JPS6122932Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tape wrapping device for wrapping a corrosion-preventing tape around the outer periphery of a long tubular material or bar-shaped material (hereinafter referred to as a tube/bar material).

Pipe facilities for water conveyance, water transmission, and water distribution in water supply projects, etc. tend to expand to coasts, rivers, rice paddies, and mountain areas due to the rapid expansion of residential land development.
The soil environment has also become diverse. For this reason, soil corrosion and electrolytic corrosion have become a problem even in lead pipes and the like, which have not been a problem in the past, and the number of factors that affect the characteristics of the pipe's outer surface is increasing.

In order to prevent the effects of corrosion and electrolytic corrosion as described above, anti-corrosion and electrolytic corrosion methods have been carried out by wrapping a tape made of a synthetic resin material such as polyethylene on the outside of a lead pipe or the like. However, tapes made of synthetic resin, etc. may vary in material and dimensions (width, thickness, etc.), and even if they are made of the same material, their elasticity, hardness, and adhesiveness may vary depending on the manufacturer. Even if the product is made by the same manufacturer and engineered, there may be slight differences in the material composition, the condition of the manufacturing equipment (new, old, etc.), the environmental conditions at the time of manufacturing such as temperature, humidity, etc. Therefore, it was inevitable that tapes would be manufactured whose physical properties differed to a greater or lesser extent. Furthermore, the physical properties of tape vary depending on the period of storage, transportation and other distribution processes, and the surrounding conditions such as temperature and humidity. This must be done taking into account the characteristics. Conventionally, mechanical methods have used devices that utilize an elastic body and a rod, but these have the drawback of becoming unstable due to changes in the elastic body over time, and their management is also troublesome. Ta.

If the tape winding becomes unstable or incomplete, water with harmful chemical properties may enter through gaps in the tape, corrode the lead pipe, cause electrolytic corrosion, or freeze and cause the tape to deteriorate. There was a risk that the product would be damaged and the purpose of corrosion protection or galvanic corrosion resistance would not be achieved.

This idea was made in view of the fact that conventional tape winding tends to be unstable as mentioned above, and it eliminates the drawbacks of the conventional tape winding and ensures constant winding regardless of the physical characteristics of the tape. To provide a device capable of simply and easily winding tape in a stable state and reliably.

This invention will be described in detail below with reference to the illustrated embodiments.

As shown in FIG. 1, the tube/bar 1 before being wrapped with tape is wound on a drum 2, and the drum 2 is rotated by an appropriate support device (not shown) at one end of the device. Supported with speed control. A winding drum 3 is mounted at the other end of the device in substantially the same manner as the drum 2, and is rotated to wind up the tube/bar 1, so that the winding drum 3 is installed in a substantially straight line between the drum 2 and the winding drum 3.・It is designed to move the bar 1. A pair of drive rolls 4, 4 are positioned near the drum 2 so as to sandwich the pipe/bar 1 (from above and below in the figure), and are mounted so as to rotate at a predetermined number of rotations.
It is driven to pull out the tube/bar 1 from the drum 2 and run it. A large number of pairs of guide rolls 5, 5 are arranged on the straight traveling path of the pipe/bar at a required interval in the running direction of the pipe/bar.
Support and guide pipes and bars so that bending stress does not occur.

A rotating housing 6 is provided approximately midway between the drum 2 and the winding drum 3, and this rotating housing 6 is positioned so that the center hole 7 thereof is penetrated by the traveling pipe/bar 1. It is supported via a bearing member such as a ball 8 so as to be rotatable around the tube/rod 1 . The rotating housing 6 is rotated by a drive device 10 via a rotation transmission member such as a belt 9. As shown in FIGS. 1 and 2, the main part of the rotating housing 6 is a support frame 11 that forms a conical surface. It is positioned relative to the tube/rod 1 so as to extend through the apex in the axial direction of the cone.
Therefore, if the rotary housing 6 is integrally formed, it is necessary to pass the tube/rod 1 through the center hole 7 from the end. Therefore, the rotary housing 6 may be divided into two halves and one end thereof may be joined by a hinge 12, and this case is shown in the figure. In this way, after opening the hinge 12 and receiving the tube/rod 1 into the center hole 7 from the side, the hinge can be closed and the tube/rod 1 can be joined together with the connecting member 13 for use.

The rotating housing 6 has a tape reel 14 rotatably mounted on its conical support frame 11. As shown in the figure, two tape reels 14 holding the tape 15 to be wound around the pipe/rod 1 are preferably located symmetrically, and if necessary, one or three or more tape reels 14 may be provided. The tape reel 14 is characterized in that a braking device is combined with its rotating shaft 16. The braking device is located inside the rotating housing 6, and to be more specific, as shown in FIG. The shaft 19 is supported by a bearing 20 so as to be rotatable together with the rotary shaft 16 and the brake plate 18. The circular brake plate 18 has a surface perpendicular to the axis 19 and is placed in the electromagnet 21 so that it rotates within the gap 23 of the iron core 22 of the electromagnet 21.
In combination, it forms an electromagnetic brake or braking device. Both ends of the winding 24 of the electromagnet 21 are respectively connected to slip rings 25 provided on the rotating housing 6, as shown in FIG.

