JP4256508B2 - Winding and storage type strip member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wind-up and storage-type band plate tubular member, a manufacturing method thereof, a method of winding and storing the strip-plate tubular member, and an electric wire coating apparatus using the wind-up and storage-type band plate tubular member.
[0002]
[Prior art]
Conventionally, a metal tape measure (SK steel or the like) is well known as an example of the development of a retractable band. This is because the belt plate is attached with a bending ridge in the plate width direction, and the wound portion is flat in the plate width direction, but once unwound (unwinding), it is C by the bending ridge in the plate width direction. It has a feature that the unrolled portion is straight and does not hang down.
[0003]
This metal tape measure is manufactured by a method as shown in FIG. 8, for example.
First, a strip (strip) 100 is cold-rolled cold by a four-stage reverse rolling mill 101 and rolled into a thin plate 100A having a plate thickness of about 0.2 mm and a plate width of about 300 mm. Next, the thin plate 100A is slit to a predetermined width (for example, 10 to 15 mm) in the longitudinal direction by the cutter 102. Next, the slit thin plate 100A is preformed into a C-shaped shape with a convex roll 103 and a concave roll 104. Next, the thin plate 100A is subjected to heat treatment such as quenching and tempering while the convex shape 105 and the concave shape 106 hold the C-shaped shape, and the C-shaped shape is frozen. Thereafter, the metal tape measure having the above-described characteristics is completed by winding the thin plate 100A into a mainspring shape.
[0004]
On the other hand, a conduit method is well known as a means for covering an electric wire. This is a method in which an electric resistance welded pipe welded at a joint is previously piped at a predetermined position at a predetermined length, and then an electric wire is passed through the pipe.
[0005]
[Problems to be solved by the invention]
In the conventional metal tape measure (winding and storing type band plate) as described above, since the C sled is a shallow bend, the bending rigidity is insufficient. However, it has the disadvantage of bending (dripping) and not straightening, and it can be used for anything other than the tape measure, such as a tool that extends to a high place that is out of reach, such as the ceiling, or a pointing stick during a presentation. could not.
[0006]
On the other hand, in the conventional conduit method as described above, there is a problem that it is difficult to pass the wire through the electric resistance tube due to the “weakness of the waist (in other words, lack of rigidity)”. It was practically impossible to pass an electric wire from below into a vertically welded ERW pipe. For this reason, a method is adopted in which a piano wire is passed in advance in the electric sewing tube, and an electric wire is connected to the end of the piano wire and drawn into the tube, but this is cumbersome because it increases the number of parts and work steps. There was a drawback. In addition, when the ERW pipe is long, there are difficulties in storage and transportation. In addition, the electric resistance welded tube welded at the joint has a drawback that it cannot be checked or repaired where the wire breaks even if the electric wire breaks in the middle of the tube.
[0007]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a retractable and retractable strip plate tubular member that can be stored in a compact and highly versatile manner, a method for manufacturing the same, and a retractable and retractable method of the strip plate tubular member. An object of the present invention is to provide an electric wire covering apparatus having excellent properties.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the take-up and storage-type band plate tubular member according to the present invention is preliminarily formed so as to be deformed into a tubular shape once the band plate wound in a flat state in the plate width direction is unwound. A warp in the width direction is provided.
[0009]
In addition, the method for manufacturing a roll-and-hold type band plate tubular member according to the present invention includes a preforming step of bending a plate-shaped band plate stepwise in the plate width direction to form a tubular shape, and the preformed shape. A heat treatment step having a heating furnace for heating the strip in a state of holding the steel to remove internal strain and freezing the tube shape, a quenching zone for quenching and hardening the heated tube strip, and this heat treatment And a winding step of winding and storing the tube-shaped band plate in a flat state in the plate width direction.
[0010]
In addition, the method for winding and storing the strip plate tubular member according to the present invention winds and stores the strip plate tubular member deformed into a tubular shape by a previously given warp in the plate width direction in a flat state in the plate width direction. It is characterized by doing.
