JP4855951B2 - Tape cutting mechanism, tape winding device including the same, and tape winding method - Google Patents

Description

  The present invention relates to a tape cutting mechanism that cuts a tape to a required length in order to wind the tape around a bound object such as an electric wire, a tape winding device including the tape cutting mechanism, and a tape winding method.

  Fig.6 (a) shows the form of the conventional tape cutting mechanism and a tape winding apparatus provided with the same (refer patent document 1).

  The tape cutting mechanism 65 includes a long plate-like movable cutter 59, an arm 64 to which the cutter 59 is fixed, a driving means (not shown) for moving the arm 64 forward and backward together with the cutter 59, and a position facing the cutter 59. And a fixed-side cutter guide 60 arranged at the center.

  The adhesive tape 54 is supplied to the rotating drum 57 side by the tape feeding mechanism 51 through the space between the cutter 59 retracted by the driving means and the fixed-side cutter guide 60.

  The tape feeding mechanism 51 includes a pair of feeding rollers 52, a drive gear 53 that rotates the pair of feeding rollers 52 in the same direction, a guide roller 55 that contacts the one feeding roller 52 and guides the adhesive tape 54, and both feedings. A tape pressing plate 56 that is in contact with the roller 52 and slidably contacts the adhesive tape 54 is formed.

  A movable cutter 59 and a fixed cutter guide 60 are disposed between the tape feeding mechanism 51 and the rotary drum 57. The adhesive tape 54 is formed of a synthetic resin material and is wound in a roll shape so that the inner surface (adhesive surface) of the outer tape is in close contact with the outer surface (non-adhesive surface) of the inner tape.

  The tape winding device 50 includes the tape cutting mechanism 65, the tape feeding mechanism 51, a rotating drum 57 that supplies the adhesive tape 54 from the tape feeding mechanism 51, and a pair of gears 58 that drive the rotating drum 57. It is.

  As shown in FIG. 6B, the rotary drum 57 has a notch 61 in the radial direction, and a brush 62 for holding an electric wire is opposed to the notch 61.

The end of the adhesive tape 54 is supplied to the opening 61a of the notch 61, and a plurality of electric wires 63 are inserted into the notch 61 together with the tape 54 while being in contact with the adhesive surface of the adhesive tape 54, and the limit switch detects it. Then, the cutter 59 is driven to cut the adhesive tape 54, and the rotary drum 57 is rotated by a motor or a rack and pinion (not shown) via the drive gear 58, so that the friction of the brush 62 on the outer periphery of the plurality of electric wires 64. The adhesive tape 54 is wound by force.
JP-A-9-183413 (FIG. 6)

  However, in the conventional tape cutting mechanism 65, the cutter 59 enters the tape thickness direction substantially perpendicular to the surface (adhesive surface) of the adhesive tape 54 that moves straight along the tape pressing plate 56. For this reason, there is a concern that the cutting property is poor with respect to a highly extensible adhesive tape or a thick adhesive tape. In addition, since the cut end side of the adhesive tape 54 becomes free between the cutter 59 and the rotary drum 57 after the adhesive tape 54 is cut, the cut end side of the adhesive tape 54 tends to adhere to other parts of the apparatus, In that case, there was a concern that tape winding would not be performed cleanly.

  These concerns may be caused by using a corrugated tube (harness protection tube) covering the electric wire 63 instead of the electric wire 63, a wire body other than the electric wire, or the like, or a non-adhesive property instead of the adhesive tape 54. This can occur in the same manner even when the objects to be bound are bound using the above tape. Hereinafter, the term “tape” includes both adhesive and non-adhesive materials.

  The present invention is a tape that can be cut smoothly and reliably even when a highly extensible tape or a thick tape is used, and the tape can be wound neatly and surely around a bound body such as an electric wire. An object is to provide a cutting mechanism, a tape winding device including the cutting mechanism, and a tape winding method.

  In order to achieve the above object, a tape cutting mechanism according to claim 1 of the present invention includes a rotary drum having a notch for inserting a bundled body together with the tape, and a blade disposed close to the outer periphery of the rotary drum. And an arc-shaped cutting band that rotates the outer periphery of the rotary drum toward the blade part, and the tape is sheared by the cutting band and the blade part.

