JP4944004B2 - Web winding device - Google Patents

Description

  The present invention relates to a web winding device.

  2. Description of the Related Art Conventionally, there has been proposed a device that performs a process such as drying and coating on a web of film, foil, paper, and the like and winds the web (for example, see Patent Document 1).

This winding device has two shafts, and replaces an old shaft that is nearing the end of winding of a web with a new shaft on which the web is not wound by rotating an arm that rotatably supports these shafts. Thus, the running web can be continuously wound.
JP-A-5-124755

  In the winding device as described above, since the web wound on the old shaft was cut with a saw blade, the cutting portion of the web wound on the new shaft became a zigzag, There was a problem that the web on which the web was wound was marked with traces, resulting in a loss of the web.

  In addition, there is a problem in that dust is generated when cutting with a saw blade.

  Further, there is a method of cutting the web on the new shaft with a traveling blade different from the saw blade, but this method has a problem that the new shaft is damaged and dust is generated.

  Accordingly, in view of the above problems, the present invention provides a web winding device in which a cut portion of a web wound around a new shaft is cut in a straight line along the width direction and the new shaft is not damaged.

  In the present invention, two shafts for winding a web are rotatably mounted between a pair of arms, and the web is not wound from an old shaft that is nearing the end of winding of the web. In a web winding apparatus for rotating and replacing the arm on the shaft, the web that travels during the replacement from the old shaft to the new shaft is accommodated, and the travel of the web supplied to the new shaft is stopped. From the accommodating portion, a pressing roll that presses the stopped web against the new shaft, a suction portion that sucks and fixes the stopped web from the pressing position of the new shaft toward the old shaft, and the suction portion A cutting part that cuts the stopped web between the old shafts in the width direction, and the new shaft is rotated in a direction opposite to the running direction of the web while the cut webs are sucked by the suction part. On the outer periphery of the new shaft. A reversing control unit for adhering the adhesive portion to the tip of the web at the pressing position, and after the web tip is attached to the new shaft, restarting the web and stopping the accommodation of the web, The web winding device includes: a normal rotation control unit configured to rotate the new shaft again in the traveling direction and wind the web around the new shaft.

  According to the present invention, since the web is cut in the width direction by the cutting portion while the stopped web is sucked by the suction portion, the web is cut along the width direction of the web, and the new shaft may be damaged. Absent. Also, no garbage is generated.

  Further, after the web is cut, the cut portion is held by the suction portion and bonded to the bonding portion of the new shaft, so that the web can be bonded to the new shaft without distortion.

  Hereinafter, a web W winding device 10 according to an embodiment of the present invention will be described with reference to FIGS. The web W of this embodiment is a film, foil, paper, etc., for example.

(1) Configuration of Winding Device 10 The configuration of the winding device 10 will be described with reference to FIGS.

  The winding device 10 includes a device main body 12, a dancer device 14, and an accumulator device 16.

  In the apparatus main body 12, a support shaft 21 is provided on a support leg 20 erected from a support base 18, and four sets of arms 22, 24, 25, and 27 are attached every 90 degrees around the support shaft 21. . A shaft 26 for winding the web W is rotatably mounted on the pair of arms 22 and 22, and a shaft 28 for winding the web W is rotatably mounted on the pair of arms 24 and 24. A guide roll 30 is rotatably mounted on the pair of arms 25 and 25, and a guide roll 32 is rotatably mounted on the pair of arms 27 and 27. In the following description, for ease of understanding, the shaft 26 is referred to as the old shaft 26 and the shaft 28 is referred to as the new shaft 28.

  The apparatus main body 12 has a cutting arm 34. When the web W is replaced from the old shaft 26 to the new shaft 28, the cutting arm 34 is moved from the standby position to the operating position to cut the web W. The cutting arm 34 includes a guide roll 36, a traveling cutter 38, and a suction unit. Part 40 and first pressing roll 42.

  Further, the apparatus main body 12 has a pressing arm 44, and has a second pressing roll 46 at the tip of the pressing arm 44. The second pressing roll 46 also moves from the standby state to the operating position only when the web W is cut.

