JPH08290471A - Automatic tape winding device - Google Patents

Abstract

PURPOSE: To provide an automatic tape winding device in which a mechanism installed on a rotary ring is simple and which can exactly perform a series of tape winding work. CONSTITUTION: A rotary ring 71 loaded with only a tape reel 81 is supported freely rotatably by a vertically movable frame 70 on a truck 25. Other mechanisms such as a rotary ring side tape suction pad 77, a steel pipe side tape suction pad 91, and a tape cutter are mounted on the truck 25. In this way, since only small number of devices are placed on the rotary ring, the mechanism is made simple. The suction pads 77, 91 and the tape cutter, which is placed between them, are installed so that sticking, cutting, and the disposal of tape ends after cutting are made sure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to steel pipes which are serially conveyed in a butt state without rotating in a pipe pipe lining pre-process in order to prevent the lining coat from entering the inside of the pipe during the pipe lining process. The present invention relates to an automatic tape winding device that winds an adhesive tape around the abutting portion of.

[0002]

2. Description of the Related Art FIG. 6 is a view showing the abutting of steel pipes which are conveyed in series in a continuous abutting state without rotating in the pipe pre-lining process in order to prevent the lining coat from entering the inside of the pipe during the pipe lining process. Fig. 7 is a side view showing a conventional automatic tape winding device disclosed in Japanese Patent Application No. 5-7052, which winds a tape around a section, and Fig. 7 is a front view thereof. In each figure, the steel pipes 21a and 21b are supported on a steel pipe conveying roller (conveyor) 20, and are conveyed in series in a butt state without rotating. A self-propelled trolley 25 on a rail 24 extending parallel to the steel pipe conveyor
Is installed, and the main body of the tape winding device is installed on the carriage.

The main body of the tape winding device includes a frame 30 which is erected on a carriage, a rotary ring 31 which is attached to the frame 30 and is rotatable on a vertical plane, and a rotary ring 31.
It is composed of a tape supply device 36 provided above. The tape supply device 36 includes a tape reel 38 and tape pull-out mechanisms 41, 43, 44, 45, 46, 47.
And a mechanism for attaching the tape to the outer peripheral surface of the steel pipe,
It is composed of a cutting mechanism 50 for the extra length of tape winding.

The tape winding work is performed by the steel pipes 21a and 21.
The abutting portion of b is detected by the abutting portion detecting means 23, and the carriage 25 is moved to the conveyor 2 based on the detection result.
The tape feeding device 36 supplies the tape 40 to the outer peripheral surface of the steel pipe butting portion while attaching the tape 40 to the outer peripheral surface of the steel pipe while attaching the tape 40 to the outer peripheral surface of the steel pipe. It consists of cutting the extra length of wrapping.

[0005]

As described above, in the conventional automatic tape winding device, the main body of the tape winding device is
It consists of a frame that stands upright on the carriage, a rotating ring that is attached to the frame and can rotate in a vertical plane, and a tape feeding device that is provided on the rotating ring. It is provided on the ring. Since the rotating ring only rotates on the frame, the distance between the center of the steel pipe and the center of the rotating ring changes when the outer diameter of the steel pipe changes, and the tape pull-out length expands and contracts during tape winding work. The tape tension of the tape changed during the work, and the winding was sometimes uneven. Furthermore, since many mechanisms are mounted on the rotating ring, the rotating ring becomes complicated and its weight is increased.

Further, there is no means for treating the leading end of the tape at the beginning of winding and a means for treating the leading and trailing ends of the cut tape after the end of winding, and the tape tension may be insufficient at the time of cutting the tape, which may hinder the cutting work. It was

In view of the above points, the present invention has a simple mechanism provided on a rotating ring and can perform a series of tape winding operations reliably, and in addition to these, an automatic tape winding device. An object of the present invention is to provide a tape winding device that can stably perform tape winding work without changing the distance between the center of the steel pipe and the center of the rotating ring even if the outer diameter changes.

[0008]

A synchronous traveling automatic tape winding device according to the present invention is an automatic tape winding device for winding an adhesive tape around a butt portion of a steel pipe, and (a) a frame provided on a base. And (b) a rotating ring having a central hole through which the steel pipe can pass and rotatably supported on the frame in a vertical plane, and (c) a tape provided on the rotating pipe and attached to the steel pipe butting portion. A tape reel that has a mounting shaft that can adjust the rotational resistance to adjust the tape tension during winding, and (d) a tape reel that is provided on the base so as to face the steel pipe and is abutted against the steel pipe. A tape cutting device that cuts the extra winding length after finishing, (e)
It is provided on the base so as to face the steel pipe, and after winding the tape around the steel pipe butting portion, the extra winding length is supported between the tape cutting device and the rotating ring, and the extra winding length is cut. The tape continues to be supported even after the tape is rolled up, and at the time of the next tape winding, the tape end of the rotating ring side tape that is in the supported state is pressed against the next butting portion of the steel pipe, and the (f) steel pipe is exposed. Steel pipe installed on the base and supporting the extra winding length between the tape cutting device and the steel pipe after the tape is wound around the steel pipe abutting part, and is supported after the extra winding length is cut. The steel pipe side tape suction pad device for pressing the side tape end against the steel pipe butting portion is provided.

Further, in addition to the above construction, a tape terminal processing unit table equipped with a tape cutting device, a rotary ring side tape suction pad device and a steel pipe side tape suction pad device is movably provided on the base. In addition to the above, and in addition to these configurations, the frame is an automatic tape winding device in which the frame is a vertically movable frame.

[0010]

In the invention according to claim 1, the tape is attached by the following series of operations. (1) Based on the tape attachment command, the rotating ring-side tape suction pad device advances the rotating ring-side tape suction pad toward the steel pipe side, and presses the rotating ring-side tape end that has been sucked in advance against the steel pipe butting portion, Stick on the outer surface of the steel pipe. (2) In this state, at the same time as rotating the rotating ring, the rotating ring side tape suction pad device separates the rotating ring side tape suction pad from the outer surface of the steel pipe and retracts it to a predetermined standby position. (3) With the rotation of the rotating ring, the tape is pulled out from the tape reel, and the winding of the tape around the outer surface of the steel pipe butting portion starts. The tape attachment force is adjusted by presetting the rotational resistance force of the tape reel mounting shaft center. (4) After the specified number of rotations, the rotating ring stops at a predetermined position. After stopping the rotation of the rotating ring, the steel pipe side tape suction pad device and the rotating ring side tape suction pad device are
Advance the steel pipe side tape suction pad and the rotating ring side tape suction pad to the steel pipe outer surface side from the standby position,
Adsorb the extra length of tape wound. (5) The tape cutting device advances the tape cutting blade portion to the outer surface side of the steel pipe, and the tape cutting blade portion in a state in which the tape winding surplus portion is supported by the steel pipe side tape suction pad and the rotating ring side tape suction pad. Is operated to cut between the pair of tape suction pads in the tape winding extra length portion. (6) After cutting the tape, the tape cutting blade portion is retracted to the standby position. (7) Furthermore, the tape suction pad device on the rotating ring side is
The rotary ring side tape suction pad in the state where the rotary ring side tape end of the extra tape winding portion is suctioned is retracted to the standby position. (8) Further, the steel pipe side tape suction pad device advances the steel pipe side tape suction pad to the outer surface side of the steel pipe, and affixes the steel pipe side tape end of the adsorbed tape winding extra length portion to the steel pipe butting portion. Then, the suction of the tape is stopped, the tape is separated from the outer surface of the steel pipe, and the tape is retracted to the standby position.

According to the second aspect of the invention, the tape end processing unit table equipped with the tape cutting device, the rotary ring side tape suction pad device and the steel pipe side tape suction pad device is moved according to the operation of each of these devices. , Simplifying the structure and operation of each of these devices. In the invention according to claim 3, before the start of the series of operations described above, the vertically movable frame is moved up and down so that the center of the steel pipe and the center of the rotating ring coincide with each other.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view showing the overall construction of a synchronous traveling type automatic tape winding device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 4A to 4F are explanatory views showing the movement of each device when the tape winding operation is completed, and FIGS.
FIG. 3 is a block diagram showing the configuration of the control unit.

