WO2014042419A1 - Method for forming rounded corner - Google Patents

Method for forming rounded corner Download PDF

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Publication number
WO2014042419A1
WO2014042419A1 PCT/KR2013/008205 KR2013008205W WO2014042419A1 WO 2014042419 A1 WO2014042419 A1 WO 2014042419A1 KR 2013008205 W KR2013008205 W KR 2013008205W WO 2014042419 A1 WO2014042419 A1 WO 2014042419A1
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WO
WIPO (PCT)
Prior art keywords
pair
plate
parallel
edges
bending
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PCT/KR2013/008205
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French (fr)
Korean (ko)
Inventor
라민수
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라성산업 주식회사
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Publication of WO2014042419A1 publication Critical patent/WO2014042419A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/74—Making other particular articles frames for openings, e.g. for windows, doors, handbags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00

Definitions

  • the present invention relates to a method of forming round shaped corners.
  • the above object is a method of forming a corner having a round shape by using a plate having a predetermined width and length, the pair of parallel sides spaced apart from each other in parallel to the longitudinal direction of the plate, the pair of parallel A pair of vertical edges each having a length smaller than an interval between the sides and perpendicular to the pair of parallel edges with the pair of parallel edges interposed therebetween, and the parallel and adjacent vertical edges respectively tilted Drilling a perforation part on the plate including a through hole having an octagonal cross-section having two pairs of inclined sides to form a connection; Bending the plate inwardly along the extension line of each of the parallel edges, bending the plate inwardly along the imaginary extension line of each vertex of the pair of vertical edges adjacent to any one of the pair of parallel edges; Bending the plate inwards along an imaginary extension line between the remaining vertices of the pair of vertical edges; It is achieved by a method of forming a corner of the round shape characterized in that it comprises the step of bending the inward
  • the drilling portion further comprises a communication hole formed perpendicular to the longitudinal direction of the plate on at least one of the parallel sides of the pair of parallel edges so as to communicate with the through hole, the communication hole together with the through hole Perforated in plate.
  • the corner is curved and has an arc corresponding to the length of the parallel side.
  • the perforations include one or more pairs, and each perforation is formed at intervals along the longitudinal direction of the plate.
  • the work can be simplified to increase productivity, reduce risks caused by edges, and improve appearance.
  • FIG. 1 is a plan view of a rectangular frame manufactured by a method of forming rounded corners according to an embodiment of the present invention
  • FIG. 2 is an enlarged plan view of a portion “A” of FIG. 1;
  • FIG. 3 is a perspective view of a perforated part formed on a strip-shaped plate
  • FIG. 4 is an enlarged view illustrating main parts of FIG. 3;
  • FIG. 5 is an enlarged perspective view of main parts in a state in which the plate of FIG. 3 is bent along a length direction of the plate;
  • FIG. 6 is an enlarged perspective view of a main portion of the bent sheet of FIG.
  • FIG. 7 is a perspective view of a pallet to which a rectangular frame manufactured by a method of forming rounded corners according to the present invention is applied as an embodiment.
  • a strip-shaped rectangular frame as an embodiment will be described.
  • the present invention is not limited to the rectangular frame, and it is apparent that the present invention can be applied to other polygonal frames having a plurality of corners. It is.
  • 1 and 2 illustrate a rectangular frame made by a method of forming rounded corners of the present invention.
  • the rectangular frame 1 has a round shape in which three corners A of four corners are bent in accordance with the present invention so that the outside of each corner A has a constant radius of curvature, and the other one corner B is welded.
  • it has a structure that forms a frame (1) as a whole.
  • the outside of the edge (B) to be welded has a round shape by grinding with a grinder after welding.
  • the plate 11 is cut to a length corresponding to the length of the entire side of the rectangular frame (1).
  • each perforation 21 corresponds to three corners A of the rectangular frame 1. Perforated in position.
  • the perforation portion 21 includes a through hole 23 of the octagonal cross-sectional shape.
  • the through-holes 23 have a pair of parallel edges 25a and 25b spaced apart from each other in parallel to the longitudinal direction of the plate 11 and a pair of parallel edges 25a and 25b interposed therebetween.
  • a pair of vertical sides 27a and 27b perpendicular to the parallel sides 25a and 25b, respectively, and two connecting the adjacent parallel sides 25a and 25b and vertical sides 27a and 27b in an inclined manner, respectively; Pair of inclined sides 29a, 29b, 29c, and 29d.
  • the pair of vertical edges 27a and 27b has a length smaller than the gap between the pair of parallel edges 25a and 25b.
  • Each of the inclined sides 29a, 29b, 29c, and 29d has an angle of 45 degrees with respect to the parallel sides 25a and 25b corresponding to the rectangular cross-sectional shape of the frame 1.
  • the drilling portion 21 further includes a communication hole 33, the communication hole 33 is perpendicular to the longitudinal direction of the plate member 11 on one side parallel side 25a to communicate with the through hole 23. Is formed.
