JP4767109B2 - Tape transport roller and taping device - Google Patents

Description

  The present invention relates to a tape transport roller used for transporting a carrier tape in which an electronic component such as a semiconductor device is accommodated, and further transports the carrier tape using the tape transport roller or covers the carrier tape. The present invention relates to an apparatus for crimping a tape.

  Small electronic components, such as semiconductor devices, are housed one by one in recesses (embossed portions or housing portions) formed at predetermined intervals on a carrier tape, and sealed in a cover tape that is crimped to the carrier tape. Often shipped from.

  Such storage of electronic components on the carrier tape and crimping of the cover tape are performed by a taping device. In the taping device, a reel on which the carrier tape is wound and a reel on which the carrier tape is wound are set. Electronic components are sequentially stored in the embossed portion of the embossed tape drawn out from one reel. Thereafter, the cover tape drawn from the other reel is overlaid on the embossed tape, and both the tapes are thermocompression bonded at the crimping portion. Thereby, an electronic component is sealed in the embossed tape. The embossed tape with the electronic components sealed is wound on a reel and shipped from the factory.

  Regarding the embossed tape and the taping device, Patent Documents 1, 2 and the like have been proposed.

  The taping apparatus as described above is provided with a transport roller for transporting the carrier tape. In addition, there are various types of carrier tapes, and the widths thereof are also various. For this reason, it is necessary to change the axial width (roller width) of the transport roller in accordance with the width of the carrier tape.

In the conventional conveyance roller, one conveyance roller is divided into two rollers around which one and the other part of the carrier tape are wound, and a spacer (also referred to as a collar) is sandwiched between these two rollers. The roller width is adjusted to match the carrier tape width by removing the spacer from between the two rollers.
JP-A-8-26375 JP-A-4-352611

  However, the conventional roller width adjusting method has a problem that it takes time to insert a spacer between two rollers or to remove a spacer from between the two rollers.

  In addition, the removed spacer is often lost, and it is necessary to strictly store and manage the spacer.

  An object of the present invention is to provide a tape transport roller that can easily adjust the roller width in accordance with the carrier tape width without attaching or detaching a spacer, and an apparatus including the tape transport roller.

  The tape transport roller according to one aspect of the present invention includes a first roller on which one part in the width direction of the carrier tape is wound, and a coaxially arranged with the first roller, and the other part in the width direction of the carrier tape is wound on. Second roller. The first roller has a first contact surface whose axial position changes in accordance with the rotational direction position, and the second roller rotates the first and second rollers of the first contact surface. It has the 2nd contact surface contact | abutted in the axial direction in the part according to the combination phase in a direction, It is characterized by the above-mentioned.

  In addition, the taping apparatus which conveys a carrier tape using the said tape conveyance roller, and crimps | bonds a cover tape with respect to this carrier tape, and the other apparatus which has a tape conveyance roller also comprise the other side surface of this invention.

  According to the present invention, the width between the two rollers can be adjusted by changing the phase of combining the first roller and the second roller. That is, the width between both rollers can be easily adjusted according to the width of the carrier tape without attaching or detaching the spacer.

  Embodiments of the present invention will be described below with reference to the drawings.

  1A, 2 and 3 show the configuration of a taping apparatus which is Embodiment 1 of the present invention. 1A is a front view of the taping device, FIG. 2 is a side view of a crimping portion of the taping device, and FIG. 3 is an enlarged view of a part of FIG.

  In these drawings, 1 is an apparatus frame, and 2 and 3 are sprocket rollers as tape transport rollers around which an embossed tape (carrier tape) 4 to be pressure-bonded to a cover tape 11 from a pressure-bonding head 9 described later is wound. . The sprocket roller 2 is provided on the upstream side of the crimping region (crimping position) where both the tapes 4 and 11 are crimped by the crimping head 9 and conveys the embossed tape 4 before the cover tape 11 is crimped. Further, the sprocket roller 3 is provided on the downstream side of the crimping region, and conveys the embossed tape 4 after the cover tape 11 is crimped. Detailed configurations of the sprocket rollers 2 and 3 will be described later as third and fourth embodiments.

