JPH0441162Y2 - - Google Patents

Description

[Detailed explanation of the idea]

INDUSTRIAL APPLICATION FIELD This invention relates to a metal coil heat treatment support used when heat treating a metal coil such as aluminum, and a heat treatment apparatus using the support. Conventional technology Conventionally, when heat treating a metal coil such as aluminum, the coil is oriented sideways, that is, its axial direction is horizontal, and the coil is suspended by supporting both ends of the take-up spool. was going there. However, in this method, as shown by the dashed line in FIG. 6, the upper part of the coil 100 sinks due to its own weight during heat treatment and becomes smaller in diameter, while the lower part of the coil bulges downward and becomes larger in diameter. The roundness of the coil is likely to be significantly impaired.
In order to solve this problem, the applicant proposed a jig to prevent coil deformation during heat treatment.
62-148558). This jig, as shown in Figure 7,
During the heat treatment, the horizontally oriented metal coil 100 was suspended with its lower side peripheral surface supported, and this certainly suppressed deformation of the upper and lower parts due to the metal coil's own weight. Problem to be Solved by the Invention However, when the deformation prevention jig 200 described above is used, as shown in FIG.
In No. 1, bulging deformation 103 occurred in the coil surface layer. Furthermore, during the heat treatment, due to the difference in thermal expansion coefficient between the support member 201 and the coil 100,
A slip occurs between the support member 201 and the coil 100, and the friction force at this time tightens the coil surface layer, causing buckling deformation 104 in the longitudinal direction of the coil.
This also causes the problem that this deformation remains even after heat shrinkage. In FIG. 7, 202 is a support rod attached to both ends of the support member, and 203 is a heat treatment frame on which the support rod is placed and supported. If such a bulging deformation 103 or buckling deformation 104 occurs in the surface layer, if the coil is fed to the next process, such as cutting, printing, or pasting with film or paper, the unwinding of the coil will still occur. At times, tension fluctuations occurred, and wrinkles and breaks were likely to occur. This idea was made to solve this problem, and it prevents not only deformation due to the metal coil's own weight during heat treatment, but also bulge deformation and buckling deformation of the surface layer, and improves the quality of the coil. It is an object of the present invention to provide a support for heat treatment of metal coils that can maintain roundness, and also to provide a heat treatment apparatus using this support. Means for Solving the Problems In order to achieve the above object, the support according to this invention has flexibility that can be deformed into an arc shape along the outer periphery of the metal coil 100, and heat treatment. A belt-shaped support member 2 having heat resistance and strength capable of supporting a horizontally oriented metal coil with its lower peripheral surface supported; a heat-resistant cushion material 3 disposed inside the support member; It is characterized by comprising a thin metal plate 4 disposed in a loose state inside the cushion material 3. Furthermore, the metal coil heat treatment apparatus according to the present invention includes the metal coil heat treatment support 1 described above.
are arranged in parallel with their adjacent edges connected to each other, and the outer edge of the outermost support is fixed to the heat treatment frame 10, and the outer edge of the outermost support is fixed to the heat treatment frame 10, and A pair of intermediate support pipes 6, 6 arranged below are horizontally suspended on the heat treatment frame 10 in a rollable state, and in this state, both ends of the take-up spool 102 can be rolled on the heat treatment frame 10. A plurality of horizontally suspended metal coils 100 are attached to the support 1
A weight 20 is attached to the support 1 between the intermediate support pipes 6 and 6 of each set.
It is characterized in that it is placed. Function By supporting the sideways metal coil 100 with its lower circumferential surface supported by the support member 2 during heat treatment, the cushion material 3 and the thin metal plate 4 are supported.
A force acts in a direction to maintain the circular shape of the coil through the coil, thereby preventing deformation of the upper and lower portions of the coil due to the coil's own weight. Further, due to the presence of the cushion material 3, the force applied to the contact edge 101 between the support member 2 and the coil is absorbed and dispersed, and the swelling deformation of the coil surface layer at the edge is also eliminated. Further, when the metal coil 100 expands during heat treatment, the loosely disposed thin metal plate 4 causes frictional force mainly between the thin metal plate and the cushion material, causing unreasonable force on the circumferential surface of the coil. Since stress is not generated, buckling of the metal coil surface layer is prevented from occurring. On the other hand, in the heat treatment apparatus according to the present invention using the support 1 described above, each support 1 is
