JPH08238736A - Laminator - Google Patents

Abstract

PURPOSE: To prevent the wrinkle of a coating sheet by variably setting a distance between small-width drive rollers aligned in parallel according to the width of a base material and eliminating the adherence of adhesive of the end side of the sheet to the rollers in a laminator in which the sheet is press bonded to the material via the adhesive. CONSTITUTION: When a laminator 1 is started, a coating sheet 10 is moved down via a control roller, the adhesive coating part of the sheet 10 is laminated to a base material 15, and the sheet 10 is drawn from a coating sheet supply unit by the drive of a drive roller 3. At this time, the upper surface of the material 15 is pressed to the material 15 having, for example, 200 to 660mm of relatively large width by a wide pressing roller 41, and pressed to the material 15 having, for example, 20 to 100mm of narrow width by a small-width pressing roller 42. A small-width drive roller 31 is laterally slidably provided in the width direction of a conveying passage 14 to variably set the distance between the rollers, thereby eliminating the adherence of the adhesive at the end side of the sheet 10 to the roller 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminator, and more particularly to a laminator for preventing wrinkles of a covering sheet.

[0002]

2. Description of the Related Art In a laminator in which a cover sheet and a base material are pressure-bonded via an adhesive, the cover sheet is attached mainly to a bar having a relatively narrow width.

Further, recently, a laminator for adhering a covering sheet to a panel having a relatively wide width has been emerging.

A big difference between the laminator for a narrow bar and the laminator for a wide panel is that the width of the pressing roller pressed against the upper surface of the base material via the covering sheet is wide and narrow. There is a point.

[0005]

In a laminator for a wide panel, the drive roller facing the wide pressing roller is a drive roller having a constant width in the width direction of the conveying path, and therefore the coating is performed. When pressing the upper surface of the sheet, the adhesive on the edge side of the cover sheet (the edge side of the cover sheet coated with the adhesive) adheres to the drive roller, and when the base sheet is wrapped with the cover sheet, wrinkles are formed on the cover sheet. It has the drawback of occurring.

An object of the present invention is to provide a laminator which eliminates the above-mentioned conventional problems.

[0007]

In order to achieve the above object, a laminator of the present invention is a laminator which presses a cover sheet and a base material together with an adhesive and is provided in a conveying path. A driving roller that conveys the sheet, a wide pressing roller that is located on the driving roller, presses the upper surface of the base material through the cover sheet, and has a pressing surface that is long in the width direction of the transfer path; A coating sheet supply unit for supplying a coating sheet, an application unit for applying an adhesive to the coating sheet supplied from the coating sheet supply unit, and an adhesive for the coating sheet coated with an adhesive at the application unit. A drying unit for drying and a coating sheet regulating roller for guiding the coating sheet located in the drying unit to the transport path located below, and the coating sheet sequentially in the flow direction of the coating sheet. Supply unit, the coating unit, the drying unit,
The covering sheet regulating roller is linearly arranged, the covering sheet feeding section, the applying section, the drying section, the covering sheet regulating roller is positioned above the wide pressing roller, and the driving roller, The drive roller facing the wide pressing roller is formed by a narrow drive roller having a narrow width in the width direction of the conveyance path, and the narrow drive rollers are arranged in parallel in the width direction of the conveyance path. The narrow drive rollers are slidably attached in the width direction of the conveyance path so that the distance between the narrow drive rollers can be varied.

The laminator of the present invention is a laminator for press-bonding a cover sheet and a base material via an adhesive, and is provided on a conveying path and drives a roller for conveying the base material and a position above the drive roller. Then, a wide pressing roller having a pressing surface that is long in the width direction of the transport path while pressing the upper surface of the base material through the covering sheet, a covering sheet supply unit that supplies the covering sheet, and the covering sheet. An application unit for applying an adhesive to the coating sheet supplied from the supply unit, a drying unit for drying the adhesive of the coating sheet coated with the adhesive at the application unit, and the coating located at the drying unit. A coated sheet regulating roller that guides the sheet to the transport path located below, and sequentially covers the coated sheet supply unit, the coating unit, the drying unit, and the coated sheet in the flow direction of the coated sheet. The regulating roller is arranged linearly, and the covering sheet feeding section, the coating section, the drying section, and the covering sheet regulating roller are located above the wide pressing roller, and the wide pressing section of the driving roller is arranged. The drive roller facing the attaching roller is formed by a narrow width drive roller having a narrow width in the width direction of the conveyance path, and the narrow width drive rollers are arranged in parallel in the width direction of the conveyance path. The narrow drive rollers are slidably mounted in the width direction of the conveyance path so that the distance between the narrow drive rollers can be varied, and the drive source of the wide pressing roller is a belt drive.

