JP3174611U - Paper splicer - Google Patents

Abstract

Provided is a paper splicing device capable of achieving a reliable and highly reliable paper splicing, capable of performing a good paper pressing operation on a new base paper side and an old base paper side by an easy switching operation with a simple member configuration. .
In a paper splicing device, an upper portion having crimping surfaces (14a, 14b) for sandwiching and bonding old and new base papers P with a lower portion as a rotation center opens and closes in the paper splicing unit in the approaching / separating direction. A pair of set tables 13a and 13b arranged so as to be rotatable is provided. Further, a table stopper 21 is provided such that the lower rotation center is positioned on the vertical surface of the intermediate position of the set table, and the upper portion thereof is erected so as to be inclined at predetermined angles from the vertical surface toward the left and right set tables. And a paper presser bar 25 in which the lower rotation center is coaxial with the rotation center of the table stopper, and the upper portion thereof can be tilted in the direction of both the left and right set tables from the vertical surface.
[Selection] Figure 2

Description

  The present invention relates to a paper splicing device, for example, a paper splicing device for performing a splicing of old and new roll base paper in order to maintain a continuous base paper supply in a corrugating machine that produces corrugated cardboard sheets.

  A corrugating machine for producing corrugated cardboard is provided with a paper splicing device, and a base paper fed from a base paper roll is supplied via a paper splicing unit of the device, but the paper splicing machine is used before the base paper roll is used up. In the unit, in order to supply new base paper from another base paper roll that has been waiting in advance, paper splicing is performed in which the leading end of the new base paper is overlapped with the rear end of the old base paper to switch the supply of the base paper.

  In such a paper splicing device, when starting the paper splicing operation, first, while keeping the line speed on the outlet side of the base paper, the inlet side speed is increased and the old base paper is accumulated inside the accumulator. During the paper splicing operation that stops rotation and stops the supply of the base paper from the inlet side and attaches the leading edge of the new base paper to the back of the old base paper with double-sided adhesive tape and separates the old base paper from the base paper roll, It is sent out at the line speed. Therefore, if the rotation of the new base paper roll is started when all the accumulated amount of the old base paper has been sent out, the supply of the new base paper with the tip attached to the rear end of the old base paper starts, and the old base paper and the new base paper Are switched without delay, and the continuous supply of the base paper is maintained (for example, see Patent Documents 1 and 2).

  Further, in the conventional paper splicing apparatus as described above, generally, the paper splicing part for pasting the old and new base papers in the paper splicing unit is composed of a pair of swing tables that open and close so as to be close to and away from each other. The old base paper and the new base paper are overlapped and sandwiched between these closed swinging tables via a double-sided adhesive tape, and the old and new base papers are attached by pressure bonding. That is, this symmetrical splice crimping portion is a paper splicing portion.

  In addition, a pair of pressure-bonding rolls that can be moved close to and away from each other are arranged in the paper splicing unit, and the pair of pressure-bonding rolls sandwiches the pasting portions of both the old and new base papers at the time of paper splicing. A paper splicing device that is configured to rotate in the reverse direction and feed the pasted base paper is considered. In this case, the bonding part can be reliably crimped with a uniform force across the entire width between the crimping rolls, and the feeding of the base paper can be restarted at the same time while maintaining the sandwiched state of the bonding part. Can be made extremely short (see Patent Document 3).

JP 2002-012349 A JP 2003-182895 A Utility Model Registration No. 3111026

  In the conventional paper splicing device as described above, the new base paper is pressed against the one swing table or the pressure roll by the pressing member in the preparation process in which the new base paper is set at the start of the splicing operation. Maintaining the state, the old and new base papers are pasted together due to the proximity of the other swinging table and the crimping roll. The old base paper is pressed by the pressing member until it is cut by the cutter. Therefore, each pressing member is also provided in a pair to correspond to each of the pair of swing tables and crimping tables, and the pressing and opening of the base paper is timed for each member on the new base paper side and the old base paper side. It was necessary to perform the operation, and the member configuration and work procedure were complicated.

  In view of the above-described problems, the object of the present invention is to provide a reliable and reliable paper splicing that can be performed with an easy switching operation on the new base paper side and the old base paper side while having a simple member configuration. It is to provide a paper splicing device that can achieve the above.

