JP5053817B2 - Tape sticking device - Google Patents

Description

  The present invention relates to a tape sticking device for continuously sticking a tape to a traveling sheet such as a cardboard sheet.

  A box made of a sheet such as a corrugated cardboard sheet may be affixed with a tape that goes around its inner peripheral surface. This tape is affixed as a cut tape that opens by cutting and removing the upper part of the box without using a blade, or a reinforcing tape that reinforces the hand hole on the side of the box. These tapes are coated with an adhesive on one side. When continuously forming sheets such as corrugated cardboard sheets, the tape is placed on one side of the sheet by a tape applicator placed on the sheet transfer line. It is affixed continuously.

  The tape sticking apparatus includes a reel that pulls out and supplies the tape, a sheet that runs in one direction, and a touch roll that moves forward and backward so as to make rolling contact from above, and the tape that is drawn from the reel by the touch roll that makes rolling contact with the sheet. Is attached to the traveling sheet (see, for example, Patent Document 1). In the device described in Patent Document 1, a brake is provided on the reel so that the tape drawn from the driven rotating reel does not loosen. Some of them also serve as a brake and are provided with means for rotating the reel.

  In such a tape sticking device, in order to stably stick the tip of the flexible and non-rigid tape to the sheet, the tip of the tape is attached to the rear side of the strip-shaped lead piece formed of cardboard, etc. This lead piece is pressed against the sheet under the touch roll that is in rolling contact with the traveling sheet from above, and is caused to travel with the sheet by friction with the sheet, and the tape following the lead piece is pressed against the traveling sheet with the touch roll. There is what was made to stick (for example, refer to patent documents 2).

  In the one described in Patent Document 2, the center portion of the lead piece is lifted by vacuum suction, and the front and rear ends are held under two touch rolls arranged in series in the running direction of the sheet. While abruptly pressing the touch roll toward the traveling sheet, the vacuum suction is released and the sheet is traveled with the sheet.

Japanese Patent Publication No. 6-71974 JP 2000-198150 A

  In the tape sticking device described in Patent Document 2, the lead piece held by vacuum suction under the touch roll is abruptly pressed against the sheet traveling at a high speed by the touch roll, so that it is held and stopped. The lead piece that has been running starts to run suddenly together with the sheet, and an excessively large tension is instantaneously generated on the tape following the lead piece at the start of tape application. That is, due to the inertial force and braking of the reel, the tape pulling speed from the reel does not immediately match the sheet running speed, so that an excessive tension is generated on the tape between the reel and the touch roll. For this reason, there exists a problem that a tape cut | disconnects or the front-end | tip of the tape affixed on the sheet | seat remove | deviates.

  Accordingly, an object of the present invention is to prevent excessive tension from being generated on the tape at the start of tape application.

  In order to solve the above-mentioned problems, the present invention is directed to a reel that pulls out and feeds a tape coated with an adhesive on one side that is affixed to a sheet traveling in one direction, and advancing and retreating so as to make rolling contact with the traveling sheet from above. And a touch roll that attaches the tip of the tape to the rear side of the strip-shaped lead piece to hold the lead piece. When the tape starts to be applied, the touch roll is brought into contact with the sheet to hold the lead piece. In the tape sticking device for pressing the tape following the lead piece against the sheet running on the touch roll, the tape is pressed against the sheet under the touch roll, and travels with the sheet. In addition, a configuration was adopted in which a running feeding means for running and feeding to the lower side of the touch roll that was brought into contact with the sheet at the start of tape application was provided.

  That is, the feed speed of the tape following the lead piece and the lead piece is provided by providing a run-up feeding means that feeds the held lead piece to the lower side of the touch roll that is brought into contact with the sheet at the start of tape application. Was set close to the running speed of the sheet to prevent excessive tension on the tape at the start of tape application.

  The run-up feeding means is provided with an inclined descending path that descends obliquely toward the entrance side of the touch roll at the lower part of the descending path of the timing belt driven by the winding path in the vertical plane. Attach a holder that holds the front end side of the lead piece in the direction of travel of the timing belt, stop the timing belt at a standby position where the holder comes to the upper part of the descending path, and start the application of the tape. By driving the timing belt and feeding the lead piece held by the holder to the lower side of the touch roll and feeding it, the lead piece can be smoothly moved under the touch roll at a stable desired running speed. Can be sent to the side.

