressed.

Preferably, the plurality of light-emitting portions and the plurality of light-receiving portions are alternately arranged on the guide ring. Thereby, the light receiving unit does not easily receive the detection light of the other detectors, and the erroneous detection can be suppressed.

Preferably, the moving direction of the tape in the annular gap is detected based on at least three detection results of the detector. Thereby, by detecting the moving direction of the tape in the annular gap, for example, the rotation direction or the rotation speed of the mounting table can be determined.

===First Embodiment === <Belt Supply Device 30 and Twist Detection Unit 36>

Fig. 1 is an explanatory view of the strap supply device 30. The tape supply device 30 includes a tension adjusting mechanism 32, a mounting table 20, a rotating mechanism 34, a twist detecting unit 36, and a controller 38. A flat roll tape 10 is placed on the mounting table 20.

In the following description, as shown in Fig. 1, the vertical direction is defined. That is, the direction parallel to the axis of the flat roll 70 is set to "up and down direction", and the two faces of the flat roll 10 (two faces formed by the sides of the tape 11) are carried. The side of the table 20 is set to "down" and the opposite side is set to "up".

The side of the flat-wound tape 10 (the end edge in the width direction of the tape 11) is overlapped and wound into a tape. Flat roll The reel 10 includes a case where the tape 11 is wound in a flat roll on a core material having the same width as the tape width, or a wide roll of the raw material is wound on the wide core material. The obtained object is cut into a specific width and manufactured, and the like.

Here, a flat-coiled tape 10 (coreless type of flat-wound tape) of a coreless material is used. The core material may also be absent at the beginning of the manufacture of the flat roll tape 10, or may be removed from the flat roll tape 10 during use.

The tension adjusting mechanism 32 is a mechanism for adjusting the tension of the pulled-out belt 11. The tension adjusting mechanism 32 has, for example, a main roller 32A and a driven roller 32B, and a torque adjusting motor 32C that rotates the main roller 32A. The device on the downstream side of the tape supply device (the extrusion device 47 to be described later: see Fig. 7) picks up the belt 11; the tension adjusting mechanism 32 controls the torque adjustment motor 32C, and the adjustment is sent from the main roller 32A and the driven roller 32B. The tension of the belt 11.

The belt 11 is sandwiched between the main roller 32A and the driven roller 32B. By the belt 11 being sandwiched between the main roller 32A and the driven roller 32B, the twist of the belt 11 is accumulated on the upstream side of the main roller 32A and the driven roller 32B, and the twisted belt 11 can be suppressed from being supplied to the downstream side ( However, if the number of twists exceeds the allowable number of twisted rotations (details are detailed later: see Figure 4), the twisted belt 11 may be supplied to the downstream side).

The force of pulling out the belt 11 from the flat-wound tape 10 is not directly imparted by the main roller 32A, but is provided by a device on the downstream side of the main roller 32A (the extrusion device 47 to be described later: see Fig. 7). versus. The main roller 32A can function to impart back tension to the belt 11. control The controller 38 drives a tensioning device (not shown) to control the supply amount or supply speed of the belt 11, and controls the tension of the belt 11 while controlling the torque of the main roller 32A. Further, the main roller 32A can also function to guide the delivery of the belt 11.

Further, the force of pulling the self-rolling type reel 10 out of the belt 11 can be imparted by a stretching device (not shown) which is a downstream side of the main roller 32A, and is replaced by the rotational force of the main roller 32A. versus. At this time, the controller 38 controls the amount of rotation of the main roller 32A by driving the torque adjustment motor 32C, thereby controlling the supply amount or the supply speed of the belt 11.

The mounting table 20 is for mounting a flat roll 70. A guide shaft 36A is disposed in the center of the mounting table 20. The mounting table 20 is rotatably supported around the guide shaft 36A and axially above and below. When the stage 20 is rotated, the flat roll 10 will also rotate together.

The rotation mechanism 34 is a mechanism that rotates the mounting table 20 and the guide shaft 36A. When the controller 38 drives the motor of the rotating mechanism 34, the mounting table 20 (and the flat-wound tape 10) and the guide shaft 36A will rotate around the guide shaft 36A. The rotation direction of the mounting table 20 when viewed from above and the winding direction of the flat roll 70 (the winding direction of the tape 11 from the inner side of the flat roll 10) are reversed, and the rotating mechanism 34 rotates the mounting table 20. Here, the winding direction of the flat roll 10 when viewed from above is counterclockwise, and the rotation direction of the mounting table 20 viewed from above is clockwise.

The twist detecting portion 36 has a function of detecting the twist of the belt 11. The twist detecting unit 36 includes a guide shaft 36A and a guide ring 36B, and The sensor 50 for detection.

The guide shaft 36A guides the belt 11 pulled out from the inside of the flat roll 10 to the upper member. The guide shaft 36A is a round bar-shaped member that extends in the vertical direction, and is disposed so as to penetrate the hollow portion at the center of the flat-wound tape 10. In order to arrange the guide shaft 36A in this manner, the guide shaft 36A can be configured to be detachably fixed to the mounting table 20, and the guide shaft 36A can be detached beforehand when the flat roll type 10 is set on the mounting table 20. After the flat roll type tape 10 is set, the guide shaft 36A is attached and fixed to the hollow portion penetrating the center of the flat roll type tape 10.

