JP4861917B2 - Sheet sticking device and sheet sticking method - Google Patents

Description

  The present invention relates to a sheet affixing device and a sheet affixing method. More specifically, the present invention eliminates a shortage of motor torque when applying a repetitive output to an original fabric in which an adhesive sheet is temporarily attached to a strip-shaped release sheet. The present invention relates to a sheet sticking apparatus and a sheet sticking method that maintain a peeling timing with high accuracy and eliminate variations in adhesive sheet sticking accuracy.

  2. Description of the Related Art Conventionally, a sheet sticking device (label sticking device) that automatically sticks an adhesive sheet (label) to an adherend that is transported along a transport path is known (see, for example, Patent Document 1). The label affixing device described in the document includes a support unit that supports the original fabric with the label temporarily attached to a strip-shaped release sheet, a drive roller that applies intermittent feed force to the original fabric, A peel plate is disposed between the support means and the driving roller, and peels off the release sheet to peel the label from the release sheet. Here, the drive roller employs a configuration in which the label is peeled from the release sheet and then rotated to the opposite side of the label feeding direction.

JP 2007-62776 A

In the label sticking device described in Patent Document 1, the curved peel plate can be restored to the initial shape or the initial position by rotating the driving roller to the opposite side of the label feeding direction, and the motor that drives the driving roller is stopped. It is the structure which suppresses the torque at the time.
However, the configuration of Patent Document 1 does not employ a configuration that positively loosens the original fabric or release sheet that is wound around the label sticking device, and therefore the drive roller when the motor is driven. In the initial stage of rotation, that is, in the rising section until the motor reaches the rated torque, the torque shortage occurs due to the influence of the static friction of the raw material, the label feeding timing varies, and the label sticking accuracy decreases. There is an inconvenience.

[Object of invention]
The present invention has been devised by paying attention to such inconveniences, and its purpose is to improve the sheet sticking accuracy by making it less susceptible to the static friction of the original fabric in the initial stage of label feeding. It is providing the sheet sticking apparatus and sheet sticking method which can be performed.

In order to achieve the above object, the present invention provides a supporting means for supporting an original fabric in which an adhesive sheet is temporarily attached to a strip-shaped release sheet at a predetermined interval, and an extension for intermittently applying a feed force to the original fabric. In a sheet sticking apparatus comprising: a means; a peeling means for folding the release sheet of the original fabric to peel the adhesive sheet; and a tension applying means for applying tension to the original fabric folded by the peeling means.
After peeling off the adhesive sheet, before peeling the next adhesive sheet from the release sheet, there is provided a slack forming means for forming a slack in the original fabric and / or the release sheet between the tension applying means and the feeding means, The structure is adopted.

  In the present invention, the feeding means includes a driving roller, and the slack forming means can be configured by rotating the driving roller to the opposite side of the original fabric feeding direction.

  Further, the slack forming means may be constituted by a displacement means for displacing the original fabric between the tension applying means and the feeding means and / or the feeding path of the release sheet.

Further, the present invention provides a stripping means disposed intermittently on the upstream side of the feeding means, while intermittently feeding the original fabric in which the adhesive sheet is temporarily attached to the strip-shaped peeling sheet at a predetermined interval via the feeding means. In the sheet sticking method of sticking to a predetermined adherend while peeling the adhesive sheet through
After peeling off the adhesive sheet, the base material upstream of the feeding means and / or the release sheet is slackened, and when the next adhesive sheet is peeled from the release sheet, the slack is absorbed while the The method of unwinding the original fabric is used.

  The slack formation in the method can be performed by rotating the driving roller constituting the feeding means to the side opposite to the original fabric feeding direction.

  Moreover, the formation of the slack can be performed by displacing the feed path of the original fabric and / or the release sheet located on the upstream side of the feeding means.

According to the present invention, by providing the raw fabric between the tension applying means and the feeding means and / or the loosening formation means of the release sheet, the static friction of the original fabric in the initial stage of peeling the adhesive sheet from the release sheet. It becomes difficult to be affected. That is, since the adhesive sheet can be fed out after the motor or the like constituting the feeding means reaches the rated torque, the initial torque shortage of peeling the adhesive sheet from the release sheet is eliminated, and the feeding timing of the adhesive sheet does not vary. Further, the accuracy of attaching the adhesive sheet to the adherend can be improved.
Also, when the slack forming means is configured by rotating the drive roller to the opposite side of the original roll feeding direction, it is sufficient to use a motor that can rotate forward and reverse, and slack can be formed with a simple configuration. It becomes.
Further, when the slack is formed by the displacing means for displacing the original fabric and / or the feeding path of the release sheet, at least one of the plurality of means constituting the sheet sticking device can be displaced. In this way, slack can be formed, and there is no restriction on the arrangement of the displacement means or the portion to be provided, and the degree of freedom in design can be expanded.

