JP6100860B1 - Web splicing method and web splicing device - Google Patents

Abstract

A butt joint and a lap joint between a preceding web and a succeeding web are performed with high accuracy in a short time with a simple configuration and operation. A web holding unit 2 including a front holding portion 2a, a rear holding portion 2b, and an oblique holding portion 2c is provided below a conveyance path of a preceding web W1, and a presser bonding roller 5 and a cutting blade 60 are provided above the conveyance path. And the cutting unit 6 provided with the pressing body 61 is provided. The succeeding web W2 is set so as to cover the web holding unit 2 at a position away from the conveyance path, and is brought into contact with the preceding web W1 by the related operations of the subsequent web holding unit 2, the presser joining roller 5, and the cutting unit 6. It is spliced or lap spliced. [Selection] Figure 1

Description

  The present invention relates to a web joining method for joining a web such as a laminate sheet in the middle of a conveying path, and a web joining device used for carrying out this method.

  A web such as a laminate sheet is finished into various products through processing steps such as coating and coating. The web is supplied in a state of being wound around a roll, continuously pulled out from the roll, and sent to a processing step through a predetermined conveyance path. At this time, it is necessary to join the front end of the web (following web) newly drawn from the roll to the end of the web (previous web) being transported first.

  This joining is performed by a procedure in which the conveyance of the preceding web is stopped and the end of the preceding web and the leading end of the succeeding web are joined using a joining tape. Patent Documents 1 and 2 disclose a method and an apparatus that can automatically perform web splicing in the above procedure.

  In the methods disclosed in Patent Documents 1 and 2, the trailing portion of the preceding web is overlapped with the leading portion of the succeeding web, and the overlapping portions are provided on both sides of the transport path with a gap in the front and rear in the transport direction. After the preceding web and the succeeding web are collectively cut by the cutting blade that is sandwiched between each pair of web retaining portions and operates within the gap between the web retaining portions on one side, the rear side of the preceding web and the front side of the succeeding web A method in which an unnecessary portion of the tape is removed, the cut end is butted, and the bonding tape held by the tape holding portion is pressed to the other side of the butting portion while maintaining the holding of the web holding portion on one side, and the bonding tape is used for bonding It is.

  Further, when double-sided bonding is required, the holding by the web holding portion on one side is released, and the bonding tape held on the same side as the other side is pressed on the same side. This pressing is performed under the support of the tape holding unit while maintaining the pressing of the tape holding unit on the other side. In Patent Document 2, the work of pulling out the leading portion of the succeeding web from the roll and setting it on the corresponding web holding portion is also automated.

Japanese Patent No. 2881646 Japanese Patent No. 4886598

  According to the methods and apparatuses described in Patent Documents 1 and 2, web splicing can be performed automatically. On the other hand, the web holding unit and the tape holding unit arranged on both sides of the conveyance path move toward and away from the conveyance path at a preparation position facing the abutting part of the preceding web and the succeeding web. Must be moved to a standby position away from the butting portion. In Patent Documents 1 and 2, the web holding part and the tape holding part on both sides of the transport path are supported by a common support base, and the support base is moved back and forth or rotated to move between the preparation position and the standby position. There is a problem that the configuration of the apparatus including the web holding unit and the tape holding unit is complicated, and it takes time to join the webs performed by combining these operations.

  In particular, if the web transport destination is a processing step that requires continuous processing, a staying device that retains the web is provided between the splicing device and the transport destination, and stays during the splicing operation with transport pause. Continuous processing is possible by sending the web retained in the device to the processing process. However, if time is required for splicing, it will increase the size of the retaining device and increase the load. Shortening is important.

  In addition, the methods described in Patent Documents 1 and 2 are joints in which the end of the leading web and the leading edge of the succeeding web are butted and joined, so-called so-called butted seams. Depending on the processing content, the end portion of the preceding web and the leading end portion of the succeeding web are overlapped over an appropriate length, and the overlapping portion is joined using a double-sided adhesive tape, so-called lap joint may be required. There is a strong need for a method and apparatus that can accommodate both butt joints and lap joints.

  The present invention has been made in view of such circumstances, and the joining of the preceding web and the succeeding web can be performed with high accuracy in a short time with a simple configuration and operation. It is an object of the present invention to provide a web splicing method and a splicing device that can handle both splicing.

In the web splicing method according to the present invention, the leading end of the succeeding web is overlapped and joined to the end portion of the preceding web, and the joined web is continuously spliced to the transporting path to the transport path. In the method, while the preceding web is being transported, the succeeding web is held from the lower surface side by the front holding part and the rear holding part arranged in the front and rear in the transport direction at a position away from the transport path, and on the rear side of the rear holding part. A first step of holding in an inclined posture with the rear facing downward by the oblique holding portions arranged, and a subsequent web held by the front holding portion and the rear holding portion are cut between both holding portions, and the front holding portion side While removing unnecessary portions, the second step of sticking a double-sided adhesive tape along the cutting edge on the upper surface of the succeeding web on the rear holding portion side, and conveying the succeeding web held by the rear retaining portion Close the route and stop transportation A third step of joining the preceding web with the double-sided adhesive tape, and a presser roller that rolls the preceding web and the succeeding web that overlap on the rear side of the joining position to the rear holding portion and the upper surface of the preceding web. A fourth step of holding the web in between, and holding the preceding web continuous on the rear side of the clamping position at a position away from the succeeding web held by the oblique holding portion by a presser that contacts the upper surface; and A fifth step of cutting the preceding web by the operation of the cutting blade between the presser roller and the presser body and removing an unnecessary portion of the preceding web that continues to the rear side of the cutting position; and rolling the presser roller forward Press the sticking position with the double-sided bonding tape, strengthen the bonding with the double-sided bonding tape, then release the holding of the front holding part, the rear holding part and the diagonal holding part, and resume the conveyance of the preceding web, Characterized in that it comprises a sixth step for feeding the rows web after being joined in rows web on the transport path.

