CN117222584A - Flat-wound coil loading holder, flat-wound coil packing body, and flat-wound coil loading holder backing plate - Google Patents
Flat-wound coil loading holder, flat-wound coil packing body, and flat-wound coil loading holder backing plate Download PDFInfo
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- CN117222584A CN117222584A CN202280029656.9A CN202280029656A CN117222584A CN 117222584 A CN117222584 A CN 117222584A CN 202280029656 A CN202280029656 A CN 202280029656A CN 117222584 A CN117222584 A CN 117222584A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
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- 125000006850 spacer group Chemical group 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- Buffer Packaging (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
Provided is a load holder capable of smoothly performing a flat wound coil (LWC) winding a pipe body from an LWC without failure. The buffer plate 26 on which the LWC24 is placed is constituted by a plate-shaped buffer plate 26 in which a plurality of hollow portions 38 are formed in parallel with each other by the upper side plate 32, the lower side plate 34, and the plurality of ribs 36, and a plurality of concave strips 30 recessed and extending in parallel with each other at a predetermined distance are formed at a predetermined depth on the surface of the upper side plate 32 on which the LWC24 is placed, and the LWC24 is placed on the buffer plate 26 so that the plurality of concave strips 30 cross the lower end portion of the annular shape of the LWC24, respectively, whereby predetermined gaps are formed between the LWC24 and the buffer plate 26 at the plurality of concave strip 30 portions.
Description
Technical Field
The present invention relates to a loading holder for a flat-wound coil (level work coil), a package for a flat-wound coil, and a mat for a flat-wound coil loading holder (bottom board), and more particularly, to an improved structure of a flat-wound coil loading holder for a flat-wound coil, which is used for a heat transfer tube for an air conditioner such as an air conditioner and is formed of a metal tube such as a copper or copper alloy tube, an aluminum or aluminum alloy tube, or the like, supported via a mat, a package for a flat-wound coil obtained by bundling a plurality of such flat-wound coil loading holders, and a new structure of a mat for the flat-wound coil loading holder.
Background
Conventionally, as heat transfer pipes such as smooth pipes and grooved pipes on the inner surface of air conditioning equipment such as air conditioning equipment, copper or copper alloy pipes (hereinafter, collectively referred to as copper pipes) and metal pipes such as pipes made of aluminum or an alloy thereof (hereinafter, collectively referred to as aluminum pipes) have been used as hot water supply pipes, water supply pipes and the like for construction, and these copper pipes, aluminum pipes and the like are generally wound in coil shapes called flat wound coils (LWCs) in their manufacturing processes, and after a predetermined tempering is performed by annealing, they are packed and transported to air conditioning factories and the like, and further, they are unpacked in the air conditioning factories and the like, and then the copper pipes, the aluminum pipes and the like are unwound from the LWCs and the like, so that they can be used for various purposes.
Here, the LWC is formed by, for example, winding a tube body 10 such as a copper tube around a reel (Bobbin) 12 in a line, and stacking the tube bodies in a multi-layer (row) configuration, as shown in fig. 1 (here, a cross section of the tube is shown by a circle for simplicity of illustration, and the same applies hereinafter). More specifically, the spool 12 composed of the detachable inner tube 14 and the side plate 16 is mounted to a predetermined rotating device so that the axial direction thereof is horizontal or vertical, and is rotationally driven, while on the other hand, on the outer peripheral surface of the inner tube 14 of the spool 12, first, a first-layer coil layer having a cylindrical shape is formed by winding a first-layer coil layer in an aligned manner with a position on one end side in the spool axial direction (a position on the left end in fig. 1) as a starting end 10a and an end on the opposite side (in this case, rightward). Then, in the drawing, after the winding of the first layer is completed with the tubular body 10 coming to the right end, the second layer coil layer is wound from the right end to the left end this time, and at this time, the tubular body 10 of the second layer is closely wound on the first layer coil layer so as to be fitted into the concave portion formed between the adjacent tubular bodies 10, 10 in the first layer coil layer, thereby forming the second layer coil layer, and then the tubular body 10 is wound in the opposite direction, thereby forming the third layer coil layer, and the LWC18 is formed by a so-called traverse winding method (traverse winding method) of stacking the plurality of coil layers.
On the other hand, as a method of winding (taking out) the pipe body 10 from the LWC18 as described above, an unwinding method of a coil called a ETS (eye to the sky) system has been proposed in recent years, and has been attracting attention. In this ETS method, the reel 12 is detached from the LWC18, the LWC18 is supported by the backing plate, and then the tube 10 is wound from the inner peripheral side of the LWC18, so that the tube 10 is gradually unwound, but in this ETS method, for example, when the LWC18 obtained in fig. 1 is unwound, the lowermost tube is sandwiched between the backing plate supporting the first coil layer and the tube located directly above the second coil layer when the tube 10 is wound. Then, by the pushing action from the tube body directly above due to the self weight of the coil layer including these tube bodies, the sliding resistance of the lowermost tube body with respect to the pad increases, and the tube body itself is constituted by a copper tube or the like which is soft and has a thin wall thickness, so that there is a problem that a failure such as kink (bending) of the tube body occurs.