In each figure, 20 is a roller (conveyor) that conveys the steel pipes in series in a continuous abutting state without rotating the steel pipes, 21a and 21b are steel pipes, and 22 is the conveyor 20.
A conveyor speed detector, such as an encoder, for detecting the conveying speed of the steel pipe, and 23 is a butt portion detecting means for detecting the butt portion of the steel pipes 21a, 21b conveyed by the conveyor 20 at a predetermined position. In the present embodiment, the abutting portion detecting means 23 is a transmissive sensor projection head 23 fixedly installed at a predetermined position so as to face the steel pipe.
a, a light receiving head 23b, and a sensor amplifier. Reference numeral 24 is a rail laid along the conveying direction of the conveyor 20, 25 is a traveling carriage that can travel on the rail 24, 26 is a carriage drive motor for driving the traveling carriage 25, 2
Reference numeral 7 is a vehicle speed detector for detecting the traveling speed of the traveling vehicle 25. In this embodiment, the truck speed detector 27 is composed of an encoder or the like attached to the output shaft of the truck driving motor 26.

28 is a fixed frame having a linear slide mechanism which is erected on the traveling carriage 25, 40 is a tape wound around a steel pipe, 51 is a tape remaining amount detector provided near the tape reel 71, and 52 is a tape remaining amount detector. A limit switch for detecting that the traveling vehicle 25 is in the standby position, 53 is a limit switch for detecting that the traveling vehicle 25 has overrun beyond the traveling range, and 54 is a control device installed on the traveling vehicle 25.

Reference numeral 70 denotes a vertically movable frame which is supported by a linear slide mechanism provided on the fixed frame 28 and has a central hole larger than the central hole of a rotary ring, which will be described later.
Reference numeral 1 denotes a rotating ring 72a, 7 having a central hole through which the steel pipes 21a, 21b conveyed by the conveyor can pass and rotatably supported on a vertically movable frame 70 in a vertical plane.
Reference numerals 2b, 72c, 72d, 72e, and 72f are provided on the vertically movable frame 70, and idle pulleys that rotatably support the rotating ring 71, and 73 are provided on the vertically movable frame, and drive a ring drive gear described later. A ring drive motor, 74 is a ring drive gear that is attached to the output shaft of the ring drive motor 73 and drives the rotating ring 70,
Reference numeral 75 denotes a ring rotation detector that detects the amount of rotation of the rotating ring, which is an encoder in this embodiment.

Reference numeral 76 is a tape terminal processing unit table provided on the traveling carriage 24, 77 is a rotary ring side tape suction pad for suctioning the rotation ring 71 side of a tape winding extra length portion, and 78 is a rotary ring side tape suction pad. It is a rotary ring side tape suction pad drive mechanism that drives 77 forward and backward, left and right, and up and down with respect to the steel pipe transport direction.
It is composed of 8z. Numeral 79 is a tape cutter for cutting the extra winding length after the tape is wound around the abutting portion of the steel pipe, and numeral 80 is a cutter driving mechanism for driving the tape cutter 79 on the tape in the front-back and left-right directions.
0y and right and left cylinders 80x. Reference numeral 91 is a steel pipe side tape suction pad for sucking the steel pipes 21a and 21b near the tape winding extra length portion, and 92 is a steel pipe side tape suction pad 9
1 is a steel pipe side tape suction pad drive mechanism that drives 1 in the front-back, left-right, and up-down directions with respect to the steel pipe transport direction, and includes a front-rear cylinder 92y, the left-right cylinder 78x, and an upper-lower cylinder 92z.

That is, the tape terminal processing unit table 7
6, a rotary ring side tape suction pad 77, a rotary ring side suction pad drive mechanism 78, and a tape cutter 79.
A tape cutter drive mechanism 80, a steel pipe side tape suction pad 91, and a steel pipe side tape suction pad drive mechanism 92 are mounted.

