JPS6130732Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an assembled reel for long coil-wound copper pipes, and more specifically, due to heat treatment of the long coil-wound copper pipes, the inner diameter of the coil-wound copper pipes may be deformed into an oval shape or misaligned. The present invention relates to an assembly reel for a long coil-wound copper tube, in which the outer circumferential surface of a cylindrical body strongly presses the inner circumferential surface of the coil-wound copper tube to fix the copper tube to the reel in a rotationally immovable manner even if such a problem occurs.

Copper pipes, which have been widely used in heating and cooling equipment, have a relatively small diameter and an extremely thin wall thickness of, for example, 0.35 mm, making them difficult to transport, store, and
For convenient handling, it is wound into a coil and stored on a reel.

Such a reel is composed of a pair of side plates and a body sandwiched between these side plates, and the coiled copper tube is fitted into the body tube and protected by the side plates for transportation and storage. The reel is configured to be attached to the uncoiler.

However, in conventional reels of this kind, the diameter of the body cylinder is constant, so if the inner diameter of the coiled copper tube is deformed into an ellipse or the like due to the coil winding process or heat treatment such as annealing of the coiled copper tube, the copper tube will change. A gap is created between the inner circumferential surface of the copper tube and the outer circumferential surface of the cylinder, and when uncoiled by the uncoiler, the copper tube rotates due to misalignment and falls due to its own weight, resulting in inconveniences such as the formation of waves and looping in the copper tube. occurs.

The present invention was devised to solve the above-mentioned inconvenience, and its purpose is to prevent the inner periphery of the coiled copper tube from forming when it is loaded onto a reel, even if the coiled copper tube is deformed into an oval or other shape. To provide an assembled reel for a long coil-wound copper pipe, in which an inconvenient gap is not formed between a surface and an outer circumferential surface of a body, and the body strongly presses the copper tube to hold the copper tube in a rotationally immovable manner on the reel. There is a particular thing.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an assembled reel for a long coil-wound copper tube of the present invention, which is composed of a pair of disc-shaped side plates 2, 2' and a concentric cylindrical body 3.

The side plates 2, 2' are discs made of a suitable material such as synthetic resin, hard cardboard wood, metal, etc.
A protruding circular portion 4 approximately equal in diameter to both upper and lower ends of the body 3 is integrally formed on one side of the center thereof. Tapered surfaces 5, 5' are formed on the outer peripheral edges of the protruding circular parts 4, 4' over the entire circumference.

At the center of the side plates 2, 2', through-holes 6, 6', which are attached to rotational drive shafts of an uncoiler, etc., are bored through the protruding circular parts 4, 4', respectively, and the through-holes 6, 6' and the respective outer peripheral edges of the side plates 2, 2', and are spaced apart from each other at equal intervals in the circumferential direction, and penetrate through the protruding circular parts 4, 4' to provide through holes 7, 7'. are drilled in these through holes 7, 7', with the body 3 held between the side plates 2, 2', and a coil-wound copper tube 8, which is fitted into the body 3 and shown by the dotted chain line in the figure, inserted into the through holes 7, 7'. A band iron 9 is fastened to securely hold it.

As shown in FIG. 3a, the cylindrical body 3 has slit-shaped upper notches 11 and lower notches 12 alternately formed at predetermined intervals on its side walls and having open upper and lower ends. has been done. The cross section of the side wall 10 is curved in a substantially dogleg shape and protrudes outward.

Next, the usage state of the assembled reel for long coil-wound copper pipe of the present invention constructed as described above will be explained.

