JP2003019620A - Method and device for cutting long metal work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently cut a long metal work such as a flat metal tube to the predetermined length with high accuracy. SOLUTION: A master roll Rw of the long metal work W is set to a material feed source 1, and the long metal work W is successively passed through a correction device 5, a feeder 6, a cutter unit 7 and a tensioning means 8 via a rolling roller 31. The long metal stock W is fed forward by the predetermined length while alternately clamping the long metal work by a pair of traveling bases 6A and 6B constituting the feeder 6, a cut is formed therein by the cutter unit 7 having a pair of circular cutter blades 72 and 72, and the tension in the axial direction with the cut as a boundary is applied to the long metal work W by the tensioning means 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for cutting a long metal material into a predetermined length, and in particular, a flat metal tube used for a heat exchanger or the like is cut from a continuous molded product to a predetermined length. The present invention relates to a method and an apparatus that can be appropriately separated by each.

[0002]

2. Description of the Related Art Conventionally, as a technique of this kind, cutting with a circular saw has been widely performed. However, since a large amount of cutting chips (chips) are generated in this type of cutting method, if the cutting target is a hollow one such as the flat aluminum tube for the heat exchanger shown in FIG. 23, clogging is caused. There is fear.

Therefore, as disclosed in JP-A-4-152016, the object to be cut (metal tube) is clamped by a fixed clamp and a movable clamp while the cutting blades sandwiching the object to be cut are used to simultaneously cut the object to be cut. A method has been proposed in which a cut is made at a right angle, and then the moving clamp is moved in the axial direction of the cut target to separate the cut target at the cut.

[0004]

However, in the method of forming a cut line by applying a shearing force to the object to be cut as described above, there is a drawback that the dividing plane R is crushed as shown in FIG. Further, when a cut is formed between the movable clamp A and the fixed clamp B as shown in FIG. 25, the fixed clamp A and the movable clamp B cannot be brought close to the position where the cut is formed. When B is moved in the direction of the arrow in the drawing, there is a problem that the cutting target extends at the distance d between the fixed clamp A and the moving clamp B before the cutting target is separated at the cut position.

Other similar methods and devices have been proposed, but all have the above-mentioned problems, and the feeding accuracy and feeding speed of a long metal material to be cut are There are many problems such as low.

The present invention has been made in view of the above circumstances, and an object thereof is to efficiently and accurately produce a long metal material such as a flat aluminum tube for a heat exchanger into a predetermined length. It is about being able to divide.

[0007]

In order to achieve the above object, the present invention provides the following method and apparatus.

(1) A method of cutting a strip-shaped or linear strip-shaped metal material into a predetermined length, wherein a pair of rotatable circular cutter blades having their outer peripheral edges forming a blade portion opposed to each other are provided in the strip-shaped metal strip. After being placed in a state orthogonal to the material and arranged in the vicinity thereof, after feeding the long metal material by a predetermined amount in the axial direction, both cutter blades are arranged along the direction perpendicular to the axis of the long metal material from one side to the other side. Of the long metal material by making a cut in the long metal material between both cutter blades and then applying a tensile force in the axial direction to the long metal material at the boundary. Division method.

(2) A feeder for feeding a strip-shaped or linear elongated metal material by a predetermined length, a cutter unit for making a slit along the axis-perpendicular direction in the elongated metal material fed by the feeder, and What is claimed is: 1.A device for cutting a long metal material, comprising: a pulling means that separates a leading portion of the long metal material from a trailing portion at a cut position, wherein the feeders are disposed at predetermined intervals along the long metal material. A pair of traveling bases having a linear reciprocating motion in a separating direction and an approaching direction are provided, and both of the traveling bases are provided with holding means for clamping the long metal material when the long metal material is moved in the feeding direction. A long metal material cutting device.

In a preferred mode of the above apparatus, a material supply source having a jig that holds a master roll of a long metal material and is intermittently rotated in a predetermined direction by a drive source, and A tension adjusting means for controlling the drive of the drive source by detecting the unwinding amount of the long metal material unwound from the master roll, and in particular, the tension adjusting means is provided between the long metal materials. It is characterized by having a swing arm having a pair of rolling rollers through which is passed through and a detector switched by angular displacement of the swing arm.