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

[First Embodiment]
The schematic front view of the sheet sticking apparatus which concerns on 1st Embodiment is shown by FIG. In this figure, a sheet sticking device 10 is provided with a support means 11 for supporting an original fabric R on which a label L as an adhesive sheet is temporarily attached to a strip-like release sheet RL at a predetermined interval, and a repeated output to the original fabric R. The feeding means 12 to be applied, the peeling means 13 for turning back the release sheet RL of the original fabric R and peeling the label L, and the adherend W on which the label L peeled from the release sheet RL is transported along the transport path P. A pressing means 14 that presses the sheet L, a winding means 15 that winds up the release sheet RL after the label L is peeled off along with the feeding means 12, and a tension applying means 16 that applies tension to the raw fabric R. Configured. Here, each means in the present embodiment is supported by a plate-like frame F located in a substantially vertical plane to form one unit.

  The support means 11 is constituted by a support shaft 17 rotatably supported on the upper part of the frame F, and is supported by the support shaft 17 so as to be able to supply an original fabric R wound in a roll shape.

  The feeding means 12 includes a motor M disposed on the back side of the frame F, a driving roller 18 rotatably provided via the motor M, and a pinch that sandwiches the release sheet RL between the driving roller 18. A roller 19. As the motor M, a forward / reverse rotation type that performs rotation in the direction of unwinding the original fabric R (left rotation) and rotation in a direction of returning the original fabric R to the opposite side of the unwinding direction (right rotation) is adopted. Thus, a slack is formed in the original fabric R and / or the release sheet RL between the tension applying means 16 and the feeding means 12. Therefore, in the present embodiment, the feeding means 12 also achieves a function as a loosening formation means of the release sheet RL. In addition, the amount of slackness of the original fabric R and / or the release sheet RL can be set arbitrarily.

  The peeling means 13 is constituted by a peel plate 20, and the peel plate 20 is supported by the frame F so that the tip side is located outside the frame F. A sensor (not shown) is arranged on the upper surface side of the peel plate 20 or in the vicinity thereof, and the leading end of the label L in the feeding direction can be detected by the sensor.

  The pressing means 14 is constituted by a press roller 22 supported by the frame F through an arm (not shown). The press roller 22 is located on the front end side of the peel plate 20 and applies a pressing force to the label L peeled from the release sheet RL to press the label L against the adherend W. Note that the pressing means 14 is provided so as to be able to advance and retreat with respect to the adherend W instead of the press roller 22, and is a vacuum grid that temporarily holds the label and presses it against the adherend, or is pressed by an air jet or blade material. Means or the like may be used.

  The winding means 15 includes a winding shaft 23. The winding shaft 23 winds the release sheet RL with a predetermined torque by a motor (not shown).

The tension applying means 16 is composed of a pair of brake rollers 24 and 25 sandwiching the original fabric R. The tension applying means 16 is fixed to the original fabric R and / or the release sheet RL between the brake rollers 24 and 25 and the feeding means 12. Tension is applied so that the label L can be peeled off at the tip position of the peel plate 20.
A guide roller 26 is disposed between the brake rollers 24, 25 and the peel plate 20 for causing the original fabric R to follow the upper surface of the peel plate 20.

  Next, the label sticking method by the sheet sticking apparatus 10 in the first embodiment will be described with reference to FIG.

  As an initial operation, the original fabric R supported by the support shaft 17 is pulled out by a predetermined length, and the original fabric R is wound around the brake rollers 24 and 25, the guide roller 26, and folded at the tip of the peel plate 20. Thereafter, the original fabric R is passed between the drive roller 18 and the pinch roller 19 to fix the lead end of the original fabric R to the winding shaft 23.

  When the power is turned on, the motor M of the feeding means 12 is driven and the feeding of the original fabric R is started via the driving roller 18. When a sensor (not shown) provided in the vicinity of the peel plate 20 detects the leading end of the label L in the feeding direction, the motor M temporarily stops, and immediately after that, reversely rotates by a predetermined angle to bring the leading end position of the label L in the feeding direction to the standby position. keep. Then, as shown by a two-dot chain line in FIG. 2, slack is imparted to the release sheet RL. In the present embodiment described below, as illustrated in FIG. 2, only the release sheet RL is illustrated and described so as to appear loose between the peel plate 20 and the driving roller 18. In order to make it easy to understand that the slack has occurred, it is only described. Actually, the raw fabric R and / or the release sheet RL between the tension applying means 16 and the feeding means 12 is loosened as a whole. .