Reference numeral 81 denotes a tape reel having a mounting shaft, which will be described later, on which a rotation resistance force for adjusting the tape tension when the tape is wound around the outer peripheral surface of the steel pipe can be adjusted. A force-adjustable mounting shaft 85 is a frame drive motor that is provided on the traveling carriage 25 and drives the vertically movable frame 70.

Here, the operation of each part of this embodiment is shown in FIG.
(F) will be described, and then the operation of the control device will be described.

First, the center of the rotating ring 71 is the steel pipe 21.
The vertically movable frame is moved up and down so as to coincide with the centers of a and 21b. The steel pipes are conveyed serially on the conveyor 20 in a continuous butted state without rotating. At this time, the conveyor speed is detected by the conveyor speed detector 22 and sent to the controller 54. The butt detection means 23 determines the butt portions of the steel pipes that have reached the predetermined position based on the number of pipe ends (two), and notifies the control device 54 that the butt portions of the steel pipes have reached the predetermined position. After that, the control device 5
4 commands the following movements to each part of the apparatus.

1) The controller 54 is the conveyor speed detector 2
Conveyor speed from 2 and steel pipe abutting portion detection means 23
From the detection result of the steel pipe abutting portion, the time until the steel pipe abutting portion reaches the reference position where the rotating ring 71 is on standby is calculated, and after the calculated time elapses, the traveling carriage 25 travels in synchronization with the conveyor 20. (Initial state shown in FIG. 4 (a))

2) When the traveling carriage is traveling in synchronization with the conveyor, the rotating ring side suction pad drive mechanism 78 causes the rotating ring side tape suction pad 77 to move based on the tape attachment command from the controller 54 to the steel pipe butting portion. Advancing to the steel pipe side, press the sticking tape end of the rotating ring side to the steel pipe butting part and stick it. (Attached state shown in FIG. 4B)

3) The rotating ring 71 is rotated by the rotation of the ring drive motor 73 started based on the rotation command from the control device 54.

4) At the same time, the rotary ring side suction pad drive mechanism 78 stops the tape suction based on the rotation ring side tape suction pad retracting command from the controller 54.
The rotary ring side tape suction pad 77 is separated from the outer surface of the steel pipe and retracted to a predetermined standby position. (Wound state shown in FIG. 4 (c))

5) Here, since the tape is pulled out from the tape reel 81 as the rotating ring 71 rotates,
Winding of the tape on the outer surface of the steel pipe butted part begins. The tape sticking force is 8
It is adjusted by setting the rotational resistance force of 2 in advance. (Wound state shown in FIG. 4 (c))

6) When the number of rotations detected by the ring rotation speed detection device 75 reaches the specified number, the rotation ring 71 is controlled by the control device 5
Based on the rotation stop command from 4, the motor stops at a predetermined position. At this time, the traveling vehicle 25 continues the synchronous traveling.

7) After the rotation of the rotating ring 71 is stopped, the rotating ring side tape suction pad drive mechanism 78 and the steel pipe side tape suction pad drive mechanism 92, based on the tape suction command from the controller 54, rotate the rotary ring side tape suction pad. Pat 77
Then, the steel pipe side tape suction pad 91 is advanced from the standby position to the outer surface side of the steel pipe, and the extra winding portion of the tape is sucked. (Tape suction state shown in FIG. 4D)

8) Next, the rotary ring side tape suction pad drive mechanism 78 and the steel pipe side tape suction pad drive mechanism 92.
On the basis of a tape tension load command from the control device 54, the relative distance between the rotating ring side tape suction pad 77 and the steel pipe side tape suction pad 91 is increased to increase the tape tension between these suction pads.

9) The cutter driving mechanism 80 includes a controller 54
Based on a tape cutting command from the tape cutter 79, the tape cutter 79 is advanced to the outer surface side of the steel pipe, and further, the tape cutter is moved to the rotating ring side in a state where the tension of the tape is increased, and the rotating ring of the tape winding extra length portion is rotated. Side tape suction pad 77
The tape suction pad 91 on the steel pipe side is cut off. (Fig. 4
(Tape cut state shown in (e))

10) After the tape is cut, the rotary ring side tape suction pad 77 in the state where the tape cutter 79 and the rotary ring side tape end are suctioned is retreated to the standby position based on the retraction command from the control device 54.

