KR20170109410A - Cutting device for round bar - Google Patents

Cutting device for round bar Download PDF

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Publication number
KR20170109410A
KR20170109410A KR1020160033499A KR20160033499A KR20170109410A KR 20170109410 A KR20170109410 A KR 20170109410A KR 1020160033499 A KR1020160033499 A KR 1020160033499A KR 20160033499 A KR20160033499 A KR 20160033499A KR 20170109410 A KR20170109410 A KR 20170109410A
Authority
KR
South Korea
Prior art keywords
round bar
blade
pressing
pressing body
lower mold
Prior art date
Application number
KR1020160033499A
Other languages
Korean (ko)
Inventor
이춘호
Original Assignee
동은단조(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 동은단조(주) filed Critical 동은단조(주)
Priority to KR1020160033499A priority Critical patent/KR20170109410A/en
Publication of KR20170109410A publication Critical patent/KR20170109410A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/04—Shearing machines or shearing devices cutting by blades which move parallel to themselves having only one moving blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F13/00—Splitting wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D35/00—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools
    • B23D35/001—Tools for shearing machines or shearing devices; Holders or chucks for shearing tools cutting members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)

Abstract

The present invention relates to a round bar cutting device for cutting a long bar having a long length into a predetermined length and, more specifically, to a round bar cutting device which has a lower mold blade vertically separated into an upper pressurizing body and a lower supporting body to prevent the round bar from being shaken by a gap with the lower mold blade when cutting the round bar sequentially passing through a lower mold assembly and the lower mold blade with an upper mold blade, and has a pressing means for pressing the upper pressurizing body downward to pressurize the round bar. The round bar cutting device comprises: a main body; a plurality of transfer rollers installed to be vertically spaced apart from each other on one side of the main body to transfer a round bar; a lower mold assembly installed on one side of the transfer roller and having a through-hole through which the round bar passes at the center thereof; a lower mold blade installed on an end of the lower mold assembly and having a supporting hole for passing and supporting the round bar at the center thereof; and an upper mold blade installed on the upper side of the lower mold blade to be movable up and down to cut an end of the round bar. The lower mold blade includes: a lower supporting body fixated to an end of the lower mold assembly and supporting the lower side of the round bar; an upper pressurizing body installed to be spaced apart from an upper part of a supporting unit by a predetermined distance and supporting the upper side of the round bar; and an elastic member installed between the lower supporting body and the upper pressurizing body to elastically support the upper pressurizing body upward, wherein a pressing means is installed on the upper side of the upper pressurizing body to press the upper pressurizing body downward to prevent a gap between the supporting hole and the round bar from being generated when the round bar is cut by the upper mold blade.

Description

{Cutting device for round bar}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round bar cutting apparatus for cutting a long round bar into a predetermined length, and more particularly, to a round bar cutting apparatus for cutting a round bar having a long length, And a pushing means for pushing the upper pressing body downward to press the round bar so as not to rock by the upper pressing body and the lower supporting body.

Generally, when manufacturing machine parts made of metal used in automobiles, ships, and plants, various processing methods are adopted depending on the purpose and use of the machine parts. The above-mentioned processing methods include forging, rolling, extrusion, pressing, and lathe processing.

As a metal material used in these various processing methods, a round bar having a certain length is mainly used. The round bar is obtained by cutting a round bar having a length of several meters to a predetermined length suitable for processing using a round bar conveying device.

On the other hand, the round bar conveying device is a structure in which a round bar passing sequentially through a lower inner diameter of a lower die assembly and a lower inner die is cut by a lower blade blade and a vertical blade moving up and down.

At this time, a clearance is required between the inner diameter of the lower die assembly and the outer diameter of the round bar so that the round bar smoothly passes through the center inner diameter of the lower assembly and the lower blade, so that the inner diameter of the lower assembly and the lower blade are formed larger than the outer diameter of the round bar have.

However, since there is a clearance between the lower blade and the round bar as described above, there is a problem that the cut surface of the round bar cut by the upper blade does not become a vertical surface, the cut length of the round bar is not constant, or the round bar is deformed.

That is, when the round bar is cut by the upper mold blade, the lower bar blade instantaneously swings downward to the lower side where the cutting force is applied while the round bar is properly supported by the clearance.