  In order to achieve the above-mentioned object, the present invention provides the above-described roll hooking on an old base paper conveyed downstream from a first base paper roll supported by one of a pair of roll hooks of a mill roll stand via an accumulator. In the paper splicing device for splicing the leading end of the new base paper drawn from the second base paper roll supported on the other end of the accumulator on the upstream side of the accumulator, the reciprocating motion is performed in parallel with the base paper transport direction of the accumulator at the upstream position of the accumulator. The rotation of the drive roll is stopped by pressing the drive roll that feeds the base paper to the accumulator to the supported paper splice unit and the old base paper on the drive roll at the time of paper splicing, and the old base paper is sent out from the splice unit. Nip rolls for stopping the machine, and the drive roll and the original being conveyed at a position upstream from the nip rolls. A pair of set tables that are pivotably arranged so that the upper part opens and closes in the direction of approaching and moving away from each other with the lower part as the center of rotation, and a lower part on the vertical plane at the intermediate position between the pair of set tables Positioning the rotation center, the upper part of the table stopper is erected so as to be able to incline by a predetermined angle from the vertical plane toward the left and right set tables, and the table stopper is coaxial with the rotation center of the table stopper. The lower center of rotation is positioned, and the upper part thereof is equipped with a paper presser bar arranged in parallel with the table stopper so as to be able to incline from the vertical surface toward both the left and right set tables.

  In the paper splicing device according to the present invention, the pair of set tables has a predetermined interval between the lower portions of each other, and the pasted portions of the old and new base papers are connected to each other on the vertical surface from both sides at the time of paper splicing. The table has a pair of crimping surfaces to be sandwiched in the upper part and is equipped with a cutter for cutting old base paper after paper splicing, constituting a symmetrical splice mechanism with the vertical surface in between, and a table The stopper is inclined and moved in an area where it does not interfere with the paper being transported. In the inclined state toward one or the other set table, the upper part of the table stopper rotates in the closing direction. Positioning and fixing the crimping surface of the set table on the vertical surface by abutting the set table and restricting its rotation, and with respect to one or the other set table It does not interfere with the other or one set table that is in contact and closed, and the paper holding bar is inclined and moved within an area that does not interfere with the paper being conveyed. The new base paper is tilted with respect to one or the other set table that is positioned and fixed by the contact of the stopper and pressed upstream from the crimping surface, and the pressed state is due to the rotation of the other or one set table in the closing direction. It is maintained until the pasting and pasting of both the old and new base papers between the two crimping surfaces is completed, and after the pasting is completed, the opposite base or the other set table is inclined to press the old base paper at a position upstream from the crimping surface, The pressing state is maintained until the cutting of the old base paper is completed.

  Therefore, in the paper splicing device according to the present invention, the upper part of one table stopper erected between the pair of set tables positions the crimping surfaces of the two set tables at the sandwiching positions where the old and new base papers are bonded together. In addition, the positioning operation by tilting contact with one set table and the positioning release operation by retreating from the other set table are completed with one action by the same member. For this reason, a stopper is provided for each set table, and compared with the case where one contact positioning operation and the other positioning release operation are separately performed for the two stoppers, not only the member configuration is reduced, but also the operation is performed. The number of operations is reduced, and it is possible to increase the efficiency of the paper splicing operation process together with the reliable pasting of old and new base papers by the crimping surfaces that are accurately positioned.

  Further, in the paper splicing device according to the present invention, the table stopper and the lower rotation center are coaxially arranged side by side with one paper pressing bar, and simultaneously with the pressing operation of the base paper by the inclination to one set table, Since the base paper pressing and releasing operation is completed by the evacuation, the pressing state of the new base paper and the old base paper can be switched with one action by the same member. For this reason, a pressing member is provided for each set table, and the member configuration and operation are reduced compared to the case where the base paper pressing operation for one member and the base paper pressing and releasing operation for the other member are performed separately. It is possible to improve the efficiency of the paper splicing operation process.

  The drive required for these table stopper and paper holding bar is only a simple movement that tilts and swings in a pendulum manner in the left and right directions with the lower part as the center of rotation. The power is extremely simple and small. The table stopper and the paper presser bar are coaxially arranged at the lower part rotation center. However, the table stopper and the paper pressing bar may be configured to be driven to tilt together or to be driven to tilt independently of each other.

