JP2011105408A - Winding device and winding method for band - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding device which prevents a band from being poorly wound up by a winding shaft, while reducing the size of the device on the whole and simplifying control. <P>SOLUTION: This winding device 17 includes the winding shaft 32 capable of winding up a band-shaped release sheet RL, a motor M2 for rotating the winding shaft 32, a tension imparting means 34 having a displacement body 37 which is displaced when a tension is applied to the release sheet RL before the release sheet is wound up by the winding shaft 32, a sensor 35 for detecting the displacement body 37, and a control means 36 for controlling the motor M2, the sensor 35, and the like. The control means 36 controls the motor M2 by obtaining the rotational speed and/or the rotational torque of the winding shaft 32 driven by the motor M2 during the next intermittent winding based on the displacement time of the displacement body 37 in one intermittent winding immediately before the control. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a winding device and a winding method for a belt-shaped body, and more particularly to a winding device and a winding method for a belt-shaped body that can wind the belt-shaped body by rotating a winding shaft.

  2. Description of the Related Art Conventionally, a winding device that can wind up a belt-like body made of a release sheet or the like after an adhesive sheet has been peeled has been widely used. As such a winding device, one having a winding shaft for winding a belt-like body and a driving means for rotating the winding shaft is known (see Patent Document 1). When winding the belt-like body with the winding shaft, if the rotational speed of the winding shaft is increased or the rotational torque is increased from the beginning of winding, the belt-like body is tightly wound around the winding shaft, and the winding shaft It becomes difficult to remove the belt wound around. On the other hand, if the rotational speed of the winding shaft is slowed or the rotational torque is reduced, the belt-like body wound around the winding shaft will lose its shape during winding and cause winding failure. Further, as shown in FIG. 2, when the driving roller 52 and the pinch roller 53 for feeding the strip RL are arranged in the vicinity of the take-up shaft 50, the pinch roller 53 goes to the take-up shaft 50. Not only is the belt-like body RL slackened (see the two-dot chain line in the figure), but the slackened belt-like body RL is caught between the driving roller 52 and the pinch roller 53, and this may cause a winding failure. .

  Here, in order to satisfactorily wind the belt-like body with the winding shaft, a method of controlling the rotation by setting in advance so that the rotational speed and torque of the winding shaft gradually increase (hereinafter referred to as “conventional method A”). "). According to this, it is possible to suppress a decrease in the winding speed and the rotational torque accompanying an increase in the winding diameter of the belt-like body wound around the winding shaft.

JP-A-2005-116929 Utility Model Registration No. 2590661

  By the way, in the case of a type in which the lead end side of the strip RL is fixed using a pin 60A as in the winding shaft 60 shown in FIG. 3, for example, the strip RL is not circular but is wound in a cam shape. As a result, the diameters R1 and R2 are not uniform. When winding is performed by the conventional method A using the winding shaft 60 of the figure, the winding speed and the rotational torque are not transmitted to the strip-shaped body RL before winding as ideal due to changes in the diameter dimensions R1 and R2. As a result, there is an inconvenience that it is difficult to avoid winding failure.

Here, in Patent Document 2, a winding shaft that recognizes the winding diameter of the belt-like body by a sensor having a touch roll in contact with the wound belt-like body so that the tension of the belt-like body is constant. The rotation is controlled.
However, in the same document, not only the size of the entire apparatus is increased by a touch roll or the like, but also data such as how many rotation speeds and rotation torques are set depending on the winding diameter of the material is necessary, and the material is changed. Each time, the data suitable for the material must be replaced, resulting in inconvenience that the control becomes complicated and a great deal of labor must be expended.

[Object of invention]
The present invention has been devised by paying attention to such inconveniences, and an object of the present invention is to prevent winding failure when winding a belt-like body on a winding shaft, and the entire apparatus. It is an object of the present invention to provide a winding device and a winding method for a belt-like body capable of reducing the size and simplifying the control.

