JP6151880B2 - Sheet sticking device and sticking method - Google Patents

Description

  The present invention relates to a sheet sticking apparatus and a sticking method, and more particularly to a sheet sticking apparatus and a sticking method capable of sticking an adhesive sheet by pressing it onto an adherend.

  Conventionally, a sheet sticking apparatus for sticking an adhesive sheet such as a label to an adherend has been widely used, and such a sheet sticking apparatus is disclosed in Patent Document 1, for example. The sheet sticking device of Patent Document 1 includes a feeding unit that feeds the adhesive sheet, a holding unit that holds the fed adhesive sheet, and a pressing unit that blows and presses the adhesive sheet held by the holding unit. Has been.

JP 2008-74413 A

However, in Patent Document 1, since the adhesive sheet is held flat in the holding means, the adhesive sheet that is being blown away tends to be undulated. For this reason, there is an inconvenience that air bubbles are easily mixed between the adhered adhesive sheet and the adherend, and wrinkles are easily generated on the adhesive sheet.
In addition, when the adhesive sheet is attached to the adherend that is being transported while the adhesive sheet is held by the holding means, the adhesive sheet has a force in the transport direction of the adherend immediately after touching the adherend. In addition, the inconvenience of being stuck in a contracted state in the conveying direction of the adherend is caused.

[Object of invention]
It is an object of the present invention to prevent a sticking failure from occurring when the adhesive sheet is blown off and applied, or when the adhesive sheet is attached to the adherend being transported while being held by the holding means. It is in providing the sheet sticking apparatus and sticking method which can be performed.

In order to achieve the above object, the present invention provides a feeding means for feeding out an adhesive sheet having an adhesive layer on one surface of a base sheet, and a holding means having a holding surface for holding the adhesive sheet from the base sheet side. A pressing means for pressing and sticking the adhesive sheet to the adherend surface of the adherend,
The holding means is capable of holding the adhesive sheet as a folding state in which the holding surface is partially displaced so that an in-plane center portion of the adhesive sheet is closer to the adherend surface than the outer edge portion. Forming means,
The bending state forming means includes a moving body capable of forming a partial region of the holding surface, and a driving device that moves the moving body, and the moving sheet moves so that the adhesive sheet is bent. It has taken to, that the structure.

  In this invention, it is preferable that the said pressing means is equipped with the ejection means which can eject gas from the said holding surface.

Furthermore, the sheet sticking method of the present invention includes a step of feeding out an adhesive sheet having an adhesive layer on one surface of the base sheet,
Holding the adhesive sheet with a holding means having a holding surface for holding the adhesive sheet from the base sheet side ;
The movable body capable of forming a partial region of the holding surface is moved through a driving device to partially displace the holding surface, so that the center portion in the surface of the adhesive sheet is more attached than the outer edge portion. A process of making a bending state close to the adherend surface of the body,
And a step of pressing and adhering the adhesive sheet to an adherend.

  In the present specification and claims, the term “anti-bending state” means a state in which the adhesive sheet is deformed by being bent or bent so as to have strength against bending (bending strength). To do. In addition, the direction where the bottom of the trough part of the adhesive sheet formed by bending or bending is defined as a trough direction.

  According to the present invention, since the adhesive sheet is held in the bending state described above, the adhesive sheet has an increased bending strength. For example, when the adhesive sheet is blown and pressed, the adhesive sheet being blown away However, it becomes easy to maintain the bending state, it is possible to prevent the adhesive sheet from being deformed so as to wave and blow off, and it is possible to suppress the occurrence of wrinkles on the adhered adhesive sheet. In addition, since the in-plane center portion of the adhesive sheet is in a bending state closer to the adherend surface than the outer edge portion, the adhesion can be applied while expanding the pasting surface from the in-plane center portion to the outer edge portion. Since it is affixed to the body, it can be affixed while gradually expelling the air between the adhesive sheet and the adherend, and air bubbles can be prevented from being mixed between them. Moreover, even when a force is applied to the adherend in the transport direction when the adhesive sheet is attached to the adherend being transported while the adhesive sheet is held by the holding means, the adhesive sheet is Since it is in a bending state, it is possible to avoid sticking the adhesive sheet in a contracted state in the moving direction of the adherend.

