JPS6227073A - Device for coating material on sheet - Google Patents

Abstract

PURPOSE:To prevent the cutting of a sheet and to improve the productivity when a material is coated on the sheet with a knife coater by detecting the seam of the sheet by a sensor and raising the knife coater. CONSTITUTION:The seam 2 of a sheet 1 is detected by a sensor 3 provided in the vicinity of the sheet 1 which is continuously delivered and a material is coated on the upper surface of the sheet 1 by a knife coater 4 which is arranged above the sheet 1 on the downstream side of the sensor 3 in the traveling direction of the sheet 1. The knife coater 4 is raised by a driving means 5 consisting of cylinders 6a and 6b on the basis of the signal detected by the sensor 3. Consequently, the material can be continuously coated on the sheet without cutting the sheet and the productivity can be improved.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a material application device for sheets, which uses a knife coater to apply materials such as paints and adhesives onto the upper surface of spliced long sheets. be.

[Background Art] When continuously conveying long sheets, the length of the sheets may not be sufficient, so a plurality of sheets may be joined together. At that time, when a material such as paint or adhesive is applied to the top surface of the sheet using a knife coater, there is a problem in that the seam portion of the sheet gets caught by the knife coater and tension is applied to the sheet, causing the sheet to break.

[Object of the Invention] The present invention has been made in view of the above points, and provides a sheet that can prevent breakage of the sheet and improve productivity when applying a material onto the sheet with a knife coater. The object of the present invention is to provide an apparatus for applying a material to a material.

[Disclosure of the Invention] That is, the apparatus for applying material to a sheet of the present invention includes a sensor 3 that is disposed near a continuously fed sheet 1 and detects a seam 2 of the sheet 1, and a sensor 3 that detects a seam 2 of the sheet 1.
A knife coater 4 which is disposed above the sheet 1 in the transport direction of the sheet 1 and applies the material 7 to the upper surface of the sheet 1, and a drive means 5 which moves the knife coater 4 upward based on a signal from the sensor 3. The above object is achieved by detecting the seam 2 of the sheet 1 with a sensor 3 and raising the knife coater 4.

As shown in Figures 0w & 1 and Figure 2 below, which will explain the present invention in detail based on examples, a long sheet 1 is continuously fed while being unwound, and the sheet 1 is placed at an upper position. A sensor 3 is provided to detect the seam 2 of the seam 1. Further, a knife coater 4 is disposed at a position above the sheet 1 on the side in the conveying direction of the sheet 1 from the sensor 3.

The knife coater 4 has a knife protruding from its lower surface, and the lower end of the knife is placed on the sheet 1 with a small gap therebetween.
This is to uniformly apply paint, adhesive, etc. onto the sheet 1. Movable pieces 8, 8 extend from both ends of the knife coater 4, and cylinders 6a, 6b are provided as driving means 5 on the upper and lower surfaces of the movable piece 8, respectively. Rods 9, 9 are provided in each of the cylinders 6a, 6b so as to be able to protrude and retract, and each rod 9 is fixed to the movable piece 8.

The lower cylinder 6b always urges the movable piece 8 upward, and the upper cylinder 68 always urges the movable piece 8 downward. Under normal conditions, the knife coater 4 and the sheet 1
Both cylinders 6at so that there is a set gap between
The urging force of 6b is adjusted. Further, when the sensor 3 detects the seam 2 of the sheet 1, the detection signal of the sensor 3 is transmitted to the cylinder 6, and the knife coater 4 is moved upward by removing air from the upper cylinder 6a. ing. Therefore, sheet 1 has seam 2
In such a case, by moving the knife coater 4 upward, it is possible to prevent the knife of the knife coater 4 from getting caught on the sheet 1, and it is possible to prevent the sheet 1 from being broken.

Moreover, the response when the knife coater 4 is raised can be improved. Thereafter, when the sensor 3 no longer detects the seam 2 of the sheet 1, air enters the upper cylinder 6a again, and the knife coater 4 descends to a position where it maintains the set gap with the sheet 1.

[Effects of the Invention] As described above, the present invention includes a sensor that is disposed near the sheets that are continuously fed and detects the seam of the sheets, and a sensor that is located above the sheet on the side of the sheet conveyance direction from the sensor. Since it is equipped with a knife coater that is placed at a certain position and applies the material to the top surface of the sheet, and a drive means that moves the knife coater upward based on a signal from a sensor, it is possible to continuously apply the material on the sheet without breaking the sheet. This makes it possible to improve productivity.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the present invention, and FIG. 2 is a schematic front view of the same. 1 is a sheet, 2 is a soil joint, 3 is a sensor, 4 is a knife coater, 5 is a driving means, 6 is a cylinder, and 7 is a material.

Claims (2)

[Claims] (1) A sensor is placed near the sheets that are continuously fed to detect the seam of the sheets, and a sensor is placed above the sheet in the sheet conveyance direction from the sensor to detect the seam between the sheets. 1. An apparatus for coating a material onto a sheet, comprising: a knife coater for coating a material; and a drive means for moving the knife coater upward based on a detection signal from a sensor. (2) The driving means is composed of a cylinder arranged above the knife coater to urge the knife coater downward, and a cylinder arranged below the knife coater to urge the knife coater upward. An apparatus for applying material to a sheet according to claim 1, characterized in that: