KR20200061568A - Steel chopper - Google Patents

Abstract

An object of the present invention is to provide a round bar cutting apparatus capable of minimizing damage to the cutting surface of a round bar by preventing eccentric loading of a slide. The round bar cutting apparatus according to the present invention may include: the slide in the form of a cylinder fixed to be movable up and down on an upper side of a main frame; a slide guide disposed outside the slide and having an inner diameter to guide the slide to move along a predetermined moving shaft; and an upper blade and a lower blade cutting the round bar by lifting and lowering the slide on a lower side of the main frame.

Description

Slide circular guide type round bar cutting device{STEEL CHOPPER}

The present invention relates to a round bar cutting device, more specifically, to a round bar cutting device that can reduce the damage to the cutting surface of the round bar due to the eccentric load of the slide by always operating the slide with the same moving axis regardless of the load of the slide. It is about.

Metal rods are cut to the required length for each part and used.

There are various methods of cutting the round bar, but there is a method of cutting using a fixed blade and a moving blade as one method.

In this cutting method, since the fixed blade and the moving blade are engaged to cut the round bar, it is important that the moving blade descends to a position corresponding to the fixed blade.

However, when a high-load slide is applied as a power source for descending a moving blade, despite the presence of a slide guide, the slide may descend from the set moving axis by an eccentric load.

Such a slide has a problem in that the state of the round bar cutting surface is damaged due to misalignment of the moving blade and the fixed blade because the moving blade cannot be lowered to the set moving axis.

Therefore, there is a need for a slide-guide structure capable of preventing eccentric loading regardless of the load of the slide.

Korea Patent Publication No. 10-2013-0004112 (published on January 9, 2013)

An object of the present invention is to provide a circular bar cutting device capable of minimizing damage to the cutting surface of the round bar by preventing the eccentric load of the slide by moving the slide along a predetermined moving axis.

In order to achieve the object of the present invention, the round bar cutting device according to an embodiment of the present invention is a cylindrical slide that is fixed to be movable up and down on the upper side of the main frame, the slide is arranged on the outside of the slide and the slide is preset It may include a slide guide having an inner diameter for guiding to move along the axis, and an upper blade and a lower blade for cutting a round bar by lifting of the slide below the main frame.

In addition, the upper blade may be disposed on the lower side of the slide and may be disposed on the inside of the upper blade holder that is reciprocated up and down by receiving a pressing force.

In addition, the round bar cutting device according to an embodiment of the present invention is disposed between the slide and the cassette, and includes a pressure transmission unit absorbing a contact shock between the slide and the cassette, and the pressure transmission unit is installed at the bottom of the slide It may include an upper pressure transmitting portion and a lower pressure transmitting portion installed on the upper portion of the cassette.

In addition, the upper pressure transmitting unit may be formed of an upper mold body that is directly fastened to the lower surface of the slide, and an upper mold sheet plate that is fastened to the upper mold body and transmits pressure to the lower part.

In addition, the lower pressure transmitting portion may be an upper holder sheet plate mounted in the cassette and partially fastened to the upper blade holder protruding upwards of the cassette.

In addition, the center of the upper mold sheet plate coincides with the center of the upper holder sheet plate, and the upper mold sheet plate may be formed equal or smaller than the upper holder sheet plate.

In addition, the slide guide may include a cylindrical body and a protrusion formed to protrude outward from the bottom of the body so that the body is fixed to the main frame.

In addition, the inner circumferential surface of the body and the outer circumferential surface of the slide are spaced at a predetermined interval, the predetermined interval is 0.3 to 0.4 mm, and a lubricant may be supplied to the predetermined interval.

In the round bar cutting device according to the embodiment of the present invention, even when the load of the slide increases, the slide may move up and down along a predetermined moving axis.

Due to this, slide slipping (eccentric load) is prevented and the upper blade is accurately engaged with the lower blade, thereby reducing damage to the round bar cutting surface.

However, the effects of the present invention are not limited to the above effects, and may be variously extended without departing from the spirit and scope of the present invention.

1 is a partial cross-sectional view (side view) showing the configuration of a round bar cutting device according to an embodiment of the present invention.
Figure 2 is a partial cross-sectional view (front view) showing the configuration of a round bar cutting device according to an embodiment of the present invention.
3 is a view schematically showing an order in which a round bar cutting device cuts a round bar according to an embodiment of the present invention.
4 is a view showing a cross-section AA of FIG. 1.
5 is a view showing a cross section of a conventional slide and a slide guide according to an embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Among the components of the present invention, a detailed description thereof will be omitted so as not to obscure the gist of the present invention with respect to those skilled in the art that can be clearly understood and easily reproduced by the prior art.

Hereinafter, the round bar cutting device according to the present invention will be described.