The guide shaft 36A is located at the center of rotation of the mounting table 20 and rotates together with the mounting table 20. Since the guide shaft 36A rotates together with the mounting table 20, the wiping of the tape 11 and the guide shaft 36A can be suppressed, so that it is possible to suppress the occurrence of abrasion powder or suppress the occurrence of static electricity.

The guide shaft 36A protrudes more from the upper side than the flat roll 10 on the mounting table 20 and the mounting table 20. Here, the portion protruding from the upper side is provided with a guide ring 36B so as to surround the periphery of the guide shaft 36A. In other words, the guide shaft 36A is disposed to penetrate the hollow portion of the annular guide ring 36B.

The guide ring 36B is an annular member that restricts the movement range of the belt 11 to the inner side thereof. The guide ring 36B is disposed to surround the periphery of the guide shaft 36A, and an annular gap is formed between the guide ring 36B and the guide shaft 36A. The belt 11 pulled out from the flat roll 70 is fed by an annular gap formed between the guide shaft 36A and the guide ring 36B. The guide ring 36B is externally fixed without being rotated.

The detecting sensor 50 is a detector for detecting the belt 11 in the gap between the guiding shaft 36A and the guiding ring 36B. The detecting sensor 50 includes the light-emitting portions 51A to D and the light-receiving portions 52A to D (see FIG. 2), and is configured by an optical detector that detects the presence or absence of the tape 11 by the detection light. The detection result of the detecting sensor 50 (the light receiving signal of the light receiving unit 52) is output to the controller 38.

Fig. 2 is an explanatory diagram of the arrangement of the detecting sensor 50.

The arrangement of the distortion detecting portion 36 (the guide shaft 36A, the guide ring 36B, and the detecting sensor 50) as viewed from above is shown. Here, four detection sensors 50 are disposed on the guide ring 36B. Each of the detecting sensors 50 includes a light emitting unit 51 and a light receiving unit 52. Here, the symbols of the four detecting sensors 50 are followed by the words "A" to "D", whereby the detecting sensors 50 are distinguished, and after the symbols of the light-emitting portion 51 and the light-receiving portion 52 The same reference numerals "A" to "D" are also attached, whereby the respective light-emitting portions 51 and the respective light-receiving portions 52 are distinguished.

The light-emitting portion 51 is irradiated toward the opposite light-receiving portion 52 to detect light (for example, laser light). The light receiving unit 52 outputs a light receiving signal corresponding to the amount of light received by the detection light to the controller 38. In the figure, the detection light of the detecting sensor 50 is indicated by an arrow.

The light emitted by the light-emitting portion 51 is not only parallel light traveling straight, but may be diffused light. When the light emitted from the light-emitting portion 51 is diffused light, light that is deviated from the light-receiving portion 52 will exist. Among the light emitted from the light-emitting portion 51, the light that is deviated from the light-receiving portion 52 does not contribute to the detection, and cannot be detected light. That is, the detection light is emitted from the light-emitting portion 51 and The light that is directed in the direction of the light receiving unit 52 (light that is received by the light receiving unit 52) is not included in the detection light. Further, the detection light may be infrared light or visible light.

When the tape 11 shields the detection light, the amount of light received by the light receiving unit 52 is reduced. Therefore, the position of the band 11 in the annular gap can be detected based on the position of the light receiving portion 52 whose amount of received light is reduced to a certain threshold value or less. For example, when the light receiving unit 52A does not receive the detection light, the tape 11 is present at the position of the optical path of the detection light of the detecting sensor 50A.

When the number of the detecting sensors 50 is three or more, the tape 11 can be detected to move in the annular gap and the moving direction is also switched based on the switching of the light receiving unit 52 whose light receiving amount is reduced to a predetermined threshold or less. Can be detected. For example, when the detecting sensor 50C detects the tape 11 and the detecting sensor 50A detects the tape 11, as shown in FIG. 2, it can be considered that the tape 11 is counterclockwise when viewed from above. Move in direction.

As will be described later, the controller 38 detects the light from the detecting sensor 50 every time the tape 11 crosses the detection result of the distortion detecting unit 36 (the light receiving signal of the light receiving unit 52) (or the tape 11 each time). When the annular gap is moved for one week, the count value is increased or decreased according to the moving direction of the belt 11. This count value is information indicating the twist state of the tape 11.

According to the present embodiment, the two detecting sensors 50 are disposed such that the two parallel detecting lights sandwich the guide shaft 36A. The light-emitting portions 51 and the light-receiving portions 52 of the two detecting sensors 50 are alternately arranged such that the traveling directions of the two parallel detecting lights are reversed. As a result, even if the diffused light is emitted from the light-emitting portion 51, the light-receiving portion 52 does not easily receive the light from the light-emitting portion 51 of the other detecting sensor 50, and erroneous detection can be suppressed.

In the present embodiment, the light-emitting portion 51 and the light-receiving portion 52 of each of the four detecting sensors 50 are arranged such that the light-emitting portion 51 and the light-receiving portion 52 are alternately arranged on the guide ring 36B. With this arrangement, the light receiving unit 52 can also easily receive the light of the light emitting unit 51 of the other detecting sensor 50, so that erroneous detection can be suppressed.

When the mounting table 20 shown in Fig. 1 is fixed, when the tape 11 is pulled upward from the inner side of the flat winding tape 10, the position of the tape 11 in the annular gap of the twist detecting portion 36 is tied to the flat roll. The winding direction of the reel 10 (here, counterclockwise) moves in the same direction. For example, when the belt 11 of the one-week portion of the flat-wound tape 10 is pulled out, the belt 11 is wound around the annular gap for one week, and as a result, one twist of the belt 11 on the upstream side of the tension adjusting mechanism 32 is formed.

