JP2006256766A - Web delivery device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a web delivery device capable of reducing the amount of the discarded web. <P>SOLUTION: This web delivery device 10 is structured of a delivery part 13, in which web coils 22a and 22b are set, a joint part 14 provided with a cutter 33, and a web disposing part 15. A web winding part 15 is structured of a nip roller 38 and a receiver roller 39 for pinching the web 9 delivered form the delivery part 13 and winding chucks 44a and 44b capable of rotating while holding both side ends of the web 9. A reflection type optical sensor 75 is provided to detect pass-through of the web in the web conveying direction on a downstream side of both the rollers 38 and 39. When a terminal side of the web 9 passes through the reflection type optical sensor 75, the winding chucks 44a and 44b hold side ends of the web 9, and while the cutter 33 cuts the web 9. Residual parts of the film 9 after cutting is wound by the winding chucks 44a and 44b to reduce amount of the web to be disposed as a loss. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a web feeding device that sequentially feeds a web from a web coil obtained by winding a web of a thin metal plate, paper, film or the like into a coil shape.

  In a production line for photographic photosensitive material, magnetic recording material, photosensitive lithographic printing plate, etc., a web of thin metal plate, paper, film, etc. is continuously run in the longitudinal direction while applying or drying photosensitive material, magnetic material or Various processes such as cutting and rewinding are performed. These webs are set in the form of a web coil wound in the form of a roll, and set in a web feeding device at the most upstream of the production line. And the web is pulled out from this web coil and sent out to the production line.

  In such a web feeding device, a plurality of web coils are set so that the web can be continuously fed to the conveyance line. Then, when the remaining length of the web remaining in the web coil during web feeding becomes equal to or less than a predetermined length, the web feeding is temporarily stopped and the web is cut at a predetermined position. Next, the leading end of the succeeding web sent from another web coil is joined to the rear end of the cut preceding web, and the succeeding web is continuously fed following the preceding web (see Patent Document 1). ).

Further, when the preceding web is cut, the web remaining on the core side of the web coil is discarded as a loss. And the remainder of this web is usually rewound by the core so that it is not necessary to provide a web disposal space in the apparatus (see Patent Document 2). The remainder of the web wound around the winding core in this way is separated from the winding core and discarded by a processing apparatus as described in Patent Document 3, for example.
Japanese Patent No. 3553282 (page 8, FIG. 1) JP-A-4-223957 (page 4) JP 5-17054 A (second and third pages)

  By the way, as described in Patent Document 2, in order to wind up the remainder of the web generated when the preceding web is cut onto the winding core, the end side of the web is not separated from the winding core. In addition, the set value of the remaining length of the web of the web coil at the time of starting the bonding needs to be a certain length or more. As a result, there arises a problem that the length of the web discarded as a loss cannot be shortened. In addition, as described in Patent Document 3, since the web (remaining winding) wound around the winding core must be separated from the winding core by another device, there is a problem that work is troublesome. .

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a web sending apparatus that can reduce the number of webs discarded as loss as much as possible.

  A web feeding device according to the present invention includes a web feeding unit that pulls out a web from a web coil and sends the web coil, a detection unit that is provided downstream of the web coil in the web conveyance direction, and detects the passage of the web. A cutting means provided on the downstream side in the web conveying direction, and cutting the web, and when the end side of the web separated from the core of the web coil passes the detection means, the cutting means is driven to drive the web A cutting control means for cutting the paper, and a winding means provided on a web conveyance path between the detection means and the cutting means, and gripping and winding up the remainder of the web cut by the cutting means. It is characterized by.

  A gripping switching mechanism capable of switching the winding means to a gripping state for gripping the web and a gripping release state for releasing the web and allowing the web to pass, and the end side of the web being detected Gripping switching control means for controlling the gripping switching mechanism so that the winding means in the gripping release state is switched to the gripping state when passing through the means, and the cutting control means includes the winding means It is preferable that the web is cut by driving the cutting means after switching to the gripping state.

  Further, a pair of rollers that are driven and rotated while sandwiching the running web is provided on the upstream side in the web conveyance direction of the winding means, and the detection means is provided on the upstream side in the web conveyance direction of the pair of rollers. It is preferable to detect the passage of the web while traveling. Furthermore, the roller switching mechanism capable of switching the pair of rollers to a clamping state in which the web is clamped and a clamping release state in which the web is released, and a remaining length of the web remaining in the web coil are detected. Based on the remaining length detection means and the remaining length detection result of the remaining length detection means, when the remaining length of the web exceeds a predetermined length, the pair of rollers are switched to the nipping release state, and the remaining length of the web is It is preferable that a roller switching control unit that controls the roller switching mechanism to switch the pair of rollers to the sandwiched state when the length is less than a predetermined length.

  The web switching means includes a feed control means for controlling the web feed means so that the web feed is stopped when the end edge of the web passes the detection means, and the grip switching control means is configured to feed the web. It is preferable to switch the winding means from the grip release state to the grip state after the stop is stopped. Moreover, it has a tape sticking means which affixes an adhesive tape on the surrounding surface of the web remaining volume which wound the remainder of the said web with the said winding means, and fixes the edge of this web remaining volume to a remaining volume surrounding surface. Is preferred. Furthermore, it is preferable to provide a discharging means for discharging the remaining web web, the end of which is fixed to the remaining circumferential surface by the adhesive tape, to the outside of the apparatus.

  Also, a coil holding member in which a plurality of the web coils are set, and a leading end portion of the succeeding web drawn out from the next web coil by the web feeding means at the trailing end portion of the preceding web cut by the cutting means. It is preferable to provide a joining means for joining. Moreover, it is preferable that the said winding means is comprised from a pair of winding chuck | zipper which can hold | grip and rotate the both-ends part of the said web, and a motor which rotates a pair of said winding chuck | zipper.

  The web feeding device according to the present invention includes a web transport unit that pulls and transports a web from a web coil, a detection unit that detects passage of the web, a cutting unit that cuts the web, and a terminal end of the web that is detected Since the cutting control means for driving the cutting means to cut the web when passing the means, and the winding means for gripping and winding up the remainder of the web cut by the cutting means. The remaining length of the web remaining after the web cutting can be shortened. Moreover, since it can collect | recover in the state isolate | separated from the remainder of the said web and the core of the said web coil, the effort which isolate | separates a web from a core separately can be saved.

  A grip switching mechanism capable of switching the winding means between a gripping state for gripping the web and a grip releasing state for releasing the gripping of the web; and when the trailing edge of the web passes the detection means, Gripping switching control means for switching the gripping means to the gripping state, and the web is cut by the cutting means after the winding means is switched to the gripping state. It can be gripped.

  In addition, since the pair of rollers that follow and rotate while sandwiching the traveling web is provided on the upstream side of the winding unit in the web conveyance direction, the incident angle of the web with respect to the winding unit can be made constant. it can. Thereby, even if the end side of the web is separated from the core, the web can be securely gripped.

  A roller switching mechanism capable of switching the pair of rollers between a nipping state and a nipping release state; a remaining length detecting means for detecting a remaining length of the web remaining in the web coil; and a remaining length of the web of a predetermined length. A roller that controls the roller switching mechanism to switch the pair of rollers to the nipping state when the remaining length of the web falls below a predetermined length. Since the switching control means is provided, the web can be reliably gripped in the same manner. In addition, it is possible to suppress the web from being scratched and foreign matter adhering due to contact with the pair of rollers.

  Further, the web feeding means is controlled so that the feeding of the web is stopped when the end side of the web passes the detecting means, and the winding means is held after the feeding of the web is stopped. Since the state is switched from the released state to the gripping state, the web can be securely gripped.

  Further, since the adhesive tape is attached to the peripheral surface of the remaining web wound by the take-up chuck and the end of the remaining web is fixed to the remaining peripheral surface, the remaining web is wound. Unraveling is prevented.

  In addition, since the web remaining roll fixed by the adhesive tape is provided with discharge means for discharging the web remaining roll to the outside of the apparatus, it is possible to save the operator from having to discard the web remaining roll.

  Further, since the coil holding member in which a plurality of the web coils are set and the joining means for joining the leading end portion of the subsequent web to the trailing end portion of the preceding web cut by the cutting means, The web can be sent out continuously.

  In addition, since the winding means is composed of a winding chuck that can be switched between the gripping state and the grip releasing state by the grip switching mechanism, and a motor that rotates the winding chuck, similarly, a complicated mechanism The rest of the web can be gripped and wound up without using.

  FIG. 1 shows an embodiment of the present invention, which is arranged in the uppermost stream of a production line such as a photographic photosensitive material, a magnetic recording material, and a photosensitive lithographic printing plate, and a web 9 such as a thin metal plate, paper, film, etc. FIG. 1 is a schematic view of a web sending apparatus 10 that sends a web page. The web feeding device 10 is roughly composed of a biaxial turret type web feeding unit 13, a web joining unit 14, and a web winding unit 15 embodying the present invention. The web 9b is continuously fed to the production line by joining the leading ends of the web 9b.

  The web feed unit 13 includes a biaxial turret arm 17, a holding base 18 that rotatably holds the turret arm 17, and coil rotation shafts 19 a and 19 b provided at both ends of the turret arm 17. On the coil rotating shafts 19a and 19b, web coils 22a and 22b obtained by winding the webs 9a and 9b in a coil shape are set on the winding cores 21a and 21b, respectively. The coil rotation shafts 19a and 19b are rotationally driven by a web feed motor 24, respectively. When the coil rotation shafts 19a and 19b are rotationally driven in the clockwise direction in the figure, the webs 9a and 9b are pulled out from the web coils 22a and 22b and fed out toward the web joining portion 14.

  The turret arm 17 is intermittently rotated by 180 ° via a drive transmission mechanism and a motor (not shown). As a result, the web coils 22a and 22b set on the turret arm 17 are alternately moved to the feed position for feeding the web 9 and the standby position, respectively. In FIG. 1, the web coil 22a is set at the delivery position, and the web coil 22b is set at the standby position. When the feeding of the web 9a from the web coil 22a is completed, the turret arm 17 is intermittently rotated clockwise in the figure to set the winding core 21a at the standby position and the web coil 22b is set at the feeding position. . Thereafter, the core 21a is removed from the coil rotating shaft 19a, and a new web coil 22a is set.

  The web joining portion 14 includes a tip holding unit 25 that holds the tip of the web 9b drawn out from the waiting web coil 22b, a joining unit 26 that is disposed along the web conveyance path that is sent out from the web coil 22a, and It comprises a suction drum mechanism 27, a plurality of pass rollers 28 arranged on the transport path, and a joint body 29 to which these members are attached.

  The tip holding unit 25 includes a holder 31 that holds the tip of the subsequent web 9 b, and a movable arm 32 that is rotatably attached to the joint main body 29 and holds the holder 31. A motor (not shown) is connected to the rotating shaft of the moving arm 32, and when moving, the moving arm 32 is rotated so that the cage 31 faces the bonding unit 26 from a predetermined bonding standby position (indicated by a solid line in the figure). Move to the welding preparation position (indicated by the dotted line in the figure). Although not shown, the retainer 31 includes a pair of conveyance rollers. When the cage 31 is conveyed to the joining preparation position, the web 9b is sent out toward the joining unit 26.

  The joining unit 26 is provided on the web conveyance path, and joins the cutter 33 that cuts the preceding web 9a at a predetermined position and the leading end of the succeeding web 9b fed from the retainer 31 to the rear end of the web 9a. It is comprised from the junction device 34. As the joining device 34, various joining devices such as an ultrasonic joining device and an adhesive tape applicator can be used as long as the webs 9a and 9b can be joined together.

  The suction drum mechanism 27 rotates while adsorbing the web 9a delivered from the web delivery unit 13, and sends out the web 9 toward a production line (not shown) on the downstream side in the web conveyance direction. Note that the present invention is not limited to the suction drum mechanism 27. If the web 9a can be sent out toward the production line on the downstream side in the transport direction, for example, a pair of transport rollers is used instead of the suction drum mechanism 27. Also good.

  In this way, the web 9 can be continuously fed by joining the leading end of the next web 9b to the rear end of the preceding web 9a, but the web 9a is cut by the cutter 33 during this joining. For this reason, the web 9a remains on the core 21a side of the web coil 22a. The web 9a remaining on the core 21a side is discarded as a loss, but the remaining web 9a (hereinafter referred to as the discard web 36 (see FIGS. 7 and 8)) is wound around the core 21a again. In order to discard the web, it is necessary to ensure the remaining length of the web 9a of the web coil 22a to be equal to or longer than a certain length. Further, since it is necessary to separate the wound waste web 36 from the core 21a, this separation work takes time.

  Therefore, in the present embodiment, the waste web 36 is wound by the web winder 15 so that the length of the waste web 36 is shortened and the separation work of the waste web 36 and the core 21a can be abolished. The web winding unit 15 includes a nip roller 38 and a receiving roller 39 that are driven to rotate while sandwiching the web 9a fed from the web feeding unit 13 toward the web joining unit 14, and a first holding that rotatably holds the nip roller 38. The unit 42, the second holding unit 43 that rotatably holds the receiving roller 39, and the first holding unit 42 that are held in the first holding unit 42 and rotated while gripping the both end portions of the web 9 a fed from both the rollers 38 and 39. A pair of winding chucks 44 a and 44 b, a guide plate 45 attached to the joint main body 29, a shift mechanism 46 that slides the first holding unit 42 along the guide plate 45, and a guide plate 45. The attached tape adhering unit 47 and a discharge mechanism 48 for discharging the wound waste web 36 (remaining volume 67). It is.

  As shown in FIGS. 1 and 2, the rollers 38 and 39 are held by the first and second holding units 42 and 43 so as to face each other across the conveyance path of the web 9a. The first holding unit 42 includes roller holding portions 50a and 50b that rotatably hold both end portions of the rotation shaft of the nip roller 38, a bar-shaped connection portion 51 that connects both roller holding portions 50a and 50b, and a winding. Chuck holding portions 52a and 52b that hold the take-off chucks 44a and 44b and an engaging portion 53 that engages with a guide groove 45a formed in the guide plate 45 are integrally formed.

  The first holding unit 42 is slidably attached to the guide plate 45 by engaging the engaging portion 53 with the guide groove 45a. The shift mechanism 46 is composed of a cam, a solenoid, and the like, and the first holding unit 42 is positioned between the nip roller 38 and the receiving roller 39 to hold the web 9a (see FIGS. 1, 6, and 7). The nip roller 38 is moved away from the web 9a to a nipping release position (see FIG. 4) that forms a gap with the receiving roller 38. In addition, although mentioned later in detail, the 1st holding | maintenance unit 42 is moved to the clamping position only at the time of the winding start of the waste web 36, and is moved to the clamping cancellation | release position during normal conveyance or turret arm 17 rotation.

