JP2002052420A - Cutting burr removing device for slitting bar member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve removal of cutting burr of a strip after slitting by simple constitution in slitting equipment for the strip, and to heighten the grade of burr removal. SOLUTION: In the removing device for removing upward or downward cutting burrs generated in the end part of a section of each strip in slitting the strip into plural bar members, plural cutting burr removing heads movable in the direction orthogonal to the pass line of the bar members are provided corresponding to the number of bar members. A cutting tool 20 extended pointing toward the cutting burr of the bar members undertaken by the concerned removing head and capable of contacting the cutting burr is mounted on each of the removing heads. The cutting burr can be surely removed by the cutting tool and good slit grade can be kept.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing burrs of a slitting strip, for example, slitting a strip of an electromagnetic steel sheet used for an iron core of a transformer into a strip of an appropriate width. In this case, the present invention relates to an apparatus for removing a burr-like cutting burr generated at a cutting portion of the strip.

[0002]

2. Description of the Related Art The slitting operation of a steel strip is performed by unwinding the strip from an uncoiler and cutting the strip into a plurality of strips having a predetermined width by a slitter having a plurality of rotary cutting blades arranged on a line. It is done by doing. Since such a slitting operation is a shearing operation using a pair of cutting blades arranged above and below the pass line, the band-shaped material (strip) obtained after the slitting is directed downward at the edges at both ends in the width direction. And upward burr-like so-called "cut burr"
Occurs. The cutting burr generated during such slitting has a great effect on the product in the field of grain-oriented electrical steel sheets where high-precision uniformity of thickness is required, and when it is used as a core material for transformers. Cutting return is 7μm
It is said that the above would have an adverse effect on iron loss.

For this reason, conventionally, a means disclosed in Japanese Patent Application Laid-Open No. 7-112319 has been proposed as a means for removing cutting burrs. This removal device is arranged in the line downstream of the slitter for the upper surface deburring and the lower surface deburring in the width direction of the line, and swings so as to be able to come into contact with the cutting burring generation portion of the strip with an appropriate pressing force. An arm is provided, and a file is provided at a tip portion of the arm so as to come in contact with and remove the cutting burr. If such a removing device is provided, the file at the tip of the arm comes into contact with the stripping material after running on the take-up reel side after the slitting of the strip by the slitter, so that the upper and lower cutting burrs can be continuously performed for each strip. Can be removed.

Further, as a means for improving the removing apparatus disclosed in Japanese Patent Application Laid-Open No.
In the publication No. 0-328933, there is provided a scraper that cuts between these strips diagonally from above the strip where an upward cutting burr occurs to below an adjacent strip.
There is disclosed a cutting bur remover comprising a super hard file capable of contacting a downward and an upward cutting bur on both upper and lower surfaces of the scraper, respectively.

[0005]

However, it has been found that, in the above-mentioned conventional deburring removing device, a transformer using the completed slit product as an iron core has a large adverse effect on iron loss. That is, when an investigation was made on the adverse effect on iron loss of a transformer made of a slit material by a conventional deburring technique, it was found that there was a very problem with the interlayer resistance of the laminated iron core. Furthermore, when the cause of the iron core was investigated in detail, it was found that contact between the laminated plates at the slit end face or adhesion of the slit debris to the product was a problem, and solving this problem had an adverse effect on the iron loss of the transformer. Was found to be improved.

[0006] The problem to be solved in the present invention is to solve the above-mentioned problems of the prior art, and more efficiently and surely removes the cutting burrs of the strip after the slitting, and removes the cutting waste after the removal. However, it is possible to maintain a high slit quality without adversely affecting the product.

[0007]

The gist of the present invention for solving this problem is as follows. (1) An apparatus for removing upward and downward burrs generated at the end of the cut surface of each strip when slitting the strip into a plurality of strips, in a direction perpendicular to the pass line of the strip. A plurality of movable cutting burrs are provided corresponding to the number of strips, and each of these removing heads is extended toward the cutting burrs of the strips to be covered by the removing head and can contact the cutting burs. A cutting and burring removal device for slitting strips, which is equipped with a special cutting tool. (2) the angle theta ₁ between a byte and strip member 20 ° to 6
The cutting deburring apparatus according to the above (1), which can be changed within a range of 0 °. (3) bytes and strip member is made changeable by byte cutting angle θ range of ₂ to 1 ° to 20 ° when contacting the (1) or (2) cutting back removal apparatus according. (4) The cutting burring removal head is installed in the apparatus main body which is movable along a guide provided on a traversing frame installed across the strip material pass line, wherein (1) to (3). The cutting burrs according to any one of claims 1 to 6. (5) A slit provided on a downstream side of the cutting deburring device according to any one of the above (1) to (4), for disposing of the debris removed by the cutting tool. Facilities.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a slitting line facility incorporating a cutting and burring removal device for a slitting strip according to the present invention, and FIG. 2 is a schematic view of a slitter disposed in this line and a cutting and burring of a cut strip. FIG. As shown in FIG. 1, the slitting line is a strip transfer line between the uncoiler 1 in which the strip S is wound in a coil shape and the take-up reel 5 for winding the strip which has been slitted and cut and deburred. A slitter 2 for slitting the strip S into a plurality of strips from the upstream side, a cutting burring removal device 3 for removing a cutting burr generated at an end in the width direction of the strip, and a removed cut. A processing device 4 for dispensing burrs outside the line is arranged. A looper is provided before and after the slitter 2 as needed.

In the present invention, since the removed burrs are in the form of a thread, if the burrs are removed later by a pad or a gas spray, the adhesion to the slit surface can be sufficiently avoided. That is, as the processing device 4 for the removed cutting burrs,
Either a pad type in which the cut burrs are pressed against and discharged, or a gas injection type in which a gas such as air is blown and discharged to the cut burrs may be adopted. In addition, it is preferable to use a baking material which does not give a surface flaw to a strip material as a pad.

In the above-mentioned slitting line, the strip S which is rewound and sent from the uncoiler 1 is sent.
After slitting into a plurality of strips by the slitter 2, the cutting burrs generated at the ends in the width direction of the strips are removed by the cutting burrs removing device 3, and then the removed burrs are removed. After being paid out of the line by the processing device 4, each strip is taken up by a take-up reel 5.

[0011] As shown in FIG.
Are a pair of rotatable arbor shafts 6a and 6b arranged so as to sandwich the pass line of the strip S, and a plurality of arbor shafts 6a and 6b attached to each of the arbor shafts 6a and 6b at intervals according to the width of a strip to be slitted. Cutting blades 7a, 7b
Consists of At the time of cutting, these cutting blades 7a, 7
Due to the rotation of b and the shearing action caused by the running of the strip S, the strip S becomes, for example, 5 mm as shown in FIG.
It is slitted to the strips S _{1 to} S ₃ .

Here, the cutting blade 7a arranged on the upper side shears while pushing the strip S downward, and the cutting blade 7b arranged on the lower side shears while pushing the strip S upward. At the edges of the cut end surfaces of the materials S _{1 to} S ₃ , downward and upward cutting burr 8
a and 8b respectively occur. These cutting burrs are
In the case of the arrangement of the cutting blades shown in FIG. 2A, each of the strips is either upward or downward, and the strips S ₁ , S
For ₃ is a downward cutting back 8a, the rest in the elongated member S ₂ upward cutting back 8b.

In the present invention, the above-mentioned cutting burr can be efficiently removed.
And ensure that no problems occur after removal
FIG. 3 shows an upward cutting at an intermediate position.
It has the burr 8b, and the cutting burr facing down on both sides
8a having three strips S ₁~ S_ThreeCutting for
FIG. 4 is a plan view showing an example of a burring removal device, and FIG.
FIG. 5 is a perspective view showing one cutting burring removal device.
FIG. 6 and FIG. 6 are front views as viewed from the upstream side in FIG.

As shown in the figure, a traversing frame 9 is installed above the strip pass line so as to cross the line and to be orthogonal to the pass line, and the cutting burrs are fixed to both side surfaces of the traversing frame 9. Slide rail 10
The guide is held and traversed freely along. This cutting burring removal device includes an apparatus main body 11 that engages with a slide rail 10 and a removal head 12 that is suspended from the apparatus main body 11 so that the height position can be adjusted. In the example shown in FIG. 3, a pair of removing devices facing each of the strips S ₁ , S ₂ , and S _3, that is, downward cutting burr 8a
For strip members S ₁ , S ₃ having four cutting devices a, b, c, d engaged with the slide rails 10 on the downstream side of the traversing frame 9, have cutting burrs 8 b facing upward. and two removal device e engaged with the upstream side slide rail 10 of the transverse frame 9, f were respectively arranged for strip material S _2. Each of these removing devices has the same structure except for the orientation and the state of attachment of the cutting tool, and therefore, as shown in FIG. 5, a single removing device will be described below.