  Furthermore, when the holding surface can be partially displaced to form a bending state of the adhesive sheet, since the holding means can receive the adhesive sheet fed from the feeding means without a step, the adhesive sheet is caught by the step, Inconveniences such as bending or falling off can be eliminated. Moreover, it becomes possible to give variations to the shape of the bending state, and better prevent sticking failure by changing the valley direction and the shape of the bending state according to the shape, material, rigidity, etc. of the adhesive sheet. Is possible. Further, by arranging the direction in which the holding surface is partially displaced, the valley direction can be set freely.

The schematic front view of the sheet sticking apparatus which concerns on embodiment. The partial front view of the sheet sticking apparatus which concerns on a modification. (A) And (B) is a partial front view of the sheet sticking apparatus which concerns on another modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In this embodiment, unless otherwise specified, terms indicating directions (eg, up, down, left, right) are based on FIG.

  In FIG. 1, the sheet sticking apparatus 10 is arranged in parallel with a conveying means CV composed of a belt conveyor or the like that conveys the adherend W in the direction orthogonal to the paper surface. The sheet sticking device 10 is provided with a feeding means 11 that feeds the adhesive sheet S to be stuck on the adherend W, a holding means 12 that can hold the adhesive sheet S that is fed from the feeding means 11, and a holding means 12 that holds the sheet. And pressing means 13 that presses and adheres the adhesive sheet S to the adherend W. The adhesive sheet S includes a base sheet BS and an adhesive layer AD provided on one surface of the base sheet BS, and is temporarily attached to the release sheet RL via the adhesive layer AD.

  The feeding means 11 includes a support shaft 21 that supports a roll-shaped original fabric R in which an adhesive sheet S is temporarily attached to a strip-shaped release sheet RL at a predetermined interval, and an original fabric R that is fed from the support shaft 21. The release plate 22 that folds the release sheet RL and peels the adhesive sheet S from the release sheet RL, the drive roller 24 and the pinch roller 25 that sandwich the release sheet RL after passing through the release plate 22, and after passing through these A take-up shaft 26 that winds the release sheet RL with a predetermined torque by a driving device (not shown) is provided. The drive roller 24 is rotatably provided via a rotation motor M as a drive device.

  The holding means 12 includes a head portion 29 that includes a bottom wall 29A, a side wall 29B, and an upper wall 29C and forms a chamber 30 therein, a plurality of suction ports 31 that are formed in the bottom wall 29A and communicate with the chamber 30, and a press A rotation motor 32 as a drive device that supports the head portion 29 via the means 13 is provided. The bottom surface of the bottom wall 29A is a holding surface 29D, and the adhesive sheet S is held in a state where the base sheet BS is in surface contact with the holding surface 29D. The holding surface 29 </ b> D is provided in a shape in which the central portion in the left-right direction bulges downward from both ends in the state indicated by the solid line in FIG. 1. Accordingly, when the adhesive sheet S held on the holding surface 29D is opposed to the adherend surface W1 of the adherend W, the in-plane center portion is bent more closely to the adherend surface W1 than its left and right outer edge portions. The bottom S1 of the valley portion of the adhesive sheet S in this bending state extends in the direction perpendicular to the plane of FIG.

  The chamber 30 is connected to a decompression means such as a decompression pump or a vacuum ejector (not shown) via a decompression pipe 33, and communicates with the decompression means to suck air from the suction port 31 and to contact the holding surface 29D. Is provided so as to be held from the base sheet BS side.

  The pressing means 13 includes an air cylinder 35 as a driving device connected to the upper surface of the upper wall 29C and capable of moving the head portion 29 up and down, and an ejection means 37 having a pressurizing pipe 36 connected to the chamber 30. Yes. The ejecting means 37 further includes pressurizing means (not shown) such as a pressurizing pump and a pressurizing tank that communicate with the chamber 30 via the pressurizing pipe 36, allows gas to be ejected from the suction port 31, and is held by the holding surface 29D. The adhesive sheet S is blown off and the adhesive sheet S is pressed against the adherend W to be pasted. Note that the air cylinder 35 may be configured to be capable of intermediate stopping that can stop the head portion 29 at a predetermined position.

  Next, a method for applying the adhesive sheet S according to the embodiment will be described.

