JP2012131120A - Sheet-wrapping apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet-wrapping apparatus that can uniformly stick a sheet on a surface of a base to be wrapped.SOLUTION: A belt-like member 7 is suspended on a plurality of rollers 6a-6c and the sheet 3 that is disposed on an object 2 to be wrapped is pressed by the rollers 6a-6c via the belt-like member 7. A portion of a widespread range L of the sheet 3, contacting with the belt-like member 7 suspended on the rollers 6a-6c is pressed. The sheet 3 is uniformly wrapped on the base 2.

Description

  The present invention relates to a sheet wrapping apparatus for attaching and wrapping a sheet to the surface of a base material used for building materials and the like.

  Since the base material used for building materials is unprecedented that the raw material itself is exposed, it is often used by attaching and wrapping a decorative sheet. Patent Document 1 discloses an invention in which a sheet is attached to the surface of a substrate. Patent Document 1 discloses a configuration in which a sheet with an adhesive applied to an adhesive surface is pressed against a base material with a roller, and the sheet is attached to the base material and wrapped.

JP 2008-142976 A

  By the way, in the apparatus disclosed in Patent Document 1, a sheet is pressed against a base material by a single roller called a sticking roller, and the sheet is attached to the base material. That is, the sheet is pressed against the base material at only one position by the sticking roller, and the pressing force is lost when the base material and the sheet pass the sticking roller. As a result, since the pressure is released before the adhesive on the sheet sticking surface hardens, the sticking between the base material and the sheet becomes unstable, which deteriorates the appearance of the wrapping by the sheet.

  Therefore, even if the sheet 42 is pressed against the base material 43 by a plurality of rollers 41a to 41c as in the sheet wrapping apparatus 40 shown in FIG. 2, each of the rollers 41a to 41c is only a part of the sheet 42 (ranges R1 to R3). ). That is, since the sheet 42 and the base material 43 are pressed only when passing through the places where the rollers 41 a to 41 c are installed and are not pressed when they are in other places, the sheet 42 and the base material 43 are unevenly adhered. Is likely to occur.

  Therefore, an object of the present invention is to provide a sheet wrapping apparatus that can wrap and wrap a sheet on the surface of a substrate without unevenness.

  The invention of claim 1 for solving the above-mentioned problem is a sheet wrapping apparatus that presses a sheet against a wrapping object with a plurality of rollers, adheres the sheet to the wrapping object, and wraps the belt. The sheet wrapping apparatus is characterized in that the member is suspended and the roller presses the sheet against the object to be wrapped through the belt-shaped member.

  In the first aspect of the invention, the belt-like member is suspended on the plurality of rollers, and the roller presses the sheet against the wrapping object via the belt-like member, so that the sheet is pressed against the wrapping object by the belt-like member on the surface. Is done. As a result, the sheet is evenly attached to the wrapping object and wrapped.

  In the present invention, since a belt-like member is suspended from a plurality of rollers, a pressing force of the roller is applied to the sheet through the belt-like member, and the sheet is pressed against the wrapping object on the surface to be stuck and wrapped. be able to. That is, the sheet can be adhered to the wrapping object without unevenness.

It is a front view of the sheet | seat wrapping apparatus of this invention, and has shown the state which has wrapped the sheet | seat on the base material. It is a front view of the conventional sheet | seat wrapping apparatus, and has shown the state which is wrapping the sheet | seat on the base material.

  Hereinafter, description will be given with reference to the drawings.

  As shown in FIG. 1, the sheet wrapping apparatus 1 includes a tension pulley 5, pressure rollers 6 a to 6 c, a belt 7 (belt-like member), a plurality of base material transport rollers 4, sheet transport rollers 8 a and 8 b, and an adhesive supply device 9. Etc. The base material transport roller 4 transports the base material 3 (the object to be wrapped) from the right to the left in FIG. 1, and the sheet transport rollers 8a and 8b receive the sheet 2 supplied from a sheet supply device (not shown). It is conveyed to the left in FIG.

  Each pressing roller 6a-6c is horizontally arrange | positioned at equal intervals, and can raise / lower with the raising / lowering mechanism which is not shown in figure. Each of the pressing rollers 6a to 6c can be raised to a position indicated by a two-dot chain line in FIG. The pressing roller 6a is a driving roller that is rotationally driven by a driving motor (not shown), and the pressing rollers 6b and 6c are driven rollers.

  The tension pulley 5 is disposed above the pressing rollers 6a to 6c. The rotation shaft of the tension pulley 5 is parallel to the rotation shafts of the pressing rollers 6a to 6c. The tension pulley 5 can also be moved up and down by another lifting mechanism (not shown). That is, in FIG. 1, the tension pulley 5 can move up and down separately from the pressing rollers 6a to 6c.

  A belt 7 is suspended between the pressure rollers 6 a to 6 c and the tension pulley 5. The tension of the belt 7 is appropriately adjusted by the vertical movement of the tension pulley 5. When the pressing roller 6a (driving roller) is rotationally driven, power is transmitted by the belt 7, and the pressing rollers 6b and 6c and the tension pulley 5 are driven to rotate.

  Each base material conveyance roller 4 has a configuration in which a driving roller and a driven roller are connected by a belt (not shown) so that power can be transmitted. Further, the sheet conveying rollers 8a and 8b provide a guide function for smoothly conveying the sheet 2 from a sheet supply device (not shown).