A certain weight is applied to the circumferential surface of the metal coil 100 supported by the support member 2 through the tension of the support member 2 . When heated in this state, the metal coil 100 attempts to thermally expand and the coil attempts to rotate in the direction of arrow A in FIG. In response to this force, the intermediate support pipes 6, 6 roll, and due to the presence of the thin metal plate 4, the coil rotates effortlessly and smoothly, changing the relative position of the support member and the metal coil. Therefore, a constant load by the weight 20 is stably applied to the peripheral surface of the metal coil 100 before and after thermal expansion, and no unreasonable stress is generated between the support member 2 and the coil 100. On the other hand, when the coil contracts after heat treatment, the coil 100 tries to rotate in the direction of arrow B in FIG. The coil 100 rotates smoothly and no undue stress is generated between the coil 100 and the support member 2. Since the load applied to the coil circumferential surface can be kept constant through the heat treatment process, the cushion material 3
Combined with this effect, deformation of the metal coil is further prevented. Embodiment Next, the configuration of this invention will be explained with reference to the drawings. In FIGS. 1 to 4, reference numerals 1 and 1 are two supports provided side by side, and these supports are attached to a band-shaped support member 2 and a free space on the inside of each support member, that is, on the surface that supports the metal coil 100. The cushioning material 3 has a cushion material 3 disposed in the same state, and a thin metal plate 4 disposed further inside the cushion material 3. The support member 2 has a width equal to that of the metal coil 100.
The width is set to be the same as or slightly larger than the width of the supporting members 2, and the adjacent edges of both supporting members are connected and integrated, so that the supporting members 2, 2 are constituted by one long strip-shaped member. This support member 2 supports the lower circumferential surface of the horizontal metal coil 100 during heat treatment, and is therefore formed to have flexibility so that it can be deformed into an arc shape along the outer periphery of the metal coil. . It is also necessary to have sufficient heat resistance against heat treatment temperatures and sufficient strength to support the circumferential surface of the coil. The support member 2 having such flexibility, heat resistance, and strength may preferably be made of glass cloth containing SUS wires. However, the present invention is not limited thereto, and materials and structures can be selected as appropriate in consideration of the heat treatment temperature of the applied metal coil, the tension applied to the support member, and the like. Note that the heat treatment temperature for the metal coil is generally about 200°C or higher. The cushion material 3 prevents direct contact between the metal coil 100 and the support member 2, especially when the cushion material 3 is not present.
It is interposed in order to absorb and disperse the pressure applied to the coil from the support member 2 at the contact edge 101 and to prevent the coil surface layer from rising and deforming at the edge. For this reason, the length of the cushion material 3 is set to be longer than the length of the outer peripheral contact portion between the support member 2 and the coil 100, and its width is set to be approximately the same as that of the support member 2. The cushion material 3 is also made of a heat-resistant material that can withstand the heat treatment temperature. The metal thin plate 4 is interposed to prevent the frictional force acting between the metal coil 100 and the cushion material 3 during thermal expansion and heat absorption, and to prevent buckling deformation of the coil surface layer. be. For this purpose, the metal thin plate 4 is disposed in a free state and not in a fixed relationship with the cushion material 3 so as to be able to cope with the thermal expansion and contraction of the coil. Further, the thin metal plate 4 is preferably made of the same material as the metal coil 100 in order to expand and contract at the same rate as the thermal expansion and contraction rate of the coil and to prevent damage to the coil surface. For example, in the case of an aluminum coil, it is preferable to use a thin aluminum plate with a thickness of about 0.15 mm. The width of the thin metal plate 4 is set to be the same as the cushion material 3, and therefore the same or slightly larger than the coil width, and the length is set to be slightly longer than the cushion material. As can be seen from FIG. 1, two intermediate support pipes 6, 6 each having a circular cross section are in a transverse state and are connected to the support members below in the vicinity of the connecting portion 5 of the support members 2, 2 in the two supports. It is placed in a free state. These intermediate support pipes 6, 6 are placed on the heat treatment frame 10 during heat treatment together with end support pipes 7, 7 each having a circular cross section attached to both ends of the support member. And between each end support pipe 7, 7 and intermediate support pipe 6, each support 1,
1 supports each metal coil 100, and a cylindrical weight 20 is placed on the support 1 between the two intermediate support pipes 6, 6. The weight 20 applies tension to the support member 2 to support the lower side peripheral surface of the metal coil 100,
It is used to apply a constant pressing force to the circumferential surface of the coil, and its weight is changed depending on the width, size, weight, etc. of the coil. In the case of an aluminum coil, a weight of about 100 to 300 kg can be suitably used. The heat treatment frame 10 has a flat part 11 on which the end support pipes 7, 7 are horizontally suspended at the upper opposing part, and a flat part 12 on which the take-up spool 102 of the metal coil 100 is placed on the middle opposing part. ing. With the above configuration, a method of using the support and heat treatment apparatus according to this embodiment will be explained. First, both ends of each take-up spool 102 of the metal coils 100, 100 are horizontally suspended on the intermediate flat portion 12 of the heat treatment frame 10 so as to be able to roll within a predetermined range. Subsequently, the end support pipes 7, 7 of the supports 1, 1 are horizontally suspended immovably at a predetermined position on the upper flat part 11 of the heat treatment frame 10, and the supporting members 1, 1 are connected and integrated. 2,2 each coil 100,10