Further, the cutter unit includes a pair of circular cutter blades arranged so that the outer peripheral edges of the blades are opposed to each other and orthogonal to the elongated metal material, and both cutter blades are rotatably held to hold the cutter blades. A slide plate slidably provided in the direction perpendicular to the axis of the long metal material so as to pass through the gap portion of the cutter blade from one side to the other side of the long metal material, and this slide plate is perpendicular to the axis of the long metal material. And an actuator for reciprocating linear motion along the direction.

Further, the pulling means includes a fixing base for clamping a subsequent portion of the long metal material at a boundary formed by a cut formed by the cutter unit and an axial direction while clamping the leading portion of the long metal material. And a movable table spaced apart from the fixed table.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, application examples of the present invention will be described in detail with reference to the drawings. First, the outline of the apparatus according to the present invention will be described with reference to FIG. In the figure, W is a base material (long metal material) made of flat aluminum tubes connected in a strip shape as a division target,
Rw is a master roll that is a roll-shaped base material formed by winding the long metal material around a cylindrical core.
In the present example, the two material supply sources 1 are individually set, and the long metal material W unwound from the two material supply sources 1 is supplied in parallel to the cutting process via the tension adjusting means 2. 3 is an apparatus main body which receives a base material, that is, a long metal material from a material supply source through a tension adjusting means, and 4 is a frame forming a skeleton thereof. The frame 4 extends along a feeding direction f of the long metal material W. A straight elongated rigid body is formed, and a straightening device 5 for shaping the long metal material is roughly divided into an upper part thereof, a feeder 6 for quantitatively feeding the long metal material by a predetermined length, and divided into long metal materials. A cutter unit 7 for making cuts for cutting and a pulling means 8 for separating the preceding portion of the long metal material from the following portion with the cut as a boundary are sequentially provided from one end side. It should be noted that guide rails 9A and 9A are provided on both sides of the upper portion of the frame 4 so as to correspond to the feeder 6, the cutter unit 7, and the pulling means 8, respectively.
B and 9C are laid.

According to the above cutting device,
A long metal material W is fed out from the master roll Rw provided in the material supply source 1 by the feeder 6 in a fixed amount, shaped when passing through the straightening device 5, and reaches the cutter unit 7. A right-angled cut is made in the outer circumference of W each time, and finally the leading portion of the long metal material W is separated from the succeeding portion by the pulling means 8 at the position of the cut, and the long metal material W is repeated by this repetition. It will be divided into a predetermined length one after another.

The structure of each of these parts will be described in detail below. First, the material supply source 1 will be explained with reference to FIGS. 2 and 3.
10 is a pillar, and this pillar 10 is an inner central shaft 10A.
And a sleeve 10B rotatably provided on the outer periphery thereof
Composed of and. A seat plate 11 is provided on the upper end of the sleeve 10B, and a jig 12 for holding the master roll Rw is attached to the seat plate 11. The jig 12 links three pads 13 having an arcuate surface to a rotary shaft 14
5, the rotary shaft 14 is horizontal and one end is rotatably supported by the bearing unit 16 on the seat plate 11. In particular, a protrusion 17 for connecting one end of the link 15 is formed at the center of the inside of each pad 13, and a flange for connecting the other end of the link 15 is provided on the outer periphery of the rotary shaft 14. A slide ring 18 is provided. The tip of the rotary shaft 14 is a threaded portion 14A, and a fastener 20 with a handle 19 is screwed into the threaded portion 14A, and the fastener 20 and the slide ring 1 are attached.
A connecting metal fitting 21 is interposed between 8 and.

The fastening member 20 and the coupling member 21 are connected via a thrust bearing (not shown), and the fastening member 2
The connecting fitting 21 moves in the direction of the rotation axis when the rotation operation of 0 is performed. Then, the jig 12 as described above
According to the method, by rotating the fastening member 20, each pad 13 is translated in the radial direction of the rotating shaft 14 through the link 15, and thus the surface of each pad 13 is pressure-bonded to the inner peripheral surface of the core of the master roll Rw. By doing so, the master roll can be relatively fixed.