  Here, the first holding unit 42 in the nipping release position is retracted to a position that does not hinder the rotation of the turret arm 17. Therefore, in this embodiment, before the winding of the waste web 36 is started, the first holding unit 42 is moved to the standby position (see FIG. 5) between the clamping position and the clamping release position by the shift mechanism 46. deep. Thereby, the 1st holding | maintenance unit 42 can be moved to a clamping position in a short time.

  The second holding unit 43 includes a roller holding portion 55 that rotatably holds both ends of the rotation shaft of the receiving roller 39, and a roller retraction mechanism 56 that retreats the receiving roller 39 and the roller holding portion 55 when the turret arm 17 rotates. Consists of Although the position where this roller holding part 55 is arrange | positioned is not specifically limited, it arrange | positions in the position which does not contact | connect the web 9a sent out from the fully wound web coil 22a. Thereby, when the 1st holding | maintenance unit 42 exists in a clamping release position or a standby position, contact with both the rollers 38 and 39 and the web 9a is prevented. As a result, it is possible to suppress the web 9a from being scratched by the rollers 38 and 39 and the occurrence of foreign matter during normal conveyance.

  The roller retracting mechanism 56 includes, for example, a rotating shaft 57 provided at a side end portion of the roller holding portion 55 and a motor 58 connected to the rotating shaft. When the turret arm 17 rotates, the roller holding portion 55 is rotated around the rotation shaft 57, and the receiving roller 39 and the roller holding portion 55 are retracted to a position where the movement of the turret arm 17 is not hindered.

  As the winding chucks 44a and 44b, for example, commercially available parallel open / close air chucks are used. Both chucks 44 a and 44 b are rotatably held by chuck holding members 52 a and 52 b, and are moved together in accordance with the movement of the first holding unit 42. And in this embodiment, when the 1st holding | maintenance unit 42 exists in a roll clamping position, so that the winding chucks 44a and 44b can hold | grip the side edge part of the web 9a sent out between both rollers 38 and 39, The mounting position of the chuck and the shapes of the chuck holding members 52a and 52b are adjusted.

  The winding chucks 44a and 44b, which are air chucks, have two air ports (not shown), and an air blower 60, which is a high-pressure air source, is connected to each air port via an air joint (not shown). . The air blower 60 corresponds to the grip switching mechanism of the present invention. When high-pressure air is sent from the air blower 60 to one air port, the chuck is closed and the take-up chuck 44a is brought into a gripping state in which the web side end is gripped. , 44b are switched. When high pressure air is sent from the air blower 60 to the other air port, the chuck opens, the web side end is released from gripping, and the take-up chucks 44a and 44b are switched to a gripping release state in which passage of the web 9a is allowed. It is done.

  The chuck holding members 52a and 52b are attached to the roller holding portions 50a and 50b integrally with the holding portion main body 62, and are slidably attached to the holding portion main body 62 in the web width direction. And a slide portion 63 that rotatably holds the. The chuck holding members 52a and 52b are connected to a chuck retracting mechanism 64 made of, for example, a cam or a solenoid. When the first holding unit 42 is moved to the holding position, the chuck retracting mechanism 64 retracts the take-up chucks 44a and 44b to the chuck retracting position away from the side end portion of the running web 9a. This prevents the take-up chucks 44a and 44b from being caught on the running web 9a when the first holding unit 42 is moved. And if the 1st holding | maintenance unit 42 is moved to the clamping position, the winding chucks 44a and 44b will be moved to the holding | grip standby position which can hold | grip a web side edge part.

  A chuck rotation motor 65 is connected to the take-up chucks 44a and 44b via a drive transmission mechanism (not shown), and the take-up chucks 44a and 44b are rotated about a rotation axis parallel to the width direction of the web 9a. Can be made. As a result, the web 9a (the waste web 36) gripped by the take-up chucks 44a and 44b can be taken up in a substantially cylindrical shape.

  When winding the waste web 36, the shift mechanism 46 is driven to move the first holding unit 42 to the roll clamping position. At this time, the chuck retracting mechanism 64 is driven to move the take-up chucks 44a and 44b to the chuck retracting position. Then, after the movement of the first holding unit 42 is finished, the winding chucks 44a and 44b are moved to the grip standby position, and the air blower 60 is controlled to switch the winding chucks 44a and 44b to the gripping state. Next, the waste web 36 can be taken up by driving the chuck rotating motor 65 to rotate the take-up chucks 44a and 44b.

  The tape affixing unit 47 affixes an adhesive tape 68 to the peripheral surface of the remaining volume 67 (see FIG. 9) in which the waste web 46 is wound in a substantially cylindrical shape by the winding chucks 44a and 44b. Fix the side to the remaining winding surface. The tape attaching unit 47 includes an adhesive tape roll 69 obtained by winding the adhesive tape 68 into a roll shape, a cutter 70, an adsorption roller 71, and an attaching unit main body 72 that holds these. The adhesive tape roll 69 and the tape suction roller 68 are rotationally driven by a feed motor (not shown).