  In the present invention, the trailing web is held by the front holding part, the rear holding part and the diagonal holding part during the conveyance of the preceding web, and is cut between the front holding part and the rear holding part, and is not required on the front holding part side. The part is removed, and a pretreatment is performed until the double-sided tape is adhered along the cutting edge on the upper surface of the succeeding web remaining on the rear holding part side. Next, the front holding part and the rear holding part are brought close to the conveyance path, and the succeeding web held by the rear holding part is overlapped on the lower surface of the preceding web that has stopped conveyance, and is joined by the double-sided bonding tape, and the front side of the joining position The preceding web and the succeeding web that overlap with each other are sandwiched between the rear holding portion and the presser roller, and the preceding web on the rear side of the joint portion is held by the presser body at a position away from the succeeding web held by the oblique holding portion. Hold and cut by the action of the cutting blade between the presser roller and the presser body. After this, the presser roller rolls forward and presses against the double-sided bonding tape sticking position to strengthen the bonding, releases the holding by the front holding part, the rear holding part and the diagonal holding part and resumes the conveyance of the preceding web Then, the subsequent web joined to the preceding web is sent out to the conveyance path. The above procedures are as follows: up / down movement of the front holding part, rear holding part and oblique holding part on the lower surface side of the conveyance path, up / down movement of the pressing roller, cutting blade and pressing body on the upper surface side, and forward / backward movement of the pressing roller. Can be realized by a simple configuration and operation including the removal of unnecessary parts of the preceding web and the succeeding web, and the cutting of the succeeding web can be performed by removing unnecessary parts and double-sided bonding tape during the transport of the preceding web. Since the process is completed during the conveyance of the preceding web including the pasting, high-accuracy lap splicing can be realized in a short time.

  In the web splicing method according to the present invention, the joining roller is brought into rolling contact with the lower surface of the preceding web, which has been resumed, at a position before the front holding portion, and held on a part of the peripheral surface of the joining roller. The method further includes a seventh step of attaching the joining tape to the lower surfaces of the preceding web and the succeeding web across the cut end of the succeeding web.

  In the present invention. When the conveyance is resumed, the joining roller is rolled onto the lower surface of the preceding web, and the joining tape held by the joining roller is stuck across the cut end of the succeeding web. It is possible to prevent the obstruction of the conveyance due to the catching.

  The web splicing method according to the present invention is characterized in that the front holding portion, the rear holding portion, and the oblique holding portion hold the succeeding web by suction to the upper surface.

  The web splicing method according to the present invention is characterized in that the pressing body holds the preceding web by suction to the lower surface.

  The web splicing method according to the present invention is characterized in that the joining roller holds the joining tape by suction to a peripheral surface.

  In these inventions, the holding of the trailing web in the front holding portion, the rear holding portion and the oblique holding portion, the holding of the preceding web in the presser, and the holding of the bonding tape in the bonding roller are performed at an appropriate timing by stopping the suction. It can be released easily.

  The web splicing device according to the present invention is a web splicing device that joins the leading end portion of the succeeding web to the end portion of the preceding web, and continuously feeds the joined succeeding web to the transport path. A front holding part, a rear holding part and an oblique holding part, which are arranged side by side in the front and rear in the conveying direction on the lower side of the conveying path, and hold the trailing web on the upper surface facing the conveying path, the front holding part, An elevating support base that supports the rear holding portion and the oblique holding portion and moves up and down to move toward and away from the conveyance path, and a pressing roller, a cutting blade, and a presser arranged side by side in the conveyance direction above the conveyance path A body and the front roller, the cutting blade, and the presser body, and a front position between the front position where the pressure roller faces above the front holding part and a rear position where the pressure roller faces above the rear holding part. A moving support base to be moved; and For example rollers, and lowering the cutting blade and the holding member to each other, characterized in that it comprises a lifting actuator for move toward and away transport path.

  In the present invention, the butt splicing is performed by a combination of the operations of the front holding unit, the rear holding unit, and the diagonal holding unit on the lower side of the conveyance path, and the operations of the pressing roller, the cutting blade, and the pressing body on the upper side of the conveyance path. In addition, web splicing can be achieved with high accuracy in a short time by lap splicing.

  The web splicing device according to the present invention is disposed opposite to the lower side of the transport path at a position in front of the front holding portion, and holds a joining tape on a part of a peripheral surface to the transport path. The apparatus further comprises a joining roller that moves toward and away from the front and rolls onto the lower surface of the preceding web and the succeeding web when being approached to adhere the joining tape.

  In the present invention, by providing a joining roller that moves toward and away from the transport path at a position before the front holding portion, it is possible to realize a butt joint by double-sided joining and a lap joint including processing of a cut end. it can.

  According to the web splicing method and web splicing device according to the present invention, the splicing including cutting and joining of the end of the preceding web and the front end of the succeeding web can be performed in a short time with a simple configuration and operation. It is possible to perform with high accuracy.

It is a side view which shows schematic structure of the joining apparatus which concerns on embodiment. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the butt joint implemented by the joining apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is a procedure explanatory drawing of the lap joint implemented by the splicing apparatus shown in FIG. It is an enlarged view of the junction part of a preceding web and a succeeding web.

  Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof. FIG. 1 is a side view showing a schematic configuration of a splicing device according to an embodiment. In the following description, upper, lower, left, and right in the figure are used.

  The splicing device includes a web holding unit 2, a joining roller 3, a support roller 4, a press joining roller 5, and a cutting unit 6, which are described later on a support frame 10 that rises vertically from a substantially horizontal upper surface of the base 1. It is supported as follows.

  The support frame 10 supports a pair of guide rollers 11 and 11 on both the left and right sides of the central portion in the vertical direction. These guide rollers 11 and 11 are rotatable about different axes perpendicular to the support frame 10 and parallel to each other, and serve to guide the preceding web W1. Two support frames 10 are provided so as to face each other in the front and back direction of the paper surface, and the guide rollers 11 and 11 are horizontally mounted between the opposing surfaces of the two support frames 10 and 10 and supported in a both-side supported state. Yes.

  The leading web W1 is supplied from the upper right as shown by the one-dot chain line in FIG. 1, guided upward through the lower side of the guide rollers 11, 11, and processed by coating, coating, etc. by the rotation of a feed roller (not shown). It is sent to the process. In the splicing device, the preceding web W1 is conveyed leftward along a substantially horizontal conveyance path between the left and right guide rollers 11, 11, as indicated by arrows in the drawing.

  An elevating cylinder 70 is fixedly supported at the lower center of the support frame 10 at the approximate center in the left-right direction. The elevating cylinder 70 is an air cylinder having an output rod extending upward and performing a large stroke advance / retreat operation. An elevating support base 7 is attached to the upper end of the output rod. The elevating support base 7 extends in the left-right direction, and elevating cylinders 71, 72, 73 are fixedly supported at the upper center, left end, and right end, respectively.

  The elevating cylinders 71, 72, and 73 are air cylinders having an output rod extending upward, and making a forward / backward movement operation with a smaller stroke than the elevating cylinder 70, and the upper end of the output rod of the central elevating cylinder 71 is described above. A web holding unit 2 is attached. The above-mentioned joining roller 3 is attached to the upper end of the output rod of the left elevating cylinder 72 via the support bracket 30, and the above-mentioned support roller 4 is attached to the upper end of the output rod of the right elevating cylinder 73 by the support bracket. 40 is attached.

  The web holding unit 2 includes a front holding portion 2a and a rear holding which are arranged in parallel in the front and rear (left and right in the drawing) in the transport direction at a position facing the transport path of the preceding web W1 from the lower side between the left and right guide rollers 11 and 11. It includes a portion 2b, and further includes an oblique holding portion 2c continuous to the rear side of the rear holding portion 2b. The front holding part 2a, the rear holding part 2b and the oblique holding part 2c are hollow intake boxes connected to an intake source (not shown). The front holding part 2a and the rear holding part 2b have suction surfaces covered with suction pads on their respective upper surfaces that face the conveyance path, and the oblique holding part 2c is a surface that is inclined with the right side facing down with respect to the conveyance path. Has a suction surface covered with a suction pad.

  While the preceding web W1 is being transported, the web holding unit 2 is at a standby position sufficiently separated below the transport path as shown in FIG. 1, and holds the succeeding web W2 at this standby position. The trailing web W2 is pulled out from a holding roll (not shown) located on the lower right side, covers the upper part of the web holding unit 2 in the standby position, as indicated by a one-dot chain line in FIG. It is set in a state where it hangs down to an appropriate length on the left side, and is sucked and held on the respective suction surfaces by the operations of the front holding portion 2a, the rear holding portion 2b, and the oblique holding portion 2c, which will be described later.

  Moreover, the front-end | tip part of the trailing web W2 depending on the left side of the front holding | maintenance part 2a is hold | maintained at the take-up roll 20 provided in the same position. The take-up roll 20 is a metal roll and can be moved up and down by operation of an actuator (not shown) such as an air cylinder. The take-up roll 20 uses an adhesive tape to hold the leading end of the succeeding web W2 on the outer peripheral surface, and removes unnecessary portions on the leading end side caused by cutting described later by descending from the holding position. In FIG. 1, the lowered take-up roll 20 is indicated by a two-dot chain line.

  The setting of the following web W2 is an operation performed on the web holding unit 2 at the standby position during the conveyance of the preceding web W1, and can be reliably performed with a margin by the operator's manual work. However, it is also possible to automatically perform the drawing including the drawing from the holding roll by a dedicated device as disclosed in Patent Document 2.

  The web holding unit 2 moves up together with the lifting support 7 by the operation of the lifting cylinder 70 and moves from the standby position to the preparation position. The succeeding web W2 adsorbed and held by the web holding unit 2 approaches the transport path of the preceding web W1 by moving to the preparation position. The web holding unit 2 is further raised from the preparation position by the operation of the elevating cylinder 71 and moves to the operating position. As will be described later, the movement to the operating position is performed while the conveyance of the preceding web W1 is paused. The succeeding web W2 adsorbed and held by the web holding unit 2 overlaps the preceding web W1 on the transport path from below by moving to the operating position.

  The joining roller 3 is supported so as to be rotatable about an axis parallel to the guide roller 11 at a position facing the lower side of the left guide roller 11. The joining roller 3 is a hollow roller connected to an intake source (not shown), and adsorbs and holds the joining tape 31 on a part of the peripheral surface by the intake air of the intake source.

  During the conveyance of the preceding web W1, the joining roller 3 is at a standby position sufficiently separated below the conveyance path as shown in FIG. The bonding tape 31 is set on the suction surface facing the left of the bonding roller 3 in the standby position, and is sucked and held on the suction surface. The setting operation of the bonding tape 31 is an operation performed while the preceding web W1 is being transported, and can be surely performed manually by the operator, but is performed by an appropriate device provided facing the suction surface. It is also possible to

  The joining roller 3 rises together with the web holding unit 2 by the operation of the elevating cylinder 70 and moves to the preparation position, and approaches the conveyance path of the preceding web W1. Further, the joining roller 3 is further raised by the operation of the elevating cylinder 72 and moved to the operating position. The movement to the operating position is performed in a state where the conveyance of the preceding web W1 is stopped as will be described later, and the joining roller 3 rolls in contact with the left guide roller 11 via the preceding web W1, and the preceding web W1 is moved to the guide roller. 11 between. Note that the joining roller 3 has a lock mechanism (not shown), and the joining tape 31 is set at the standby position and then moved to the preparation position and the operation position. It is done in a state.

  The support roller 4 is rotatably supported around an axis parallel to the guide roller 11 at a position facing the lower side of the right guide roller 11. The support roller 4 moves from the standby position to the preparation position together with the lifting support base 7, the web holding unit 2, and the joining roller 3 by the operation of the lifting cylinder 70. The support roller 4 is moved up and down by the operation of the lift cylinder 73 at each of the standby position and the preparation position, and moves between the upper support position shown in FIG. 1 and the lower support position lowered from the position.

  In the upper support position, the support roller 4 substantially coincides with the front holding portion 2a and the rear holding portion 2b of the web holding unit 2, and at the right side of the front holding portion 2a and the rear holding portion 2b at the time of the butt joint performed as described later. The trailing web W2 is supported from below. On the other hand, the support roller 4 is positioned below the oblique holding portion 2c of the web holding unit 2 at the lower support position, and at the right side of the suction portion to the oblique holding portion 2c at the time of the lap joint performed as will be described later. Support W2 from below.

  On the other hand, a moving cylinder 80 is fixedly supported on the upper portion of the support frame 10. The moving cylinder 80 is an air cylinder having an output rod extending rightward. A moving support base 8 is attached to the tip of the output rod of the moving cylinder 80. Lifting actuators 81 and 82 are supported on the moving support base 8 side by side. The elevating actuators 81 and 82 are, for example, air cylinders having an output rod extending downward, and the presser bonding roller 5 described above is attached to the lower end of the output rod of the left elevating actuator 81 via the support bracket 50. The cutting unit 6 described above is attached to the lower end of the output rod of the right lifting actuator 82.

  The presser bonding roller 5 and the cutting unit 6 move in the left-right direction together with the moving support base 8 by the operation of the moving cylinder 80. When carrying out the butt joint described later, the presser bonding roller 5 and the cutting unit 6 are in the left position shown in FIG. At this time, the presser bonding roller 5 faces the upper part of the front holding part 2a of the web holding unit 2, the cutting unit 6 faces the upper part of the rear holding part 2b, and the tip of the cutting blade 60 is connected to the front holding part 2a and It faces directly between the rear holding parts 2b. On the other hand, when carrying out the lap splicing described later, the presser bonding roller 5 and the cutting unit 6 move to the right position (see FIG. 12) that is a predetermined distance away to the right of the left position. At this time, the presser bonding roller 5 is opposed to the upper side of the rear holding portion 2b, and the cutting unit 6 is positioned so as to be disengaged from the upper side of the rear holding portion 2b to the right side.

  During the conveyance of the preceding web W1, the presser bonding roller 5 and the cutting unit 6 are in a standby position apart above the conveyance path as shown in FIG. 1, and are lowered to the operation position by the operation of the lifting actuators 81 and 82, respectively. Moving. As will be described later, the movement to the operating position is performed while the conveyance of the preceding web W1 is paused.

  The presser bonding roller 5 is a hollow roller connected to an intake source (not shown), similar to the bonding roller 3, and adsorbs and holds the bonding tape 51 on a part of the peripheral surface by the intake air of the intake source. It can be rotated around a parallel axis. The joining tape 51 is set on a suction surface facing downward to the right of the press-joining roller 5 in the standby position when performing butt splicing, which will be described later, and sucked and held on the suction surface. When carrying out lap splicing described later, it is not necessary to hold the bonding tape 51, and the press bonding roller 5 functions as a press roller as will be described later.

  The presser joining roller 5 is then lowered to move to the operating position, abuts against the upper surface of the preceding web W1 on the transport path, and moves the preceding web W1 and the succeeding web W2 up and down between the web holding unit 2. Hold it again. The presser bonding roller 5 has the same locking mechanism as that of the bonding roller 3. The setting of the bonding tape 51 at the standby position and the subsequent movement to the operation position cause the presser bonding roller 5 to be moved by the operation of the lock mechanism. This is done while keeping the rotation.

  The presser bonding roller 5 can be pulled out to the near side or the far side of the paper surface at the standby position. This drawing is performed using the window hole 12 opened at the corresponding position of the support frame 10. As a result, the above-described setting of the bonding tape 51 can be performed in a state where the bonding roller 5 is pulled out, and the setting operation can be performed without being bothered by the presence of peripheral components such as the cutting unit 6 that are close to the suction surface. The window hole 12 is also used for monitoring operating conditions and various maintenance operations.

  The cutting unit 6 includes a cutting blade 60 in the lower left portion, and includes a presser body 61 on the right side of the cutting blade 60. The holding body 61 shown in the drawing is a hollow intake box connected to an unillustrated intake source, like the front holding portion 2a, the rear holding portion 2b, and the oblique holding portion 2c of the web holding unit 2, and is a lower surface facing the conveyance path. Has a suction surface covered with a suction pad. The presser body 61 comes into contact with the preceding web W1 from the upper side by the movement to the operation position described above, and sucks and holds the preceding web W1 on the suction surface. Further, at the time of butt splicing, which will be described later, the preceding web W1 and the succeeding web W2 are vertically stacked between the web holding unit 2 and the rear holding portion 2b that rise to the same position. The presser body 61 may not have a holding function by suction.

  The cutting blade 60 is attached to the output end of the cutting cylinder 62, and has a cutting blade at a tip extending diagonally downward to the left. This cutting edge is located above the conveyance path at the standby position shown in FIG. 1, and is moved to the conveyance path at a position deviated to one side in the width direction of the preceding web W1 and the following web W2 by moving to the operating position. Lower to reach the position.

  The cutting cylinder 62 is an air cylinder that makes a long stroke advance / retreat operation in a direction perpendicular to the paper surface. The cutting blade 60 reciprocates across the conveying path by the operation of the cutting cylinder 62 after moving to the operating position, and cuts the preceding web W1 and the succeeding web W2 or only the preceding web W1 as described later. .

  2-10 is explanatory drawing of the procedure of the butt joint performed by the splicing apparatus shown in FIG. This butt joint includes the first step shown in FIG. 2, the second step shown in FIGS. 3 to 5, the third step shown in FIG. 5, the fourth step shown in FIG. 6, the fifth step shown in FIG. 6 includes a sixth step, and further includes a seventh step for double-sided bonding illustrated in FIGS. 9 and 10.

  In these figures, the positions of the web holding unit 2, the joining roller 3 and the support roller 4 on the lower side of the conveying path, and the presser joining roller 5 and the cutting unit 6 on the upper side of the conveying path are shown in FIG. The right is shown together. In order to distinguish between the preceding web W1 and the succeeding web W2, the preceding web W1 is indicated by a one-dot chain line, and the succeeding web W2 is indicated by a two-dot chain line.