  According to the above configuration, the tape and the bundled body are inserted into the cutout portion of the rotating drum through the space between the tip of the cutting band and the blade, and the cutting band rotates along the outer periphery of the rotating drum. For example, the tape is sheared in the tangential direction of the arcuate cutting band by the blade portion on the fixed side by pressing down the tape pressing portion at the tip. Also, since the cutting band covers the opening of the notch portion of the rotating drum at the same time after the tape is cut, the cut tape is routed along the rotating drum inside the cutting band, and the adhesive surface of the tape adheres to the outside. There is nothing. Moreover, you may provide a blade part (movable blade) in a tape pushing part. In this case, it is good also as a pushing part, without providing the blade part of a fixed side.

  A tape cutting mechanism according to a second aspect is the tape cutting mechanism according to the first aspect, wherein the blade portion is formed in an annular band having a notch opening communicating with the notch portion.

  With the above-described configuration, the rotating drum rotates along the inner surface of the arc-shaped annular belt, and the tape is routed along the outer surface of the rotating drum and the inner surface of the annular belt. The part and the cutting band are sheared in the tangential direction.

  A tape cutting mechanism according to a third aspect is the tape cutting mechanism according to the first or second aspect, wherein the blade portion rotates toward the cutting band.

  With the above configuration, the cutting band and the blade part (the annular band having the blade part) are rotated in the opposite directions in the direction of approaching each other, and the tape is reliably sheared at a high speed.

  A tape cutting mechanism according to a fourth aspect of the present invention is the tape cutting mechanism according to any one of the first to third aspects, further comprising a lock unit that fixes the tape in the vicinity of the rotating drum. The shearing is performed in a state where is fixed.

  With the above configuration, the tape lock by the lock unit is released when the tape is supplied to the rotating drum, and the tape is locked (fixed) by the lock unit when the tape is cut. When the tape is sheared between the cutting band and the blade portion, the range in which the tape can be stretched or pulled out due to slack is limited to be short between the blade portion and the locking means. Examples of the locking means include clamping with a cam and a fixed roller, clamping with an air cylinder and a fixed plate, and the like.

  A tape cutting mechanism according to a fifth aspect is the tape cutting mechanism according to the fourth aspect, wherein the locking means is locked and unlocked in conjunction with the rotation of the cutting band.

  With the above configuration, the tape is cut when the tape is pulled out at the tip or the blade portion of the cutting band. When the tape is cut, the tape is locked by the locking means, and the tape is surely cut without stretching between the cutting band and the blade portion. The cutting band and the locking means can be linked compactly with a gear mechanism or the like.

  The tape cutting mechanism according to claim 6 is the tape cutting mechanism according to any one of claims 1 to 5, wherein an elastic member that presses and fixes the tape along the outer surface of the cutting band to the outer surface is provided on the blade portion side. Provided, and the shearing is performed in a fixed state of the tape.

  With the above configuration, the tape is locked in the immediate vicinity of the blade portion, and the cutting of the tape by the blade portion and the cutting band is surely performed with an accurate length without elongation or slack displacement. If the tape lock by the elastic member and the tape lock by the lock means according to the fourth aspect are performed simultaneously, the synergistic effect prevents the tape from extending and slacking more reliably, and the tape cutting performance is enhanced. Further, the cutting band is pushed toward the blade part by the elastic member, so that the cutting band and the blade part are contacted at the time of shearing, and the tape cutting property is improved.

  The tape cutting mechanism according to a seventh aspect is the tape cutting mechanism according to any one of the first to sixth aspects, wherein a front end side portion of the cutting band escapes to the outside of the blade portion, and is on a base side of the front end side portion. The blade portion is pressed to cut the tape.

  With the above configuration, when the cutting band is rotated in the tape cutting direction toward the blade part, the tip side portion of the cutting band escapes outside without interfering with the blade part, and the tape follows the tip side part of the cutting band. Then, it is folded back into a substantially U shape and extended, and at that time, the blade portion is pressed against the base side of the tip side portion and the tape is sheared. The winding length on the tape end side at the beginning of the next tape winding is increased by the amount of the tape extension.