  When the adherend W is transported by the transport means CV and detected by a sensor (not shown) at a predetermined position, the original fabric R is fed out by the synchronous operation of the rotation motor M and the rotation motor 32, and the original fabric R The head portion 29 that has been waiting at the position indicated by the two-dot chain line in FIG. 1 is rotated to the position indicated by the solid line at the same speed as the feeding speed. Thus, the adhesive sheet S is held on the holding surface 29D from the base sheet BS side by the suction port 31 communicated with the pressure reducing means via the pressure reducing pipe 33 while being peeled from the peeling sheet RL by the peeling plate 22. At this time, the adhesive sheet S held by the head portion 29 is maintained in a bending state in which the in-plane center portion is closer to the adherend surface W1 of the adherend W than the left and right outer edge portions.

  From this state, the operation of the air cylinder 35 causes the head portion 29 so that the interval between the adherend W and the holding surface 29D becomes a predetermined interval (for example, the shortest distance from the adherend surface W1 to the holding surface 29D is 10 mm). Is lowered. Thereafter, the communication with the decompression means is interrupted, and at the same time, the suction port 31 is communicated with the pressurization means via the pressurizing pipe 36, and gas is ejected from the suction port 31. By this ejection, the adhesive sheet S is blown away while maintaining the bending state, and the adhesive sheet S is pressed against the adherend W and stuck.

  Therefore, according to such an embodiment, since the adhesive sheet S is held in a bent state that is curved so as to bulge downward, the posture of the adhesive sheet S blown off by the ejection means 37 is also in the same bent state. Can be formed. Thus, the adhesive sheet S can be prevented from being blown in a direction in which the adhesive sheet S intersects the paper surface in FIG. 1 (the direction in which the amplitude of the wave advances intersects the paper surface in FIG. 1). It is possible to apply air while gradually expelling air from the inner central portion to the outer edge portion, and it is possible to prevent wrinkles and air bubbles from being mixed in the attached adhesive sheet S. In addition, since the adhesive sheet S is easily deformed so as to wave in the long side direction, the valley direction is preferably formed in the long side direction of the adhesive sheet S.

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.

For example, the pressing means 13 may be configured by only the air cylinder 35, and the adhesive sheet S may be pressed and stuck to the adherend W by the lowering operation of the head portion 29 by the air cylinder 35. In this case, even if the adhesive sheet S is affixed to the adherend W being conveyed by the conveying means, the bending strength of the adhesive sheet S that is in the bending state increases with respect to the conveying direction (the direction orthogonal to the plane of FIG. 1). Therefore, it is possible to prevent the adhesive sheet S from shrinking and causing wrinkles. In this case, after a partial area in the center in the left-right direction of the adhesive sheet S is pressed against the adherend surface W1, gas is ejected from the suction port 31, and areas on both sides in the left-right direction of the adhesive sheet S are pressed against the adherend surface W1. You may make it stick.
Further, as shown in FIG. 2, when the conveying direction of the conveying unit CV is the left direction, the head portion 29 is oriented so that the adhesive sheet S in the bending state increases in the bending strength with respect to the conveying direction. The valley direction can be changed to the left and right direction. Specifically, with respect to the adherend surface W1 to which the held adhesive sheet S is opposed, the central portion in the direction orthogonal to the paper surface of FIG. 2 is formed in a bending state closer to the outer edge portions on both sides in the same direction. With respect to the embodiment, the head portion 29 is changed to a direction rotated 90 ° in plan view. The orientation of the head portion 29 may be fixed, or as shown by a two-dot chain line in FIG. 2, the sticking direction changing means, which is a driving device such as a rotation motor 40, is connected between the head portion 29 and the pressing means 13. The head unit 29 may be rotated in accordance with the conveyance direction of the adherend W. When such a sticking direction changing means is provided, the transport direction of the adherend W can be set to, for example, 30 ° or 45 ° with respect to the feeding direction of the adhesive sheet of the sheet sticking device 10, It can prevent that the relative positional relationship which arrange | positions the sheet sticking apparatus 10 with respect to the conveyance direction of a means is restrict | limited.