A heat-resistant cushion material 3 and a thin metal plate 4 are sequentially arranged between each supporting member 2 and the metal coil 100, 100. Next, two intermediate support pipes 6, 6 are passed under the vicinity of the continuous part 5 of the support member 2, and then these pipes are passed through the upper flat part 1 of the heat treatment frame 10.
1, horizontally suspended so that it can roll. Subsequently, when a weight 20 is placed on the support member 2 between the intermediate support pipes 6, 6, the support member 2 on the circumferential surface of the coil is pulled.
A pressing force is applied to the circumferential surface of the coil. At this time, the presence of the cushion material 3 makes it possible to absorb and disperse the stress that occurs on the coil circumferential surface, especially on the contact edge 101 between the coil 100 circumferential surface and the support member 2 in the absence of the cushion material. Can prevent swelling deformation. When heating for heat treatment is performed in this state, each metal coil 100, 100 will expand due to its expansion action.
Although the intermediate support pipes 6, 6 try to rotate in the direction of the arrow A in FIG.
6 rolls, the metal coils 100, 100 rotate, and the relative position between the support member 2 and the metal coil 100 changes. At this time, due to the interposition of the metal thin plate 4, no large frictional force acts between the metal coil 100 and the metal thin plate 4, so that the metal coil rotates smoothly without generating undue stress. In this way, the load of the weight 20 is applied to the peripheral surface of the metal coil via the support member 2 with a constant pressing force. Moreover, even if the circumferential surface of the coil is pushed due to thermal expansion, the thin metal plate 4 and the coil 1
Since no large frictional force is generated between the coil surface layer and the coil surface layer, buckling deformation does not occur in the coil surface layer. On the other hand, when the coils are thermally contracted, the metal coils 100, 100 try to rotate in the direction of arrow B in FIG. 3, but as above, the intermediate support pipes 6, 6 roll in the opposite direction and the metal coils smoothly Rotate. In this way, the movement of the metal coil 100 is not hindered during the heat treatment process, a stable pressing force is applied to the circumferential surface of the coil, and unwanted deformation of the coil surface layer is prevented. In the above embodiment, two supports 1,
1 is used, however, it is also possible to use three or more supports in the same manner as above and perform the heat treatment. FIG. 5 shows another embodiment of the support according to this invention. In this embodiment, the heat treatment is performed while the metal coil 100 is held in a completely suspended state by spanning support pipes 7', 7' provided at both ends of a single support member 2' over the heat treatment frame 10'. being done. In this case as well, the action of the cushion material 3' prevents the coil surface layer from rising and deforming, and the coil also thermally expands or contracts smoothly through the thin metal plate 4', thereby preventing buckling deformation of the coil surface layer. be done. Effects of the invention As explained above, the metal coil support according to the invention can eliminate the concentrated load applied to a part of the metal coil surface layer during heat treatment, and can apply uniform and stable pressure to the coil circumference. Since pressure can be applied, it is possible to effectively prevent uneven deformation of the upper and lower parts of the coil during heat treatment, as well as bulge deformation and buckling deformation of the coil surface layer, making it possible to obtain a heat-treated coil with excellent roundness. . On the other hand, in the heat treatment apparatus according to the present invention, in addition to the above, the coil is supported by its circumferential surface during heat treatment and is configured to be able to rotate freely, so that no unreasonable force is applied to the coil circumferential surface. , it is possible to maintain even more stable roundness. Therefore, even when the heat-treated coil thus obtained is rewound in the next process such as cutting or printing, it is possible to avoid wrinkles, breakage, etc. due to tension fluctuations. By the way, the outer diameter of aluminum foil with a thickness of 7 μm is 80 mm.
Two types of aluminum foil coils were made by winding them around two steel pipes with a length of 24,000 m and 30,000 m, respectively, and were heat-treated using the heat treatment equipment shown in Figures 1 to 4 to examine the deformation state of the coils. investigated. The supporting member is made of glass cloth with SUS wires of 0.1 mm in diameter, the cushion material is a heat-resistant material with a thickness of 10 mm, and the thin metal plate is made of a glass cloth with a diameter of 0.1 mm.
A 0.15 mm aluminum thin plate was used, the weight of the weight was 200 kg, and the heat treatment conditions were 400°C x 65 hours. The amount of deformation of the upper and lower parts of the coil after heat treatment was examined, and the results were as shown in Table 1 below. Moreover, no swelling deformation or buckling deformation was observed in the coil surface layer. On the other hand, the same aluminum coil as above was heat-treated under the same conditions by the conventional method of suspending it on a take-up spool without using a deformation prevention device, and the amount of deformation was also examined. The results are also shown in Table 1 below.