  In the paper splicing device according to the present invention, the base paper heading from the paper splicing unit to the accumulator is preferably wound around the nip roll and the drive roll in an S-shape over a half circumference, and the nip roll is being transported by the driving device during the transport of the base paper. And the drive roll are rotated in opposite directions at a peripheral speed synchronized with the travel speed of the base paper, and when the drive roll is stopped, the nip roll is pressed against the drive roll while maintaining its rotation.

  That is, according to the drive device, the drive roll, the nip roll, and the drive device can be arranged in the paper splicing unit in the vicinity of the base paper laminating and sandwiching portion, and the paper splicing unit is located on either the left or right base paper roll of the mill roll stand. The distance between the sandwiching portion, the drive roll, and the base paper pressure contact holding portion by the nip roll can be maintained at a constant short distance, and the base paper passing direction between both rolls can be oriented in the vertical direction. Therefore, the paper splicing device of the present invention is the cause of the breakage of the base paper due to the bending of the base paper that occurs when the drive roll and the nip roll are arranged in the accumulator frame and the distance between the base paper pressure contact holding portion and the sandwiching portion is long. Can be avoided.

  The drive roll and the nip roll are rotated in opposite directions at a peripheral speed synchronized with the base paper traveling speed during the transport of the base paper, and when the drive roll is stopped, the nip roll is pressed against the drive roll while maintaining its rotation, When the base paper is sandwiched between both rolls, the nip roll has the same traveling speed as the base paper, so the tension fluctuation in the base paper is suppressed, and if both rolls are finally braked in that state, the base paper will break. The base paper supply can be smoothly stopped without such an impact.

  In the paper splicing device of the present invention, a table stopper and a paper pressing bar whose upper part is inclined and moved in the direction of the left and right set tables, respectively, at an intermediate position between a pair of set tables for sandwiching and bonding old and new base papers in the paper splicing unit Are arranged in a coaxial manner with the lower rotation center, and the set table is positioned in a state where the new and old base papers are sandwiched and bonded together by inclining contact with one set table of the table stopper. In addition to being able to perform positioning operation on one set table and evacuation from the other set table at the same time with one action, the pressing operation of the base paper against the set table and the other by the inclination of the paper pressing bar to one set table The press and release operation of the base paper against the set table It performed in Deployment. Therefore, with a simple configuration having a smaller number of members than in the past, it is possible to perform good paper pressing on the new base paper side and the old base paper side with an easy switching operation, and it is possible to achieve a reliable and highly reliable paper splicing. is there.

It is a schematic front view which shows the whole structure of the paper splicing apparatus by one Embodiment of this invention arrange | positioned on a mill roll stand. It is explanatory drawing which shows the internal structure of the paper splicing unit of the paper splicing device by one Embodiment of this invention. FIG. 3 is an explanatory diagram corresponding to FIG. 2 illustrating a state when a new base paper is set in a preparatory process for a paper splicing operation. It is explanatory drawing corresponding to FIG. 2 which shows the positioning state of the right set table by the table stopper in the preparatory process of paper splicing operation | movement. FIG. 5 is an explanatory view corresponding to FIG. 2 illustrating a state in which a new base paper is pressed against the right set table by the paper pressing bar when the preparatory process for the paper splicing operation is completed. FIG. 3 is an explanatory view corresponding to FIG. 2 illustrating a state where the old and new base papers are sandwiched and bonded at the start of the paper splicing operation. It is explanatory drawing corresponding to FIG. 2 which shows the old base paper cutting | disconnection state after both new and old base paper bonding of paper joining operation | movement. FIG. 3 is an explanatory diagram corresponding to FIG. 2 showing a new base paper supply state at the time of completion of a paper splicing operation. It is explanatory drawing which shows operation | movement of a drive roll and a nip roll, (a) is the schematic which shows the positional relationship in the paper splicing unit on a flame | frame, (b) is the schematic of a drive roll and a nip roll part. .

  A paper splicing device as a preferred embodiment of the present invention will be described below. FIG. 1 is a schematic front view showing the overall configuration of the paper splicing device according to the present embodiment. FIG. 2 is an explanatory diagram showing the internal structure of the paper splicing unit, which is the main part of the paper splicing device, in a state during normal stencil conveyance. FIGS. The positional relationship is shown. 5 to 8, the illustration of the table stopper is omitted for easy explanation of the operation of the paper pressing bar.