[0009]

In the laminator according to the first aspect of the present invention, the narrow-width driving is arranged in parallel in consideration of the width of the base material, the amount of the covering sheet taken up, etc. so that the adhesive on the end side of the covering sheet does not adhere to the driving roller. Adjust the distance between the rollers.

Further, in the laminator according to the second aspect, when a strong force is applied to the surface with which the wide presser roller abuts due to the shape of the base material or the like, the drive source of the wide presser roller is a belt drive, and thus the wide presser roller is driven. The attachment roller slips.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 to 16, reference numeral 1 denotes a cover sheet and a base material which are pressure-bonded to each other with an adhesive, and the base material wraps the cover sheet. It is a machine called a "laminator".

As shown in FIG. 1, the laminator 1 has a cover sheet supply section 11 for supplying a cover sheet 10 to the upper side,
A coating section 12 for applying an adhesive to the coating sheet 10 supplied from the coating sheet supply section 11, and a drying section 13 for drying the adhesive of the coating sheet 10 coated with the adhesive by the coating section 12.
And a cover sheet regulating roller 2 for guiding the cover sheet 10 located in the drying section 13 to the side of the conveying path 14 located below.

Then, as shown in FIG. 2, the covering sheet 10
In the flow direction of the coating sheet supply unit 11, the coating unit 12,
The drying unit 13 and the covering sheet regulating roller 2 are linearly arranged.

Further, as shown in FIGS. 1 and 3, the covering sheet supplying section 11, the coating section 12, the drying section 13, and the covering sheet regulating roller 2 are supported by a wide pressing roller 41 and a narrow pressing roller which will be described later. It is located above the member 40.

The cover sheet supply unit 11 applies a cover sheet 10, for example, a roll-wound veneer (the cover sheet 10 may be, for example, vinyl chloride, print paper, polyester, etc., in addition to the veneer plate). It is about to be supplied to the 12 side.

The coating part 12 is, for example, a well-known knife coat (not shown), and an adhesive (for example, polyurethane, hot melt, vinyl acetate, polyamide) is applied to the back surface of the covering sheet 10 through a gate (not shown). System adhesive etc.) is applied.

The drying unit 13 is provided with, for example, a heater, an intake fan, an exhaust fan, etc., which are not shown, inside the passage.
The inside of the passage is in a high temperature state in order to dry the adhesive applied to the back surface of the covering sheet 10.

As shown in FIG. 15, the cover sheet regulating roller 2 guides the cover sheet 10 located in the drying section 13 to the side of the conveying path 14 located below the cover sheet regulating roller 2. The covering sheet 10 can be stably supplied to the bonding end surface position of the base material 15.

That is, the center of the base material 15 is, for example,
If the edges of the coating sheet 10 to be coated on the base material 15 are determined by transporting in accordance with the center of the transport path 14, and by controlling the edge portions of the coating sheet 10, the coating sheet 10 of the base material 15 is It can be stably supplied to the position of the bonding end surface. The covering sheet detecting means 21 detects the position of the covering sheet 10 (for example, the edge portion of the covering sheet 10), and is, for example, a PS-250 manufactured by Mitsuhashi Manufacturing Co., Ltd.
As shown in (A) and (C), the cover sheet 10 to be detected is positioned between the light projecting element and the light receiving element facing each other, and the control setting position is set to the center of the light projecting element and the center of the light receiving element. In addition, the shift is performed by detecting a minute voltage change of the light receiving element.

