KR102175010B1 - Steel chopper - Google Patents

Abstract

The round bar cutting device according to the present invention is a round bar cutting device that cuts a metal round bar material by transmitting power through a slide guide and a slide, and is a cylindrical slide fixed to the upper side of the main frame so as to move up and down, the outer peripheral surface of the slide A slide guide with an inner circumferential surface that encloses the entire and guides the slide to move along a preset moving axis, and is disposed on the lower side of the main frame, the upper and lower blades that cut the metal round bar by the lifting of the slide, and the upper blade inside It is stored in the upper blade holder and moves up and down by the pressing force of the slide. It is disposed between the slide and the upper blade holder, absorbs the contact shock between the slide and the upper blade holder, and transmits the pressing force of the slide to the upper blade holder. Including a transmission part, an oil film formed by lubricating oil is formed between the slide guide and the slide, and the pressure transmission part is an upper mold body fastened directly to the lower surface of the slide, an upper mold sheet plate and an upper mold fastened to the upper mold body to transfer pressure to the lower side. It may include an upper holder seat plate fastened to the upper surface of the blade holder to receive pressure from the upper mold seat plate.

Description

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

The present invention relates to a round bar cutting device, and more specifically, to a round bar cutting device capable of reducing the damage to the cut surface of the round bar due to eccentric load of the slide by always operating the slide with the same moving axis regardless of the load of the slide. About.

Round bars made of metal are cut to the required length for each part and used.

There are several ways to cut a round bar, but there is one way to cut it using a fixed blade and a moving blade.

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 is accurately lowered to a position corresponding to the fixed blade.

However, when a high-load slide is applied as a power source for lowering the moving blade, the slide may fall off the set moving axis due to an eccentric load on the slide despite the presence of the slide guide.

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

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

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

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

In order to achieve the object of the present invention, a round bar cutting device according to an embodiment of the present invention is a round bar cutting device that cuts a metal round bar material by transmitting power through a slide guide and a slide, and can move up and down on the upper side of the main frame. The slide guide in the form of a cylinder that is fixedly fixed, the slide guide having an inner circumferential surface that surrounds the entire outer circumferential surface of the slide and guides the slide to move along a preset movement axis, and is disposed below the main frame by the elevation of the slide. An upper blade and a lower blade for cutting the metal round bar, an upper blade holder receiving the upper blade inside, and reciprocating up and down by a pressing force of the slide, and disposed between the slide and the upper blade holder, and And a pressure transmission part for absorbing a contact shock between the upper blade holders and transmitting a pressing force of the slide to the upper blade holder, an oil film formed by lubricating oil between the slide guide and the slide, and the pressure transmission part An upper mold body that is directly fastened to the lower surface of the slide, an upper mold sheet plate that is fastened to the upper mold body to transmit pressure to the bottom, and an upper holder sheet that is fastened to the upper surface of the upper blade holder to receive pressure from the upper mold sheet plate. It may contain a plate.

Further, 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 to or smaller than the upper holder sheet plate.

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In addition, the slide guide may include a cylindrical body and a protrusion protruding outwardly at a lower end 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 a predetermined distance, the predetermined distance is 0.3 to 0.4 mm, and the lubricant may be supplied at the predetermined interval.

In the round bar cutting apparatus according to an embodiment of the present invention, even when the load of the slide increases, the slide can be lifted along a preset moving axis.

This prevents slide distraction (eccentric load), and the upper blade is accurately engaged with the lower blade to reduce damage to the cut surface of the round bar.

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.
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 diagram schematically illustrating a sequence in which a round bar cutting apparatus cuts a round bar according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating a cross-section AA of FIG.
5 is a view showing a cross section of a conventional slide and a slide guide according to an embodiment.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In order not to obscure the gist of the present invention, a detailed description of the components of the present invention that can be clearly understood and easily reproduced by a person skilled in the art by the prior art will be omitted.

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

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

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

The slide 120 may have a cylindrical shape fixed to the upper side of the main frame 1 so as to move up and down.

The slide guide 150 may have a cylindrical shape which is disposed outside the slide 120 to guide the slide 120 to move along a preset moving axis.

In addition, the slide guide 150 may include a cylindrical body 152 and a protrusion 153 protruding outwardly at a lower end of the body 152 so that the body 152 is fixed to the main frame 1.

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

In the drawings, a case in which one protrusion 153 is formed under the body 152 is shown, but this is an exemplary embodiment, but the present invention does not limit the shape, number, and position of the protrusion 153.

The body 152 may have a cylindrical shape surrounding the outer circumferential surface of the slide 120, but this is an exemplary embodiment of the present invention, but the shape of the body 152 is not limited.

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

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

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

When the predetermined distance is greater than 0.4mm, eccentricity may occur as the moving axis of the slide 120 and the slide guide 150 is twisted and the moving distance of the slide 120 increases.

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 is narrow for the lubricant to be inserted, so that the lift of the slide 120 is prevented by the frictional force between the slide 120 and the slide guide 150. It may not be smooth.

Therefore, the predetermined interval is an interval in which the slide 120 and the slide guide 150 can move up and down without shifting the moving shaft, but an oil film is formed between the slide 120 and the slide guide 150 by lubricating oil to prevent friction and wear. It can be a shortening interval.

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 as follows.

The conventional slide guide 150 ′ partially contacts and guides the outer surface of the slide 120 ′ in a flat shape, and the slide guide 150 according to the present invention entirely surrounds the outer circumferential surface of the slide 120.

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

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 to have a length of 530 mm, the contact area between the slide 120 and the slide guide 150 is 765,532

Becomes.

That is, when comparing the round bar cutting device of the same capacity, the above comparison can increase the guide area according to the vertical movement of the slide when the six-sided guide and the circular guide. Eccentricity can be prevented, and precision can be improved when cutting round bars.

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

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

The cassette 100 is an integral type that can be fastened or detached to the main frame 1 and can be simply replaced and used in case of obsolescence or failure.

The pressure transmission unit 200 is disposed between the slide 120 and the cassette 100 to absorb the impact 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 from being damaged in advance.

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

As shown in FIGS. 1 and 2, the upper pressure transmission unit includes 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. ) Can be included.

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

The pressure transfer unit 200 is to minimize 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 is a pressure transfer unit 100 It does not limit the configuration and shape of.

The upper mold body 160 is directly fastened to the lower side of the slide 120 by bolts, etc., and serves as a slide integrally with the slide 120, and the upper mold sheet plate 170 and the upper holder sheet plate 90 Contact directly and transmit the pressure by power.

The upper mold sheet plate 170 may be 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 receiving body receiving 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 consumer product, and thus, the slide 120 and the upper blade holder 20 ) Can be used semi-permanently by preventing abrasion or damage.

In addition, since only the upper blade holder 20 and the upper blade 30, which are vertically reciprocated by the slide 120, should be in direct or indirect contact with the slide 120, the upper blade holder 20 has an 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 to prevent pressure due to contact between the upper mold sheet plate 170 and the upper holder sheet plate 90. Can enable intensive delivery of

In addition, the upper mold sheet plate 170 is preferably located at the center of the upper holder sheet plate 90 to enable intensive 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 to be 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 installed to be detachably coupled to the upper blade 30 by a bolt fastening method.

Since the upper blade holder 20 is installed under the upper mold body 160, the upper blade holder 20 can also be moved up and down by the vertical motion 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 move up and down together with a hydraulic shock absorber (not shown) coupled to the upper mold body 160 installed on the upper blade holder 20. .

The lower insert guide 60 is a place to accommodate the round bar 10 by having a seating space, and can serve as a guide to facilitate cutting by the round bar 10 being inserted.

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 fit 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 does not necessarily have to be circular, but may have a polygonal shape.

The lower blade 80 may be disposed at the lower side of the lower insert guide 60, and the material clamp 50 may be disposed at 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 the upper blade descends to fix the round bar 10. ) Can be cut.

The lower blade holder 70 may surround 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 is also cylindrical or polygonal. I can.

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

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

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

The hydraulic shock absorber (not shown) may be coupled to one surface of the upper mold body 160 and the upper blade holder 20, respectively, 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, although one power unit is used according to an embodiment of the present invention, the hydraulic shock absorber (not shown), 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 drawn into the hydraulic shock absorber (not shown).

The force transmitted from the slide to the material clamp 50 can be relieved to some extent by the input of the hydraulic shock absorber (not shown).

That is, according to an 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 press and fix the round bar 10 with a certain force before the upper and lower blades 30 and 80 cut the round bar 10.

When the material clamp 50 presses and fixes the round bar 10 before cutting, the cut surface of the round bar 10 is smooth, and it is prevented from being discarded as a defect, thereby minimizing the remaining residue at the end.

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

Referring to FIG. 3, when the slide 120 moves downward along a preset moving axis by the slide guide 150 and presses the pressure transmitting part 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 are returned to their original positions.

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

That is, in the present invention, a 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 cassette 100 Including the configuration of the pressure transmission unit 200 for absorbing the contact impact between) and the slide 120, the shape and operation method of the configuration can be variously changed and applied.

Features, structures, effects, and the like described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Further, the features, structures, effects, and the like illustrated in each embodiment can be implemented by combining or modifying other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Accordingly, 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 described above, these are only examples and do not limit the present invention, and those of ordinary skill in the field to which the present invention pertains will not depart 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 modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present 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 seat 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 Shorts
152: body
153: protrusion
1: main frame

Claims (7)

In the round bar cutting device for cutting metal round bar material by transmitting power through a slide guide and a slide,
The slide in the form of a cylinder fixed to the upper side of the main frame so as to move up and down;
The slide guide covering the entire outer circumferential surface of the slide and having an inner circumferential surface guiding the slide to move along a predetermined moving axis;
An upper blade and a lower blade disposed under the main frame to cut the metal round bar by raising and lowering the slide;
An upper blade holder receiving the upper blade inside and reciprocating up and down by the pressing force of the slide; And
A pressure transmitting unit disposed between the slide and the upper blade holder, absorbing a contact impact between the slide and the upper blade holder, and transmitting a pressing force of the slide to the upper blade holder; and
An oil film formed by lubricating oil is formed between the slide guide and the slide,
The pressure transmission unit,
An upper mold body directly fastened to a lower surface of the slide;
An upper mold sheet plate fastened to the upper mold body to transmit pressure to a lower portion; And
Containing, round bar cutting device; fastened to the upper surface of the upper blade holder to receive pressure from the upper mold sheet plate. delete delete delete The method of claim 1,
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 equal to or smaller than the upper holder sheet plate, round bar cutting device. The method of claim 1,
The slide guide,
Cylindrical body; And
A protrusion protruding outwardly at a lower end of the body so that the body is fixed to the main frame; Containing, round bar cutting device. The method of claim 6,
The inner circumferential surface of the body and the outer circumferential surface of the slide are spaced apart by a predetermined distance,
The predetermined interval is 0.3 to 0.4mm,
The lubricating oil is supplied through the predetermined interval, round bar cutting device.

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