JPS60139429A - Sheet covering for rod material - Google Patents

Abstract

PURPOSE:To enable the covering of a sheet without causing any deficiency thereof by applying the portion thereof left below the covered side portion on the undersurface of work eliminating the fluttering thereof with the blowing of air when the undersurface of the work is covered. CONSTITUTION:The portion 8a sagging downward of a sheet 8 is previously worked to fold along the side rim of the undersurface of a rod material 4 with a lower rim pressing roller 13 and made to approach the surface of the rod material 4 with the lower rim pressing roller 13 gradually varied in the angle to adhere to the undersurface thereof 4 with an undersurface pressing roller 14. While the sagging portion 8a is adhered thereto, air F is blown against the sagging portion 8b from an air blower 16 to be shifted to one side being lifted with the lower rim pressing roller. In this manner, the sagging portion 8a is applied on the rod material 4 sequentially from one side rim 4a to another 4b of the undersurface thereof thereby ensuring a better adhesion to the entire undersurface of the rod material 4. This reduces the fraction defective to allow the raising of the speed of the line.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method of coating a decorative sheet such as a vinyl chloride sheet onto a bar used as a decorative frame material or the like.

[Background technology]

Conventionally, as shown in FIG. 1, a decorative frame material has been manufactured by covering a bar material 1 with a decorative sheet 2 such as a vinyl chloride sheet. The sheet 2 is fed from a sheet roll onto the top surface of the bar l being conveyed by a conveyor, and is sequentially coated from the top surface to the side and bottom surfaces as shown in FIG. The coating operation is carried out using rollers etc. at various angles. However, the downward protruding portion 2g of the sheet 2 flutters, and as a result, a defective coating portion 2b may be formed on the sheet 2 due to poor adhesion, as shown in FIG.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for coating a bar with a sheet, which can coat the sheet without producing a defective portion.

[Disclosure of the invention]

The method of coating a bar with a sheet according to the present invention is a method in which a belt-shaped sheet is fed onto the top surface of the bar while being conveyed by a conveyor, and coating is performed sequentially from the top surface to the side surface and bottom surface, the method comprising:
This method is characterized in that when coating the lower surface, the portion of the sheet protruding downward from the side surface coating portion is coated on the lower surface while eliminating flapping by blowing air.

Embodiment An embodiment of the present invention is shown in FIGS. 4 to 6. First, the coating device will be explained. In fig.

A conveyor 3 conveys the bar material 4 in the longitudinal direction, and is a roller conveyor. A covered roller group 5 is provided above the conveyor 8, and a sheet feeding device f6 is provided on the upper side thereof. A sheet cutting device 7 is provided on the lower side. The sheet feeding device 6 feeds a band-shaped decorative sheet 8 from a sheet roll (not shown) and feeds it onto the bar 1, and includes sheet roll support means, a guide roller 9, and a sheet feeding device 6. and means for applying adhesive to the back surface in the channel. The covered roller group 5 includes a horizontal upper surface pressing roller 10, a diagonal upper edge pressing roller 11, a vertical side pressing roller 12, and a diagonal lower edge pressing roller 13.
, a horizontal lower surface pressing roller 14 , and a vertical second side edge pressing roller 15 are sequentially arranged in appropriate numbers. The upper edge pressing rollers 11 are arranged so that the inclination angle gradually increases toward the lower side of the conveyor 3. Similarly, the lower edge pressing rollers 13 are arranged so that the inclination gradually becomes close to horizontal. The lower edge pressing sailor 13 is provided only on one side of the conveyor 3, and an air blowing device 16 is provided facing the other side.

The working bar 4 is conveyed longitudinally by a conveyor 3, onto which a sheet 8 is fed. The sheet 8 is fed so as to extend over the bar 4 in one stroke, and the upper surface covered portion is pressed and adhered to the bar 4 by an upper surface pressing roller 10 (FIG. 6). As the bar 4 advances, the protruding portions on both sides of the sheet 8 are creased along the upper side edges of the bar 4 by the upper edge pressing rollers 11 (FIG. 6(B)), and the side pressing rollers 1
2 to the side surface of the bar 4 (FIG. 60). sheet 8
The part 8a that hangs further downward is folded along the lower side edge of the bar 4 by the lower edge pressing roller 13 (FIG. 6D)), and the lower edge pressing roller 13 is folded at a gradually different angle. ]3
The lower surface of the bar 4 is brought close to the lower surface of the bar 4, and the lower surface valve is bonded to the lower surface of the bar 4 by the rollers 14. While gluing the 9-hanging portion 8a, air F is blown from the air blowing device 16 to bring the dangling portion 8b to one side and lift it with a lower edge pressing roller.

Therefore, the hanging portion 8B is from the lower surface to the side edge 4 of the bar 4.
The adhesive is adhered in an orderly manner from the PA (FIG. 6 0) to the other side edge 4b, and the entire lower surface of the bar 4 is well adhered. Therefore, the defective rate is reduced and the line speed can be increased. After adhesion of the lower surface, adhesion is further performed using the second side pressing roller 15, and the coating is completed. After the coating is completed, the sheet 8 is cut by the sheet cutting device 7 at the rear end of the bar 4.

In addition, in the above embodiment, the bonding was performed using rollers with various inclination angles, but the coating may be performed using tapered rollers with various angles, and plate-shaped guides may be used instead of the rollers. It's okay. In that case as well, the effect of reducing adhesion defects due to air blowing can be obtained.

〔Effect of the invention〕

The bar sheet coating method of the present invention has a coating defect 811f.
This has the effect that the sheet can be coated without any formation.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a sheet-coated bar, Fig. 2 is a cross-sectional view of the coating process according to the conventional method, Fig. 3 is a cross-sectional view showing defects in coating according to the conventional method, and Fig. 4 is an embodiment of the present invention. 5 is a plan view thereof, and FIG. 6 is an explanatory view of the sheet covering process. 3...Conveyor, 4...Bar material 55...Coated roller group. 6... Sheet feeding device, 8... Sheet, 16...
Air blowing device No. 6 [4 (F)

Claims (1)

[Claims] The process of conveying the bar material in the longitudinal direction by a conveyor, and feeding a belt-shaped sheet on the conveyed bar material with a width that can cover the bar material from the upper surface to the lower surface thereof, with the sheet protruding from one side of the bar material. a step of pressing the sheet onto the upper surface of the bar material to cover it; a step of pressing a side protruding portion of the sheet onto the side surface of the bar material to cover it; and a step of covering the side surface of the sheet. A method for covering a bar with a sheet, the method comprising the step of blowing air from the other side of the bar while pressing the part hanging downward from the bar against the air flow to cover the upper surface of the bar.