JP2914882B2 - Coil welding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for forming a continuous coil by welding coils at a front position and a rear position in a coil transfer direction with respect to a coil wound with a strip-shaped metal strip. The present invention relates to a coil welding device.

[0002]

2. Description of the Related Art In general, a metal strip has a desired property and thickness by repeatedly performing rolling and heat treatment on a metal ingot, and is finally cut to a desired width by a slitter to change the width direction of the strip. It is a metal strip coil wound parallel to the center axis of the coil and aligned with the slit edge. The coil is subjected to various processings when used as a metal material. For example, there is a process of welding a plurality of coil strips to make the coil a continuous coil.

On the other hand, this type of coil is as large as 600 mm in the minimum diameter and as large as 1000 mm in the maximum diameter.
Since it can be as heavy as 0 to 300 kg, it is necessary to prepare a considerably large amount of wire for removing the rear end and front end of the coil during the welding process. In order to weld the coils located at the rear positions, it is necessary to take out the strips of both coils by a length that allows a certain amount of room, supply them to the welding device at a work height position where welding processing is easy, and once A certain length of the removed strip remains as a loop (sag) after the welding process. If this loop is not absorbed, the strip may be damaged by contact with other equipment, the floor surface, etc., or may be located at a rear position. There are various problems to be solved that the coil cannot be transferred.

However, no suitable welding apparatus for solving such problems has been found within the scope of the present inventor, and the present invention has been proposed in consideration of coil characteristics.

[0005]

Therefore, in the present invention, in order to weld the coils located at the front position and the rear position in the coil transfer direction, the strips of both coils are easily taken out with a certain margin. That the strips taken out from both sides are supplied to the welding device at the working height where the welding process is easy, and the remaining portions that become loops (slack) at a certain length of the strips once taken out are easily processed after the welding process. It is intended to provide a device which enables the absorption to be performed.

[0006]

SUMMARY OF THE INVENTION The present invention has been developed based on such a demand, and is intended to weld coils at a front position and a rear position in a coil transfer direction to form a continuous coil. As a coil welding device, the welding device body and the entrance and exit side guide devices arranged on the input side and the exit side of the welding device body, the whole is constituted, the welding device body has a shear, An upper unit having a welding machine and a rolling mill, arranged at a work surface height position in a work area, and capable of retreating from the work area when necessary, and a dryer having the upper unit from the work surface height position. A lower unit that is capable of ascending and positioning to the same position when leaving, and a carriage that allows the upper unit and the lower unit to leave the work area when necessary, and both the entrance side and the exit side guide device, Guide coil strip For those having each a pair of feed rolls which are freely exit from the height adjustable and when necessary guide zone in a horizontal state.

[0007] The welding apparatus main body and the entrance and exit side guide devices are respectively mounted on a carriage movable in a direction intersecting the coil transfer direction, and the carriage and a pair of feed rolls are connected to each other. By moving the coil in accordance with the inner and outer diameters of the coil, the position of the working area of the welding device main body and the position of the guide area of both the inlet and outlet guide devices can be adjusted.

Further, the shear of the upper unit cuts the ends of the strips of the coils located at the front position and the rear position to form a welding portion, and the welding machine welds and joins the welding portions of both the strips.
The rolling mill finishes both sides of the welded portions after welding, and the dryer of the lower unit dries the marker applied to indicate the welded portions.

The coil welding device includes a transfer device for transferring the rear position coil onto the front position coil by holding the coil and moving the coil forward, and a coil mounting device disposed in front of the delivery guide device. A winding device for winding the strip is disposed, and a predetermined amount of the loop of the coil strip behind the entrance guide device is absorbed by synchronously driving the feed rolls of the input and output guide devices and the winding device. Thereafter, the feed roll of the output side guide device and the winding device are synchronously driven to absorb a predetermined amount of the coil loop between the input and output side guide devices, and further, close to the transfer device. Along with moving the feed rolls of the input and output side guide devices, the transfer device, and the winding device synchronously while sequentially retracting the input and output side guide devices, the welding device main body is moved to the front position and the rear position. is there It is possible to absorb the strip of loop-yl each other.

[0010]

[Function] First, the coils are arranged at the front position and the rear position in the coil transfer direction with respect to the welding device main body, the coil of the rear position is through the entrance guide device, and the coil of the front position is the exit guide. It is guided and supplied to the welding equipment body via the equipment.