1 is a partial cross-sectional view of a side view showing a configuration of a round bar cutting device according to an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of a front view showing a configuration of a round bar cutting device according to an embodiment of the present invention.

1 and 2, the round bar cutting device may largely include a slide 120, a slide guide 150, a cassette 100, and a pressure transmitting unit 200.

The slide 120 may be in the form of a cylinder fixed to be movable up and down on the upper side of the main frame (1).

The slide guide 150 may be disposed on the outside of the slide 120 to be a cylindrical shape that guides the slide 120 to move along a predetermined movement axis.

In addition, the slide guide 150 may include a cylindrical body 152 and a protrusion 153 protruding outward from the bottom of the body 152 so that the body 152 is fixed to the main frame 1.

The protrusion 153 can be fixed to the main frame 1 by a mechanical element such as a bolt nut.

In the drawing, a case in which one protrusion 153 is formed at the bottom of the body 152 is illustrated, but the present invention does not limit the shape, number, and location of the protrusion 153 in one embodiment.

The body 152 may have a cylindrical shape surrounding the outer circumferential surface of the slide 120, but this embodiment does not limit the shape of the body 152.

That is, if it includes an inner circumferential surface corresponding to the outer circumferential surface shape of the slide 120 and has a structure that can be fastened to the main frame 1, the shape and size of the body 152 is not limited.

The inner circumferential surface of the body 152 and the outer circumferential surface of the slide 120 are spaced apart at a predetermined interval, and the predetermined interval may be 0.3 to 0.4 mm.

At this time, the lubricant may be supplied at a predetermined interval.

When the predetermined interval is greater than 0.4 mm, eccentricity may occur as the moving distance of the slide 120 and the slide guide 150 is distorted and the moving distance of the slide 120 becomes longer.

On the other hand, if the predetermined distance is less than 0.3mm, the eccentricity of the slide 120 can be prevented, but the space for the lubricating oil is limited so that the slide 120 is moved up and down due to friction between the slide 120 and the slide guide 150. It may not be smooth.

Therefore, the predetermined interval is a space at which the slide 120 and the slide guide 150 can move up and down without distorting the moving shaft, and an oil film by lubricant is formed between the slide 120 and the slide guide 150 to prevent friction and wear. It may be a gap that can be reduced.

4 is a view showing a cross-section A-A of FIG. 1, and FIG. 5 is a view showing a cross-section of a conventional slide and a slide guide according to an embodiment.

4 and 5, the difference between the conventional slide 120'-slide guide 150' and the slide 120-slide guide 150 according to the present invention will be described.

The conventional slide guide 150' guides the outer surface of the slide 120' in a flat shape by partially contacting the guide, and the slide guide 150 according to the present invention guides the outer peripheral surface of the slide 120 as a whole.

이 된다.As shown in FIG. 5, it consists of four slide guides 150' having a length of 730 mm at a width of 90 mm and two slide guides 150' having a length of 730 mm at a width of 130 mm, and slides 120' and 6 In case of surface contact, the contact area between the slide 120' and the slide guide 150' is 452,600.

It becomes.

이 된다.On the other hand, as shown in FIG. 4, when the slide guide 150 having an inner diameter of 460 mm is formed with a length of 530 mm, the contact area between the slide 120 and the slide guide 150 is 765,532.

It becomes.

That is, the above comparison is that when comparing the round bar cutting device of the same capacity, when the six-sided guide and the circular guide, it is possible to widen the guide area according to the vertical motion of the slide. Eccentricity can be prevented, and can have the advantage of improving the precision when cutting the round bar.

Next, the cassette 100 includes an upper blade 30 and a lower blade 80 for cutting the round bar 10 by lifting of the slide 120, and may be disposed under the main frame 1 .

Cassette 100 is an upper blade holder 20 disposed on the lower side of the slide 120, disposed inside the upper blade holder 20, the upper blade 30 for cutting the round bar 10, the round bar 10 The lower insert guide 60 to accommodate the lower insert holder 60, the lower blade holder 70 wrapped around the lower insert guide 60 and fixed to the main frame 1, the lower blade holder 70 is disposed on the side of the support the round bar 10 The lower blade 80 and the lower blade holder 70 may include a material clamp 50 disposed on the upper side of the side.

The cassette 100 is an integral type that can be fastened or detached from the main frame 1, and can be simply replaced and used in the event of old age or failure.

The pressure transmitting unit 200 is disposed between the slide 120 and the cassette 100 to absorb the shock caused by direct contact between the slide 120 and the upper blade holder 20, and the slide 120 by direct contact ) And the upper blade holder 20 can be prevented in advance.

The pressure transmission unit 200 may include an upper pressure transmission unit installed at the lower end of the slide 120 and a lower pressure transmission unit installed at the upper end of the cassette 100.