Reference numeral 25 denotes a cover sheet regulating roller position correcting means, and the cover sheet regulating roller position correcting means 25 corrects the position of the cover sheet regulating roller 2 based on the detection result of the cover sheet detecting means 21. In the first embodiment, the shaft 26 that supports the cover sheet regulating roller 2 is slightly rotated clockwise or counterclockwise with respect to the transport path 14.
(For example, when the covering sheet detecting means 21 detects that the edge of the covering sheet 10 is at the solid line position shown in FIG. 16 (A), the covering sheet regulating roller position correcting means 25 operates to rotate the ball screw 27. Then, the shaft 26 can be slightly rotated counterclockwise to control the edge of the covering sheet 10 to the position shown in FIG. 16 (C).) One end of the shaft 26 is a slider screwed to the ball screw 27.
28, and the other end of the shaft 26 is connected to a slider 28 'which slides on a slide shaft 27'.

Then, these covering sheet regulating rollers 2,
The covering sheet detecting means 21 and the covering sheet regulating roller position correcting means 25 are integrated into a unit (reference numeral 100) and can be moved in the conveying direction of the drive roller 3 by the moving means 6 (see FIGS. 4 and 5). .

The moving means 6 is provided, for example, by providing a groove (not shown) on the side of the above-mentioned integrated unit (reference numeral 100) so as to slide the convex portion 62 provided on the frame 61, for example. , It is performed by manually moving it.

In FIG. 4, when the width of the base material 15 is narrow, the position of the covering sheet regulating roller 2 is the position of the broken line, and when the width of the base material 15 is wide, the position of the covering sheet regulating roller 2 is the solid line. Is the position.

Although the cover sheet regulating roller 2 shown in this embodiment has a single movable structure, the first cover sheet regulating roller 2 fixed to the solid line position of the cover sheet regulating roller 2 ( Alternatively, a second cover sheet restriction roller (not shown) fixed to the position of the broken line of the cover sheet restriction roller 2 may be used.

In this case, the first cover sheet regulating roller (not shown) is arranged such that the cover sheet 10 located in the drying section 13 is conveyed to the conveying path 14 upstream of the wide pressing roller 41 located below.
The second cover sheet regulating roller (not shown) is a wide cover roller that is upstream of the narrow press roller 42 located below the cover sheet 10 located in the drying unit 13. It leads to the transport path 14 on the downstream side of 41.

On the other hand, as shown in FIG. 1, a conveying path 14 is provided below the laminator 1, and the conveying path 14 has
A drive roller 3 that conveys the base material 15 is provided.

The drive roller 3 is adapted to rotate via a gear 39 'screwed onto a rotating shaft 39 which rotates in the forward and reverse directions (see FIG.
12, see FIG. 13 and FIG. 14).

Reference numeral 16 denotes a base material supply unit, which supplies the base material 15 (the base material 15 is, for example, wood, plastic, particle board, etc.) to the roller pressure bonding unit 4 side.

As shown in FIG. 3, the roller crimping section 4 is roughly configured so that the conveying path 14 can be used for a wide and narrow base material.
Wide pressing portion 4A used when the width of the base material 15 is wide on the front side of (the upper surface of the base material 15 is pressed via the covering sheet 10)
And a narrow pressing portion 4B used when the width of the base material 15 is narrow in the middle of the transport path 14.

When the width of the base material 15 is large, the narrow width pressing portion 4B holds the side surface pressing roller S and the bottom surface pressing roller S for pressing the side surface and the lower surface of the base material 15 through the covering sheet 10, respectively. The roller T is arranged (see FIG. 9).

As shown in FIG. 8, the wide presser portion 4A is provided with, for example, three wide presser rollers 41 having a presser surface that is long in the width direction of the conveying path 14 and arranged in parallel. . The wide pressing roller 41 is located on the drive roller 3 and presses the upper surface of the base material 15 via the covering sheet.