Next, the controller 38 increases or decreases the count value based on the detection result of the twist detecting unit 36, and controls the rotation of the mounting table 20 in response to the count value, thereby eliminating the distortion of the tape 11.

Figure 3 is a flow diagram of the processing of controller 38. The operator sets the flat-wound tape 10 on the mounting table 20, and after the tape 11 of the flat-wound tape 10 is placed in the tape supply device 30 as shown in Fig. 1, the process shown in Fig. 3 is started.

First, the controller 38 resets the count value indicating the state of the twist of the tape 11 to 0 (S001). Second, the controller 38 starts The distortion detecting unit 36 starts counting (S002).

Then, the belt 11 is pulled out from the external device (the extrusion device 47 to be described later: see Fig. 7) (S003). At this time, if the tape 11 pulled out from the flat roll 10 of the mounting table 20 is twisted, the tape 11 crosses the detection light of the detecting sensor 50, so the controller will sense based on the detection. The detection result of the device 50 increases (adds) or decreases the count value. Then, the controller 38 controls the rotation speed of the stage 20 in accordance with the count value (S004 to S008).

The feeding speed of the belt 11 (the speed at which the belt 11 is pulled out from the flat winding belt 10), if the rotation speed of the mounting table 20 is slow, the belt 11 in the annular gap of the twist detecting portion 36 will be flat and flat. The winding direction of the reel 10 (here counterclockwise: see Fig. 2) moves in the same direction. When the controller 11 moves the detection light of the detecting sensor 50 in the counterclockwise direction (direction shown in Fig. 2), the count value is increased (added).

On the other hand, when the rotation speed of the mounting table 20 is relatively fast with respect to the supply speed of the tape 11, the tape 11 in the annular gap of the twist detecting portion 36 will be opposite to the winding direction of the flat roll 70 (here clockwise) moves. When the controller 81 moves the detection light of the detecting sensor 50 in the clockwise direction, the count value is reduced (decremented).

Further, if the rotational speed of the mounting table 20 with respect to the supply speed of the belt 11 is appropriately set, the twist of the belt 11 is eliminated, and therefore the belt 11 in the annular gap of the twist detecting portion 36 does not move. Therefore, the count value does not change.

Thus, the count value will be information indicating the state of the distortion (the direction and number of distortions).

When the count value is 0, the rotation speed of the mounting table 20 with respect to the supply speed of the tape 11 is appropriately set (the state in which the twist of the tape 11 is eliminated), and the current speed is maintained (S005). When the count value is a positive value, the belt 11 moves as shown in Fig. 2, and the rotation speed of the supply speed stage 20 with respect to the belt 11 is slow, so that the controller 38 increases the rotation speed of the stage 20 ( S006). On the other hand, when the count value is a negative value, the rotation speed of the supply speed mounting table 20 with respect to the belt 11 is fast, and therefore the controller 38 decelerates the rotation speed of the mounting table 20 (S007). Thus, by the controller 38 controlling the rotational speed of the mounting table 20, the twist of the belt 11 on the upstream side by the tension adjusting mechanism 32 is eliminated.

Further, it is also acceptable that the twist of the belt 11 on the upstream side of the tension adjusting mechanism 32 is not zero. This is because a certain degree of distortion can be accumulated between the self-rolling reel 10 and the main roller 32A. The number of twists that can be accumulated on the upstream side of the tension adjusting mechanism 32 (the number of allowable twisting rotations) is increased as the distance from the flat winding web 10 to the main roller 32A (release distance) is longer.

Figure 4 is a plot showing the relationship between the release distance and the number of allowable twisted rotations. The horizontal axis is released from the flat roll 10 to the distance of the main roll 32A. The allowable twisting rotation number of the vertical axis is the number of rotations that are solved when the main roller 32A is not twisted to the upstream side. Here, A non-woven fabric having a width of 20 mm and a thickness of 0.25 mm is used. As shown in the plot, the longer the allowable number of twisted rotations is, the longer the release distance is. This tendency is constant even if the material or shape (width, thickness) of the tape 11 is changed.

If the twist of the belt 11 on the upstream side of the tension adjusting mechanism 32 is tolerable to some extent, the hysteresis of the rotation response of the mounting table 20 with respect to the detection result of the distortion of the twist detecting portion 36 can be somewhat allow. As a result, the belt 11 on the upstream side of the tension adjusting mechanism 32 is somewhat distorted. However, since the strap 11 is interposed between the main roller 32A and the driven roller 32B of the tension adjusting mechanism 32, the twisted belt 11 can be suppressed from being supplied to the downstream side of the tension adjusting mechanism 32.

In the present embodiment, the controller 38 controls the rotational speed of the mounting table 20 based on the count value, and the control target of the controller 38 is not limited to the rotational speed of the mounting table 20. For example, the controller 38 can also control the amount of rotation (rotation angle) of the stage 20 based on the count value. The count value indicates the moving direction and the moving angle (moving amount) of the belt 11 in the annular gap of the twist detecting portion 36. Therefore, for example, the controller 38 rotates the mounting table 20 at an angular share corresponding to the product of the specific angle and the count value. , the distortion of the belt 11 can be eliminated.

The controller 38 continues the processing of S004 to S007 (S008) until the supply of the belt 11 is stopped. Then, when a stop command is received from the operator or the like (YES at S008), the controller 38 will stop the rotation mechanism 34 (S009). Thereby, the supply of the tape 11 is finished, and the operation of the tape supply device 30 is finished.