  In FIG. 2, the preceding web W1 is transported to the left along the transport path between the guide rollers 11 and 11. The web holding unit 2, the joining roller 3 and the support roller 4 are in a standby position separated downward in the conveyance path, and the presser joining roller 5 and the cutting unit 6 are in a standby position separated above the conveyance path.

  The succeeding web W2 covers the upper part of the web holding unit 2 at the standby position and is set in a state where it hangs down to an appropriate length on the left side, and is attracted to these by the operation of the front holding part 2a and the rear holding part 2b after the setting is completed. Retained. At this time, the oblique holding portion 2c does not perform an adsorption operation. Further, the support roller 4 is lifted on the lift support base 7 by the operation of the lift cylinder 73, is in the above-described support position, and is on the right side of the trailing web W2 extending from the holding position by the front holding portion 2a and the rear holding portion 2b. Support the part from the bottom side.

  Further, the bonding roller 3 has the bonding tape 31 adsorbed and held on the left-side adsorption surface, and the presser bonding roller 5 has the bonding tape 51 adsorbed and held on the lower-right adsorption surface. As described above, the holding tape 51 is preferably held by pulling the press bonding roller 5 toward the front side or the back side.

  Thereafter, the web holding unit 2, the joining roller 3 and the support roller 4 are raised by the operation of the elevating cylinder 70 and moved to the preparation position shown in FIG. At this time, the conveyance of the preceding web W1 is continued, and the succeeding web W2 is opposed to the web holding unit 2 and the support roller 4 at a distance below the conveyance path of the preceding web W1 by an appropriate length and joined. The roller 3 is also opposed to the lower part of the transport path with an appropriate distance.

  Next, the conveyance of the preceding web W1 is temporarily stopped. At the lower side of the conveyance path, the web holding unit 2 is raised by the operation of the elevating cylinder 71, and the joining roller 3 is raised by the operation of the elevating cylinder 72, respectively. Move to the indicated operating position. On the other hand, on the upper side of the conveyance path, the presser bonding roller 5 is lowered by the operation of the elevating actuator 81 and moves to the operation position shown in FIG.

  The succeeding web W2 adsorbed and held by the web holding unit 2 is overlapped under the preceding web W1 by moving to the operating position, and the presser joining roller 5 is brought into rolling contact with the preceding web W1 by moving to the operating position. W1 and the succeeding web W2 are sandwiched between the press bonding roller 5 and the front holding portion 2a of the web holding unit 2.

  Further, the joining roller 3 is brought into rolling contact with the left guide roller 11 via the preceding web W1 by moving to the operating position. The preceding web W1 is sandwiched between the joining roller 3 and the guide roller 11 on the left side of the web holding unit 2.

  After completion of the above clamping, the cutting unit 6 is moved down to the operating position shown in FIG. The presser 61 of the cutting unit 6 comes into contact with the preceding web W1 from the upper side by moving to the operating position, and the preceding web W1 is overlapped with the succeeding web W2 and sandwiched between the rear holding portion 2b of the web holding unit 2. To do. Further, the presser body 61 starts the suction operation, and sucks and holds the preceding web W1 extending to the right side of the holding position with the rear holding portion 2b on the suction surface.

  On the other hand, the cutting blade 60 of the cutting unit 6 is lowered to the position shown in FIG. 5 by the movement to the operating position. The cutting blade at the tip of the cutting blade 60 is positioned between the front holding portion 2a and the rear holding portion 2b of the web holding unit 2 so as to be dislocated to one side in the width direction of the preceding web W1 and the following web W2. The cutting blade 60 reciprocates between the front side and the back side of the sheet so as to cross the conveyance path by the subsequent operation of the cutting cylinder 62, and the leading web W1 and the trailing web W2 are moved to the front holding portion 2a. And the rear holding portion 2b.

  After the above cutting is completed, the cutting unit 6 is lifted by the operation of the lift actuator 82 and returns to the standby position as shown in FIG. On the web holding unit 2, the cut preceding web W1 and succeeding web W2 remain in a state where the cut ends are abutted. At this time, the unnecessary portion of the preceding web W1 that is continuous to the right side (rear side) of the cutting position is in a state in which the holding with the rear holding portion 2b is released by the lifting of the presser body 61, and an arrow in FIG. Removed as indicated by the symbol.

  The removal of the unnecessary portion of the preceding web W1 is realized, for example, by winding the preceding web W1 on a supply roll. The succeeding web W2 overlapping the right side portion of the preceding web W1 is sucked and held by the rear holding portion 2b, and the left side portion of the preceding web W1 is sandwiched between the front holding portion 2a and the presser bonding roller 5. Therefore, the butting of the preceding web W1 and the succeeding web W2 is maintained even after the unnecessary portion of the preceding web W1 is removed.

  After the removal of the preceding web W1, the cutting unit 6 is moved to the right position as indicated by the arrow in FIG. 7 by the operation of the moving cylinder 80, and the presser joining roller 5 in the operating position is moved to the preceding web W1 and the rear web. It rolls clockwise while maintaining the clamping state of the row web W2. As a result, the bonding tape 51 held by the presser bonding roller 5 is adhered to the upper surfaces of the preceding web W1 and the succeeding web W2 so as to straddle the butted portion as shown in FIG.

  Thereafter, unnecessary portions of the succeeding web W2 that are continuous on the left side (front side) of the sticking position are removed as indicated by arrows in FIG. 7, and the preceding web W1 and the succeeding web W2 are divided into the former end and the latter. It joins with the joining tape 51 in the state which faced | matched the front-end | tip. The removal of the unnecessary portion of the succeeding web W2 is realized by releasing the suction of the front holding portion 2a and lowering the take-up roll 20 described above.

  After the above joining is completed, as shown in FIG. 8, the web holding unit 2 is lowered by the operation of the lifting cylinder 71 and moved to the preparation position, and the presser joining roller 5 is lifted by the operation of the lifting actuator 81 and waits. Move to position. This movement is executed by releasing the suction of the rear holding portion 2b, and the preceding web W1 and the succeeding web W2 joined by the joining tape 51 are hung between the guide roller 11, the joining roller 3, and the support roller 4. The butt joint is completed. The succeeding web W2 is continuously sent out to the preceding web W1 by the subsequent resumption of conveyance.

