KR101542948B1

KR101542948B1 - Punching device for manufacturing which improve productivity

Info

Publication number: KR101542948B1
Application number: KR1020150078255A
Authority: KR
Inventors: 김길동
Original assignee: 주식회사 세명오토테크
Priority date: 2015-06-02
Filing date: 2015-06-02
Publication date: 2015-08-11
Also published as: KR20150068939A

Abstract

A punching device for producing an angle pallet which is welded by closely contacting a piercing angle to one side of a circular pillar is disclosed. The punching apparatus according to the present invention is characterized in that a punch 3 is provided with a punch 3 having a circular pole to be welded to the first surface of the angle M when the punch 3 is bent to a point approximately equal to the thickness of the angle, A first shaping blade 30 which forms a pair of cutting lines symmetrical to each other with a convex curvature so as to correspond to the outer circumferential surface up to a point just before the starting point of the bending portion; A second forming blade (32) which maintains the curvature of the first shaping blade (30) to the fold and forms a pair of cutting lines from the folding end to the end point of the folding part, and a second shaping blade And a third forming blade (34) forming a pair of parallel cutting lines on two sides, wherein an angle of an interior angle between the first forming blade (30) and the third forming blade (34) is greater than a right angle and less than 120 degrees Is formed.
As described above, according to the present invention, it is possible to reduce the manufacturing cost, which is a problem of the pallet manufacturing method using the conventional angled bracket, to complete the cutting process for welding the angled bracket to the circular column by one punching, Not only can it improve quality.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a punching device for manufacturing an angle pallet by welding a punch angle to one side of a circular pillar,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching apparatus for machining a pallet having a circular column and a line angle, and more particularly, to a punching apparatus for manufacturing an angle pallet which is welded to one side of a circular column by welding.

A material formed by bending a metal plate material into a letter shape is called an angle. The reason for making such an angle shape is to make it possible to hold a heavy object even if it is raised. These angles are mainly used when manufacturing pallets.

Korean Patent Publication No. 20-2010-0011658, published on Dec. 1, 2010, discloses a pallet for loading a vehicle engine. Various pallet angles are used in a pallet for loading heavy loads, such as in the above patent for loading engines. The above-mentioned patent application corresponds to the use of a bracket fixed angle or a seat fixing angle.

1 and 2, when the angled 100 is to be welded to the circular column 102, the length of one end and the other end of the angled 100 are adjusted to the angles between the circular columns 102, A process 200 for cutting the material to have a curvature so as to coincide with the outer diameter of the circular column 102, a cutting process 202 for adjusting the thickness, and a vertical cutting process 204 are required.

In particular, angled angles having a folded portion are designed to have a curvature at an inner side portion that is bent due to a force-proof relationship and do not have a right angle at right angles. In the process for cutting, the process of fixing and releasing for cutting and the process of changing the machined part are required, and a lot of air is generated. Especially, in the case of a pallet using a plurality of brackets, .

The present invention has been developed in order to solve the above problems, and it is an object of the present invention to provide a pallet manufacturing method and a pallet manufacturing method using the same, The present invention provides a punching apparatus which can reduce the production cost and improve the quality by completing a cutting process for welding the angled bracket to the circular column in manufacturing an angle pallet to be processed.

According to an aspect of the present invention, there is provided a punching apparatus comprising: a die (4) for horizontally supporting an angle (M) extending in a lengthwise direction, And a punch (3) for forming a cut portion having a predetermined shape by cutting the punch (3); When it is assumed that a portion of the angle M is bent to the same point as the angle of the angle with respect to the angle-deflected portion of the angle M, it has a curved outward convex shape corresponding to the outer circumferential surface of the circular column to be welded to the first surface of the angle M, A first forming blade 30 which forms a pair of cutting lines just before the bending start point and a bending portion of the first forming blade 30 from the end of the first forming blade 30 to the bending portion of the angle M, And forming a pair of parallel cutting lines on the second surface perpendicular to the first surface from the bending end point of the second forming blade. And the third forming blade 34 is formed with a forming blade portion that is larger than the right angle and less than 120 degrees in the angle of the interior angle between the first forming blade 30 and the third forming blade 34, 4) has; And a scraping hole for receiving a forming blade portion of a punch vertically falling down at the time of punching and discharging the scrap cut from the angle to the lower portion corresponding to the forming blade portion, The second support blade 42 corresponding to the second shaping blade 32 and the third support blade 44 corresponding to the third shaping blade 34 correspond to the first support blade 40 corresponding to the shaping blade 30, ) Is formed on the surface of the substrate.