  Here, when it is detected by a sensor (not shown) that the adherend W transported on the transport path P has reached a predetermined position, the motor M is driven in the feeding direction in response to the timing signal. As a result, the driving roller 18 rotates while absorbing the slack in the direction in which the original fabric R is unwound, and the label L is peeled off at the tip of the peel plate 20 in synchronization with the conveyance speed of the adherend W. The label L is affixed to the adherend W in response to the pressing force.

  Even after the application of one label is completed in this way, the motor M continues to rotate at the same speed, and when the leading end of the next label L is detected by a sensor (not shown), the motor M temporarily stops as described above. Immediately thereafter, the sheet is reversely rotated by a predetermined angle to again form the slackness of the release sheet RL, and the leading end position in the feeding direction of the label L is kept at the standby position. Thereafter, the same operation is repeated.

  Therefore, according to the first embodiment, the label L is kept in the standby state in a state in which the original fabric R between the brake rollers 24 and 25 and the driving roller 18 and / or the release sheet RL is slackened. Since the motor M is driven to rotate the driving roller 18 when a timing signal for peeling the label L is given to the feeding means 12, the stationary state of the original fabric R is stopped at the initial rotation stage of the driving roller 18. Torque shortage due to friction does not occur, the label L can be fed out after the motor M reaches the rated torque, the label L can be peeled off at a stable timing, and the accuracy of application to the adherend W is improved. The effect that it can improve is acquired.

  Next, other embodiments of the present invention will be described. In the following description, the same reference numerals are used for the same or equivalent components as in the first embodiment, and the description is omitted or simplified.

[Second Embodiment]
The principal part enlarged front view of the sheet sticking apparatus 10 which concerns on 2nd Embodiment is shown by FIG. The second embodiment is characterized in that the feeding means 12 is provided so as to be movable in the left-right direction. That is, a displacement means 30 for moving the motor M and the driving roller 18 and the pinch roller 19 connected thereto in the left-right direction with respect to the frame F is provided. The displacing means 30 is constituted by a linear motion motor, the amount of movement of which can be adjusted, and the amount of looseness of the original fabric R and / or the release sheet RL can be set arbitrarily. The displacing means 30 is not particularly limited as long as it can move the entire feeding means 12 to displace the feeding path of the release sheet RL. Here, the displacement means 30 constitutes a slack forming means for the release sheet RL. In the plane of the frame F, slot holes (not shown) for allowing the drive roller 18 and the pinch roller 19 to move in the left-right direction are formed. Other configurations are substantially the same as those in the first embodiment.

  In the second embodiment, the original fabric R and / or the release sheet RL can be loosened by displacing the entire feeding means 12 to a position indicated by a two-dot chain line in FIG. In this configuration, simultaneously with the feeding of the label L, the displacement means 30 is displaced in the right direction in the figure, the label L is attached to the adherend, and immediately after the drive of the motor M is stopped, the displacement means 30 is moved in the left direction. Displacement and the release sheet RL form a slack as indicated by a two-dot chain line, whereby the same actions and effects as in the first embodiment can be obtained.

[Third Embodiment]
FIG. 4 shows an enlarged front view of a main part of the sheet sticking device 10 according to the third embodiment of the present invention. In this third embodiment, instead of fixing and supporting the peel plate 20 to the frame F, a displacement means 40 composed of a linear motion motor is adopted as a slack forming means, and the peel plate 20 is interposed via the displacement means 40. It is characterized by being supported so as to be able to advance and retreat. With such a configuration, immediately after the label L is peeled and pasted and the motor M stops driving, the tip position of the peel plate 20 is retracted via the displacement means 40, and the original fabric R and / or the release sheet RL. A slack can be formed. Other configurations are substantially the same as those of the first embodiment.
In the third embodiment, the peel plate 20 may be returned to the initial protruding position in synchronization with the timing when the motor M is driven to start the label L peeling operation. Similar actions and effects can be obtained.