<Comparative example>

Fig. 5A is an explanatory view showing the arrangement of the detecting sensor 50 of the first comparative example. In the first comparative example, the light receiving unit 52 is disposed not on the guide ring 36B but on the guide shaft 36A.

In the first comparative example, the light receiving unit 52 is required to be disposed on the rotating guide shaft 36A, and the wiring with the light receiving unit 52 is complicated. As a result, the detecting sensor 50 is easily broken. On the other hand, in the present embodiment, since the light receiving portion 52 (and the light emitting portion 51) of the detecting sensor 50 is disposed on the guide ring 36B, there is an advantage that the wiring of the detecting sensor 50 is easy.

Fig. 5B is an explanatory view showing the arrangement of the detecting sensor 50 of the second comparative example. In the second comparative example, the light-emitting portion 51 and the light-receiving portion 52 of the detecting sensor 50 are not disposed on the guide shaft 36A but are fixed from the outside (for example, the guide ring 36B). In the second comparative example, since the light-emitting portion 51 irradiates the guide shaft 36A to detect light, the detection light is reflected by the guide shaft 36A, and the light-receiving portion 52 receives the reflected light. When the tape 11 shields the detection light, the amount of light received by the light receiving unit 52 is reduced, so that the position of the tape 11 can be detected by this point.

In the second comparative example, since the detection light must be irradiated to the rotating guide shaft 36A, if the guide shaft 36A vibrates during the rotation, the optical path of the reflected light will be deviated, and the detecting sensor 50 may be erroneously detected. On the other hand, in the present embodiment, since the detection light is directly transmitted from the light-emitting portion 51 to the light-receiving portion 52 through the outside of the guide shaft 36A, the guide shaft 36A is not reflected by the guide shaft 36A, and even if the guide shaft 36A vibrates during rotation, No error check After the measurement, the detection accuracy of the tape can be improved.

<Method of Manufacturing Optical Cable 1 (Method of Using Tape Supply Device 30)>

Fig. 6 is a cross-sectional view of the optical cable 1 having the strap 11. Fig. 7 is a flow chart showing a manufacturing apparatus 40 of the optical cable 1 using the tape supply device 30.

The optical cable 1 has three optical fiber units 2, a bundled winding tape 11, and an outer coating layer 7. The binding winding tape 11 is a tape 11 supplied from the above-described flat winding tape 10.

The optical fiber unit 2 is a unit in which five four-core optical fiber ribbons 3 are wound by the identification line 4 to be unitized. The identification line 4 is a colored line having a width of 2 mm and a thickness of 0.1 mm. By making the identification colors of the three fiber units 2 different, the operator can identify each fiber unit 2. As shown in Fig. 7, the five four-core optical fiber ribbons 3 respectively supplied from the bobbin 43 are spirally wound by the operation device 44, and five four-core optical fibers are taken by the identification line 4. 3 bundles are formed to form the fiber unit 2. The three fiber units 2 are SZ-type twisted by reversing each rotation of the twisting direction by the SZ splitter disk 42. The three fiber units 2 that are coupled together are supplied to the belt former 41.

The bundling tape 11 covers the components of the three fiber units 2. In the optical cable 1, the binding winding tape 11 is formed in a spiral shape, and has a superposed structure in which both end portions in the width direction overlap. The binding winding tape 11 is supplied from the tape supply device 30 to the tape former 41. In the tape former 41, together with the binding winding tape 11, three optical fiber units 2 are also supplied, and the tape former 41 encloses three lights on one side with the binding winding tape 11. The fiber unit 2 has a bundled winding tape 11 formed in a spiral shape on one side. An extrusion device 47 is disposed on the downstream side of the belt former 41.

The tying winding tape 11 is constituted, for example, by a thermoplastic tape which is shaped and held by heating. Specifically, the bundling tape 11 may be a polyimide tape, a polyester tape, a polypropylene tape, a polyethylene tape, or the like. Further, as the binding and winding tape 11, a non-woven fabric can also be used. In this case, the nonwoven fabric may be formed by forming a polyimide, a polyester, a polypropylene, a polyethylene, or the like into a belt shape. Further, the non-woven fabric may be formed by adhering or applying a water absorbing powder or the like, or by subjecting it to surface processing. The bundling tape 11 may be formed by attaching a film such as a polyester film to a nonwoven fabric. The binding winding tape 11 is formed such that even if it is heated, the optical fiber ribbon 3 on the inner side or the outer coating layer 7 on the outer side is not followed. This is to facilitate the removal of the optical fiber ribbon 3 (or the optical fiber core wire) from the optical cable 1 at the time of the core wire exposure operation at the end portion of the optical cable 1 or during the intermediate operation.

The outer covering layer 7 is a member that covers the optical fiber unit 2 and the bundled winding tape 11 so as to be housed therein. The outer covering layer 7 is provided with a tensile body 5 and a tearing cord 6. The tensile body 5 is capable of resisting shrinkage of the outer covering layer 7, thereby suppressing strain applied to the optical cable 1 due to shrinkage of the outer covering layer 7, or bending. The anti-tension body 5 is provided inside the outer covering layer 7 so as to sandwich the winding tape 11. The tearing cord 6 is a member used for tearing the optical cable 1 in the longitudinal direction when the optical cable 1 is branched. The pair of tearing cords 6 are arranged so as to sandwich the wrapping tape 11 on a line orthogonal to the line connecting the opposing tensioning bodies 5 Inside the outer coating layer 7.