  A tape winding device provided with the tape cutting mechanism according to claim 8 comprises the tape cutting mechanism according to any one of claims 1 to 7, and the tape cut by the cutting band and the blade portion of the rotating drum. It is characterized by being wound around the bound body by a rotating operation.

  With the above-described configuration, the tape is reliably and neatly wound around the bound body such as an electric wire without slack or shortage due to the operational effect according to any one of claims 1 to 7.

  A tape winding method according to a ninth aspect uses the tape cutting mechanism according to any one of the first to seventh aspects, cuts the tape with the cutting band and the blade portion, and uses the cut tape for the rotating drum. It is characterized by being wound around the bound body by a rotating operation.

  With the above-described configuration, the tape is reliably and neatly wound around the bound body such as an electric wire without slack or shortage due to the operational effect according to any one of claims 1 to 7.

  According to the first aspect of the present invention, the tape is sheared in the tangential direction of the cutting band between the rotating arc-shaped cutting band and the fixed blade portion, so that the elongation of the tape is suppressed as much as possible and is thick. Even tape can be cut. In addition, since the cut tape is located inside the cutting band, the adhesive surface of the tape does not adhere to the outside, and the tape can be wound neatly and securely around a bound body such as an electric wire.

  According to the second aspect of the present invention, by shearing the tape in the tangential direction between the arc-shaped cutting band and the arc-shaped annular band, even an easily stretchable tape or a thick tape can be surely cut.

  According to the invention of claim 3, by cutting the tape at a high speed with a cutting band rotating in the opposite direction and an annular band having a blade part or a blade part, a tape that is easy to stretch, a thick tape, or a high adhesive property Even tape can be cut smoothly and reliably.

  According to the invention of claim 4, by fixing the tape near the rotating drum, the elongation and slack displacement of the tape at the time of cutting the tape can be suppressed as small as possible. It can be carried out.

  According to the fifth aspect of the present invention, when the tape is cut by rotating the cutting band in the cutting direction, the tape is locked by the locking means in conjunction with the cutting band, so that the tape can be locked in a timely manner when necessary. Thus, the elongation and slack displacement of the tape at the time of cutting the tape are surely suppressed.

  According to the sixth aspect of the present invention, by fixing the tape in the immediate vicinity of the blade portion, it is possible to surely prevent the tape from being stretched or slackened when cutting the tape. be able to. Moreover, a cutting | disconnection is performed more reliably because an elastic member presses a cutting band on the blade part side.

  According to the seventh aspect of the present invention, the tape can be extended along the tip side portion of the cutting band to increase the length of the hanging portion of the tape. At the beginning of winding on the part side, the sticking property between the tapes is improved, and the tape winding is performed securely and reliably.

  According to the invention of claim 8, the effect described in any of claims 1 to 7, the tape can be reliably and neatly wound around the bound body such as an electric wire without being loose or short. The value of products such as wire harnesses will increase.

  According to the ninth aspect of the invention, the effect described in any of the first to seventh aspects enables the tape to be securely and neatly wound without being loosened or short of the tape around the bound object such as an electric wire, The value of products such as wire harnesses will increase.

  1 (a) and 1 (b) show an embodiment of a tape winding apparatus and a tape winding method provided with a tape cutting mechanism according to the present invention, and FIGS. 2 to 4 show an embodiment of the tape cutting mechanism, respectively. Is.

  As shown in FIGS. 1A and 1B, the tape winding device 1 includes a tape winding portion 3 including a tape cutting mechanism 21 on the front side of the case 2, and a tape feeding mechanism 5 on the rear side of the case 2. 2 is provided with a drive unit 4 for operating the tape winding unit 3 including the tape cutting mechanism 21 and the tape feeding mechanism 5. The tape winding part 3 may be referred to as a tape cutting mechanism.