  As shown in FIG. 1B, the embossed tape 4 is a tape in which a plurality of embossed portions (accommodating portions) 4a, which are rectangular recesses in the longitudinal direction, are formed at predetermined intervals, and flat surface portions 4b are formed on both sides in the width direction. Is formed. On one flat surface portion 4b, a plurality of sprocket holes 4c into which the sprocket pins of the sprocket rollers 2 and 3 are inserted are formed at predetermined intervals. A semiconductor device (electronic component) 15 such as an IC, an LSI, or a memory is inserted into each embossed portion 4a one by one by a component supplier (not shown) provided in the taping device.

  And the cover tape 11 is crimped | bonded to the flat surface part 4b of the both sides of the embossed tape 4 so that the opening of the embossed part 4a in which the semiconductor device 15 was inserted may be covered. Thereby, the semiconductor device 15 is sealed (packed) by the embossed tape 4 and the cover tape 11. The cover tape 11 is pressed against the embossed tape 4 while avoiding the sprocket holes 4c. For this reason, the embossed tape 4 after the cover tape 11 is pressure-bonded can be conveyed by the sprocket roller 3.

  A reel support portion 1a is configured as a part of the apparatus frame 1, and a reel 10 around which a cover tape 11 is wound is rotatably supported at the upper end of the reel support portion 1a.

  On the lower side of the crimping region between the sprocket rollers 2 and 3, a rail portion 5a for supporting the embossed tape 4 fed from the sprocket rollers 2 and 3 from below and guiding the tape in the longitudinal direction of the tape is provided. A contact base 5 as a support base is disposed. The rail portion 5 a has two rail surfaces (base surfaces) 5 b that are formed at a position one step down from the upper end surface of the contact base 5 and come into contact with the lower surface of the flat surface portion 4 b of the embossed tape 4. Furthermore, a groove 5c for allowing the embossed portion 4a of the embossed tape 4 to pass therethrough is formed between the two rail surfaces 5b. The contact base 5 is held by a spherical holding mechanism 20 described later.

  The crimping head 9 is attached to the lower end portion of the contact block 8 in a replaceable manner. The crimping head 9 has two crimping irons 9a extending in the longitudinal direction of the two tapes 4 and 11 on the rail portion 5a. The two crimping irons 9 a have an interval that matches the width of the cover tape 11.

  The contact block 8 has an electric heater (not shown) inside, and heats the crimping head 9 (crimping iron 9a) to a temperature suitable for thermal welding (crimping) of the cover tape 11 to the embossed tape 4. When the cover tape 11 (and the embossed tape 4) having different widths is used, the pressure-bonding head 9 is also replaced with one having a pressure-welding iron 9a with a distance corresponding to the width of the cover tape 11. A region of the rail portion 5a facing the crimping head 9 (crimping iron 9a) is a crimping region or a crimping position in the present embodiment.

  The contact block 8 is fixed to the lower end portion of the connection member 6, and the upper end portion of the connection member 6 is attached to the lower end of the rod 7 a of the pneumatic cylinder (actuator) 7 via a damper mechanism 16. The cylinder portion 7 b of the pneumatic cylinder 7 is fixed to the device frame 1. The crimping head 9 is driven in the vertical direction by the expansion / contraction operation of the pneumatic cylinder 7, and the crimping iron 9 a is pressed against the cover tape 11 superimposed on the embossed tape 4 on the rail portion 5 a during the downward movement. 11 is pressure-bonded to the embossed tape 4. For this reason, the up-down direction is the crimping direction. The damper mechanism 16 has a role of adjusting so that the pressing force by the crimping iron 9a can be reliably obtained and does not become excessively large.

  Next, the configuration of the spherical surface holding mechanism 20 that supports the contact base 5 will be described with reference to FIGS. 3 and 4A to 4E. In the following description, the vertical direction means the vertical direction (Z-axis direction) in FIG.

  Reference numeral 21 denotes a base fixing member to which the contact base 5 is fixed. As shown in FIG. 4A, the base fixing member 21 includes a substantially circular plate 211 and a shaft 212 that extends downward from the center of the lower surface of the plate 211. A θz rotation prevention hole 213 that penetrates the plate 211 in the thickness direction (vertical direction) is formed in the periphery of the plate 211.

  Reference numeral 23 denotes a spherical ring. As shown in FIG. 4C, the outer peripheral surface is constituted by a convex spherical surface 231. The center C of the convex spherical surface 231 is set to the center in the vertical direction of the spherical ring 23 as shown in FIG. Further, as shown in FIG. 4C, a ring hole 232 penetrating in the vertical direction is formed in the inner periphery of the spherical ring 23. As shown in FIG. 3, the shaft 212 of the base fixing member 21 is inserted into the ring hole 232, and the shaft 212 protrudes below the spherical ring 23.

