JPH024842U - - Google Patents

Description

[Brief explanation of drawings]

Figures 1 to 4 are views showing an embodiment of a ribbon unwinding device according to the present invention, with Figure 1 being a partial front sectional view thereof, and Figure 2 showing the new core and the old core. Fig. 3 is a front partial cross-sectional view at the time of replacement, Fig. 3 is a view taken in the direction of the − arrow in Fig. 2, and Fig. 4 shows the action of the sensor that detects the splicing position of the ribbon wound around the new core. FIG. 3 is a front view of the main part of FIG. 2 shown in FIG. 5 to 7 are diagrams showing a conventional ribbon unwinding device, in which FIG. 5 is a front view thereof, FIG. 6 is a front view when the new core and old core are replaced, and FIG. The figure is a view taken along the - arrow in FIG. 21... Turret arm, 22... Unwinding device, {
23...New winding core, 24...Old winding core} (two new and old winding cores), 28...Fixed frame (support body), 37,3
8... Thin strip body, 37a... Outer periphery, 41... Sensor, 51
...Press roller, 55...Cutter.

Claims (1)

[Scope of utility model registration request] At least two cores, a new core and an old core, on which the thin strip is wound and each rotates to unwind the thin strip, are rotatably supported, and rotated to change the position of the new core to the position of the old core. A turret arm that is replaced one after another, a support that rotatably supports the turret arm, and a sensor that detects the outer circumference of the thin strip of the new core that has been replaced and stops the turret arm. It is equipped with a pressing roller that presses the thin strip of the old winding core against the outer periphery of the thin ribbon of the new winding core at a predetermined position, and a cutter that cuts the thin ribbon of the old winding core, and unwinds it from the old winding core. The thin strip of the new core is pressed against the thin strip of the new core by the pressing roller and spliced, and the thin strip of the old core is cut by a cutter upstream of a predetermined position pressed by the pressing roller. , in a thin strip unwinding device that continues unwinding when the new and old cores are replaced, the sensor is movably provided on the support, and when the new core and the old core are replaced, A thin ribbon unwinding device characterized in that the outer periphery of a thin ribbon wound around a new core is detected.