Accordingly, in Japanese patent application laid-open No. 2002-370869 (patent document 1) and the like, the following proposals have been made: the number of windings of the coil (tube 10) in each layer (each column) was counted without using the LWC18 shown in fig. 1: as shown in fig. 2, for example, when the number of windings of the coil (10) of the odd-numbered layer is n, the LWC22 wound with the number of windings of the coil (10) of the even-numbered layer being (n-1) is used, and as shown in fig. 3, the tube body 10 is wound in the direction indicated by the arrow with the right side of the LWC22 arranged on the lower side. When these LWCs 22 are used, for example, as shown in fig. 3, after the first layer of coil is wound, the second layer of coil is wound, and the lowermost tube 10b (coil) positioned in the second layer or the third layer has a space of about 1/2 of the tube diameter between the coil and the backing plate 20 positioned below the second layer or the third layer, and therefore, the coil (tube 10 c) positioned above the space is not pressed, and therefore, the coil can be wound without resistance, and therefore, the occurrence of failure such as kink can be satisfactorily eliminated.
However, even in the LWC22 shown in fig. 2, there are the following problems. That is, as shown in fig. 4, in the LWC22, when the tube 10 is wound from the inner coil layer on the inner tube (14) side of the spool to the outer coil layer adjacent thereto, the tube portion 11d of the inner coil layer contacting the side plate 16 is positioned so as to contact the side plate 16 beyond the tube portion 11d of the inner coil layer arranged in the direction perpendicular to the coil axis of the tube portion 11c between the tube portion 11a at the winding end of the inner coil layer and the tube portion 11b of the outer coil layer facing the insertion start end of the recess between the tubes 10, 10. It should be understood that, in fig. 4, a part of the outer coil layer is omitted for easy understanding of the arrangement state of the pipe portion 11d, and the arrangement position of the pipe 10 of each layer over the pipe portion 11d is depicted as being located at the same position in the circumferential direction, unlike the actual position.
Therefore, as is clear from fig. 5 showing the longitudinal section of fig. 4, in all the coil layers from the inside of the LWC22 to the second layer and beyond, the passing pipe body portion 11d is necessarily present at one position in the circumferential direction in one circumference of the pipe body 10. Then, when such LWC22 is supported with the support plate 20 serving as a backing plate in a state where the spool 12 is detached, a space is sometimes not formed between the passing pipe body portion 11d and the support plate 20. Therefore, in the case of unwinding the LWC22 by the ETS method, when the lowermost passing pipe body portion 11d of the coil layer is wound out from the coil layer wound out from the lowermost portion of the pipe body 10, the passing pipe body portion 11d is sandwiched between the support plate 20 supporting it and the pipe body 10 located directly above the passing pipe body portion 11d, and the sliding resistance with respect to the support plate 20 may increase due to the pushing action of the pipe body 10 from directly above. Therefore, as a result, in the LWC22 wound so that there is a space between the lowermost pipe body 10 and the support plate 20, there is also a concern that a failure such as kink (bending) may occur in the pipe body 10 (over the pipe body portion 11 d).
Under such circumstances, japanese patent application laid-open No. 2006-290619 (patent document 2) discloses a loading holder for a flat-wound coil (referred to as a pallet carrier for a flat-wound coil in the publication), in which a recess is provided in a surface of a buffer sheet interposed between the flat-wound coil and a support plate on the flat-wound coil side in order to prevent damage or the like caused by contact between the flat-wound coil and the support plate (pallet), and the above-mentioned passing tube body portion is positioned with respect to the recess. Moreover, the following are pointed out: if the buffer sheet having such a configuration is used, since a space created by the recess is formed immediately below the passing pipe body portion (11 d), resistance due to the pushing action of the pipe body (10) located immediately above the passing pipe body portion (11 d) is reduced at the time of such a winding-out of the passing pipe body portion (11 d), whereby occurrence of a failure such as kink can be prevented.
In this way, when the buffer sheet having the recess is sandwiched between the flat-wound coil and the support plate to form the loading holder of the flat-wound coil, the weight of the flat-wound coil is extremely large, and therefore the tube body forming the flat-wound coil is deflected by its own weight at the portion corresponding to the recess of the buffer sheet, and there is a concern that partial deformation such as bending occurs at the tube body before the flat-wound coil is wound out.
Therefore, japanese patent application laid-open No. 2010-1072 (patent document 3) proposes a loading holder for an LWC, which is configured such that a buffer sheet interposed between the LWC and a support plate has a low friction portion having a small sliding resistance with a pipe body forming the LWC, and includes a base sheet disposed on the support plate and a plurality of flexible protrusions, which are provided on the base sheet at intervals, and are formed of hook-shaped distal ends, that contact the pipe body at contact portions, and the low friction portion is configured such that the pipe body can be wound out from the LWC smoothly without failure.
However, since the low friction portion of the buffer sheet used in such a loading holder has a structure in which a plurality of hook-shaped protrusions are planted on the base sheet, the manufacturing thereof takes labor and time, and there are problems in that the manufacturing cost thereof becomes high, and there are problems in that the operation of removing dust when the dust or the like enters between these plurality of protrusions becomes troublesome and the like, in terms of maintenance.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2002-370869
Patent document 2: japanese patent laid-open No. 2006-290619
Patent document 3: japanese patent application laid-open No. 2010-1072
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a package of LWC including a plurality of LWC loading holders, and a pad including a newly constructed buffer plate used for the LWC loading holders, in which a failure such as kinking can be effectively prevented from occurring when the LWC is wound around a pipe body by an inexpensive structure in the LWC loading holders in which the LWC is mounted on the pad.