  • the communication hole 33 has a long hole shape whose end portion has a semicircular cross-sectional shape, and the width of the communication hole 33 has the same length as that of the parallel edge 25a. The length has a certain length that does not communicate with the edge of the plate (11).
  • the communication hole 33 serves to bend smoothly when bending the plate 11 perpendicular to the longitudinal direction of the plate 11 with respect to the perforated portion 21, to mirror the outside of the corner (A) Form a round.
  • the communication hole 33 can also be formed in the other parallel side edge 25b.
  • the communication hole 33 may have a semicircular or rectangular cross-sectional shape.
  • the perforation part 21 includes the communication hole 33, but the communication hole 33 may be selectively interposed.
  • the interval between the parallel edge 25b where the communication hole 33 is not formed and the edge of the plate 11 among the pair of parallel edges 25a and 25b has the same length as the vertical edges 27a and 27b. It is preferable. As a result, when the plate 11 is bent inward with respect to the perforated portion 21 along the longitudinal direction of the plate 11, a rectangular cylindrical case may be formed.
  • the plate 11 having the perforations 21 formed therein is bent inward along the longitudinal direction of the plate 11. That is, the sheet member 11 is bent inward along the first bent lines 41a and 41b formed on the extension lines of the parallel edges 25a and 25b, and a pair of vertical edges 27a adjacent to one side parallel edge 25a are formed.
  • the sheet 11 is bent inward along the second bent line 43 formed on the virtual extension lines of the vertices of each of the two vertices, and on the virtual extension lines of the remaining vertices of the pair of vertical edges 27a and 27b.
  • the plate 11 is bent inward along the third bend line 45 formed in the inner portion.
  • the inwardly bent plate 11 is bent inwardly perpendicular to the longitudinal direction of the plate 11 with respect to each of the perforations 21, that is, the angle of each perforated portion 21.
  • the inclined sides 29a, 29b, 29c, and 29d are bent to form three corners A of the rectangular frame 1.
  • the plate 11 is smoothly bent by the communication hole 33, so as shown in Figure 6 the outer edge of each corner (A) is a circular arc corresponding to the length of the parallel edges (25a, 25b) It is curved and has a strip
  • the plate 11 when the communication hole 33 is not formed, the plate 11 bent inward along the longitudinal direction of the plate 11 perpendicular to the longitudinal direction of the plate 11 centering on the perforations 21.
  • the outside of the corner A is bent in a round shape corresponding to the lengths of the parallel edges 25a and 25b.
  • the strip-shaped rectangular frame (1) This is done.
  • the edge B to be welded may be formed in a round shape by grinding with a grinder after welding.
  • the perforations are a pair or at intervals along the longitudinal direction of the plate corresponding to the cross-sectional shape of the frame Four or more may be formed.
  • the angle of the inclined side may also be changed to correspond to the cross-sectional shape of the frame.
  • FIG. 7 shows a perspective view of a pallet in which a rectangular frame made by a method of forming rounded corners according to the invention is applied as an example.
  • the pallet forming the rectangular frame has a rectangular cross-sectional upper frame 1 and a lower side of the pillar frame 3 manufactured by a method of forming rounded corners according to the present invention.
  • the upper frame 1 has a structure in which a plurality of bottom plates 7 having a predetermined width and length are mounted.
  • the round-shaped corner forming operation is simple to increase productivity as well as to prevent slippage when loading cargo, to reduce the risk of corners, and to improve the appearance of the corners.

Abstract

The present invention relates to a method for forming a rounded corner using a plate material having a predetermined width and a predetermined length. The present invention includes: a step of perforating a perforation section having a pair of parallel sides which are parallel to and spaced from each other with respect to the lengthwise direction of the plate material, a pair of vertical sides the length of which is shorter than the gap between the pair of parallel bars interposed therebetween, and which form right angles with respect to the pair of parallel bars, and two pairs of oblique sides which respectively connect the parallel sides and the vertical sides adjacent to each other with each other at an angle, wherein the perforation section has a through-hole having an octagonal cross-sectional shape in the plate material; a step of bending the plate material inward along a line extending from each of the parallel sides, bending the plate material inward along a virtual line extending between the vertices of the pair of vertical sides adjacent to one of the pair of parallel sides, and bending the plate material inward along a virtual line extending between the other vertices of the pair of vertical sides; and a step of forming the corner by bending the plate material which is bent inward in such a manner that the oblique sides face each other.

Description

라운드 형상의 모서리를 형성하는 방법How to form rounded corners
본 발명은 라운드 형상의 모서리를 형성하는 방법에 관한 것이다.The present invention relates to a method of forming round shaped corners.
통상, 띠 형상의 다각형 프레임을 제조하는 경우, 프레임에는 복수의 모서리가 형성된다.Usually, when manufacturing a strip | belt-shaped polygonal frame, several edges are formed in a frame.