  Reference numeral 24 denotes a spherical seat, which is constituted by a pair of members 24A and 24B divided into two in the circumferential direction, as shown in FIG. 4D. The inner peripheral surface of the spherical seat 24 (24A, 24B) is a concave spherical surface 241. The center of the concave spherical surface 241 coincides with the center C of the convex spherical surface 231 of the spherical ring 23 as shown in FIG. The spherical seat 24 (24A, 24B) holds the spherical ring 23 so as to sandwich the spherical ring 23, and the concave spherical surface 241 and the convex spherical surface 231 of the spherical ring 23 come into contact with each other, whereby the spherical ring 23 swings with respect to the spherical seat 24. Movement is allowed. Accordingly, the contact base 5 fixed to the base fixing member 21 integrated with the spherical ring 23 can also swing around the center C of the spherical surfaces 231 and 241.

  Here, the base fixing member 21 and the contact base 5 can swing around the point C, and the rotation θz around the Z axis is blocked by a θz rotation prevention post 27 described later.

  Reference numeral 25 denotes a spherical seat holding member. As shown in FIG. 4B, the spherical seat holding member 25 is a thick plate-like member formed in a substantially rectangular shape when viewed from above. A large-diameter hole 251 and a small-diameter hole 252 are formed in the central portion of the spherical holding member 25 so that their central axes coincide with each other. The large-diameter hole 251 and the small-diameter hole 252 are formed as one continuous hole so as to penetrate the spherical holding member 25 in the vertical direction. A step portion 256 is formed at a connection position between the large diameter hole 251 and the small diameter hole 252.

  In addition, a cut 253 is formed in the spherical seat holding member 25 from the side surface through the center of the large diameter hole 251 and the small diameter hole 252 to a position outside the large diameter hole 251. The end portion 253a of the cut 253 is formed in a cylindrical surface shape that is wider than other portions.

  Furthermore, a screw hole 254 extending across the notch 253 is formed at a portion between the side surface of the spherical seat holding member 25 where the notch 253 opens and the holes 251 and 252. Further, the spherical seat holding member 25 is formed with a post holding hole 255 for holding a later-described θz rotation prevention post 27. The post holding hole 255 opens on the upper surface of the spherical seat holding member 25.

  The spherical seat holding member 25 is fixed to the apparatus frame 1 with a bolt 26 as a base member of the spherical holding mechanism 20.

  As shown in FIG. 4E, the spherical seat 24 (24A, 24B) holding the spherical ring 23 is inserted into the large-diameter hole 251 of the spherical seat holding member 25 configured as described above. The lower surface of the spherical seat 24 abuts on the step portion 256, and the position in the vertical direction within the spherical seat holding member 25 is determined. The shaft 212 of the base fixing member 21 extending below the spherical ring 23 is inserted into the small-diameter hole 252, and the male screw portion that protrudes below the spherical seat holding member 25 of the shaft 212 serves as a weight. A balancer 22 is attached. A spacer 235 is disposed between the spherical ring 23 and the balancer 22 on the outer periphery of the portion of the shaft 212 that protrudes downward from the ring hole 232.

  Further, the lock screw 29 is screwed into the screw hole 254. When the lock screw 29 is tightened in a state where the spherical seat 24 holding the spherical ring 23 is inserted into the large-diameter hole 251, the spherical seat holding member 25 is centered on the end portion 253a of the cut 253 due to the presence of the cut 253. The large diameter hole 251 is deformed so as to narrow in the radial direction. As a result, the inner peripheral surface of the large-diameter hole 251 pushes the spherical seat 24 (24A, 24B) radially inward, and the concave spherical surface 241 of the spherical seat 24 is pressed against the convex spherical surface 231 of the spherical ring 23. Thereby, the rocking of the spherical ring 23 with respect to the spherical seat 24 is prevented by the friction between the concave spherical surface 241 and the convex spherical surface 231. That is, the contact base 5 is fixed (locked) to the spherical seat holding mechanism 20.

  As shown in FIG. 4E, the lower portion of the θz rotation prevention post 27 is inserted into the post holding hole 255 formed in the spherical seat holding member 25. The θz rotation prevention post 27 inserted into the post holding hole 255 is fixed by a screw 28 inserted from the lower surface side of the spherical seat holding member 25.