The extrusion device 47 is supplied with three optical fiber units 2, which are twisted by an SZ type, a bundled winding tape 11, two tensile members 5, and two tearing cords 6. The extrusion device 47 releases the tension-resistant body 5 and the tear cord 6 from the respective supply sources, and causes the bundled winding tapes 11 accommodating the three optical fiber units 2 to advance, and the coating layer is coated around the bundled winding tape 11 7. Thereby, the 60-core optical cable 1 shown in Fig. 6 was produced. The manufactured optical cable 1 is wound around a reel 48.

===Second Embodiment ===

Fig. 8A is a reference explanatory view showing a state in which the strap 11 is biased on the side of the guide shaft 36A. The band 11 shown in Fig. 2 is located on the outer side of the intersection of the two orthogonal detection lights, but the band 11 shown in Fig. 8A is located on the inner side of the intersection of the two orthogonal detection lights (biased Guide shaft 36A). As a result, the direction of movement of the belt 11 in Fig. 8A is opposite to that in Fig. 2, but the tape 11 blocks the detection sensor 50 of the detection light (the detection light in the figure is blocked by the detection) The sensor 50A is the same as the detection sensor 50C) in which the detection light is blocked, and FIG. 8A is the same as FIG. As a result, the direction of rotation of the belt 11 is erroneously detected, and there is an increase or decrease in the count value of the error.

Fig. 8B is a reference explanatory view showing a case where the belt 11 is further biased toward the side of the guide shaft 36A as compared with Fig. 8A. In the case where the belt 11 is biased toward the side of the guide shaft 36A (the case where the belt 11 moves between the detection light and the guide shaft 36A), the belt 11 does not cross the detection light. Therefore, the sensor 50 for detection may have a problem that the tape 11 cannot be detected.

In the second embodiment, the guide sheets 36A are provided with guide sheets so that the belts 11 do not excessively deviate from the guide shafts 36A.

9A and 9B are explanatory views of the distortion detecting unit 36 of the second embodiment. Fig. 9A is a view of the distortion detecting portion 36 viewed from above, and Fig. 9B is a view of the distortion detecting portion 36 from the lateral direction. In addition, in FIG. 9A, the positional relationship between the detection light and the guide sheets (the upper guide sheets 54 and the lower guide sheets 55) is shown as being transmitted through the upper guide sheets 54.

As shown in FIG. 9B, the distortion detecting unit 36 of the second embodiment includes an upper guide plate 54 and a lower guide plate 55. The upper guide plate 54 is a disk-shaped member that is provided on the upper side of the guide ring 36B, and guides the members of the belt 11 at the outer peripheral edge. The lower guide sheet 55 is a disk-shaped member provided on the lower side of the guide ring 36B, and guides the members of the belt 11 at the outer peripheral edge. The upper guide plate 54 and the lower guide plate 55 are both fixed to the guide shaft 36A.

As shown in FIG. 9A, the guide ring 36B is disposed to surround the outer periphery of the upper guide plate 54 and the lower guide plate 55 as viewed from above. In other words, the outer diameters of the upper guide plate 54 and the lower guide plate 55 are smaller than the inner diameter of the guide ring 36B. Therefore, an annular gap is formed between the guide ring 36B and the outer peripheral edge of the upper guide plate 54 and the lower guide plate 55 as viewed from above. Through this annular gap, the belt 11 pulled out from the flat roll 10 is fed.

As shown in FIGS. 9A and 9B, the radius L2 of the upper guide plate 54 and the lower guide plate 55 (the distance between the outer peripheral edge and the central axis of the guide shaft 36A) is larger than the radius of the guide shaft 36A. Therefore, the belt 11 The outer peripheral edge of the upper guide plate 54 and the lower guide plate 55 are guided so as to be spaced apart from the guide shaft 36A. As a result, the problem that the belt 11 is biased against the guide shaft 36A (Figs. 8A and 8B) is less likely to occur.

Further, as shown in Figs. 9A and 9B, the radius L2 of the upper guide plate 54 and the lower guide plate 55 (the distance between the outer peripheral edge and the central axis of the guide shaft 36A) is the center of the detection light and the guide shaft 36A. The distance L1 (shortest distance) of the shaft is large. Therefore, as shown in Fig. 9A, one portion of the light path of the detection light passes above or below the upper side guide plate 54 and the lower side guide plate 55. In other words, as shown in Fig. 9A, one portion of the light path of the detection light is located inside from the outer periphery of the upper guide plate 54 and the lower guide plate 55 as viewed from above. Therefore, the tape 11 guided by the outer periphery of the upper side guide plate 54 and the lower side guide plate 55 can be eliminated from the guide shaft 36A, so that the tape 11 as shown in Fig. 8B does not cross the problem of detecting light.