The punch 3 further includes a first guide protrusion 350 and a second guide protrusion 352 which are formed on the outer surface of the punch 3 and slide up and down. A first guide groove 450 in which the first guide protrusion 350 is inserted and a second guide groove 460 in which the second guide protrusion 352 is fitted desirable.

As described above, according to the present invention, it is possible to reduce the manufacturing cost, which is a problem of the pallet manufacturing method using the conventional angled bracket, to complete the cutting process for welding the angled bracket to the circular column by one punching, Not only can it improve quality.

FIGS. 1 and 2 show a process 200 for cutting a braille angle 100 so as to be in close contact with a circular column 102 in order to weld a bracket angle 100 to a circular column 102, A process 202, and a vertical cutting process 204,
FIG. 3 is a cross-sectional view showing the structure of a punch and a die of a punching apparatus used in a method of processing an angle pallet for welding by closely contacting a sagittal angle to one side of a circular column according to the present invention,
4 is a plan view showing the structure of a die in the punching apparatus of FIG. 3,
Fig. 5 is a bottom perspective view showing the structure of the punch in the punching apparatus of Fig. 3,
6 is a plan perspective view showing the structure of a punch in the punching apparatus of Fig. 3,
7 is a view showing a punching process by a punching device used in an angle pallet processing method in which a piercing angle is closely contacted to one side of a circular column according to the present invention and productivity is improved by using a punching device for welding;
FIG. 8 is a plan perspective view showing a punching process by a punching device used in a method of machining an angle pallet in which productivity is improved by using a punching device for welding by affixing angles to one side of a circular column according to the present invention; and
9 is a plan view showing angles and angle scrap processed by the method of processing an angle pallet according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

First, the lattice angle M has a bending portion. In this specification, the portion from a portion bent at a right angle to a portion equal to the thickness of the angle is referred to as a bending portion. FIG. 3 is a cross-sectional view showing the structure of a punch and a die of a punching apparatus used in a method of processing an angle pallet for welding by attaching a piercing angle to one side of a circular column according to the present invention. Referring to FIG. 3, the present invention is characterized in that a punching device is used to cut the angle M to form a cut portion having a predetermined shape. The punching device includes a die 4 for horizontally supporting an angle M extending in the longitudinal direction and a cross-sectional shape of the lattice, and an angle M supported by the die 4, And a punch (3) for forming a cut portion having the cut portion.

The punch (3)

When it is assumed that a portion of the angle M is bent to the same point as the angle of the angle with respect to the angle-deflected portion of the angle M, it has a convex curvature outwardly corresponding to the outer circumferential surface of the circular column to be welded to the first surface of the angle M, A first forming blade 30 which forms a pair of cutting lines just before the bending start point and a bending portion of the first forming blade 30 from the end of the first forming blade 30 to the bending portion of the angle M, And forming a pair of parallel cutting lines on the second surface perpendicular to the first surface from the bending end point of the second forming blade. And a forming blade portion having a larger angle than the perpendicular angle and less than 120 degrees is formed between the first shaping blade 30 and the third shaping blade 34.

Fig. 4 is a plan view showing the structure of the die in the punching apparatus of Fig. Referring to FIG. 4, the die 4 receives a forming blade portion of the punch 3, which corresponds to the forming blade portion formed in the punch 3 and descends vertically at the time of punching, A first support blade 40 corresponding to the first shaping blades 30 and a second shaping blade 40 corresponding to the second shaping blades 32 are formed in the rim of the scrap hole, The second supporting blade 42 and the third supporting blade 44 corresponding to the third forming blade 34 are formed so that the angle M is cut by the forming blade and the supporting blade when the punch 3 descends .

The die 4 is formed to extend from the scrap hole to both ends of the scraper hole. The die 4 has a first guide groove 450 in which the first guide protrusion 350 is inserted and a second guide groove 450 in which the second guide protrusion 352 is inserted The second guide groove 460 is provided so that the first guide groove 450 is vertically slid along the first guide groove 450 and the second guide protrusion 352 is guided along the second guide groove 460, The punch 3 can be vertically slid up and down.

Fig. 5 shows the structure of the punch in the punching apparatus of Fig. 3 as a bottom perspective view. 5, a punch 3 is provided with a first forming blade 30 having a convex curvature and a second forming blade 30 forming a cutting line up to the end point of the crease while maintaining the curvature of the first forming blade 30, (32), and a third forming blade (34) forming a pair of parallel cutting lines from the fold end point.

The first shaping blades 30 form a pair of mutually symmetrical cutting lines up to a point just before the starting point of bending when the bending of the first shaping blades 30 to a point equal to the thickness of the angle around the bent portion at the right angle of the angle M is formed, The second forming blade 32 maintains the curvature of the first forming blade 30 from the end of the first forming blade 30 to the fold of the angle M and forms a pair of cutting lines . The third shaping blades 34 form a pair of parallel cutting lines on a second side perpendicular to the first side from the fold end.