Therefore, in order to solve the above-mentioned problem caused by the gap between the upper mold blade and the round bar and to improve the cutting quality of the round bar, it is necessary to apply a technique capable of cutting the round bar in a state in which the round bar is prevented from being rocked.

Korean Utility Model Publication No. 20-1992-0004839, July 20, 1992.

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of cutting a round bar by cutting a lower blade into upper and lower portions, And the upper portion is pressed downwardly by a pushing means to press and fix the round bar.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood from the following description.

In order to accomplish the above object, the present invention provides a round bar cutting apparatus comprising: a main body; a plurality of feed rollers vertically spaced apart from one another on the main body to feed a round bar; A lower blade mounted on an upper end of the lower blade and formed with a support hole for supporting a circular rod through the center of the lower blade; Wherein the lower blade is fixed to an end of the lower mold assembly and includes a lower support for supporting a lower side of the round bar and a lower support for supporting a lower side of the round bar at a predetermined distance from the upper side of the support, An upper pressurizing member for supporting the upper supporting body and the upper pressing body, And the upper pressing body is pressed downward so that no clearance is formed between the supporting hole and the round bar when the round bar is cut by the upper blades in the upper side of the upper pressing body, And a pressing means is provided to press the surface of the substrate.

The pressing means comprises a cylinder provided on one side of the upper pressing body and a pressing piece provided on the rod end of the cylinder and pressing the upper surface of the upper pressing body downwardly in accordance with the operation of the cylinder .

The upper surface of the upper pressing body is formed as a second inclined surface inclined downward from one end to the other end so as to correspond to the first inclined surface .

A guide block having a guide surface formed on its inner side so as to vertically move up and down when the upper pressing body is pressed or released by the pressing means is further provided on both upper sides of the lower supporting body and on both sides of the upper pressing body, And a contact surface that is in contact with the guide surface is formed.

The state of the feed roller, the upper blade and the pressing means to receive state information according to the operating state of the feed roller, the upper blade and the pressing means so that the upper blade is lowered and cuts the round bar in a state in which the pressing means is operated, And a controller for controlling the operation of the means.

The circular bar cutting apparatus according to the present invention constructed as described above further comprises a pressing means for pressing down the upper pressing body of the lower blade so as to eliminate the clearance between the lower blade and the round bar so that the round bar is operated before being cut by the upper blade, So that the vertical length of the cut surface of the round bar can be maintained, the cut length of the round bar can be kept constant, and the deformation of the round bar can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing a round bar cutting apparatus according to a preferred embodiment of the present invention. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]
Fig. 3 is an exemplary view showing a state in which a round bar is pressed and supported by a recess in Fig. 2; Fig.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round bar cutting machine for cutting a round bar to be a material of a metal machine part constituting an automobile, a ship, a plant, etc. to a predetermined length.

Particularly, the round bar cutting apparatus according to the present invention improves the cutting quality of the round bar by preventing the round bar from swinging due to the clearance between the round bar and the lower bar blade when cutting force is applied to the round bar for cutting the round bar It is a big feature.

The feature of this feature is that the lower blade is vertically separated by the upper pressing body and the lower supporting body and the upper pressing body is installed so as to be pivotable up and down at the upper portion of the lower supporting body and an elastic member is provided between the upper pressing body and the lower supporting body, And a pressing means for pressing the round bar by the upper pressing body and the lower supporting body by pushing the upper pressing body downward is provided on the upper side of the lower pressing body.

Therefore, by operating the pressing means, the upper pressing body is swung downward, and the end portion of the round bar is cut into the upper blade in a pressed state so that the round bar is not pivoted to the upper pressing body and the lower support, The cutting length of the round bar can be constantly maintained, and deformation such as warping of the round bar can be prevented.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a round bar cutting apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1, a round bar cutting apparatus 100 according to a preferred embodiment of the present invention cuts a round bar having a length of several meters to a predetermined length, and includes a main body 10, a feed roller 20, A lower mold assembly 30, a lower mold blade 40, an upper mold blade 50, an elastic member 60 and a pressing means 60.

First, the main body 10 is placed on the floor, and the constitutions including the feed roller 20, the lower mold assembly 30, the lower mold blade 40, the upper mold blade 50 and the pressing means 60, Provide installation space for stable operation.

To this end, the main body 10 is provided with a mounting space (not shown) and a fitting means (not shown) in which the above-described configurations can be installed and a mounting means (not shown) which can be stably supported on the floor.

Next, as shown in FIG. 1, a plurality of conveying rollers 20 are installed on one side of the main body 10 at a predetermined interval, and are arranged at upper and lower ends in a front-back multi-stage manner to horizontally convey the round bar.

That is, the conveying roller 20 rotates in one direction, and its outer surface rubs against the outer surface of the round bar B to convey the round bar B horizontally. However, a drive motor (not shown) for providing a rotational power is provided on the rotary shaft of the conveying roller 20.

Next, the lower mold assembly 30 is installed at one side of the conveying roller 20 and horizontally guides the round bar B horizontally conveyed by the conveying roller 20 to guide it.

To this end, the lower mold assembly 30 is formed in a cylindrical shape as shown in FIG. 1, and a through hole 31 through which the round bar B passes in the longitudinal direction is formed through the center hole. That is, the lower mold assembly 30 horizontally guides the round bar B through the through hole 31 formed through the center.

The inner diameter of the through hole 31 of the lower mold assembly 30 is larger than the outer diameter of the round bar B so that a clearance exists between the through hole 31 and the outer surface of the round bar B so that the round bar B can pass smoothly. .

The lower mold blade 40 is installed on one side of the lower mold assembly 30 and horizontally passes a round bar B horizontally guided by the lower mold assembly 30 to cut the upper mold blade 50 So as not to fluctuate when applied.

To this end, the lower blade 40 is composed of an upper pressing body 41, a lower pressing body 42, and an elastic member 43, as shown in Figs.

The upper pressing body 41 and the lower pressing body 42 have a support hole 44 which is vertically engageable and supports the round bar B in the longitudinal direction through the center.

That is, a semicircular upper support hole 44a is recessed at the lower center of the upper pressurizing member 41, and a semicircular lower support hole 44b is recessed at the central upper side of the lower pressing member 42, 44a and the lower support hole 44b penetrate and support the round bar B in a circular shape in accordance with the engagement of the upper pressing member 41 and the lower pressing member 42. [

The elastic member 60 is provided on both sides of the upper pressing body 41 and the lower pressing body 42 to elastically support the upper pressing body 41 upward on the lower pressing body 42. [

That is, the elastic member 60 elastically supports the upper pressing body 41 at a predetermined height above the lower pressing body 42 so that the upper pressing body 41 can be pressed downward by the pressing means 60 to be described later will be.

However, when the upper pressing body 41 is pressed downward by the pressing means 60 to be described later and the elastic member 60 is compressed, the round bar B can be pressed and fixed by the inner surface of the supporting hole 44 The upper and lower diameters of the support holes 44 are preferably set to be smaller than the diameter of the round bar (B).

When the upper pressing body 41 is released from the pressurization by the pressing means 60 to be described later, the upper and lower pressures of the support holes 44 are adjusted so that the round bar B can be smoothly moved along the support holes 44 Is preferably larger than the diameter of the round bar (B).

Meanwhile, the lower mold blade 40 may further include a guide block 45 as shown in FIG. The guide block 45 is fixed to upper portions of both sides of the lower support 42 and has a vertical guide surface 45a formed therein.

That is, the guide block 45 is guided by the pushing means 60, which will be described later, so that the upper pressing body 41 can be lowered or raised vertically when the pressure is applied to the upper pressing body 41 or when the applied pressure is released. .

At this time, on both sides of the upper pressing body 41, a contact surface 41a, which is in contact with the guide surface 45a of the guide block 45, is preferably formed. Therefore, the vertical pressing direction of the upper pressing body 41 is smooth while the contact surface 41a is guided vertically by being in contact with the guide surface 45a of the guide block 45.

1, the upper mold blade 50 is mounted on one side of the lower mold blade 40 to vertically move the end of the round bar B pressed and supported by the lower mold blade 40, And cut to a predetermined length.