Means for solving the problems
In the present invention, in order to solve the above-described problems or problems understood from the description and drawings of the entire specification, various embodiments described below are preferably implemented, but it is needless to say that any combination of the various embodiments described below may be employed. The embodiments and technical features of the present invention are not limited to the following description, and it should be understood that embodiments are conceivable based on the technical ideas disclosed in the entire description and drawings.
In order to solve the above problems, the present invention is a loading holder for an LWC in which an LWC is placed on a flat pallet so that the coil axis direction thereof is perpendicular, the LWC having a structure in which a plurality of coil layers are stacked so that a tube body of one coil layer adjacent to the coil layer is fitted into a recess between tube bodies of the other coil layer, the coil layers being formed by winding a metal tube body in an aligned manner, wherein the pallet includes a plate-shaped buffer plate having a plate-shaped upper side plate on which the LWC is placed, a plate-shaped lower side plate located at a position facing the upper side plate downward at a predetermined distance from the upper side plate, and a plurality of ribs connecting the upper side plate and the lower side plate and extending parallel to each other, the space between the upper side plate and the lower side plate is partitioned by the ribs, a plurality of hollow portions extending in the extending direction of the ribs are formed in parallel with each other, a plurality of concave strips which are recessed and extend in parallel with each other at a predetermined distance are formed on the surface of the upper side plate on which the LWC is placed in the pad plate, the LWC is placed on the buffer plate so that the plurality of concave strips extend across the lower end portion of the annular shape of the LWC, and a predetermined gap is formed between the LWC and the buffer plate at the plurality of concave strip portions.
In a preferred embodiment of the LWC load holding body according to the present invention, the plurality of concave bars are formed on the surface of the upper side plate so as to be parallel to the extending direction of the ribs.
In addition, in the load holding body of the LWC according to the invention, it is advantageous that the plurality of concave strips are respectively formed at joining portions where the ribs are joined with respect to the upper side plate.
Further, according to another preferable aspect of the LWC loading holder of the invention, wherein the rib has at least one curved portion at a middle portion in a height direction thereof, and further, the buffer plate is formed of a plastic material.
Further, according to another preferred aspect of the present invention, the pad has a slip stopper on a lower surface thereof, and an upper portion of the LWC disposed below the pad abuts against the slip stopper. In addition, such a slip stopper is advantageously formed by attaching a slip stopper sheet.
In addition, in the present invention, the gist thereof is also an LWC package in which one or more of the loading holders of LWCs as described above are stacked and at least a LWC portion is baled.
The present invention is also directed to a spacer for a LWC loading holder, comprising a structure in which a plurality of coil layers are stacked so that the tubes of one adjacent coil layer are fitted into the recesses between the tubes of the other adjacent coil layer, wherein the coil layers are formed by winding a metal tube in an aligned manner, wherein the spacer comprises a plate-shaped buffer plate comprising a plate-shaped upper side plate on which the LWC is placed, a plate-shaped lower side plate located at a position facing the upper side plate downward at a predetermined distance from the upper side plate, and a plurality of ribs connecting the upper side plate and the lower side plate and extending parallel to each other, wherein the plurality of hollow portions extending in the extending direction of the plurality of ribs are formed in parallel to each other by the plurality of ribs, wherein the buffer plate comprises a plurality of recesses formed in the upper side plate for placing the LWC thereon, the buffer plate is formed in a plurality of recesses extending parallel to each other at a predetermined distance from the upper side plate, and the recesses are formed in parallel to each other by the respective recesses of the plurality of grooves extending parallel to each other, and the buffer plate is formed in a plurality of grooves extending parallel to each other.
The buffer plate in the backing plate for the LWC load holder as described above is preferably composed of an extrusion molded product of a plastic material.
ADVANTAGEOUS EFFECTS OF INVENTION
In this way, in the LWC loading holder according to the present invention, since the upper plate and the lower plate of the backing plate for loading and supporting the LWC are connected by the plurality of ribs parallel to each other, the plurality of hollow portions are arranged parallel to each other between the plurality of ribs, and the upper plate portion located on the plurality of hollow portions is configured to be easily deflected as compared with the arrangement portion of the plurality of ribs due to the weight of the LWC, and the plurality of concave strips are arranged parallel to each other on the surface of the upper plate on which the LWC is loaded, and the predetermined gaps are formed between the plurality of concave strip portions and the tube body located at the lower end portion of the LWC, for example, when the tube body is wound from the LWC by the ETS, the tube body located at the lowermost portion of the predetermined coil layer can be easily slid and taken out with small sliding resistance due to the existence of the appropriate deflection or gaps of the upper plate portion, and thus, even if the tube body located directly above the upper plate is subjected to the action of the tube body, the tube body located on the upper plate is favorably prevented from being pushed and the tube body from being pushed and causing large sliding resistance.
Further, the buffer plate used as a backing plate or a part thereof in the LWC loading holder according to the present invention is composed of an upper side plate, a lower side plate, and a plurality of ribs connecting them, and has a relatively simple structure of concave bars in which a plurality of depressions are formed on the surface of the upper side plate, which can be manufactured extremely easily by extrusion molding of plastic or the like, and thus has a feature that the manufacturing cost thereof can be reduced advantageously.