In order to achieve the above object, the present invention stops the belt-like body intermittently fed by repeating the feeding operation and the stop at a predetermined interval while stopping the belt-like body while the belt-like body is stopped. A winding shaft that can be intermittently wound by winding the belt-like body for a predetermined length, a driving means that applies a rotational force to the winding shaft, and tension that is applied to the belt-like body before the winding shaft. In addition, the tension applying means having a displacement body displaced by intermittent feeding and intermittent winding of the belt-like body, the function of controlling the rotational speed and / or rotational torque of the driving means, and the displacement time of the displacement body are measured. And a control means including a function to
The control means determines the rotational speed and / or rotational torque of the next drive means on the basis of the displacement time during which the displacement body is displaced during a predetermined timing due to the winding of the belt-like body by the previous winding shaft. Adopted.

  In the present invention, it is preferable to employ a configuration further including a detection unit capable of detecting the position of the displacement body.

  Further, the control means compares the displacement time of the previous displacement body as the previous displacement time with the reference time, and if the previous displacement time is longer than the reference time, it increases the rotational speed and / or the rotational torque of the next drive means. When the previous displacement time is shorter than the reference time, a configuration may be adopted in which control is performed to reduce the rotational speed and / or rotational torque of the next drive means.

  Further, the winding method of the present invention is a step of intermittently feeding the belt-like body by repeating the feeding operation and stop at a predetermined interval, and the intermittently fed belt-like body is driven by a driving means, While the belt-like body is stopped during the feeding operation, the belt-like body is intermittently wound by winding the belt-like body with a winding shaft of a predetermined length while the belt-like body is stopped; Applying tension to the body and applying tension using a displacement body that is displaced by intermittent feeding and intermittent winding of the belt-like body, and winding of the belt-like body by the previous winding shaft between predetermined timings The step of measuring the displacement time for which the displacement body is displaced, the step of determining the rotational speed and / or rotational torque of the next drive means based on the measured displacement time, and the driving at the determined rotational speed and / or rotational torque Driving means Performing the step of winding the strip in the winding shaft Te, it adopts a method called.

According to the present invention, since the displacement means for applying tension to the belt-like body is measured to control the driving means, the conventional touch roll can be omitted, and the apparatus can be made compact. Further, since the displacement time of the displacement body is measured, it is possible to easily detect the change in the winding speed and the rotational torque of the belt-like body according to the change in the winding diameter from the displacement time. Thereby, even if the winding diameter of the belt-like body changes, the tension can be kept stable and constant, and the above-described defective winding onto the winding shaft can be solved.
In addition, since the rotational speed and / or rotational torque of the next drive means is only determined on the basis of the displacement time during which the displacement body is displaced at a predetermined timing by the previous winding of the belt-like body, the rotational speed or Data such as how many rotational torques are set is no longer necessary, and the control can be simplified by avoiding complication of the control.

The schematic front view of the sheet sticking apparatus using the winding device which concerns on embodiment. Explanatory drawing of the malfunction of the winding device which concerns on a prior art example. Explanatory drawing of the malfunction of the winding device which concerns on another prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In FIG. 1, a sheet sticking device 10 according to the embodiment includes a feeding unit 11 that feeds out an original fabric R in which an adhesive sheet S is temporarily attached to a release sheet RL as a strip at a predetermined interval, and a predetermined adhesive sheet S. The printing means 12 for performing printing, the peel plate 13 for folding the release sheet RL and peeling the adhesive sheet S from the release sheet RL, and the adhesive sheet S peeled by the peel plate 13 are pressed against the adherend W. And a pressing means 15 for pasting, and a winding device 17 for winding the release sheet RL from which the adhesive sheet S has been peeled off by the peel plate 13. The adherend W is transported in the left direction in FIG. 1 by a transport means 19 including a belt conveyor.

  The feeding means 11 includes a support shaft 22 that supports the raw roll R wound in a roll shape, and a drive roller 23 and a pinch roller that sandwich the release sheet RL fed from the support shaft 22 and passed through the peel plate 13. 24 and a sensor Se that detects the adhesive sheet S fed on the peel plate 13 at a predetermined position. The release sheet RL is intermittently fed by repeating the feeding operation and stopping at a predetermined interval via the driving roller 23 by driving the motor M1.

