JP2007126178A - Level wound coil package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a level wound coil package capable of reducing an unwinding work cost and improving its productivity without reducing the quality of a supplied bobbin at the time of unwinding work for level wound coils of multistage stacked-up level wound coil package. <P>SOLUTION: A level wound coil package is provided in which at least a first stage of a level wound coil wound in a cylindrical manner around a bobbin stacked up on a bottom plate. This level wound coil package keeps at least first stage level wound coils stacked up through a shock-absorbing member and their adjoining level wound coils set so that bobbin ends of outermost peripheries or the bobbin ends of the innermost peripheries are connected by a connecting member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is used for heat transfer pipes (such as internally grooved pipes and smooth pipes) of air conditioning refrigerators such as air conditioners, hot water supply / water supply pipes for buildings, etc., and copper or copper alloy pipes are multilayered in a coil shape. It is related with the level-wound-coil package body comprised by the level-wound coil arrange | positioned so that the axial direction may become perpendicular | vertical, and it may be unwound.

  A level-wound coil (hereinafter referred to as LWC) is usually provided as a multi-stage LWC package in which a plurality of LWCs are arranged so that their axial directions are vertical as shown in FIG. Is done. In FIG. 11, 10 is a multi-tiered LWC package, 11 is an LWC, 8 is a plate material (such as donut paper serving as a buffer material) that partitions the multi-tiered LWC, and 12 is a guide for guiding the pipe 2 when unwinding the LWC, Reference numeral 13 denotes a pallet on which LWC is loaded.

  When unwinding the LWC of a multi-stage LWC package, the tube end of the LWC in the upper stage is taken out and the LWC is unwound. When the unwinding of the upper LWC is completed, the tube end of the next-stage LWC located below and adjacent to the upper row is taken out and the unwinding work is performed. Because it is not connected, every time the LWC is unwound, the work must be stopped and the tube end of the LWC must be set in a guide or a processing machine, and improvement is required from the viewpoint of workability. It was.

  Therefore, in Patent Document 1, when the upper LWC is unwound and the end of the pipe rises or is about to rise, the supply of the pipe is stopped, and the cushioning material between the LWC of the next stage The weight of the guide jig is attached to the end of the unwinding start tube of the next-stage LWC, and the action of this weight causes the end of the unwinding end pipe of the upper stage and the unwinding start pipe end of the next-stage LWC to A method has been proposed in which the supply of the pipe is resumed after being connected by the connecting device.

  In addition, as shown in Patent Document 2, the unwinding end pipe end of the upper LWC and the unwinding start pipe end of the next LWC are connected with a connecting member in advance, An LWC that continuously unwinds by providing a spacer having a thickness that allows the connecting member to pass therethrough between the upper LWC and the lower LWC positioned below the upper LWC. Laminates have been proposed.

JP 2004-231348 A JP 2004-142854 A

However, in the pipe supply method from the LWC package according to Patent Document 1 described above, the pipe supply is temporarily stopped each time the LWC is switched, and the pipe ends of the upper LWC and the next stage LWC are connected using the connecting device. After that, the supply of the pipe is resumed, but when the connection part of the pipe end reaches the introduction part of the processing machine or the pipe feeding device, the supply of the pipe is stopped again and the connection part Need to be removed.
That is, every time the LWC is unwound by one coil, the tube supply is stopped twice, and the operation of connecting the tube and removing the connected portion is required each time, so that productivity can be improved. difficult. In addition, the progress of the connection must be monitored until the connection site is removed from the connection of the pipe, which greatly affects workability.

  In the LWC laminate shown in Patent Document 2, first, a spacer having a thickness that allows the connection member to pass between the LWCs must be provided, which increases the number of component parts of the LWC laminate, and the work is troublesome. And increase costs. Secondly, in the case of an LWC wound with a soft tube such as a soft copper tube, the upper LWC weighs, causing a depression or deformation along the shape of the spacer on the upper surface of the next LWC. As a result, there arises a problem of making the pipe defective. Thirdly, the connection of the pipe end portion is performed by connecting the unwinding start pipe end portion in the inner peripheral portion and the unwinding end pipe end portion in the outer peripheral portion with a connecting member. Inevitably, it becomes long and the handling becomes inconvenient and the workability is lowered.

  In view of such a situation, the present invention has been made, and provides a level wound coil package that reduces manufacturing costs and improves productivity without adding extra components such as spacers.

