JPH038684Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a terminal roll in which a large number of pressed terminals connected in a band shape are wound up for storage or supply to the next wire crimping process. This relates to a paper tube reel. (Prior Art) As shown in FIG. 9, this type of reel has flange plates 2 and 3 made of circular double-sided cardboard paper fixed to the open edges of both ends of a cylindrical paper tube 1. It is configured. This paper tube 1 and each flange plate 2, 3
Generally, the abutting portions of the two are simply glued with a vinyl acetate adhesive, as shown in FIG. 10. However, this fastening structure has weak adhesive strength and often separates easily.
Therefore, as shown in FIG. 11, a reinforcing liner 5 fitted inside the opening edge of the paper tube 1 is superimposed on each flange plate 2, 3, and these three are glued together with adhesive 4. A fastening structure is also adopted. However, this fastening structure has the problem that processing and bonding operations are complicated and costs are high. Furthermore, in order to solve the above-mentioned problems, the fixing structure shown in FIGS. 5 to 8 was also studied.
To explain this based on the drawing, the flange plate 2
The outer flute 2b is provided between the outer flute 2a and the center liner 2c, and the center liner 2c
An inner flute 2d is provided between the inner flute 2d and the inner liner 2e, and the inner flute 2d is formed by processing so-called double-sided corrugated cardboard into a circular shape by integrally polymerizing these two. A ring-shaped fitting groove 6 is provided on the inner surface of the flange plate 2 and fits into the opening edge of the paper tube 1 with a thickness and width t of the paper tube 1 . This fitting groove 6 is press-formed by a press-type punch 7 having a blade shape with cutting edges protruding on both sides as shown in FIG. Cut at two places on the inner and outer periphery to form two notches 6a and 6b.
and an inner flute 2 between the notches 6a and 6b.
d is compressed and deformed almost flatly toward the center liner 2c side. Then, as shown in FIGS. 5 and 6, the paper tube 1 is fitted into the fitting groove 6 with the adhesive 4 attached to the opening edge, and the paper tube 1 and the flange plate 2 are connected. It has a fixed structure that is integrally joined. However, in the case of this fastening structure, the inner liner portion within the fitting groove 6, which is divided by the two notches 6a and 6b and provided in a recessed manner, is likely to separate, and the inner liner 2e and the paper tube 1 The disadvantage was that the strength was weakened because the edges were not directly bonded to each other. (Problems to be Solved by the Invention) Therefore, the present invention aims to improve the above-mentioned conventional technology and provide a terminal-attached paper tube reel with a fastening structure that has sufficient adhesive strength and is relatively inexpensive. It is something. (Means for solving the problem) The gist of the present invention is to provide a ring-shaped fitting groove in the inner surface of each left and right flange plate formed of cardboard, and insert a paper tube into the fitting groove. In the terminal winding paper tube reel, which is formed by fitting the open end edges at both ends and integrally joining each flange plate to both ends of the paper tube with adhesive interposed between the two, the open end of the paper tube On the inner liner of the flange plate to which the edges are joined, a single notch is provided by cutting along either the inner or outer circumferential side of the opening edge, and at least Each fitting groove is formed by compressing and deforming the inner liner on the notch side in an inclined manner toward the flute side using the other inner liner part separated by the thickness width of the paper tube as a crease. This is a terminal winding paper tube reel which compresses and corrects the fold side at the opening edge when fitting the opening edge of the paper tube to make the inner liner surface in the fitting groove almost flat. . (Example) An example of the present invention will be described below based on FIGS. 1 to 4. The reel is composed of a paper tube 1 and flange plates 2 and 3 fixed to the opening edges at both ends, as in the case of the conventional example described above. Since they have the same configuration, the following description will particularly focus on the fixing structure of the paper tube 1 to one of the flange plates 2. The fastening structure according to this embodiment is different from the conventional fastening structure shown in FIGS. 5 to 8 in the structure of the fitting groove, as shown in FIG. 4. That is, as shown in FIG. 3, the inner surface of the flange plate 2 is pressed and formed by a tooth-shaped press-type punch 9 with a cutting edge protruding only on one side, and the inner liner 2e is formed as shown in FIG. The outer peripheral side of the paper tube 1 is cut to form a single notch 8a, and from the notch 8a, a part of the inner flute 2d is compressed and deformed in an inclined manner toward the central liner 2c with a width equal to or greater than the thickness width t of the paper tube 1. In this case, a fitting groove 8 is formed. As shown in FIGS. 1 and 2, when the paper tube 1 is fitted into the fitting groove 8 with the adhesive 4 attached to the opening edge, a recess is formed on the side opposite to the notch 8a. The provided inner liner portion is further compressed, and the inner liner within the fitting groove 8 is straightened to be substantially flat, and in this state, the paper tube 1 and the flange plate 2 are integrally joined. (Effect of the invention) The above-mentioned fitting groove 8 is processed on each flange plate 2,
3, it can be mass-produced in advance at a low cost using a press-type punch 9, and the subsequent assembly process can be easily carried out in the same manner as in the conventional example shown in FIG. This is comparable to the conventional example shown in FIG. Furthermore, unlike the conventional example shown in FIG. One side is cut by the notch 8a, but the other is continuous, so it is difficult to peel and has strong elasticity, and the surface of the liner is similar to the paper tube 1.
Since it is directly bonded to the edge of the holder, the adhesion strength is improved. Moreover, the structure of the punch for forming the fitting groove is simple and the forming operation is easy. The following table shows comparative data on the strength of each fastening structure. 【table】

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view of a fastening structure according to an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the same main part, Fig. 3 is a press type punch for forming a fitting groove of the same structure, and Fig. 4 is a Fig. 5 is a partial sectional view of the conventional fastening structure, Fig. 6 is an enlarged sectional view of the same main part, and Fig. 7 is a press for forming the fitting groove of the same structure. Figure 8 is an enlarged sectional view of the fitting groove portion of the mold punch, Figure 9 is an overall perspective view of a general reel, and Figure 1
0 and 11 are partial sectional views of other conventional fastening structures. Explanation of symbols, 1... Paper tube, 2, 3... Flange plate, 4... Adhesive, 5... Reinforcement liner, 6, 8
... Fitting groove, 7, 9 ... Press type punch, 6a,
6b, 8a... cut portion.

Claims (1)

[Claim for Utility Model Registration] A ring-shaped fitting groove is formed on the inner surface of each of the left and right flange plates made of cardboard, and the open end edges of both ends of the paper tube are accommodated in the fitting groove. In a terminal winding paper tube reel which is formed by fitting and integrally joining each flange plate to both ends of the paper tube with adhesive interposed between them, the flange plate to which the open end edge of the paper tube is bonded. A single notch is provided by cutting along either the inner circumferential side or the outer circumferential side of the opening edge of the inner liner, and at least a distance equal to the thickness width of the paper tube is provided from this notch. Each fitting groove is formed by compressing and deforming the inner liner on the notch side in an inclined shape toward the flute side using the other inner liner portion as a crease, and the opening end edge of the paper tube is inserted into this fitting groove. 1. A paper tube reel for winding up a terminal, characterized in that when fitting the terminal, the fold side is compressed and corrected at the opening edge to make the inner liner surface in the fitting groove substantially flat.