  The suction roller 71 is held at a position where the suction roller 71 can come into contact with the circumferential surface of the wound-up remaining winding 67 when the first holding unit 42 is moved to the nipping release position. Accordingly, when the first holding unit 42 is moved to the nipping release position after the winding of the waste web 36 is started, the adhesive tape 68 is sent out from the adhesive tape roll 69 to the suction roller 71. The suction roller 71 rotates while sucking the adhesive tape 68, and releases the suction of the adhesive tape 68 at a position in contact with the peripheral surface of the remaining volume 67. As a result, the adhesive tape 68 is attached to the peripheral surface of the remaining volume 67. When the application of the adhesive tape 68 is completed, the cutter 70 is operated to cut the adhesive tape 68. The remaining adhesive tape 68 is held by a cage (not shown), and is sent out toward the suction roller 71 again when the next adhesive tape is applied.

  Since the end side of the remaining volume 67 is fixed to the remaining volume peripheral surface by the adhesive tape 68, the remaining volume 67 is prevented from unwinding. The remaining winding 67, that is, the final winding portion of the web coil 22a, is not a product because it often has streak marks due to a step formed when the end portion of the web 9a is wound around the core 21a. . When the adhesive tape 68 is applied, the remaining volume 67 is discharged out of the apparatus by the discharge mechanism 48 and then discarded. The tape affixing unit 47 is not limited to the one described above as long as the adhesive tape 68 can be affixed to the peripheral surface of the remaining volume 67.

  The discharge mechanism 48 includes a through hole 45b (see FIGS. 1 and 9) formed in the center in the width direction of the guide plate 45, and a shooter (see FIG. 1 and FIG. 9) attached so as to cross the guide plate 45 through the through hole 45b. Guide plate) 48a and a delivery conveyor 48b connected to a discharge port (not shown). The mounting position and length of the shooter 48a are adjusted so as not to hinder the movement of the first holding unit 47, and one end of the shooter 48a extends to a position below the suction roller 71 and the other end extends to the delivery conveyor 48b. Then, when the end of the remaining winding 67 is fixed to the remaining winding peripheral surface by the adhesive tape 68 and the adhesive tape 68 is cut by the cutter 70, the take-up chucks 44a and 44b are switched to the gripping release state and are moved to the chuck retracted position. Move. Thereby, the remaining volume 67 falls to the shooter 48a. The remaining volume 67 that has fallen on the shooter 48a moves on the delivery conveyor 48b along the shooter 48a. The delivery conveyor 48b operates simultaneously with the take-up chucks 44a and 44b being moved to the chuck retracted position, and discharges the remaining winding 67 from a discharge port (not shown). Thereby, since the remaining volume 67 can be automatically discharged out of the apparatus, it is possible to save the operator from having to discard the remaining volume 67.

  As shown in FIG. 3, the driving of these units and units is controlled by the overall control unit 70. The overall control unit 70 includes a shift control unit 70a, a sending control unit 70b, a blower control unit 70c, a cutter control unit 70d, a winding control unit 70e, and the like, and controls the operation of each unit of the web sending device 10. The overall control unit 70 includes the web feed motor 24, the joining unit 26, the shift mechanism 46, the tape attaching unit 47, the roller retracting mechanism 56, the air blower 60, the chuck retracting mechanism 64, and the chuck rotating motor 65, A drum drive mechanism 73 that controls the drive of the suction drum mechanism 27, a remaining length calculation unit 74, a reflective optical sensor 75, and the like are connected. Although not shown, a drive mechanism for driving the turret arm 17 and the tip holding unit 25 is also connected.

  The shift control unit 70a controls the driving of the shift mechanism 46 to move the first holding unit 42 in the cycle of the above-described sandwich release position, standby position, sandwich position, and sandwich position release position. The feeding control unit 70b controls driving of the web feeding motor 24 and the drum driving mechanism 73 to control feeding / stopping of the web 9a (9b) from the web coil 22a (22b). The blower control unit 70c controls the blower 60 to switch the take-up chucks 44a and 44b between a gripping state and a grip releasing state. The cutter control unit 70d controls the operation of the cutter 33. The winding control unit 70e controls the chuck rotation motor 65 to control the rotation / rotation stop of the winding chuck.

  A pulse generator (hereinafter simply referred to as PG) 77 (see FIG. 1) is connected to the remaining length calculation unit 74, and the same applies to the web coil 22a (22b) set at the transmission position based on the pulse signal sent from the PG 77. ) Of the web 9a (hereinafter simply referred to as the remaining length). The PG 77 is connected to the coil rotation shaft 19a (19b), and converts the rotation of the coil rotation shaft 19a (web coil 22a) into a pulse signal. The remaining length calculation unit 74 calculates the remaining length of the web coil 22 a by counting the number of pulses of the input pulse signal, and inputs the calculation result to the overall control unit 70.