이하에서는, 일 예로서 띠 형상의 사각형 프레임을 제조하는 경우에 대해 설명하기로 한다.Hereinafter, a case of manufacturing a strip-shaped rectangular frame as an example will be described.
사각형 프레임을 제조함에 있어서, 띠 형상을 갖는 금속 재질의 4개의 판재를 사각 형태로 배치한 후, 인접하는 한 쌍의 판재들을 상호 용접하여 완성한다.In manufacturing a rectangular frame, four strips of strip-shaped metal are arranged in a square shape, and then a pair of adjacent plates is welded to each other.
그러나, 각 판재들을 용접하는 경우, 서로 맞대어 결합되는 모서리 양쪽의 판재가 전후면을 번갈아가며 용접할 때, 용접 부위가 뒤틀려 불량이 발생할 염려가 많으며 위험요소가 발생할 여지가 있다.However, when welding each plate, when the plate on both sides of the corner to be joined to each other alternately welded front and back, there is a high risk of defects due to the welding portion is warped and there is a risk of occurrence.
이러한 문제점을 극복하기 위한 노력의 일환으로서 용접과 위험요소를 최소화하기 위해, 판재에 3개의 'V'자 단면형상의 노치를 간격을 두고 형성한 후, 각 노치를 중심으로 절곡하고 나서 판재의 양측 자유단부를 용접하여 사각형 프레임을 제조하였다.As part of efforts to overcome these problems, in order to minimize welding and risk factors, three 'V' cross-sectional notches are formed on the plate at intervals, and then bent around each notch, and then both sides of the plate The free end was welded to make a rectangular frame.
그런데, 상기와 같은 종래 방법들에 의해 제조된 사각형 프레임은 각 모서리가 날카롭게 노출되고 그 외관 또한 미려하지 않으므로, 이에 각 모서리의 외측이 라운드 형상을 갖도록 각 모서리의 외측을 그라인더로 연마하고 있는 실정이다.However, since the rectangular frame manufactured by the conventional methods as described above is sharply exposed at each corner and its appearance is not beautiful, the outside of each corner is polished with a grinder so that the outside of each edge has a round shape. .
따라서, 종래 방법들에 의해 사각형 프레임의 각 모서리를 라운드 형상으로 형성하기 위해서는, 각 모서리의 외측을 그라인더로 일일이 연마해야 하므로, 작업이 복잡하고 생산성이 저하되는 문제점이 있다.Therefore, in order to form each corner of the rectangular frame in a round shape by conventional methods, it is necessary to polish the outside of each corner with a grinder one by one, and thus there is a problem in that work is complicated and productivity is lowered.
본 발명의 목적은, 작업이 간단하여 생산성을 증대시키고, 모서리에 의한 위험요소를 감소시키며, 외관을 향상시키는 라운드 형상의 모서리를 형성하는 방법을 제공하는 것이다.It is an object of the present invention to provide a method of forming rounded corners which simplify the operation to increase productivity, reduce the risk of cornering and improve the appearance.
상기 목적은, 일정 폭과 길이를 갖는 판재를 이용하여 라운드 형상의 모서리를 형성하는 방법에 있어서, 상기 판재의 길이방향에 대해 평행을 이루며 상호 이격하는 한 쌍의 평행변과, 상기 한 쌍의 평행변 사이의 간격보다 작은 길이를 가지며 상기 한 쌍의 평행변을 사이에 두고 상기 한 쌍의 평행변에 대해 각각 수직을 이루는 한 쌍의 수직변과, 인접하는 상기 평행변과 상기 수직변을 각각 경사를 이루며 연결하는 두 쌍의 경사변을 갖는 8각단면형상의 관통공을 포함하는 천공부를 상기 판재에 천공하는 단계와; 상기 각 평행변의 연장선상을 따라 상기 판재를 내향 절곡하고, 상기 한 쌍의 평행변 중 어느 하나의 평행변에 인접한 상기 한 쌍의 수직변의 각 꼭지점끼리의 가상 연장선상을 따라 상기 판재를 내향 절곡하고, 상기 한 쌍의 수직변의 각 나머지 꼭지점끼리의 가상 연장선상을 따라 상기 판재를 내향 절곡하는 단계와; 상기 내향 절곡된 판재를 상기 각 경사변이 마주보도록 절곡하여 모서리를 형성하는 단계를 포함하는 것을 특징으로 하는 라운드 형상의 모서리를 형성하는 방법에 의해 달성된다.The above object is a method of forming a corner having a round shape by using a plate having a predetermined width and length, the pair of parallel sides spaced apart from each other in parallel to the longitudinal direction of the plate, the pair of parallel A pair of vertical edges each having a length smaller than an interval between the sides and perpendicular to the pair of parallel edges with the pair of parallel edges interposed therebetween, and the parallel and adjacent vertical edges respectively tilted Drilling a perforation part on the plate including a through hole having an octagonal cross-section having two pairs of inclined sides to form a connection; Bending the plate inwardly along the extension line of each of the parallel edges, bending the plate inwardly along the imaginary extension line of each vertex of the pair of vertical edges adjacent to any one of the pair of parallel edges; Bending the plate inwards along an imaginary extension line between the remaining vertices of the pair of vertical edges; It is achieved by a method of forming a corner of the round shape characterized in that it comprises the step of bending the inwardly bent plate member facing each inclined side.