  The printing means 12 includes a print head 26 located above the original fabric R before being fed to the peel plate 13, and a platen 27 provided below the original fabric R and sandwiching the original fabric R with the print head 26. Become. The print head 26 employs a known thermal printing device or the like, and detailed description thereof is omitted here.

  The pressing means 15 includes a suction head 29 capable of sucking and holding the adhesive sheet S with the lower surface serving as a suction surface, and a linear motion motor 30 that moves the suction head 29 up and down.

  The winding device 17 includes a winding shaft 32 that can wind up the release sheet RL, a motor M2 that serves as a driving unit that can rotate the winding shaft 32 intermittently, and a winding shaft 32 that passes through a pinch roller 24. A tension applying means 34 including a dancer roller 38 that abuts on the release sheet RL before being wound on the arm and an arm 39 that supports the release roller RL, and a displacement body 37 that is displaced by applying tension to the release sheet RL; A sensor 35 serving as a detecting means that is positioned between the roller 24 and the winding shaft 32 and detects an arm 39 of the displacement body 37, a print head 26, a linear motor 30, a motor M1, a motor M2, a sensor 35, and the like. And control means 36 for controlling. The winding shaft 32 is stopped during the operation (feeding operation) in which the release sheet RL is fed out from the feeding means 11, while the release sheet RL is wound by a predetermined length while the feeding of the release sheet RL from the feeding means 11 is stopped. Intermittent winding is performed by taking.

  The tension applying means 34 is connected between an arm 39 and a frame (not shown), and includes a spring member 40 as an urging means for applying an urging force to the arm 39 in a counterclockwise direction in FIG. The arm 39 has the center of the winding shaft 32 as the center of rotation, and can be rotated and displaced without following the winding shaft 32. Thereby, the displacement body 37 is displaced downward in FIG. 1 by the intermittent feeding operation of the feeding means 11, while being displaced upward in FIG. 1 by the intermittent winding operation of the winding shaft 32. .

  The control means 36 can be constituted by a sequencer, a personal computer or the like. The control means 36 is connected to an input means (not shown) such as an operation panel, and the input means can input operating conditions, data, and the like of each means. The control unit 36 has a function of inputting detection results from the sensor Se and the sensor 35 and a point in time when the detection result of the sensor Se is input to the control unit 36 (hereinafter referred to as “sheet detection timing”). Time until the detection result is input to the control means 36 (hereinafter referred to as “displacement body detection timing”), that is, displacement in which the displacement body 37 is displaced between predetermined timings by winding the release sheet RL by the winding shaft 32. A measuring means 36A for measuring time and a function for determining and controlling conditions such as rotation start and stop, rotation direction, rotation speed, and rotation torque of the motor M2 based on the displacement time are provided. In addition, the control means 36 is provided so that apparatus and means other than the winding device 17 can also be controlled. Specifically, the function of controlling the printing contents and printing timing by the print head 26, the support and release of the adhesive sheet S by the suction head 29 of the pressing means 15, the moving direction, moving amount, and movement of the linear motor 30 It has a function for controlling the speed and the like, and a function for controlling the rotation start and stop, the rotation direction, the rotation speed, and the rotation torque of the motor M1.

  Next, the overall operation of this embodiment will be described.

  As an initial operation, the original fabric R supported by the support shaft 22 is pulled out by a predetermined length, and as shown in FIG. 1, the original fabric R is wound around so as to be folded back at the tip of the peel plate 13. The original fabric R is passed between the pinch roller 24 and the original fabric R is wound around the dancer roller 38, and then the lead end of the original fabric R is fixed to the winding shaft 32. At this time, the displacement body 37 is located at the position (return limit) indicated by the symbol P0 indicated by the two-dot chain line in FIG.