  The reflection type optical sensor 75 includes a light emitting element and a light receiving element. The reflective optical sensor 75 is attached to the roller holding part 50 a of the first holding unit 42. The attachment position of the reflection type optical sensor 75 is not particularly limited, but when the first holding unit 42 is in the clamping position, the inspection light is applied to the web a traveling on the upstream side in the web conveyance direction of both rollers 38 and 39. It is attached at a position where irradiation is possible (see FIGS. 1 and 7).

  In the present embodiment, the reflecting plates 76 a and 76 b are attached to the turret arm 17. The reflection plate 76a is provided at a position where the inspection light emitted from the reflection type optical sensor 75 at the clamping position can be reflected to the light receiving element of the sensor 75 when the web coil 22a is set at the delivery position (see FIG. 7). Similarly, the reflecting plate 76b is provided at a position where the inspection light can be reflected to the light receiving element when the web coil 22b is set at the sending position.

  Therefore, when the end side of the web 9a is separated from the winding core 21a of the web coil 22a and the end side of the separated web 9a passes between the reflection type optical sensor 75 and the reflection plate 76a, the light receiving element of the sensor 75 receives light. The state changes. The end-side passage detection signal detected by the reflective optical sensor 75 is sent to the overall control unit 70. As a result, the overall control unit 70 can detect the passage of the end side of the web 9a traveling on the upstream side in the web conveyance direction of the rollers 38 and 39.

  Next, the winding operation of the waste web 36 in this embodiment will be described. As shown in FIG. 4, the overall control unit 70 is based on the remaining length calculation result of the web coil 22a input from the remaining length calculation unit 74 until the remaining length of the web coil 22a falls below a predetermined value (for example, about 100 m). The first holding unit 42 is held at the nipping release position. As shown in FIG. 5, when the remaining length of the web coil 22a is less than about 100 m, the shift control unit 70a drives the shift mechanism 46 to move the first holding unit 42 in the nipping release position to the standby position. Let

  Next, when the remaining length of the web coil 22a falls below a predetermined value (for example, about 20 m), the feed control unit 70b controls the suction drum mechanism 27 and the web feed motor 24 to stop the feed (conveyance) of the web 9a. . When the feeding of the web 9a is stopped, as shown in FIG. 6, the shift control unit 70a drives the shift mechanism 46 to move the first holding unit 42 to the clamping position, and the nip roller 38 and the receiving roller 39 The web 9a is clamped. At this time, the chuck retracting mechanism 64 is driven to move the take-up chucks 44a and 44b to the chuck retract position, and when the first holding unit 42 is moved to the clamping position, the take-up chucks 44a and 44b are gripped. Move to the standby position. If the 1st holding | maintenance unit 42 is moved to the clamping position, the sending control part 70b will resume sending the web 9a. Then, the detection (search) of the end side of the web 9a is started using the reflective optical sensor 75.

  As shown in FIG. 7, when the end side of the web 9a is separated from the core 21a, and the passage of the end side is detected by the reflection type optical sensor 75, the feed control unit 70b includes the suction drum mechanism 27 and the web feed motor. 19a is controlled and the sending of the web 9a is stopped. Next, the blower control unit 70c operates the air blower 60 to switch the take-up chucks 44a and 44b to the gripping state so as to grip both side ends of the web 9a (the waste web 36). At this time, the exit angle of the web 9a fed from the web coil 22a toward the web sending unit 14 changes as the remaining length (winding diameter) of the web coil 22a decreases. 9 a is sandwiched between the nip roller 38 and the receiving roller 39. Therefore, the incident angle of the web 22a with respect to the take-up chucks 44a and 44b can be made constant. Thereby, even if the terminal side of the web 9a is separated from the core 21a, the web 9a can be reliably held by the take-up chucks 44a and 44b. Further, since the web 9a does not loosen between the rollers 38 and 39 and the web joining portion 14, the web 9a can be reliably gripped in the same manner.

  When the winding chucks 44a and 44b are switched to the gripping state, the cutting controller 70d operates the cutter 33 of the joining unit 26 to cut the film 9a. At this time, the web 9a held by the take-up chucks 44a and 44b becomes the waste web 36.

  As shown in FIG. 8, when the web 9a is cut, the winding control unit 70e drives the chuck rotation motor 65 to rotate the winding chucks 44a and 44b, and starts winding the waste web 36. At the same time, the shift control unit 70a drives the shift mechanism 46 to move the first holding unit 42 from the clamping position to the clamping release position.

  Then, as shown in FIG. 9, when the first holding unit 42 is moved to the clamping release position, the overall control unit 70 operates the tape adhering unit 47 and the remaining winding wound around the winding chucks 44a and 44b. Adhesive tape 68 is attached to the peripheral surface of 67. Thereby, unwinding of the remaining volume 67 is prevented. The remaining volume 67 is discharged out of the apparatus by the discharge mechanism 48 and then discarded.