Therefore, in the loading holder of the LWC according to the invention as described above, not only can faults such as kinks occurring when the pipe body is wound out from the LWC be effectively prevented, but also partial deformation caused by deflection of the pipe body in its pre-wound state can be advantageously eliminated, regardless of the winding posture of the coil of the LWC. As a result, the entire pipe body can be wound from the LWC with good quality, and the yield of the pipe body can be improved extremely effectively.
Further, by using the LWC loading holder shim plate according to the present invention, the above-described excellent actions and effects can be enjoyed extremely advantageously.
In addition, in the package of the LWC according to the present invention, it is also possible to extremely advantageously enjoy substantially the same excellent actions and effects as can be achieved in the loading holder of the LWC described above.
Drawings
Fig. 1 is a cross-sectional explanatory view showing one winding mode of the LWC formed by the aligned winding of the pipe body.
Fig. 2 is a partial cross-sectional explanatory view showing another different winding manner of the LWC formed by winding the tube body in an aligned manner.
Fig. 3 is a partial cross-sectional explanatory view showing a form when the LWC is unwound and taken out of the pipe.
Fig. 4 is an explanatory diagram showing a part of a side surface of a general LWC.
Fig. 5 is a sectional view A-A of fig. 4.
Fig. 6 is a perspective explanatory view showing an example of the load holder having the LWC constructed according to the invention.
Fig. 7 is a longitudinal sectional explanatory view of the LWC shown in fig. 6.
Fig. 8 is a top view illustrating a buffer plate used in the load-holding body of the LWC shown in fig. 6.
Fig. 9 is a partial explanatory view of the section B-B in fig. 8 and a partially enlarged explanatory view thereof.
Fig. 10 is an explanatory view showing a state in which the pipe body is placed at different positions in the cross-sectional form shown in fig. 9, (a) showing a state in which the pipe body is placed at an upper side plate portion located between ribs in the buffer plate, and (b) showing a state in which the pipe body is placed at an upper side plate portion where ribs are arranged.
Fig. 11 is a cross-sectional explanatory view showing the connection portions of the upper side plate and the lower side plate with the rib in a further enlarged manner.
Fig. 12 is a cross-sectional explanatory view showing an example of a bale body (three-layered state) of the LWC according to the present invention.
Fig. 13 is an explanatory view showing an arrangement form of a slip prevention portion formed on a lower surface of a buffer plate used for a load-holding body of an LWC having a configuration according to the invention, and (a) and (b) show different examples thereof, respectively.
Fig. 14 is a top view corresponding to fig. 8, showing an example of an arrangement pattern of the slip stopper formed on the upper surface of the buffer plate used for the load-holding body of the LWC having the configuration according to the present invention.
Detailed Description
In the following, embodiments of the present invention will be described in detail with reference to the drawings in order to more specifically explain the present invention.
First, in fig. 6, an embodiment of a load-holding body with an LWC constructed according to the invention is shown in its perspective view, and in addition, in fig. 7, schematically in its longitudinal cross-sectional form. As is clear from these drawings, the LWC (flatwise coiled pipe) loading holder of the present embodiment is configured to include the LWC24 and a buffer plate 26 as a pad on which the LWC24 is mounted.
More specifically, the LWC24 has a known structure in which a plurality of coil layers are stacked so that the tube body 10 of one coil layer adjacent to each other is fitted into a recess between the tube bodies 10, 10 of the other coil layer, and the coil layers are formed by winding up the tube bodies 10 of copper tubes, aluminum tubes, or the like in an aligned manner. That is, the LWC24 is formed by winding the pipe body 10 around the spool 12 in a normal winding arrangement by traverse winding as shown in fig. 1, and then detaching the spool 12.
Then, the LWC24 obtained is placed on the buffer plate 26 at the coil axial end face on the opposite side of the winding start end 10a side of the pipe body 10 in a state where the coil axial direction is set to the up-down direction and the winding start end 10a of the pipe body 10 is located at the upper portion, and is supported by the buffer plate 26.
Here, the LWC24 constituting such a LWC load holder is set to the same winding posture as the LWC22 shown in fig. 2. Thus, with the LWC24 supported on the buffer plate 26, a space of about 1/2 of the outer diameter of the tube 10 is formed between the lowermost tube 10 of the even-numbered coil layers from the inside of the LWC24 and the buffer plate 26. Further, between the tube body portion 11a at the winding end of the coil layer of the odd-numbered row starting from the inside of the LWC24 and the tube body portion 11b at the insertion start end of the concave portion between the tube bodies 10, 10 of the odd-numbered row, which is a part of the tube body 10 of the coil layer positioned adjacently to the outside of the coil layer, the tube body portion 11d passing over the tube body portion 11c of the coil layer of the odd-numbered row arranged in the direction perpendicular to the coil axis is positioned so as to be in contact with the buffer plate 26 in order to pass over the tube body portion 11c of the coil layer of the odd-numbered row in contact with the buffer plate 26 (see fig. 4).
In the LWC loading holder of the present embodiment, the buffer plate 26 on which the LWC24 is placed has a structure as shown in fig. 8 or 9. That is, as is clear from the plan view of fig. 8, the buffer plate 26 is entirely constituted by a circular plate-like plate member having a circular flat plate shape having an outer diameter larger than the outer diameter of the LWC24 by a predetermined dimension, and a circular center hole 28 is provided in the center thereof. A plurality of concave strips 30 recessed and extending parallel to each other at a predetermined distance are formed at a predetermined depth on the upper surface of the buffer plate 26 on which the LWC24 is placed. In fig. 6 and 8, the plurality of concave bars 30 are schematically shown by a single solid line.