  The upper portion of the θz rotation prevention post 27 protrudes from the upper surface of the spherical seat holding member 25 and is inserted into a θz rotation prevention hole 213 formed in the base fixing member 21. For this reason, even if the rocking of the base fixing member 21 and the contact base 5 by the lock screw 29 is not locked, the rotation θz about the Z axis of the base fixing member 21 and the contact base 5 is prevented. Therefore, even if the contact base 5 can swing around the center C, the direction in which the rail portion 5a extends (that is, the guide direction of the embossed tape 4) is shifted around the Z axis with respect to the crimping iron 9a. There is no.

  Further, the upper outer peripheral surface of the θz rotation prevention post 27 is formed by a convex spherical surface 271 so that it does not interfere with the inner peripheral surface of the θz rotation prevention hole 213 when the base fixing member 21 swings about the center C. Is formed. For this reason, the θz rotation prevention post 27 does not prevent the base fixing member 21 (that is, the contact base 5) from swinging.

  As described above, in the taping device of this embodiment, the contact base 5 supporting the embossed tape 4 is prevented from rotating θz around the Z axis by the spherical surface holding mechanism 20 and is allowed to swing around the C point. To do. Therefore, by simply pressing the crimping iron 9a against the rail surface 5b (or the embossed tape 4 placed here), the contact base 5 swings so that the rail surface 5b is parallel to the crimping iron 9a. The parallelism between 5b and the crimping iron 9a is adjusted.

  However, when a larger swing amount of the contact base 5 is allowed, a position adjusting mechanism in the Y and X axis directions with respect to the connection member 6 or the contact block 8 of the contact block 8 or the crimping head 9 may be provided.

  After the parallelism is adjusted in this manner, the lock of the contact base 5 is locked by tightening the lock screw 29. Thereafter, the embossing is performed while the parallelism between the rail surface 5b and the crimping iron 9a is maintained. Appropriate pressure bonding between the tape 4 and the cover tape 11 can be performed.

  Then, as in this embodiment, the contact base 5 is supported by the spherical surface holding mechanism 20, so that the driving load (weight of the driven object) of the pneumatic cylinder 7 that drives the crimping head 9 in the vertical direction is crimped. This is smaller than when the head is supported by the spherical surface holding mechanism. Therefore, the crimping head 9 can be driven up and down at high speed, and as a result, the processing speed of the taping device can be improved.

  Moreover, since the driving load of the pneumatic cylinder 7 is small, a small pneumatic cylinder can be used. Furthermore, since the structure that supports the crimping head 9 so as to be movable up and down does not require large rigidity and strength, the configuration can be simplified. Therefore, the taping device can be reduced in size and cost.

  In the first embodiment, the case where the rocking lock of the contact base 5 is performed by deforming the spherical seat holding member 25 by tightening the lock screw 29 to increase the friction between the spherical seat 24 and the spherical ring 23 will be described. However, other swing locking methods can be employed.

  In the first embodiment, the case where the swing center of the contact base 5 is set below the crimping region has been described. However, other swing centers can be set.

  FIG. 5 shows a configuration around the crimping region of the taping device that is Embodiment 2 of the present invention. In addition, the same code | symbol as Example 1 is attached | subjected to the component which is common in Example 1. FIG.

  Reference numeral 5 'denotes a contact base of this embodiment, which has a rail portion 5a for supporting the embossed tape 4 from below and guiding it in the transport direction. Further, the contact base 5 ′ of the present embodiment has a spherical portion 51 having a convex hemispherical shape on the lower surface thereof.

  Reference numeral 31 denotes a spherical seat in the present embodiment, which supports the spherical portion 51 of the contact base 5 'so as to be swingable. However, in the spherical seat 31 of the present embodiment, the upper ring portion 31b supports the spherical portion 51 with a concave spherical surface along the convex spherical surface of the spherical portion 51, but the lower portion supports the spherical portion 51 by the ring-shaped protrusion 31a. support. Thereby, a space 32 in which air can exist is formed between the spherical portion 51 and the spherical seat 31.

  A negative pressure path 33 connected to the space 32 is formed in the spherical seat 31, and a piping member 34 is connected to the negative pressure path 33. The piping member 34 is connected to the vacuum pump 35.

  For this reason, in a state where air (positive pressure) is present in the space 32, the contact base 5 'swings freely with respect to the spherical seat 31 (however, the Z axis is blocked by a θz rotation prevention post 27' described later). Swing other than rotation) is allowed. For this reason, simply pressing the crimping iron 9a against the rail 5a causes the contact base 5 'to swing so that the rail 5a is parallel to the crimping iron 9a, and the parallelism between the rail 5a and the crimping iron 9a. Can be adjusted.

  As in the first embodiment, the upper portion of the θz rotation prevention post 27 ′ has a convex spherical surface. However, since the rocking center C of the contact base is different from that of the first embodiment, the spherical center is also different from that of the first embodiment. By inserting the upper portion of such a θz rotation prevention post 27 ′ into a θz rotation prevention hole 55 formed in the contact base 5 ′, the rotation of the contact base 5 ′ around the Z axis is not hindered. The rotation θz is prevented.

  On the other hand, when a negative pressure is generated in the space 32 by the vacuum pump 35, the spherical portion 51 is attracted to the spherical seat 31, and the swing of the contact base 5 'relative to the spherical seat 31 is also prevented. That is, the contact base 5 ′ is fixed to the spherical seat 31.

  Here, in this embodiment, the center of contact C swing, that is, the spherical centers of the spherical seat 31 and the spherical portion 51 are set in the crimping region of the rail portion 5a facing the crimping iron 9a. For this reason, when the contact base 5 ′ swings with respect to the spherical seat 31, the rail portion 5 a only tilts about the center C and hardly moves in the X direction and the Y direction. Accordingly, even if the allowable swing amount of the contact base 5 'is increased to some extent, it is not necessary to provide a position adjusting mechanism in the Y and X axis directions with respect to the connection member 6 or the contact block 8 of the contact block 8 or the crimping head 9.

  In addition, the rocking | swiveling center C said to a present Example does not need to be the center of a crimping | compression-bonding area | region, but should just be a position included in the crimping | compression-bonding area | region as an area | region which has a certain width | variety, length, and height. For example, the swing center C is a plane including the two rail surfaces of the rail portion 5a and may be set at the center between the two rail surfaces, or a position slightly deviated from the center. You may set in the area | region close to the rail part 5a.

  Also in this embodiment, like the first embodiment, the contact base 5 ′ is supported by the spherical seat 31, thereby reducing the driving load of a pneumatic cylinder (not shown) that drives the crimping head 9 in the vertical direction. Can do. Therefore, the crimping head 9 can be driven up and down at high speed, and as a result, the processing speed of the taping device can be improved. Further, since the driving load of the pneumatic cylinder is small, a small pneumatic cylinder can be used. Furthermore, since the structure that supports the crimping head 9 so as to be movable up and down does not require large rigidity and strength, the configuration can be simplified. Therefore, the taping device can be reduced in size and cost.

  Next, the sprocket rollers 2 and 3 in the taping apparatus described in the first embodiment will be described as a third embodiment of the present invention with reference to FIGS. 6 and 7 show a cross section of the sprocket roller 3. Since the configuration of the sprocket roller 2 is the same as that of the sprocket roller 3, the description thereof is omitted here.

  6 and 7, reference numeral 301 denotes a rotating shaft of the sprocket roller 3. The rotating shaft 301 is rotatably supported by a bearing 300 attached to the apparatus frame shown in the first embodiment.

  A drive pulley 302 is attached to the rotary shaft 301 so as to be integrally rotatable. A timing belt 303 driven by a motor (not shown) is wound around the drive pulley 302. For this reason, the rotating shaft 301 is rotationally driven together with a sprocket flange 304 (described later) attached to the rotating shaft 301 so as to be integrally rotatable, and transmits the conveying force to the embossed tape 4.

  FIG. 8 shows the sprocket flange 304 as the first roller as viewed from the axial front end side (side to which a cap 306 described later is attached). The sprocket flange 304 is a disk-shaped member, and a plurality of sprocket pins 310 are held at equal intervals in the circumferential direction on the outer peripheral portion thereof. The sprocket flange 304 is rotated in a state in which the sprocket pin 310 is engaged with a sprocket hole formed on one flat surface portion of the embossed tape 4 wound around the outer peripheral surface of the sprocket flange 304, so that the conveying force is applied to the embossed tape 4. Can be transmitted. Reference numeral 311 denotes an adjustment mechanism for adjusting the protruding amount of the sprocket pin 310 using an eccentric cam.