[Fourth Embodiment]
FIG. 5 shows an enlarged front view of the main part of the sheet sticking device 10 according to the fourth embodiment of the present invention. This fourth embodiment is characterized in that a displacement means 50 composed of a roller is employed as a slack forming means between the peel plate 20 and the driving roller 18. The displacement means 50 is supported by the frame F so that the axial position can be displaced in the vertical direction by a drive means (not shown), and when the feeding operation of the original fabric R by the motor M is stopped, two in FIG. A slack can be formed in the original fabric R and / or the release sheet RL by displacing to the dotted line position. Other configurations are the same as those of the first embodiment.
Therefore, also by such an embodiment, the same operation and effect as the above-described embodiments can be obtained.

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.

  For example, in the above-described embodiment, the case where the tension applying unit 16 is configured by the pair of brake rollers 24 and 25 is illustrated and described. However, the present invention is not limited to this and is illustrated in FIG. In addition, the label L (original fabric R) may be sandwiched between the peel plate 20 and a label press 60 that applies a certain tension to the original fabric R and / or the release sheet RL between the feeding means 12 may be used. In this configuration, the motor M of the feeding means 12 can be rotated forward and backward, or the feeding means 12 can be displaced in the left-right direction, so that the release sheet RL between the feeding means 12 and the peel plate 20 is loosened. And substantially the same operations and effects as those of the above embodiments can be obtained.

  Further, the original fabric R and / or the release sheet RL can be slackened by displacing the position of the brake rollers 24 and 25 or the position of the guide roller 26 through an appropriate displacement means. In short, the present invention makes it possible to displace the feeding path of the original fabric R by displacing the position of each means or member constituting the sheet sticking apparatus 10, thereby making the original fabric R between the tension applying means and the feeding means. And / or the structure which can provide slack to the peeling sheet RL is sufficient.

  Further, the adhesive sheet is not limited to the label L, and may be a protective sheet that is attached to a semiconductor wafer or the like to protect the circuit surface, a mount sheet or a dicing sheet that mounts the semiconductor wafer on the ring frame, or the like.

The schematic front view of the sheet sticking apparatus which shows 1st Embodiment. The principal part enlarged front view of FIG. The principal part enlarged front view of the sheet sticking apparatus which concerns on 2nd Embodiment. The principal part expansion front view of the sheet sticking apparatus which concerns on 3rd Embodiment. The principal part expansion front view of the sheet sticking apparatus which concerns on 4th Embodiment. The principal part enlarged front view of the sheet sticking apparatus which shows a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Sheet sticking apparatus 11 Support means 12 Feeding means 13 Peeling means 15 Winding means 16 Tension applying means 18 Drive roller 20 Peel plate (peeling means)
30 Displacement means (slack forming means)
40 Displacement means (slack forming means)
50 Displacement means (slack forming means)
60 Label presser (tensioning means)
L label (adhesive sheet)
R Original fabric RL Release sheet W Substrate

Claims (6)

A support means for supporting the original fabric in which the adhesive sheet is temporarily attached to the strip-shaped release sheet at a predetermined interval; a feeding means for intermittently applying a feed force to the original fabric; and folding back the original release sheet. In a sheet sticking apparatus comprising: a peeling means for peeling the adhesive sheet; and a tension applying means for applying tension to the raw material folded by the peeling means.
After peeling the adhesive sheet, before peeling the next adhesive sheet from the release sheet, there is provided a slack forming means for forming a slack in the original fabric and / or the release sheet between the tension applying means and the feeding means. The sheet sticking apparatus characterized by the above-mentioned.   The sheet sticking apparatus according to claim 1, wherein the feeding means includes a driving roller, and the slack forming means is configured to rotate the driving roller to the opposite side of the original roll feeding direction.   2. The sheet sticking apparatus according to claim 1, wherein the slack forming means is constituted by a displacement means for displacing the original fabric between the tension applying means and the feeding means and / or the feeding path of the release sheet. . The original fabric with the adhesive sheet temporarily attached to the strip-shaped release sheet with a predetermined interval is intermittently fed out via the feeding means, and the adhesive sheet is peeled off via the peeling means arranged upstream of the feeding means. In the sheet sticking method of sticking to a predetermined adherend while peeling,
After peeling off the adhesive sheet, a slack is formed on the upstream side of the feeding means and / or the release sheet, and when the next adhesive sheet is peeled from the release sheet, the looseness is absorbed. A sheet sticking method comprising feeding out the original fabric.   5. The sheet sticking method according to claim 4, wherein the formation of the slack is performed by rotating a driving roller constituting the feeding means to the side opposite to the original fabric feeding direction.   5. The sheet sticking method according to claim 4, wherein the formation of the slack is performed by displacing an unwinding path of the original fabric and / or release sheet positioned upstream of the unwinding means.

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