A coil-wound copper tube that is wound to a predetermined diameter in a tube manufacturing factory has its diameter deformed due to the winding process or heat treatment such as annealing. To fit such a modified coiled copper tube into a reel, first, the disc-shaped side plate 2' is placed horizontally with the protruding circular portion 4' facing upward. Next, the body 3 of the present invention is placed on the surface of the side plate 2' using the upper edge (5a in the figure) of the protruding circular portion 4' as a guide. Thereafter, the coiled copper tube 8 is fitted into the body 3 and placed on the upper surface of the side plate 2'. In this state, a gap is created between the coiled copper tube 8 and the body 3 due to deformation, positional displacement, etc. Next, the other side plate 2 is placed so that its protruding circular portion 4 faces downward and the upper edge (5a in the figure) of the protruding circular portion is in contact with the upper circumferential edge of the body 3. Next, when the side plate 2 is lightly pressed downward, the upper side wall 10 between the adjacent upper notches 11 and the lower side wall 10' between the adjacent lower notches 12 expand radially outward, and the cross section of the side wall 10 expands. The substantially doglegged curved surface deflects outward to form a vertical side wall, which abuts against the inner circumferential surface of the copper tube 8. Next, the fastening band iron 9 is passed between the both side plates 2, 2' through the through holes 7, 7', and the both side plates 2,
A coiled copper tube 8 is fixed between 2'.

In the above embodiment of the present invention, the side wall of the cylindrical body is curved to have a substantially doglegged cross section and is formed to bulge outward; however, the present invention is not limited to this. As shown in Fig. 4b, the vicinity of both the upper and lower edges of the side wall is formed into an arc shape with a small radius of curvature, and the central part is formed into a so-called drum shape with a large radius of curvature. Good too.

As described in detail above, the assembly reel 1 for long coil-wound copper pipes of the present invention has disc-shaped protruding circular parts 4, 4' integrally formed at the center of one side of the side plates 2, 2', and Tapered surfaces 5, 5' are formed on the outer peripheral edges of the protruding circular parts 4, 4', and the side plates 2,
The side wall of the cylindrical body 3 sandwiched between 2' is formed to have an inwardly curved cross section, and the side wall 10
A large number of slit-shaped upper notches 11 and lower notches 12 with open upper and lower ends are alternately formed around the entire circumference to expand the side wall 10 of the body 3 against external force in the radial direction. With this structure, even if a gap occurs between the coil-wound copper tube 8 and the body 3, the side wall 10 of the body 3 can be secured to the upper part and the body 3 due to the wedge action of the tapered surfaces 5, 5' of the side plates 2, 2'. The coiled copper tube 8 is fixed to the reel by strongly pressing the inner circumferential surface of the copper tube 8 at the lower part of the tube. The reel does not fall due to its own weight on the rotation axis of the uncoiler and cause waving, and also does not rotate due to misalignment at the predetermined stopping position of the uncoiler, causing looping or excessive tension, and the reel has strong axial rigidity. Therefore, it has excellent advantages such as the reel not being deformed even if a large number of these reels are stacked and stored.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a long coil-wound copper pipe reel showing an embodiment of the present invention, Fig. 2 is a side cross section of Fig. 1, Fig. 3 is an external view of the body, and Fig. 4a is a Figure 4b shows a side wall sectional view of the fuselage of another embodiment. 1...Assembly reel for long coil-wound copper pipe, 2,
2'...Disc-shaped side plate, 3...Body, 4, 4'...Protruding circular part, 5,5'...Tapered surface, 6,6'...Through hole, 7,7'...Through hole , 8... Coiled copper tube, 9
... Band iron, 10 ... Side wall, 11 ... Upper notch,
12...Lower notch.

Claims (1)

[Scope of utility model registration request] An assembled reel for a long coil-wound copper tube consisting of a pair of disc-shaped side plates and a cylindrical body sandwiched between these side plates, and each side plate has a tapered surface on its outer periphery at the center of one side. The protruding circular parts are formed integrally with each other, and slit-shaped notches with open upper and lower ends are alternately formed on the side wall of the cylindrical body, and the side wall of the cylindrical body has a cross section that is approximately drum-shaped or approximately drum-shaped. An assembly reel for long coil-wound copper pipe characterized by being formed in a dogleg shape.