[0011]
The wire coating apparatus according to the present invention includes a bobbin around which an electric wire is wound and a reel in which the strip is wound in a flat state in the plate width direction, and the strip is unwound from the reel. In this case, the strip is deformed into a tubular shape by a warp in the plate width direction provided in advance, and is extended while accommodating and covering the electric wire unwound from the bobbin.
[0012]
In addition, a guide member is provided for positioning and guiding the unwound electric wire on the strip immediately before being unwound and deformed into a tubular shape.
[0013]
Further, the present invention is characterized in that a cutter is provided that can cut the unrolled strip before it is deformed into a tubular shape.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a winding-and-storing belt-plate tubular member according to the present invention, a method for manufacturing the same, a winding-and-storing method for a strip-plate tubular member, and an electric wire coating apparatus using the winding-and-storing belt-plate tubular member This will be described in detail with reference to the drawings.
[0015]
[Example]
1 is a side view of an electric wire coating apparatus showing an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is also a structural explanatory view of a bobbin portion, FIG. 4 is a structural explanatory view of a guide roll portion, FIG. Is an explanatory diagram of a reel, FIG. 6 is an explanatory diagram of a bobbin, and FIG. 7 is a manufacturing process diagram of a strip plate pipe.
[0016]
As shown in FIGS. 1 and 2, in a case 2 fixed on the gantry 1, a reel 4 in which a strip plate pipe 3 is wound in a flat state in the plate width direction is rotatably supported. Is done. In FIG. 2, reference numeral 5 denotes a handle for rotating (retracting) the pipe 3 by rotating the reel 4. As shown in FIG. 5, the reel 4 has an outer diameter in which a pipe 3 made of, for example, SK steel (carbon tool steel) (which may be made of stainless steel) having a width of 50 mm, a thickness of 0.3 mm, and a total length of 100 m is wound and stored. It is 250 mm and weighs about 12.3 kg.
[0017]
On the case 2, a bobbin 8 around which an electric wire, an optical fiber cable or the like (hereinafter simply referred to as “electric wire”) 7 is wound is rotatably supported via a pair of left and right support brackets 6 a and 6 b. As shown in FIG. 6, the bobbin 8 has an outer diameter of 360 mm and a weight of about 14.1 kg, which is an electric wire 7 such as a cabtyre cable having a diameter of 10 mm and a winding length of 100 m.
[0018]
A cutter 9 capable of cutting the pipe 3 unwound from the unwinding port 2a is attached above the unwinding port 2a on the front surface of the case 2, and on the gantry 1 located in front of the cutter 9, As a guide member for positioning and guiding the electric wire 7 unwound from the bobbin 8 on the pipe 3 just before it is unwound from the reel 4 and deformed into a pipe shape having a substantially circular cross section (may be a shape other than a circle). A pair of upper and lower guide rolls 10a and 10b are disposed.
[0019]
As shown in FIG. 3, the cutter 9 has a cutter blade 13 fixed to a handle 12 that rotates about a hinge point 11, and is normally urged by a tension spring 14 to be retreated above the pipe 3. belongs to.
[0020]
As shown in FIG. 4, the guide rolls 10 a and 10 b rotate with the unwinding of the pipe 3 and the electric wire 7, and the inner upper guide roll 10 a is always elastically biased downward by a compression spring 15. Has been. In addition, an annular groove 16 is formed on the peripheral surface of the upper guide roll 10a so as to accommodate and guide the electric wire 7 located substantially at the center.
[0021]
In this embodiment, the pipe 3 is manufactured by the method shown in FIG. 7, and once the pipe 3 wound in a flat state in the plate width direction is unwound, it is deformed into a pipe shape having a substantially circular cross section. A warp in the plate width direction is applied in advance.
