JPS641329Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an assembly reel for a long coil-wound copper pipe.

[Prior art] For example, copper pipes for circulating refrigerant used in air-conditioning equipment have a relatively small diameter of around 10 mm, but are shipped wound into coils to be supplied to users. . This coiled copper tube (hereinafter referred to as a coil-wound copper tube) is fitted onto a prefabricated reel and supplied. The reason for this is that when the copper pipe is used up, the empty reel cannot be disposed of from an economical point of view and is used many times, so it is difficult to disassemble and reassemble it for convenience in transportation and storage. This is because unless the reel is made into a freely assembleable type, the space occupied by the reel will be large, resulting in extremely uneconomical results.

[Problems to be solved by the invention] By the way, coil-wound copper pipes made by winding copper pipes, for example, several hundred meters, are subject to deformation of the inner diameter of the coil-wound copper pipes due to reasons such as annealing after winding. This results in the individual inner diameters becoming elliptical or the inner diameters of the coiled copper tubes being different.

On the other hand, if the diameter of the barrel of the reel into which coiled copper tubes with different inner diameters are fitted is constant and matched to the coiled copper tube with the smallest inner diameter, then this barrel When a coil-wound copper tube is fitted into a cylinder and installed in an uncoiler, and fed intermittently by a fixed length, the coil-wound copper tube is not aligned with the rotation axis of the uncoiler due to the gap between the body tube and the coil-wound copper tube. Since the copper tube is pulled by the feeder, a large tension is applied to the copper tube, and the copper tube may be cut or its diameter may change.

Further, when the inner diameter of the coiled copper tube is deformed, the gap created between the body tube and the coiled copper tube is unevenly distributed on one side. Therefore, as the coil-wound copper tube rotates, if this gap exists upward, the coil-wound copper tube is extremely heavy, so the coil-wound copper tube will fall by the gap and be pulled out. A waving phenomenon occurs in the copper pipe, resulting in the copper pipe itself waving or becoming loose.

In addition, when the copper tube becomes loose, this loosening is transmitted to the coiled copper tube in turn, causing the coiled copper tube to become loose, and part of the copper tube gets wedged between the side plate of the reel and the coiled copper tube. It becomes stuck and cannot be pulled out, resulting in cutting or deformation of the stretched copper pipe.

Furthermore, when the copper tube is wound in line with the copper tube, there will always be a point where the upper layer copper tube intersects and overcomes the lower layer copper tube, and this portion bulges outward, causing eccentricity of the coil-wound copper tube as a whole. occurs, the weight is uneven,
If there is a gap between the coiled copper tube and the copper cylinder when it rotates, intermittent slips will occur in the coiled copper tube.
This can result in excessive tension being applied to the copper pipes, causing them to loosen or become deformed.

The present invention was made to eliminate the above-mentioned drawbacks of the conventional technology, and there is no gap between the coiled copper tube and the reel body tube even if the inner diameter of the coiled copper tube is different. An object of the present invention is to provide an assembly reel for a long coil-wound copper pipe configured to prevent the wound copper pipe from slipping or falling.

[Means for solving the problem] In the present invention, in order to achieve the above object, both open end edges are overlapped with each other,
A cylindrical body whose peripheral surface is formed in a wave shape in the circumferential direction, a structure in which the side wall of the cylindrical body can be displaced in the circumferential direction, and a coil-wound copper tube is fitted into the body tube. We adopted a structure in which the body tube is always pressed against the inner circumferential surface of the center hole of the coiled copper tube in the closed state.

[Example] Hereinafter, details of the present invention will be explained based on an example shown in the drawings.

FIGS. 1 and 2 illustrate the entire assembled reel according to the present invention, and this assembled reel 1 is composed of a pair of left and right side plates 2 and 3, and a barrel 4 disposed between them. There is.

The pair of side plates 2 and 3 have a predetermined diameter, for example,
It has a diameter of about 1000 mm and is molded from plywood or synthetic resin, and center holes 2a and 3a are formed in the center of each side plate 2 and 3 to be attached to the rotating shaft of the uncoiler, etc. . A protrusion 5 is formed on the inner surface of each side plate 2, 3, and a tapered surface 5 is formed on the outer peripheral surface of the protrusion 5.
a is formed. The diameter of the circle inscribed with the base end of this tapered surface 5a corresponds to the maximum inner diameter of the coil material 6 including the thickness of the body tube 4, and the diameter of the circle inscribed with the upper end edge of the tapered surface 5a is also the same as the diameter of the circle inscribed with the upper end of the tapered surface 5a. This corresponds to the minimum value of the inner diameter of the coil material 6 including the thickness of the coil material 6.

