JP5357582B2 - Saw cutting system and steel cutting method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sawing system suppressing backlash during traveling of a traveling carriage without generating burrs and chipping in a steel material cutting surface. <P>SOLUTION: This sawing system 10 includes a sawing device 11 for cutting the steel material S and a clamping device 12 for clamping the steel material S during the cutting. The sawing device 11 includes the traveling carriage 13 provided with a rotary saw blade 14 for cutting the steel material S in a front part, a movable base 18 for supporting the traveling carriage 13 to advance forward/backward and elevate/lower, and a fixed base 17 for supporting the movable base 18. The clamping device 12 includes a first clamping part 26 and a second clamping part 27 arranged side by side across a traveling passage of the rotary saw blade 14. A guide rail 28 for guiding the traveling carriage 13 in a traveling direction H is laid in the traveling direction H on an upper surface of an upper side holding member 26a of the first clamping part 26. A sliding part 29 sliding on the guide rail 28 is mounted on a bottom surface of the traveling carriage 13. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to a sawing system for cutting a steel material with a rotary saw blade and a steel material cutting method using the sawing system.

As a means for cutting a steel material such as a shape steel or a flat steel into a predetermined length, a sawing device 50 as shown in FIG. 7 is used (see, for example, Patent Document 1). The sawing device 50 is configured such that a disk-shaped rotary saw blade 51 is attached to a front portion of a traveling carriage 53 that is guided by wheels 54 installed on a base (not shown) and moves forward and backward by a hydraulic cylinder 52. Yes. When cutting the steel material S, the traveling carriage 53 is advanced while rotating the rotary saw blade 51 at a high speed, and the steel material S fixed on a mounting table (not shown) is cut.

JP-A-5-185317

However, in the case of the conventional sawing device 50, when the traveling carriage 53 is advanced by the hydraulic cylinder 52 in order to cut the steel material S, only the rear portion of the traveling carriage 53 is guided by the wheels 54 installed on the base. It becomes a state. For this reason, rattling occurs when the traveling carriage 53 moves forward and backward, and the rotary saw blade 51 swings out of the plane. As a result, burrs were generated on the cut surface of the steel material S, and the end of the cut surface was missing when the rotary saw blade 51 was cut through. Especially in the case of a friction saw, the material to be cut is heated and softened by the heat generated by the frictional action between the rotary saw blade and the material to be cut (steel material), and then cut off with the rotary saw blade. There are more burrs than.

The present invention has been made in view of such circumstances, and provides a sawing system that suppresses backlash during traveling of a traveling carriage and does not cause burrs or chips on a steel material cutting surface, and a steel material cutting method using the same. The purpose is to do.

To achieve the above object, sawn systems according to the present invention, provided with rotary saw blade for cutting the steel to traveling carriage which is movable up and down as well as forward and backward in the direction perpendicular to the transport direction of the steel sawing And a clamp device that clamps the steel material and is installed at a position in front of the sawing device and across the steel material conveyance path, and the clamp device guides the traveling carriage in the traveling direction. Further, the guide portion can be moved up and down independently of the sawing device .

Further, a steel material cutting method according to the present invention is a steel material cutting method using the sawing system, wherein the traveling carriage is advanced, and an upper portion of the steel material clamped by the clamping device is moved by the rotating saw blade. A step of cutting, a step of lowering the traveling carriage, a step of lowering the guide portion as the traveling carriage is lowered, a backward movement of the traveling carriage, and a lower portion of the steel material clamped by the clamping device And a step of cutting with a rotary saw blade.
In this specification, the side on which the rotary saw blade is provided as viewed from the traveling carriage is referred to as a “front” direction, and the opposite side is referred to as a “rear” direction.

In the present invention, since the guide device for guiding the traveling cart in the traveling direction is provided in the clamp device, the front portion of the traveling cart is supported by the guide portion when the traveling cart is traveling. For this reason, backlash does not occur when the traveling carriage travels, and the rotary saw blade does not swing out of the plane. As a result, burrs on the steel material cut surface and chipping at the end of the cut surface are prevented. In addition, in the present invention, the traveling carriage and the guide part can be moved up and down, and the upper part of the steel material is cut when moving forward, and the lower part of the steel material is cut when moving backward, thereby preventing burrs on the steel material cutting surface.

In the sawing system according to the present invention, the clamp device includes a first clamp part and a second clamp part for clamping the steel material, with the traveling path of the rotary saw blade interposed therebetween, and the first clamp part. The guide part may be installed in the clamp part.
In the said structure, since the 1st clamp part and the 2nd clamp part are arrange | positioned on both sides of the traveling path of a rotary saw blade, the cut | disconnected steel materials do not jump and it becomes a beautiful cut surface.