[0022]
That is, in the manufacturing method shown in FIG. 7, a strip (pipe 3 forming material) that has been unwound from the uncoiler 20 and from which bending folds in the plate length direction have been removed by a leveler 21 made up of a plurality of rolls is first formed into a convex roll 22. After passing through a breakdown process in which the concave roll 23 is formed in a C-slip shape in the sheet width direction, the three rolls 24 are passed through a linear forming process in which it is bent stepwise in the sheet width direction so as to approach a cylindrical shape. The preform 25 is preliminarily molded through a fin pass process in which the roll 25 is shaped and held in a substantially circular cross section (pipe shape), and the band plate is heated in a state where the preformed shape is held by a roll or a mold. A heat treatment step having a heating furnace 26 for removing internal strain and freezing the pipe shape, a quenching zone 27 for quenching and hardening the heated pipe-shaped strip, and this heat treatment step. And it is to strip the plate width direction of the pipe-shaped and a winding step of forming a strip made pipe 3 of the take-up Murphy houses winding in the coiler 28 in a flat state.
[0023]
In the heat treatment step, spheroidizing annealing and oil quenching are specifically performed. Spheroidizing annealing is performed at the recrystallization temperature to spheroidize cementite. At the same time, the pipe shape is maintained in the furnace to remove strain and freeze the pipe shape. In the oil quenching after the spheroidizing annealing, the temperature is set to the A3 transformation point or higher and then the oil quenching is performed.
[0024]
With this configuration, in the wire coating apparatus of this embodiment, as shown in FIGS. 1 and 2, when unwinding the strip plate pipe 3 from the reel 4, the wire 7 is moved up and down from the bobbin 8. The strip plate pipe 3 is preliminarily provided in the width direction while being positioned by the pair of guide rolls 10a and 10b and simultaneously unwound using the hand vice 30 or the like while the electric wire 7 is housed and covered therein. The pipe is deformed and extended by a sled ridge.
[0025]
At this time, since the strip plate pipe 3 is deformed into a pipe shape having a substantially circular cross section, it does not hang down like a metal tape measure even if it is unrolled considerably long, and unwinds in a stable direction. be able to.
[0026]
Therefore, it is possible to easily construct the conduits such as the temporary construction pipes that do not require durability and the main construction pipes of the “low-strength parts”, such as the need to bite the electric wires 7 without using piano wires. .
[0027]
Further, the joint portion of the strip plate pipe 3 may be closed with welding or gum tape, but if it is not closed, the internal electric wire 7 can be taken out at any position in the longitudinal direction of the pipe 3. Even if it is disconnected, it can be checked where it was cut or repaired, and it is easy to maintain.
[0028]
Further, when the strip plate pipe 3 is stored, it is wound in a flat state in the plate width direction, so that it can be stored compactly and is convenient for storage and transportation. For example, in the case of a conventional electric pipe, a 5 m or more loading truck is required to carry a pipe of 5 m, but the electric wire covering apparatus of this embodiment can be carried on an ordinary passenger car.
[0029]
Note that the present invention is not limited to the above-described embodiments, and within a range not departing from the gist of the present invention, the structural change of the apparatus, such as separately installing the bobbin and the reel without using the gantry, and the application change of the strip plate tubular member It goes without saying that various changes such as these are possible. For example, it is preferable to use the strip plate tubular member as a tool for working by extending it to a high place where the hand cannot reach, such as a ceiling, or an indicating rod for presentation.
[0030]
【The invention's effect】
According to the first aspect of the present invention, the band plate wound in a flat state in the plate width direction is provided with a warp in the plate width direction in advance so as to be deformed into a tubular shape once unwound. As a result, a highly retractable and retractable belt-plate tubular member that can be stored compactly can be provided.