For this, the upper blade 50 is formed in a square block shape having a front-to-rear width corresponding to the cutting length of the round bar B and is connected to the rod end of the first cylinder 52 for upward and downward vertical movement, A semicircular cut groove 51 corresponding to the outer surface of the round bar B is formed at the center thereof.

At this time, though not shown in the drawing, it is a matter of course that guide means for guiding vertical movement of the upper blade 50 is provided at one side or both sides of the upper blade 50.

The upper blade 50 may be further formed with a cutting groove 51 at an upper center and a left center and a right center so that when the cutting blade 51 is worn or deformed due to long- So that the remaining cutting grooves 51 can be used.

1 and 2, the pushing means 60 is provided on the upper pressurizing body 41 so that when the upper mold blade 50 cuts the round bar B, the round bar B swings The upper pressurizing member 41 is vertically pushed downward.

To this end, the pushing means 60 is constituted by a second cylinder 61 and a pushing piece 62 connected to the rod end of the second cylinder 61, as shown in Fig. That is, the pressing means 60 presses the upper pressing body 41 downward while moving the pressing piece 62 horizontally according to the operation of the second cylinder 61. [

When the second cylinder 61 is not operated, the state as shown in FIG. 2 is maintained and the conveying of the round bar B is smoothly performed. When the second cylinder 61 is operated, The upper barrel member 62 presses the upper pressing body 41 downward to press the circular bar B and press it to cut the circular bar B into a predetermined length by the upper die 50 without swinging.

The lower surface of the pushing piece 62 and the upper surface of the upper pressing body 41 are formed as inclined surfaces corresponding to each other so that the upper pressing body 41 can move vertically and vertically in accordance with the horizontal movement of the pressing means 60 .

2, the lower surface of the pressing piece 62 is constituted by a first inclined surface 62a inclined upward from the one end to the other end, and the upper surface of the upper pressing body 41 is inclined with respect to the first inclined surface 62a, And a second inclined surface 41b inclined downward from the one end to the other end so as to correspond thereto.

The first inclined face 62a which is the lower face of the pressing piece 62 and the second inclined face 41b which is the upper face of the upper pressing body 41 are always in tight contact with each other, Can be accurately and quickly performed.

Further, the round-wire cutting apparatus according to the preferred embodiment of the present invention further includes a controller (not shown) for controlling the operation of the pressing means 60. The controller is for causing the pushing means 60 to operate before the upper blade 50 is operated after the feed roller 20 is stopped.

To this end, the controller includes a receiving section for receiving status information according to the operation of the conveying roller 20, the upper blade 50 and the pressing means 60, and the conveying roller 20 and the upper blade 50 received by the receiving section. A processing unit for determining the operation order of the conveying roller 20 and the upper blade 50 and the pressing means 60 in accordance with the state information of the conveying roller 60 and the pressing means 60, 20 and the upper blade 50 and the pushing means 60. The control means controls the operation of the upper blade 20,

The pressing means 60 is operated by the controller before the upper blade 50 of the upper blade 50 is operated after the operation of the feed roller 20 is stopped by the controller so that the round bar B is rotated by the lower blade 40 It is cut by the upper mold blade 50 in a state of being pressed and supported without swinging.

In this drawing, a description 70 is a drop guide plate that guides a round bar B which is cut to a predetermined length by the upper mold blade 50 and supports the round bar B and guides the same.

As described above, the round bar cutting apparatus according to the present invention is provided with a pressing means for pressing down the upper pressing body constituting the lower blade to eliminate the clearance between the lower blade and the round bar, so that the round bar is operated before being cut by the upper blade, It can be cut without rocking to greatly improve the quality of the cut surface.

The above-described embodiments are merely illustrative, and various modifications may be made by those skilled in the art without departing from the scope of the present invention.

Therefore, the true technical protection scope of the present invention should include not only the above embodiments but also various other modified embodiments according to the technical idea of the invention described in the following claims.

