JPH08142194A - Automatic tape winding apparatus - Google Patents

Abstract

PURPOSE: To provide an automatic tape winding apparatus which has a simple mechanism provided on a rotary ring and can effectively wind a series of tape. CONSTITUTION: A rotary ring 71 is rotatably supported to the vertically movable frame 70 on a traveling truck 25. An accumulation roller 73 for applying tension to the tape at the time of cutting the tape to a tape reel 81 is placed on the ring 71, and mechanisms such as the other tape suction pad 77, a tape cutter 79, are provided on the truck 25. Thus, since the equipments placed on the ring are small, the mechanism becomes simple. Since the pad unit is provided, the tape can be effectively tensioned.

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 rotary 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 rotary ring and attached to the outer peripheral surface of the steel pipe. 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 to face the steel pipe and is mounted on the outer peripheral surface of the steel pipe. A tape suction pad device that supports the extra winding length after completion, supports the ends of the tape that has been further cut, and further presses the ends of the tape in the supported state onto the outer peripheral surface of the steel pipe during the next tape winding, e) Face the steel pipe A tape cutting device that is provided on the table and that cuts the extra winding length after the tape is wound around the outer peripheral surface of the steel pipe; An accum roller for applying a tension to the tape when the tape is cut, and (g) an accum roller driving means that is provided on the base and moves the accum roller at the position of the rotating ring at the end of winding the tape. It will be.

Further, in addition to the above construction, a tape terminal pressing mechanism for pressing the unbonded portion of the tape to the steel pipe to the outer surface of the steel pipe when the extra winding length is cut, 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) On the basis of the tape sticking command, the tape suction pad device advances the tape suction pad toward the steel pipe, presses the sucked tape end against the steel pipe butting portion, and sticks it to the outer surface of the steel pipe.

(2) In this state, at the same time when the rotary ring is rotated, the tape suction pad device separates the tape suction pad from the outer surface of the steel pipe and retracts it to a predetermined retracted 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 abutting portion starts. The tape attachment force is adjusted by presetting the rotational resistance force of the tape reel mounting shaft center.

(4) The rotating ring stops at a predetermined position after the specified number of rotations. After the rotation of the rotary ring is stopped, the tape suction pad device advances the tape suction pad from the retracted position to the outer surface of the steel pipe, and sucks the extra winding length of the tape.

(5) Next, the accum roller on the rotating ring is moved to remove the slack of the tape and at the same time increase the tension of the tape.

(6) The tape cutting device advances the tape cutting blade portion to the outer surface side of the steel pipe, and operates the tape cutting blade portion in a state where the tension of the tape is large, so that the tape winding blade portion has an outer surface of the steel pipe. Cut between the tape suction pads.

(7) After cutting the tape, the tape suction pad and the tape cutting blade portion, which are still sucking the tape, are retreated to the retreat positions.

Further, after this, the tape end pressing mechanism presses the steel pipe side of the cut tape end against the outer peripheral surface of the steel pipe, and then separates from the outer surface of the steel pipe and retreats to the standby position.

In the invention according to claim 3, before the start of the series of operations, the vertically movable frame is moved up and down so that the center of the steel pipe and the center of the rotary ring coincide with each other.

[0020]

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 drawing, 20 is a roller (conveyor) that conveys the steel pipes in series in a continuous butted state without rotating the steel pipes, 21a, 21b and 21c are steel pipes, and 22 is a encoder for detecting the conveying speed of the conveyer 20, for example. The conveyor speed detector 23 comprises a butt portion detecting means for detecting the butt portions of the steel pipes 21a, 21b, 21c conveyed by the conveyor 20 at predetermined positions. In this embodiment, the abutting portion detecting means 23 is
It is composed of a light-transmitting head 23a and a light-receiving head 23b of a transmission type sensor fixedly installed at a predetermined position facing the steel pipe, and a sensor amplifier. 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, and 27 is a traveling speed of the traveling carriage 25. It is a trolley speed detector for detecting. 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 limit switch that detects that the traveling vehicle 25 is in the standby position, 53 is a limit switch that detects 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 supply unit provided on the traveling carriage 24, 77 is a tape suction pad for sucking a tape, and 78 is a suction for driving the tape suction pad 77 forward, backward, up and down, and left and right with respect to the steel pipe transport direction. A pad drive cylinder, 79 is a tape cutter that cuts an extra length of the tape after winding the tape around the outer peripheral surface of the steel pipe, 80 is a cutter drive cylinder that drives the tape cutter 79 in a direction perpendicular to the tape, and 91 is tape winding After the end, the tape terminal pressing plate for sticking the unbonded terminal part of the tape to the steel pipe to the outer peripheral surface of the steel pipe when the extra winding length is cut, 92 is a tape terminal pressing plate for driving the tape terminal pressing plate 91 It is a drive cylinder.