  The invention according to claim 1 is a level-wound coil package in which at least one level-wound coil obtained by winding a tube in a cylindrical shape is laminated on a bottom plate, and the at least one level-wound coil is a cushioning material. The level-wound coils that are stacked through and adjacent to each other are the level-wound coil packages in which the tube ends of the outermost layers or the tube ends of the innermost layers are connected by a connecting member. is there.

  The invention according to claim 2 is the level-wound coil package according to claim 1, wherein the connecting member is a tube made of a hardly water-permeable resin.

The level-wound coil package according to the present invention connects the adjacent coils of the laminated level-wound coils at the tube ends between the inner peripheries or the tube ends between the outer peripheries without increasing the number of components. Further, the length of the connecting member can be shortened, which greatly contributes to the reduction of the manufacturing cost.
Furthermore, the pipe supply during the LWC unwinding operation can be stopped only when the connecting member is removed, and a plurality of LWCs can be continuously supplied, which greatly improves the productivity.

The present invention will be specifically described below with reference to the drawings.
FIGS. 1A and 1B are an external view and a vertical cross-sectional view for explaining an example of an external appearance and a vertical cross section of a three-stage stacked LWC package before connecting the pipe ends of the level wound coil. 1 is an LWC package, 2 is a pipe constituting the LWC, 3 is a cushioning material, 4 is a pallet (bottom plate), 2a is a pipe end on the outer peripheral part, and 2b is a pipe end on the inner peripheral part. .
FIGS. 2 to 5 illustrate an embodiment of LWC pipe end connection of a three-stage LWC package according to the present invention, (a) is an external view, and (b) is a longitudinal sectional view thereof. Yes. Reference numeral 5 denotes a connection member that connects the tube ends of the LWC.

Here, the connecting member 5 to be used is a soft copper pipe or aluminum pipe, and the LWC pipe ends can be connected to each other by butt welding or insertion welding.
In addition, heat-shrinkable tubes such as polyvinyl chloride resin tubes, polyolefin resin tubes, fluororesin tubes, polyethylene resin tubes with a smaller inner diameter than the outer diameter of the tube, polypropylene resin tubes, polyvinyl chloride resin tubes, polystyrene resin tubes, etc. A soft resin tube is also used. Furthermore, in order to prevent moisture permeation from the connecting member and prevent deterioration of the quality of the tube, it is preferable to use a hardly water-permeable resin tube.

2 and 3, each LWC is laminated with the tube end on the outer peripheral portion on the lower side, here the pallet 4 side.
In FIG. 2, with the connecting member 5, LWC0 and LWC1 are connected at the outer peripheral pipe end 2a, LWC1 and LWC2 are connected at the inner peripheral pipe end 2b, and the unwinding start pipe end is set as the outer peripheral pipe end 2a of LWC2. Yes.
FIG. 3 shows a state where LWC0 and LWC1 are connected by the inner peripheral pipe end 2b, and LWC1 and LWC2 are connected by the outer peripheral pipe end 2a, and the unwinding start pipe end is the inner peripheral pipe end 2b. It has become.

4 and 5 show an example in which LWCs are stacked so that the length of the connection member 5 is made shorter.
In FIG. 4, the outer peripheral pipe end 2a of LWC0 is arranged so as to be adjacent to LWC1, the outer peripheral pipe end 2a of LWC0 and LWC1 is connected by the connecting member 5, and LWC2 is arranged on the LWC1 with the same pipe end arrangement as LWC0. The inner peripheral pipe ends 2b are connected to each other, and the lengths of these connecting members 5 can be made shorter than those shown in FIGS.
In FIG. 5, the LWC1 is placed upside down from the arrangement of the pipe ends in FIG. 2 or FIG. 3 and stacked on the LWC0. The connection between the LWC0 and the LWC1 is made between the inner peripheral pipe ends 2b. The connection between LWC1 and LWC2 is made at the outer peripheral pipe end 2a.

Although the above description has been given by taking a three-stage stacked LWC package as an example, even in the case of n-stage stacking, connection can be made in the same manner.
First, as shown in FIG. 6, the level wound coil with the outer peripheral tube end provided on the lower side is LWCd _i , the level wound coil with the outer peripheral tube end provided on the upper side is LWCCu _i , and the n-stacked LWC The tube end connection state of the package will be described with reference to FIGS.