On the other hand, the drive source 2 for rotating the jig 12 in a predetermined direction is provided at the upper end of the central shaft 10A which constitutes the support column.
Two are provided. Then, the power is a pair of friction wheels 2
It is adapted to be transmitted to the rotary shaft 14 of the jig via 3, 24. The driven friction wheel 24 is fixed to the rotary shaft 14, and the friction wheel 24 and each pad 13 are provided with arms 25 and 26 for pressing both sides of the master roll. In particular, the pad side arm 26 is movable in the rotation axis direction, and its position can be adjusted by the entire width of the master roll.

Here, a guide roller 27 for passing a long metal material unwound from the master roll is provided on the upper portion of the column 10. Further, behind the material supply source 1, there is provided a tension adjusting means 2 for keeping the long metal material W unwound from the master roll Rw at a constant amount.

The structure will be described with reference to FIGS. 4 and 5. Reference numeral 28 is a column installed behind the material supply source.
A seat plate 29 is attached to the upper part thereof. The seat plate 29 is provided with a swing arm 30 which is swingable about a horizontal axis, and a rolling roller 31 for winding a long metal material W drawn from a master roll is provided at an upper end of the swing arm 30. Three
Reference numeral 2 denotes a support shaft that forms the center of swing of the swing arm, and the support shaft 32 is rotatably supported by a bearing unit 33 on the seat plate 29. In particular, as shown in FIG. 5, a pair of cams 34A and 34B are attached to the support shaft 32, and detectors 35A and 35B composed of proximity switches are provided on the seat plate 29 corresponding to the cams 34A and 34B. In addition, each detector 35
A and 35B are connected to the drive source 22 shown in FIGS. 2 and 3 via a control panel (not shown) to form a control circuit for controlling the drive of the drive source 22. One of the detectors 35A and 35B is for starting the drive source 22, and the other is for stopping the drive source 22.

According to the tension adjusting means 2 as described above, the detector 3 corresponding to the one cam 34A is used.
When 5A is switched, the jig 12 is rotated by the activation of the drive source 22, and the master roll is rotated.
When the long metal material W is unwound from Rw and the swing arm 30 is lowered from the position of the imaginary line shown in FIG. 4 to the position of the solid line by this, the detector 35B is switched by the other cam 34B and the drive source 22 is turned on. When it stops and the unwound long metal material W is unrolled further, the swing arm 30 is angularly displaced to the position of the imaginary line in the figure, so that the cam 34A causes the detector 35A to move.
The operation in which the drive source 22 is restarted by switching is repeated. For this reason, the long metal material W can be always unwound from the master roll Rw in a state of being unwound, and the long metal material W can be smoothly delivered to the other end with a low load.

Next, the structure of the apparatus main body will be described. First,
Explaining the straightening device 5, FIG. 6 is a schematic side view showing the whole, and FIG. 7 is a schematic plan view of the same. As is clear from these figures, the straightening device 5 is composed of a plurality of roller groups, and is roughly classified into a primary straightening unit 5A and a secondary straightening unit 5B. The primary correction section 5A is for roughly shaping a long metal material into a predetermined size, and it corrects the widths of the upper and lower horizontal rollers 36 and the long metal material for correcting the thickness of the long metal material. The right and left vertical rollers 37 are provided, and in front of them, a receiving roller 38 for receiving a long metal material from the material supply source side, and a drawing roller 39 which is rotationally driven by a motor (not shown) are provided.

On the other hand, the secondary straightening section 5B is for finishing the long metal material which has passed through the primary straightening section 5A into a predetermined size. A vertical roller 41 for width correction is arranged on the front side. The vertical rollers 37 and 41 and the horizontal rollers 36 and 40 can be adjusted in spacing according to the type of the long metal material.

According to the straightening device 5 as described above, not only the curl of the long metal material fed from the master roll by a predetermined length by a feeder described later but also its thickness and width are corrected to a predetermined dimension. can do.

Next, the mode of the feeder will be described in detail with reference to FIGS. First, as shown in FIG. 8, the feeder 6 is composed of a pair of traveling platforms 6A and 6B. In particular, both traveling platforms 6A and 6B make a reciprocating linear motion in a predetermined section along the axial direction (longitudinal direction) of the long metal material.
The movement directions are opposite to each other, and the operation of approaching and separating from each other as shown by the solid line and the imaginary line in the figure is repeated.
Reference numeral 9A denotes a pair of left and right guide rails that slidably support the traveling platforms 6A and 6B along a long metal material, and screw shafts 42A and 42B for feeding operation are provided between them.