When the reel 1 having such a structure is used, the coil material 6 is attached as follows.

First, one side plate 2 is placed in a horizontal state, and the barrel tube 4 is placed on the side plate 2 using the outer peripheral edge of the protruding portion 5 as a guide for positioning. In this state, the coiled copper tube 6
is fitted to the outside of the barrel tube 4. Next, the other side plate 3
is placed on the barrel tube 4 in a horizontal state so that the tapered surface 5a of the protruding portion 5 fits inside the barrel tube 4, and the wedge action of the tapered surface 5a moves the barrel tube 4 toward the side with a larger diameter. Attach by pushing it apart. After this, the pair of side plates 2 and 3 are firmly connected by a fastening band 7 made of a steel belt or the like through the through holes 2b and 3b formed at positions corresponding to the inside of the body tube 4 of each side plate 2 and 3. Link. Due to the fastening force of the both side plates, the barrel tube 4 is pushed out in the direction of increasing its diameter by sliding between its upper and lower edges and the tapered surface 5a, and the barrel tube 4 is securely attached to the inner circumferential surface of the coiled copper tube 6. Pressed by As a result, errors in the inner diameter of the coiled copper tube 6, deformations such as elliptical shape, etc. are absorbed, and there is no misalignment between the body tube 4 and the coil material 6.

The coiled copper tube is shipped in this state, but during bundling, the disk-shaped side plates 2 and 3 can be used to roll and move the coiled copper tube, and the coiled copper tube can be moved using an uncoiler or the like. Since there is no gap between the barrel tube 4 and the coiled copper tube 6 when feeding the coiled copper tube one by one, the above-mentioned inconvenience in handling the copper tube does not occur. After using all the wound copper tubes, the fastening band 7 is removed, the left and right side plates 2 and 3 and the body tube 4 are disassembled, and the side plates 2 and 3 are stacked on top of each other, and the body tube 4 is removed. If they are located separately, the space in which they are accommodated is significantly reduced in size, allowing a large number of reels to be accommodated in a small space, which is extremely advantageous for transportation and storage.

By the way, in order to fully exhibit the above-mentioned effects, it is a prerequisite that the barrel tube 4 can be elastically deformed in the radial direction. However, if the barrel tube 4 is cylindrical, it cannot be expanded, so the above-mentioned effects cannot be achieved. Therefore, in this invention, the third
The structure shown in the figure below was adopted.

FIG. 3 explains the first embodiment of the present invention, in which the barrel tube 4 has its overlapping edge 4.
A and 4b are overlapped over a predetermined length, and a waveform 4c is formed at a predetermined pitch over the entire surface. The material for forming the body tube 4 can be freely selected depending on the purpose, such as metal or synthetic resin, but it should have enough elasticity to maintain a certain diameter in its natural state and return to its original shape when expanded. Something is desirable.

If the body tube 4 having such a structure is attached through the side plates 2 and 3 as shown in FIG. Variations in the inner diameter of the copper tube 6 are also absorbed by the elastic deformation of the waveform 4c, and when the diameter is expanded in the direction of increasing the diameter due to the wedge action of the tapered surface 5a of the protrusion 5, it is absorbed by the elastic deformation of the waveform 4c. At the same time, the deformation not absorbed by the waveform 4c can be absorbed by the displacement in the circumferential direction of the overlapping portion of the overlapping edges 4a, 4b. Therefore, the body tube 4 reliably comes into close contact with the inner circumferential surface of the center hole of the coil-wound copper tube 6 having different internal diameters, and the body tube 4 and the coil-wound copper tube 6
It has the excellent effect of not shifting the edges.
The cylinder with this structure has significantly high axial rigidity.