That is, the tape supply unit 76 includes a tape suction pad 37, a suction pad drive cylinder 78, a tape cutter 79, a cutter drive cylinder 80, a tape end holding plate 91, and a tape end holding plate drive cylinder 9.
It consists of two.

Reference numeral 81 designates 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 mounting shaft whose force can be adjusted, 83 is provided on the rotary ring so as to be movable in a substantially radial direction of the rotary ring, and an accum roller for applying a tension to the tape when the tape is cut, and 84 are provided on a vertically movable frame. An accum roller drive cylinder that drives the accum roller 83 on the rotating ring, and a frame drive motor 85 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, 21b, and 21c. 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. Match detection means 23
Determines the abutting portion of the steel pipe that has reached the predetermined position based on the number of pipe ends (two), and notifies the control device 54 that the abutting portions of the steel pipes have reached the predetermined position. After that, the control device 54 commands the following movements to each part of the device.

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 moves in synchronism with the conveyor, the suction pad cylinder 78 advances the tape suction pad 77 to the steel pipe side based on the tape sticking command from the control device 54 to the steel pipe, and sucks it. Press the tape end on the steel pipe butt. (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 controller 54.

4) At the same time, the suction pad drive cylinder 78
On the basis of a tape suction pad retreat command from the control device 54, the tape suction pad 77 is separated from the outer surface of the steel pipe and retracted to a predetermined retreat position. (Wound state shown in FIG. 4 (c))

5) Here, since the tape is pulled out from the tape reel 81 as the rotary 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 suction pad drive cylinder 78 advances the tape suction pad 77 from the retracted position to the outer surface of the steel pipe based on the tape suction command from the control device 54 to wind the tape. Adsorb the extra length. (Tape suction state shown in FIG. 4D)

8) Next, the accum roller drive cylinder 74 on the vertically movable frame 70 operates based on the operation command from the control device 54, and moves the accum roller 83 on the rotating ring 71 to increase the tape tension. Enlarge.

9) The cutter driving cylinder 80 is operated by the tape cutter 7 based on a tape cutting command from the controller 54.
9 is advanced to the outer surface side of the steel pipe, and the tape cutter is operated in a state where the tension of the tape is increased to disconnect the outer surface of the steel pipe of the tape winding extra length portion and the tape suction pad. (Fig. 4
(Tape cut state shown in (e))

10) After cutting the tape, the tape suction pad 77 and the tape cutter 79, which are still sucking the tape,
Based on an evacuation command from the control device 54, each is retreated to the evacuation position.

11) Further, the tape terminal pressing plate 91 on the traveling carriage 25 adheres the steel pipe side unbonded end of the cut tape to the outer peripheral surface of the steel pipe in accordance with the tape terminal pressing command of the control device 54, and a predetermined length. The tape end is pressed against the outer surface of the steel pipe for a period of time (attached to the outer peripheral surface of the steel pipe of the tape-unbonded end shown in FIG. 4 (f)), and then separated from the outer surface of the steel pipe and retracted to the standby position. (Initial state shown in FIG. 4 (a))

12) The control device 54 issues a stop standby command to the traveling carriage for the first time when the pressing of the tape end against the steel pipe is completed.

13) Then, the traveling carriage 25 is connected to the controller 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 synchronization signal output section 55 outputs a) a synchronization signal based on a) the conveyor speed detected by the conveyor speed detector 22 and the result detected by the front matching section detection stage 23.

The traveling vehicle controller 56: b) When the synchronization signal is output from the synchronization signal output section 55,
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, the time until the steel pipe abutting portion reaches the standby position where the rotating ring 71 is on standby is calculated, and c) is calculated. After a lapse of time, the carriage drive motor 26 is driven to start the traveling of the traveling carriage 25 from the standby position so as to synchronize with the conveyor. d) The positional deviation between the steel pipe abutting portion and the rotating ring at the start of traveling is corrected by acceleration / deceleration control based on a preset speed table.