  In FIG. 1, a paper splicing device 1 is arranged on a mill roll stand 2 and is rotationally driven by roll hooks (3a, 3b) provided on the left and right sides of the mill roll stand 2 so as to be swingable up and down. The base papers from the base paper rolls (4a, 4b) supported in a possible manner are joined together.

  An accumulator 5 extending along the base paper feed line direction is disposed above the mill roll stand 2, and the mill roll stand is located on the frame 6 at a position upstream of the accumulator 5 along the accumulator line direction. The paper splicing unit 10 is supported so as to be capable of reciprocating between an upper position of the left base paper roll 4a and an upper position of the right base paper roll 4b.

  The accumulator 5 has a fixed-side rotating roll group 7 located at the left end of the frame 6 and a movable-side roll group 8 capable of reciprocating in the line direction along the frame 6 on the right side of the accumulator 5. The base paper P is circulated between the two roll groups. In this accumulator 5, the accumulated amount of base paper can be increased by increasing the distance between the roll groups (7, 8) while maintaining the outlet side line speed. Therefore, the accumulated amount of base paper is reduced prior to the start of the splicing operation. If the number is increased, the supply of the base paper to the output side can be continued while the distance between the roll groups is reduced even after the supply of the base paper from the entrance side is stopped with the start of paper splicing.

  Here, in FIG. 1, the base paper P from the base paper roll 4a supported by the left side roll hook 3a of the left and right roll hooks is sent to the accumulator 5 through the paper splicing unit 10, and the accumulator 5 exits. It is assumed that the paper is supplied to a line from the side to a corrugating machine (not shown), and this base paper roll 4a is an old base paper roll. Further, it is assumed that a new base paper roll 4b to be supplied to the line is prepared for the right side roll hook 3b in place of the old base paper roll 4a.

  On the other hand, as shown in FIG. 9, the paper splicing unit 10 rotates the drive roll 11 by press-contacting the drive roll 11 disposed on the outlet side of the accumulator 5 with the drive roll 11 via the old raw paper P during paper splicing. And a nip roll 12 for stopping the feeding of the old base paper P via the paper splicing unit 10.

  A pair of set tables (13a, 13b) are located upstream of the drive roll 11 and the nip roll 12, and as shown in FIG. It is arranged so as to be pivotable so as to open and close in the approaching / separating direction, and the upper part has a bonding part for old and new base papers on the vertical surface 20 between these set tables (13a, 13b) at the time of paper joining. Has a pair of pressure-bonding surfaces (14a, 14b) for sandwiching them from both sides. Near the lower portion of the pair of set tables (13a, 13b), guide rolls (18a, 18a, 13b) for guiding the base paper introduced into the paper splicing unit 10 to travel on a predetermined path between the pair of set tables. 18b) is arranged. In a normal transport state, the pair of set tables (13a, 13b) are separated from each other with both the crimping surfaces (14a, 14b) being slightly away from the vertical surface 20, as shown in FIG. It is in the evacuation state.

  The pair of set tables (13a, 13b) are arranged such that their lower portions are spaced apart from each other by a predetermined distance, and the upper portions protrude from each other so that the crimping surfaces (14a, 14b) are close to each other. It has a substantially L-shape. In addition, cutters (17a, 17b) for cutting old base paper after paper splicing are provided, and a symmetrical splice mechanism is configured with the vertical surface 20 in between.

  Therefore, the pair of set tables (13a, 13b) has a space between the lower portions even in the closed state of the upper portion where the crimping surfaces (14a, 14b) are in the clamping position, and this central space has , A table stopper 21 for positioning the table by abutting against one of the set tables 13a or 13b, and a paper pressing bar 25 for pressing the base paper against either one of the set tables 13a or 13b. Has been.

  The table stopper 21 is positioned so that the lower rotation center 23 is positioned on the vertical surface 20, and the upper portion of the table stopper 21 can be tilted in a swinging manner by a predetermined angle from the vertical surface toward both the left and right set tables. In addition, two protrusions (22a, 22b) are provided on the upper end of the table stopper 21 in a Y-shape so as to protrude left and right as contact portions with respect to the set table. Further, each of the pair of set tables (13a, 13b) has stopper receiving portions (15a, 15b) that receive the contact of the protruding portions (22a, 22b) of the inclined table stopper 21, respectively, where the base paper travels. It is provided on the outer side (front side with respect to the paper surface). That is, the tilt movement range of the table stopper 21 is also in an area where it does not interfere with the paper being conveyed.