  As described above, according to the present embodiment, the nip roller 38, the receiving roller 39, and the like are disposed on the conveyance path of the web 9 fed from the web feeding unit 13 toward the web joining unit 14. Since the web take-up portion 15 constituted by the take-up chucks 44a, 44b and the like is provided, the web 9a is cut after the end side of the web 9a is separated from the winding core 21a, and the waste web 36 formed after this cutting is cut. Can be wound up.

  Next, the operation of the present embodiment will be described using the flowchart of FIG. When the feeding of the web 9a from the web coil 22a set at the feeding position is started, the overall control unit 70 detects the remaining length of the web coil 22a based on the remaining length calculation result of the web coil 22a by the remaining length calculating unit 74. (See FIG. 4). When the remaining length of the web coil 22a falls below about 100 m, the shift control unit 70a of the overall control unit 70 drives the shift mechanism 46 to move the first holding unit 42 to the standby position (see FIG. 5).

  Next, when the remaining length of the web coil 22a falls below about 20 m, the feeding control unit 70b controls the suction drum mechanism 27 and the web feeding motor 19a to stop the feeding of the web 9a, and then drives the shift mechanism 46. Then, the first holding unit 42 is moved to the clamping position (see FIG. 6). At this time, the overall control unit 70 moves the take-up chucks 44a and 44b to the chuck retracted position until the first holding unit 42 is moved to the clamping position.

  If the 1st holding | maintenance unit 42 is moved to the clamping position, the sending control part 70b will resume sending the web 9a. Then, when the reflection type optical sensor 75 detects the passage of the end side of the web 9a separated from the core 21a, the sending control unit 70b stops the conveyance of the web 9a. Next, the blower control unit 70c operates the air blower 60 and grips both end portions of the web 9a by the take-up chucks 44a and 44b. When the both side ends of the web 9a are gripped, the cutter controller 70d operates the cutter 33 of the joining unit 26 to cut the web 9a (see FIG. 7).

  When the web 9a is cut, the winding control unit 70e drives the chuck rotating motor 65 to rotate the winding chucks 44a and 44b, starts winding the waste web 36, and drives the shift mechanism 46. The first holding unit 42 is moved from the clamping position to the clamping release position (see FIG. 8). When the first holding unit 42 is moved to the nipping release position, the overall control unit 70 operates the tape adhering unit 47 to apply the adhesive tape 68 to the peripheral surface of the remaining volume 67 so that the remaining volume 67 is not unwound. (See FIG. 9). The remaining volume 67 is discharged out of the apparatus by the discharge mechanism 48 and then discarded.

  Further, the overall control unit 70 rotates the moving arm 32 of the tip holding unit 25 and holds the tip of the web 9b at the same time when the first holding unit 42 is moved to the clamping release position. 31 is moved from the joining standby position to the joining preparation position (see FIG. 1). Next, the overall control unit 70 sends out the tip of the web 9 b from the holder 31 toward the joining unit 26. When the leading end portion of the web 9b is conveyed to the joining device 34, the overall control unit 70 operates the joining device 34 to join the trailing end portion of the preceding web 9a and the leading end portion of the succeeding web 9b.

  When the joining of the webs 9a and 9b is completed, the overall control unit 70 drives the roller retracting mechanism to retract the receiving roller 39, and then intermittently rotates the turret arm 17 180 ° clockwise in FIG. The web coil 22b is set at the delivery position. Further, the empty winding core 21a is removed from the coil rotating shaft 19a by the operator, and a new web coil 22a is set. Then, as shown in FIG. 11, when the web coil 22b is set to the delivery position, the overall control unit 70 controls the suction drum mechanism 27 and the web delivery motor 19a to start feeding the web 9b. Hereinafter, the above-described operation may be repeated until the sending of the web 9 is stopped.

  According to the present embodiment, after the terminal side of the web 9a is separated from the core 21a, the side ends of the web 9a are gripped by the take-up chucks 44a and 44b, and the web 9a is cut by the cutter 33. Since the waste web 36 formed after cutting the web 9a is wound up by the take-up chucks 44a and 44b, the length of the waste web 36 can be shortened. Further, since the waste web 36 can be collected in a state separated from the core 21a, it is possible to save the trouble of separately separating the waste web 36 from the core 21a.

  In this embodiment, air chucks are used as the take-up chucks 44a and 44b. However, the present invention is not limited to this, and various take-up chucks that can grip both side ends of the web 9 are used. May be used. Further, the present invention is not limited to the take-up chuck, and a take-up mechanism other than the take-up chuck may be used as long as it can be rotated by gripping both end portions of the web 9. For example, instead of the take-up chuck, a conveyance roller pair that can be switched between a nipping state and a nipping release state is arranged, and the web 9a may be wound by rotating the conveyance roller pair.

  Moreover, in this embodiment, the adhesive tape 68 is affixed on the surrounding surface of the remaining volume 67 by the tape sticking unit 47, and the end side of this remaining volume 67 is fixed to the remaining volume circumferential surface. Is not limited to this, and various fixing methods may be used as long as the remaining winding 67 can be fixed so as not to unwind.

