KR101101639B1 - Apparatus of automatic grinding circle type saw blade for cutting section shape steel - Google Patents

Abstract

The present invention relates to an apparatus for automatically cutting a circular saw blade for cutting a shaped steel, comprising: a main body housing and an apparatus for polishing a blunt saw blade while being rotated and driven in a main body housing; An auxiliary saw blade integrally fixed to an inner surface of the saw blade and formed at the same pitch as the saw blade; A pitch shifter which is latched to the auxiliary saw blade and rotates by one pitch when the saw blade is ground; An actuator interlocked with the pitch shifter and installed in an upper portion of the main body housing; An incision cam connected to the actuator; An operating bar guide connected to the infeed cam and vertically moved within a predetermined distance according to the flow of the infeed cam; It is connected to the operation bar guide, and provides a circular saw blade automatic polishing device of the shaped steel cutter, characterized in that it comprises a polishing unit having a rotary grinding wheel for polishing the saw blade.

According to the present invention, when cutting and reproducing worn blades after a certain time of use when cutting a large shaped steel, the number of teeth is improved and the service life of the saw blades is not only long, but also the convenience of grinding work is improved, the polishing time is shortened, and the productivity is improved. And the like can be obtained.

Section steel, polishing, saw blade, service life

Description

Automatic grinding device of circular saw blade for cutting steel material {APPARATUS OF AUTOMATIC GRINDING CIRCLE TYPE SAW BLADE FOR CUTTING SECTION SHAPE STEEL}

The present invention relates to an automatic polishing device of a circular saw blade for cutting a shaped steel, and more particularly, the automatic automatic cutting (insertion) and polishing between the teeth when the saw blade of the cutting saw blade used for cutting large shaped steel is blunted. The present invention relates to an automatic polishing apparatus for circular saw blades for cutting shaped steel, which can contribute to cutting precision of teeth, ease of grinding, improved efficiency and shortening of polishing time, improved cutting efficiency, and longer service life of the saw blade.

In general, section shape steel (section shape steel) is a structural rolled steel is a general term for a rolled material having various cross-sectional shape, mainly used for steel structure.

These sections are divided into isosceles a, isosceles, H, I, C, Z, and T according to the cross-sectional shape.

In general, a small form steel such as a chassis is rotated by the rotary saw blade (2) by the motor (1) as shown in the example of Figure 1 to cut the workpiece placed on the support (3), the work handle (4) forward As a pull, a device in which the front and rear movable plate 6 was moved forward on the base 7 by the front and rear movable rod 5 was used.

In recent years, cutting operations using lasers have been the main reasons for improving the quality of cutting surfaces, convenience of cutting operations, safety, and the like.

However, in the case of a large section steel used as a skeleton of a building or used as an opposite steel structure, the size is too large and there is a limit to cutting using a laser cutting machine, and even if cutting, there is a disadvantage in that it takes too much time and money.

Therefore, in the case of a large shape steel, cutting using a saw blade type cutter as in the prior art is much more advantageous in terms of cost and time, and thus cutting using a large saw blade.

However, although the large saw blade has a high strength, since the workpiece is a large shaped steel material, the wear of the saw blade is large, and thus the service life of the large saw blade has been very short.

To solve this problem, the saw blade should be polished after a certain use. It is virtually impossible to grind manually with the saw blade mounted on the equipment, so it must be removed and polished every time. At this time, the grinding operation uses a circular saw blade automatic grinding machine which is a separate equipment.

The present invention was created in view of the above-described problems in the prior art, and when cutting a large shape steel using a large saw blade, the cutting precision is improved by quickly and easily grinding and regenerating the saw blade blunted by abrasion. The main problem is to provide an automatic polishing device for cutting circular saw blades to improve the cutting efficiency, thereby extending the service life of large saw blades.

The present invention provides a means for achieving the above object, in the apparatus for polishing a saw blade for cutting a steel material comprising a main housing and a saw blade mounted on the main body housing while rotating the large shape steel material; An auxiliary saw blade integrally fixed to an inner surface of the saw blade and formed at the same pitch as the saw blade; A pitch shifter which is latched to the auxiliary saw blade and rotates by one pitch when the saw blade is ground; An actuator interlocked with the pitch shifter and installed in an upper portion of the main body housing; An incision cam connected to the actuator; An operating bar guide connected to the infeed cam and moving in a certain distance according to the flow of the infeed cam; It is connected to the operation bar guide, and provides an automatic grinding device of the circular saw blade for cutting the shape steel, characterized in that it comprises a polishing unit having a rotary grinding wheel for grinding the teeth.

In this case, an operation bar is installed inside the operation bar guide, and the operation bar is installed to be engaged with a correction block having an inclined surface, and is provided to protrude gradually through the operation bar guide tip as the correction block rises. It is also characterized by being connected to a solenoid operated to protrude the actuating bar by the amount of abrasive wear.

In addition, a drive gear is connected to the solenoid, and a check gear having a step is connected to the drive gear, and an outer circumferential surface of the check gear is disposed in contact with a limit switch so that the limit switch contacts the step of the check gear. It is also characterized in that it is configured to generate a replacement signal of.