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 from step m, which will be 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 that detects that the traveling vehicle 25 is at the standby position, the traveling vehicle is stopped. 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: h) When a synchronizing signal is input from the synchronizing signal output section 55 and then a signal notifying that the traveling carriage controller 56 has started the synchronous traveling is input, the tape suction pad 77.
Is moved right below the steel pipe, and the cylinder that drives it up and down is driven to raise the tape suction pad to the steel pipe side, and the tape is attached to the steel pipe. (Attached state shown in FIG. 4B) i) Next, the ring drive motor is driven to rotate the rotating ring 71 and the tape suction pad 77 is moved away from the steel pipe. At this time, the tape suction pad descends, retracts in the direction opposite to the transport direction of the steel pipe, further retracts in the horizontal plane, and stops at the standby position where there is no hindrance to the tape winding work on the steel pipe. (Wound state shown in FIG. 4 (c))

J) Then, the number of windings of the tape on the outer circumference of the steel pipe is judged 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. k) Then, the suction pad 77 is moved forward and raised to suck the tape (tape suction state shown in FIG. 4D)), and the accum roller 73 is moved to increase the tape tension so that the tape tension is increased. The tape cutter 79 is actuated in the enlarged state to cut the tape winding extra length portion.
(Tape cutting state shown in FIG. 4E)), 1) After the cutting is completed, the accum roller 73 is returned to its original position, the suction pad 77 is lowered with the tape being sucked, and the tape cutter 79 is moved backward. Retract to the standby position respectively.

M) Further, the tape end pressing plate 91 is further advanced, and the tape non-adhesive end is pressed against the outer surface of the steel pipe for a predetermined time (affixing the tape non-adhesive end to the outer peripheral surface of the steel pipe shown in FIG. 4 (f)). State), retract to the standby position. Then, the tape winding completion signal is output to the traveling carriage controller 56 (connected to the step f), and the input waiting state of the next tape winding start signal is set. (Initial state shown in FIG. 4 (a))

[0050]

According to the first aspect of the invention, only the tape reel and the accum roller are mounted on the rotating ring, and the cutting mechanism, the sticking mechanism, the tape holding mechanism, the accum roller driving mechanism, etc. are all on the base. Since it was installed in
The rotating ring is simple and lightweight, and further, the supporting mechanism of the rotating ring is simple and lightweight, and there is an effect that transmission of power such as electric power, hydraulic pressure, pneumatic pressure and signals to the rotating ring is unnecessary. Further, since the accum roller is provided on the rotating ring and the accum roller is actuated to operate the tape cutting device in a state where the tension of the tape is increased, the tape cutting operation is surely performed. Further, since the tape suction pad device is provided, the end treatment of the tape is ensured.

In the invention according to claim 2, in addition to the above, the tape terminal pressing mechanism provided on the base is
Since the steel pipe side of the cut tape end is pressed and adhered to the outer peripheral surface of the steel pipe, the tape non-adhesive end does not stick out on the outer peripheral surface of the steel pipe, and the work of pressing the tape non-adhesive end is unnecessary.

In the invention according to claim 3, in addition to these, since the rotary ring is provided on the vertically movable frame, the center of the steel pipe and the center of the rotary 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 a synchronous running automatic tape winding device according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged front view showing a rotating ring portion of 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 synchronous running 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 synchronous traveling type automatic tape winding device.

FIG. 7 is a front view of FIG.

[Explanation of symbols]

 20 Steel Pipe Conveying Rollers (Conveyors) 21a, 21b, 21c Steel Pipe 25 Traveling Cart 28 Fixed Mount 54 Control Unit 70 Vertically Moving Frame 71 Rotating Ring 73 Ring Drive Motor 76 Tape Supply Unit 77 Tape Adsorption Pad 79 Tape Cutter 81 Tape Reel 83 Accum Roller

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 outer peripheral surface of the steel pipe can be adjusted. A tape reel having a certain mounting shaft, and (d) the tape which is provided on the base so as to face the steel pipe, supports the extra winding length after the tape is wound around the outer peripheral surface of the steel pipe, and is further cut The tape suction pad device that supports the end of the steel pipe and presses the end of the supported tape against the outer peripheral surface of the steel pipe during the next tape winding, and (e) is provided on the base so as to face the steel pipe and Extra length after wrapping the tape around the surface A tape cutting device for cutting the tape, (f) an accum roller that is provided on the rotating ring so as to be movable in a substantially radial direction of the rotating ring, and applies a tension to the tape when cutting the tape, and (g) on the base. And an accumulator driving means for moving the accum roller at the position of the rotary ring at the end of tape winding. 2. The automatic tape winding mechanism according to claim 1, further comprising a tape terminal pressing mechanism for pressing an unbonded portion of the tape to the steel pipe to the outer surface of the steel pipe when the extra winding length is cut. apparatus. 3. The automatic tape winding device according to claim 1, wherein the frame is a vertically movable frame.