| 摘要 |
The present invention relates to an area-adjustable glue including multiple glue pull-out units and a means for pulling out the pull-out units in a stepwise manner to adjust a glue contact area according to a coating area. The area-adjustable glue unit includes: a case unit including a cylindrical tube body having at least one open end and a cover which is arranged on the open end to be opened or closed; a rotating unit including a rotary handle which is coupled to the other end of the tube body to be able to freely rotate and a rotary shaft which is fixed to the rotary handle, is inserted in the length direction of the tube body, and comes in a pole shape having screw threads formed on the surface while having one or more lubricating strips formed along the circumference; and the glue pull-out units including a movable disc which is fitted to the circumference of the rotary shaft in the tube body in a vertical direction while having a screw groove formed on the inner peripheral surface, a glue support which is a cylinder surrounding the circumference of the rotary shaft and coupled to the movable disc in a direction toward the opening surface of the cylinder, and a cylinder glue unit which is coupled to an end of the glue support in a direction the glue support is extended to. The glue pull-out units come in a number equal to or larger than two. Each of the glue supports and each of cylinder glue units have different inner and outer diameters. A pair of one glue support and one cylinder glue unit is placed in a concentric arrangement to surround another pair of one glue support and one cylinder glue unit. The lubricating strip is arranged between respective movable discs. |