  The tape winding unit 3 includes a metal rotary drum 6 having a radial cutout 8, an electric wire chuck (not shown) disposed on one or both sides of the cutout 8 of the rotary drum 6, and a tape cutting mechanism 21. And. The tape feeding mechanism 5 and the drive unit 4 will be described later.

  As shown also in FIG. 2, the tape cutting mechanism 21 includes an arcuate (nearly circular) metallic annular band 18 arranged along the outer peripheral surface of the rotating drum 6, and a lower end of the notch 26 of the annular band 18. An edge-shaped fixed blade (blade portion) 18a formed on the outer peripheral surface of the annular band 18, a substantially semicircular (arc-shaped) metal cutting band 7, and a cutting band 7 and a tape pressing portion 7a formed at the top end of the upper portion.

  As shown in FIG. 2, the cutting band 7 has an arc-shaped rack (gear) 25 integrally on the outer peripheral surface, and the gear 14 meshes with the arc-shaped rack 25, and the gear 14 is moved in the forward and reverse directions by driving means such as a motor. The cutting band 7 is rotated to advance and retract along the outer surface of the annular band 18. The cutting band 7 is supported so as to be able to advance and retract by slidably engaging both ends in the width direction with a pair of opposed arcuate guide grooves (not shown) on the case 2 side.

  The annular band 18 in this example is fixed to the case side, and supports, for example, slidable (rotatable) slidable large diameter portions (not shown) on both sides of the outer peripheral surface of the rotary drum 6 on the inner peripheral surface of the annular band 18. The adhesive tape (tape) 17 can be introduced into the gap 41 between the outer peripheral surface of the rotating drum 6 and the inner peripheral surface of the annular band 18. The inner circumferential surface of the cutting band 7 is preferably in contact with the outer circumferential surface of the annular band 18 so as to be slidable.

  The fixed blade 18a of the annular band 18 may be formed separately from the annular band body 18b and fixed to the annular band body 18b. The same applies to the pressing portion 7a of the cutting band 7 or the movable blade (not shown). The lengths of the opening 8a of the notch 8 of the rotating drum 6 and the notch 26 of the annular band 18 are approximately the same. The notch 8 is formed deeper than the center of the rotating drum 6.

  The tape pressing portion 7 a at the tip of the cutting band 7 is positioned on the upper end 18 c side of the notch 26 of the annular band 18 at the retracted position of the cutting band in FIG. A tape guide roller 32 is disposed in front of the upper end 18c of the notch 26 in the vicinity of the outer surface of the cutting band 7, and both ends of the guide roller 32 are fixed to the case side.

  The tape guide plate 40 is horizontally disposed above the cutting band 7, and the curved portion 40 a on the distal end side of the guide plate 40 is close to the guide roller 32. Adjacent to the rear of the guide plate 40, a tape locking means 34 is disposed.

  The tape lock means 34 includes a lower cam 35 and an upper fixing portion 36 that faces the cam 35. The fixing portion 36 is preferably an elliptical roller, but may have a square cross section and preferably has a small contact area with the upper surface (adhesive surface) of the adhesive tape 17. The adhesive tape 17 is guided along the upper surface of the guide plate 40 from the lower surface of the fixing portion 36.

  The cam 35 is fixed to a gear (not shown), and the gear meshes with the gear 14 on the arc-shaped rack 25 side of the cutting band 7. As the cutting band 7 rotates, the cam 35 rotates clockwise in FIG. 2 and the adhesive tape 17 is sandwiched and fixed (locked) with the fixing portion 36. Refer to the example of FIG.

  The front end portion 17a of the adhesive tape 17 is supplied by being hung down in front of the notch portion 8 of the rotary drum 6 as indicated by a dotted line in FIG. A block having a triangular cross section is disposed between the tape tip portion 17a hanging down and the fixed blade 18a on the lower side of the annular band 18, and the left and right ends of the block 37 are fixed to the case 2 side. A leaf spring (elastic member) 38 having a free end side elastic portion 38a bent in a substantially triangular shape is fixed to the inclined surface 37a on the inner side of the block 37 so as to face slightly below.

  A gap 39 is provided between the block 37 and the annular band 18 to allow the tip 7b of the cutting band 7 to enter, and the elastic part 38a of the leaf spring 38 projects into the gap 39. As shown in FIGS. 3 to 4, when the tip 7 b of the cutting band 7 enters the gap 39, the elastic part 38 a of the leaf spring 38 is the outer surface (adhesive surface) of the adhesive tape 17 along the outer surface of the cutting band 7. The adhesive tape 17 is sandwiched between the outer surface of the cutting band 7 and fixed (locked). The leaf spring 38 acts as the second tape locking means 43 together with the block 37. The apex of the elastic section 38a having a triangular cross section contacts the adhesive surface of the adhesive tape 17 with a small contact area by line contact.

  The operation of the tape cutting mechanism 21 will be described below with reference to FIGS.

  As shown in FIG. 2, from the state where the cutting band 7 is retracted and the tip end portion 17a of the adhesive tape 17 is hung down as shown by the dotted line, the rotating drum together with the plurality of electric wires 33 with the upper guide roller 32 as a fulcrum. 6 is inserted into the notch 8. At the same time, the inner surface (adhesive surface) of the tip end portion 17 a of the adhesive tape 17 is weakly bonded to the outer peripheral surface of the electric wire 33. The tape lock means 34 is unlocked. The electric wire 33 is held by a chuck (not shown).

  As shown in FIG. 3, the rotary drum 6 is driven about ¼ turn counterclockwise by the drive unit 4 (FIG. 1), and the adhesive tape 17 is pulled out along the guide plate 40, and almost one around the electric wire 33. It is wound. The opening 8a of the notch 8 of the rotating drum 6 moves downward. Since the length of the tape to be drawn differs depending on the thickness of the electric wire 33 to be wound, the rotation amount of the rotary drum 6 is calculated in advance as a programmed value.

  Next, the cutting band 7 is rotated forward by the gear mechanisms 14 and 25 and covers the notch opening 26 of the annular band 18 and passes outside the fixed blade 18a on the lower side of the annular band 18 as shown in FIG. The adhesive tape 17 is cut (sheared) by entering the gap 39 between the block 37 and the opening lower end side of the annular band 18, and the tape pressing portion 7 a at the tip of the cutting band 7 and the fixed blade 18 a of the annular band 18. In this example, the fixed blade 18a is formed on the annular band 18, but the tape 17 may be cut using the tape pressing portion 7a as the blade portion.

  When cutting the adhesive tape 17, the cam 35 rotates clockwise toward the fixing portion 36 at the time of FIG. 3, and the cam 35 stands up in FIG. 4 to lock the adhesive tape 17 with the fixing portion 36. At substantially the same time, the distal end portion 7b of the cutting band 7 presses the adhesive tape 17 on the outer surface side against the elastic portion 38a of the leaf spring 38 to lock it.

  In this way, the adhesive tape 17 is locked at two locations, so that the adhesive tape 17 is surely and neatly cut so as to be torn with the fixed blade 18a without stretching. In particular, since the adhesive tape 17 is locked in the vicinity of the tape pressing portion 7a and the blade portion 18a, the distance between the blade portion 18a and the lock portion (leaf spring) 38 is extremely short. The elongation of the adhesive tape is so small that it can be ignored, and the adhesive tape 17 is cut smoothly and reliably.

  Since the adhesive tape 17 is cut without being stretched, the length of the adhesive tape for winding the tape is always specified accurately, and the winding of the electric wire 33 by the adhesive tape 17 is always accurately performed with a constant quality. . Moreover, even if it is a thick adhesive tape, even if it is a thick adhesive tape, it cut | disconnects reliably without slipping by locking the adhesive tape 17 in the vicinity in the vicinity of the blade parts 7a and 18a.

  Further, since the adhesive tape 17 is maintained without being stretched between the fixed blade 18a and the locking means 34, the tape 17 that has been maintained without being stretched is used when the tape is wound around the next time by the rotary drum 6, and the accurate tape 17 is used. The winding length is secured.