  The dancer device 14 is composed of a first fixed roll 48, a moving roll 50, and a second fixed roll 52, and detects the position of the moving roll 50, thereby controlling the tension of the web W or the new shaft 26 or the new roll. Adjust the speed of shaft 28 or accumulator 16.

  The accumulator 16 includes a fixed roll group 56 composed of four fixed rolls 54 whose positions are fixed, and a movable roll group 60 composed of three movable rolls 58 that move integrally in the vertical direction. The accumulator 16 can accommodate a predetermined amount of the web W by moving the moving roll group 60 downward.

(2) Outline of Operation of Winding Device 10 First, an outline of the operation of the winding device 10 will be described with reference to FIGS. 1 and 2.

  The web W after the heat treatment and the like is wound around the old shaft 26 through the accumulator 16 and the dancer device 14. In this case, the old shaft 26 rotates at a predetermined speed and winds the web W. Then, the amount of winding is detected by a sensor, and when the reference value is exceeded, it is determined that a full winding state is reached, and the arms 22, 24, 25, 27 are rotated about the support shaft 21 counterclockwise.

  Next, the cutting arm 34 is moved to the operating position from the standby position and the pressing arm 44, respectively.

  Next, the running web W supplied from the heat treatment apparatus is accommodated using the accumulator device 16 and the dancer device 14, and the running of the web W supplied to the apparatus main body 12 is stopped. In this case, the capacity of the web W is increased by lowering the moving roll group 60 of the accumulator 16, and when the capacity is finely adjusted, the capacity is determined by the position signal of the moving roll 50 of the dancer apparatus 14. Adjust.

  Next, after the suction unit 40 sucks the web W in the cutting arm 34, the web W is cut in the width direction by the traveling cutter 38.

  Next, the new shaft 28 is rotated in the direction opposite to the traveling direction, the tip of the cut portion of the web W is attached to the adhesive portion 62 on the outer periphery of the new shaft 28, and the new shaft 28 is rotated again in the traveling direction. Wrap the web W around. At this time, the operation of accommodating the web W of the accumulator device 16 is completed. The dancer device 14 outputs a position signal to the new axis 28 and adjusts the rotational speed of the new axis 28.

  By performing the operation as described above, the web W wound around the old shaft 26 can be wound around the new shaft 28 without stopping the traveling of the web W ahead of the accumulator 16.

(3) Detailed description when cutting the web W Next, a detailed description when cutting the web W will be described with reference to FIGS.

  In the first step, as shown in FIG. 3, the web W is stretched around the new shaft 28 in a state where the running of the web W is stopped by the operation of the dancer device 14 and the accumulator device 16. At this time, the web W is pressed against the new shaft 28 by the first pressing roll 42 and the second pressing roll 46, and the web W from the new shaft 28 toward the old shaft 26 is directed toward the old shaft 26 through the guide roll 36. . At this time, the new shaft 28 stops rotating, and an adhesive portion 62 is provided on the outer periphery thereof.

  In the second step, the stopped web W between the guide roll 36 and the first pressing roll 42 is sucked and fixed by the suction unit 40.

  In the third step, as shown in FIG. 4, with respect to the web W fixed by the suction unit 40, a portion between the suction unit 40 and the guide roll 36 is cut in the width direction by the traveling cutter 38. At this time, since the web W is stopped and fixed by the suction portion 40, the web W can be cut in a straight line along the width direction and is not inclined. Further, since the cutting is performed in the traveling path, the new shaft 28 is not damaged as in the conventional case.