1 and 2, the upper pressure transmitting part is an upper mold body 160 that is directly fastened to the lower side of the slide 120, and an upper mold sheet plate 170 that is fastened to the lower side of the upper mold body 160. ).

The lower pressure transmission unit may be an upper holder sheet plate 90 fastened to an upper side of the upper blade holder 20.

The pressure transmitting unit 200 is for minimizing damage to the upper blade holder 20 and the slide 120 by preventing direct contact between the slide 120 and the cassette 100, and the present invention provides a pressure transmitting unit 100. It does not limit the configuration and shape.

The upper mold main body 160 is fastened by a bolt or the like directly to the lower surface of the slide 120 to perform a role as a slide integrally with the slide 120, the upper mold sheet plate 170 and the upper holder sheet plate 90 Directly touches and transmits pressure by power.

The upper mold sheet plate 170 is a pressure transmitting body that transmits the pressing force of the upper slide 120, and the upper holder sheet plate 90 may be a pressure transmitting body that receives the pressing force.

Since the upper mold sheet plate 170 and the upper holder sheet plate 90 may be worn or damaged by direct contact, they may have a role as a consumable product, and thus, the slide 120 and the upper blade holder 20 ) Can be used semi-permanently to prevent wear or damage.

In addition, since only the upper blade holder 20 and the upper blade 30 that reciprocate up and down by the slide 120 should be in direct or indirect contact with the slide 120, the upper holder sheet plate ( 90) is attached, and the upper mold sheet plate 170 is attached to the slide 120 via the upper mold body 160, and the pressure caused by the contact between the upper mold sheet plate 170 and the upper holder sheet plate 90 is applied. It can enable intensive delivery.

In addition, it is preferable that the upper mold sheet plate 170 is located in the center of the upper holder sheet plate 90 so as to enable concentrated transmission of pressure, and the size of the upper mold sheet plate 170 is also higher than that of the upper holder sheet plate 90. It can be formed smaller or equal.

Again, the configuration of the cassette 100 will be described in detail with reference to FIGS. 1 and 2 as follows.

The upper blade holder 20 is disposed under the upper mold body 160 and includes the upper blade 30 therein.

The upper blade holder 20 may be coupled to the upper blade 30 by a bolt fastening method to be detachably installed.

Since the upper blade holder 20 is installed under the upper mold body 160, the upper blade holder 20 can also move up and down by the vertical movement of the slide 120.

The upper blade 30 is a component for cutting the round bar 10 together with the lower blade 80.

The upper blade 30 is disposed on one surface of the upper blade holder 20 and can be moved up and down together with a hydraulic shock absorber (not shown) coupled with the upper mold body 160 installed on the upper blade holder 20. .

The lower insert guide 60 is a place for accommodating the round bar 10 by having a seating space, and the round bar 10 can be inserted to serve as a guide for easy cutting.

According to an embodiment of the present invention, the inner shape of the lower insert guide 60 may be formed in a cylindrical shape to match the shape of the round bar 10, and the outer shape of the lower insert guide 60 may also be cylindrical.

However, the outer shape of the lower insert guide 60 is not necessarily circular, but may be in the form of a polygon.

The lower blade 80 may be disposed on the lower side of the lower insert guide 60, and the material clamp 50 may be disposed on the upper side of the lower insert guide 60.

The round bar 10 enters the lower insert guide 60, and the round bar 10 is seated on the lower blade 80, and the material clamp 50 presses the round bar 10 to fix it, and then the upper blade comes down and the round bar 10 ) Can be cut.

The lower blade holder 70 may wrap the lower insert guide 60 to support the lower insert guide.

According to an embodiment of the present invention, the inner shape of the lower blade holder 70 may be formed in a cylindrical or polygonal shape according to the shape of the lower insert guide 60, and the outer shape of the lower blade holder 70 may also be cylindrical or polygonal. Can be.

The lower blade 80 may be disposed on the lower side of the lower blade holder 70, and the material clamp 50 may be disposed on the upper side of the lower blade holder 70.

The lower blade 80 may be disposed on the lower side of the lower blade holder 70 and the lower insert guide 60 to support the round bar 10 introduced into the lower insert guide 60.

According to an embodiment of the present invention, the lower blade 80 may be simultaneously moved downward with a material clamp (not shown) by a hydraulic shock absorber (not shown).

The hydraulic shock absorber (not shown) is disposed at one end of the upper mold body 160 and may be disposed at a predetermined distance from the upper blade 30.

The hydraulic shock absorber (not shown) may be respectively coupled to one surface of the upper mold body 160 and the upper blade holder 20, or may be simultaneously coupled to one surface of the upper mold body 160 and one surface of the upper blade holder 20. .