  Two pairs of contact surfaces (first contact surfaces) 304a and 304b having different axial positions are formed on the side of the sprocket flange 304 that faces a guide flange 305 described later. The contact surface 304b is formed at a position protruding to the guide flange 305 side from the contact surface 304a. The contact surfaces 304a and 304b are formed at positions that are 90 ° out of phase with each other.

  9 and 10 show the guide flange 305 as the second roller as viewed from the axial front end side. The guide flange 305 is a disk-shaped member, and the other flat surface portion of the embossed tape 4 is wound around the outer peripheral surface thereof. A pair of contact surfaces (second contact surfaces) 305 a protruding in the axial direction is formed on the side of the guide flange 305 facing the sprocket flange 304 so as to sandwich the rotating shaft 301.

  The sprocket flange 304 and the guide flange 305 are attached to the rotating shaft 301 in this order. The sprocket flange 304 is attached to the rotating shaft 301 so as to be integrally rotatable by spline coupling or the like. On the other hand, the guide flange 305 inserts the pin 312 into the hole 305d formed in the contact surface 305a and the hole 304d formed in the contact surfaces 304a and 304b of the sprocket flange 304. Thus, the sprocket flange 304 is connected to the sprocket flange 304 so as to be integrally rotatable.

  A coil spring 307 is attached to a distal end portion of the rotating shaft 301 that protrudes from the guide flange 305 to the opposite side of the sprocket flange 304, and the coil spring 307 is attached to the distal end portion of the rotating shaft 301. A cap 306 is attached so as to be compressed with the 305. The guide flange 305 is urged toward the sprocket flange 304 by the elastic force of the coil spring 307, and is disposed at an axial position where the contact surface 305a contacts the contact surface 304a or 304b.

  A support rail 308 is provided between the sprocket flange 304 and the guide flange 305 to support the embossed portion of the embossed tape 4 wound around the sprocket roller 3. The support rail 308A shown in FIG. 6 has a width corresponding to the width H1 of the embossed tape 4A shown in FIG. 15, and the support rail 308B shown in FIG. 7 is embossed with a width H2 wider than that of the embossed tape 4A shown in FIG. It has a width corresponding to the tape 4B. 15 and 16, 4a is an embossed portion, 4b is a flat surface portion provided on both sides of the embossed portion, and 4c is a sprocket hole formed in one flat surface portion 4b.

  Here, as shown in FIG. 8, it is assumed that the sprocket flange 304 is attached to the rotary shaft 301 so that the contact surface 304a is positioned vertically and the contact surface 304b is positioned left and right. At this time, when the guide flange 305 is combined with the sprocket flange 304 so that the contact surface 305a is positioned vertically as shown in FIG. 9, the contact surface of the guide flange 305 is shown in FIG. 305a contacts the contact surface 304a of the sprocket flange 304. Thereby, the space | interval between the sprocket flange 304 and the guide flange 305 is set to the narrow space | interval corresponding to the width | variety of the embossed tape 4A.

  On the other hand, when the guide flange 305 is rotated by 90 ° from the rotational phase shown in FIG. 9 and combined with the sprocket flange 304 so that the contact surface 305a is positioned on the left and right as shown in FIG. As shown, the contact surface 305 a of the guide flange 305 contacts the contact surface 304 b of the sprocket flange 304. Thereby, the space | interval between the sprocket flange 304 and the guide flange 305 is set to the wide space | interval corresponding to the width | variety of the embossed tape 4B.

  Thus, according to the present embodiment, by changing the combination phase of the guide flange 305 with respect to the sprocket flange 304, the interval between the sprocket flange 304 and the guide flange 305, that is, the width of the embossed tape that can be conveyed is changed. be able to. Therefore, it is not necessary to attach or detach the collar (spacer) between the sprocket flange and the guide flange as in the conventional case, and it is not necessary to store or manage the collar that is not used.

  Further, in this embodiment, the guide flange 305 is biased toward the sprocket flange 304 by the coil spring 307. For this reason, when the combination phase of the guide flange 305 with respect to the sprocket flange 304 is changed, the guide flange 305 is moved to the front end side on the rotating shaft 301 against the urging force of the coil spring 307 and rotated, and the coil is again turned on. The guide flange 305 may be brought into contact with the sprocket flange 304 by the biasing force of the spring 307. That is, the combination phase of both flanges 304 and 305 can be easily changed without removing the guide flange 305 from the rotating shaft 301 one by one.

