JP3553265B2 - Cutting machine in ERW steel pipe production line - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a running cutting machine in an electric resistance welded steel pipe manufacturing line that can be manufactured at low cost and can give a degree of freedom to a cutting shape of a strip material.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an ERW steel pipe production line in which a strip material is formed into a tubular shape and both ends thereof are welded and welded to each other is disclosed in Japanese Patent Application Laid-Open No. 60-170582.
As shown in FIG. 9, the ERW steel pipe manufacturing line L1 includes a rewinding supply device 101 for the entry side strip material 100, a strip material splicing welding machine 102, a strip material accumulation device 103, and a forming roll group 104. , An electric resistance welding device 105, an inner bead cutting device 106, a post annealing device 107, and a traveling pipe cutting machine 108.
[0003]
Here, the strip material joining welder 102 is for connecting the end of the preceding unit strip material 100 in the longitudinal direction to the end of the subsequent unit strip material 100 in the longitudinal direction to make it continuous. In addition, the strip material filling device 103 can supply the necessary amount of the strip material 100 to continuously continue the subsequent forming and welding operations even during the seam welding operation by the strip material seam welding machine 102. The forming roll group 104 is for forming the strip material 100 into a tube, and the ERW welding device 105 is for performing ERW welding on the strip material 100 formed into a tube. The inner bead cutting device 106 is for cutting and removing the inner burr of the ERW weld, and the post annealing device 107 is for softening and annealing the ERW weld. And than, running pipe cutter 108 is used to cut the electric resistance welded steel pipe coming continuously produced product steel tube 110 of fixed length.
With this configuration, the ERW steel pipe can be continuously formed without stopping the line, and the product yield can be improved.
[0004]
Further, as shown in FIG. 9, the above-described ERW steel pipe manufacturing line L1 further includes a running cutting machine 111 which can cut and separate the running strip material 100 behind the strip material storage device 103. Have.
[0005]
Therefore, when it is determined that the line must be stopped for reasons such as a tool change of the inner bead cutting device 106, the strip material 100 is cut / separated using the running cutting machine 111, and the upstream strip material 100 is The strip material 100 on the downstream side can be passed through the forming roll group 104 and the electric resistance welding device 105 as it is, and can be made into the product steel pipe 110 as it is. In this case, since there is no material at the position of the inner surface bead cutting device 106, a tool changing operation can be easily performed, and since there is no material at the position of the post-annealer device 107, a steel pipe of poor quality is removed. The production yield can be further improved without manufacturing. Generally, a plurality of fixed rolls that support the strip material 100 are disposed in a traveling zone in the line direction of the inter-cutting machine 111.
[0006]
[Problems to be solved by the invention]
However, the running cutting machine 111 in the above-described ERW steel pipe production line L1 still has the following problems to be solved.
That is, as shown in FIG. 9, the conventional running cutter 111 includes a rotary drum type shear having upper and lower rotating drums 112 and 113 and a crank motion type shear, each having a cutting blade attached to its peripheral surface. Have been.
Since such a running cutter 111 cuts the strip material 100 by mechanical shearing force, it requires extremely high rigidity, so that the so-called physique is inevitably increased, and the manufacturing cost is increased. In addition, a large installation space is required.
Further, since the running cutting machine 111 performs cutting by a cutting blade, there is no degree of freedom in the cutting shape.
[0007]
The present invention has been made in view of such circumstances, and provides a running cutting machine in an electric resistance welded steel pipe production line that can be manufactured at low cost and that can give a degree of freedom to a cutting shape of a strip material. With the goal.
[0008]
[Means for Solving the Problems]
The running cutting machine in the electric resistance welded steel pipe production line according to claim 1 is arranged in front of the forming roll group and behind the strip material storing device to cut and separate the running strip material. A traveling cutting machine in an electric resistance welded steel pipe production line, comprising: a bogie that moves in synchronization with the strip material; and a traverse mounted on the bogie and orthogonal to a flow direction of the strip material. And a fusing device movable in the direction.
[0009]
A continuous cutting machine in the electric resistance welded steel pipe production line according to claim 2, wherein the continuous cutting machine in the electric resistance welded steel pipe production line according to claim 1 is a series of endless chain conveyors before and after the line direction of the continuous electric cutting machine. A part of the endless chain conveyor is connected so that the drive sprocket of the endless chain conveyor is connected to a drive motor via a clutch, and the drive motor causes the carriage to travel in a line direction via the conveyor. , And a clamp device capable of detachably clamping the strip material is mounted on the carriage, and a plurality of support rolls are provided to the endless chain conveyor.
[0010]
The running cutting machine in the electric resistance welded steel pipe manufacturing line according to claim 3 is the running cutting machine in the electric resistance welded steel pipe manufacturing line according to claim 1, wherein the fusing device mounted on the bogie is used for cutting the strip material. It is configured to be able to advance and retreat not only in the transverse direction orthogonal to the flow direction but also in the same direction as the flow direction of the strip material.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
As shown in FIG. 1, a running cutting machine 10 according to an embodiment of the present invention includes a front pinch roller device 12 provided downstream of an unillustrated strip material storage device in an electric resistance welded steel pipe production line 11. And a rear pinch roller device 13 provided upstream of a forming roller group (not shown).
As shown in FIG. 1, the cutting machine 10 includes an endless chain conveyor 15 arranged substantially in the direction of the flow of the strip material 14 and a part of an upper conveying surface of the endless chain conveyor 15. , And a fusing device 17 and a clamp device 56 attached to the trolley 16.
In FIG. 1, reference numeral 12a denotes a strip material guide table interposed between the front pinch roller device 12 and the running cutter 10.
[0012]
Next, with reference to FIGS. 1 to 4, the configuration of each part of the running cutter 10 having the above configuration will be specifically described.
First, endless rails 21 composed of channels having orbital portions at both ends are attached to both sides of a long conveyor frame 20 constituting the main body of the endless chain conveyor 15 along the outer peripheral surface. . On each endless rail 21, an endless chain 22 is movably wound along the endless rail 21. A base frame 23 of the carriage 16 described below is attached to a part of the endless chain 22.
As shown in FIGS. 1 and 4, a plurality of strip support rollers 18 and a plurality of strip support tables 19 are attached to each endless chain 22 at predetermined intervals in the longitudinal direction. A strip material support surface is formed on the upper surface.
As shown in FIG. 4, the strip material support table 19 has an inclined surface that is inclined upward in the moving direction of the strip material 14.
[0013]
As shown in FIG. 1, the endless chain conveyor 15 has a driving sprocket 24 at the front end of the conveyor frame 20 and a driven sprocket 25 at the rear end of the conveyor frame 20. As shown in FIG. 5, a bogie traveling motor 29, which is an example of a driving motor, is interlocked to one end of a rotating shaft 26 to which the driving sprocket 24 is fixed, via a clutch 27 and an intermediate shaft 28.
[0014]
Next, the bogie 16 on which the fusing device 17 and the clamp device 56 are mounted will be described with reference to FIGS.
As shown in FIGS. 2 and 3, bogie rails 30 are installed on the floor along both sides of the endless chain conveyor 15. On the rail 30 for the carriage, two pairs of wheels 31, 32 mounted on both sides of the front and rear ends of the base frame 23 of the carriage 16 laid over the endless chain conveyor 15 are rollably supported. ing.
The two ends of the endless chain 22 of the endless chain conveyor 15 are connected to brackets 33a, 34a on horizontal frames 33, 34 provided at the front and rear ends of the base frame 23 of the carriage 16, respectively.
On the upper surfaces of the front and rear ends of the base frame 23, strip material support rollers 35 and 36 are supported in a state of being urged upward by springs 37 and 38, respectively. The upper surface of the strip 36 is set at the same height as the running level of the strip 14 and is slightly lower than the running level of the strip 14 when the strip 14 is clamped by the clamping device 56 as described later. ing.
[0015]
Next, the fusing device 17 mounted on the trolley 16 will be described with reference to FIGS.
As shown in FIGS. 2 to 4, legs 39 and 40 are erected on the upper surfaces on both sides of the center of the cart 16, and a thick long rectangular plate is provided between the legs 39 and 40. A fusing device mounting plate 41 is installed, and the fusing device 17 is mounted on the front surface of the fusing device mounting plate 41 so as to be able to traverse.
[0016]
That is, a horizontal rack 42 is mounted over the entire length at the center of the front surface of the fusing device mounting plate 41, and the upper and lower horizontal racks 42 are vertically spaced apart from each other vertically. Guide and support rails 43, 44 are mounted.
A support base 45 forming a part of the fusing device 17 is disposed in a state facing the front surface of the fusing device mounting plate 41, and sliding support members 46 and 47 provided on the lower surface and upper surface of the fusing device 17 are disposed. By slidably fitting the upper and lower horizontal guide and support rails 43 and 44, the support base 45 can be mounted on the fusing device mounting plate 41 so as to be able to traverse.
[0017]
As shown in FIGS. 2 and 4, a bracket 48 is attached to one side of the support base 45, and a fusing device traversing motor 49 is attached to the bracket 48. A drive-side gear 50 is fixed to the output shaft of the fusing device traversing motor 49. The drive-side gear 50 is engaged with a pinion gear 51 rotatably mounted on the bracket 48, and the pinion gear 51 is attached to the fusing device. It is engaged with a horizontal rack 42 provided on the front surface of the plate 41.
With this configuration, by driving the fusing device traversing motor 49, the support base 45 can be traversed in the width direction of the strip material 14, as shown in FIG.
[0018]
As shown in FIGS. 2 to 4, an elevating frame 52 is attached to the lower part of the front surface of the support base 45 so as to be able to move up and down, and the upper end of the elevating frame 52 is similarly fixed to the upper part of the front surface of the support base 45. The lifting cylinder 53 is connected to the end of a telescopic rod.
A copying roller 54 that is in contact with the upper surface of the strip member 14 is attached to a lower portion of the lifting frame 52. In addition, a plasma torch 55 constituting a main part of the fusing device 17 is attached to one side of the lifting frame 52.
As shown in FIG. 4, in the present embodiment, the copying roller 54 is disposed on the downstream side of the plasma torch 55, and the tip of the copying roller 54 projects slightly below the tip of the plasma torch 55. . Therefore, when the lifting / lowering cylinder 53 is driven to lower the lifting / lowering frame 52, the tip of the copying roller 54 comes into contact with the upper surface of the strip material 14, and a good fusing between the plasma torch 55 and the strip material 14 occurs. A predetermined gap required for the above can be secured.
[0019]
A water tank 55a is attached to a portion on the base frame 23 of the carriage 16 and directly below the plasma torch 55.
Therefore, as described later, fusing debris, so-called dross, generated when the strip material 14 is blown off by the plasma torch 55 can be dropped into the water tank 55a, and the dross can be reliably prevented from scattering outside. In addition, since dross can be immersed in water before it emits smoke, smoking can be prevented as much as possible. Further, the cutting by the plasma torch 55 can be performed quietly.
[0020]
Although one fusing device 17 may be provided, in the present embodiment, as shown in FIGS. 2 and 3, two fusing device mounting plates 41 are provided. The fusing time can be reduced by fusing the material 14 by half.
[0021]
Next, the clamp device 56 mounted on the carriage 16 will be specifically described with reference to FIGS. 1 to 4, particularly, FIGS. 2 to 4.
As shown in FIGS. 2 and 4, a space 57 formed between the lower surface of the fusing device mounting plate 41 and the endless chain conveyor 15 has a length substantially equal to the width of the strip material 14, and A movable clamp plate 58 having a necessary and sufficient width to clamp the member 14 is provided.
[0022]
On the other hand, as shown in FIGS. 2 and 4, a plurality of elevating cylinders 59 and elevating guides 60 are mounted on the back surface of the fusing device mounting plate 41 at intervals in the width direction. The rod end is connected to the upper surface of the movable clamp plate 58.
As shown in FIG. 4, a fixed clamp plate 61 is attached to the upper surface of the center portion of the base frame 23 of the carriage 16 so as to be aligned with the movable clamp plate 58 in the upward and downward directions.
Therefore, the strip material 14 can be strongly clamped by the movable clamp plate 58 and the fixed clamp plate 61 by driving the lift cylinder 59 to lower the movable clamp plate 58.
[0023]
The other configuration of the cutting machine 10 in the illustrated embodiment will be described. In FIG. 4, reference numeral 62 in FIG. 4 is for ensuring the supply of the strip material 14 into the cutting machine 10 from the strip insertion device side. It is a guide frame.
[0024]
Next, the operation of the running cutter 10 having the above-described configuration will be described with reference to FIGS. 1 to 5 and 6.
In the ERW pipe manufacturing line 11 in which the strip material 14 flows continuously, when the line needs to be stopped due to the deterioration life of an inner bead cutting tool (not shown), the bogie traveling motor 29 is driven. Then, the endless chain conveyor 15 is operated. By this operation, the bogie 16 integrated with the endless chain conveyor 15 is moved forward (left side in FIG. 1) from the position shown by the solid line in FIG. At this time, since the clutch 27 is on, the rotating shaft 26 to which the driving sprocket 24 is fixed and the bogie traveling motor 29 are interlocked.
[0025]
When the traveling speed of the carriage 16 becomes substantially equal to the passing speed of the strip material 14, the lifting cylinder 59 constituting the clamp device 56 is driven to move the strip material 14 to the movable clamp plate 58 and the fixed clamp plate 61. , And then the clutch 27 is turned off. By this operation, the interlocking connection between the endless chain conveyor 15 and the carriage traveling motor 29 is cut off, and the carriage 16 is in a free state, while being connected to the strip member 14 by the clamp device 56. Therefore, the carriage 16 is synchronously driven while being pulled by the strip material 14.
[0026]
Thereafter, the elevating cylinder 53 is driven to lower the plasma torch 55. Following this lowering, the copying roller 54 also lowers integrally and comes into contact with the upper surface of the strip material 14. At this time, since the copying roller 54 protrudes downward by a predetermined distance from the plasma torch 55, a gap required for fusing by the plasma torch 55 can be formed between the tip of the plasma torch 55 and the strip material 14. .
Next, the two fusing devices 17 arranged as shown in FIG. 2 are simultaneously moved in the same direction (left direction in FIG. 2) by driving the fusing device traversing motor 49, and the plasma torch 55 To start the fusing operation of the strip material 14.
[0027]
When the cutting of the strip material 14 by the plasma torch 55 is completed, as shown in FIG. 6A, the upstream strip material 14 whose tip is clamped no longer receives the traction force from the downstream strip material 14. Stop on the spot. On the other hand, the strip material 14 on the downstream side passes through a forming roll group and an electric resistance welding device (not shown) as it is to become a product. At this time, since the strip member 14 does not exist at the position of the not-shown inner bead device disposed downstream of the running cutting machine 10, the tool can be easily replaced, and the position of the post-annealer device not shown Also, since the strip member 14 does not exist, the production of a steel pipe of poor quality can be prevented.
[0028]
Further, after the above-mentioned strip material 14 is melted, the lifting cylinder 59 is actuated to move up the movable clamp plate 58 to release the clamping of the strip material 14, and then the clutch 27 is turned on to fix the driving sprocket 24. After the rotating shaft 26 and the truck traveling motor 29 are linked and connected, the truck traveling motor 29 is driven to retreat the truck 16 on which the fusing device 17 and the clamp device 56 are mounted by a predetermined distance. In this retracted position, the bogie 16 is moved back and forth by driving the bogie traveling motor 29, and the fusing device mounting plate 41 is traversed by driving the fusing device traversing motor 49, whereby the plasma torch 55 is moved back and forth and left and right. The strip material 14 can be moved two-dimensionally, that is, zigzag, and the upstream strip material 14 can be cut so that notches 14a to 14c are formed at the center and both ends of the distal end, respectively. By cutting the strip material 14 on the upstream side in a zigzag manner as described above, when the strip material 14 is formed by a group of forming rolls (not shown), the ears and the center of the strip material 14 are prevented from being deformed. Thus, the workability of the strip material 14 can be improved. Note that the dissolved fragments 14d are discarded.
[0029]
Further, FIG. 7 shows a case where, during the passing of the strip material in the ERW steel pipe manufacturing line 11, the so-called strip materials 114, 115 having different thicknesses and widths are changed (FIG. 7A). 2) shows the method of fusing the strip material.
In this case, the downstream strip material 114 located downstream of the set change point S is first blown by the fusing device 17 in the same procedure as that shown in FIG. 6 as shown in FIG. Then, by driving the bogie traveling motor 29, the bogie 16 on which the fusing device 17 and the clamp device 56 are mounted is retracted by a predetermined distance, and thereafter, the bogie 16 is moved back and forth, and the fusing device traverse motor 49 is driven. By traversing the fusing device mounting plate 41, notch portions 115a to 115c can be formed at the center and both ends of the tip of the upstream strip material 115 located on the upstream side of the set change point S, respectively. Workability when forming the strip material 115 by a forming roll group (not shown) can be improved. Note that the dissolved fragment 115d is discarded.
[0030]
Further, in the present embodiment, a cutting device 17 composed of a plasma torch 55 is used instead of the conventional shear type cutting machine using a mechanical shearing force to cut the strip members 14, 114, 115. Since the running cutting machine 10 provided is used, it is not necessary to increase the rigidity of the running cutting machine 10, and the running cutting machine 10 in the ERW steel pipe production line 11 can be manufactured at low cost.
[0031]
In the present embodiment, the carriage 16 is once synchronized with the strip members 14, 114, and 115 at the same speed, and then the strip members 14, 114, and 115 are clamped. The fusing device 17 can be run in synchronization with the strip members 14, 114, 115 without giving an impact to the strip members 14, 114, 115 and the fusing device 17.
[0032]
Further, depending on the thickness, the plate width, and the cutting method of the strip material 14, the time required for cutting may be long, but in the present embodiment, as shown in FIG. Since a strip material support surface having a sufficient length can be formed, and the strip material support roller 18 and the strip material support table 19 are mounted on the strip material support surface, a fixed support roller is not required. It becomes. Further, in all steps of the cutting operation of the strip members 14, 114, 115, the strip members 14, 114, 115 can be supported in a stable state, and the strip members 14, 114, 115 can be reliably cut.
Further, since the fusing device 17 mounted on such a carriage 16 travels integrally with the endless chain conveyor 15 constituting a part of the electric resistance welded steel pipe production line 11, the endless chain of the plasma torch 55 of the fusing device 17 is used. The relative positional relationship with respect to the strip material supporting roller 18 attached to the conveyor 15 is kept constant, that is, does not change. Therefore, while the fusing device 17 is running, the plasma torch 55 can surely cut only the strip members 14, 114, and 115 without cutting the strip member supporting roller 18.
[0033]
FIG. 8 shows a running cutting machine 10A according to a modification of the present embodiment.
As shown in the drawing, the running cutting machine 10A is configured such that the plasma torch 55 can be moved forward and backward in the fusing device 17a mounted on the carriage 16 in the front-rear direction by the advancing / retreating cylinder 63 relative to the fusing device mounting plate 41. It is characterized by having.
In addition, since the traveling cutting machine 10A has the same configuration as that of the traveling cutting machine 10 described above except that the reciprocating cylinder 63 is added, the same components are denoted by the same reference numerals.
[0034]
With this configuration, without operating the endless chain conveyor 15 by the carriage traveling motor 29, as shown in FIG. 6 and FIG. 115a to 115c can be formed, and the workability when forming these strip materials 14 and 115 by a forming roll group (not shown) can be improved. That is, in the case of this modified example, it is not necessary to travel the heavy endless chain conveyor 15, the truck 16, and the like, so that energy saving can be achieved. Further, since the clamp device 56 can be cut into an arbitrary shape even when it is pulled by the strip members 14 and 114 by operating the clamp device 56, no melt fragments 14d and 115d are generated.
In the above-described embodiment, the plasma torch 55 is used in the fusing devices 17 and 17a. However, other fusing devices, for example, a gas fusing device, a laser fusing device, a powder fusing device, and the like can be preferably used. Needless to say.
[0035]
【The invention's effect】
In the running cutting machine in the ERW steel pipe production line according to claims 1 to 3, the running cutting machine, a truck that moves in synchronization with the strip material, and mounted on the truck, the flow direction of the strip material and And a fusing device that is movable in the transverse direction perpendicular to the direction. As described above, since the cutting of the strip material is performed by the fusing device, it is not necessary to increase the rigidity as in the shear type running cutting machine, and the running cutting machine in the electric resistance welded steel pipe production line is manufactured at low cost. be able to. Further, since the cutting is performed by fusing, the cutting operation can be performed quietly. Furthermore, since the tip of the strip material on the upstream side after fusing can be formed into an arbitrary shape that can be easily formed by the forming roller group, defective molding portions are reduced, and the production yield can be improved.
[0036]
In particular, in the running cutter in the electric resistance welded steel pipe production line according to claim 2, a series of endless chain conveyors are disposed before and after in the line direction of the running cutting machine, and the drive side sprocket of the endless chain conveyor is clutched. In order to run the truck in the line direction via the conveyor by the drive motor, the truck is attached to a part of the endless chain conveyor, and the strip material can be detachably clamped on the truck. Attach the device, and when the running speed of the endless chain conveyor driven by the drive motor is synchronized with the running speed of the strip material, operate the clamp device to clamp the strip material, release the clutch, and drive the endless chain conveyor. The structure is such that the interlocking connection with the motor can be released.
[0037]
Therefore, the fusing device mounted on the trolley can be run in synchronization with the strip material without giving an impact to the strip material or the fusing device.
[0038]
Also, depending on the thickness of the strip material, the plate width and the cutting method, the time required for cutting may be long, but in the present invention, the endless chain conveyor is provided with a plurality of strip material support rollers, Since a sufficient length of the strip material support surface can be formed on the upper surface, a fixed strip material support roller is not required, and the strip material is stably supported in the entire process of cutting the strip material. In this state, the strip material can be reliably cut. Further, since the strip material supporting roller is provided to the endless chain conveyor in this manner, the relative positional relationship between the fusing device and the strip material supporting roller of the endless chain conveyor during traveling becomes invariable, and in the fusing operation, The cutting device can surely cut only the strip material without cutting the strip material support roller.
[0039]
In the running cutting machine in the electric resistance welded steel pipe production line according to the third aspect, the fusing device can be moved back and forth not only in the transverse direction orthogonal to the flow direction of the strip material but also in the same direction as the flow direction of the strip material. Since the clamping device is operated and the front end of the strip material on the upstream side after fusing can be formed into an arbitrary shape that can be easily formed by the forming roller group in a state of being pulled by the strip material, the waste fusing is performed. No fragments are generated, and the productivity can be further improved.
[Brief description of the drawings]
FIG. 1 is a side view of a part of an electric resistance welded steel pipe production line including a running cutting machine in the electric resistance welded steel pipe production line according to one embodiment of the present invention.
FIG. 2 is a front view of the same cutting machine.
FIG. 3 is a plan view of the same cutting machine.
FIG. 4 is a side view of the same running cutter.
FIG. 5 is a side view of a drive unit of the endless chain conveyor.
FIG. 6 is an explanatory view of a fusing operation by the fusing device.
FIG. 7 is an explanatory diagram of another fusing operation by the fusing device.
FIG. 8 is a side view of a modified example of the same cutting machine.
FIG. 9 is a conceptual overall side view of a conventional ERW pipe manufacturing line.
[Explanation of symbols]
S Set replacement point 10 Running distance cutting machine
10A running cutting machine 11 ERW steel pipe production line
12 Front pinch roller device
12a Strip material guide table 13 Rear pinch roller device
14 Strip material 14a Notch
14b Notch 14c Notch
14d Fragment 15 Endless chain conveyor
16 bogie 17 fusing device
17a Fusing device 18 Strip material support roller
19 Strip material support table 20 Conveyor machine frame
21 Endless rail 22 Endless chain
23 Base frame 24 Drive sprocket
25 Driven sprocket 26 Rotary axis
27 Clutch 28 Intermediate shaft
29 trolley running motor 30 trolley rail
31 wheels 32 wheels
33 Horizontal frame 33a Bracket
34 Horizontal frame 34a Bracket
35 Strip material support roller 36 Strip material support roller
37 Spring 38 Spring
39 legs 40 legs
41 Fusing device mounting plate 42 Horizontal rack
43 Upper horizontal guide and support rail 44 Lower horizontal guide and support rail
45 Support base 46 Sliding support member
47 Slide support member 48 Bracket
49 Fusing device traverse motor 50 Drive side gear
51 Pinion gear 52 Elevating frame
53 Lifting cylinder 54 Copy roller
55 Plasma torch 55a Water tank
56 Clamping device 57 Space
58 Movable clamp plate 59 Elevating cylinder
60 Elevating guide 61 Fixed clamp plate
62 Guide frame 63 Retract cylinder
114 Strip material 115 Strip material
115a Notch 115b Notch
115c Notch 115d Fragment

Claims (3)

A cutting machine in an electric resistance welded steel pipe production line, in which a running strip material is arranged in front of a forming roll group and behind a strip material storage device, and is capable of cutting and separating the running strip material,
The traveling cutting machine is characterized by comprising a bogie that moves in synchronization with the strip material, and a fusing device mounted on the bogie and movable in a transverse direction orthogonal to a flow direction of the strip material. Cutting machine in the ERW steel pipe production line. A series of endless chain conveyors are disposed before and after in the line direction of the running cutter, a driving sprocket of the endless chain conveyor is connected to a driving motor via a clutch, and the bogie is conveyed by the driving motor. The carriage is attached to a part of the endless chain conveyor so as to travel in the line direction through the carriage, and further, a clamping device capable of detachably clamping the strip material is attached to the carriage, and a plurality of the carriages are attached to the endless chain conveyor. The running cutting machine in the electric resistance welded steel pipe production line according to claim 1, wherein a supporting roll is provided. The fusing device mounted on the bogie is configured to be able to advance and retreat not only in a transverse direction orthogonal to the flow direction of the strip material but also in the same direction as the flow direction of the strip material. 3. A cutting machine during running in an electric resistance welded steel pipe production line according to 1 or 2.

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