  The leaf spring 38 also presses the free end portion 7b of the cutting band 7 toward the center of the rotary drum 6 to perform the function of accurately regulating the position of the free end portion 7b. The cutting band 7 is made of metal, but when formed in a thin plate shape, the free end 7b is easily bent outward, and the free end 7b approaches the fixed blade 18a with an accurate trajectory while suppressing the bending. The leaf spring 38 is effective for making this happen.

  The rotating drum 6 further rotates counterclockwise from the tape cut state of FIG. 4, and the adhesive tape 17 ′ from the notch 8 to the fixed blade 18 a is wound around the outer periphery of the electric wire 33, and the binding of the electric wire 33 is completed. . When the winding is completed, the cutting band 7 is retracted to the original position in FIG. 2 by the reverse rotation of the gear 14, and the opening 8a of the notch 8 of the rotating drum 6 is also returned to the horizontal position in FIG. A chuck (not shown) to which the electric wire bundle 33 is fixed is opened, and the electric wire bundle (wire harness) 33 wound with tape is taken out by the operator.

  The cutting band 7 that closes the notch opening 26 of the annular band 18 may be raised (retracted) when the tape winding in FIG. 4 is completed, or may be raised before the tape 17 is wound in FIG. If anything, the former is preferable from the viewpoint of preventing the next standby tape 17 from being caught, safety, and the like.

  Hereinafter, the drive unit 4 and the tape feeding mechanism 5 of the tape winding device 1 will be described with reference to FIG.

  The drive unit 4 includes means for driving the rotating drum 6, means for driving the cutting band 7, and means for driving the adhesive tape feeding mechanism 5. The structure of the drive unit 4 described below is merely an example, and the structure of the drive unit 4 is appropriately set as necessary.

  A gear 9 is provided integrally with the rotary drum 6, and a pair of driving gears 10, 11 mesh with each other above and below the gear 9, and the pair of gears 10, 11 are moved in the same direction by a motor 13 via a belt 12 or the like. One of the gears (10 or 11) is rotated and always drives the rotating drum 6 counterclockwise in FIG. 1 regardless of the position of the notch 8 of the rotating drum 6. The gear 14 meshed with the gear 25 of the cutting band 7 is driven by the motor 15 at an angle of about 90 °, for example. The motors 13 and 15 are fixed to the case 2.

  The adhesive tape feeding mechanism 5 includes a shaft portion 27 that rotatably holds the adhesive tape reel 16, a circular rotating plate 19 provided with the shaft portion 27, and a roller columnar shape protruding from the outer peripheral side of the rotating plate 19. A one-way bearing 20 and a plurality of small-diameter pin-shaped guide rollers (not shown), a small gear 23 provided on the shaft portion 22 of the one-way bearing 20, and a large-diameter ring that meshes with the small gear 23. And an internal gear (fixed gear) 24.

  The one-way bearing 20 rotates counterclockwise and revolves clockwise along the internal gear 24. The adhesive tape reel 16 refers to a tape in which an adhesive tape 17 is spirally wound in multiple layers on the outside of a paper tube 26.

  A gear (pulley) 28 is fixed to the center portion of the shaft portion 27 on the back side of the internal gear 24, a toothed belt 29 meshes with the gear 28, and the belt 29 is driven by a motor 31 via a reduction belt 30.

  The rotating plate 19 rotates clockwise (revolution direction), the small gear 23 rotates along the internal gear 24, and the one-way bearing 20 revolves together with the rotating gear 19 while rotating integrally with the small gear 23, thereby causing adhesion. The tape 17 is unwound from the tape reel 16 (unraveled), and supplied to the rotary drum 6 side through the tape lock means 34 at the front.

  5A to 5C show another embodiment of a tape cutting mechanism according to the present invention.