  In the third embodiment, the configuration in which the interval between the sprocket flange 304 and the guide flange 305 can be changed in two stages has been described, but it may be changed in three or more stages.

  11 and 12 mainly show cross sections of the sprocket flange 304 'and the guide flange 305' in the sprocket roller 3 as the fourth embodiment of the present invention. Components common to the third embodiment other than the sprocket flange 304 ′ and the guide flange 305 ′ are denoted by the same reference numerals as in the third embodiment.

  FIG. 13 shows a sprocket flange 304 ′. The center diagram of FIG. 13 is a diagram showing the sprocket flange 304 ′ as viewed from the front end side in the axial direction. The sprocket flange 304 ′ is a disk-shaped member, and a plurality of sprocket pins 310 are held at equal intervals in the circumferential direction on the outer peripheral portion thereof.

  Three pairs of contact surfaces 304a, 304b, and 304c having different axial positions are formed on the side of the sprocket flange 304 'that faces the guide flange 305'. The contact surfaces 304b and 304c are formed at a position protruding from the contact surface 304a toward the guide flange 305 ′, and the contact surface 304c is formed at a position protruding from the contact surface 304b toward the guide flange 305 ′. ing. The contact surfaces 304a, 304b, and 304c are formed at positions that are out of phase by 60 °. In each contact surface, a hole 304d for inserting a pin (not shown) (corresponding to the pin 312 of the third embodiment) is formed.

  FIG. 14 shows the guide flange 305 ′ as viewed from the axial front end side. The center diagram of FIG. 14 is a diagram showing the guide flange 305 ′ when viewed from the axial front end side. The guide flange 305 ′ is a disk-shaped member, and the other flat surface portion of the embossed tape 4 is wound around the outer peripheral surface thereof.

  On the side of the guide flange 305 ′ facing the sprocket flange 304 ′, a pair of contact surfaces 305 a protruding in the axial direction is formed so as to sandwich the rotating shaft 301. In one contact surface 305a, a hole 305d for inserting a pin (not shown) (corresponding to the pin 312 of the third embodiment) is formed.

  Here, it is assumed that the sprocket flange 304 ′ is attached to the rotating shaft 301 so that the contact surface 304 a is located on the upper left side and the lower right side as shown in the center diagram of FIG. 13. At this time, the guide flange 305 ′ is rotated 60 ° clockwise from the rotational phase shown in the center diagram of FIG. 14, and the rotating shaft 301 is positioned so that the abutment surface 305 a is located on the upper left and the lower right. When mounted on the top, the contact surface 305a of the guide flange 305 'contacts the contact surface 304a of the sprocket flange 304 as shown in FIG. Thereby, the space | interval between sprocket flange 304 'and guide flange 305' is set to the narrow space | interval corresponding to the width | variety of the embossed tape 4A.

  On the other hand, when the guide flange 305 'is mounted on the rotary shaft 301 so that the contact surface 305a is positioned on the left and right as shown in the center of FIG. 14, as shown in FIG. The contact surface 305a of 305 'contacts the contact surface 304b of the sprocket flange 304'. Thereby, the space | interval between sprocket flange 304 'and guide flange 305' is set to the intermediate space | interval corresponding to the width | variety of the embossed tape 4B.

  Further, the guide flange 305 ′ is rotated 60 ° counterclockwise from the rotational phase shown in the center diagram of FIG. 14 so that the contact surface 305 a is positioned on the upper right side and the lower left side. When mounted on 301, although not shown, the contact surface 305a of the guide flange 305 'contacts the contact surface 304c of the sprocket flange 304'. Thereby, the space | interval between sprocket flange 304 'and guide flange 305' is set to the wide space | interval corresponding to the embossed tape which has a width | variety larger than the embossed tape 4B.

  As described above, according to the present embodiment, by changing the combination phase of the guide flange 305 'with respect to the sprocket flange 304', the distance between the sprocket flange 304 'and the guide flange 305', that is, the embossable tape that can be conveyed. The width can be changed in multiple stages.

  In the third and fourth embodiments, the case where the distance between the sprocket flange and the guide flange can be changed stepwise has been described. However, the axial position of the contact surface of the sprocket flange changes continuously like a cam surface. So that the contact surface of the guide flange contacts the part corresponding to the combination phase of both flanges on the corresponding contact surface so that the space between the sprocket flange and the guide flange can be changed steplessly. Also good.