Further, the wide pressing roller 41 is moved up and down with respect to the conveying path 14 by the lifting means 5 as shown in FIG. The elevating means 5 is, for example, a wide pressing roller 41.
The handle 54 is moved up and down in the vertical direction by manually turning the rotating shaft 53, which is provided on the member 51 attached to and is screwed to the screw 52. Further, the wide pressing roller 41 is, for example,
The material is EPDM, and it is made soft (rubber hardness is 15 degrees or less). The wide pressing roller 41 is heated and driven by a far infrared heater (not shown) in order to soften the covering sheet 10.

The driving is performed by, for example, the wide pressing roller 41.
In order to prevent abrasion of the flat belt 41 ', the flat belt 41' is configured to slip when a strong force is applied (see FIG. 11).

The flat belt 41 'is wound around a drive roll E, a lower press roll F, an upper press roll G, and a tension roll H. The drive source is the drive roll E, and the lower press roll F and the upper press roll G are The raising and lowering means 5 raises and lowers together with the wide pressing roller 41.

Further, among the driving rollers 3, the driving roller 3 facing the wide pressing roller 41 is formed by a narrow width driving roller 31 having a narrow width in the width direction of the conveying path 14. The narrow drive rollers 31 are arranged side by side in the width direction of the transport path 14,
The narrow drive rollers 31 can be slid (moved in a contact state) in the width direction of the conveyance path 14 so that the distance between the narrow drive rollers 31 can be varied.
A key that engages with a key groove provided in the above is slid on a rotary shaft 33 integrally provided, and is fixed with a bolt 34 at a predetermined position (see FIG. 10). The distance between the narrow driving rollers 31 arranged side by side is the width and thickness of the base material 15 and the covering sheet 10.
It is adjusted in consideration of the entrainment amount and the like.

On the other hand, the narrow width pressing portion 4B is provided with a narrow width pressing roller 42 having a short pressing surface in the width direction of the conveying path 14, and the narrow width pressing roller 42 is located above the driving roller 3. The upper surface of the base material 15 is pressed down via the cover sheet 10.

Incidentally, M and N are covering sheet regulating rollers 2
Is a guide roller that changes the direction of the covering sheet 10 guided downward by a horizontal direction.

When the laminator 1 is started, the covering sheet 10 is lowered through the covering sheet regulating roller 2, and the adhesive-coated portion of the covering sheet 10 is attached to the base material 15,
When the drive roller 3 is driven, its transport force causes
The cover sheet 10 is pulled out from the cover sheet supply unit 11.

The width of the substrate 15 to be treated is, for example,
Even if it changes from 10 mm to 600 mm, the width is relatively wide, for example,
The pressing of the upper surface of the base material 15 against the base material 15 of 200 mm to 600 mm is performed by the wide presser roller 42 as shown in FIG.

In this case, the narrow width pressing portion 4B is provided with the side surface pressing roller S and the lower surface pressing roller T for pressing the side surface and the lower surface of the base material 15 via the covering sheet 10 (see FIG. 9). ). The cover sheet regulation roller 2 is
It is at the position indicated by the solid line in FIG.

Next, the width is relatively narrow, for example, 20 mm to 10
The narrower pressing roller 42 presses the upper surface of the base material 15 against the base material 15 of 0 mm (see FIG. 7).

As described above, the surface of each of the bar member having a width of, for example, 20 mm to 100 mm and the panel member having a width of, for example, 200 mm to 600 mm can be coated with a single machine.

That is, even if the width of the base material 15 to be processed changes, for example, from 10 mm to 600 mm, the pressing of the upper surface of the base material 15 through the covering sheet 10 can be performed with the wide pressing roller 42 or the narrow pressing roller 42. The width-holding roller 42 and the width-holding roller 42 can be selectively used, and the covering sheet 10 can be adhered efficiently, and the wide-width pressing roller is used to hold the upper surface of the base material against the narrow base material as in the conventional case. The wide pressing roller is locally worn, and it is possible to eliminate the disadvantage that the pressing of the upper surface of the base material against the wide base material becomes uneven, and moreover, the width is narrow and the thickness of the base material 15 is small. When the base material 15 is conveyed by the drive roller 2, if the wide presser roller 41 located on the drive roller 2 interferes with the passage of the base material 15, the elevating means 5 presses the wide base material. Transport roller 41
It is possible to raise the substrate 14 without any trouble, and the substrate 15 can be smoothly supplied to the narrow pressing roller 42 (see FIG. 6).