FIG. 4 shows a second embodiment of the present invention.
In this embodiment, the waveform 4c has a shape with a long pitch in the circumferential direction, so that the waveform 4c can be sufficiently elastically deformed. Even if such a structure is adopted, the same effects as those of the above-mentioned embodiment can be expected. It is preferable to overlap the sheets as shown in FIGS. 3 and 4 because the phenomenon of turning up the edges is less likely to occur and the problem of changes in the thickness of the overlapping portions is also eliminated.

FIG. 5 shows a third embodiment of the present invention.
In this embodiment, the barrel cylinder 4 is formed with a waveform 4c.
A spring 8 is stretched between the overlapping edges 4a and 4b. That is, near the end of the overlapping edge 4b located on the inside, pins 9 are provided projecting at a predetermined distance above and below the inside, and the overlapping edge 4a located on the outside
A pin 10 is protruded at a position facing the pin 9 on the inner side thereof, and a spring 8 is stretched between the two. A pin 10 is provided on the overlapping edge 4b side.
A notch 11 is formed over a predetermined length to face the.

If such a structure is adopted, even if the body cylinder 4 is formed using a highly elastic steel strip that tends to straighten, the predetermined length determined by the length of the spring 8 and the tensile force The diameter of the coiled copper tube can be maintained at all times, and it can be firmly attached to the peripheral wall of the center hole of the coiled copper tube.

By the way, in each of the above-mentioned embodiments, the barrel tube 4
Since the overlapping edges 4a and 4b of the overlapping edges 4a and 4b are simply overlapped, there is a risk of misalignment, but to prevent this, as shown in FIG. A guide 12 having an L-shaped cross section facing inward may be provided to form a buckle shape. Of course, the guide 12 may form an insertion opening continuously as shown in FIGS. 7, 8, and 9a and 9b. Further, as shown in FIG. 6, a bent portion 13 may be provided at the end of the inserted side to prevent it from coming off.

In any of the above cases, the barrel can be made of a single or composite material such as metal, synthetic resin, or paper, and in this case, the material and structure must have high elasticity in the radial direction and high rigidity in the axial direction. It is preferable.

[Effects of the invention] As is clear from the above explanation, according to the invention, the reel barrel has a configuration in which overlapping edges overlap each other and the circumferential surface is formed in a wave shape in the circumferential direction. Therefore, when fitting a coil-wound copper tube, it is possible to fit it with a small body diameter, and when the coil-wound copper tube is fitted, the variation in the inner diameter of the coil-wound copper tube is due to the elastic deformation of the wave shape of the body tube and the overlapping part of the edges. This can be absorbed by the displacement in the circumferential direction, and because it is configured to be in close contact with the inner circumferential wall of the center hole of the coiled copper tube, a gap may occur between the body tube and the coiled copper tube. This is an excellent method that allows the uncoiler to reliably send out the coiled copper tube in fixed size portions without causing any slippage, deformation, or damage to the coiled copper tube as in conventional methods. Effects can be obtained. Further, according to the present invention, there is no problem of turning up or changes in plate thickness at the overlapping portion of the end edges of the body tube.

In the case of a side plate with a diameter of about 1 m, the weight of the coil is 100 kg or more per reel.However, during transportation and storage, many reels are stacked with the side plate horizontally, so the weight of the coil in the axial direction of the barrel is large. Strength is becoming increasingly required, and the present invention is characterized by having strength and rigidity that meet this demand.

[Brief explanation of the drawing]

1 and 2 are side views and longitudinal front views of the relay, FIGS. 3 to 8 are perspective views showing different embodiments of the present invention, and FIGS. 9a and 9b are structure of the guide 12. FIG. 1... Reel, 2, 3... Side plate, 2a, 3a...
...Center hole, 2b, 3b...Through hole, 4...Body tube, 5
...Protruding portion, 5a...Tapered surface, 6...Coil-wound copper tube.

Claims (1)

[Scope of utility model registration request] A body cylinder having a maximum diameter slightly smaller than the diameter of the center hole of the coil material with the edges overlapped each other at a predetermined distance, and a peripheral surface formed in a wave shape in the circumferential direction; A pair of disc-shaped side plates are fitted to both ends of the tube, and a center portion of one side of the side plates is provided with a body tube for expanding the diameter and pressing it against the inner circumferential surface of the center hole of the coil-wound copper tube. 1. An assembly reel for a long coil-wound copper pipe, characterized in that a protrusion having a tapered surface on its outer periphery is provided.