  The tape sticking device of the present invention is provided with the run-in feeding means that feeds the held lead piece to the lower side of the touch roll that is brought into contact with the sheet at the time of tape sticking start. In addition, excessive tension is not generated on the tape, and the tape can be prevented from being cut or detached from the tip of the tape attached to the sheet.

  The run-up feeding means is provided with an inclined descending path that descends obliquely toward the entrance side of the touch roll at the lower part of the descending path of the timing belt driven by the winding path in the vertical plane. Attach a holder that holds the front end of the belt toward the direction of travel of the timing belt, stop the timing belt at the standby position where the holder comes to the upper part of the descending path, and drive the timing belt at the start of tape application. Thus, the lead piece held by the holder is allowed to run to the lower side of the touch roll and fed, whereby the lead piece can be smoothly fed to the lower side of the touch roll at a stable desired running speed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the tape sticking device includes a reel 1 that pulls out and feeds a tape B to be stuck on a sheet A traveling in one direction, and an upper unit that includes a reel driving device 2 that rotationally drives the reel 1. The touch roll 4 is moved up and down by the cylinder 3 so as to be in rolling contact with the sheet A from above and is driven and rotated, and a holder 5 for the lead piece C as a lead-in feeding means for the lead piece C described later is attached and driven. A timing belt 7 wound around a roll 6a and a lower unit including a cutter 8 for cutting the tail end of the tape B are basically configured. The reel driving device 2, the cylinder 3 of the touch roll 4, And a driving roller 6a of the timing belt 7 is connected to a line computer and a speed sensor 9 for detecting the traveling speed of the seat A. It is adapted to be actuated by La 10.

  Two reels 1 are provided on the upper and lower sides for switching. In FIG. 1, the leading end of the tape B set on the upper reel 1 is pulled out via a dancer roll 11 and a guide roll 12 that absorb tension fluctuations. As will be described later, the lead piece C is attached to the rear side. An adhesive is applied to the inner surface of the tape B wound around the reel 1.

  The reel drive device 2 drives a pair of drive rolls 13 that are in rolling contact with the outer periphery of the tape B wound around the reel 1 by a motor 14 and can be advanced and retracted by a cylinder 16 along a horizontal guide rail 15. In addition, the cylinder 18 can be moved up and down along the vertical guide rail 17. In FIG. 1, the raising / lowering position is positioned according to the center of the upper reel 1 to be used, and the pair of drive rolls 13 are pressed against the outer periphery of the tape B set on the upper reel 1 by the cylinder 16.

  As shown in FIG. 2, the lead piece C is formed of a cardboard piece having a strip-like rigidity, and the tip of the tape B is adhered to the lead piece C on the surface to which the adhesive is applied. Is attached so as to extend to the rear side of the lead piece C. Further, on one side of the lead piece C, as will be described later, a double-sided adhesive tape D for transferring onto the sheet A running on the lead piece C is affixed.

  As shown in FIG. 3 (a), the timing belt 7 is wound around the drive roll 6a and the two driven rolls 6b in a vertical plane, and the ascending side path 7a of the winding path rises obliquely. The descending side path includes an upper vertical descending path 7b that descends vertically and a lower inclined descending path 7c that descends obliquely toward the entrance side of the touch roll 4 provided on the downstream side in the traveling direction of the sheet A. A holder 5 for holding the lead piece C is attached to the timing belt 7, and the tip of the tape B is attached to the rear side in a state where the holder 5 is stopped at a standby position at the top of the vertical descending path 7b. The rear end side of the strip-shaped lead piece C is held so as to be suspended from the holder 5.

  As shown in FIG. 4, the holder 5 is attached so as to project to the side of the timing belt 7. The projecting portion 5a has a U-shaped cross section, and a lead piece is formed on the projecting portion 5a of the U-shaped cross section. The rear end portion of C is inserted and held, the front end side thereof is directed downward in the traveling direction of the timing belt 7 in the vertical descending path 7b, and the surface to which the double-sided adhesive tape D is applied is the outer side of the timing belt 7 It comes to face. The overhang portion 5a is provided with a notch 5b through which the tape B attached to the rear side of the lead piece C is passed. Further, the timing belt 7 is also provided with a rod-like back support member 5c that projects to the back side of the lead piece C below the holder 5 so that the lead piece C is inclined to the inside of the winding path of the timing belt 7. It comes to prevent.