  The butt joint as described above stops the conveyance of the preceding web W1 after the preparation operation until the subsequent web W2 is set and moved to the preparation position, and the web holding unit 2, the presser joining roller 5 and the cutting unit 6 are stopped. This is realized by operating each of them in association with each other.

  The preparatory operation described above is performed during the conveyance of the preceding web W1, and the operations of the web holding unit 2, the presser bonding roller 5 and the cutting unit 6 after the conveyance stop are simple operations including the operation of the cutting blade 60. is there. Therefore, the butt splicing of the preceding web W1 and the succeeding web W2 can be performed with high accuracy by a simple configuration and operation, and the time required for the splicing is shortened, and the conveyance stop time during splicing is minimized. Therefore, it is possible to reduce the size of the staying device provided between the transport destination and the load and to reduce the load.

  FIG. 9 shows a state after the conveyance is resumed. The joining roller 3 is in rolling contact with the lower surface on the left side of the spliced portion of the preceding web W1, and this joining roller 3 is counteracted as indicated by an arrow in the drawing along with the movement of the preceding web W1 after resumption of conveyance. Rotate clockwise. As shown in FIG. 9, the holding position of the joining tape 31 on the circumference of the joining roller 3 is set so as to correspond to the joining portion of the preceding web W1 and the succeeding web W2. 3 is attached to the joint from the opposite side of the upper joining tape 51.

  The bonding roller 3 is lowered by the operation of the elevating cylinder 72 and moved to the preparation position as shown in FIG. The preceding web W1 and the succeeding web W2 are conveyed in a state where they are firmly joined from both sides by the joining tapes 31 and 51, and are sent out to processing steps such as coating and coating. The trailing web W2, for example, is placed between the left and right guide rollers 11, 11 by moving the holding roll located at the lower right side upward, and the web holding unit 2, the joining roller 3, and the support roller are supported. The roller 4 is lowered by the operation of the elevating cylinder 70 and returned to the standby position, and the initial state shown in FIGS. 1 and 2 is realized.

  If double-sided bonding is not necessary, the setting of the bonding tape 31 may be omitted in the preparation state shown in FIG. 2, and according to the splicing device of the embodiment, butt splicing by single-sided bonding and double-sided bonding is selected. Can be implemented.

  Furthermore, according to the splicing device shown in FIG. 1, lap splicing can be performed by the following procedure. FIGS. 11-19 is explanatory drawing of the procedure of the lap joint implemented by the splicing apparatus shown in FIG. The first and second steps shown in FIG. 11, the third step shown in FIGS. 12 and 13, the fourth step shown in FIGS. 13 and 14, the fifth step shown in FIGS. 14 and 15, and It includes a sixth step shown in FIGS. 16 and 17, and further includes a seventh step for cutting edge processing shown in FIGS.

  2 to 10, the positions of the web holding unit 2, the joining roller 3 and the support roller 4 on the lower side of the conveying path, and the presser joining roller 5 and the cutting unit 6 on the upper side of the conveying path are illustrated. 1 and the top, bottom, left and right are shown together. In order to distinguish between the preceding web W1 and the succeeding web W2, the preceding web W1 is indicated by a one-dot chain line, and the succeeding web W2 is indicated by a two-dot chain line.

  FIG. 11 shows the set state of the trailing web W2. This setting is performed in the same manner as in the case of the butt joint shown in FIG. 2, but in the case of lap joint, the oblique holding portion 2 c of the web holding unit 2 is also attracted, and the support roller 4 is operated by the lifting cylinder 73. As shown in FIG. 11, the trailing web W2 is sucked and held by all of the front holding portion 2a, the rear holding portion 2b, and the oblique holding portion 2c of the web holding unit 2. Then, the portion extending to the right side of the oblique holding portion 2c is supported by the support roller 4 at the lower support position.

  In the case of lap splicing, after the above setting is completed, the following web W2 held on the front holding part 2a and the rear holding part 2b of the web holding part 2 is held on both sides as shown by black arrows in FIG. Cut between the parts 2a and 2b, and the double-sided bonding tape 9 is stuck along the cutting edge on the upper surface of the succeeding web W2 after cutting, and a pretreatment is performed to remove an unnecessary part on the left side of the cutting position.

  The subsequent web W2 can be cut manually by the operator using the gap between the holding portions 2a and 2b as a guide, and the double-sided adhesive tape 9 can also be attached by the operator's manual operation. A dedicated device may be provided, and the subsequent web W2 may be cut and the double-sided bonding tape 9 may be attached by the operation of the device. Unnecessary portions after cutting are removed as indicated by arrows in the drawing after the suction of the front holding portion 2a is released and then manually performed by the operator. At this time, the rear holding portion 2b maintains the suction state, and the position of the cut end of the subsequent web W2 does not change.

  Further, in the case of lap splicing, the bonding roller 3 is suction-held by the bonding roller 3, but it is not necessary to suck and hold the bonding tape 51 to the press-bonding roller 5, and the press-bonding roller 5 has the following lap splicing. In the process, it only functions as a presser roller.

  After completion of the above pretreatment, the web holding unit 2, the joining roller 3, and the support roller 4 are raised by the operation of the elevating cylinder 70 and moved to the preparation position shown in FIG. At this time, the conveyance of the preceding web W1 is continued, and the succeeding web W2 is close to and opposed to the conveyance path of the preceding web W1 on the rear holding unit 2b, and on the right side (rear side) of the rear holding unit 2b, It is located away from the transport path along the oblique holding portion 2c.

  On the other hand, on the upper side of the conveyance path, the presser joining roller 5 and the cutting unit 6 are moved to the right position by the operation of the moving cylinder 80. By this movement, the presser bonding roller 5 is opposed to the upper part of the rear holding part 2b with the conveyance path in between, and the cutting blade 60 of the cutting unit 6 is opposed to the upper part of the oblique holding part 2c with the conveyance path in between.