  Thereafter, when power is supplied by a start switch (not shown), while the rotation of the motor M2 is locked and stopped, the driving roller 23 is rotated by the motor M1, and the print head 26 feeds out the original fabric R, while Printing is performed on the first adhesive sheet S1. At this time, the release sheet RL between the pinch roller 24 and the take-up shaft 32 is fed out so as to be loosened below the dancer roller 38 at the position indicated by the symbol P0. Next, when the first adhesive sheet S1 is detected by the sensor Se provided on the front end side of the peel plate 13, and when the detection result is input to the control means 36, the rotation of the motor M1 is locked and the original fabric R At the same time, the take-up shaft 32 is rotated by the motor M2, and the release sheet RL is taken up. As a result, the release sheet RL between the pinch roller 24 and the take-up shaft 32 is wound up below the dancer roller 38 and then comes into contact with the dancer roller 38 to resist the urging force of the spring member 40. The displacement body 37 is displaced clockwise. When the displacement body 37 is displaced to the position indicated by the reference symbol P1 in FIG. 1, the arm 39 is detected by the sensor 35, and when the detection result is input to the control means 36, the rotation of the motor M2 is locked and stopped. By doing so, the sheet sticking apparatus 10 enters a standby state.

  Then, when the adherend W is transported leftward in FIG. 1 by the transport means 19, it is detected by a sensor (not shown) and stops at a predetermined position below the suction head 29. Next, while the rotation of the motor M2 is locked, the driving roller 23 is rotated by the motor M1 so that the original fabric R is unwound and the first adhesive sheet S1 is peeled from the peeling sheet RL at the tip of the peel plate 13. And sucked and held by the suction head 29. Next, the suction head 29 is lowered by the linear motor 30 to release the suction of the suction head 29 and return it to the initial position, thereby pressing and sticking the first adhesive sheet S1 to the upper surface of the adherend W. To do.

  The second adhesive sheet S2 that has passed under the print head 26 by feeding the first adhesive sheet S1 is detected by the sensor Se after printing by the print head 26, and at the sheet detection timing. The rotation of the motor M1 is locked, and the feeding of the raw material R is stopped (intermittent feed process). At this time, due to the release sheet RL fed between the pinch roller 24 and the take-up shaft 32, the displacement body 37 is displaced downward in FIG. 1 with the center of the take-up shaft 32 as the center of rotation. The position indicated by P2 indicated by the dotted line is reached. When the take-up shaft 32 is rotated by the motor M2 at the sheet detection timing, the release sheet RL fed between the pinch roller 24 and the take-up shaft 32 is taken up (intermittent take-up process), and the displacement body 37 is moved. 1 is displaced upward in FIG. 1, the arm 39 is detected by the sensor 35, the rotation of the motor M2 is locked at the displacement body detection timing, and the winding of the original fabric R is stopped. Thereby, the sticking operation of one adhesive sheet S is completed, and the displacement body 37 reciprocates once between P1 and P2 for every sticking interval of the adhesive sheet S by repeating the above-described control. .

  Here, the control means 36 calculates the displacement time until the displacement body 37 returns from P2 to P1 at every application interval of the adhesive sheet S, that is, the time between the predetermined timing from the sheet detection timing to the displacement body detection timing. measure. Next, based on the measured displacement time (hereinafter referred to as “immediate displacement time”), the control means 36 determines the rotational speed and rotational torque of the motor M2 in the next intermittent winding.

  Specifically, first, the previous displacement time is compared with a preset reference time. The reference time is a displacement time when the release sheet RL between the pinch roller 24 and the take-up shaft 32 has an appropriate tension, and is input to the control means 36 in advance by the operator. As a result of the comparison, when the previous displacement time is longer than the reference time, control is performed so that the rotational speed and / or rotational torque of the motor M2 in the next intermittent winding is relatively larger than the intermittent winding in the pasting of the immediately preceding adhesive sheet S. On the other hand, when the previous displacement time is shorter than the reference time, the rotational speed and / or rotational torque of the motor M2 is controlled to be relatively smaller than the intermittent winding in the pasting of the immediately preceding adhesive sheet S. For example, the amount of change in the rotation speed or the rotation torque may be increased or decreased in proportion to the difference between the compared previous displacement time and the reference time. When the rotational speed and / or rotational torque of the motor M2 in the next intermittent winding is determined, the rotational speed and / or rotational torque of the winding shaft 32 by the motor M2 is controlled accordingly, and the release sheet RL is wound. .