  The adhesive supply device 9 is arranged on the downstream side in the conveyance direction of the sheet 2 with respect to the sheet conveyance rollers 8a and 8b. Then, the adhesive supply device 9 sprays and supplies the adhesive 10 (for example, hot melt adhesive) to the sheet 2 that has passed through the sheet conveying rollers 8 a and 8 b, thereby forming the bonding surface 2 a of the sheet 2.

  Next, the operation of the sheet wrapping apparatus 1 will be described.

  Initially, the pressing rollers 6a to 6c are raised by a lifting mechanism (not shown).

  Next, the leading edge of the sheet 2 is disposed under the pressing roller 6a through a sheet feeding roller 8a, 8b from a sheet supply device (not shown). The adhesive 10 is jetted and supplied to the sticking surface 2 a of the sheet 2 by the adhesive supply device 9.

  Similarly, the base material 3 (the object to be wrapped) is moved from the right to the left in FIG. 1 by the base material transport roller 4, and the tip (left end) of the base material 3 is disposed below the pressing roller 6a. And the front-end | tip of the sheet | seat 2 and the front-end | tip of the base material 3 are aligned. Thereafter, the pressing rollers 6 a to 6 c are lowered by a lifting mechanism (not shown), and the sheet 2 is pressed by the pressing rollers 6 a to 6 c via the belt 7.

  Next, the pressing roller 6a is driven. The pressing roller 6 a moves the sheet 2 and the base material 3 to the left while pressing and winding the sheet 2 and the base material 3 via the belt 7. At that time, the conveying roller 4 rotates in synchronization with the pressing roller 6a. Therefore, the base material 2 and the sheet 3 are smoothly conveyed leftward while being adhered.

  The leading ends of the sheet 2 and the base material 3 pass through the pressing roller 6b and eventually reach the position of the pressing roller 6c. That is, the sheet 2 and the base material 3 move by a distance L. While the sheet 2 and the substrate 3 move the distance L, the sheet 2 is continuously pressed to the substrate 3 side by the belt 7. That is, the sheet 2 is pressure-bonded (pressed) to the substrate 3 with a surface formed by the length corresponding to the distance L and the width of the sheet 2 (the length in the direction orthogonal to the paper surface of FIG. 1). The In other words, the sheet 2 continues to be pressed against the base material 3 while moving the distance L.

  As a result, the sheet 2 is satisfactorily adhered to the base material 3, and the base material 3 is uniformly wrapped with the sheet 2. The base material 3 is continuously wrapped with the sheet 2, and the wrapped base material 3 is discharged to the left.

  Here, at the start of the sheet wrapping apparatus 1, the leading end of the sheet 2 and the leading end of the base material 3 are not aligned under the pressing roller 6 a, and both are pulled to the left of the sheet wrapping apparatus 1, You may make it wrap the sheet | seat 2 from the site | part in the middle. Thereby, the effort which aligns the front-end | tip of the sheet | seat 2 and the front-end | tip of the base material 3 nervously can be saved.

  The shape of the cross section of the belt-like member can be arbitrarily set according to the shape of the sheet 2 or the base material 3. For example, when a groove extending in the feeding direction (conveying direction) is formed on the surface of the base material, it is preferable to select a belt-like member having a protrusion that engages with the groove. As a result, the sheet 2 is satisfactorily adhered to the groove of the base material.

  When it takes time until the sheet 3 is adhered to the base material 2 (the adhesive 10 is solidified), the base material transport roller 4 and the pressure are pressed until the time for the sheet 3 to be completely adhered has elapsed. The roller 6a may be stopped, and the substrate 2 and the sheet 3 may be moved by the distance L after the time for complete sticking has elapsed. That is, the sheet 3 is sent to the substrate 2 in order of the length corresponding to the distance L and pressed, and the substrate 2 and the sheet 3 are stopped and bonded (wrapped) until the adhesion time elapses.

  Each pressing roller 6 is accommodated in an air chamber filled with cooling air having a pressure higher than that of the outside air, and a hole for exposing the lower portion of each pressing roller 6 is provided in the lower portion of the air chamber so that each pressing roller 6 presses the sheet. At the same time, it is possible to discharge the low-temperature air from the hole and cool the attachment portion of the sheet and the base material. That is, when such a configuration is adopted, when the sheet and the substrate are bonded with a hot melt adhesive mainly composed of a thermoplastic resin, the hot melt adhesive can be solidified at an early stage.

DESCRIPTION OF SYMBOLS 1 Sheet wrapping apparatus 2 Sheet 2a Adhesion surface 3 Base material (wrapping target object)
4 Substrate conveying roller 5 Tension pulleys 6a to 6c Pressing roller 7 Belt (belt-shaped member)
8a, 8b Sheet conveying roller 9 Adhesive supply device 10 Adhesive

Claims (1)

  In a sheet wrapping apparatus in which a sheet is pressed against a wrapping object with a plurality of rollers, and the sheet is attached to the wrapping object to wrap, a belt-like member is suspended on the plurality of rollers, and the roller passes through the belt-like member. A sheet wrapping apparatus that presses a sheet against a wrapping object.

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