  Next, the conveyance of the preceding web W1 is temporarily stopped, and the web holding unit 2 is raised by the operation of the elevating cylinder 71 below the conveyance path, and the joining roller 3 is raised by the operation of the elevating cylinder 72, as shown in FIG. Each moves to the operating position. On the other hand, on the upper side of the conveyance path, the presser joining roller 5 is lowered by the operation of the lifting / lowering actuator 81 and moves to the operation position shown in FIG.

  The succeeding web W2 sucked and held by the rear holding portion 2b of the web holding unit 2 is overlapped under the preceding web W1 by moving to the operating position, and the cut end portion of the succeeding web W2 is adhered to the upper surface. The double-sided bonding tape 9 is joined (lap-joined) to the preceding web W1. The presser joining roller 5 is brought into rolling contact with the upper surface of the preceding web W1 by moving to the operating position, and the preceding web W1 and the succeeding web W2 are placed on the right side of the joining position by the double-sided joining tape 9 with the presser joining roller 5 and the rear holding portion. 2b. At this time, the front holding portion 2a of the web holding unit 2 also operates, and the preceding web W1 is sucked and held on the suction surface of the front holding portion 2a on the left side of the joining position.

  The joining roller 3 is brought into rolling contact with the left guide roller 11 via the preceding web W1 by moving to the operating position. The preceding web W1 is sandwiched between the joining roller 3 and the guide roller 11 at a position separated to the left of the web holding unit 2.

  Thereafter, the cutting unit 6 is lowered by the operation of the lifting actuator 82 and moved to the operating position shown in FIG. The holding body 61 of the cutting unit 6 is brought into contact with the preceding web W1 extending to the right side of the web holding unit 2 from the upper side by moving to the operating position, and sucks and holds the preceding web W1 on the suction surface.

  On the other hand, the cutting blade 60 of the cutting unit 6 is lowered to the position shown in FIG. 14 by the movement to the operating position, and the cutting blade at the tip of the cutting blade 60 is the rear holding portion 2 b of the web holding unit 2 and the cutting unit 6. Between the presser body 61 and the preceding web W1, it is located on one side in the width direction. The cutting blade 60 moves back and forth across the transport path between the front side and the back side of the paper surface by the operation of the cutting cylinder 62 to cut the preceding web W1. The trailing web W2 is located below the preceding web W1 by the suction holding of the oblique holding portion 2c on the right side of the rear holding portion 2b, and there is no possibility of being cut by the operation of the cutting blade 60.

  After the above-described cutting is completed, the cutting blade 60 is raised by the operation of the elevating actuator 82 and returns to the standby position shown in FIG. 15. Unnecessary portions of the preceding web W1 continuous to the right side (rear side) of the cutting position are shown in FIG. It is removed as indicated by the arrow inside. This removal is realized, for example, by winding the preceding web W1 around a supply roll. The preceding web W1 continuous to the left side (front side) of the cutting position is sandwiched between the press bonding roller 5 and the rear holding portion 2b, and maintains the state at the time of cutting even after the unnecessary portion is removed.

  After completion of the removal of the preceding web W1, the cutting unit 6 moves to the right position as shown in FIG. At this time, the presser joining roller 5 in the operating position rolls counterclockwise while maintaining the holding state of the preceding web W1 and the succeeding web W2, from the upper position of the rear holding portion 2b to the upper position of the front holding portion 2a. It moves through the joining position by the double-sided joining tape 9. By this movement, the preceding web W1 and the succeeding web W2 are pressed against the double-sided bonding tape 9 from both the upper and lower sides, and the bonding by the double-sided bonding tape 9 is strengthened.

  At this time, the web holding unit 2 releases the suction by the oblique holding portion 2 c, and at the same time, the support roller 4 is raised on the lift support base 7 by the operation of the lift cylinder 73 and moved to the upper support position. Accordingly, the succeeding web W2 that is continuous to the right side (rear side) of the joining position is supported in a manner that linearly continues to the preceding web W1 on the transport path.

  After completion of the above joining, as shown in FIG. 17, the web holding unit 2 is lowered by the operation of the lifting cylinder 71 and moved to the preparation position, and the presser joining roller 5 is lifted by the operation of the lifting actuator 81 and is moved to the standby position. Move to. This movement is executed after releasing the suction by the rear holding portion 2b, and the preceding web W1 and the succeeding web W2 joined by the double-sided joining tape 9 are placed between the guide roller 11, the joining roller 3 and the support roller 4. It is in a state of being stretched and the lap joint is completed. The succeeding web W2 is continuously sent out to the preceding web W1 by the subsequent resumption of conveyance.

  The lap joint as described above stops the conveyance of the preceding web W1 after the pretreatment including the setting, cutting and adhering of the double-sided tape 9 of the succeeding web W2, and the preparatory operation until the movement to the preparation position. This is realized by operating the web holding unit 2, the presser bonding roller 5 and the cutting unit 6 in association with each other.

  The preparatory operation described above is performed during the conveyance of the preceding web W1, and the operations of the web holding unit 2, the presser bonding roller 5 and the cutting unit 6 after the conveyance stop are simple operations including the operation of the cutting blade 60. is there. Therefore, the splicing of the preceding web W1 and the succeeding web W2 can be performed with a simple configuration and operation, and the time required for splicing is shortened, and the conveyance pause time during splicing is minimized. Therefore, it is possible to reduce the size and load of the staying device provided between the transfer destination and the destination.

  As described above, according to the joining device shown in FIG. 1, both the butt joint and the lap joint can be handled by changing the operation procedure.

  FIG. 18 shows a state after resumption of conveyance. The joining roller 3 is in rolling contact with the lower surface on the left side of the spliced portion of the preceding web W1, and this joining roller 3 is counteracted as indicated by an arrow in the drawing along with the movement of the preceding web W1 after resumption of conveyance. Rotate clockwise. The holding position of the joining tape 31 on the circumference of the joining roller 3 is set so as to correspond to the cutting edge of the succeeding web W2, and the joining tape 31 includes the preceding web W1 to which the joining roller 3 rolls and the succeeding web W1. It sticks on the lower surface of the web W2 so as to straddle the cut edge of the succeeding web W2.