11) Further, the steel pipe side tape suction pad drive mechanism 92 pushes the steel pipe side tape suction pad 91 against the steel pipe abutting portion based on the tape end pressing command of the control device 54, so that the steel pipe side tape end which is sucked. Sticking on the outer peripheral surface of the steel pipe butted portion, pressing the tape end against the outer surface of the steel pipe for a predetermined time (a state in which the tape non-adhesive end shown in FIG. 4 (f) is attached to the outer peripheral surface of the steel pipe), and then stopping the tape adsorption, Move away from the outer surface of the steel pipe and retract to the standby position.

12) During this time, the rotating ring 71 is reversed by a predetermined angle to facilitate the advancement of the rotating ring side tape suction pad 77 to the steel pipe side at the time of the next tape application, so that the rotating ring side tape end is attached. Loosen. (Fig. 4 (a)
(Initial state shown in)

13) The control device 54 issues a stop standby command to the traveling carriage for the first time when the steel pipe side tape suction pad 91 is separated from the outer surface of the steel pipe.

14) The traveling carriage 25 is connected to the control device 5
Based on the stop / standby command from 4, the vehicle stops, further moves back to a predetermined standby position, and waits until the next running command is input.

The winding of the tape at the abutting portion is completed by the above steps. Then, when the next butted portion is detected, the process is restarted from the step 1).

As shown in FIG. 5, the control device 54 is composed of three control units, that is, a synchronization signal output unit 55, a traveling carriage controller 56, and a tape winding controller 57.
Here, the function of each control unit will be described.

The synchronizing signal output section 55 outputs the synchronizing signal based on a) the conveyor speed detected by the conveyor speed detector 22 and the result detected by the front matching section detecting stage 23.

When the synchronizing signal is output from the synchronizing signal output section 55, the traveling vehicle controller 56:
From the conveyor speed from the conveyor speed detector and the steel pipe abutting portion detection result of the steel pipe abutting portion detecting means, calculate the time until the steel pipe abutting portion reaches the standby position where the rotating ring 71 is on standby,

(C) After the lapse of the calculated time, the carriage drive motor 26 is driven to start the traveling of the traveling carriage 25 from the standby position and to make it synchronous with the conveyor.

(D) The positional deviation between the steel pipe butting portion and the rotating ring at the start of traveling is corrected by the acceleration / deceleration control based on the speed table set in advance.

E) When entering the traveling at the same speed as the conveyor,
The tape winding controller 57 indicates that the synchronous running has started.
Let us know.

(F) Further, when a tape winding completion signal is input (connected through a process described later), the carriage drive motor 26 is stopped and then rotated in the reverse direction so that the traveling carriage 25 travels toward the standby position. .

G) When a signal is input from the limit switch 52 which detects that the traveling vehicle 25 is at the standby position,
Stop the carriage. Further, when a signal is input from the limit switch 53 that detects that the vehicle has overrun, the traveling vehicle 25 is stopped and an informing means (not shown) is instructed to issue an alarm.

The tape winding controller 57 receives the sync signal from the sync signal output section 55, and then the signal from the traveling vehicle controller 56 to notify that the synchronous traveling is started. The pad 77 is moved right below the steel pipe, and the cylinder 78z that drives it up and down is driven to raise the rotating ring side tape suction pad to the steel pipe side, and the rotating ring side tape end is attached to the steel pipe. (Attached state shown in FIG. 4B)

Next, the ring drive motor is driven to rotate the rotary ring 71, the tape suction of the rotary ring side tape suction pad 77 is stopped, and the tape suction pad 77 is moved away from the steel pipe. At this time, the tape suction pad 77 descends, retracts in the direction opposite to the direction in which the steel pipe is conveyed and at a right angle, and stops at a standby position that does not hinder the tape winding work on the steel pipe. (Wound state shown in FIG. 4 (c))

Then, the number of tape windings on the outer circumference of the steel pipe is determined based on the amount of ring rotation detected by the ring rotation detector 75, and when the specified number of windings is reached, the rotating ring 71 is rotated.
Is stopped at a predetermined origin position.