More specifically, as is clear from the plan view shown in fig. 8 or the sectional shape shown in fig. 9, the cushion plate 26 as a cushion plate is configured in such a manner that it includes a plate-shaped upper side plate 32, a plate-shaped lower side plate 34 located at a position facing the upper side plate 32 downward at a predetermined distance, and a plurality of ribs 36 connecting the upper side plate 32 and the lower side plate 34 and extending parallel to each other, spaces between the upper side plate 32 and the lower side plate 34 are partitioned by the plurality of ribs 36, a plurality of hollow portions 38 extending in the extending direction of the plurality of ribs 36 are formed parallel to each other, and a plurality of concave strips 30 recessed parallel to each other at a predetermined distance and extending on the surface (upper surface) of the upper side plate 32 of the cushion plate 26 on which the LWC24 is placed are formed at positions where the upper side plate 32 and the lower side plate 34 are connected by the ribs 36. In the rib 36, bending portions 36a and 36b slightly bent in a v-shape in the opposite direction are formed at two positions at the middle part in the standing direction, respectively, and when a load is applied to the bending portions 36a and 36b, the rib 36 is bent, and the upper side plate 32 to which the rib 36 is connected is easily deflected.
In addition, the buffer plate 26 having the cross-sectional shape as described above is advantageously constructed of a plastic material, and can be easily manufactured by, for example, an extrusion molding operation using a prescribed plastic (resin) material, and therefore, the manufacturing cost of such a buffer plate 26 can be effectively reduced. Here, as a plastic material that is advantageously used, a polyolefin material such as polypropylene is advantageously used in order to improve sliding of the tube body 10 constituting the LWC24 on the surface of the buffer plate 26.
In particular, the configuration employed in the present embodiment in which the concave strips 30, 30 are formed at the connection portions of the rib 36 with respect to the upper and lower side plates 32, 34, respectively, is advantageously achieved by an extrusion molding operation of a plastic material. That is, at the time of extrusion molding of the plastic material, the extrusion molding operation is performed so that the molding shrinkage of the plastic material is sufficiently generated at the joint portions of the upper and lower side plates 32, 34 and the ribs 36 to form the concave portions of the prescribed depth of the depressions on the plate surfaces, whereby the intended concave strips 30 can be efficiently formed on the surfaces of the respective plates 32, 34 in the extending direction thereof along the ribs 36. Of course, these concave strips can also be formed by a usual extrusion molding operation using a die for forming such concave strips, in which case the concave strips 30 can be formed at any position of the upper/lower side plates 32, 34.
When the LWC24 is placed on the buffer plate 26 having the surface shape shown in fig. 8 or fig. 9 such that the coil axis direction thereof is perpendicular as shown in fig. 6 or fig. 7, a plurality of concave strips 30 parallel to each other on the surface (upper surface) of the buffer plate 26 are positioned so as to intersect the lower end portion of the annular shape of the LWC 24. Therefore, by forming predetermined gaps between the LWC24 and the buffer plate 26 at the plurality of concave portions 30, the contact area between the LWC24 and the buffer plate 26 can be effectively reduced, and the upper plate 32 located between the ribs 36, in other words, the portion located on the hollow portion 38 is more likely to flex than the arrangement position of the rib 36, so that moderate flexing is caused by the weight of the pipe 10 in the LWC 24.
Therefore, in the case where the tube 10 of each coil layer is wound out of the LWC24 mounted on the buffer plate 26 in the ETS manner as described above, for example, when the tube 10 of the coil layer located at the lowermost portion on the buffer plate 26 is pulled along the surface of the buffer plate 26 so as to move in the lateral direction, the tube 10 can be pulled out (wound out) on the contact portion of the surface of the buffer plate 26 with a relatively small force with a small sliding resistance.
Therefore, even if the tube 10 located at the lowermost portion of the coil layer disposed on the buffer plate 26 receives a pressing action from the tube 10 located directly above it due to the load of the weight of the coil layer, the pulling-out of the tube 10 can be achieved with a relatively small force, and therefore, the occurrence of a failure such as kink due to a large sliding resistance with the buffer plate 26 can be advantageously avoided or reduced. Further, in the buffer plate 26, unlike the related art, in order to alleviate the pushing action on the tube 10 located at the lowermost portion of the coil layer from the tube 10 located directly above it, any large recesses or the like are not provided, and the plurality of concave strips 30 parallel to each other are respectively provided so as to respectively traverse the lower end portions of the annular shape of the LWC24, so that there is no case where the tube 10 is deflected and partially bent due to the presence of such large recesses.
Specifically, when the LWC24 is placed on the buffer plate 26, the lowermost tube 10 of each coil layer of the LWC24 contacts the surface of the buffer plate 26 in the form shown in fig. 10 (a) or (b), and in either case, the bending or clearance is effectively generated due to the porous structure of the buffer plate 26 and the presence of the concave bars 30, and the lowermost tube 10 is easily wound out.
That is, in the LWC24 contact structure shown in fig. 10a, the upper side plate 32 of the buffer plate 26 located between the two ribs 36, 36 is in contact with the upper side plate 32, and in this case, the upper side plate 32 is moderately deflected by the weight of the coil layer stacked on the pipe 10, and the contact pipe 10 is positioned in a circular plan view at the lower end of the LWC24, and therefore, as is apparent from the configuration shown in fig. 6, the plurality of concave strips 30 cross, and therefore, a plurality of gaps are formed between the pipe 10 and the upper side plate 32 of the buffer plate 26, and therefore, the winding-out resistance of the pipe 10 can be effectively reduced, and the winding-out of the lower end pipe 10 in the lateral direction (horizontal direction) can be easily performed.