  In the present embodiment, the remaining length of the web 9 of the web coils 22a and 22b is calculated based on the pulse signal sent from the PG 77 connected to the coil rotation shafts 19a and 19b. However, the present invention is not limited to this. Any method may be used as long as the remaining lengths of the web coils 22a and 22b can be calculated. For example, the remaining length of the web 9a may be calculated by counting the number of drive pulse signals sent to the web feed motor 24a.

  In addition, although the web sending part 13 of the web sending apparatus 10 of this embodiment demonstrated the thing of the biaxial turret system as an example, this invention is not limited to this, 1 axis | shaft or 3 axis | shafts The present invention can be applied to a web sending device including the above sending unit.

It is the schematic which showed an example of the web sending apparatus of this invention. It is the perspective view which showed the web winding part of the web sending apparatus. It is the block diagram which showed the electric constitution of the web sending apparatus. It is the figure which showed the schematic when a web winding part is shown, and the remaining length of a web coil is longer than about 100 m. It is the figure which showed the schematic when a web winding part is shown, and the remaining length of a web coil is less than about 100 m. It is the figure which showed the schematic when a web winding part is shown, and the state when the remaining length of a web coil is less than about 20 m. It is the figure which showed the schematic when a web winding part is shown, and showed the state when passage of the termination | terminus side of a web was detected with the reflection type optical sensor. It is the figure which showed the schematic when a web winding part is shown, and started the winding of a waste web. It is the figure which showed the schematic of a web winding part, and the state after winding-up of a waste web. It is the flowchart which showed the web transmission process of a web transmission apparatus. It is the figure which showed the schematic of a web winding part, and showed the state after web joining.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 Web 10 Web sending apparatus 13 Web sending part 14 Web joining part 15 Web winding part 22a, 22b Web coil 33 Cutter 36 Waste web 38 Nip roller 39 Receiving roller 44a, 44b Winding chuck 47 Tape sticking unit 70 Overall control part

Claims (9)

Web sending means for pulling out and sending the web from the web coil;
A detecting means provided on the downstream side of the web coil in the web conveying direction, for detecting the passage of the web;
Cutting means provided on the downstream side of the detection means in the web conveying direction, for cutting the web;
Cutting control means for driving the cutting means to cut the web when the end side of the web spaced apart from the core of the web coil passes through the detection means;
A web delivery apparatus comprising: a winding unit provided on a web conveyance path between the detection unit and the cutting unit, and a winding unit that grips and winds the remainder of the web cut by the cutting unit. A gripping switching mechanism capable of switching the winding means to a gripping state for gripping the web, and a gripping release state for releasing the web and allowing the web to pass;
Gripping switching control means for controlling the gripping switching mechanism so that the winding means in the gripping release state is switched to the gripping state when the end side of the web passes through the detection means;
The web cutting device according to claim 1, wherein the cutting control means drives the cutting means after the winding means is switched to the gripping state to cut the web. On the upstream side of the winding means in the web conveyance direction, a pair of rollers that are driven and rotated while pinching the running web are provided,
3. The web feeding device according to claim 1, wherein the detection unit detects passage of the web traveling on the upstream side in the web conveyance direction of the pair of rollers. A roller switching mechanism capable of switching the pair of rollers to a clamping state in which the web is clamped and a clamping release state in which the web is released from being clamped;
A remaining length detecting means for detecting a remaining length of the web remaining in the web coil;
Based on the remaining length detection result of the remaining length detecting means, when the remaining length of the web exceeds a predetermined length, the pair of rollers is switched to the nipping release state, and when the remaining length of the web falls below a predetermined length The web feeding device according to claim 3, further comprising: a roller switching control unit that controls the roller switching mechanism so as to switch the pair of rollers to the sandwiched state. A feed control means for controlling the web feed means so that the web feed is stopped when the end edge of the web passes through the detection means;
5. The web feeding device according to claim 2, wherein the grip switching control unit switches the winding unit from the grip releasing state to the gripping state after the web feeding is stopped. 6. .   Adhesive tape is affixed to the peripheral surface of the web remaining winding which wound up the remainder of the web with the winding means, and tape pasting means for fixing the edge of the web remaining winding to the remaining winding peripheral surface is provided. The web sending device according to any one of claims 1 to 5.   The web feeding device according to claim 6, further comprising: a discharging unit that discharges the remaining web, the end of which is fixed to the remaining circumferential surface by the adhesive tape, to the outside of the device. A coil holding member on which a plurality of the web coils are set;
The joining means for joining the leading end portion of the succeeding web drawn out from the next web coil by the web feeding means to the trailing end portion of the preceding web cut by the cutting means. The web sending device according to any one of claims 7 to 9. The winding means
A pair of winding chucks capable of gripping and rotating both side edges of the web;
The web feeding device according to claim 1, comprising a motor that rotates the pair of winding chucks.

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