In addition, according to an embodiment of the present invention, a single power unit is used, but the hydraulic shock absorber (not shown) and the lower bladder 80 and the upper blade 30 may move up and down sequentially instead of simultaneously.

The hydraulic shock absorber (not shown) may serve to press the material clamp 50 when the slide 120 moves downward.

When the hydraulic shock absorber (not shown) presses the material clamp 50, at least a portion of the hydraulic shock absorber (not shown) may be introduced into the hydraulic shock absorber (not shown).

It is possible to moderate the force transmitted from the slide to the material clamp 50 by the inlet of the hydraulic shock absorber (not shown).

That is, according to one embodiment of the present invention, the hydraulic shock absorber (not shown) may serve as a shock absorber, whereby a smaller force is transmitted to the material clamp 50 and the round bar 10 is protected from scratches or deformation. can do.

The material clamp 50 may be disposed on the upper side of the lower blade holder 70 and the lower insert guide 60.

The material clamp 50 may serve to fix the upper and lower blades 30 and 80 by pressing the round bar 10 with a predetermined force before cutting the round bar 10.

By clamping the material clamp 50 by pressing the round bar 10 before cutting, the cut surface of the round bar 10 is smooth and prevented from being thrown away as a defect, thereby minimizing the remaining residue.

3 is a view schematically showing a procedure of cutting a round bar 10 by a round bar cutting device according to an embodiment of the present invention.

Referring to FIG. 3, when the slide 120 moves downward along a movement axis preset by the slide guide 150 and presses the pressure transmission unit 200, the round bar 10 is cut by the cassette 100.

When the cutting of the round bar 10 is completed, the slide 120 moves upward and at the same time, the components of the cassette return to the original position.

In the embodiment of FIG. 3, the process of cutting the round bar 10 of the cassette 100 is fixed to the round bar 10 of the material clamp 50 and the process of opening the passage of the lower insert guide 60 and the round bar of the upper blade 30 ( 10) Although it was divided into a cutting process, this embodiment is not limited to the present invention.

That is, in the present invention, the cassette 100 and the cassette 100 for cutting the round bar 10 by the cylindrical slide 120 and the cylindrical slide guide 150, the upper blade 30 and the lower blade 80 ) And the configuration of the pressure transmission unit 200 that absorbs the contact shock between the slide 120, the configuration of the configuration and the operation method may be variously applied.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, and the like exemplified in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been mainly described above, these are merely examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention pertains have the above-described scope without departing from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications not illustrated are possible. That is, each component specifically shown in the embodiment can be implemented by modification. And differences related to these modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.

10: round bar
20: upper blade holder
30: upper blade
50: material clamp
60: lower insert guide
70: lower blade holder
80: lower blade
90: upper holder sheet plate
100: cassette
120: slide
120': Conventional slide
130: round bar inlet
140: spring
150: slide guide
150': Conventional slide guide
160: upper mold body
170: upper mold sheet plate
200: pressure transmission unit
1010: Round Bar Short
152: body
153: protrusion
1: Main frame

Claims (7)

A slide in the form of a cylinder fixed to be movable up and down on the upper side of the main frame;
A slide guide disposed on the outside of the slide and having an inner diameter to guide the slide to move along a predetermined movement axis; And
The upper blade and the lower blade for cutting the round bar by the lifting of the slide on the lower side of the main frame; including, round bar cutting device. According to claim 1,
The upper blade,
Arranged on the lower side of the slide is disposed on the inside of the upper blade holder that is reciprocated up and down by receiving the pressing force, round bar cutting device. According to claim 1,
Includes; is disposed between the slide and the cassette to absorb the contact shock between the slide and the cassette;
The pressure transmission unit,
An upper pressure transmitting part installed at the bottom of the slide; And
Including, the lower pressure transmission portion installed on the upper portion of the cassette, including, round bar cutting device. The method of claim 3,
The upper pressure transmission unit,
It consists of an upper mold body which is directly fastened to the lower surface of the slide, and an upper mold sheet plate that is fastened to the upper mold body and transmits pressure to the lower part.
The lower pressure transmission unit,
A round bar cutting device mounted in the cassette, the upper holder sheet plate being partially fastened to the upper blade holder protruding to the upper portion of the cassette. The method of claim 4,
The center of the upper mold sheet plate coincides with the center of the upper holder sheet plate,
The upper mold sheet plate is formed of the same or smaller than the upper holder sheet plate, round bar cutting device. According to claim 1,
The slide guide,
Cylindrical body; And
A protruding portion protruding outward from the bottom of the body so that the body is fixed to the main frame; Including, round bar cutting device. The method of claim 6,
The inner peripheral surface of the body and the outer peripheral surface of the slide are spaced a predetermined distance,
The predetermined interval is 0.3 to 0.4mm,
Lubricating oil is supplied through the predetermined interval, the round bar cutting device.

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