As shown in FIGS. 4 and 5, the traversing frame 9 is made of a long steel material having a box-shaped cross section. The slide rail 10 fixed to the side surface of the frame 9 by screwing or welding is, for example, a rail. Has a cross section similar to that of the first embodiment, and is provided with an overhanging sliding portion 13 which engages with the main body, so that the main body 11 slides along the rail. A tightening lever 14 is provided above the overhanging sliding portion 13 of the apparatus main body 11. The main body 11 is manually slid along the slide rail 10, and tightened by the tightening lever 14 at an arbitrary position. We are trying to position. Of course, the guide means of the above-mentioned engaging / traversing method is not limited to the illustrated example, and other known examples can be adopted. For example, the engagement method is a suspension type, a suspension type, etc., and the traversing means is not limited to manual, and a motor or a cylinder or the like as a driving source or a moving means may be a mechanical means such as a gear meshing mechanism. It is also possible to appropriately adopt the method used.

The apparatus main body 11 has a main body frame 15 in which one side has an overhanging sliding part 13 fixed thereto.
On the other surface of the main body frame 15, an L-shaped plate 16 to which the removing head portion 12 is attached is attached so as to be freely adjustable in height over a certain range. This height adjusting mechanism is configured such that the lower end of an adjusting screw 18 is freely attached to the upper side of an L-shaped plate 16 having a long hole 17 only in the rotation direction.
The L-shaped plate 16 may be moved up and down by turning the adjusting screw 18 and screwed to the main body frame side, and may be fixed at the appropriate position with the tightening screw 19.

The removing head section 12 includes a cutting tool 20 for directly contacting and cutting a cutting burr generated on a cutting end surface of a strip material, a cutting tool holder section 21 for holding the cutting tool 20 at an appropriate position, A tool angle adjustment mechanism for supporting the tool portion 20 in an appropriate posture and enabling the tool 20 to always come into contact with the cutting burr in an optimum state. As shown in FIGS. 3 and 6, the cutting tool 20 extends so as to cut between adjacent strips at a certain angle from above to below with respect to the end face of the strip having the cutting burrs.

FIG. 7 shows the shape of the cutting tool 20 used in the present invention. The cutting tool has a trapezoidal shape, and the cutting tool has a cutting tool angle θ ₃ of 20 to 70 °, preferably 4 °.
0-60 ° is required. The material of the cutting tool is a general hard cutting tool material or cutting super hard tool material, which is composed of metal and hard metal compound. The main component of the hard phase is tungsten, titanium, tantalum, niobium carbide, nitrided. , Carbon nitrides, aluminum oxides, etc., or those in which these hard phases are physically or chemically adhered to one or more layers on the surface. Also,
Ceramic, diamond, etc. can be used at all.

The orientation of the bit 20 shown in FIG. 5 is a case where the bottom surface of the cutting edge becomes lower surface, which is intended for elongated member S ₂ with an upward cutting back 8b, downward cutting back 8a 20 for strip materials S ₁ and S ₃
In FIG. 5, the bottom surface of the cutting blade is the upper surface, and the cutting blade has a posture opposite to that of the cutting tool in FIG. In FIG. 3, the slide rail 10 on the downstream side of the pass line has four removal heads for holding the cutting tool with the cutting blade surface on the upper side, and the upstream side has two removal heads for holding the cutting tool with the cutting blade surface on the lower surface. Are respectively shown. As described above, the cutting tool 20 needs to protrude longer from the downward cutting burr 8a so that its direction can be appropriately changed in the cutting tool holder section 21. Therefore, the protruding length from the holder section can be arbitrarily set. It is mounted so that it can be adjusted.

In addition to the angle θ ₃ of the cutting tool 20 itself, in order to remove the cutting burr in an optimum state, the angle θ ₁ between the longitudinal direction (axial direction) of the cutting tool and the strip surface and the cutting angle of the cutting tool (cutting angle) it has been found that it is effective to optimize the eggplant longitudinal angle) theta ₂ between the bottom surface and the strip member surface of the blade. Specifically, the angle theta ₁ is 20 to 60 °, preferably in the range of 30 to 50 °, byte cutting angle theta ₂ is 1
It has been found that a very good slit quality can be obtained by allowing the angle to be changed in the range of 20 °, preferably 5 to 15 °. However, at this time, the shape of the cutting tool used is
The byte angle theta ₃ is 20 to 70 °, preferably 40
60 ° is required. If the balance between θ _{1 and} θ ₃ is lost, good slit quality cannot be obtained.

The angles θ ₁ and θ ₂ are determined by the thickness of the strip, the interval between the strips, the state of the formed burrs, the bite angle θ.
_The optimal angle can be selected each time by ₃ etc.
As an angle adjusting mechanism for that purpose, as shown in FIG.
The tool holder 21 is rotatably held in a predetermined range around the tool axis via a plate 22, and by turning a nut 23 provided on the plate 22, the holder 21 is turned to cut the cutting angle of the tool 20. Either adjust θ ₂ or add the plate 22 to the L-shaped plate 1
6 is attached to a holding plate 25 which rotates in a plane perpendicular to the horizontal plane within a certain range with respect to the surface of the holding plate 2.
The protrusion angle θ ₁ of the cutting tool may be adjusted by rotating the holding plate 25 with the nut 24 provided in the nut 5.

FIG. 8 shows a comparison between the conventional example and the slit quality of the present invention. (A) is a cross section of the slit material in which the cutting burrs are removed by means of a conventional file, and there are portions where the burrs are not completely removed, which adversely affects the interlayer resistance and the iron loss characteristics of the transformer. It seems to have been. On the other hand, (b) shows the case where the burrs were completely removed by the cutting means (θ ₁ : 30 °, θ ₂ : 8 °, θ ₃ : 50 °) of the present invention. You can see that the problem has been solved.

[0023]

According to the cutting burring removal apparatus of the present invention described above, burrs can be efficiently and reliably removed with a simpler structure, and a slit surface of superior quality than ever before can be obtained. As a result, it was confirmed that the iron loss characteristics of the transformer using the slit material were also improved.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a slitting line provided with a cutting deburring apparatus of the present invention.

2 (a) is a schematic view of an arrangement of slitting blades of a slitter, and FIG. 2 (b) is a schematic view of a cutting burr generated on each strip slitted by the cutting blade as viewed from a downstream side of a line.

FIG. 3 is a plan view showing an example of a cutting burring removal device according to the present invention.

FIG. 4 is an enlarged view taken along line AA of FIG. 3;

FIG. 5 is a schematic perspective view showing one removal head unit in FIG. 3 together with its transverse frame and slide rails.

FIG. 6 is a front view of FIG. 3 and is a schematic view showing a state of insertion of a cutting tool into a strip.

7A is a plan view and FIG. 7B is a cross-sectional view showing a specific example of a cutting tool used in the present invention.

FIG. 8 (a) is a slit cross-sectional view when removed by means of a conventional file, and FIG. 8 (b) is a slit cross-sectional view when removed by means according to the present invention. A circle in the figure indicates a portion for removing burrs.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 Uncoiler 2 Slitter 3 Cutting burring removal device 4 Removal burring device 5 Take-up reel 6a, 6b Arbor shaft 7a, 7b Cutting blade 8a, 8b Cutting burring 9 Traversing frame 10 Slide rail 11 Device body 12 Removal head unit 13 Overhanging slide clamping pivot portion 14 clamping lever 15 main frame 16 L-shaped plate 17 long hole 18 adjusting screw 19 screw 20 bytes 21 bytes holder portion 22 plate 23 the nut (angle theta ₂ for adjustment) 24 nut (angle theta ₁ for adjustment) 25 holding plate S strip S ₁ to S ₃ slitting been elongated member

Continuing from the front page (72) Inventor Masami Ono 6-4 Irifune-cho, Shiima-ku, Himeji-shi, Hyogo Hirota Electric Steel Center Co., Ltd. (72) Inventor Toshinobu Kai 6-4 Irifune-cho, Shima-ku, Himeji-shi, Hyogo Hirohata-den Inside the Magnetic Steel Center Co., Ltd. (72) Norio Yasuda Inventor 6-4 Irifunecho, Shima-ku, Himeji-shi, Hyogo Hirohata Electric Steel Center Co., Ltd. F-term (reference) 3C050 FB08 FB13

Claims (5)

[Claims] 1. An apparatus for removing upward and downward burrs generated at an end of a cut surface of each strip when slitting the strip into a plurality of strips, wherein the strip is perpendicular to a pass line of the strip. In addition to providing a plurality of cutting burr removal heads that are movable in the direction corresponding to the number of strips,
A cutting burring removal device for a slitting strip material, wherein each of the removal heads is provided with a cutting tool which extends in a direction directed toward the cutting burrs of the strip material which the removal head is responsible for and is capable of contacting with the cutting burrs. 2. The angle θ ₁ between the cutting tool and the strip is 2
2. The cutting deburring apparatus according to claim 1, wherein the apparatus can be changed within a range of 0 to 60 degrees. 3. The cutting deburring apparatus according to claim 1, wherein the cutting angle θ ₂ when the cutting tool and the strip come into contact can be changed within a range of 1 ° to 20 °. 4. The apparatus according to claim 1, wherein the cutting burring removal head is mounted on an apparatus main body movably along a guide provided on a traversing frame provided across the strip material path line. The cutting deburring device according to any one of claims 1 to 7. 5. A slitting device comprising a processing device for paying out burrs removed by a cutting tool downstream of the cutting burring device according to any one of claims 1 to 4. Facility.