Then, the rotary ring side tape suction pad 77 and the steel pipe side tape suction pad 91 are respectively advanced to the steel pipe side and raised to suck the tape. (Fig. 4
(Tape suction state shown in (d)) Further, only one suction pad is raised or lowered to increase the tape tension, and the tape cutter 7 is operated in a state where the tape tension is increased.
9 is operated to cut the tape winding extra length portion between the pair of suction pads 77 and 91. (Tape cut state shown in FIG. 4E))

After the completion of cutting, the tape cutter 79 is retracted, the rotary ring side suction pad 77 is lowered in a state in which the rotary ring side tape end of the extra length portion of the winding is sucked, and each is retracted to the standby position.

W) Further, the tape suction pad 91 on the steel pipe side
To the steel pipe side, and after pressing the tape end tape end of the adsorbed extra length of the pipe end to the steel pipe abutting part for a predetermined time (attaching the tape non-adhesive end to the steel pipe outer peripheral surface shown in Fig. 4 (f)). (Attached state), stop sucking the tape, and retract it to the standby position. Then, the traveling carriage controller 56
The tape winding completion signal is output to and the next tape winding start signal is input. (Initial state shown in FIG. 4 (a))

Each of the suction pads is an air suction type, and the tape suction portion is a box made of a material having air permeability. Further, the suction portion may be a flat plate having a vent hole.

Further, each of the suction pad drive mechanisms described above is composed of a combination of unidirectional telescopic cylinders.
The same function can be achieved by a combination of turning levers that give an arc locus. The same function can be achieved by combining the one-way telescopic cylinder and the turning lever.

In the above embodiment, the tape terminal processing unit table 76 provided with the rotary ring side tape suction pad drive mechanism 78, the steel pipe side tape suction pad drive mechanism 92 and the tape cutter drive mechanism 80 is mounted on the traveling carriage 25. However, the present invention is not limited to this, and the tape terminal processing unit table 76 may be movable on the traveling carriage 25. At this time, the tape terminal processing unit table 76
Are driven on a horizontal plane by unidirectional telescopic cylinders in the traveling direction of the traveling carriage 25 and in two directions perpendicular thereto. Then, each tape suction pad drive mechanism 78 and 92
Is composed of one uniaxial expansion / contraction cylinder 78z and 92z which are respectively driven up and down, while the tape cutter drive mechanism 80 is composed of one uniaxial expansion / contraction cylinder 80y which is driven back and forth. That is, since each tape suction pad is guided to a predetermined horizontal position by the movement of the unit table 76, the movement of each drive mechanism itself is
Only one direction is required, and the mechanism is simple and compact.

Although the tape cutter having the inclined blade portion is moved in the horizontal direction when the extra winding length of the tape is cut in the above embodiment, the present invention is not limited thereto. Alternatively, a tape cutter having an inclined or horizontal blade may be lifted. At this time, if the tape terminal processing unit table 76 is movably installed on the traveling carriage 25, the tape cutter drive mechanism and the tape suction pad drive mechanism on the rotating ring side and the steel pipe side are respectively driven up and down by one. It is composed of a uniaxial telescopic cylinder, which makes the mechanism simpler.

[0054]

According to the first aspect of the invention, only the tape reel is mounted on the rotating ring, and the tape cutting mechanism, the tape attaching mechanism, the tape holding mechanism, etc. are all provided on the base. The rotating ring is simple and lightweight,
Further, there is an effect that the support mechanism of the rotating ring is simple and lightweight, and further transmission of power and signals such as electric power, hydraulic pressure, pneumatic pressure and the like to the rotating ring becomes unnecessary.

Further, since the tape cutting device is provided between the steel pipe side tape suction pad device and the rotating ring side tape suction pad device, the tape can be cut while both sides are supported by the pair of tape suction pads. Secure tape cutting work. Furthermore, since the tension can be applied to the tape in the supported state by changing the relative distance between the pair of tape suction pads, there is an effect that the tape cutting operation becomes more reliable.