  The joining roller 3 is lowered by the operation of the elevating cylinder 72 and moved to the preparation position after the joining of the joining tape 31 is completed as shown in FIG. The preceding web W1 and the succeeding web W2 are conveyed in a state where they are joined by the double-sided joining tape 9 and the joining tape 31, and sent out to processing steps such as coating and coating. Thereafter, the trailing web W2 is placed between the left and right guide rollers 11, 11 by moving a holding roll located at the lower right, for example, and the web holding unit 2, the joining roller. 3 and the support roller 4 are lowered by the operation of the elevating cylinder 70 and returned to the standby position, and the support roller 4 is further lowered by the operation of the elevating cylinder 73 and returned to the lower support position, and the initial state shown in FIG. Realized.

  In addition, you may abbreviate | omit sticking with the joining tape 31, and the set of the joining tape 31 is unnecessary in the preparation state shown in FIG. On the other hand, the use of the bonding tape 31 has the following advantages. 20 is an enlarged view of the joining portion of the preceding web W1 and the succeeding web W2, FIG. 20A shows a case where the joining tape 31 is not used, and FIG. 20B shows a case where the joining tape 31 is used. .

  As described above, since the double-sided tape 9 is attached by manual work after cutting the succeeding web W2, the cut end of the succeeding web W2 is located on the left side of the joint portion by the double-sided tape 9, as shown in FIG. 20A. May protrude slightly. This protruding end faces the downstream side (front side) of the conveying direction indicated by the white arrow in the figure, and the protruding end is caught in the middle of the conveying path or in the processing process of the conveying destination, which hinders conveyance and processing. The problem of coming will occur.

  As shown by a two-dot chain line in FIG. 20A, the joining tape 31 is stuck so as to straddle the cut end of the succeeding web W2. Therefore, when the joining tape 31 is used, as shown in FIG. 20B, the cut end of the succeeding web W2 protruding from the joining portion by the double-sided tape 9 is covered with the joining tape 31, thereby avoiding the above-mentioned problem. be able to.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

2 Web holding unit 2a Front holding portion 2b Rear holding portion 2c Inclined holding portion 3 Joining roller 4 Support roller 5 Pressing joining roller (pressing roller)
6 Cutting unit 7 Lifting support base 8 Moving support base 9 Double-sided joining tape 31 Joining tape 51 Joining tape 60 Cutting blade 61 Presser body 81 Lifting actuator 82 Lifting actuator W1 Preceding web W2 Subsequent web

Claims (7)

In the splicing method of the web, the leading end of the succeeding web is overlapped and joined to the end of the preceding web, and the joined succeeding web is continuously sent to the transport path to the transport path.
While the preceding web is being transported, the succeeding web is held from the lower surface side by the front holding part and the rear holding part arranged in the front and rear in the transport direction at a position away from the transport path, and obliquely held on the rear side of the rear holding part A first step of holding the device in an inclined posture with the rear facing down,
The subsequent web held by the front holding part and the rear holding part is cut between the two holding parts, and unnecessary portions on the front holding part side are removed, while the upper surface of the succeeding web on the rear holding part side is cut. A second step of adhering a double-sided adhesive tape along the edge;
A third step of bringing the succeeding web held by the rear holding part closer to the transport path, overlapping the preceding web that has stopped transporting, and joining with the double-sided adhesive tape;
The preceding web and the succeeding web that overlap on the rear side of the joining position are sandwiched between the rear holding portion and a pressing roller that is in rolling contact with the upper surface of the preceding web, and the preceding web that is continuous to the rear side of the clamping position is placed on the upper surface. A fourth step of holding the holding member at a position away from the succeeding web held by the slant holding unit by the presser that is in contact;
A fifth step of cutting the preceding web by an operation of a cutting blade between the presser roller and the presser body, and removing an unnecessary portion of the preceding web continuous on the rear side of the cutting position;
After rolling the press roller forward and pressing it to the sticking position with the double-sided bonding tape, strengthening the bonding with the double-sided bonding tape, then releasing the holding of the front holding part, the rear holding part and the diagonal holding part And a sixth step of restarting the conveyance of the preceding web and sending the succeeding web joined to the preceding web to the conveyance path. The joining roller is rolled onto the lower surface of the preceding web that has resumed conveyance at a position before the front holding portion, and the joining tape held on a part of the peripheral surface of the joining roller is used to lower the lower surface of the preceding web and the succeeding web. The web splicing method according to claim 1 , further comprising a seventh step of sticking across the cut end of the succeeding web. The front holding portion, a rear holding portion and the slant holding portion web splicing method according to claim 1 or claim 2, characterized in that for holding the trailing web by adsorption to the upper surface. The pressing body, web splicing method according to claim 1 or claim 2, characterized in that holding by suction of the preceding web to the lower surface. The web joining method according to claim 2 , wherein the joining roller holds the joining tape by suction to a peripheral surface. In the splicing device of the web that joins the leading end portion of the succeeding web to the end portion of the preceding web, and sends the joined succeeding web to the transport path continuously to the preceding web.
A front holding part, a rear holding part and an oblique holding part, which are arranged below and in front of the transporting path on the lower side of the transporting path, and hold the succeeding web on the upper surface facing the transporting path;
An elevating support table that supports the front holding unit, the rear holding unit, and the diagonal holding unit, and moves up and down to move toward and away from the conveyance path;
A presser roller, a cutting blade and a presser body arranged side by side in the transport direction on the upper side of the transport path;
A movement that supports the presser roller, the cutting blade and the presser and moves back and forth between a front position where the presser roller is opposed above the front holding part and a rear position where the presser roller is opposed above the rear holding part. A support base;
A web splicing device, comprising: a lift actuator that lifts and lowers the presser roller, the cutting blade, and the presser separately to move the presser roller toward and away from the conveyance path. It is arranged opposite to the lower side of the conveyance path at a position in front of the front holding part, holds a bonding tape on a part of its peripheral surface, moves toward and away from the conveyance path, and moves toward the preceding web when approaching. The web splicing device according to claim 6 , further comprising a joining roller that rolls onto the lower surface of the succeeding web and attaches the joining tape.

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