  As shown in FIG. 3 (b), when the tape B starts to be applied, the touch roll 4 is driven forward to roll down to the sheet A, and when the timing belt 7 is started, the upper part of the vertical descending path 7b is The lead piece C held by the holder 5 at the standby position runs along the vertical descending path 7b and the inclined descending path 7c so as to be accelerated to substantially the same speed as the traveling speed of the seat A, and the front end side is inclined down. The sheet 7 is smoothly fed to the lower side of the touch roll 4 in an obliquely downward direction along the traveling direction toward the downstream side in the traveling direction of the sheet A on the path 7c. The front end side of the lead piece C holding the rear end side faces downward from the traveling direction of the inclined descending path 7c due to its inertia weight.

  As shown in FIG. 3 (c), the lead piece C fed to the lower side of the touch roll 4 is extracted forward from the holder 5 and transferred to the surface of the sheet A with the double-sided adhesive tape D. Travel with the seat A. Therefore, the tape B following the lead piece C is pressed by the touch roll 4 and stuck to the sheet A. The holder 5 from which the lead piece C has been removed stops at the upper part of the ascending path 7a, and is moved to the standby position at the upper part of the vertical descending path 7b shown in FIG.

  FIG. 5 shows a control flowchart when the controller 10 starts applying the tape B. First, the controller 10 sets the driving speed of the reel driving device 2 and the timing belt 7 to a value slightly lower than the traveling speed of the sheet A based on the output of the speed sensor 9, and applies the tape B from the line computer. When the command is input, the operation signal of the touch roll 4 is output, and the start time of the reel driving device 2 and the timing belt 7 is paralleled in anticipation of the moving time from the standby position of the lead piece C to the tape application start position. After the cylinder 3 of the touch roll 4 is operated, the drive roll 13 of the reel driving device 2 and the drive roll 6a of the timing belt 7 are rotated at a set speed.

  When the touch roll 4 is brought into rolling contact with the sheet A and the lead piece C held by the holder 5 of the timing belt 7 is sent to the lower side of the touch roll 4, the controller 10 raises the holder 5. When the driving of the timing belt 7 is stopped at a position that comes to the upper part of the side path 7a, and the leading end of the tape B following the lead piece C is adhered to the sheet A, the control of the reel driving device 2 is performed as described above. The speed control based on the travel speed of the sheet A is switched to the tension control that adjusts the tension of the tape B based on the movement of the dancer roll 11.

Notched front view showing an embodiment of a tape applying device The perspective view which shows the lead piece attached to the front-end | tip of a tape a, b, and c are front views for explaining the operation of the timing belt as the approaching feeding means of FIG. The perspective view which shows the state which hold | maintained the lead piece in the holder of FIG. Control flow chart of the tape sticking device of FIG.

Explanation of symbols

A Sheet B Tape C Lead piece D Double-sided adhesive tape 1 Reel 2 Reel drive device 3 Cylinder 4 Touch roll 5 Holder 5a Overhang 5b Notch 5c Backing member 6a Drive roll 6b Follower roll 7 Timing belt 7a Ascending side path 7b Vertical Lowering path 7c Inclined lowering path 8 Cutter 9 Speed sensor 10 Controller 11 Dancer roll 12 Guide roll 13 Drive roll 14 Motor 15 Guide rail 16 Cylinder 17 Guide rail

Claims (1)

A reel that pulls out and feeds a tape coated with an adhesive on one side that is attached to a sheet traveling in one direction; and a touch roll that moves forward and backward so as to make rolling contact with the traveling sheet from above. The lead piece is attached to the back side of the lead piece, and the lead piece is held. At the start of tape application, the touch roll is brought into contact with the sheet, and the held lead piece is pressed against the sheet under the touch roll together with the sheet. In a tape sticking device that travels and presses and affixes the tape following the lead piece to the sheet running by the touch roll, the held lead piece is rolled to the sheet at the start of tape sticking. to lower touch roll, the run-up feed means for feeding by approach provided, said run-up feeding means is driven by a winding path in the vertical plane data An inclined descending path that descends obliquely toward the entrance side of the touch roll is provided at the lower part of the descending path of the ming belt, and the timing belt is held to hold the front end side of the lead piece in the traveling direction of the timing belt. Attach a tool, stop the timing belt at the standby position where the holder comes to the upper part of the descending path, drive the timing belt at the start of tape application, and hold the lead piece held on the holder, A tape sticking device for running and feeding to the lower side of the touch roll.

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