Winding spool

Abstract

The invention relates to a winding spool, made of two spool bodies stuck to each other, which has a cylindrical reel barrel and two lateral spool flanges, the abutting surfaces extending radially, preferably, in the middle of said winding barrel. Said winding spool also comprises adhesive tongues, which are formed on said abutting surfaces and engage into corresponding insertion pockets of the other respective spool body. The aim of the invention is to optimally design the joining area of both spool bodies, in order to provide the rotational accuracy as well as to avoid edges and deformations in said joining area. Said aim is achieved, whereby the winding spool is deigned, such that the spool bodies are joined to each other positively or non-positively and the application force, which acts on the contact surfaces, is increased. The adhesive tongues, projecting from said abutting surfaces, extend in the shape of a semicircle and the insertion pockets have corresponding shape. Moreover, said adhesive tongues have flattenings on the free ends thereof and said insertion pockets have corresponding inner areas. Said winding spool is particularly suitable for winding components for producing electronic components.

What is claimed is:  
     
         1 . Winding spool, especially for band- and thread-shaped winding material, with a cylindrical winding barrel and two lateral spool flanges, and which is formed from two spool bodies glued together, wherein the joint surfaces run radially, preferably in the middle of the winding barrel, and the connection region has glue tongues formed alternately on the spool bodies, which engage with corresponding insert pockets of the other particular spool body, wherein to increase the pressing force acting on the contact surfaces of the connection region, the spool bodies have both a positive fit and a force fit with each other.  
     
     
         2 . The winding spool according to  claim 1 , wherein the glue tongues, projecting relative to the joint surfaces, run in an arc, preferably a semicircle, and the insert pockets have a corresponding shape.  
     
     
         3 . The winding spool according to  claim 1 , wherein the glue tongues projecting relative to the joint surfaces have flattenings at the free sides opposite the joint surfaces, and the insert pockets have corresponding filler pieces.  
     
     
         4 . The winding spool according to  claim 1 , wherein the glue tongues projecting relative to the joint surfaces have bevels at the free sides opposite the joint surfaces, which lie facing the axis of rotation of the winding spool.  
     
     
         5 . The winding spool according to  claim 3 , wherein the glue tongues projecting relative to the joint surfaces are rectangular or quadrangular in shape.