  Moreover, the sprocket roller (tape transport roller) described in the third and fourth embodiments can be used not only for the taping device but also for various devices that handle embossed tape (carrier tape).

The front view of the taping apparatus which is Example 1 of this invention. The perspective view which shows the embossing tape and cover tape which are crimped | bonded by the taping apparatus of Example 1. FIG. FIG. 3 is a side view of a crimping portion in the taping device according to the first embodiment. FIG. 3 is an enlarged side view of the crimping part of Example 1. The top view and side view which show the base fixing member which comprises a spherical surface holding | maintenance mechanism among the crimping | compression-bonding parts of Example 1. FIG. FIG. 3 is a top view and a side view showing a spherical seat holding member constituting the spherical holding mechanism of Embodiment 1. FIG. 2 is a top view and a side view showing a spherical ring that constitutes a spherical surface holding mechanism of Embodiment 1. FIG. 3 is a top view and a side view showing a spherical seat that constitutes the spherical surface holding mechanism of the first embodiment. The top view, front view, and side view which show the assembly state of the spherical surface holding mechanism among the crimping | compression-bonding parts of Example 1. FIG. The front view and side view of a crimping | compression-bonding part in the taping apparatus which is Example 2 of this invention. Sectional drawing which shows the sprocket roller in the taping apparatus which is Example 3 of this invention. Sectional drawing which shows the sprocket roller of Example 3. FIG. The front view, side view, and bottom view which show the sprocket flange which comprises the sprocket roller of Example 3. FIG. FIG. 6 is a front view showing a cover plate that constitutes a sprocket roller according to a third embodiment. FIG. 6 is a front view showing a cover plate that constitutes a sprocket roller according to a third embodiment. The fragmentary sectional view which shows the sprocket roller in the taping apparatus which is Example 4 of this invention. FIG. 9 is a partial cross-sectional view showing a sprocket roller according to a fourth embodiment. The front view, side view, and bottom view which show the sprocket flange which comprises the sprocket roller of Example 3. FIG. The front view, side view, and bottom view which show the cover plate which comprises the sprocket roller of Example 3. FIG. The top view, front view, and side view of the embossed tape conveyed by the sprocket roller of Example 3. The top view, front view, and side view of the embossed tape conveyed by the sprocket roller of Example 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus frame 2,3 Sprocket roller 4,4A, 4B Embossed tape 4a Embossed part 4b Flat surface part 4c Sprocket hole 5 Contact base 7 Pneumatic cylinder 8 Contact block 9 Crimp head 11 Cover tape 20 Spherical holding mechanism 21 Base fixing member 23 Spherical surface Rings 24, 31 Spherical seat 25 Spherical seat holding member 27 θz rotation prevention post 29 Lock screw 35 Vacuum pump 301 Rotating shaft 302 Drive pulley 304, 304 ′ Sprocket flange 304a, 304b, 304c Contact surface 305, 305 ′ Guide flange 305a Contact surface 306 Cap 307 Coil spring

Claims (6)

A tape transport roller around which a carrier tape for storing electronic components is wound;
A first roller around which one portion in the width direction of the carrier tape is wound;
A second roller disposed coaxially with the first roller and around which the other portion of the carrier tape in the width direction is wound;
The first roller has a first abutting surface whose position in the axial direction changes according to the position in the rotational direction,
The second roller has a second abutting surface that abuts in the axial direction on a portion of the first abutting surface corresponding to a combination phase in the rotation direction of the first and second rollers. Tape transport roller.   2. The tape transport roller according to claim 1, wherein the tape transport roller has a sprocket pin, the sprocket pin is inserted into a sprocket hole formed in the carrier tape, and the carrier tape is fed and driven. . The first contact surface includes a plurality of surfaces formed at a plurality of positions in the rotational direction and having different axial positions from each other.
3. The tape transport roller according to claim 1, wherein the second contact surface is in contact with a surface corresponding to the combination phase among the plurality of surfaces in an axial direction.   4. The tape transport roller according to claim 1, further comprising a biasing member that biases one of the first and second rollers in the axial direction toward the other. 5. Tape transport roller according to any one of claims 1 to 4,
A taping device comprising: a crimping head for crimping a cover tape to the carrier tape conveyed by the conveying roller. An apparatus comprising the tape transport roller according to any one of claims 1 to 4.