  This tape cutting mechanism 21 'increases the length of the hanging portion of the adhesive tape 17 by changing the shape of the tape cutting band 7', and the tape winding length at the start of winding (first roll) on the electric wire 13 This improves the sticking property on the center side. Since the configuration other than the cutting band 7 ′ is basically the same as that of the above-described embodiment of FIG. 2, the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIG. 5A, the cutting band 7 ′ is formed to have a large diameter by slightly projecting the distal end portion 7b ′ in the outer diameter direction, and the distal end portion 7b ′ and the band main portion (reference numeral 7 ′ are substituted). The inner surface of the bent portion 7c 'between the first and second portions is a pressing portion 7a'. As shown in FIG. 5B, the front end portion 7b 'is not in contact with the fixed blade 18a below the front end of the annular band 18, As shown in FIG. 5 (c), the tip end portion 7b ′ is allowed to escape to the outside of the annular band 18 together with the adhesive tape 17 to form an extended portion 17a ′ of the adhesive tape 17, and the tape portion 17 ′ following the extended portion 17a ′ is banded. Cutting is performed by the pressing portion 7a ′ at the distal end of the main body portion (at the proximal end of the distal end portion 7b ′) and the fixed blade 18a of the annular band 18.

  The distal end portion 7b 'of the cutting band 7' is formed substantially concentrically with the band main body. The pressing portion 7a 'in this example is not sharpened in an edge shape, but is formed by a curved surface, and the fixed blade 18a is formed in a sharp shape in the edge shape. The adhesive tape 17 is cut by the adhesive tape 17 being pressed against the fixed blade 18a by the curved inner surface 7a 'of the cutting band 7'. It is also possible to bend the distal end portion 7b 'of the cutting band 7' at a right angle or an acute angle from the band main part, and to form the pressing part 7a 'as a movable blade with a sharp edge.

  By the cutting band 7 ′ having the above configuration, an extended portion 17 a ′ indicated by a dotted line of the adhesive tape 17 in FIG. The extension portion 17 a ′ is located below the opening 8 a of the notch 8 of the rotary drum 6.

  As shown in FIG. 5B, in a state where the rotary drum 6 is rotated halfway and the electric wire 13 is wound almost once with the adhesive tape 17, the gear 25 is driven by the gear 14 to rotate the cutting band 7 'forward. The adhesive tape 17 is pushed downward at the tip 7b ″ of the cutting band 7 ′, passes through the fixed blade 18a, and is extended along the outer peripheral surface of the annular band 18 as shown in FIG. The fixed blade 18a presses the adhesive tape 17 against the pressing portion 7a ′ and cuts it in a state where the distal end portion 7b ′ of the cutting band 7 ′ is folded and arranged in a substantially U shape.

  The gear 14 meshes with a large-diameter gear 42, a cam 35 is fixed to the gear 42, the cam 35 rotates integrally with the gear 42, and a long-diameter portion of the cam 35 and a roller-like fixing portion 36 on the fixed side. The adhesive tape 17 is locked with the adhesive tape 17 interposed therebetween.

  It is also effective to employ the block 37 and the leaf spring 38 of the embodiment of FIG. 2 in the embodiment of FIG. The distal end portion 7b 'of the cutting band 7 is pressed together with the adhesive tape 17 by the leaf spring 38, so that the locking of the adhesive tape 17 and the positioning of the distal end portion 7b' of the cutting band 7 are performed reliably.

  In each of the above-described embodiments, the fixed blade 18a is provided on the annular band 18. However, apart from the annular band 18 (for example, close to the outer surface of the annular band 18), a fixed blade (blade) having a plate shape, an arc shape, or the like. Part) can also be provided.

  Further, in each of the above embodiments, the annular band 18 having the fixed blade 18a is fixed. However, the cutting band 7 and the annular shape can be rotated like the cutting band 7 (in a direction opposite to the cutting band 7). It is also possible to cut the adhesive tape 17 with the pressing portion 7a and the blade portion 18a or both movable blades 7a and 18a by rotating the belt 18 in the opposite direction. In this case, the annular band 18 is driven by a drive mechanism such as gears 14 and 25 in the same manner as the cutting band 7. Also in this structure, the structure of the first tape lock means 34 in FIG. 2, the leaf spring 38 as the second tape lock means, and the blade portion 7a ′ of the tip end portion 7b ′ of the cutting band 7 ′ in FIG. Is applicable.