Further, the head unit 29 can be variously changed in design, and can be replaced with the configuration shown in FIG. The head portion 29 in FIG. 3A includes a bending state forming means 41 that can form the bending state of the adhesive sheet S by partially displacing the holding surface 29D. The bending state forming means 41 is supported by a linear motion motor 42 as a driving device provided in the chamber 30 and an output shaft of the linear motion motor 42, and a partial region at the center in the left-right direction of the holding surface 29D. And a movable body 43 that can be formed by the lower surface. The moving body 43 is provided with a suction port 43A, and this suction port 43A communicates with the chamber 30 and can perform intake and exhaust similarly to the suction port 31 formed in the bottom wall 29A. When affixing the adhesive sheet S, as shown in FIG. 3A, after the adhesive sheet S is held by the holding surface 29D, it is moved by the operation of the linear motor 42 as shown in FIG. 3B. The body 43 is lowered. As a result, the held adhesive sheet S is formed in a folded state in which the in-plane center portion is closer to the adherend surface W1 than the left and right outer edge portions, and the adhesive sheet S being blown away also maintains the folded state. Thus, it is affixed to the adherend W. Here, by adjusting the operation amount of the linear motion motor 42, the protrusion amount of the central portion of the adhesive sheet S in the folding state can be changed, and the resistance that can be satisfactorily applied according to the material of the adhesive sheet S and the like. A folded state can be formed easily and quickly. Also in this case, it is not hindered to provide the attaching direction changing means.
The extending direction of the moving body 43 in FIG. 3 is the direction orthogonal to the paper surface of FIG. 3, but instead, the extending direction of the moving body 43 in a direction intersecting with the oblique direction of the paper surface of FIG. May be changed. Furthermore, after the moving body 43 presses a partial area in the center in the left-right direction of the adhesive sheet S against the adherend surface W1, the linear motor 42 and the air cylinder 35 are driven to move the left and right sides of the adhesive sheet S at the bottom wall 29A. You may make it affix the area | region of the both directions direction on the to-be-adhered surface W1, and stick.

Furthermore, as long as the feeding means 11 can be fed as described above, various design changes can be made.
The holding means 12 is not limited as long as the adhesive sheet S can be held, and other configurations such as electrostatic holding that can hold the adhesive sheet S by static electricity may be employed.
Furthermore, in the said embodiment, although the trough direction was made into the paper surface orthogonal direction or paper surface parallel direction of each figure, a trough direction is good also as a direction which crosses the paper surface diagonal direction of each figure.

  The drive device in the embodiment includes an electric device such as a rotation motor, a linear motion motor, a linear motor, a single-axis robot, and an articulated robot, an actuator such as an air cylinder, a hydraulic cylinder, a rodless cylinder, and a rotary cylinder. In addition to these, a combination of them directly or indirectly may be employed (some of them overlap with those exemplified in the embodiment).

DESCRIPTION OF SYMBOLS 10 Sheet sticking apparatus 11 Feeding means 12 Holding means 13 Pressing means 29D Holding surface 31 Suction port 37 Ejecting means 41 Folding state forming means AD Adhesive layer BS Substrate sheet S Adhesive sheet W Substrate W1 Adhering surface

Claims (3)

A feeding means for feeding out an adhesive sheet having an adhesive layer on one side of the base sheet, a holding means having a holding face for holding the adhesive sheet from the base sheet side, and attaching the adhesive sheet to an adherend Pressing means for pressing and sticking to the surface,
The holding means is capable of holding the adhesive sheet as a folding state in which the holding surface is partially displaced so that an in-plane center portion of the adhesive sheet is closer to the adherend surface than the outer edge portion. Forming means,
The bending state forming means includes a moving body capable of forming a partial region of the holding surface, and a driving device that moves the moving body, and the moving sheet moves so that the adhesive sheet is bent. sheet sticking apparatus characterized by a.   The sheet pressing apparatus according to claim 1, wherein the pressing unit includes an ejection unit capable of ejecting a gas from the holding surface. Extending the adhesive sheet having an adhesive layer on one surface of the base sheet;
Holding the adhesive sheet with a holding means having a holding surface for holding the adhesive sheet from the base sheet side ;
The movable body capable of forming a partial region of the holding surface is moved through a driving device to partially displace the holding surface, so that the center portion in the surface of the adhesive sheet is more attached than the outer edge portion. A process of making a bending state close to the adherend surface of the body,
And a step of affixing the adhesive sheet by pressing it onto an adherend.

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