【table】

[Table] From the above results, it was confirmed that by using the deformation prevention device according to the present invention, it was possible to prevent not only uneven deformation of the upper and lower parts of the coil, but also bulging deformation and buckling deformation of the surface layer. It should be noted that the amount of deformation of the coil that does not cause wrinkles due to tension fluctuations during unwinding is 2 mm or less, and it can be seen that the present device satisfies this condition.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of this invention, in which Figure 1 is a perspective view showing the support and heat treatment equipment partially separated, Figure 2 is a perspective view of the device in use, FIG. 3 is a front view of FIG. 2, FIG. 4 is a cross-sectional view taken along the line -- in FIG. 3, FIG. 5 is a perspective view of another embodiment of the support in use, and FIG. FIG. 7 is a front view of the metal coil for explaining the problem, and FIG. 7 is a front view showing the state in which the conventional support is used. 1, 1'... Supporting tool, 2, 2'... Supporting member,
3,3'...Cushion material, 4,4'...Metal thin plate, 6...Intermediate support pipe, 10,10'...Heat treatment frame, 20...Weight, 100...Metal coil, 102'...Winding Take spool.

Claims (1)

[Claims for Utility Model Registration] (1) The metal coil 100 has flexibility that can be deformed into an arc shape along the outer periphery, and can support a sideways metal coil while supporting its lower side circumferential surface during heat treatment. A belt-shaped support member 2 having high heat resistance and strength, a heat-resistant cushion material 3 disposed inside the support member, and a thin metal plate 4 disposed loosely inside the cushion material. A support for heat treatment of metal coils. (2) A plurality of supports 1 for heat treatment of metal coils according to claim 1 are arranged in parallel with their adjacent edges connected to each other, and the outer edge of the outermost support is heat treated. A pair of intermediate support pipes 6, 6, which are fixed to the frame 10 and further arranged below near the connecting part of the adjacent support, are horizontally suspended on the heat treatment frame in a rollable state. A take-up spool 102 A plurality of metal coils 100 are horizontally suspended at both ends of the heat treatment frame so as to be able to roll.
is supported with the lower side circumferential surface of the coil supported by the support 1, and
A metal coil heat treatment apparatus characterized in that a weight 20 is placed on a support between each set of intermediate support pipes 6, 6.