In this example, the screw shafts 42A and 42B are ball screws, and the lower parts of the two traveling platforms 6A and 6B are shown in FIG.
As shown in FIG. 5, nuts 43A and 43B with built-in balls which are screwed with the screw shafts 42A and 42B are attached. Moreover, FIG.
As is clear from 0, pulleys 44A and 44B are attached to the respective ends of the screw shafts 42A and 42B, and the power of the servo motor 46 is transmitted to the respective pulleys through the timing belt 45, whereby the screw shafts 42A and 42B are transmitted. Are designed to rotate in opposite directions. This is a means for causing the pair of traveling bases 6A and 6B to travel in opposite directions, but the screw shafts 42A and 42B may be rotated in the same direction as mutually opposite screws. In FIGS. 8 and 9, 47 is a relay roller for bridging a long metal material from above and below to bridge one running platform 6A to the other running platform 6B. The relay roller 47 is a running platform. 6A,
It is in the middle of 6B and is fixed on the frame.

Further, as apparent from FIGS. 11 and 12,
Each of the traveling platforms 6A and 6B is constructed by mounting an operating plate 49 on a table 48 that engages with the guide rail 9A so as to be vertically movable.
Of these, an inverted T-shaped and round shaft type lifting guide 5 for guiding the vertical movement of the operating plate 49 is provided on the table 48.
0,51 is attached. On the other hand, an actuator 52, which constitutes a drive source for executing the vertical movement, is mounted on the operating plate 49, and a telescopic rod 53 thereof penetrates the operating plate 49 and is connected to the table 48. Also, the table 48
Clamps 54 and 55 serving as holding means for clamping a long metal material are fixed to the operating plate 49 on both sides of the telescopic rod 53 so as to face each other vertically and reduce the telescopic rod 53 of the actuator. At this time, the clamps 54 and 55 are close to each other to clamp a long metal material. Although a hydraulic cylinder is used as the actuator 52 in this example, a pneumatic cylinder or an electromagnetic solenoid may be used instead. On the other hand, in FIG. 11, 56 is a long metal material W.
Is a guide roller for compensating the orbit of the table 48.
It can be attached to both front and rear sides.

According to the feeder 6 as described above, the pair of traveling platforms 6A and 6B alternately clamp the long metal material, and when the clamp side advances, the other does not clamp the long metal material. By retracting the long metal material W, the long metal material W can be fed toward the cutter unit 7 of the other end at a high speed in a fixed amount without any difference.

Next, a mode of the cutter unit 7 will be described in detail with reference to FIGS. First, in FIG. 13, reference numeral 57 denotes a cutter table placed on the guide rails 9B laid on both sides of the upper portion of the frame, and the cutter table 57 has substantially the same structure as the traveling table of the feeder.
That is, the cutter table 57 that constitutes the cutter unit
Is a table 58 slidably provided along the guide rail 9B, and an ascending / descending operation plate 5 provided thereon.
9. Elevating guides 60 and 61 that guide the vertical movement
And a actuator 62 as a drive source for moving up and down the operating plate, and a guide roller 63 for orbital compensation for passing a long metal material is provided at the rear of the table 58.

In particular, a cutter device 65 having an actuator 64 as a drive source is provided at the front of the cutter table 57. As shown in FIGS. 13 to 16, the cutter device 6 is used.
5 is an end plate 67 fixed to the front side of the table 58 by brackets 66, a rail 68 and a rail receiver 6
A slide plate 71 attached to the end plate 67 via a linear guide 70 composed of 9 and slidable in the left-right direction perpendicular to the axial direction of the long metal material, and an outer peripheral edge forming a sharp blade portion 72A. It has a pair of upper and lower circular cutter blades 72 which are opposed to each other and are rotatably held by the slide plate 71. Of these, the cutter blade 72 is arranged parallel to the front surface of the slide plate 71 and in the vicinity thereof in a state of being orthogonal to the long metal material W, and the gap X of the outer peripheral edges facing each other is provided on the side edge of the long metal material W. Faced. The gap X between the cutter blades 72 is smaller than the thickness of the long metal material, and is about 0.1.
Set to ~ 1mm.

On the other hand, the slide plate 71 is a blade holder 71A for holding the cutter blade 72 in a freely rotatable manner.
And a substrate 71B to which this blade holder is attached, and an actuator 64 for linearly reciprocating the blade holder along the rail 68 is connected to one end of the substrate 71B. In particular, the slide plate 71 has an elongated hole-shaped opening 73 through which a long metal material is inserted at a position where the cutter blade 72 faces each other.
Is formed.

According to the cutter device 65 as described above, the slide plate 71 is moved left and right by the actuator 64, whereby the gap X of the cutter blade 72 is moved to one side of the long metal material as shown in FIG. To the other side, and as shown in FIG. 17, it is possible to make a cut C along the axis-perpendicular direction in the long metal material W leaving a gap X between the cutter blades 72.

As is apparent from FIG. 18, the cutter base 57 is also provided with clamps 74 and 75 for clamping a long metal material between the table 58 and the operating plate 59 so as to face each other. When a slit is formed in the long metal material by the cutter blade, the upper clamp 74 is lowered by the operation of the actuator 62 to clamp the long metal material with the lower clamp 75.

In FIG. 18, reference numeral 76 is a feed screw extending along the guide rail 9B, 77 is a servomotor for rotating the feed screw 76, and the feed screw 76 is screwed to the lower portion of the table 58. A nut 78 is attached. Therefore, the cutter unit 7 can be moved between the solid line and the imaginary line shown in FIG. 18 by the rotation of the feed screw 76, but this is moved to an appropriate position only when changing the cutting length of the long metal material. Then, the position of the cut provided to the long metal material is adjusted so as to match the position of division by the pulling means described later.

Next, the pulling means 8 will be described with reference to FIGS. 19 and 20.
Will be described. As is clear from these figures, the pulling means 8 is composed of a fixed base 8A and a movable base 8B. The fixed base 8A and the movable base 8B are similar to a pair of traveling bases constituting a feeder, and are a generally rectangular table 81, a vertically movable actuating plate 82 provided thereon, and an elevating guide that guides its vertical movement. 83, 84, and an actuator 85 as a drive source for moving the operating plate 82 up and down. Of these, the fixed base 8A is fixed at a fixed position on the frame 4, and a guide roller 86 for orbital compensation through which a long metal material is passed is provided at the rear portion thereof. On the other hand, the movable table 8B is slidably provided along a guide rail 9C laid on the upper part of the frame, and the movable table 8B is directed toward the fixed table 8A between the front part of the table 81 and the frame 4. A biasing spring 87 is interposed.

Further, the fixed base 8A is provided with an actuator 88 for separating the movable base 8B against the elastic force of the spring 87, and the fixed base 8A and the movable base 8B are separated from each other. A roller 89 forming a follower is attached to each table 81. In particular, in this example, the actuator 88 is a hydraulic cylinder, and
8A is adapted to move toward between the rollers 89, 89.

As is apparent from FIG. 20, the fixed base 8A
Clamps 90, 91 for clamping a long metal material are provided on the movable table 8B between the table 81 and the operating plate 82 so as to face each other. The clamps 90, 91 on the movable table 8B side are It projects to the side of the fixed base 8A, and one end thereof is arranged so as to be close to the clamps 90 and 91 on the side of the fixed base 8A at intervals of several millimeters.

Then, according to the pulling means 8 as described above, the cut C is made by the cutter unit as shown in FIG.
The long metal material W having been put therein is aligned with the slit C in the gap S of the clasp and is clamped by the fixed base 8A and the movable base 8B in the front and rear thereof, and in that state the movable base 8B is separated from the fixed base 8A. it allows portions W ₁ before the preceding portion or cut C long metal material is separated from the subsequent portion W _2, which is adapted to be collected in a predetermined place such as through a chute (not shown). In addition, when the division is completed, the clamp 9
0 and 91 open, the movable base 8B moves and returns to the fixed base 8A side by the retracting of the telescopic rod 88A and the elasticity of the spring 87,
We will wait for the next long metal material.

The operation of the cutting device having the above-described structure and the method of cutting a long metal material by the operation will be described below.
First, as a preparatory step, the master roll Rw of the long metal material W is set in the material supply source 1 as shown in FIG. 1, and the master roll Rw is pulled out to the apparatus main body 3 via the rolling roller 31. , The straightening device 5, the feeder 6, the cutter unit 7, and the pulling means 8 in order.

In FIG. 22, (A) shows the initial state of the feeder, the cutter unit, and the pulling means. At this time, the clasps of the respective parts 6, 7, and 8 are expanded, and the long metal material W passes between them. To be done.

At the time of the division, first, as shown in FIG. 7B, the pair of traveling platforms 6A and 6B move in the opposite directions along the long metal material W in the direction in which they are separated from each other. Particularly, at this time, one traveling platform 6B advances toward the cutter unit 7 while clamping the long metal material W, and the other traveling platform 6A.
Moves backward without clamping the long metal material W with the clamp expanded. Therefore, the long metal material W is fed forward by the moving amount on the traveling platform 6B.

Immediately after the feeding of the long metal material W by the traveling platform 6B is completed, the long metal material W is clamped by the cutter unit 7 as shown in FIG. The blades 72, 72 make a right-angled cut across the long metal material W. At this time, the pulling means 8 also clamps the long metal material W before and after the break formed by the cutter unit 7 before and after the cut, and the movable table 8B is separated from the fixed table 8A in this state. As a result, a tensile force is applied to the long metal material W in the axial direction with the break as a boundary, whereby the leading portion of the long metal material W is separated from the trailing portion.

After that, as shown in FIG. 6D, the clamp of the elongated metal material W by the cutter unit 7 and the tension means 8 is released, and at the same time, the pair of traveling platforms 6A and 6B move in the direction of approaching each other. . At this time, one traveling platform 6B is retracted so as to separate from the cutter unit 7 without clamping the long metallic material W, and the other traveling platform 6A is elongated metallic material W.
Move forward while clamping.

As a result, the long metal material W is sent forward by the amount of movement of the traveling table 6A, and then the cutter unit 7 again makes a cut as shown in FIG. In the state where the position has reached between the fixed base 8A and the movable base 8B, the portion preceding the break is separated.

Then, as shown in FIG. 6 (F), the traveling bases 6A and 6B move again in the direction in which they are separated from each other while the clamp of the long metal material W by the cutter unit 7 and the tension means 8 is released. The same operation as described above is repeated, whereby the long metal material W is divided into predetermined lengths one after another.

The elongated metal material W is unwound by an appropriate amount from the master roll Rw by the action of the tension adjusting means 2 every time it is fed out by the feeder 6, and the width and thickness are corrected by the correction device 5.

Although the application examples of the present invention have been described above, the present invention is applicable to the division of flat aluminum tubes used for heat exchangers as long metal materials and other linear materials such as strip materials or wires. Can also be applied.

[0047]

As is apparent from the above description, according to the present invention, a pair of circular cutter blades is used, and the gap portion is formed from one side to the other side along the direction perpendicular to the axis of the elongated metal material. Since it is made to pass, it is possible to make a right-angled cut in the long metal material without causing burrs or crush deformation, and since the tensile force acts on the long metal material at the boundary of the cut. The division can be performed well.

Further, since a long metal material to be cut is alternately sent by a pair of traveling beds, the machine time required for this is small, and a long cut is formed by the cutter unit or a long piece is cut by the pulling means. The metal material can be retransmitted instantly.

Further, since the fixed base and the movable base are used separately from the formation of the cut for dividing the long metal material at the boundary between the cuts, only the cut portion is formed between the fixed base and the movable base. Since the tensile force can be applied to the elongated metal material while opening it and clamping the elongated metal material, the elongated metal material does not extend in the axial direction due to the tensile force at the time of division.

Further, since the elongated metal material delivered from the master roll is unwound by an appropriate amount in advance by the tension adjusting means, the elongated metal material can be delivered smoothly with a low load.

[Brief description of drawings]

FIG. 1 is an overall view (plan view and side view) of a cutting device according to the present invention.

FIG. 2 is a side view of the material supply source.

FIG. 3 is a front view in which a material supply source is partially broken and shown.

FIG. 4 is a schematic side view showing a tension adjusting means.

FIG. 5 is a schematic plan view showing the tension adjusting means partially broken away.

FIG. 6 is a schematic side view of a straightening device.

FIG. 7 is a plan view of a correction device.

FIG. 8 is a schematic plan view of a feeder.

FIG. 9 is a schematic side view of the feeder.

FIG. 10 is a partial schematic view showing a feed mechanism of a traveling platform which constitutes a feeder.

FIG. 11 is a schematic plan view showing a traveling platform.

FIG. 12 is a front view in which the traveling platform is partially broken.

FIG. 13 is a schematic plan view of a cutter unit.

FIG. 14 is a schematic front view of a cutter unit.

FIG. 15 is a sectional view of a main part of a cutter unit

FIG. 16 is a schematic front view of a cutter device that constitutes a cutter unit.

FIG. 17 is a partially enlarged view showing a state where a slit is made in a long metal material by a cutter device.

FIG. 18 is a schematic side view of a cutter unit.

FIG. 19 is a schematic plan view of a tensioning means.

FIG. 20 is a schematic side view of the pulling means.

FIG. 21 is a partially enlarged view showing a state in which a long metal material is cut by a pulling means.

FIG. 22 is a flowchart showing a step of cutting a long metal material.

FIG. 23 is a perspective view showing a long metal material (flat metal tube).

FIG. 24 is a cross-sectional view showing a cut portion of a long metal material cut by a conventional method.

FIG. 25 is a schematic view showing a main part of a conventional device.

[Explanation of symbols]

1 Material Supply Source 2 Tension Adjusting Means 3 Device Main Body 5 Straightening Device 6 Feeders 6A, 6B Running Platform 7 Cutter Unit 8 Pulling Means 8A Fixed Platform 8B Movable Platforms 9A, 9B, 9C Guide Rail 12 Jig 30 Swing Arm 31 Rolling Rollers 35A, 35B Detectors 54, 55 Clasps (holding means for clamping a long metal material) 64 Actuator 71 Slide plate 72 Cutter blade

Claims (6)

[Claims] 1. A method for dividing a strip-shaped or linear strip-shaped metal material into predetermined lengths, wherein a pair of rotatable circular cutter blades having their outer peripheral edges facing each other face each other are provided. After arranging in a state of being orthogonal to and in the vicinity thereof, and feeding the elongate metal material by a predetermined amount in the axial direction, both cutter blades from one side to the other side along the axis orthogonal direction of the elongate metal material. Cut the long metal material between both cutter blades by passing it, and then apply a tensile force in the axial direction to the long metal material at the boundary between the cut blades. Law. 2. A feeder for feeding a strip-shaped or linear elongated metal material by a predetermined length, a cutter unit for making a slit along the axis-perpendicular direction in the elongated metal material fed by this feeder, and the slit. And a feeder for separating the leading portion of the elongated metal material from the trailing portion thereof at a position of, wherein the feeder is separated from each other at a predetermined section along the elongated metal material. Is provided with a pair of traveling bases that make a reciprocating linear motion in the moving direction and the approaching direction, and both of the traveling bases are provided with holding means for clamping the long metal material when the long metal material is moved in the feeding direction. A device for cutting a long metal material, characterized in that 3. A material supply source including a jig that holds a master roll of a long metal material and is intermittently rotated in a predetermined direction by a drive source, and a length unwound from the master roll by rotation of the jig. 3. The device for cutting a long metal material according to claim 2, further comprising: tension adjusting means for detecting the amount of unraveling of the long metal material and controlling the drive of the drive source. 4. The tension adjusting means comprises a swing arm having a rolling roller around which a long metal material is wound, and a detector switched by angular displacement of the swing arm. 3. The long metal material cutting device described in 3. 5. The cutter unit comprises a pair of circular cutter blades arranged so as to be orthogonal to a long metal material with their outer peripheral edges forming a blade portion facing each other, and both cutter blades being rotatably held. A slide plate slidably provided in the direction perpendicular to the axis of the long metal material so as to pass through the gap portion of the cutter blade from one side to the other side of the long metal material, and this slide plate is perpendicular to the axis of the long metal material. 3. An apparatus for cutting a long metal material according to claim 2, further comprising an actuator for linearly reciprocating along the direction. 6. The pulling means includes a fixing base that clamps a trailing portion of the long metal material with a cut formed by the cutter unit as a boundary, and a leading portion of the long metal material that clamps the leading portion along the axial direction. 3. The device for cutting a long metal material according to claim 2, further comprising a movable table spaced apart from the fixed table.