여기서, 상기 천공부는 상기 관통공과 연통하도록 상기 한 쌍의 평행변 중 적어도 어느 하나의 평행변에 상기 판재의 길이방향에 대해 수직하게 형성된 연통공을 더 포함하며, 상기 연통공은 상기 관통공과 함께 상기 판재에 천공된다.Here, the drilling portion further comprises a communication hole formed perpendicular to the longitudinal direction of the plate on at least one of the parallel sides of the pair of parallel edges so as to communicate with the through hole, the communication hole together with the through hole Perforated in plate.
또한, 상기 모서리는 상기 평행변의 길이에 대응하는 원호를 가지며 만곡 형성된다.In addition, the corner is curved and has an arc corresponding to the length of the parallel side.
상기 천공부는 한 쌍 이상 포함하며, 상기 각 천공부는 상기 판재의 길이방향을 따라 간격을 두고 형성된다.The perforations include one or more pairs, and each perforation is formed at intervals along the longitudinal direction of the plate.
본 발명에 따르면, 작업이 간단하여 생산성을 증대시키고, 모서리에 의한 위험요소를 감소시키며, 외관을 향상시킬 수 있다.According to the present invention, the work can be simplified to increase productivity, reduce risks caused by edges, and improve appearance.
도 1은 일 실시예로서 본 발명에 따른 라운드 형상의 모서리를 형성하는 방법에 의해 제조된 사각형 프레임의 평면도,1 is a plan view of a rectangular frame manufactured by a method of forming rounded corners according to an embodiment of the present invention;
도 2는 도 1의 "A"부 확대 평면도,2 is an enlarged plan view of a portion “A” of FIG. 1;
도 3은 띠 형상의 판재에 천공부가 천공된 모습의 사시도,3 is a perspective view of a perforated part formed on a strip-shaped plate,
도 4는 도 3의 요부 확대도,4 is an enlarged view illustrating main parts of FIG. 3;
도 5는 도 3의 판재를 판재의 길이방향을 따라 절곡한 상태의 요부 확대 사시도,5 is an enlarged perspective view of main parts in a state in which the plate of FIG. 3 is bent along a length direction of the plate;
도 6은 도 5의 절곡된 판재를 천공부를 중심으로 절곡한 상태 요부 확대 사시도,6 is an enlarged perspective view of a main portion of the bent sheet of FIG.
도 7은 일 실시예로서 본 발명에 따른 라운드 형상의 모서리를 형성하는 방법에 의해 제조된 사각형 프레임이 적용된 팔레트의 사시도이다.7 is a perspective view of a pallet to which a rectangular frame manufactured by a method of forming rounded corners according to the present invention is applied as an embodiment.
이하, 첨부도면을 참조하여 본 발명의 바람직한 실시예를 설명한다.Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.
설명에 앞서, 이하에서는 일 실시예로서 띠 형상의 사각형 프레임을 제조하는 경우에 대해 설명하지만, 본 발명은 사각형 프레임에 한정하지 않고, 복수의 모서리를 갖는 기타 다각형 프레임에도 적용될 수 있음을 미리 밝혀 두는 바이다.Prior to the description, hereinafter, a case of manufacturing a strip-shaped rectangular frame as an embodiment will be described. However, the present invention is not limited to the rectangular frame, and it is apparent that the present invention can be applied to other polygonal frames having a plurality of corners. It is.
도 1 및 도 2에는 본 발명의 라운드 형상의 모서리를 형성하는 방법으로 제조된 사각형 프레임이 도시되어 있다.1 and 2 illustrate a rectangular frame made by a method of forming rounded corners of the present invention.
사각형 프레임(1)은 4개의 모서리 중 3개의 모서리(A)가 본 발명에 따라 절곡되어 각 모서리(A)의 외측이 일정 곡률 반경을 갖는 라운드 형상을 가지며, 나머지 1개의 모서리(B)는 용접되어, 이에 전체적으로 사각형의 프레임(1)을 형성하는 구조를 가진다. 여기서, 용접되는 모서리(B)의 외측은 용접 후 그라인더로 연마하여 라운드 형상을 갖게 된다.The rectangular frame 1 has a round shape in which three corners A of four corners are bent in accordance with the present invention so that the outside of each corner A has a constant radius of curvature, and the other one corner B is welded. Thus, it has a structure that forms a frame (1) as a whole. Here, the outside of the edge (B) to be welded has a round shape by grinding with a grinder after welding.