7 to 10 are longitudinal sectional views showing a stacked state and a tube end connection state of an n-stage stacked LWC package.
_{7, LWCd 0 / LWCd 1 / LWCd} 2 / ··· / LWCd n intended order of stacking, 2 is a LWC packaging body equal to three stacks LWC package of FIG.
In this stacking method, there are two ways of connecting the pipe ends, the lowermost LWCd ₀ and the LWCd ₁ provided on the upper stage are connected by the outer pipe end 2a, and the LWCd ₁ and the LWCd ₂ provided on the upper stage are connected. It used to connect the inner peripheral portion tube end 2b, and thereafter, repeats the manner of connection, as it should be connected to LWCd _n, corresponding to FIG.

8 connects the LWCd ₁ provided in the upper and LWCd ₀ lowermost inner circumferential portion tube end 2b, connecting the LWCd ₂ provided in the upper LWCd ₁ and said LWCd ₁ at the outer peripheral portion tube end 2a but, thereafter, it repeats the manner of connection, as it should be connected to LWCd _n, corresponding to FIG. 3.

FIG. 9 shows the stacking order of LWCu ₀ / LWCd ₁ / LWCu ₂ / LWCd ₃ /... / LWCu _i-1 / LWCd _i / LWCu _{i + 1} /... Becomes a level-wound coil. The way of stacking corresponds to the three-tier LWC package shown in FIG.
In this case, the pipe ends of the level wound coils stacked adjacent to each other are such that the inner peripheral pipe ends and the outer peripheral pipe ends are adjacent to each other and can be connected by a short connecting member. .

FIG. 10 shows the stacking order of LWCd ₀ / LWCu ₁ / LWCd ₂ / LWCd ₃ / LWCd ₄ /... / LWCd _i−1 / LWCCu _i / LWCd _{i + 1} /. It becomes either level wound coil of LWCu. The way of stacking corresponds to the three-tier LWC package shown in FIG.
Also in this case, as in the previous FIG. 9, the pipe ends of the level wound coils stacked adjacent to each other are the inner peripheral pipe ends and the outer peripheral pipe ends adjacent to each other, and are connected by a short connecting member. Will be able to.

  As described above with reference to FIGS. 2 to 10, the level-wound coil package according to the present invention connects the inner peripheral pipe ends and the outer peripheral pipe ends of the level-wound coils to be laminated with connecting members. As a result, the level-wound coils can be joined together without adding special parts such as spacers used in Patent Document 2.

(A), (b) is the external view of the 3 step | paragraphed LWC package before connecting a pipe end, and its longitudinal cross-sectional view. (A), (b) is the external view and its longitudinal cross-sectional view which show an example of the Example of the pipe end connection of the three-tiered LWC package which concerns on this invention. (A), (b) is the external view and its longitudinal cross-sectional view which show an example of the Example of the pipe end connection of the three-tiered LWC package which concerns on this invention. (A), (b) is the external view and its longitudinal cross-sectional view which show an example of the Example of the pipe end connection of the three-tiered LWC package which concerns on this invention. (A), (b) is the external view and its longitudinal cross-sectional view which show an example of the Example of the pipe end connection of the three-tiered LWC package which concerns on this invention. It is a longitudinal cross-sectional view of LWC explaining the loading direction of LWC. It is a longitudinal cross-sectional view which shows the lamination | stacking state and pipe end connection state of a LWC package body of n steps stacking. It is a longitudinal cross-sectional view which shows the lamination | stacking state and pipe end connection state of a LWC package body of n steps stacking. It is a longitudinal cross-sectional view which shows the lamination | stacking state and pipe end connection state of a LWC package body of n steps stacking. It is a longitudinal cross-sectional view which shows the lamination | stacking state and pipe end connection state of a LWC package body of n steps stacking. It is perspective explanatory drawing which shows the external appearance of the conventional LWC and a LWC package.

Explanation of symbols

1 Level Wound Coil Package 2 Tube 2a Outer Peripheral Tube End 2b Inner Perimeter Tube End 3 Buffer Material 4 Pallet 5 Connection Member 8 Buffer Material 10 Level Wound Coil Package 11 Level Wound Coil 12 Guide 13 Pallet

Claims (2)

A level-wound coil package in which at least one level-wound coil in which a tube is wound in a cylindrical shape is laminated on a bottom plate,
The at least one level-wound coil is laminated via a cushioning material, and the adjacent level-wound coils are connected at their outermost pipe ends or innermost pipe ends with a connecting member. A level-wound coil package characterized in that The level-wound coil package according to claim 1, wherein the connecting member is a tube made of a material having poor water permeability.

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