  Each of the set tables (13a, 13b) is adjusted so that the rotation range in the closing direction slightly exceeds the vertical surface 20, and the table stopper 21 is inclined to either the left or right set table 13a or 13b. In this state, one of the projections 22a or 22b of the table stopper 21 abuts against the stopper receiving portion 15a or 15b of one set table 13a or 13b that rotates in the closing direction, thereby restricting the rotation. The crimping surface 14a or 14b of the set table 13a or 13b is positioned and fixed on the vertical surface 20. At this time, the other protrusion 22b or 22a is positioned relative to the one set table 13a or 13b that is positioned. Position that is close and does not interfere with the other set table 13b or 13a in the closed state A.

  Therefore, according to the table stopper 21 of the present embodiment, simultaneously with the tilt movement for positioning with respect to one set table 13a or 13b, the retreat from the other set table 13b or 13a is simultaneously performed with one action. In the present embodiment, a stopper lever 24 communicated in an inverted L shape is provided at the lower end near the rotation center 23 of the table stopper 21, and the table stopper is driven by driving the stopper lever 24 in the vertical direction. 21 rotates and the upper part is inclined and moved in the left-right direction.

  Further, the paper pressing bar 25 has a lower rotation center 27 arranged in parallel with the rotation center of the table stopper 21 (in a direction perpendicular to the paper surface), and the upper portion does not interfere with the paper being conveyed. In this way, it tilts and moves in a swinging manner toward the left and right set table. Two pressing protrusions (26a, 26b) are formed on the left and right sides of the upper end portion of the paper pressing bar 25 so as to project in a square shape. On the other hand, the pair of set tables (13a, 13b) has protrusions (26a, 13b) whose inclined surfaces that enter the left and right directions from the pressure-bonding surfaces immediately upstream of the pressure-bonding surfaces (14a, 14b) are formed by the inclination of the paper holding bar 25, respectively. 26b), and elastic members (16a, 16b) for receiving the pressed base paper are respectively attached thereto. The base paper is pressed and fixed satisfactorily by pressing against the elastic member.

  During the paper splicing operation, the paper pressing bar 25 is inclined with respect to one set table 13a or 13b that is positioned and fixed by the contact of the projection 22a or 22b of the table stopper 21, and is positioned upstream from the crimping surface 14a or 14b. Then, the new base paper is pressed against the elastic member 16a or 16b, and the pressing state is completed when the other set table 13b or 13a is rotated in the closing direction so that the two crimping surfaces are sandwiched between the old and new base paper. Until you do.

  After the pasting of the old and new base papers is completed, the paper holding bar 25 is inclined to the opposite side and presses the old base paper at the position upstream of the crimping surface 14b or 14a against the elastic member 16b or 16a of the other set table 13b or 13a. The pressed state is maintained until completion of cutting by the old base paper cutter 17b or 17a.

  Therefore, according to the paper pressing bar 25 in the present embodiment, the pressing operation of the base paper by the inclination toward one set table and the pressing and releasing operation of the base paper with respect to the other set table are simultaneously performed with one action. Further, a presser bar lever 28 communicating in an L-shape is provided at the lower end of the paper presser bar 25 in the vicinity of the rotation center 27, and the paper presser bar 25 is driven by driving the lever 28 in the vertical direction. The upper part is rotated and tilted in the left-right direction.

  In the paper splicing device 1 of the present embodiment having the above-described configuration, each unit in the paper splicing unit 10 takes the states shown in FIGS. 3 to 8 as described below according to the paper splicing operation. In the following description, the base paper P from the base paper roll 4a supported by the left side roll hook 3a among the left and right roll hooks is used as the old base paper, and the base paper roll 4a supported by the right roll hook 3b is the new base paper roll. As prepared.

  The setting of the new base paper is performed during the line transport of the old base paper P. First, as shown in FIG. 9B, the old base paper P introduced into the splicing unit 10 from the old base paper roll 4a A part of the guide roll 18a reaches the upper nip roll 12, passes through the upper half circumference of the nip roll 12 downwardly through the roll gap with the drive roll 11, and further passes through the lower half circumference of the drive roll 11 and the upper right about 1 / 4 It is continuously sent to the entrance side of the accumulator 5 in the left direction after going around 4 laps. During this time, the left set table 13a is rotated by a predetermined angle in the opening direction, and is in a retracted state such that the crimping surface 14a is located at a certain distance from the vertical surface 20.