이하에서는, 도 1의 사각형 프레임(1)에 있어서 일부 모서리를 본 발명에 의해 라운드 형상으로 형성하는 방법에 대해 설명한다.Hereinafter, a method of forming some corners in a round shape in the rectangular frame 1 of FIG. 1 by the present invention will be described.
먼저, 일정 폭을 갖는 판재(11)를 준비한 후, 사각형 프레임(1)의 전체 변의 길이에 해당하는 길이로 판재(11)를 절단한다.First, after preparing the plate 11 having a predetermined width, the plate 11 is cut to a length corresponding to the length of the entire side of the rectangular frame (1).
다음, 도 3 및 도 4에 도시된 바와 같이 판재(11)에 3개의 천공부(21)를 천공하고, 각 천공부(21)는 사각형 프레임(1)의 3개의 모서리(A)에 대응하는 위치에 천공된다.Next, as shown in FIGS. 3 and 4, three perforations 21 are drilled on the plate 11, and each perforation 21 corresponds to three corners A of the rectangular frame 1. Perforated in position.
한편, 천공부(21)는 8각단면형상의 관통공(23)을 포함한다. 관통공(23)은 판재(11)의 길이방향에 대해 평행을 이루며 상호 이격하는 한 쌍의 평행변(25a,25b)과, 한 쌍의 평행변(25a,25b)을 사이에 두고 한 쌍의 평행변(25a,25b)에 대해 각각 수직을 이루는 한 쌍의 수직변(27a,27b)과, 인접하는 평행변(25a,25b)과 수직변(27a,27b)을 각각 경사를 이루며 연결하는 두 쌍의 경사변(29a,29b,29c,29d)을 포함한다.On the other hand, the perforation portion 21 includes a through hole 23 of the octagonal cross-sectional shape. The through-holes 23 have a pair of parallel edges 25a and 25b spaced apart from each other in parallel to the longitudinal direction of the plate 11 and a pair of parallel edges 25a and 25b interposed therebetween. A pair of vertical sides 27a and 27b perpendicular to the parallel sides 25a and 25b, respectively, and two connecting the adjacent parallel sides 25a and 25b and vertical sides 27a and 27b in an inclined manner, respectively; Pair of inclined sides 29a, 29b, 29c, and 29d.
한 쌍의 수직변(27a,27b)은 한 쌍의 평행변(25a,25b) 사이의 간격보다 작은 길이를 가진다.The pair of vertical edges 27a and 27b has a length smaller than the gap between the pair of parallel edges 25a and 25b.
각 경사변(29a,29b,29c,29d)은 프레임(1)의 사각 단면형상에 대응하여 평행변(25a,25b)에 대해 45도의 각도를 가진다.Each of the inclined sides 29a, 29b, 29c, and 29d has an angle of 45 degrees with respect to the parallel sides 25a and 25b corresponding to the rectangular cross-sectional shape of the frame 1.
또한, 천공부(21)는 연통공(33)을 더 포함하며, 연통공(33)은 관통공(23)과 연통하도록 일측 평행변(25a)에 판재(11)의 길이방향에 대해 수직하게 형성된다. 본 실시예에서의 연통공(33)은 그 단부가 반원형의 단면형상을 갖는 장공 형상을 가지며, 연통공(33)의 폭은 평행변(25a)과 동일한 길이를 가지고, 연통공(33)의 길이는 판재(11)의 테두리와 연통하지 않는 일정 길이를 가진다. 이러한 연통공(33)은 천공부(21)를 중심으로 하여 판재(11)를 판재(11)의 길이방향에 대해 수직하게 절곡시 원만하게 절곡하는 역할을 하여, 모서리(A)의 외측을 미려하게 라운드 형성한다. 여기서, 연통공(33)은 타측 평행변(25b)에도 형성할 수도 있다. 또한, 연통공(33)은 장공 형상 이외에 반원형, 사각형의 단면형상을 가질 수도 있다. 그리고, 본 실시예에서는 천공부(21)가 연통공(33)을 포함하지만, 연통공(33)은 선택적으로 개재될 수 있다.In addition, the drilling portion 21 further includes a communication hole 33, the communication hole 33 is perpendicular to the longitudinal direction of the plate member 11 on one side parallel side 25a to communicate with the through hole 23. Is formed. In the present embodiment, the communication hole 33 has a long hole shape whose end portion has a semicircular cross-sectional shape, and the width of the communication hole 33 has the same length as that of the parallel edge 25a. The length has a certain length that does not communicate with the edge of the plate (11). The communication hole 33 serves to bend smoothly when bending the plate 11 perpendicular to the longitudinal direction of the plate 11 with respect to the perforated portion 21, to mirror the outside of the corner (A) Form a round. Here, the communication hole 33 can also be formed in the other parallel side edge 25b. In addition to the long hole shape, the communication hole 33 may have a semicircular or rectangular cross-sectional shape. In addition, in the present embodiment, the perforation part 21 includes the communication hole 33, but the communication hole 33 may be selectively interposed.