Further, as shown in FIG. 9A, the radius L2 of the upper guide plate 54 and the lower guide plate 55 (the distance between the outer peripheral edge and the central axis of the guide shaft 36A) is two orthogonal detection lights when viewed from above. The distance between the intersection point and the central axis of the guide shaft 36A is large. In other words, as shown in Fig. 9A, when viewed from above, the outer peripheral edges of the upper guide plate 54 and the lower guide plate 55 are separated from the guide shaft 36A by the intersection of the two orthogonal detection lights. In other words, as shown in Fig. 9A, when viewed from above, the intersection of the two orthogonal detection lights is located further inside than the outer periphery of the upper guide plate 54 and the lower guide plate 55. That is, the intersection of the two orthogonal detection lights is located above or below the upper side guide plate 54 and the lower side guide plate 55. With this, The belt 11 guided by the outer peripheral edge of the upper side guide plate 54 and the lower side guide plate 55 is often located outside the intersection of the two orthogonal detection lights, so if the moving direction of the belt 11 in the annular gap is the same, the detection is performed. Since the order of the sensors 50 for detecting the light is not changed, the erroneous detection of the moving direction of the tape 11 can be suppressed.

Further, when viewed from above, the positions of the two orthogonal detection lights in the vertical direction may be different. For example, the detecting sensor 50A is disposed on the upper side of the guide ring 36B, and the detecting sensor 50C is disposed on the lower side of the guiding ring 36B, whereby the two detecting lights can be prevented from actually intersecting. However, in this case as well, the two detection light systems intersect when viewed from above, and as shown in FIG. 9A, the radius L2 of the upper side guide plate 54 and the lower side guide plate 55 (the outer circumference and the central axis of the guide shaft 36A) The distance between the two detection lights which are preferably orthogonal to each other when viewed from above is larger than the central axis of the guide shaft 36A. Thereby, erroneous detection of the moving direction of the belt 11 can be suppressed.

Further, in the present embodiment, the guide sheets (the upper guide sheets 54 and the lower guide sheets 55) are disposed on both the upper side and the lower side of the guide ring 36B. However, the guide sheets may be arranged only on either the upper side or the lower side. board. However, if the guide sheets are disposed on both the upper side and the lower side of the guide ring 36B, the belts 11 in the annular gap are surely separated from the guide shaft 36A, which is advantageous.

===3rd embodiment ===

Fig. 10A and Fig. 10B are diagrams for explaining the relationship between the posture of the strap 11 and the amount of received light. If the face of the belt 11 shown in Fig. 10A is shielded In the light, the amount of light received by the light receiving unit 52 is greatly reduced. Therefore, the detecting sensor 50 can detect the tape 11 based on the change in the light receiving signal of the light receiving unit 52. However, as shown in FIG. 10B, when the tape 11 is parallel to the detection light, the amount of light received by the light receiving unit 52 hardly changes, and therefore the sensor 50 for detection may not detect the tape 11. Therefore, the posture of the belt 11 in the annular gap is preferably not parallel to the detection light.

Fig. 10C is a reference explanatory diagram of the rotation of the belt 11 in the annular gap. If the width G of the annular gap is too wide, the belt 11 may rotate in the annular gap to cause the belt 11 to be twisted. Since the distortion caused by the rotation of the belt 11 cannot be detected by the detecting sensor 50, the belt 11 in the annular gap preferably does not rotate.

Therefore, in the third embodiment, the width of the annular gap is narrowed, and the belt 11 is prevented from being parallel to the detection light or the belt 11 is rotated in the annular gap.

Fig. 11 is an explanatory diagram of the distortion detecting unit 36 of the third embodiment. The same figure is a view of the distortion detecting unit 36 viewed from above, and is shown by the upper guide plate 54 in order to show the positional relationship between the detection light and the guide sheet. The twist detecting unit 36 of the third embodiment has substantially the same configuration as the twist detecting unit 36 of the second embodiment. In the second embodiment, the outer diameters of the upper side guide plate 54 and the lower side guide plate 55 are larger than those of the upper side guide plate 54 and the lower side guide plate 55 of the third embodiment, and the annular gap of the third embodiment (guide) The width G1 of the gap between the ring 36B and the outer peripheral edge of the upper guide plate 54 and the lower guide plate 55 is narrower than that of the second embodiment.

In the third embodiment, the width G1 of the annular gap is set to be smaller than the width W of the belt 11. In other words, the difference G1 between the radius of the inner circumferential surface of the guide ring 36B and the radius of the upper guide plate 54 (or the lower guide plate 55) is set to be smaller than the width W of the tape 11. As a result, according to the third embodiment, it is possible to suppress the twist of the strap 11 caused by the rotation of the strap 11 in the annular gap.

Further, in the third embodiment, the length G2 of the detection light passing over the annular gap is also set to be smaller than the width W of the tape 11. In other words, the length G2 of the annular gap at the position of the detection light when viewed from above is set to be smaller than the width W of the tape 11. Thereby, the posture of the belt 11 can be suppressed from being parallel to the detection light.

=== Fourth embodiment ===

The flat roll tape 10 is generally shorter than the tape length of the tape by a transversely movable tape. Therefore, when the flat-wound tape 10 is used, the efficiency of the production line can be lowered if the tape is temporarily stopped and the new flat-wound tape 10 is attached every time the tape 11 is used up.

In the fourth embodiment, the length of the tape that can be supplied at one time is increased by connecting the tape ends of the plurality of flat-wound tapes 10 in advance.

Fig. 12A is an explanatory view showing a method of connecting the tape ends 12 of the fourth embodiment. Here, the mounting table 20 of the flat roll 70 is not considered. In the following description, the symbol of the upper flat roll type 10 may be additionally marked with the word "A", and the lower side flat roll type 10 has the symbol The word "B" is attached to the label.

Further, in the following description, when viewed from the axis of the flat roll 70, the far side is referred to as "outside", and the opposite side is referred to as "inside". Further, the surface on the outer side of the belt 11 is referred to as "table" or "surface", and the inner side of the belt 11 is referred to as "inside" or "inside". In the figure, the inside of the belt 11 is shaded.

Two flat roll belts 10 are arranged in the upper and lower. In the upper flat roll type tape 10A, the outer tape end 12A is pulled out. In the lower flat roll type tape 10B, the inner tape end 12B is pulled out. Moreover, the pulled-out belts 11 are all without distortion, so that the belts 11 are uniformly connected to each other with their belt ends 12 in the front and back. That is, the upper edge of the tape end 12A of the upper flat roll type tape 10A is combined with the upper edge of the tape end 12B of the lower side flat roll type tape 10B, and the tape end 12A of the upper side flat roll type tape 10A is made. The lower edge is fitted to the lower edge of the belt end 12B of the lower flat roll belt 10B so that the belt ends 12 of each other are joined.

Further, as the connection of the tape end 12, a connection method such as heat welding, pressure bonding, followed by ultrasonic bonding, sewing, or the like can be used. Here, the strap ends 12 are directly connected to each other, but the strap ends 12 may be indirectly connected to each other via a relay such as a short type of relay strap.

Fig. 12B is an explanatory view showing a tape supply method of two flat roll tapes 10 connected as shown in Fig. 12A.

After the two flat-wound tapes 10 are joined, the tape end 12A on the inner side of the upper flat-wound tape 10A (the tape end 12A on the opposite side to the side on which the lower-side roll-to-roll tape 10B is joined) faces upward. Pull out, can be rolled from the upper side The inner side of the belt 10A is supplied with the belt 11A. Then, if the upper flat roll type tape 10A is used up, the tape end 12B on the inner side of the lower flat roll type tape 10B (the tape end 12B connected to the upper side flat roll type tape 10A) is pulled upward, and The tape 11B is supplied from the inner side of the lower flat roll type tape 10B.

In this manner, by previously connecting the tape ends 12 of the two flat roll tapes 10 to each other, the tape 11B can be continuously supplied from the lower flat roll tape 10B even after the upper flat roll tape 10A is used up. Thereby, the tape 11 can be directly supplied from the flat roll 10 with the increase in the length of the tape that can be supplied at one time.

13A to 13C are explanatory views of the connection procedure of the tape end 12 of the fourth embodiment.

First, the operator mounts the flat roll type tape 10B on the lower side mounting table 20B as shown in Fig. 13A. Then, the operator pulls the tape end 12B from the inside of the flat roll 10B as shown in Fig. 13A, and passes the tape end 12B through the opening 21 of the upper stage 20A. At this time, it is preferable that the operator arranges the belt 11B so that the surface of the belt 11B that has passed through the opening portion 21 is parallel to the surface of the mounting table 20A. Thereby, the operation of placing the other flat-wound tape 10A so as to sandwich the belt 11B (second work: see Fig. 13B) will become easy.

Next, the operator mounts another flat roll type tape 10A on the upper stage 20A as shown in Fig. 13B. At this time, as shown in FIG. 13B, the operator exposes the tape end 12B of the lower flat roll type tape 10B to the outside from the lower side of the upper flat roll type tape 10A, and sandwiches the lower side flat roll. Tape 10B belt 11B will be flat roll tape 10A It is placed on the upper stage 20A.

Then, as shown in Fig. 13C, the operator exposes the outer tape end 12A of the upper flat roll type tape 10A and the lower side of the self-flat roll type tape 10A to the outer tape end 12B (lower side flat roll) The tape ends 12B) on the inner side of the tape 10B are such that the tapes 11 are aligned and connected. Thereby, the connection work of the tape end 12 is finished.

In the above description, the connection of the two flat-wound tapes 10 is as described above. However, three or more flat-wound tapes 10 may be disposed above and below, and the upper and lower adjacent flat-wound tapes 10 are the same as described above. Way to connect. In this case, the operator performs the connection operation of the tape end 12 in order from the flat roll tape 10 placed on the lower side mounting table 20.

14A to 14C are explanatory views of a supply method of the belt 11 of the fourth embodiment.

After the joining operation of the two flat-rolled reels 10 (see Fig. 13C), as shown in Fig. 14A, by the inner side of the upper side of the flat-wound tape 10A, the tape end 12A (with the lower side of the roll-up roll) The belt end 12A) on the opposite side of the belt 10B is pulled upward, and the belt 11A can be supplied from the inside of the upper flat belt 10A.

The upper flat roll type reel 10A is placed on the upper side stage 20A with the tape 11B interposed therebetween (see Fig. 14A). However, if the belt 11A of the upper flat roll type tape 10A is continuously supplied, as shown in Fig. 14B, the upper side flat roll type tape 10A will be used up, so that the tape 11B sandwiched by the lower side of the upper side flat roll type tape 10A is used. It has also become a state of supply.

If the upper flat roll type tape 10A is used up, the tape end 12B on the inner side of the lower flat roll type tape 10B (the tape end 12B connected to the upper side flat roll type tape 10A) will be pulled upward, and The inner side of the side flat roll tape 10B is supplied with the tape 11B.

At this time, as shown in Fig. 14C, the belt 11B of the lower flat winding belt 10B is supplied through the inner side (opening 21) of the upper stage 20A without passing through the outer side of the upper stage 20A. Therefore, according to this supply method, as shown by the broken line in the figure, the support member 22 is disposed on the outer side of the flat-wound tape 10, and the upper-side stage 20A can be supported by the lower-side stage 20B.