  A splicing command is given to a controller (not shown) that controls the operation of the paper splicing device 1 to start a paper splicing operation. Before starting the sheet splicing operation, both the movable roll group 8 is moved in the direction away from the fixed roll group 7 in the accumulator 5 to obtain a time required for the sheet splicing operation. Base paper is stored.

  Further, as a pre-preparation step before starting the paper splicing operation, the paper splicing unit 10 is moved immediately above the new raw paper roll 4b, and the right set table 13b is rotated in the opening direction (clockwise) as shown in FIG. To the set position. The leading edge of the new base paper from the new base paper roll 4b is manually moved from the lower side of the guide roll 18b near the rotation center of the right set table 13b in the open state to the paper pressing bar 25 from the left side of the set table 13b. It is pulled out through the periphery of the table 13b until it exceeds the crimping surface 14b.

  By driving the stopper lever 24 in the upward direction, the table stopper 21 is rotated by a predetermined angle to the right, and the upper portion thereof is inclined to the right. Next, as shown in FIG. 4, the right set table 13b is rotated in the closing direction (counterclockwise) while the right side inclined state of the table stopper 21 is maintained, but the right side of the right side inclined table stopper 21 is rotated. When the stopper receiving portion 15b comes into contact with the protrusion 22b, its rotation is restricted, and at the same time, the crimping surface 14b is positioned on the vertical surface 20.

  Next, as shown in FIG. 5, the presser bar lever 28 is driven downward to rotate the paper presser bar 25 to the right and the upper part thereof is tilted to the right, whereby the right protrusion 26b is moved to the right set table. The new base paper is pressed against the elastic member 16b of 13b and fixed so as not to be displaced. A double-sided adhesive tape is affixed across the entire width on the upper surface of the region located on the pressure bonding surface 14b of the fixed new base paper.

  When the above-described new base paper setting process is completed and a splice command is given from the controller, the old base paper roll 4a, the drive roll 11 and the nip roll 12 in the paper splicing unit 10 are braked, and at the same time, the nip roll 12 is driven to the drive roll 11 It is pressed against the old base paper P traveling on the top. At this time, since the nip roll 21 is pressed against the drive roll 11 via the old base paper P while maintaining the rotation at the same peripheral speed as the base paper traveling speed, the tension fluctuation does not occur even if the old base paper P is sandwiched between both rolls. The state is suppressed as much as possible, and no breakage occurs when the supply of old base paper to the accumulator 5 is stopped by braking both rolls.

  As described above, even if the supply of the old base paper to the accumulator 5 is stopped, the movable side roll group 8 moves so as to be close to the fixed side roll group 7 so as to maintain the output side line speed. In order to compensate the outgoing line speed, the supply of the base paper from the accumulator 5 to the corrugating machine is continued, and all the following paper splicing operations are performed during that time.

  When the rolls in the splicing unit 10 and the old base paper roll 4a are stopped at the entrance side of the accumulator 5, the left set table 13a in the retracted state rotates in the closing direction as shown in FIG. Then, the pressure bonding surface 14a sandwiches the old and new base papers between the vertical surface 20 and the pressure bonding surface 14b of the right set table 13b. By this clamping, the pasting of the old base paper P and the new base paper is completed via the double-sided adhesive tape.

  As shown in FIG. 7, the paper pressing bar 25 is rotated to the left side by driving the pressing bar lever 28 upward in the sandwiched state between the both crimping surfaces (14 a, 14 b). As a result, the upper portion of the paper pressing bar 25 is inclined to the left, and the left protrusion 26a presses the old base paper P against the elastic member 16a of the left set table 13a. At the same time, the pressing of the new base paper against the elastic member 16b of the right set table 13b is released.

  The old base paper P is pulled between the pressure-bonding surfaces (14a, 14b) by the pressing of the left protrusion 26a against the elastic member 16a, and is in a tension state. At the tension portion T of the old base paper P, the cutter 17a is operated in a direction in which the blade is orthogonal to the base paper surface, and the old base paper P is cut at the rear end of the bonded portion with the new base paper.