If the driving roller 3 facing the wide pressing roller 41 has a constant (fixed) width in the width direction of the conveying path 14, when the upper surface of the covering sheet 10 is pressed, the edge of the covering sheet 10 is pressed. Adhesive on the side adheres to the driving roller 3 and wrinkles occur when the base material 15 is wrapped with the covering sheet 10. However, according to the present embodiment, narrow-width driving arranged in parallel according to the width of the base material 15 is performed. The distance between the rollers 31 can be made variable so that the adhesive on the end side of the cover sheet 10 does not adhere to the drive roller 3 to eliminate wrinkles, and the drive roller 3 facing the wide pressing roller 41 is If the width is fixed (fixed) in the width direction of the transport path, for example, the substrate 10 having an L-shaped cross section cannot be transported, and the substrate 15 cannot be coated with the coating sheet 10. According to the present embodiment, depending on the shape of the base material 15, the narrow drive roller 31 that is in parallel contact with The move may be by conveying the base material 15 in the narrow driving roller 31 is stuck to the substrate 15 in the cover sheet 10 (see FIG. 10).

Further, by providing the moving means 6, the cover sheet regulating roller 2 can be made single, and fine adjustment of the cover sheet 10 with respect to the base material 15 can be performed by a single cover sheet detecting means and guide roller position correction. This can be done by means (see FIGS. 4, 5 and 16).

In this embodiment, the base material of 20 mm to 100 mm is also targeted, but the width of the base material 15 to be treated is wide to some extent, for example, the base material of 200 mm to 600 mm is dedicated. The same can be applied to the thing.

In such a case, a side surface pressing roller S and a lower surface pressing roller T for pressing the side surface and the lower surface of the base material 15 via the covering sheet 10 are arranged in the narrow width pressing portion 4B. The side surface pressing roller S and the lower surface pressing roller T are supported by the narrow width pressing roller supporting member 40.

[0048]

EFFECTS OF THE INVENTION If the driving roller facing the wide pressing roller has a constant (fixed) width in the width direction of the conveying path, the adhesive on the end side of the covering sheet is pressed when pressing the upper surface of the covering sheet. Adheres to the drive rollers and wrinkles occur in the cover sheet when the base sheet is wrapped with the cover sheet. According to the invention of claim 1, between the narrow drive rollers arranged in parallel according to the width of the base material. The distance can be made variable so that the adhesive on the end portion side of the cover sheet does not adhere to the drive roller, and wrinkles of the cover sheet can be prevented.

If the driving roller facing the wide pressing roller has a constant (fixed) width in the width direction of the conveying path, for example, a substrate having an L-shaped cross section cannot be conveyed. The base material cannot be covered with the cover sheet,
According to the first aspect of the present invention, depending on the shape of the base material, the narrow width drive rollers are moved in parallel, and the narrow width drive roller conveys the base material to form the covering sheet. Can be attached.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention described above, when a strong force is applied to the surface with which the wide pressing roller abuts due to the shape of the base material or the like, the wide pressing roller is widened. Since the drive source of the pressing roller is driven by a belt, the wide pressing roller slips and the wide pressing roller is prevented from being worn.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a laminator according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of FIG.

FIG. 3 is a partially enlarged schematic side view of FIG. 1.

FIG. 4 is an explanatory view for explaining the movement of the cover sheet regulating roller in a plan view.

FIG. 5 is an explanatory view for explaining the movement of the cover sheet regulating roller as viewed from the side.

FIG. 6 is a schematic side view showing a use state in which a substrate having a narrow width is coated with a coating sheet.

FIG. 7 is an explanatory diagram for explaining, in a front view, a use state in which a base material having a narrow width is coated with a coating sheet.

FIG. 8 is a schematic side view showing a use state in which a wide base material is coated with a coating sheet.

FIG. 9 is an explanatory view for explaining a usage state in which a wide base material is coated with a coating sheet when viewed from the front.

FIG. 10 is an explanatory diagram for explaining a usage state in which a wide base material is coated with a coating sheet as viewed from the front.