In addition, the contact form shown in fig. 10 (b) shows a state in which the lowermost tube body 10 in the LWC24 is supported by being positioned on the concave strip 30 formed on the upper side plate 32 of the buffer plate 26, and when the weight of the coil layer formed thereon is received inside the tube body 10 including the lowermost portion, as shown in the drawing, the upper side plate 32 is deflected, and the concave strip 30 is provided to be positioned on the joint portion of the rib 36, and therefore the rib 36 is deflected due to the presence of the bending portions 36a, 36b thereof, but the gap formed between the upper side plate 32 and the lowermost tube body 10 of the LWC24 by the concave strip 30 still exists, and the upper side plate 32 portion positioned on the hollow portion 38 can be deflected more than the joint portion of the rib 36, and therefore, the pulling out of the lowermost tube body 10 in the lateral direction can be achieved with a relatively small force without causing a large sliding resistance, and thus occurrence of failures such as kinks can be effectively suppressed or prevented.
In the buffer plate 26 on which the LWC24 is placed as described above, the height between the upper side plate 32 and the lower side plate 34 becomes the thickness: h. spacing between ribs 36, 36: p is p 1 Thickness of each of the upper side plate 32, the lower side plate 34, and the rib 36: t is t 1 、t 2 、t 3 Depth of the concave strip 30: a or width: w, spacing between concave bars 30, 30: p is p 2 (refer to fig. 11) and the like are appropriately determined according to the size of the LWC24, the outer diameter of the pipe body 10 constituting the LWC, and the like.
For example, the outer diameter of the pipe body 10 in the LWC24 made of copper pipe, aluminum pipe, or the like, which is used as a hot water supply pipe, a water supply pipe, or the like for a building, is generally set to about 4 to 10mm as a heat transfer pipe such as a smooth pipe or an inner surface grooved pipe in an air conditioning apparatus such as an air conditioner, and therefore, the height between the upper side plate 32 and the lower side plate 34 in the buffer plate 26 is set to be: h is generally about 1 to 20mm, preferably about 3 to 10mm, and the interval between the ribs 36, 36 is set to be: p is p 1 Generally, about 1 to 20mm, preferably about 2 to 15mm, is used, and the thickness of each of the upper side plate 32, the lower side plate 34, and the rib 36 is as follows: t is t 1 、t 2 、t 3 Generally, the size is about 2mm or less, preferably about 0.1 to 1.0 mm.
In addition, regarding the concave strip 30 formed on the upper side plate 32 or the lower side plate 34 in the buffer plate 26, the size thereof is appropriately determined according to the outer diameter of the tube body 10, etc., for example, the depth of the concave strip 30 is as follows in the reference shown in fig. 11: a is generally about 3 to 200. Mu.m, preferably about 5 to 100. Mu.m, and the width is: w is generally about 0.1 to 4.0mm, preferably about 0.2 to 2.0mm, and the pitch between the concave bars 30, 30 is set to be: p is p 2 Generally, about 1 to 20mm is adopted,preferably, the diameter is about 2 to 15 mm. By employing depths within such a range: a. width: w and spacing: p is p 2 The object of the present invention can be advantageously achieved, and the cushion plate 26 can be used as a practical cushion plate or a part of the cushion plate.
In the above embodiment, the cushion plate is constituted by only the cushion plate 26, and the LWC24 is placed on the cushion plate 26 to constitute the intended laminate holder of the LWC24, and a cushion plate structure may be employed in which a support plate having a predetermined thickness is disposed below the cushion plate 26 for the purpose of reinforcement or the like, and the cushion plate (26) and the support plate are fixed and integrated by an adhesive or the like.
As described above, the load holder shown in fig. 6, which is obtained by placing the LWC24 on the buffer plate 26, is at least partially packed with a resin film or the like as in the conventional case; or the winding posture of the coil is fixed by using a metal or resin tape, and the LWC24 and the buffer plate 26 are further fastened by an appropriate tape to be packed, so that the LWC24 is packed, and then shipped, transported and stored. Further, such a package is unpacked by a user of an air conditioning factory or the like as a transport destination, and then the LWC24 is unwound and the tube 10 is taken out as described above and supplied to a target application.
The package body may be configured not only in a form in which one LWC24 is mounted on the buffer plate 26 constituting the mat, but also in a form in which a plurality of LWCs 24 are stacked, and in this case, in a form of the loading holder shown in fig. 6 or 7, two, three or more layers are stacked.
Fig. 12 shows a configuration in which three LWCs 24 are stacked, and in this case, in a configuration in which each LWC24 is supported on a buffer plate 26 as a backing plate, the buffer plate 26 of the upper loading holder is directly stacked on the lower LWC 24. Here, in order to convey such a three-layered LWC24, a conveyance tray 50 is disposed so as to be positioned below a loading holder for supporting the lowest LWC 24. In such a three-layer laminated structure, the same package as in the prior art is applied to form a package body, and the package body can be transported to a desired position. It should be noted that the tray 50 can be used advantageously when one LWC24 is placed and transported, in addition to the case where a plurality of LWCs 24 are stacked.