[0031]
According to the invention of claim 2, a preforming step of bending a plate-shaped strip in a stepwise direction in the plate width direction to form a tubular shape, and heating the strip in a state in which the preformed shape is maintained. A heating furnace for removing internal strain and freezing the tube shape, a heat treatment step having a quenching zone for quenching and hardening the heated tube-shaped strip, and the heat-treated tube-shaped strip in the plate width direction Since the device is provided with a winding step for winding and storing in a flat state, the same actions and effects as those of the invention of claim 1 can be obtained.
[0032]
According to the invention of claim 3, since the strip plate tubular member deformed into a tubular shape by a warp in the plate width direction given in advance is wound and stored in a flat state in the plate width direction. The same operation and effect as the invention of claim 1 can be obtained.
[0033]
According to the invention of claim 4, the bobbin around which the electric wire is wound up and the reel in which the strip is wound in a flat state in the plate width direction are provided, and the strip is unwound from the reel. The strip is deformed into a tubular shape by a pre-given warp in the plate width direction, and is extended while accommodating and covering the electric wire unwound from the bobbin therein, so that construction is easy Can provide a compact wire covering device with excellent maintainability.
[0034]
According to the invention of claim 5, a guide member for positioning and guiding the unwound electric wire on the band plate immediately before being unwound and deformed into a tubular shape is provided. The board can be smoothly unwound.
[0035]
According to invention of Claim 6, since the cutter which can be cut | disconnected before deform | transforming the said unrolled strip into a tube shape was provided, a strip can be easily cut into arbitrary length.
[Brief description of the drawings]
FIG. 1 is a side view of a wire coating apparatus showing an embodiment of the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is an explanatory view of the structure of the bobbin portion.
FIG. 4 is an explanatory view of the structure of the guide roll portion.
FIG. 5 is also an explanatory diagram of a reel.
FIG. 6 is an explanatory view of the bobbin.
FIG. 7 is a manufacturing process diagram of a strip plate pipe.
FIG. 8 is a manufacturing process diagram of a metal tape measure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 2 Case 3 Strip plate pipe 4 Reel 5 Handle 6a, 6b Support bracket 7 Electric wire 8 Bobbin 9 Cutter 10a, 10b Guide roll 11 Hinge point 12 Handle 13 Cutter blade 14 Tension spring 15 Compression spring 16 Annular groove 20 Coiler 21 Leveler 22 Convex roll 23 Concave roll 24 Roll 25 Roll 26 Heating furnace 27 Quench zone 28 Coiler 30 Hand vice

Claims (6)

A winding-and-storing-type band plate that is previously provided with a warp in the plate width direction so as to be deformed into a tubular shape once the band plate wound in a flat state in the plate width direction is unwound. Tubular member. A preforming process in which a plate-shaped strip is bent stepwise in the sheet width direction and formed into a tubular shape, and the strip is heated to remove internal strain and freeze the tube shape while maintaining the preformed shape. And a heat treatment step having a quenching zone for quenching and hardening the heated tube-shaped strip, and winding and storing the heat-treated tube-shaped strip in a flat state in the plate width direction. A method for producing a wind-up and storage-type band plate tubular member characterized by comprising: A method for winding and storing a strip-plate tubular member, comprising winding and storing a strip-plate tubular member that has been deformed into a tubular shape by a preliminarily provided warp in the strip-width direction in a flat state in the strip-width direction. A bobbin around which the electric wire is wound and a reel in which the strip is wound in a flat state in the plate width direction are provided, and when the strip is unwound from the reel, the strip is provided in advance. An electric wire covering apparatus which is deformed into a tubular shape by a warp in the plate width direction and is extended while accommodating and covering an electric wire unwound from the bobbin. 5. The electric wire covering apparatus according to claim 4, wherein a guide member is provided for positioning and guiding the unwound electric wire on the strip immediately before being unwound and deformed into a tubular shape. 6. The electric wire coating apparatus according to claim 4, further comprising a cutter capable of cutting the unrolled strip before being deformed into a tubular shape.

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