FIG. 11 is an explanatory diagram for explaining driving of the wide presser roller from a side view.

FIG. 12 is an explanatory diagram for directly explaining the action of the narrow width driving roller when a wide base material is conveyed by the narrow width driving roller.

FIG. 13 is an explanatory diagram for explaining in front view the action of the narrow-width driving roller when a narrow-width base material is conveyed by the narrow-width driving roller.

FIG. 14 is an explanatory diagram for partially explaining the action of the narrow-width driving roller when a wide base material is conveyed by the narrow-width driving roller, and is viewed from the side.

FIG. 15 (A) is an explanatory view for explaining the cover sheet regulating roller in a plan view, and FIG. 15 (B) is an explanatory view for explaining the cover sheet regulating roller in a side view.

FIG. 16A is an explanatory view for explaining the position control of the covering sheet by the covering sheet regulating roller when viewed from the front, and FIG. 16B is a plan view for explaining the position control of the covering sheet by the covering sheet regulating roller. FIG.
FIG. 6C is an explanatory diagram for explaining the result of controlling the position of the covering sheet by the covering sheet regulating roller and controlling the covering sheet to an appropriate position when viewed from the front.

[Explanation of symbols]

 1 Laminator 2 Covering sheet regulating roller 3 Driving roller 5 Elevating means 10 Covering sheet 11 Covering sheet supply section 12 Coating section 13 Drying section 14 Conveying path 15 Base material 41 Wide pressing roller

Claims (2)

[Claims] 1. A laminator for press-bonding a cover sheet and a base material via an adhesive, the drive roller being provided in a transfer path for transferring the base material, and the drive roller positioned on the drive roller. A wide pressing roller that presses the upper surface of the base material through a sheet and has a pressing surface that is long in the width direction of the transport path, a covering sheet supply unit that supplies the covering sheet, and a supply from the covering sheet supply unit An applying section for applying an adhesive to the coated sheet, a drying section for drying the adhesive of the coating sheet coated with an adhesive at the applying section, and the coating sheet located in the drying section downward A cover sheet regulating roller that guides to the transporting path that is positioned, and the cover sheet supplying unit, the applying unit, the drying unit, and the cover sheet regulating roller are directly arranged in the flow direction of the cover sheet. Arranged linearly, the cover sheet supply unit, the coating unit, the drying unit, and the cover sheet regulation roller are positioned above the wide presser roller, and face the wide presser roller among the drive rollers. The drive roller is formed by a narrow width drive roller having a narrow width in the width direction of the conveying path, and the narrow width drive rollers are arranged in parallel in the width direction of the conveying path and are arranged in parallel. A laminator characterized in that a narrow drive roller is attached so as to be slidable in the width direction of the conveyance path so that the distance between the rollers can be varied. 2. A laminator for press-bonding a cover sheet and a base material via an adhesive, the drive roller being provided in a transfer path for transferring the base material, and the drive roller positioned on the drive roller, A wide pressing roller that presses the upper surface of the base material through a sheet and has a pressing surface that is long in the width direction of the transport path, a covering sheet supply unit that supplies the covering sheet, and a supply from the covering sheet supply unit An applying section for applying an adhesive to the coated sheet, a drying section for drying the adhesive of the coating sheet coated with an adhesive at the applying section, and the coating sheet located in the drying section downward A cover sheet regulating roller that guides to the transporting path that is positioned, and the cover sheet supplying unit, the applying unit, the drying unit, and the cover sheet regulating roller are directly arranged in the flow direction of the cover sheet. Arranged linearly, the cover sheet supply unit, the coating unit, the drying unit, and the cover sheet regulation roller are positioned above the wide presser roller, and face the wide presser roller among the drive rollers. The drive roller is formed by a narrow width drive roller having a narrow width in the width direction of the conveying path, and the narrow width drive rollers are arranged in parallel in the width direction of the conveying path and are arranged in parallel. A laminator characterized in that a narrow drive roller is slidably attached in the width direction of the conveyance path so that the distance between them can be varied, and the drive source of the wide pressing roller is a belt drive.