In addition, in the case of stacking a plurality of LWCs 24 as described above, by providing the cushion plate composed of the cushion plate 26 with the slip stopper on the lower surface thereof and bringing the upper portion of the LWC24 disposed below the cushion plate (cushion plate) 26 into contact with the slip stopper, the possibility of causing collapse due to sliding of the LWC24 during conveyance can be advantageously eliminated. In this way, by providing the slip stopper on the lower surface of the buffer plate 26 (pad plate) to prevent collapse when the lower LWC24 is conveyed, on the other hand, the pipe body 10 of the LWC24 placed thereon can be smoothly wound out on the upper surface of the buffer plate 26, and the occurrence of problems such as kinking can be advantageously avoided, so that the stacked conveyance of a plurality of LWCs 24 can be practically and advantageously realized.
Fig. 13 shows a different example of such a pattern of the slip stopper, and in fig. 13 (a), a circular ring-shaped slip stopper 60 is formed so as to be in contact with the entire upper surface of the LWC24 located at the lower layer, which is circular ring-shaped. In fig. 13 (b), four belt-shaped slip stopper portions 60 having a predetermined width are provided radially with a phase difference of 90 ° on the lower surface of the buffer plate 26 as a pad plate, and can exert a slip stopper effect at 4 positions on the upper surface of the LWC 24.
The slip stopper 60 provided on the lower surface of the pad (the buffer plate 26) can be easily formed by using a known slip stopper that has been conventionally commercially available as a slip stopper or a slip-resistant sheet, and attaching the slip stopper to the pad with an adhesive or the like. Such a slip-resistant sheet has a structure in which a slip-resistant layer made of an ethylene- α -olefin copolymer or the like is formed on one surface or both surfaces of a synthetic resin cloth, and a slip-resistant sheet commercially available under the trade name pyola (Pi Aolan) or the like is advantageously used.
As described above, the slip stopper 60 may be disposed not only on the lower surface of the cushion plate 26, but also on the upper surface of the cushion plate 26, as far as the object of the present invention can be achieved, and an example thereof is shown in fig. 14. Here, as in the case of fig. 13 (b), the four belt-shaped slip prevention portions 60 are each disposed with a phase difference of 90 °, and therefore, movement (slip) during conveyance of the LWC24 mounted on the upper surface of the buffer plate 26 can be advantageously suppressed or prevented. Here, as shown in the drawing, such a slip stopper 60 is provided so as to be located only at a part of the outer peripheral side in the radial direction of the LWC24, and is not located over the entire length of the radius of the LWC 24.
While the present invention has been described in detail with reference to the exemplary embodiments thereof, it is to be understood that the invention is not limited thereto, and that the invention is not limited thereto.
For example, in the illustrated embodiment, the buffer plate 26 is formed in a circular outer shape, but is not limited to this circular shape, and is formed in a polygonal shape such as a rectangle, a pentagon, a hexagon, an octagon, or the like without any hindrance.
In the illustrated embodiment, the concave strips 30 formed on the surface of the upper side plate 32 of the buffer plate 26 are formed so as to be located at the connection portions of the ribs 36 that connect the upper side plate 32 and the lower side plate 34, but even if they are provided at the portions of the upper side plate 32 located between the adjacent ribs 36, there is no interference, and the pitch between the concave strips 30, 30 is as follows: p is p 2 Even at a distance from adjacent ribs 36, 36: p is p 1 The arrangement of the concave strips 30 at different pitches does not interfere with each other. Of course, it is sufficient that the concave strip 30 is formed only on the surface of the upper side plate 32, and is not required to be formed on the surface of the lower side plate 34. However, it is practically effective to form the concave strip 30 on the surface of the lower side plate 34 together with the upper side plate 32 in advance as illustrated in terms of freely selecting and using both surfaces of the buffer plate 26.
Further, as exemplified in the shape of the rib 36, the provision of the bent portions 36a and 36b at the intermediate portions in the height direction thereof is effective in that the bending deformation can be easily caused when the weight of the pipe body 10 acts, but even if the rib shape is a straight shape only in the vertical direction without providing such bent portions 36a and 36b, there is no hindrance, and in the present invention, a structure in which ribs inclined in mutually different directions are alternately arranged to connect the upper side plate 32 and the lower side plate 34 in a trapezoidal shape can be adopted.
In addition, although the embodiment illustrated shows a manner in which the tube 10 is unwound from the coil layer on the inner peripheral side of the LWC24, there is no obstacle even if the tube 10 is unwound from the coil layer on the outer peripheral side of the LWC 24.
Although not shown, the present invention can be implemented by adding various modifications, corrections, improvements, and the like to the present invention according to the knowledge of those skilled in the art, and these embodiments are included in the scope of the present invention as long as they do not depart from the technical spirit of the present invention.
Description of the reference numerals
10 pipe body, 11d cross pipe body part, 12 winding reel, 14 inner cylinder, 16 side plate, 20 supporting plate, 18, 22, 24 flat winding coil pipe (LWC), 26 buffer plate, 28 centre hole, 30 concave strip, 32 upper side plate, 34 lower side plate, 36 rib, 36a, 36b bending part, 38 hollow part, 50 tray, 60 limited slip part.