Further, in the sawing system according to the present invention, the first clamp portion includes an upper clamping member and a lower clamping member that clamp the steel material, and the guide portion is provided on the upper clamping member that can be moved up and down. May be installed.
In the said structure, it is not necessary to install the new raising / lowering apparatus for guide parts by installing a guide part in the upper holding member which can be raised / lowered.

In the present invention, because the guide device that guides the traveling carriage in the traveling direction is provided in the clamp device, the backlash does not occur when the traveling carriage travels, and the rotary saw blade does not shake in the out-of-plane direction, Since the traveling carriage and the guide part can be raised and lowered, the upper part of the steel material is cut when moving forward, and the lower part of the steel material is cut when moving backward, so that burrs on the steel material cutting surface and chipping of the end of the cutting surface can be prevented. Can do.

The sawing system which concerns on one embodiment of this invention is shown, (A) is the side view, (B) is the front view. The sawing system is shown, (A) is a side view thereof, and (B) is a front view thereof. The sawing system is shown, (A) is a side view thereof, and (B) is a front view thereof. The sawing system is shown, (A) is a side view thereof, and (B) is a front view thereof. (A) is the sectional side view which showed the condition which cut | disconnects the upper part of steel materials, (B) is the front sectional drawing. (A) is the sectional side view which showed the condition which cut | disconnects the lower part of steel materials, (B) and (C) are the front sectional drawings. It is a schematic diagram of the conventional sawing apparatus.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.

As shown in FIGS. 1A and 1B, a sawing system 10 according to an embodiment of the present invention includes a sawing device 11 that cuts a steel material S and a clamping device 12 that clamps the steel material S at the time of cutting. And. The sawing device 11 is arranged in a direction orthogonal to the transport direction R of the steel material S, and the clamp device 12 is installed at a position in front of the sawing device 11 and crossing the transport path.

The sawing device 11 includes a traveling carriage 13 in which a rotating saw blade 14 for cutting the steel material S is provided on one side of the front portion, and a direction perpendicular to the conveying direction R of the steel material S is a traveling direction H The movable base 18 is configured generally by a movable base 18 that supports the traveling carriage 13 so as to be able to move forward and backward, and a fixed base 17 that supports the movable base 18.

The rotary saw blade 14 has a disk shape (for example, outer diameter: 2000 to 2200 mm, thickness: 10 to 15 mm), is connected to a motor 20 installed on the traveling carriage 13, and rotates at a high speed within the vertical plane (for example, In the case of a friction saw, the peripheral speed is 120 m / sec).
The traveling carriage 13 is supported by a guide roller 19 installed on the movable base 18 so as to be able to travel in the traveling direction H, and is connected to the fixed base 17 via a hydraulic cylinder 15 whose rod extends and contracts in the traveling direction H. Yes. The traveling carriage 13 moves forward and backward in the traveling direction H by extending and contracting the rod of the hydraulic cylinder 15.
The movable base 18 is placed on a support base 17 a provided on the fixed base 17, and the rear end of the movable base 18 is interposed via a hydraulic cylinder 16 in which a rod extends and contracts in a vertical plane including the traveling direction H. Are connected to the fixed base 17. The lower portion 18a of the movable base 18 has a wedge shape with the front inclined downward, and the upper portion of the support base 17a also has an inclined portion with the front inclined downward. The movable base 18 slides in a vertical plane including the traveling direction H by expanding and contracting the rod of the hydraulic cylinder 16.

The clamp device 12 includes a first clamp portion 26 and a second clamp portion 27 that are arranged side by side across the travel path of the rotary saw blade 14. The 1st clamp part 26 and the 2nd clamp part 27 have upper side clamping member 26a, 27a and lower side clamping member 26b, 27b which clamp the steel material S, respectively. The lower clamping members 26b and 27b are supported by hydraulic jacks 22 and 23 installed on the fixed base 21, and the upper clamping members 26a and 27a are supported by hydraulic cylinders 24 and 25 installed on the fixed base 21. Can be moved up and down.

A guide rail 28 (guide portion) for guiding the traveling carriage 13 in the traveling direction H is provided on the upper surface of the upper clamping member 26a of the first clamp part 26 where the traveling carriage 13 is installed on the side of the rotary saw blade 14. It is laid in the running direction H. On the other hand, a sliding portion 29 having a U-shaped cross section is mounted on the side of the rotary saw blade 14 on the bottom surface of the traveling carriage 13 so as to slide on the guide rail 28 with the guide rail 28 interposed therebetween.

Next, a steel material cutting method using the sawing system 10 having the above configuration will be described.
(1) The steel material S conveyed to the clamping device 12 by a conveying device (not shown) is clamped by being sandwiched between the upper clamping member 27a and the lower clamping member 27b of the second clamp part 27 (see FIG. 1). Further, in accordance with the height of the steel material S, the rod of the hydraulic cylinder 16 is expanded and contracted to move the movable base 18 up and down, and the height of the lowermost end of the rotary saw blade 14 is adjusted to be positioned at the center of the steel material S. . On the other hand, the rod of the hydraulic cylinder 24 provided in the clamp device 12 is extended to raise the upper clamping member 26a of the first clamp portion 26 to a position where the traveling carriage 13 can slide on the guide rail 28.
(2) The motor 20 is driven to rotate the rotary saw blade 14 in the direction of cutting down the steel material S (see FIG. 5A), and the rod of the hydraulic cylinder 15 is extended to advance the traveling carriage 13 (forward speed: 300-500 mm / sec) (see FIGS. 2A and 2B). The traveling carriage 13 advances while being guided by the guide rail 28 and the guide roller 19, and the upper portion of the steel material S is cut.

(3) After the upper cutting of the steel material S is completed, the rod of the hydraulic cylinder 16 is extended to lower the movable base 18 so that the lowermost height of the rotary saw blade 14 is below the lower surface of the steel material S. (See FIGS. 3A and 3B). At the same time, the rod of the hydraulic cylinder 24 is contracted to lower the upper clamping member 26a of the first clamp portion 26, and the steel material S is clamped with the upper clamping member 26a and the lower clamping member 26b.
(4) The rotary saw blade 14 is rotated in the direction in which the steel material S is rounded up (see FIG. 6A), the rod of the hydraulic cylinder 15 is contracted, and the traveling carriage 13 is moved backward (reverse speed: 100 to 300 mm / second). (See FIGS. 4A and 4B). The traveling carriage 13 is guided by the guide rail 28 and the guide roller 19 to move backward, and the lower part of the steel material S is cut.

FIG. 5 (B) shows a cross section of the steel material S when the rotary saw blade 14 is advanced to cut the upper portion of the steel material S. When the rotary saw blade 14 is moved backward from this state and the lower portion of the steel material S is cut, a bridge V is formed at the cut just before the cutting (see FIG. 6B). The bridge V is detached as a cut piece (see FIG. 6C), and no burr is formed.

In the present embodiment, when the upper portion of the steel material S is cut, only one end of the steel material S needs to be clamped, so the upper clamping member 26 a is used only for guiding the traveling carriage 13. Further, when cutting the lower part of the steel material S, it is necessary to clamp both sides of the rotary saw blade 14 so that the separated steel material S does not jump. It fulfills both functions of the steel material S clamp.

Although one embodiment of the present invention has been described above, the present invention is not limited to the configuration described in the above-described embodiment, and is within the scope of matters described in the claims. Other possible embodiments and modifications are also included. For example, in the above embodiment, the movable base is a wedge type, but the movable base may be supported by a hydraulic cylinder.

10: sawing system, 11: sawing device, 12: clamping device, 13: traveling carriage, 14: rotating saw blade, 15, 16: hydraulic cylinder, 17: fixed base, 17a: support base, 18: movable base, 18a: lower part, 19: guide roller, 20: motor, 21: fixed base, 22, 23: hydraulic jack, 24, 25: hydraulic cylinder, 26: first clamp part, 27: second clamp part, 26a, 27a: upper clamping member, 26b, 27b: lower clamping member,
28: Guide rail (guide part), 29: Slide part, S: Steel material, R: Transport direction of steel material S, H: Travel direction of traveling carriage 13, V: Bridge

Claims (4)

A sawing device the rotary saw blade is provided for cutting the steel to traveling carriage which is movable up and down as well as forward and backward in the direction perpendicular to the conveyance direction of the steel material, the forward and conveyance path of the steel of the sawing device A clamping device that is installed at a transverse position and clamps the steel material;
The said clamping apparatus has a guide part which guides the said driving cart to a driving | running | working direction, Furthermore, the said guide part can be raised / lowered independently of the said cutting apparatus, The sawing system characterized by the above-mentioned. 2. The sawing system according to claim 1, wherein the clamp device includes a first clamp part and a second clamp part that clamp the steel material, with a traveling path of the rotary saw blade interposed therebetween, and the first clamp part. The sawing system, wherein the guide part is installed in the part. 3. The sawing system according to claim 2, wherein the first clamp portion includes an upper clamping member and a lower clamping member that sandwich the steel material, and the guide portion is provided on the upper clamping member that is capable of being raised and lowered. A sawing system characterized by being installed. A steel material cutting method using the sawing system according to any one of claims 1 to 3,
The step of moving the traveling carriage forward, cutting the upper part of the steel material clamped by the clamping device with the rotary saw blade, lowering the traveling carriage, and lowering the guide portion as the traveling carriage descends A method of cutting a steel material, comprising: a step; and a step of moving the traveling carriage backward and cutting a lower portion of the steel material clamped by the clamp device with the rotary saw blade.

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