  Instead of the gears 14 and 25, the cutting band 7 and the annular band 18 can be driven by a belt drive (not shown). In this case, for example, one end of the belt is fixed to the upper end side of the cutting band 7, etc., the other end of the belt is fixed to the lower end side of the cutting band 7, etc., and the belt is crossed and hung on the guide pulley. Hung on the motor pulley.

  In each of the above embodiments, it is of course possible to use a non-adhesive tape instead of the adhesive tape 17. In this case, an adhesive can be applied in advance to the bound body side, or an adhesive can be applied at the beginning and end of winding of the tape.

  In addition, a coil spring or the like is used instead of the plate spring 38 of the above embodiment, and a guide plate or the like (not shown) that contacts the adhesive tape 17 with a small area by line contact or the like is provided at the tip of the coil spring or the like. It is also possible.

  Further, even if the leaf spring 38 is eliminated and only the upper (first) tape locking means 34 is used, it is not possible to use the leaf spring 38, but the adhesive tape 17 is locked at one place. Thus, it is possible to suppress the elongation of the adhesive tape 17 and thereby improve the cutting property even with a thick adhesive tape.

  Further, even when the upper and lower tape locking means 34 and 43 are eliminated, it is not possible to use these locking means 34 and 43, but the adhesive tape 17 is attached by the arc-shaped cutting band 7 and the arc-shaped annular band 18. By shearing in the tangential direction, the elongation of the adhesive tape 17 is suppressed as much as possible, and even a relatively thick adhesive tape can be cut.

1 shows an embodiment of a tape winding device and a tape winding method provided with a tape cutting mechanism according to the present invention, (a) is a plan view, and (b) is a front view. It is a front view before tape cutting which shows one embodiment of a tape cutting mechanism. It is a front view just before tape cutting which similarly shows a tape cutting mechanism. It is a front view at the time of the tape cutting which similarly shows a tape cutting mechanism. (A)-(c) is a front view which shows the other form of a tape cutting mechanism in order of a tape cutting. One Embodiment of the tape winding apparatus provided with the conventional tape cutting mechanism is shown, (a) is a front view, (b) is a front view of a rotating drum.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tape winding apparatus 6 Rotating drum 7, 7 'Cutting band 7b' Tip side part 8 Notch part 17 Adhesive tape (tape)
18 Annular band 18a Blade 21 Tape cutting mechanism 26 Notch opening 33 Electric wire (bound object)
34 Locking means 38 Leaf spring (elastic member)

Claims (9)

  A rotating drum having a notch for inserting the bundled body together with the tape, a blade disposed near the outer periphery of the rotating drum, and an arcuate shape that rotates the outer periphery of the rotating drum toward the blade A tape cutting mechanism comprising: a cutting band, wherein the tape is sheared by the cutting band and the blade portion.   The tape cutting mechanism according to claim 1, wherein the blade portion is formed in an annular band having a notch opening communicating with the notch portion.   The tape cutting mechanism according to claim 1 or 2, wherein the blade portion rotates toward the cutting band.   4. The apparatus according to claim 1, further comprising a lock unit configured to sandwich and fix the tape near the rotating drum, wherein the shearing is performed in a state where the tape is fixed by the lock unit. Tape cutting mechanism.   5. The tape cutting mechanism according to claim 4, wherein the locking means is locked and unlocked in conjunction with rotation of the cutting band.   The elastic member for pressing and fixing the tape along the outer surface of the cutting band to the outer surface is provided on the blade portion side, and the shearing is performed in a fixed state of the tape. The tape cutting mechanism according to the above.   The tip side portion of the cutting band escapes to the outside of the blade portion, and the blade portion is pressed against the base side of the tip side portion to cut the tape. The tape cutting mechanism as described.   The tape cutting mechanism according to any one of claims 1 to 7, wherein the tape cut by the cutting band and the blade portion is wound around the bound body by a rotating operation of the rotating drum. Tape winding device with a tape cutting mechanism.   The tape cutting mechanism according to any one of claims 1 to 7, wherein the tape is cut with the cutting band and the blade portion, and the cut tape is wound around the bundled body by a rotating operation of the rotating drum. A tape winding method characterized in that

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