Claims (10)
1. A loading holder for a flat wound coil, which is formed by placing a flat wound coil on a flat backing plate so that the coil axis direction thereof is perpendicular, the flat wound coil having a structure in which a plurality of coil layers are stacked so that the tube bodies of one coil layer adjacent to each other are fitted into the concave portions between the tube bodies of the other coil layer, the coil layers being formed by winding metal tube bodies in an aligned manner,
the pad includes a plate-shaped buffer plate including a plate-shaped upper plate on which the flatwise coil is placed, a plate-shaped lower plate located opposite to the upper plate at a predetermined distance downward from the upper plate, and a plurality of ribs connecting the upper plate and the lower plate and extending parallel to each other, spaces between the upper plate and the lower plate are partitioned by the plurality of ribs, a plurality of hollow portions extending in an extending direction of the plurality of ribs are formed parallel to each other,
in the pad, a plurality of concave strips are formed on the surface of the upper side plate on which the flat-wound coil is placed, the concave strips are recessed and extend in parallel with each other at a predetermined distance, the flat-wound coil is placed on the buffer plate so that the concave strips are parallel to each other and cross the lower end of the circular shape of the flat-wound coil, and predetermined gaps are formed between the flat-wound coil and the buffer plate at the concave strip positions.
2. The load-holding body of a flat wound coil according to claim 1, wherein,
the plurality of concave strips are formed on the surface of the upper side plate in parallel with respect to the extending direction of the ribs, respectively.
3. The load-holding body of a flat wound coil according to claim 1 or 2, characterized in that,
the plurality of concave strips are respectively formed at the connection parts of the ribs relative to the upper side plate.
4. A load-holding body for a flat-wound coil according to any one of claims 1 to 3,
the rib has at least one curved portion at its middle portion in the height direction.
5. The loading retainer of a flat wound coil according to any one of claims 1 to 4,
the buffer plate is made of plastic materials.
6. The load-holding body of a flat-wound coil according to any one of claims 1 to 5, wherein,
the backing plate has a slip-stop portion on its lower surface, and the upper portion of the flat-wound coil disposed below the backing plate is in contact with the slip-stop portion.
7. The load-holding body of a flat wound coil according to claim 6, wherein,
the slip-stop portion is formed by attaching a slip-stop sheet.
8. A package of flatwise coiled tubing, characterized in that it is formed by stacking one or more load holders of flatwise coiled tubing according to any of claims 1 to 7, and that at least the flatwise coiled tubing sections are baled.
9. A backing plate for a flatwise coil loading holder, which is a backing plate for a flatwise coil loading holder in which a flatwise coil is placed so that the coil axis direction thereof is perpendicular, the flatwise coil having a structure in which a plurality of coil layers are stacked so that the tubular bodies of adjacent coil layers are fitted into the concave portions between the tubular bodies of the other coil layer, the coil layers being formed by winding metal tubular bodies in an array,
the pad includes a plate-shaped buffer plate including a plate-shaped upper plate on which the flatwise coil is placed, a plate-shaped lower plate located opposite to the upper plate at a predetermined distance downward from the upper plate, and a plurality of ribs connecting the upper plate and the lower plate and extending parallel to each other, spaces between the upper plate and the lower plate are partitioned by the plurality of ribs, a plurality of hollow portions extending in an extending direction of the plurality of ribs are formed parallel to each other,
in the pad, a plurality of concave strips are formed on the surface of the upper side plate on which the flat-wound coil is placed, the concave strips are recessed and extend in parallel with each other at a predetermined distance, and the flat-wound coil is placed on the buffer plate so that the concave strips are parallel to each other and cross the lower end portion of the circular shape of the flat-wound coil, whereby predetermined gaps are formed between the flat-wound coil and the buffer plate at the concave strip portions.
10. The pallet for a flatwise coil load holder of claim 9, wherein,
the buffer plate is an extrusion molding product of plastic materials.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-073032 | 2021-04-23 | ||
| JP2021073032 | 2021-04-23 | ||
| PCT/JP2022/018446 WO2022225021A1 (en) | 2021-04-23 | 2022-04-21 | Level wound coil loading holder, package for level wound coil, and bottom board for level wound coil loading holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117222584A true CN117222584A (en) | 2023-12-12 |
Family
ID=83598286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280029656.9A Pending CN117222584A (en) | 2021-04-23 | 2022-04-21 | Flat-wound coil loading holder, flat-wound coil packing body, and flat-wound coil loading holder backing plate |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7152830B1 (en) |
| CN (1) | CN117222584A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007145538A (en) * | 2005-11-29 | 2007-06-14 | Sumitomo Light Metal Ind Ltd | Level wound coil loading holder, and level wound coil unwinding method |
| JP5155240B2 (en) * | 2008-05-21 | 2013-03-06 | 株式会社住軽伸銅 | Level-wound coil stacking holder, level-wound coil package, and buffer sheet for level-wound coil stacking holder |
| JP5342308B2 (en) * | 2009-04-03 | 2013-11-13 | 古河電気工業株式会社 | Buffer body and level-wound coil mounting method |
| JP5653961B2 (en) * | 2012-05-14 | 2015-01-14 | 古河電気工業株式会社 | Packing material and metal tubular body supply method |
-
2022
- 2022-04-21 CN CN202280029656.9A patent/CN117222584A/en active Pending
- 2022-04-21 JP JP2022546444A patent/JP7152830B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2022225021A1 (en) | 2022-10-27 |
| JP7152830B1 (en) | 2022-10-13 |
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