Fig. 6 is a plan view of the structure of the punch in the punching apparatus of Fig. Referring to FIG. 6, the third shaping blade 34 is formed to have a shape that is raised obliquely from the folded portion in order to form a pair of parallel cutting lines on the second surface perpendicular to the first surface from the bent end point. And the first shaping blades 30 also have an oblique upward shape from the folded portion.

FIG. 7 shows a punching process using a punching device used in an angle pallet processing method in which a pillar angle is closely contacted to one side of a circular column according to the present invention, and productivity is improved by using a punching device for welding. Since Referring to Figure 7 to achieve the first forming blade 30 and the third molding day 34. Cabinet angle (Φ _P) between the bent angle (Φ _M) under even large and greater than the right angle 120 than the angle ( When the punch 3 is vertically lowered as in a), as shown in (b), the outer edge of the angle M is in contact with the first forming blade 30 and the third forming blade 34, ) And cut. The angle scrap M 'is separated from the angle M and the separated angle scrap M' is separated from the angle M as shown in (c) d) as shown in Fig.

FIG. 8 is a plan view showing a punching process by a punching apparatus used in a method of processing an angle pallet in which productivity is improved by using a punching apparatus for welding by attaching a piercing angle to one side of a circular column according to the present invention. 8, the punch 3 located at the upper portion of the angle descends vertically as shown in (a), and the forming blade starts to contact the corner portion of the angle as shown in (b) The machined angle M and the angle scrap M 'are separated from each other and the angle scrap M' separated as shown in (d) has a shape corresponding to the shape of the forming blade.

FIG. 9 is a plan view of angles and angle scrap processed by the method of processing an angle pallet according to the present invention. 9, the angle scrap M 'is provided with a curvature cutting scrap 800 corresponding to its shape by a first shaping blade 30 of the punch 3 and a tear cutting scrap 820 And a vertical cut scrap 840 cut into a straight line. The machined angle M includes a curved cut portion 920 having a curvature and including a curved cut portion 900 and a bent portion corresponding to the shape by the first forming blade portion 30 of the punch 3, And a vertical cut feature 940 cut into a straight line.

According to the machining method of the present invention as described above, it is possible to reduce the number of workpieces, which is a problem of the pallet manufacturing method using the conventional angled brackets, to complete the cutting process for welding the angled brackets to the circular columns by one punching, And quality can be improved.

M: Angle
3: punch
30: first forming blade 32: second forming blade 32,
34: Third forming blade
350: first guide projection 352: second guide projection
4: Die
40: first support blade 42: second support blade
44: Third base blade
450: first guide groove 460: second guide groove

Claims

A die 4 for horizontally supporting an angle M extending in the longitudinal direction taking a cross-sectional shape of a bracket; and an angle M supported by the die 4 is cut to form a cut portion having a predetermined shape And a punch (3) for punching,
The punch (3)
When it is assumed that a portion of the angle M is bent to the same point as the angle of the angle with respect to the angle-deflected portion of the angle M, it has a convex curvature outwardly corresponding to the outer circumferential surface of the circular column to be welded to the first surface of the angle M, A first forming blade 30 which forms a pair of cutting lines just before the bending start point and a bending portion of the first forming blade 30 from the end of the first forming blade 30 to the bending portion of the angle M, And forming a pair of parallel cutting lines on the second surface perpendicular to the first surface from the bending end point of the second forming blade. The forming angle of the first forming blade 30 and the third forming blade 34 is greater than the perpendicular angle and less than 120 degrees.
The die (4)
And a scraping hole for receiving a forming blade portion of a punch vertically falling down at the time of punching and discharging the scrap cut from the angle to the lower portion corresponding to the forming blade portion, The second support blade 42 corresponding to the second shaping blade 32 and the third support blade 44 corresponding to the third shaping blade 34 correspond to the first support blade 40 corresponding to the shaping blade 30, Is formed on one side of the circular column, and the angle bracket is closely contacted to one side of the circular column to manufacture an angle pallet to be welded.

The method according to claim 1,
The punch (3)
And a first guide protrusion (350) and a second guide protrusion (352) formed on the outer side surface and sliding up and down,
The die (4)
A first guide groove 450 in which the first guide protrusion 350 is inserted and a second guide groove 460 in which the second guide protrusion 352 is inserted are formed so as to extend from both sides of the scrap hole, The punching apparatus according to any one of claims 1 to 3, further comprising: