JP2001121342A - Cutting device for coil-shaped wire rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device making no miss in cutting for successively cutting a wire rod left wound in a coil shape. SOLUTION: In a cutting device provided with a dropping passage through which each coil shaped wire rod drops down, and with plural arresting levers for arresting each coil-shaped wire rod by either one of the arresting levers to be moved across the dropping passage, so that each coil shaped wire rod is thereby cut off, the cutting device shall be used, which is characterized by the provision of an excluding means above and below the arresting levers for excluding each coil-shaped wire rod out of a moving area or a place close to the moving area for the arresting levers within the dropping passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cutting device for cutting a wire wound in a coil shape.

[0002]

2. Description of the Related Art An apparatus for continuously cutting a wire wound in a coil shape is disclosed in JP-B-58-5-5.
There is an apparatus called a tab shear disclosed in Japanese Patent Application Publication No. 134-134. In this method, the coil is dropped along a cylindrical drop passage, the drop of the coiled wire is interrupted by the separation finger when the coil has passed a predetermined amount, and the tip part below the separation finger is part of the fall passage. The wire is captured by a plurality of capture levers rotatably provided so that the wire can pass through, and the wire is cut. In other words, the wire rod at an arbitrary position in the cylindrical drop passage is captured by one of a plurality of capture levers that pass through a part of the drop passage by rotating the tip portion by the rotation, and The cutting is performed by the provided cutting blade and the cutting blade provided on the inner wall surface of the falling passage. This device has a feature that the end of the wire does not bend or deform because the wire travels a short distance for cutting.

[0003]

In the above-mentioned tab shear, the trajectories of the moving paths of the plurality of catching levers are slightly overlapped so that any one of the plurality of catching levers can catch the wire. Is set so that it can be cut anywhere in the cylindrical falling path. However, in practice, a situation occurs in which the coil cannot be cut well, which leads to a stoppage of the equipment and a situation in which cobble cutting of the following material occurs.

[0004] It is an object of the present invention to solve this problem and to provide a tab shear without cutting errors.

[0005]

As a result of repeated studies on when the above-mentioned cutting errors occur, the following has been found. FIG. 2 is a sectional view of the coiled wire cutting device. In this cutting device, the mandrel 2 is usually arranged at the center of the drop passage 1 so that the wire 3 does not exist near the center of the drop passage 1. Wire 3 to be cut
When the capture levers 4a, 4b, and 4c rotate and the front end portion (hook-shaped portion) passes through the fall passage 1, the capture lever is caught by any of the capture levers, and the cutting blade 5 of the capture lever 5
And a cutting blade provided on the inner wall surface of the drop passage 1. When the wire 3 to be cut is the capture lever 4a, 4b,
In the case of FIG. 2 existing near the movement area (shown by a dotted line) of the tip of 4c, the turning radii of the capture levers overlap so that the wire can be captured by any of two adjacent capture levers. Even if the setting is made in such a manner, the wire 3 that has been accidentally repelled and cannot be captured by the tip of the capturing lever 4a that has moved earlier is captured when the capturing lever 4b that subsequently moves attempts to capture it. The recoil of the lever 4a causes the trapping lever 4b to move out of the movement area of the trapping lever 4b, so that the trapping lever 4b is not trapped by any of the trapping levers and the wire 3 is not cut. And such a cutting mistake is caused by the catch lever 4a,
Since this is a problem that occurs when the wire 3 is located near the movement area of the tip of 4b, 4c, the wire to be cut is previously removed (moved away) from the vicinity of the movement area of the tip of the capture lever. By doing so, it has been found that such a problem of the cutting error can be solved. For this reason, the present invention has solved the above-mentioned problem by providing an exclusion unit for excluding the coil-shaped wire from a specific region in the falling passage at the time of cutting.

That is, the first invention of the present application has a falling passage through which the coiled wire falls and a plurality of catching levers, wherein one of the catching levers moving across the dropping passage captures the coiled wire, In the cutting device for cutting the coil-shaped wire, an exclusion unit for removing the coil-shaped wire from the moving area of the tip portion of each of the capture levers or the vicinity thereof in the drop passage is provided above or below the capture lever. It is a coiled wire cutting device characterized by comprising:

According to a second aspect of the present invention, in the above-mentioned coiled wire cutting device, the removing means for removing the coiled wire can advance into the falling passage,
A coiled wire cutting device, which is a wire rod extruding member that abuts on the coiled wire in the moving area of the tip end of each of the capture levers or in the vicinity thereof and pushes the coiled wire away from the moving area. is there.

[0008]

FIG. 1, FIG. 2 and FIG. 3 show an embodiment of a coiled wire cutting apparatus according to the present invention. FIG. 1 is a longitudinal sectional view of the entire apparatus, and FIG. 2 and FIG. FIG. 3 is a plan view of a wire capturing / cutting mechanism. The coil-shaped wire rod cutting device includes a separation finger 8 for locking a cylindrical main body A having a drop passage 1 therein and a coil-shaped wire rod 3 falling in the fall passage 1 to interrupt the drop. And a plurality of capture levers 4 provided with a cutting blade for cutting the wire rod, and a cutting blade 9 provided at or near the inner wall surface of the drop passage for cutting the wire rod 3 in cooperation with the plurality of capture levers 4. And a wire pushing-out member 6 (wire removing means) for pushing out and removing the wire 3 from a specific area in the drop passage 1 at a position above or below the capture lever 4.

The main body A has a vertically cylindrical shape for guiding the coiled wire material downward, and the inside thereof is provided with a drop passage 1.
Is composed. A conveyor is provided above the main body A, from which the coiled wire 3 is supplied into the drop passage 1. A mandrel 2 is inserted into the fall passage 1 so as to prevent the coil shape from being lost. This mandrel 2 can be moved up and down by a driving mechanism such as a cylinder device.

The separating finger 8 is provided at an intermediate portion in the height direction of the main body A, and is configured to be able to advance into the falling passage 1 by a driving mechanism such as a cylinder device, and to temporarily stop the falling of the coil-shaped wire 3. be able to.

In the present embodiment, the three catch levers 4 are provided at equal intervals in the circumferential direction of the main body A. Each of the catch levers 4 is provided with a hook-like portion 40 on the distal end side so that the wire rod 3 can be hooked and captured, and the base end portion can be pivoted in the horizontal direction by being pivotally supported 41 on the main body A side. It is provided in. As shown in FIG. 3, the three capturing levers 4
The base end is connected to a lever 10, and each lever 10 is rotatably and pivotably connected by a link 11. The capture lever 4 is driven by a driving mechanism 12 such as a cylinder device.
The cutting is performed by simultaneously rotating from the position shown in FIG. 3A to the position shown in FIG. 3B. The number of the catch levers 4 is not particularly limited. However, since the entire circumference of the drop passage 1 can be covered, three catch levers 4 are efficient.

The catch lever 4 is configured such that the hook-shaped portion 40 at the tip thereof crosses a part of the inside of the drop passage 1 when it is rotated. The moving (passing) area of the shape portion 40 is configured to partially overlap with each other. The hook-shaped portion 40
A cutting blade 5 for cutting the wire 3 in cooperation with the cutting blade 9 provided on the inner wall portion of the drop passage 1 is provided at the base end of the cutting path 5.

The wire pushing member 6 is attached to each of the catching levers 4 and is installed below each of the catching levers 4 with an interval that does not make contact with each of the catching levers 4. The slide mechanism slides into the fall passage 1 by the drive mechanism 7. In the present embodiment, it is installed below, but of course it may be installed above. The horizontal installation position of the wire pushing member 6 is a moving area of the tip end of the capturing lever 4 or a vicinity thereof as indicated by a dotted line in FIG.

The coiled wire 3 moves while falling down the cylindrical drop passage 1 so as to surround the mandrel 2. After dropping by a predetermined amount, the separation finger 8 or the like is inserted into the cylindrical drop passage 1 to temporarily stop the drop, and the mandrel 2 is pulled down (or pulled up) so as not to hinder the cutting. The same number of wire push-out members 6 as the plurality of capture levers 4 located below are caused to enter by the drive mechanism 7. Thus, even when the wire 3 is located near the movement area of the tip of the capture lever 4, the wire 3 is pushed out from the vicinity of the movement area of the tip of the capture lever 4. In this state, the hook-shaped portion 40 and the cutting blade 5 at the starting end of the hook-shaped portion 40 drop the rotatable plural capture levers 4 having a center of rotation outside the cylindrical drop passage 1. The wire 3 is moved across the passage 1 to cut the wire 3. The wire is reliably captured by any of the plurality of capture levers 4 and cut by the cutting blade 5 of the capture lever 4 and the cutting blade 9 on the cylindrical wall surface. After cutting the wire 3, the catch lever 4 and the wire pushing member 6 are returned to their original positions, the mandrel 2 is pulled up (or lowered), the drop of the coiled wire 3 stopped at the top is restarted, and the cutting is repeated.

Hereinafter, a preferred embodiment of the wire pushing member 6 will be described. The structure of the wire pushing member 6 is not particularly limited, and can be constituted by an arbitrary member. For example, it can be constituted by a plate-like member having a certain width. FIG. 4 shows an example of a preferred shape of the distal end portion when the wire pushing member 6 is formed of a plate-like member. The plate-shaped member having a planar shape has a tapered tip portion. When the wire pushing member is formed of a plate-shaped member, if the tip of the plate is straight, the wire is pushed in the direction of the center of the drop passage 1, so that the shape of the tip of the capture lever is tapered, It is desirable that θ be an acute angle.
Thereby, even when a plate-shaped member is used as the wire pushing member 6, the wire can be cut reliably.

The wire pushing member 6 is not limited to a member whose front end portion advances into the falling passage as in the above-described embodiment. It may be a wire pushing member that advances and pushes the wire from a specific area.

It is preferable that the following consideration be given to the entry position of the wire pushing member into the falling passage. If the wire pushing member and the catch lever are in the same plane, they will hit each other and cannot be cut, so they are set at different heights.Therefore, the fall path is set so that the wire does not enter the movement area of the tip of the catch lever at the catch lever position. It is necessary to determine the entry position of the wire pushing member into the inside. At this time, depending on whether the winding direction of the coiled wire is right-handed or left-handed, different considerations are required for the entry position into the fall passage. FIG. 5 shows a difference between a right-handed coil wire and a left-handed coil wire when the wire pushing member is caused to enter the falling passage at a position below the plurality of capture levers. FIG. 5 shows a longitudinal section of the device of the present invention, in which the advance position of the wire pushing member 6 is set for a right-handed coil. The moving area of the tip of the capture lever moving from the right on the cut surface 50 of the wire is shown by X, and the moving area of the tip of the capture lever moving from the left is also shown by Y. The right-handed coil-shaped wire located near the movement area Y of the tip of the capture lever moving from the left is moved to the position of the right-handed coil 51a or the right-handed coil 51b by the entry of the wire pushing member 6. Therefore, for example, when it moves to the position 51a, the right-handed coil wire 51a does not interfere with the movement area Y of the tip end of the capture lever moving from the left on the cut surface 50. However, in the case of the left-handed coil wire 52, when the wire push-out member 6 is made to enter the same position as in the case of the right-handed coil wire, the left-handed coil is moved to the position of the movement area Y of the tip end of the capture lever moving from the left on the cut surface 50. Wire rod 52
May be located and may be flipped by the capture lever to cause a cutting error. Therefore, it is necessary to set the entry position of the wire pushing member in the left-handed coil wire to the left in FIG. 5 as compared with the right-handed coil wire. As described above, it is preferable to give different considerations to the advance position of the wire pushing member in the case of the right-handed coil wire and the case of the left-handed coil wire.

It is conceivable to use a wide wire extruding member in order to cope with both the right-handed coil wire and the left-handed coil wire. However, as shown in FIG. 4, if the tip of the wire extruding member is formed into an acute-angled tapered shape. In addition, the length e of the distal end portion of the wire pushing member becomes longer, and it is necessary to increase the moving amount when pushing the wire pushing member. When the movement amount increases, the deflection of the wire pushing member also increases, the distance to the cut surface changes, and there is a risk that the wire cannot be reliably removed from the movement area of the tip end portion of the capture lever. In addition, since the distance over which the wire is moved by the wire pushing member increases, the possibility that the cut portion bends also increases.
Therefore, in order to cope with this, if the advance position of the wire pushing member is separately set for the right-handed coil wire and the left-handed coil wire, the moving amount when pushing the wire pushing member is reduced,
The wire can be reliably removed from the movement area of the tip of the capture lever. Since the angle of the wire near the cutting position changes depending on the type of steel, diameter, temperature, and the upper surface position of the coil that is stacked below, the advance position and width of the wire pushing member 6 can be designed according to each case. Good.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Using the apparatus of the embodiment shown in FIGS.
The wire 3 formed into a coil having a diameter of 1000 mm was cut. In this device, a drop passage 1 having a diameter of 1250 mm is used.
A mandrel 2 having a diameter of 800 mm was arranged in the inside, and a turning radius of the capture lever 4 was 900 mm. 10 below capture lever 4
A thin plate having a width of 225 mm and a thickness of 4.5 mm was allowed to enter the wire extruding member 6 at a position of 0 mm. Since the maximum angle of the coiled wire to be cut with respect to the horizontal plane of the wire 3 at the cutting position was 55 °, the details were designed with a margin of 50 mm.
When the coil material has fallen by a predetermined amount, the coil material is stopped from dropping into the fall passage 1, the mandrel 2 is lowered, the three wire pushing members 6 are advanced, the catch lever 4 is rotated, and the hook-like portion falls. The wire 3 was captured by entering the passage, and the wire 3 was cut. The cut wire 3 was carried out from the lower part of the apparatus. A good cut surface was obtained without bending at the cut portion of the wire 3 and cutting was performed continuously, but no cutting error occurred.

[0020]

According to the above-described coiled wire cutting device of the present invention, the coiled wire can be cut without causing any cutting errors as in the conventional device. The coiled wire can be stably produced with high productivity. In addition, since it has such an effect, it is particularly effective and practically indispensable equipment in a continuous rolling line for coiled wire rods in which a continuous billet welding device, which is expected to spread in the future, is introduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the entire coiled wire cutting device of the present invention.

FIG. 2 shows the cutting and cutting of the wire of the coiled wire cutting device of the present invention.
The top view of a capture mechanism.

FIG. 3 shows the cutting and cutting of the wire of the coiled wire cutting device of the present invention.
The top view of a capture mechanism.

FIG. 4 is an explanatory diagram of a shape of a distal end portion when a wire rod pushing member is formed of a plate-like member.

FIG. 5 is a schematic diagram of a vertical cross section of the device of the present invention for explaining the difference between a right-handed coil and a left-handed coil.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drop passage 2 Mandrel 3 Wire 4 (4a, 4b, 4c) Capture lever 5 Cutting blade of capture lever 6 Wire pushing member 7 Drive mechanism 8 Separating finger 9 Cutting blade of cylindrical wall surface 10 Lever 11 Link 12 Drive mechanism 40 Capture lever Hook-shaped part 41 Pivot part 50 Cut surface 51 (51a, 51b) Right-handed coil wire 52 Left-handed coil wire θ Angle of tip of wire pushing member e Length of tip portion of wire pushing member A Body X Moving from right Movement area of capture lever tip Y Movement area of capture lever tip moving from left

Claims (2)

[Claims] 1. A coil-shaped wire having a falling path through which a coil-shaped wire falls and a plurality of capture levers, wherein the coil-shaped wire is captured by one of the capture levers moving across the fall-path, and the coiled wire is cut. In the cutting device, the removing means for removing the coiled wire from the moving area of the tip end of each of the capture levers or the vicinity thereof in the drop passage is provided above or below the capture lever. Coiled wire cutting device. 2. The method according to claim 1, wherein said removing means for removing the coil-shaped wire is capable of advancing into the falling passage and contacting the coil-shaped wire at or near the moving region of the tip of each of the capture levers. The coiled wire cutting device according to claim 1, wherein the wire cutting device is a wire pushing member for contacting and pushing the material away from the moving area.