JPS59169620A - Continuous feeding device of coil - Google Patents

Abstract

PURPOSE:To prevent the suspension of a coil feeding line and to operate the following process continuously by supporting a coil, transferred to the inlet side of the coil feeding line, with the aid of a coil waiting device and joining the coil to a preceding coil while uncoiling the waiting coil alternately. CONSTITUTION:A coil 1' is continuously supplied to a waiting device 4 and a running joining-device 5 by a transferring device 3, and at the same time, a preceding strip and a succeeding one are edge-prepared and joined together by welding, without stopping the feeding line, by the device 5. Accordingly the following process is continuously operated without stopping the operation. Further, when detectors for detecting the amount of remaining coil and the position and passing of the strip are provided, a process, from the supply of coils to the joining of strips, can be perfectly automated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus capable of continuously supplying alternately sent coils while joining them.

An example of a case where coils are continuously supplied is in the manufacture of electric resistance welded pipes, and the coils as raw materials are continuously supplied while being joined in order to improve production efficiency and shorten the number of defective parts.

When joining these coils, it is necessary to cut off the poorly rolled portions of the terminal end of the previously supplied coil and the starting end of the coil to be supplied before joining.

Conventionally, as shown in Fig. 1, a cutting device 03't such as a crop shear is installed on the entrance side of the ERW pipe processing line, and the terminal end of the coil 06 beyond the coil holder 02 is cut off. When reaching the cutting position 03, the line is temporarily stopped and the line is cut and sent to the welding device 05 via the Rotz leveler 04 etc. At the same time, the starting end of the new coil 07 supplied to the coil holder 01 by the coil car O1 is also cut at this point. Cutting device 03
The process is carried out by cutting the parts at the machine and sending them to the welding device 05, which has the disadvantage that the processing line always needs to be stopped, resulting in a decrease in production efficiency and an increase in the number of defective parts due to the line stoppage.

SUMMARY OF THE INVENTION The present invention aims to eliminate such conventional drawbacks and provide a continuous coil supply device that can sequentially feed coils and join the coils while running them. The configuration of the present invention that achieves this object includes a coil timing device which is arranged in parallel in the front and back direction of the supply line on the inlet side of the coil supply line and supplies the coil while alternately winding it back, and a coil timing device which alternately transfers the coil to the coil timing IT. and a relay device that connects the coils while running, which are alternately supplied from the coil timing device.

Hereinafter, a detailed explanation will be given based on an embodiment in which a continuous coil supply device according to the present invention is applied to an electric resistance welded pipe manufacturing line. A coil pre-treatment device 2 pre-processes the coil 1, for example, cuts off a defective rolled portion, and the processed coil it-
A transfer device 3 that transfers to a predetermined position, a timing device 4 that alternately feeds the transferred coils 1 (i) and holds one coil 1 in the timing state, and a coil that is alternately fed l
The coil pre-treatment device 12, which may consist of a traveling intermediate device 5 which connects the leading strip and the trailing strip while traveling t'', is used to prevent premature heating of the coil 1 on which the compressed strip is wound. There is a device for cutting the outer peripheral end of the coil (t), and its structure is as shown in Figure 3.A pair of horizontal rollers (1) are rotatably mounted on a coil support (10) on which the coil (1) is placed. A drive source (not shown) is connected to one of the horizontal rollers 11, so that the coil l can be rolled.The base end of the arm 130 is mounted on the base 12, and At the same time, a hydraulic cylinder 14 for arm rotation is interposed between the base 12 and the center of the arm 13.Furthermore, at the tip of the arm 13, there is a coil drive roller that comes into contact with the outer periphery of the upper end of the coil l. 15 is attached and is driven by a roller drive motor 16 and a chain.

In addition, a pressing roller 17 for preventing the wiping coil from falling off is provided on the opposite side 111 of the arm 13 with the coil 1 in between.
A pedestal 12 is provided to be able to move up and down and move toward and away from the coil.
The base end portion of the pedestal 9 is pivotally attached, and is pivoted by a hydraulic cylinder 20 for rotating the pedestal interposed between the base 12 and the center portion of the pedestal 19. Further, inside the pedestal 19, a knife driving hydraulic cylinder 22 is provided at the tip of a knife 21i, which has a draft shape that can freely reciprocate in the tangential direction of the outer circumference of the coil l along the longitudinal direction of the pedestal 19. is assembled.

On the other hand, in the center of the arm 13, a strip fixing hydraulic cylinder 24 is attached downward, the strip fixing hydraulic cylinder 24 having a presser part 23 at its tip for fixing the outer peripheral end of the coil 1 to the pedestal 19. Further, a loss rail 25 is disposed on the arm 13 between the strip fixing hydraulic cylinder 24 and the coil drive roller 15, parallel to the axial direction of the coil I, and a rack 26 is disposed in parallel. A cutting machine 27 that reciprocates in the width direction of the coil l is attached to the cross rail 25, and a pinion 29 driven by a traveling motor 28 attached to the cutting machine 27 is engaged with the rack 26. The cutting machine 27 runs all the way. A plasma cutting torch 30 is attached to the cutting machine 27 so as to be movable up and down by a drive device 31, and a shower nozzle 32 for cooling is installed nearby.

Therefore, the coil It is placed on the coil support stand lO, and the arm 13t is rotated so that the coil driving row 915 comes into contact with it, and the pressing roller for preventing the coil from falling off! Coil l at 7
hold down. After that, the knife driving hydraulic cylinder 22 is activated to bring the tip of the peeling knife 21 into contact with the outer periphery of the coil l, and the pedestal rotating hydraulic cylinder 20 is pressed against the coil l. cylinder 2
The coil driving roller 151ki is moved to pull out the sound from the outer peripheral end of the coil 1 while stretching the coil 1 into an awn, and guides it to the peeling holder 19. After pulling out the outer peripheral end of the coil l for a predetermined length, the peeling knife 21 is pulled back and the strip fixing hydraulic cylinder 24tl is activated to fix the strip. After that, the plasma cutting torch 30 and the shower nozzle 32 are operated to cut the coil l in the width direction of the cutting machine '2.
7t-run and cut. Cut piece handling pedestal 1 after cutting
9 and fall into a chute (not shown).

The coil 1 that has been pretreated in this way needs to be transferred to a coil holder as a timing device 4 installed on the inlet side of the coil supply line, and a transfer device 3 is provided.

As the transfer device 3, a walking beam type conveyor 4o that combines vertical movement and feed movement, which is known to be suitable for transporting heavy objects, is installed perpendicular to the coil supply line, and this walking beam! ! I! A coil car 41 is installed on the exit side of the conveyor 400 to receive the coil lt and move between two coil holders 42 and 43 located at the front and back of the supply line so as to run on a rail. When the coil 1 on one side of the coil car 41 and the cane coil holder 42 runs out and the coil in the other coil holder 43 is supplied, the coil holder 42 that is missing is replenished with coils, and it moves back and forth alternately. I will have to return it.

In addition, the transfer device [3] is not limited to the one consisting of the walking beam type conveyor 40 shown in the figure and the coil car 41 that moves in a direction perpendicular to this, but also a combination of a roller conveyor and a coil car 41, or two orthogonal walking conveyors. It is also possible to use a beam type conveyor or a roller conveyor, and it is also possible to make the coil car self-propelled in all directions and to configure it only with a coil car, but the coil in the coil holder 43 at the rear of the supply line is used. It must be possible to supply a spare coil to the front coil holder 42 by using the lower side of this coil for making noise.

Next, as coil 1 is used, coil 1f is alternately:
Two fill holders 42 and 43 are installed at the front and rear in the same direction as the coil supply line, that is, the ERW tube manufacturing line, as the timing device 4 that supplies the coil and brings one of the coils into the timing state.
are installed in parallel. The coil holders 42 and 43 are provided with a mounting shaft 44 to which the coil 1 is mounted, and a drive mechanism 451 that rotates the mounting shaft 44 and rewinds the coil 17. In addition, between the two coil holders 42 and 43 and between the roller leveler 46 installed in front of the coil holder 42 and taking care of the winding of the fill l, and the coil holder 42, there is a groove (not shown) for guiding the coil 1. A guide is set up.

Next, a traveling type coil relay device 5 for joining strips sent alternately from the coil holders 42 and 43 without stopping the electric resistance welded tube manufacturing line will be described.

As shown in the side view in FIG. 4, this coil relay device 5 has two rails 50 laid between the roller repeller 46 and the ERW pipe forming yard for up to 8 meters. A traveling trolley 51 is placed thereon. Then, one axle is linked to a drive motor 52 built into the traveling truck 51, and the truck is driven. Incidentally, a rack may be laid parallel to the rail 50 and a pinion driven by a drive motor may be engaged with the rack so that the rack runs without slipping. A table 53 is provided at the bottom of the threading line on the entry side of the strip la of the traveling carriage 51 so as to be slidable in the front-rear direction, and a table driving hydraulic cylinder 54 mounted on the traveling carriage 51 side is provided below the table 53. are connected to move the table 53 in the front and back direction. This table 53 has a strip l.
There are two pairs of front and rear entry side guides 55 for guiding and positioning the side ends of a, and front and rear sides of the entry side guides 55 are provided with entry side clamp devices for vertically clamping and fixing the strip la. 56 is provided.

This entrance side clamp device 56 consists of a fixing part 56a provided on the table 53, a clamping cylinder 56b attached to a support frame 57 on the table 53, and a presser part 56c attached to the tip of the clamping cylinder 56b. There is. This table 5
A frame member 58 is provided on the front part D of 3 so as to be movable up and down, and a horizontal feed screw shaft 59 that is perpendicular to the feeding direction of 1 m of strip is attached to this frame member 58. A plurality of cutting torches 60 are screwed together at equal intervals as side cutting devices, and are moved in the width direction of the strip IB by a motor connected to the end of the feed screw shaft 59. Although the cutting torch 60 is provided on the table 53 side here, it may be provided on the traveling carriage 51 side.

On the other hand, two pairs of front and rear exit side guides 61 are also provided on the exit side of the strip 1m at the top of the traveling carriage 51, and move in the width direction of the strip la to guide and position the strip laO side end. There is a strip l
An output side clamp device 62 is provided for clamping and fixing a in the vertical direction. The exit side clamping device 62
Like the pump device 56, it is composed of a fixing part 62a, a clamping cylinder 62b, and a holding part 62c. Also,
A support frame 63 is provided on the rear side of the output side clamp device 62 of the traveling carriage 51 and is movable up and down, and a horizontal feed screw shaft 64 that is perpendicular to the feeding direction of the strip 1 is attached to this support frame 63. It is. A plurality of exit-side cutting torches 65 are screwed into the feed screw shaft 64 as an exit-side cutting device, and a welding torch 66 is provided near each of these cutting torches 65. The strip 1a is moved in the width direction of the strip 1a by a motor 67 connected to the end of the strip 1a.In addition, only the cutting torch 65 is shown in FIG. Although a torch is preferred, the use of gas cutting torches is also possible, while mechanical cutting devices may also be used.

On the other hand, while the traveling trolley 51 is running, it is necessary to support the strips la and lb at the front and rear of the traveling trolley 51. For this purpose, sprockets 68 are provided at both ends of the traveling range, and support rails are installed on both sides of the traveling range. , equipped with guide wheels running on support rails at both ends and a roller 69 in the center.
A chain 70 equipped with
It is moored at the front and rear of the ship. Therefore, roller tables are formed at the front and rear parts of the traveling carriage 51, respectively.

Next, the operation of the relay device configured as described above and the continuous supply of coils by the continuous coil supply device will be explained.

When the remaining coil l being supplied becomes less, this is detected, and in response to this detection signal, the feeding speed of the strip la is slowed down (for example, from 50 m/sequence to 20 vn/NR).

At this time, the relay device 5 is positioned at the starting end of the moving range, on the side of the claw 90 and the repeller 46, and the side guides 55, 61 and the flang devices 56, 62 on the entry and exit sides are in the released state. When the rear end of the strip la enters the relay device 5, the outlet side guide 61 operates to center the strip la, detects passage of the rear end at a certain position, and moves the strip la to the outlet clamp device 62. is activated and clamps the strip la in place. In this clamped state, the cutting portion is located at the cutting torch 65 on the exit side of the rear end portion of the leading strip la. Simultaneously with these two ramps, the traveling carriage 51 travels at the same speed as the feed speed of the strip la, which is reduced by the drive motor 52.

On the other hand, the coil l of the coil holder 42 in front of the timing device 4
When this is exhausted, the coil 1', which is attached to the rear coil holder 43 in which the tip of the strip is located near the roller leveler 46 and is in a waiting state, is further rewound and supplied at high speed as the trailing strip 1b. Catch up with the relay device 5 and enter the device. When this trailing strip 1b enters the device, it is detected, and this detection signal activates the side guide 55 on the entry side to center the trailing strip 1b so that the leading edge is located at the position where the leading edge is. When it comes in front of the cutting torch 60 on the entry side, it is detected and the entry side clamping device 56 is activated to cut the trailing strip l.
b is clamped.

After this, the leading strip 1a and the trailing strip l
Plasma cutting is performed using cutting torches 65 and 60, respectively, to form a groove necessary for bonding. This cutting is carried out using a plurality of cutting torches and is completed in a very short time. After the cutting is completed, the table 53 at the rear of the traveling carriage 51 is pushed forward, and the table 53 is pushed forward while being clamped by the entry side clamping device 56. The row strip lb is butt-welded to the preceding strip la so that it can be welded. When pushing out the trailing strip lb, the strip supply system including the coil holder 43, roller level 246, etc. is also operated to feed out the trailing strip lb.

Thereafter, the welding torch 66 welds the butt portion of the leading strip 1a and the trailing strip lb, but in the case of welding, as in the case of cutting, a plurality of (four in the illustrated example) welding torches are used to weld, so It can be completed in a short time. still,
As the welding method, plasma welding is preferable in terms of efficiency, but other welding methods can also be applied.

In this way, the leading strip la and the trailing strip lb are joined. During the joining operation and while the traveling carriage 51 is traveling, the strips la and lb are supported by roller tables before and after the traveling carriage 51.

After welding is completed, clamp devices 56.6 on the entry and exit sides.
2 and side guides 55 and 61 are released, and S) IJ
While the speed of the tube is increased to normal speed, the traveling carriage 51 returns to its original position and prepares for the next joining operation.

In addition, a new coil is supplied from the coil car 41 to the coil holder 42 in front of the timing device 4, and its tip is sent to the vicinity of the Rotz leveler 46, and when one of the coils runs out. The other coil is supplied, and the coils are connected together and supplied, so that continuous supply of coils is possible.

As described above, the pre-treatment device may be omitted by using a coil whose rolled portions have already been removed at the rolling and winding stage or the like.

As described above in detail with the embodiments, according to the present invention, it is possible to continuously supply coils to the timing device and the relay device using the transfer device, and the relay device also has a leading strip and a trailing strip. The strips can be processed and welded together without stopping the supply line, and post-process operations, such as the manufacture of electric resistance welded pipes, can be performed continuously without interruption. In addition, by equipping each with a detector that detects the remaining amount of coil and the position and passage of the IJ tube, it becomes possible to fully automate the process from supplying the coil to joining.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a conventional coil supply device, FIG. 2 is a perspective view showing a schematic configuration of an embodiment of the coil continuous supply device of the present invention, and FIG. 3 is a coil outer peripheral end cutting device. The front view, FIG. 4, and FIG. 5 are a 111 side view of the traveling type relay device and a full thickness view of the welding torch portion. In the drawing, 1, 1' are coils, la, lk) are leading and trailing blocks, 2 is a coil pretreatment device, 3 is a transfer device, 4 is a timing device, 5 is a running relay device, 40 is a walking device Beam type conveyor, 41 is a coil car, 42.43 is a coil holder, 46 is a roller leveler, 51 is a running cart, 53 is a table, 54 is a hydraulic cylinder for driving the table, 55.61 is a side guide on the bidding and exit side, 56. 6
2 is an entry side and an exit side clamp device, 60.65 is a cutting torch, and 66 is a welding torch. Patent applicant: Mitsubishi Industries, Ltd.

Claims (1)

[Claims] a coil timing device arranged in parallel in the front-rear direction of the supply line on the inlet side of the coil supply line and supplying the coil while alternately rewinding the coil in the center; a transfer device that alternately transfers the coil to the coil timing device; and the coil timing device. A continuous coil supply device characterized by comprising a relay device that joins coils alternately supplied from the coils while traveling.