As shown in Figures 1 and 2, the slip ring 2
5 are in contact with the slider 27 supported by the slider holder 26 even during rotation of the rotating housing 6, and are connected to a control device 30 shown in FIG. 1 by a multi-core cable 28. The control device 30 also controls the drum 2,
It is connected to the winding drum 3, drive roll 4, and drive device 10 by a cable 29 so as to control their rotations.

The tape winding action will be explained. drive roll 4,
4, the tube/bar 1 is pulled out from the drum 2, travels in a straight line guided by a plurality of pairs of guide rolls 5, 5, and is wound onto a winding drum 3. While traveling, the pipe/bar 1 is tensioned or compressed by the guide roll 5 so as not to generate bending stress, and by controlling the rotation of the drum 2, winding drum 3, and drive roll 4 by the control device 30. Avoid creating stress. Since the tube/bar 1 passes through the center hole 7 of the rotary housing 6 while traveling and being fed in this way, the tube/bar 1 moves toward the right toward the winding drum 3 in FIG. A tape reel 14 that rotates on its own axis while revolving together with the rotating housing 6 that revolves (rotates) as the center.
A tape 15 is automatically unwound from the tape 15 and wound around its outer periphery as shown in FIGS. 1 and 2.

The wrap length of one tape is determined by the number of rotations per minute of the rotating housing 6, and the pitch is also determined by the feeding (travel) speed of the tube or bar material. However, since the wrap length and pitch vary depending on the outside diameter of the pipe/bar, the width of the tape, etc., the number of revolutions per minute of the drive device 10 must be determined according to the design of how many layers the tape should be wrapped. are set and controlled by the control device 30. It is also necessary to change the number of tape reels 14, and if there are multiple tape reels, it is ideal to change the phase. This phase difference change is performed by the shaft length adjuster 17.
This can be easily done by changing the axial length of the tape reel 14. The angle at which the tape 15 is wrapped around the tube/rod 1 is approximately equal to 1/2 of the apex angle of the conical surface of the support frame 11, and may be about 45 degrees.

As described above, the adhesive strength of the tape may vary depending on the material, tape width, temperature, etc., and the peeling strength may also vary. Also, the winding force may be different, and it may be rolled loosely, tightly, wrinkled, etc.
It becomes tight, wrinkled, and the lap length and pitch become irregular, which impairs the anticorrosion effect. In order to prevent such unsuccessful winding, in this invention, a braking device is provided on the tape reel of the winding device. The tension of the tape being unwound from the tape reel can be controlled and adjusted automatically (or manually when necessary). That is, at the initial stage of the tape winding process for the pipe/rod 1, the current in the winding 24 of the braking device is checked, set, and adjusted for each tape.

As described above, according to this invention, since the tension can be set for each tape and maintained at this tension, stable winding can be performed with an appropriate winding force for each tape. .

[Brief explanation of the drawing]

Fig. 1 is a side view schematically showing an embodiment of the device for wrapping tape around pipe rods of this invention, Fig. 2 is a perspective view showing a rotating case of the device in Fig. 1, and Fig. 3 is a rotating case. It is a partial sectional view showing the inside. 1... Pipe/bar material, 2... Drum, 3... Winding drum, 4... Drive roll, 5... Guide roll, 6
... Rotating housing, 7 ... Center hole, 8 ... Roller or ball, 9 ... Belt, 10 ... Drive device, 11 ...
...Support frame portion, 12...Hinge, 13...Connection member,
14...tape reel, 15...tape, 16...
... Rotating shaft, 17 ... Shaft length adjuster, 18 ... Braking plate, 19 ... Shaft, 20 ... Bearing, 21 ... Electromagnet, 22 ... Iron core, 23 ... Gap, 24 ... Winding wire, 25 ...Slip ring, 26...Holder,
27...Slider, 28...Multi-core cable, 29...
...cable, 30...control device.

Claims (1)

[Scope of utility model registration request] The rotating case is rotatably mounted on a support frame of a rotating case having a support frame with a conical surface positioned relative to the pipe/bar so that the running pipe/bar moves in the axial direction through the apex. In a tape winding device comprising a tape reel that revolves around the traveling pipe/bar together with a housing and supplies tape to the pipe/bar, the tape reel is combined with a rotating shaft of the tape reel in the rotating housing. a braking device for controlling the tension of the tape during winding, which is mounted on the braking device; a shaft length adjuster that connects and detaches the shaft of the braking device and the rotating shaft of the tape reel; a drum, a winding drum, and a drive roll; and a control device for controlling the rotation of the drive device and the braking force of the braking device.