한편, 한 쌍의 평행변(25a,25b) 중 연통공(33)이 형성되지 않는 평행변(25b)과 판재(11)의 테두리 사이의 간격은 수직변(27a,27b)과 동일한 길이를 갖는 것이 바람직하다. 이로써, 판재(11)를 판재(11)의 길이방향을 따라 천공부(21)를 중심으로 내향 절곡시 사각 통형상의 케이스를 형성할 수 있게 된다.On the other hand, the interval between the parallel edge 25b where the communication hole 33 is not formed and the edge of the plate 11 among the pair of parallel edges 25a and 25b has the same length as the vertical edges 27a and 27b. It is preferable. As a result, when the plate 11 is bent inward with respect to the perforated portion 21 along the longitudinal direction of the plate 11, a rectangular cylindrical case may be formed.
계속해서, 천공부(21)가 형성된 판재(11)를 판재(11)의 길이방향을 따라 내향 절곡한다. 즉, 각 평행변(25a,25b)의 연장선상에 형성된 제1절곡선(41a,41b)을 따라 판재(11)를 내향 절곡하고, 일측 평행변(25a)에 인접한 한 쌍의 수직변(27a,27b)의 각 꼭지점끼리의 가상 연장선상에 형성된 제2절곡선(43)을 따라 판재(11)를 내향 절곡하고, 한 쌍의 수직변(27a,27b)의 각 나머지 꼭지점끼리의 가상 연장선상에 형성된 제3절곡선(45)을 따라 판재(11)를 내향 절곡한다.Subsequently, the plate 11 having the perforations 21 formed therein is bent inward along the longitudinal direction of the plate 11. That is, the sheet member 11 is bent inward along the first bent lines 41a and 41b formed on the extension lines of the parallel edges 25a and 25b, and a pair of vertical edges 27a adjacent to one side parallel edge 25a are formed. The sheet 11 is bent inward along the second bent line 43 formed on the virtual extension lines of the vertices of each of the two vertices, and on the virtual extension lines of the remaining vertices of the pair of vertical edges 27a and 27b. The plate 11 is bent inward along the third bend line 45 formed in the inner portion.
이와 같이 판재(11)를 판재(11)의 길이방향을 따라 내향 절곡함에 따라, 도 5에 도시된 바와 같이 사각 통형상의 케이스가 형성된다.As the plate 11 is bent inward in the longitudinal direction of the plate 11, a rectangular cylindrical case is formed as shown in FIG.
이어서, 도 5에 도시된 바와 같이 내향 절곡된 판재(11)를 각 천공부(21)를 중심으로 하여 판재(11)의 길이방향에 수직하게 내향 절곡하여, 즉 각 천공부(21)의 각 경사변(29a,29b,29c,29d)이 마주보도록 절곡하여 사각형 프레임(1)의 3개의 모서리(A)를 형성한다. 이 때, 판재(11)는 연통공(33)에 의해 원활하게 절곡되고, 따라서 도 6에 도시된 바와 같이 각 모서리(A)의 외측은 평행변(25a,25b)의 길이에 대응하는 원호를 가지며 만곡 형성되어 라운드 형상 및 사면을 둘러싸고 있는 벽면을 형성하고 있는 띠 테두리를 갖게 된다. 또한, 절곡된 모서리(A)의 곡률 반경은 평행변(25a,25b)의 길이에 비례하여 증대한다.Subsequently, as shown in FIG. 5, the inwardly bent plate 11 is bent inwardly perpendicular to the longitudinal direction of the plate 11 with respect to each of the perforations 21, that is, the angle of each perforated portion 21. The inclined sides 29a, 29b, 29c, and 29d are bent to form three corners A of the rectangular frame 1. At this time, the plate 11 is smoothly bent by the communication hole 33, so as shown in Figure 6 the outer edge of each corner (A) is a circular arc corresponding to the length of the parallel edges (25a, 25b) It is curved and has a strip | belt edge which forms the round surface and the wall surface surrounding the slope. Further, the radius of curvature of the bent edge A increases in proportion to the length of the parallel edges 25a and 25b.
한편, 연통공(33)이 형성되지 않은 경우, 판재(11)의 길이방향을 따라 내향 절곡된 판재(11)를 천공부(21)를 중심으로 하여 판재(11)의 길이방향에 대해 수직하게 내향 절곡하면, 모서리(A)의 외측은 평행변(25a,25b)의 길이에 대응하여 라운드 형상을 형성하며 절곡된다.On the other hand, when the communication hole 33 is not formed, the plate 11 bent inward along the longitudinal direction of the plate 11 perpendicular to the longitudinal direction of the plate 11 centering on the perforations 21. When bent inwardly, the outside of the corner A is bent in a round shape corresponding to the lengths of the parallel edges 25a and 25b.