100: Round bar cutting device
10: Body
20: Feed roller
30: Lower mold assembly
31: Through hole
40: Lower die blade
41: Upper pressing body
41a: contact surface
41b: second inclined surface
42: Lower support
43: elastic member
44: Support hole
44a: Upper support hole
44b: Lower support hole
45: guide block
45a: guide face
50: Hollow blade
51: Cutting groove
52: second cylinder
60: push means
61: second cylinder
62:
62a: a first inclined surface
70:
B: Round bar

Claims (5)

A lower assembly disposed at one side of the main body and having a plurality of feed rollers vertically spaced apart to feed a round bar and formed at one side of the feed rollers and having a through hole through which a round bar passes, A lower blade installed at an end of the lower blade and formed with a support hole passing through a round bar at its center, and a upper blade that is vertically installed on the lower blade to cut an end of the round bar,
The lower blade
An upper pressing body which is fixed to an end of the lower mold assembly and supports the lower side of the round bar, an upper pressing body which is provided at a predetermined distance from the upper side of the supporting portion and supports the upper side of the round bar, And an elastic member provided on the upper pressing body to elastically support the upper pressing body upward,
On the upper side of the upper pressing body
And a pressing means for pressing the upper pressing member downward is provided so that a clearance between the support hole and the round bar is not generated when the round bar is cut by the upper blade. The method according to claim 1,
The pressing means
A cylinder provided on one side of the upper pressing body and a pressing piece provided on a rod end of the cylinder and pressing the upper surface of the upper pressing body downwardly in accordance with the operation of the cylinder, Device. The method according to claim 1,
On the other hand,
A first inclined surface inclined upward from one end to the other end,
The upper surface of the upper pressing body
And a second inclined surface inclined downward from one end to the other end so as to correspond to the first inclined surface. The method according to claim 1,
On both sides of the lower support,
Further comprising a guide block having a guide surface formed on its inner side so as to vertically move up and down when the upper pressing body is pressed or released by the pressing means,
On both sides of the upper pressing body
And a contact surface contacting the guide surface of the guide block is formed. The method according to claim 1,
The state of the feed roller, the upper blade and the pressing means to receive state information according to the operating state of the feed roller, the upper blade and the pressing means so that the upper blade is lowered and cuts the round bar in a state in which the pressing means is operated, Further comprising a controller for controlling the operation of the means.
KR1020160033499A 2016-03-21 2016-03-21 Cutting device for round bar KR20170109410A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109201968A (en) * 2018-11-08 2019-01-15 徐州市凯诺机械有限公司 A kind of Mobile reinforcement cutting machine for building
KR20190052961A (en) 2017-11-09 2019-05-17 이영호 Manufacturing apparatus for round bar
CN110153331A (en) * 2018-02-23 2019-08-23 淄博名堂教育科技有限公司 A kind of anti-bending reinforcing bar cutter device
CN110695262A (en) * 2019-11-12 2020-01-17 中国建筑第二工程局有限公司 Novel reinforcing bar cutting equipment for construction
EP3892788A1 (en) * 2020-04-08 2021-10-13 Felix L. Sorkin Shearing apparatus and process for post tensioning tendon
KR20220135407A (en) * 2021-03-30 2022-10-07 (주)성하스틸 Rebar cutting device that guarantees the convenience of blade replacement
CN118616615A (en) * 2024-06-17 2024-09-10 江苏南瑞银龙电缆有限公司 A cutting device for manufacturing electric wires and cables

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190052961A (en) 2017-11-09 2019-05-17 이영호 Manufacturing apparatus for round bar
CN110153331A (en) * 2018-02-23 2019-08-23 淄博名堂教育科技有限公司 A kind of anti-bending reinforcing bar cutter device
CN109201968A (en) * 2018-11-08 2019-01-15 徐州市凯诺机械有限公司 A kind of Mobile reinforcement cutting machine for building
CN110695262A (en) * 2019-11-12 2020-01-17 中国建筑第二工程局有限公司 Novel reinforcing bar cutting equipment for construction
EP3892788A1 (en) * 2020-04-08 2021-10-13 Felix L. Sorkin Shearing apparatus and process for post tensioning tendon
US11548080B2 (en) 2020-04-08 2023-01-10 Felix Sorkin Shearing apparatus and process for post tensioning tendon
KR20220135407A (en) * 2021-03-30 2022-10-07 (주)성하스틸 Rebar cutting device that guarantees the convenience of blade replacement
CN118616615A (en) * 2024-06-17 2024-09-10 江苏南瑞银龙电缆有限公司 A cutting device for manufacturing electric wires and cables

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