In both the entrance and exit guide devices, the feed rolls are positioned in advance in a horizontal state at a height position at which it is easy to guide the coil strip at the rear position and the coil strip at the front position. Of course, stiffness and other factors depending on the width, thickness, material properties, etc. of the strip differ depending on the coil, and the margin of the strip during welding work also changes accordingly, so at the optimal height position according to such conditions, The guide will guide the strip with or without pinching. At the time of welding work, in order to make these both inlet and outlet side guide devices serve as auxiliary guides, use with the feed roll open,
When the strip is fed after the welding operation, the strip is sandwiched, and both the entrance and exit guide devices are driven synchronously, or the feed roll of the exit guide device is driven alone.

[0012] Positioning of the working area of the welding device body and the entry side
The positioning of the guide area of both the outgoing side guide devices means that the bogie of the welding device main body and the feed rolls of the ingoing and outgoing side guide devices are intersected with the coil transfer direction according to the inner and outer diameters of the coil. By moving each of them, adjustment is made in advance.

When the upper unit having the shear, the welding machine and the rolling mill is arranged at the work surface height position in the work area and kept in a standby state, the welding device main body supplies the removed parts of both strips to the work unit. First, the ends of the strips of the coils located at the front position and the rear position are cut by the shear of the upper unit to form a welded portion. Next, the welding portions of both strips are welded and joined by a welding machine. Then, both sides of the welded portions after the welding are finished with a rolling mill. When the work of the upper unit is completed in this way, the upper unit is withdrawn from the work area, and the lower unit is then moved upward to the position where the upper unit was, and then the dryer is used to indicate the welding site in advance. The applied marker is dried.

In the welding process as described above, the strip is taken out to a certain length and is processed. However, once the welding process is completed, the coil at the rear position is left in the connected position while being kept connected. It is necessary to transfer so that the coils are stacked on each other. In this transfer, it is necessary to absorb the loop between the strips. Therefore, in the case of the welding equipment main body, the lower unit is lowered and then the bogie is moved together with the upper unit and the lower unit to withdraw the welding equipment main body from the work area to a position where it does not hinder coil transfer. Let it. Next, the feed rolls of both the entrance and exit guide devices are synchronously driven to take a loop of a strip corresponding to a position in front of the entrance guide device, and then the feed roll of the exit guide device is driven to enter the entrance side. -Take a loop between the two guide devices on the exit side, that is, a portion of the loop corresponding to the work area where the welding device body was originally located.

Then, an appropriate transfer device (for example, a transfer device that moves the coil in a horizontal state while suspending the coil in a horizontal state with a vacuum pad) is operated, and the coil at the rear position is replaced with the coil at the front position. Transfer in the direction. Then, as the transfer device moves, the feed roller of the entrance guide device is opened to make the strip free, and then the entrance guide device is withdrawn from the guide area which is an area that interferes with the movement of the transfer device. Let it. At this time, since the feed roll of the delivery guide device is driven in synchronization with the moving speed of the transfer device, the strips are sequentially fed without remaining there. Then, as the transfer device further moves, the feed roll of the output guide device is also opened to release the strip, and then the output guide device is retracted from the guide area. The transfer process can be continued so that the coil can be moved closer to the coil at the front position to perform the stacking process.

The strip loop located at a position forward of the exit side guide device is wound up and absorbed by combining an appropriate device, for example, a similar guide device or the like.

[0017]

An embodiment will be described below with reference to the drawings. The coil welding device is mainly composed of a welding device main body 1 and an entrance guide device 2 and an exit guide device 3 arranged on the entrance and exit sides thereof. In the above and below, FIG.
In FIG. 2, the front and rear directions are indicated by arrows X with the right side being “front” and the left sides being “rear”, and the upper and lower sides are indicated by arrow Z in FIG. In FIG. 2, the lower side is referred to as “right” and the upper side is referred to as “left”, and the horizontal direction is indicated by an arrow Y.

Hereinafter, each of the main components will be described in sequence.

Regarding the welding apparatus main body 1:

The main body 1 of the welding apparatus includes a base 4 in which frames are assembled in a rectangular shape so as to extend in the Y direction.
A trolley 5 of a frame structure capable of moving forward and backward in the direction;
An upper unit 6 and a lower unit 7 provided on the cart 5 are provided. A pair of rails 8 are provided on the base 4 in the Y direction, and a motor 9 is provided at one end of the base 4.
The motor 9 is connected via a belt 13 and a chain 12 wound around a pair of left and right sprockets 10 and 11 provided on the side surface of the motor. The carriage 5 has guide bearings 14 engaged with the rails 8 at four locations on the lower surface and connected to the chain 12 so that the entire carriage 5 can move forward and backward in the Y direction by the rotational force of the motor 9. is there. A pair of guide rails 15 is provided on the upper part of the carriage 5 in the Y direction.
A pair of other guide rails 16 are provided on the right side in the Z direction.

In the upper unit 6, a plate 18 is arranged on a square base 17 mounted on a guide rail 15 via a guide bearing (not shown), and a shear 19, a welding machine 20, a rolling mill 21 , Respectively, and can be moved forward and backward in the Y direction by the operation of a pressure cylinder (not shown) as a whole. That is, in the state of moving to the right in FIG. 3, the mounted equipment is positioned at the work surface height H in the work area S, and when the welding work is completed, the work area S is moved to the left in FIG. It is a retreat.

The shear 19 cuts ends of the strip f of the coil F located at the front position and the strip r of the coil R located at the rear position prior to welding, and forms welding portions thereat. is there. Further, the welding machine 20 performs, for example, butt welding and joining of the welding portions of both the strips f and r, and the rolling machine 21 performs a finishing process by rolling both surfaces of the welding portions after welding. is there. Known devices can be used for the shear 19, the welding machine 20, and the rolling mill 21.

The lower unit 7 has a plate 23 disposed on a base 22 and a dryer 24 mounted thereon, and is for drying a marker previously applied to indicate a welding position. The base 22 is engaged with the guide rail 16 in the Z direction via a guide bearing (not shown) and connected to a pressure cylinder 26 via a connection arm 25. After the welding process is completed, the upper unit 6 is moved in the horizontal direction. Upon retreating, it is raised and positioned in the work area S at the work surface height H. When the drying process is completed, it returns and descends,
When the carriage 5 retreats to the left, the carriage 5 retreats from the work area S together. In addition, 27 is a hot air fan, and a cart 5
And supplies the dryer 24 with dry air for drying the marker.

The entrance guide device 2 and the exit guide device 3
And:

The entrance-side guide device 2 and the exit-side guide device 3 have the same structure and are disposed on the entrance side and the exit side of the welding device main body 1. In the following description, the entrance-side guide device 2 will be described. And only the same reference numerals will be given to the corresponding portions of the exit-side guide device 3, and redundant description will be omitted.

The entrance guide device 2 has a pair of rails 31 arranged on a base 30 extending in the Y direction.
2, a pair of sprockets 33 and 34, and a chain 35 wound around the sprockets. A base plate 36 is mounted on the rail 31 via a guide bearing (not shown), and a chain 35 and a base plate 36 are connected to each other. The rotational force of the motor 32 causes the base plate 36 to move forward and backward in the Y direction together with the equipment mounted thereon. There is freely. In FIG. 5, the left side is the guide area G, which is also an area that interferes with the movement of the transfer device (not shown). If necessary processing is completed, the base plate 36 moves to the right in FIG. It retreats to the state shown by the imaginary line.
The guide area G is determined by setting an optimum position in the Y direction in advance in accordance with the inner and outer diameters of the coil to be guided.

A support 37 and a pair of guide bars 38 are erected on the base plate 36. A motor 39 is provided above the support 37 and a pair of sprockets 40 and 41 are provided above and below the guide bar 38. Sprocket 40,
A chain 42 is wound around 41. Further, a vertically moving plate 43 is combined with the guide bar 38 and connected to the chain 42 so as to be vertically moved by the rotation force of the motor 39.

An upper clamp roll 44 and a lower drive roll 45 are arranged in a pair on the vertical movement plate 43 in a horizontal state, and constitute a "feed roll". Furthermore, a pair of vertical rolls 46
Is provided. The upper clamp roll 44 is connected to the upper / lower plate 43 and the opening / closing cylinder 47 so that the base end of the shaft is freely rotatable. On the other hand, the lower drive roll 45 has a shaft base end connected to a motor 48. The upper clamp roll 44, together with the lower drive roll 45 at the time of closing, is in a state of sandwiching the strip r, and when opened, becomes a guide state for passing the strip r, and can further remove the strip r therefrom to be in a free state. It is. Also, the upper clamp roll 44
The other pressure cylinder 49 for adjusting the position is arranged such that the whole is in the upper position when opened and the whole is in the lower position when closed. The vertical rolls 46 pass the strips r therebetween, thereby preventing the meandering of the strips r and preventing loss from the “feed roll”.

Next, the use state of the coil welding apparatus will be described.

First, as shown in FIG. 1, in a state where the coil R at the rear position is disposed on the entrance side and the coil F at the front position on the exit side, the coil R at the rear position and the coil R at the front position are arranged prior to the welding process. The strips r and f are taken out from both of the coils F at a given length with an arbitrary length margin. At this time, the "feed rolls" of both the entrance-side and exit-side guide devices 2, 3 are used only for guiding, With the upper clamp roll 44 open,
The lower drive roll 45 is not driven. Accordingly, the strip r is on the lower drive roll 45, which is the “feed roll” of the entrance guide device 2, and the one strip f is on the lower drive roll 45, which is the “feed roll” of the output guide device 3. It is guided and moved to the welding apparatus main body 1. Each end of the strips r and f is cut by a shear 19 in the upper unit 6 of the welding apparatus main body 1 to form a welded portion, and both are welded and joined by a welding machine 20, and then a rolling mill A finishing process is performed at 21, and a welded / joined portion is indicated by a marker (marking process). When the welding process is completed, the upper unit 6 is retreated to the left in FIG. 3 to open the work surface height H of the work area S. Subsequently, the lower unit 7 is raised and positioned at the work surface height H, and the marker is dried.

The above welding process, marking process,
Until the drying process is completed, the upper clamp rolls 44 of both the entrance and exit guide devices 2 and 3 are kept open to ensure the easiness of each operation. The strip f can be moved on the carriage 5.
When the drying process is completed, the lower unit 7 is returned and lowered, and the carriage 5 is moved to the left in FIG. 3 to move both the upper unit 6 and the lower unit 7 out of the work area S. Removal of the loop of the wire f and the coil R in the rear position
In such a manner as to be moved closer to the coil F at the front position.

By the way, in order to perform the above-mentioned welding and drying processes, the strips r and f, which are taken out from both the coil R at the rear position and the coil F at the front position to arbitrary lengths, respectively, With the “feed roll” and the “feed roll” of the exit guide device 3 passed through, the loop 50
51 will be left. To transfer the coil R at the rear position so as to be closer to the coil F at the front position, the welded and connected strips r and f are sent forward along with the movement of the coil R to absorb the loops 50 and 51. It is necessary to continue.

Then, the upper clamp rolls 44 of the entrance-side guide device 2 and the exit-side guide device 3 are respectively closed, and the "feed roll"
Is operated to feed the connected strips r and f forward to absorb the loops 50 and 51. At first, the feed rolls of the entrance-side and exit-side guide devices 2 and 3 are synchronously driven to take a certain amount of a loop 50 behind (front of) the entrance-side guide device 2, and a loop 51 between the guide devices 2 and 3 is formed. Take it to some extent (send it forward from the exit guide device 3 and wind it up with another appropriate device). Next, the exit guide device 3 is driven (synchronously driven with another appropriate device disposed in front of the exit guide device 3), and the loop 51 between the guide devices 2 and 3 is set to a certain extent. At this time, the entrance guide device 2 is in an idle state.

Then, an appropriate transfer device (for example, a transfer device which moves horizontally in a horizontal direction while suspending the coil in a horizontal state with a vacuum pad) is operated, and the coil R at the rear position is moved to the coil F at the front position. , The "feed rolls" of the entrance-side guide device 2 and the exit-side guide device 3 are synchronously driven in accordance with the moving speed of the transfer device (in this case, of course, forward from the exit-side guide device 3). Are also driven synchronously), and the connected strips r and f are sent forward from the outlet guide device 3 and wound up by other appropriate devices.

Then, as the transfer device moves further forward, the entrance guide device 2 is withdrawn from the work area S before interference. After this, the "feed roll" of the delivery guide device 3 is also driven (the other appropriate devices disposed in front of the delivery guide device 3 are also driven synchronously), so the coil R at the rear position and the delivery guide device 3 are driven. And the loop 51 remaining between them. Further, when the transfer device approaches the output-side guide device 3, the output-side guide device 3 is retracted from the work area S similarly to the input-side guide device 2, and the transfer device is allowed to move forward.

In the above-described processing, in order to absorb the loop 52 in front of the delivery guide device 3, other devices (for example, a “feed roll” or a “winding roll” similar to the delivery guide device 3) may be used. Turntable device ”) is used in combination, but the description thereof will be omitted.

[0037]

As described above, according to the coil welding apparatus of the present invention, each of the strips is formed by the entrance guide apparatus and the exit guide apparatus whose positions have been adjusted in advance in the guide area corresponding to the inner and outer diameters of the coil. Since it can be guided, it becomes easy to take out the strip from the coils located at the front position and the rear position in the coil transfer direction at an arbitrary length, and since the upper unit of the welding device main body is at the work surface height position in advance, there is It is easy to weld and join the strips taken out, and it is also easy to perform the drying process by retracting the upper unit, positioning the lower unit at the work surface height position, and completing the welding process. Later, a certain length of the strip forms a loop (slack) and the remaining portion can be absorbed by the inlet side guide device and the outlet side guide device. Moth Since the loading device and the exit-side guide device are each capable of retreating, it is expected that the operation of transferring the coil at the position after the continuous coil to the coil at the previous position can be performed extremely efficiently. .

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an entire coil welding apparatus according to the present invention.

FIG. 2 is a schematic plan view showing the entire coil welding device according to the present invention.

FIG. 3 is a side view of the welding device main body as viewed from the direction of arrows III-III in FIG. 2;

FIG. 4 is a partial side view showing a state where the lower unit according to the present invention is positioned at a work surface height position.

FIG. 5 is a side view of the entry-side guide device as viewed from a direction indicated by arrows VV in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Welding apparatus main body 2 Inlet guide apparatus 3 Outlet guide apparatus 4 Base 6 Upper unit 7 Lower unit S Work area 19 Shear 20 Welder 21 Rolling machine 24 Dryer 44 Upper clamp roll (feed roll) 45 Lower drive roll ( Feed roll) H Work surface height position G Guide area R Rear position coil r Rear position coil line F Front position coil f Front position coil line 50 loop 51 loop 52 loop

──────────────────────────────────────────────────続 き Continuing from the front page (72) Keiichi Muraoka, Inventor Keiichi Muraoka 3 Kurami Plant, Samukawa-cho, Koza-gun, Kanagawa Prefecture, Japan Nippon Mining & Metals Co., Ltd. (56) References JP-A-2-52199 (JP, A) JP-A-59-199189 (JP, A) JP-A-48-65132 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) B23K 37/04 B21B 15/00 B21C 47/26 B23K 9/025

Claims (4)

(57) [Claims] 1. A coil welding device for welding coils located at a front position and a rear position in a coil transfer direction to perform a continuous coiling process, comprising: a welding device main body and an input side of the welding device main body. And a guide device arranged on the output side, the welding device body having a shear, a welding machine, and a rolling mill, being arranged at a work surface height position in a work area and performing work when necessary. An upper unit that is capable of exiting from the area, a lower unit that has a dryer and that is capable of ascending and positioning to the same position when the upper unit exits from the work surface height position, and an upper unit and a lower unit And a bogie for retreating from the working area when necessary, and both the entrance and exit side guide devices are capable of adjusting the height position in a horizontal state to guide the coil strips and retreating from the guide area when necessary. A pair of feed rows Coil welding equipment, each of which is provided with a coil. 2. A welding apparatus main body and both an entrance side and an exit side guide device are respectively mounted on a carriage movable in a direction intersecting a coil transfer direction, and the carriage and a pair of feed rolls are connected to each other. The coil welding according to claim 1, wherein the position of the working area of the welding device main body and the position of the guide area of both the entrance and exit guide devices are freely adjustable by moving the coil in accordance with the inner and outer diameters of the coil. apparatus. 3. The shear of the upper unit cuts the ends of the strips of the coils located at the front position and the rear position to form a welding portion, and the welding machine welds and joins the welding portions of both the strips. 3. The rolling mill finishes both surfaces of the welded parts after welding, and the dryer of the lower unit dries a marker applied to indicate the welded part. Coil welding equipment. 4. A transfer device for transferring a rear position coil onto a front position coil by holding a coil and moving forward, and a winding device disposed in front of an output side guide device for winding a coil strip. After a predetermined amount of coil loops behind the entrance-side guide device is absorbed by synchronously driving the feed rolls of the entrance-side and exit-side guide devices and the winding device, the exit-side guide device By driving the feed roll and the winding device synchronously, a predetermined amount of coil loops between the input and output side guide devices are absorbed, and furthermore, the input and output side guides are brought close to the transfer device. By sequentially driving the feed rolls of the input / output guide devices and the transfer device and the winding device while retracting the device, the coil loops at the front position and the rear position of the welding device main body are synchronously driven. Absorb Claim was so that 1-3
The coil welding device according to any one of claims 1 to 7.