Further, in the steel pipe side tape suction pad device, the tape end on the steel pipe side after the extra length of winding is cut is pressed against the steel pipe butting part to attach it, so that the tape non-adhesive end on the outer peripheral surface of the steel pipe. It has the effect that the tape does not stick out, and the work of pressing the tape-unbonded end becomes unnecessary.

Further, the rotary ring side tape suction pad device continues to support the rotary ring side tape end after the extra winding length is cut, and at the time of the next tape winding, the rotary ring side tape adsorbed. Since the terminal is pressed and attached to the next butted portion of the steel pipe, there is an effect that the tape winding work becomes reliable.

According to the second aspect of the invention, in addition to these, the tape terminal processing unit table equipped with the tape cutting device, the rotary ring side tape suction pad device and the steel pipe side tape suction pad device is movable on the base. Since the tape end processing unit table is moved to a predetermined position according to the operation of each of these devices, the drive mechanism of each of these devices has a narrow operating range and a limited operating direction, and each device The effect is simple and compact.

In the invention according to claim 3, in addition to these, since the rotating ring is provided on the vertically movable frame, the center of the steel pipe and the center of the rotating ring can be aligned even if the outer diameter of the steel pipe changes. There is an effect that the tape tension of the tape during the tape winding operation becomes constant, and the winding becomes uniform.

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of an automatic tape winding device according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

3 is an enlarged plan view showing a rotary ring portion of FIG. 1. FIG.

4A and 4B are explanatory views showing the movement of each part of the tape supply unit in FIG. 3, where FIG. 4A is an initial state, FIG. 4B is a pasting state, FIG. 4C is a winding state, and FIG. Status,
(E) shows a tape cut state, and (f) shows a tape non-adhesive terminal attached to the outer surface of the steel pipe.

FIG. 5 is a block diagram showing a configuration of a control unit of the automatic tape winding device according to the embodiment of the present invention.

FIG. 6 is a side view showing the overall configuration of a conventional automatic tape winding device.

FIG. 7 is a front view of FIG.

[Explanation of symbols]

 20 Steel Pipe Conveying Roller (Conveyor) 25 Traveling Carriage 28 Fixed Mount 54 Control Device 70 Vertically Moving Frame 71 Rotating Ring 73 Ring Drive Motor 76 Tape Terminal Processing Unit Table 77 Rotating Ring Side Tape Adsorption Pad 79 Tape Cutter 91 Steel Pipe Side Tape Adsorption Pad 21a Steel pipe 21b steel pipe

Claims (3)

[Claims] 1. An automatic tape winding device for winding an adhesive tape around a butted portion of a steel pipe, comprising: (a) a frame provided on a base, and (b) a central hole through which the steel pipe can pass. A rotating ring that is rotatably supported in a vertical plane on the frame, and (c) is installed on the rotating ring, and the rotational resistance force for adjusting the tape tension when the tape is wound around the steel pipe butting part can be adjusted. A tape reel having a certain mounting shaft, and (d) a tape cutting device which is provided on the base so as to face the steel pipe and cuts the extra winding length after the tape is wound around the steel pipe abutting portion, ) It is provided on the base so as to face the steel pipe, and after winding the tape around the steel pipe butting portion, the extra winding length is supported between the tape cutting device and the rotating ring, and the extra winding length is cut. Continued to be supported after At the time of tape winding, the tape adsorbing pad device on the rotating ring side that presses the tape end on the rotating ring side in the supported state to the next butting part of the steel pipe, and (f) the steel pipe installed on the base facing the steel pipe. After the tape has been wound around the butt section, the extra winding length is supported between the tape cutting device and the steel pipe, and after the extra winding length is cut, the tape end on the steel pipe side in the supported state is welded to the steel pipe butt section. An automatic tape winding device having a steel pipe side tape suction pad device to be pressed. 2. The automatic tape according to claim 1, wherein a tape end processing unit table equipped with a tape cutting device, a rotary ring side tape suction pad device, and a steel pipe side tape suction pad device is movably provided on a base. Winding device. 3. The automatic tape winding device according to claim 1, wherein the frame is a vertically movable frame.