  Therefore, according to such an embodiment, the displacement time of the displacement body 37 is measured to control the rotational speed, the rotational torque, and the like of the winding shaft 32. Therefore, the number of parts constituting the entire apparatus is reduced, and the apparatus is downsized. Can be achieved. In addition, even when the wound release sheet RL is not circular but has a cam shape or the like and the winding diameter becomes non-uniform, it is easy to change the winding speed and rotational torque of the release sheet RL. It can be detected, and the winding force of the release sheet RL around the take-up shaft 32 can be kept good at all times to prevent winding failure of the release sheet RL.

As described above, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this.
In other words, the present invention has been illustrated and described mainly with respect to specific embodiments, but without departing from the scope of the technical idea and object of the present invention, the shape, position, or With respect to the arrangement and the like, those skilled in the art can make various changes as necessary.
Therefore, the description limited to the shape disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded one part or all part is included in this invention.

  The detection means can be changed in various designs. For example, the detection means may be a sensor that can detect all positions of the movable range of the dancer roller 38 and the arm 39.

Moreover, as long as the said arm 39 and the spring member 40 show | play the effect | action mentioned above, you may perform a design change to another support member or urging | biasing means.
Further, in the measuring means, the time from the start of operation of the motor M2 to the stop is measured, or a plurality of sensors similar to the sensor 35 are provided, and the time for the displacement body 37 to pass between the plurality of sensors is determined for a predetermined timing. The rotational speed and rotational torque of the motor M2 in the next intermittent winding may be determined by the control means 36.

17 Winding device 32 Winding shaft 34 Tension applying means 35 Sensor (detecting means)
36 Control means 37 Displacement body RL Release sheet (band-shaped body)
M2 motor (drive means)

Claims (4)

For a strip that is intermittently fed by repeating feeding and stopping at a predetermined interval, the belt is stopped during the feeding operation of the strip, and the strip is wound for a predetermined length while the strip is stopped. A take-up shaft that can be intermittently taken up, a drive unit that applies a rotational force to the take-up shaft, tension applied to the belt-like body in the previous stage of the take-up shaft, and intermittent feeding and intermittent of the belt-like body A tension applying means having a displacement body displaced by winding; a control means including a function of controlling the rotational speed and / or torque of the driving means; and a function of measuring a displacement time of the displacement body,
The control means determines the rotational speed and / or rotational torque of the next drive means based on the displacement time during which the displacement body is displaced at a predetermined timing by the winding of the belt-like body by the previous winding shaft. A winding device for a belt-like body.   2. The belt-like body winding device according to claim 1, further comprising detection means capable of detecting the position of the displacement body.   The control means compares the displacement time of the previous displacement body as a previous displacement time with a reference time, and if the previous displacement time is longer than the reference time, increases the rotational speed and / or rotational torque of the next drive means, 3. The belt-like body winding device according to claim 1, wherein when the displacement time is shorter than the reference time, control is performed to reduce the rotational speed and / or rotational torque of the next drive unit. 4. A step of intermittently feeding the belt-like body by repeating the feeding operation and stopping at a predetermined interval;
While being driven by the driving means with respect to the intermittently fed belt-like body, the belt-like body is stopped during the feeding operation of the belt-like body, while the belt-like body is wound around the winding shaft by a predetermined length while the belt-like body is stopped. A step of intermittent winding by taking,
Applying tension to the belt in the previous stage of the winding shaft, and applying tension using a displacement body displaced by intermittent feeding and intermittent winding of the belt,
A step of measuring a displacement time during which the displacement body is displaced between predetermined timings by winding the belt-like body by the previous winding shaft;
A step of determining the next rotational speed and / or rotational torque of the driving means based on the measured displacement time;
And a step of driving the driving means at the determined rotational speed and / or rotational torque and winding the belt-shaped body with a winding shaft.

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