그리고, 3개의 모서리(A)를 형성하며 절곡된 판재(11)의 양측 자유단부를 용접하여 나머지 하나의 모서리(B)를 형성함으로써, 도 1에 도시된 바와 같이 띠 형상의 사각형 프레임(1)이 완성된다. 여기서, 용접되는 모서리(B)는 용접 후 그라인더로 연마하여 라운드 형상으로 형성할 수 있다.Then, by forming the three corners (A) and by welding both free ends of the bent plate 11 to form the other corner (B), as shown in Figure 1, the strip-shaped rectangular frame (1) This is done. Here, the edge B to be welded may be formed in a round shape by grinding with a grinder after welding.
이와 같이, 본 발명에 따르면, 판재에 복수의 천공부를 형성한 후, 각 천공부를 중심으로 판재의 길이방향에 대해 수직하게 판재를 절곡함으로써, 사면 중 세 개의 모서리가 연결된 라운드 형상 모서리 형성 작업으로 생산성을 증대시킬 뿐만 아니라 모서리에 의한 위험요소를 감소시키고, 향상된 외관을 가질 수 있게 된다.As described above, according to the present invention, after forming a plurality of perforations in the plate, by bending the plate perpendicular to the longitudinal direction of the plate around each of the perforations, round-shaped corner forming operation is connected three corners of the slope This not only increases productivity, but also reduces risks caused by edges and enables improved appearance.
한편, 전술한 실시예에서는 일정 길이의 판재에 3개의 천공부를 형성하여 사각프레임을 형성하는 것으로 설명하고 있지만, 천공부는 프레임의 단면형상에 대응하여 판재의 길이방향을 따라 간격을 두고 한 쌍 또는 4개 이상 형성될 수 있다. 그리고, 프레임의 단면형상에 대응하여 경사변의 각도도 변경될 수 있다.On the other hand, in the above-described embodiment is described as forming a rectangular frame by forming three perforations in a plate of a certain length, the perforations are a pair or at intervals along the longitudinal direction of the plate corresponding to the cross-sectional shape of the frame Four or more may be formed. The angle of the inclined side may also be changed to correspond to the cross-sectional shape of the frame.
도 7에는 본 발명에 따른 라운드 형상의 모서리를 형성하는 방법에 의해 제조된 사각형 프레임이 일 예로서 적용된 팔레트(pallet)의 사시도가 도시되어 있다.7 shows a perspective view of a pallet in which a rectangular frame made by a method of forming rounded corners according to the invention is applied as an example.
도 7에 도시된 바와 같이, 사각의 틀 형상을 이루는 팔레트는 본 발명에 따른 라운드 형상의 모서리를 형성하는 방법에 의해 제조된 사각단면형상의 상부 프레임(1)과, 기둥 프레임(3)의 하측에 이격 배치되는 하부 프레임(5)과, 상부 프레임(1)과 하부 프레임(5)을 상호 연결하며 지게차의 지게발이 삽입될 수 있도록 상부 프레임(1)과 하부 프레임(5) 사이에 공간을 형성하는 기둥 프레임(3)을 포함한다.As shown in FIG. 7, the pallet forming the rectangular frame has a rectangular cross-sectional upper frame 1 and a lower side of the pillar frame 3 manufactured by a method of forming rounded corners according to the present invention. A space between the upper frame 1 and the lower frame 5 so that the lower frame 5 and the upper frame 1 and the lower frame 5 are spaced apart from each other, and the forklift of the forklift can be inserted thereinto. It includes a pillar frame (3).
상부 프레임(1)에는 일정 폭과 길이를 갖는 복수의 저면판(7)이 얹어지는 구조를 가진다.The upper frame 1 has a structure in which a plurality of bottom plates 7 having a predetermined width and length are mounted.
이와 같이, 저면판(7)이 얹어지는 팔레트의 상부 프레임(1)의 제조시, 일정 길이의 판재에 복수의 천공부를 형성한 후, 각 천공부를 중심으로 판재의 길이방향에 대해 수직하게 판재를 절곡함으로써, 라운드 형상의 모서리 형성 작업이 간단하여 생산성을 증대시킬 뿐만 아니라 화물 적재시 미끄럼에 의한 이탈을 방지하고, 모서리에 의한 위험 요소를 감소시키며, 모서리의 외관을 향상시킬 수 있게 된다.As described above, in the manufacture of the upper frame 1 of the pallet on which the bottom plate 7 is placed, after forming a plurality of perforations in a plate member of a predetermined length, it is perpendicular to the longitudinal direction of the plate member with respect to each perforation portion. By bending the plate, the round-shaped corner forming operation is simple to increase productivity as well as to prevent slippage when loading cargo, to reduce the risk of corners, and to improve the appearance of the corners.