Fig. 15 is an explanatory view of the tape supply device 30 of the fourth embodiment. In the same manner as the first embodiment, the controller 38 of the fourth embodiment increases or decreases the count value in response to the detection result of the detecting sensor 50 of the twist detecting unit 36, and controls the rotational speed of the mounting table 20 based on the count value.

In the fourth embodiment, the three mounting stages 20 are arranged side by side in the vertical direction. An opening 21 is formed in the center of the mounting table 20 (not shown in Fig. 15, see Fig. 13A, Fig. 14B, and Fig. 14C). However, the opening portion 21 may not be provided in the lowermost mounting table 20. The mounting table 20 that is placed side by side is integrally coupled by the support members 22 provided between the mounting stages 20.

A flat roll tape 10 is placed on each of the mounting tables 20. If the two flat-rolled tapes 10 are placed side by side in the three flat-rolling tapes 10, the same as the 13A to 13C, the upper flat roll can be known. The tape end 12 of the outer side of the belt 10 and the belt end 12 of the inner side of the lower flat roll 10 are connected in a manner consistent with the surface of the belt 11. Thereby, the belt 11 of the three-volume flat roll 10 can be supplied at a time.

===Other ===

The above-described embodiments are intended to be illustrative, and are not intended to limit the scope of the invention. It is to be understood that the invention may be modified and modified without departing from the scope of the invention, and the invention includes equivalents thereof.

<About tape supply device>

The above-described tape supply device supplies the bundled winding tape 11 for manufacturing the optical cable 1. However, the tape supply device can also be used for other purposes. For example, the tape supply device can be used for supplying a packaging tape for packaging a package, and can also be used for supplying a tape-shaped wafer type electronic component storage table paper for manufacturing a wafer component.

<About the sensor 50 for detection>

In the above-described embodiment, the light-emitting portions 51A to D and the light-receiving portions 52A to D of the two detecting sensors 50 are arranged in a reverse direction so that the traveling directions of the two parallel detecting lights are reversed (see the 2)), but the direction of travel of the two parallel detection lights may be the same direction. However, in this case, when the light-emitting portions 51A to D are irradiated with the diffused light, the light-receiving portions 52A to D of one of the detecting sensors 50 receive the detection light of the other detecting sensor 50. .

Further, in the above-described embodiment, the plurality of light-emitting portions 51A to D and the plurality of light-receiving portions 52A to D are alternately arranged on the guide ring 36B (see FIG. 2), and the light-receiving portions 52A to D may be arranged adjacent to each other. However, in this case, when the light-emitting portions 51A to D are irradiated with the diffused light, one of the adjacent two light-receiving portions 52A to D may receive the other detection light.

Further, in the above-described embodiment, since the detection sensor 50 is three or more, the movement direction of the belt 11 in the annular gap can be changed according to the switching of the light receiving unit 52 whose light receiving amount is reduced to a predetermined threshold or less. Tested. However, if the moving direction of the tape 11 is not detected (for example, the twisting direction of the tape is known), the detecting sensor 50 may be one or two.

11‧‧‧带带

36‧‧‧Twist detection department

36A‧‧‧Guidance axis

36B‧‧‧ Guide ring

50A, 50B, 50C, 50D‧‧‧Detector sensors

52A‧‧‧Receiving Department

Claims (9)

A tape supply device comprising: a rotatable mounting table on which a flat roll is placed, disposed along an axial direction of the flat roll wound placed on the mounting table, and a guide ring that rotates together with the guide shaft, and a guide ring that is disposed to surround the guide shaft and forms an annular gap with the guide shaft, and has a light-emitting portion and a light-receiving portion for detecting from the flat roll a detector for pulling out the position of the belt in the annular gap, and a rotation mechanism for rotating the mounting table and the guide shaft; and the light-emitting portion and the light-receiving portion are configured such that the detection light is outside the guide shaft The guide ring is disposed on the guide ring to detect a moving direction of the tape in the annular gap based on at least three detection results of the detector. The tape supply device according to claim 1, wherein at least one of the upper side and the lower side of the guide ring is provided with a disk-shaped guide plate having a larger radius than the guide axis. A tape feeding device according to claim 2, wherein a radius of the guide plate is larger than a distance between the detection light and a center of the guide shaft. The tape feeding device of claim 3, wherein the detecting light of the two detectors is crossed when viewed from the axial direction; The radius of the guide sheet is larger than the distance between the intersection of the detection light of the two detectors when viewed from the axial direction and the center of the guide shaft. The tape feeding device according to any one of claims 2 to 4, wherein a difference between a radius of an inner circumferential surface of the guide ring and a radius of the guide plate is smaller than a width of the tape. The tape supply device of claim 5, wherein the length of the detection light passing through the gap between the guide ring and the guide plate is smaller than the width of the tape when viewed from the axial direction. The tape feeding device according to any one of claims 1 to 4, wherein the flat winding tape of one of the first flat roll and the second flat roll carried on the mounting table The outer side of the tape end and the inner side of the other flat roll of the tape are arranged in the same direction and connected; the above-mentioned side opposite to the side connected to the second flat roll A tape end of a flat roll type tape is supplied to the first flat roll type tape and the second flat roll type tape. The tape supply device according to any one of claims 1 to 4, wherein the traveling direction of the parallel detection light of the two of the detectors is reversed. The tape supply device according to any one of claims 1 to 4, wherein the plurality of light-emitting portions and the plurality of light-receiving portions are alternately arranged on the guide ring.