  In the fourth step, as shown in FIGS. 5 and 6, the cut web W is moved in the direction opposite to the traveling direction, and the new shaft 28 is rotated in the direction opposite to the traveling direction. As a result, the adhesive portion 62 rotates in the direction of the web W, and when the adhesive portion 62 is positioned between the first pressing roll 42 and the new shaft 28, the adhesive portion 62 presses against the tip of the cut portion of the web W. Then, the tip of the cut portion of the web W is fixed to the new shaft 28. At this time, the suction unit 40 moves the web W in the direction opposite to the traveling direction while sucking the cut portion of the web W. Accordingly, the cut portion of the web W does not hang down, and the adhesive portion 62 can be attached to the tip of the cut portion of the web W. In order to realize this, the rear end portion of the suction portion 40 is extended to the vicinity of the contact portion between the first pressing roll 42 and the new shaft 28. And when the front-end | tip of the cutting part of the web W remove | deviates from the suction part 40, the suction of the suction part 40 is stopped. When the new shaft 28 is rotated in the opposite direction, the adhesive portion 62 is detected at the optical sensor or other position detection position, and the adhesive portion 62 is rotated until it passes through the position of the first pressing roll 42. Set the rotation angle or rotation time.

  Next, in the fifth step, as shown in FIG. 7, the new shaft 28 is rotated again in the running direction, the accommodation of the dancer device 14 and the accumulator device 16 is released, and the web W is run at a normal speed. . As a result, the web W starts to be wound around the new shaft 28. At this time, the pressing arm 44 and the cutting arm 34 are moved to the standby position.

(4) Effect With the winding device 10 of the present embodiment as described above, when the web W toward the old shaft 26 is cut, the width of the web W is fixed by the traveling cutter 38 after the web W is fixed by the suction portion 40. Since it is cut in a straight line along the direction, it is not zigzag like in the past, and it can be cut in a straight line along the width direction, and the tip of the cut portion of the web W is bonded to the new shaft 28. Can do. Therefore, the web W can be wound around the new shaft 28 without wrinkles, and the loss of the web W can be minimized.

  Further, since the web W is cut in the traveling path, the new shaft 28 is not damaged and dust is not generated.

  Further, after the web W is cut, the cut portion is held by the suction portion 40 and bonded to the bonding portion 62 of the new shaft 28. Therefore, the web W can be bonded to the new shaft 28 without distortion.

(5) Modification Examples The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof.

It is explanatory drawing of the winding apparatus of one Embodiment of this invention, Comprising: It is the state which has wound the web W around the old axis | shaft. It is explanatory drawing of the state which is similarly changing from the old axis to the new axis. It is an enlarged view near the new axis in the first step. It is an enlarged view near the new axis of the 3rd process. It is an enlarged view near the new axis in the first half of the fourth step. It is an enlarged view of the new axis vicinity of the latter half part of a 4th process. It is an enlarged view near the new axis of the 5th process.

Explanation of symbols

W Web 10 Winding device 12 Device body 14 Dancer device 16 Accumulator device 22 Arm 26 Old shaft 28 New shaft 30 Guide roll 32 Guide roll 36 Guide roll 38 Traveling cutter 40 Suction part 42 First pressing roll 46 Second pressing roll

Claims (3)

Two shafts for winding the web are rotatably mounted between the pair of arms, and the two of the two shafts are changed from the old shaft near the end of winding of the web to the new shaft where the web is not wound. In the web winding device that rotates and replaces the arm,
A housing portion that accommodates a web that travels while changing from the old shaft to the new shaft, and stops traveling of the web that is supplied to the new shaft;
A pressing roll that presses the stopped web against the new shaft;
A suction part for sucking and fixing a stopped web from the pressing position of the new shaft toward the old shaft;
A cutting part for cutting the stopped web between the suction shaft and the old shaft in the width direction;
While the cut web is sucked by the suction portion, the new shaft is rotated in a direction opposite to the traveling direction of the web, and the adhesive portion on the outer peripheral portion of the new shaft is moved to the front end portion of the web at the pressing position. Reversing control unit to be attached to,
After the tip of the web is attached to the new shaft, the web travel is resumed, the accommodation of the web is stopped, the new shaft is rotated again in the travel direction, and the web is wound around the new shaft. Forward rotation control unit,
A web winding device comprising: The inversion control unit detects the position of the adhesive portion on the new axis with a sensor,
Based on the detected position, an angle or time for rotating the new axis in the opposite direction is determined.
The web winding device according to claim 1. The suction part is extended to the vicinity of the pressing position of the new shaft,
The web winding device according to claim 1.

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