본 발명은 기재된 실시예에 한정되는 것이 아니고, 본 발명의 사상 및 범위를 벗어나지 않고 다양하게 수정 및 변형할 수 있음은 이 기술의 분야에서 통상의 지식을 가진 자에게 자명하다. 따라서 그러한 수정 예 또는 변형 예들은 본 발명의 특허청구범위에 속한다 하여야 할 것이다.It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

Claims (4)

  1. 일정 폭과 길이를 갖는 판재를 이용하여 라운드 형상의 모서리를 형성하는 방법에 있어서,In the method for forming the corners of the round shape using a plate having a predetermined width and length,
    상기 판재의 길이방향에 대해 평행을 이루며 상호 이격하는 한 쌍의 평행변과, 상기 한 쌍의 평행변 사이의 간격보다 작은 길이를 가지며 상기 한 쌍의 평행변을 사이에 두고 상기 한 쌍의 평행변에 대해 각각 수직을 이루는 한 쌍의 수직변과, 인접하는 상기 평행변과 상기 수직변을 각각 경사를 이루며 연결하는 두 쌍의 경사변을 갖는 8각단면형상의 관통공을 포함하는 천공부를 상기 판재에 천공하는 단계와;The pair of parallel edges parallel to the longitudinal direction of the plate and spaced apart from each other, and having a length less than an interval between the pair of parallel edges with the pair of parallel edges interposed therebetween A perforation portion comprising an octagonal cross-section through-hole having a pair of vertical edges perpendicular to each other and two pairs of inclined edges connecting the adjacent parallel edges and the vertical edges in an inclined manner; Perforating the plate;
    상기 각 평행변의 연장선상을 따라 상기 판재를 내향 절곡하고, 상기 한 쌍의 평행변 중 어느 하나의 평행변에 인접한 상기 한 쌍의 수직변의 각 꼭지점끼리의 가상 연장선상을 따라 상기 판재를 내향 절곡하고, 상기 한 쌍의 수직변의 각 나머지 꼭지점끼리의 가상 연장선상을 따라 상기 판재를 내향 절곡하는 단계와;Bending the plate inwardly along the extension line of each of the parallel edges, bending the plate inwardly along the imaginary extension line of each vertex of the pair of vertical edges adjacent to any one of the pair of parallel edges; Bending the plate inwards along an imaginary extension line between the remaining vertices of the pair of vertical edges;
    상기 내향 절곡된 판재를 상기 각 경사변이 마주보도록 절곡하여 모서리를 형성하는 단계를 포함하는 것을 특징으로 하는 라운드 형상의 모서리를 형성하는 방법.And bending the inwardly bent plate to face each of the inclined sides to form corners.
  2. 제1항에 있어서,The method of claim 1,
    상기 천공부는 상기 관통공과 연통하도록 상기 한 쌍의 평행변 중 적어도 어느 하나의 평행변에 상기 판재의 길이방향에 대해 수직하게 형성된 연통공을 더 포함하며, 상기 연통공은 상기 관통공과 함께 상기 판재에 천공되는 것을 특징으로 하는 라운드 형상의 모서리를 형성하는 방법.The drilling portion further comprises a communication hole formed perpendicular to the longitudinal direction of the plate on at least one of the parallel sides of the pair of parallel edges so as to communicate with the through hole, the communication hole is connected to the plate together with the through hole. A method for forming round shaped corners, characterized in that it is perforated.
  3. 제1항에 있어서,The method of claim 1,
    상기 모서리는 상기 평행변의 길이에 대응하는 원호를 가지며 만곡 형성되는 것을 특징으로 하는 라운드 형상의 모서리를 형성하는 방법.And the corners are curved with arcs corresponding to the lengths of the parallel edges.
  4. 제1항에 있어서,The method of claim 1,
    상기 천공부는 한 쌍 이상 포함하며, 상기 각 천공부는 상기 판재의 길이방향을 따라 간격을 두고 형성되는 것을 특징으로 하는 라운드 형상의 모서리를 형성하는 방법.And a plurality of perforations, wherein each of the perforations is formed at intervals along the longitudinal direction of the plate.
PCT/KR2013/008205 2012-09-12 2013-09-11 Method for forming rounded corner WO2014042419A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0101052 2012-09-12
KR1020120101052A KR101373226B1 (en) 2012-09-12 2012-09-12 Method forming a rounded corner

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CN117225988B (en) * 2023-11-09 2024-01-12 合肥工业大学 Large-size thin-wall box-type part composite forming device and method

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JPH06563A (en) * 1992-06-15 1994-01-11 Matsushita Electric Works Ltd Method for working case body
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JP2004034063A (en) * 2002-07-01 2004-02-05 Ricoh Co Ltd Pipe manufacturing method, pipe made thereby, and image forming device using the pipe
KR20110087654A (en) * 2010-01-26 2011-08-03 김동선 A polygon pipe and hetero pipe forming method and pipe manufactured thereof

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