  After cutting the old base paper P, as shown in FIG. 8, the right set table 13 b is rotated by a predetermined angle in the opening direction, so that the crimping surface 14 b is separated from the vertical surface 20 to some extent, and immediately the drive roll 11 and the nip roll 12 and the rotation of the new base paper roll 4b are started, and the new base paper is sent to the line. The left set table 13a is also retracted and returned to the state shown in FIG. 2, and when the new raw paper transport speed on the inlet side of the accumulator 5 reaches the line speed after a given acceleration time, the compensation operation of the accumulator 5 is completed. Are all completed, and a normal base paper conveyance state is obtained.

  After that, when it is time to replace the right base paper roll 4b, the left base paper roll 4a is used as a new base paper roll in the paper splicing unit 10 with the above-described FIGS. Needless to say, the same paper splicing operation as described above is performed.

1: Paper splicing device 2: Mill roll stand 3a: Left roll hook 3b: Right roll hook 4a, 4b: Base paper roll 5: Accumulator 6: Frame 7: Fixed side roll group 8: Movable side roll group 10: Paper splicing unit 11 : Drive roll 12: Nip roll 13a: Left set table 13b: Right set table 14a, 14b: Crimp surface 15a, 15b: Stopper receiving portion 16a, 16b: Elastic member 17a, 17b: Cutter 18a: Left guide roll 18b: Right guide roll 20: Vertical surface 21: Table stopper 22a: Left protrusion 22b: Right protrusion 23: Table stopper rotation center 24: Stopper lever 25: Paper pressing bar 26a: Left protrusion 26b: Right protrusion 27: Turn of paper pressing bar Moving center 28: Lever for holding bar

Claims (2)

A second base paper supported by the other of the roll hooks on the old base paper conveyed downstream from the first base paper roll supported by either one of the pair of roll rolls of the mill roll stand. In the paper splicing device for splicing the leading edge of the new base paper drawn from the roll on the upstream side of the accumulator,
A paper splicing unit supported so as to be able to reciprocate in parallel with the base paper transport direction of the accumulator at an upstream position of the accumulator;
The paper splicing unit is brought into pressure contact with the drive roll that feeds the base paper to the accumulator via the old base paper on the drive roll at the time of paper splicing, thereby stopping the rotation of the drive roll and stopping the feeding of the old base paper from the paper splicing unit. A pair of nip rolls for rotation and a drive roll and a base paper being conveyed at a position upstream of the nip roll, and a pair of the rolls arranged so that the upper parts can be opened and closed in the approaching and separating directions with the lower part as the rotation center. The lower rotation center is positioned on the vertical plane between the set table and the pair of set tables, and the upper portion thereof is erected so as to be inclined at predetermined angles from the vertical plane toward the left and right set tables. The table stopper and the lower center of rotation of the table stopper coaxially with the center of rotation of the table stopper. Parts and paper pressing bars juxtaposed with said table stopper tiltably on both right and left set table direction from the vertical plane, been equipped,
The pair of set tables has a pair of pressure-bonding surfaces that have a predetermined interval between the lower portions of each other, and sandwich the pasted portions of the old and new base papers from both sides on the vertical surface during paper joining. It has an upper part and is equipped with a cutter for cutting old base paper after paper joining, and constitutes a symmetrical splice mechanism with the vertical plane in between,
The table stopper is tilted and moved within an area that does not interfere with the paper being transported, and one or the other of the table stopper rotates in the closing direction while tilting toward the other set table. The crimping surface of the set table is positioned and fixed on the vertical surface by abutting against the other set table and restricting its rotation, and close to one or the other set table. It does not interfere with the other or one set table,
The paper holding bar is inclined and moved in an area where it does not interfere with the paper being conveyed, and is inclined with respect to one or the other set table positioned and fixed by the contact of the table stopper during the paper splicing operation. The new base paper is pressed at a position upstream from the crimping surface, and the pressed state is maintained until the pasting of the old and new base papers between the two crimping surfaces by the rotation of the other or one set table in the closing direction is completed, After completion of bonding, the old base paper is inclined at the opposite side of the other settable or one of the set tables, and the old base paper is pressed at a position upstream from the crimping surface, and the pressed state is maintained until the cutting of the old base paper is completed. Paper splicer.   The base paper heading from the paper splicing unit to the accumulator is wound around the nip roll and the drive roll in an S-shape for more than half a circumference, and both the nip roll and the drive roll are synchronized with the travel speed of the base paper during transport of the base paper. 2. The paper splicing device according to claim 1, wherein a driving device is provided that rotates in opposite directions at a high speed and presses the nip roll against the drive roll while maintaining the rotation when the drive roll is stopped.

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