According to the present invention, since the saw blade can be polished and reproduced as it is without grinding wheels, depending on the wear level of the grindstone after grinding for a predetermined time, the grinding precision is improved, and the convenience of polishing operation is improved. The effect of shortening and productivity improvement can be obtained.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

2 is an exemplary side view showing an installation state of the automatic polishing device according to the present invention, Figure 3 is an exemplary front view showing an installation state of the automatic polishing device according to the present invention, Figure 4 is an automatic polishing device according to the present invention Figure 5 is an exemplary view showing the main configuration of, Figure 5 is an illustration of an automatic cutting unit constituting the automatic polishing apparatus according to the present invention.

As shown in Figures 2 and 3, the circular saw blade grinding machine for cutting the shaped steel material equipped with the automatic polishing device according to the present invention includes a main body housing (100).

In addition, the front surface of the main body housing 100 is provided with a rotating shaft 110 that is rotated by a power source provided in the main body housing 100, the rotating shaft 110 has a sufficient size to cut a large section steel material The saw blade 120 is mounted.

2 and 3 show only a part of the saw blade 120 because it is large.

The saw blade 120 is made of a material having a high strength, but considering that the cutting object is a shape steel material, the blade is blunted by wear occurs within a very short time.

Therefore, a polishing operation for periodically raising the blade of the saw blade 120 is required.

The automatic polishing device according to the present invention is used when it is necessary to erect the blade of the saw blade 120 due to the wear of the saw blade 120 during the cutting of the steel material, and should be used by regrinding the saw blade periodically.

The automatic polishing apparatus includes a polishing unit 200 installed on an upper portion of the main body housing 100, and the grinding unit 200 is equipped with a grinding wheel 210.

The grinding wheel 210 enters between the teeth 130 of the saw blade 120 and then is a means for grinding it. The grinding wheel 210 is formed in a circular shape and is installed in a direction orthogonal to the saw blade 120.

In addition, the polishing unit 200 is installed so as to be movable along the unit guide 220, the grinding wheel 210 is rotated by receiving power from the abrasive driving motor 230.

In this case, the polishing drive motor 230 is installed on the opposite side of the polishing unit 200 of the main body housing 100, it is preferable that the grinding wheel 210 is directly connected to the belt through the pulley (P).

In addition, the grinding wheel 210 may be further provided with a protective cover 240.

In addition, an auxiliary saw blade 140 having the same pitch as the teeth 130 of the saw blade 120 is integrally formed on the inner surface of the saw blade 120, and the auxiliary saw blade 140 is polished as shown in FIG. 3. It is configured to move one pitch by the pitch mover 150 during operation.

In this case, the pitch mover 150 is configured to be latched in the form of a latch (latchet) with the auxiliary saw blade 140, so that the auxiliary saw blade 140 can be constantly rotated in only one direction.

In addition, an actuator 300 is installed at one upper side of the main body housing 100, and the actuator 300 is controlled to move forward and backward within a predetermined stroke according to the operation of the pitch mover 150.

In addition, a cutting cam 310 is connected to the front end of the actuator 300, and the cutting cam 310 is configured to flow the operation guide 330 up and down while rotating about the cutting cam shaft 320. .

At this time, the operation bar 340 as shown in Figure 4 is built into the operation bar guide 330, the operation bar 340 is configured to be pushed out of the operation bar guide 330 little by little. In particular, the grinding unit 200 is connected to the front end of the operation bar 340.

Accordingly, the injecting cam 310 is rotated by the forward and backward operation of the actuator 300 to push or pull the operation bar guide 330, and the polishing unit 200 flows up and down through the pitch shifter. When the tooth 130 is rotated by one pitch at the same time as the flow of 150, the polishing units 200 are raised so as not to interfere with each other, and after completion of one pitch rotation, the polishing unit 200 is lowered and the polishing unit is lowered. The grinding wheel 210 installed in the 200 may grind the teeth 130, and this process may be repeated until all the teeth 130 of the saw blade 120 are polished.

In this process, the abrasive grindstone 210 is also worn along with the grinding of the teeth 130, so that after the abrasive grindstone 210 is worn out to some extent, gaps with the teeth 130 are generated so that only grinding is performed in the air. The case occurs.

Therefore, there is a need to automatically correct this, which is a number of experiments in consideration of the material (abrasion rate) of the abrasive grindstone 210, the strength or hardness of the saw blade 120, and the like to lower the grinding wheel 210 by the table Can be configured to automatically adjust the height.

That is, the operation bar guide 330 shown in Figure 4 is always moved within a certain width, so that the grinding wheel 210 is automatically cut (inserted) between the teeth 130, the operation bar guide The operation bar 340 in the 330 is projected little by little within a predetermined condition along the operation bar guide 330 to compensate for the wear of the grinding wheel 210.

To this end, a part of the operation bar guide 330 is fitted with a correction block 350 having an inclined oblique surface, the rear end of the operation bar 340 is installed in contact with the inclined surface of the correction block 350.

Therefore, when the correction block 350 is raised, the operation bar 340 is pushed forward by the inclination of the inclined surface, so that the length of the protrusion protruding from the operation bar guide 330 becomes long, thereby grinding abrasive 210. The wear can be corrected by as much as.

At this time, the means for adjusting the protruding length of the operation bar 340 by moving the correction block 350 may have a variety of forms, but here will be described by way of example the structure as shown in FIG. ), The abrasion fraction is not so large that it is not necessary for the correction block 350 to flow too much and is only a very small amount. For reference, illustrated in the drawings are enlarged for convenience of description.

In addition, the wear correction means for moving the correction block 350, as illustrated in Figure 5, the solenoid 400 may be installed on the upper portion of the main body housing 100, the solenoid 400 is operated The member 410 is connected and is installed in contact with the driving member 410 so as to push the drive gear 420, the drive gear 420 is installed to elastically return by the spring (430).

In addition, a driven gear 440 is coupled to a part of the drive gear 420. In this case, the drive gear 420 is coupled to rotate the driven gear 440 in one direction by having a latch type. The pusher (not shown) is arranged in contact with the rotary shaft 450 of the driven gear 440 so that the correction shaft 350 can be pushed a little by riding a spline when the rotary shaft 450 rotates in one direction. It is configured to be.

In addition, the check gear 460 having the step 462 is coupled to the other part of the driving gear 420 so as to be rotated in only one direction, and through the limit switch 470 contacting the step 462 after one rotation. Means for informing the replacement time of the grinding wheel 210 may be further provided.

Furthermore, these components are mounted inside and outside the correction unit U.

The present invention having such a configuration has the following operational relationship.

When the worn saw blade is mounted and the automatic polishing device is driven, the pitch mover 150 is operated to rotate the saw blade 120 by one pitch.

At the same time, the grinding drive motor 230 is driven to rotate the grinding wheel 210, and the automatic cutting function is performed.

That is, the actuator 300 is operated in accordance with the one-pitch rotation of the saw blade 120 and the cutting cam 310 flows, and the operation bar guide 330 is moved up and down according to the flow of the cutting cam 310. As the abrasive unit 200 connected thereto is pierced between the teeth 130 of the saw blade 120, the worn teeth 130 are polished to raise the blade.

In this process, the abrasive grindstone 210 is also worn, so that the solenoid 400 is operated to compensate for the wear powder, and thus the operation bar 340 built into the operation bar guide 330 slightly protrudes. Since the insertion depth of the 210 is increased, the wear of the abrasive grindstone 210 is substantially compensated so that the grinding is not prevented.

In this way, when polishing is completed and the grinding wheel 210 is determined to be no longer polished by the detection signal of the limit switch 470 during polishing, the polishing grindstone 210 may be replaced.

As described above, the automatic polishing apparatus according to the present invention can reduce the saw blade polishing time and improve the convenience of use and productivity in the saw blade type steel cutter which is used for cutting large shape steel, thereby reducing the cutting time. have.

1 is an exemplary view of a chassis cutting machine which is a kind of conventional small shape steel;

Figure 2 is an exemplary side view showing the installation of the automatic polishing apparatus according to the present invention,

3 is an exemplary front view showing an installation state of the automatic polishing device according to the present invention;

4 is an exemplary view showing a main configuration of an automatic polishing apparatus according to the present invention;

5 is an illustration of an automatic cutting unit constituting an automatic polishing device according to the present invention.

♧ description of the symbols for the main parts of the drawing ♧

100: main body housing 120: saw blade

200: grinding unit 210: grinding wheel

300: actuator 310: infeed cam

330: operation bar guide 340: operation bar

400: solenoid 470: limit switch

Claims (3)

An apparatus for grinding a circular saw blade for cutting a steel material comprising a main body housing and a saw blade mounted to the main body housing and rotating to drive the large shape steel material; An auxiliary saw blade integrally fixed to an inner surface of the saw blade and formed at the same pitch as the saw blade; A pitch shifter which is latched to the auxiliary saw blade and rotates by one pitch when the saw blade is ground; An actuator interlocked with the pitch shifter and installed in an upper portion of the main body housing; An incision cam connected to the actuator; An operating bar guide connected to the infeed cam and moving in a certain distance according to the flow of the infeed cam; And a polishing unit connected to the operation bar guide and having a rotary grinding wheel for grinding the teeth. The method according to claim 1; An operation bar is installed inside the operation bar guide, and the operation bar is installed to be engaged with a correction block having an inclined surface, and is provided to protrude gradually through the operation bar guide tip as the correction block rises. Automatic grinding device of the circular saw blade for cutting the shape steel, characterized in that connected to the solenoid operable to protrude the operation bar by the amount of wear. The method according to claim 2; A drive gear is connected to the solenoid, and a check gear having a step is connected to the drive gear, and an outer circumferential surface of the check gear is placed in contact with a limit switch so that the limit switch contacts the step of the check gear to replace the grinding wheel. Automatic grinding device of the circular saw blade for cutting the steel material, characterized in that configured to generate a signal.

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