KR20120126454A

KR20120126454A - Ejecting device for stretch bender

Info

Publication number: KR20120126454A
Application number: KR1020110044245A
Authority: KR
Inventors: 이문용; 정명섭
Original assignee: 주식회사 성우하이텍
Priority date: 2011-05-11
Filing date: 2011-05-11
Publication date: 2012-11-21

Abstract

PURPOSE: An ejecting device for a stretching and bending machine is provided to automatically eject a shaped beam with ejecting rods that are rotated relative to a bending die and push out both ends of the shaped beam. CONSTITUTION: An ejecting device for a stretching and bending machine comprises an ejecting unit(110) and an ejecting cylinder(120). The ejecting unit is installed on both ends of the upper part of a bending die(30) via a hinge part(H) and ejects a shaped beam from the bending die with ejecting rods which rotate along the side of the bending die. The ejecting cylinder is connected to both sides of the upper part of the bending die via a hinge fork(121) and rotates the ejecting unit.

Description

Ejecting Device for Stretch Bending Machine {EJECTING DEVICE FOR STRETCH BENDER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to stretch bending machines, and more particularly, to an ejecting device for a stretch bending machine for taking out a stretch bending molded beam from a bending die.

In general, bending equipment is used for bending molding beams at a certain curvature, and in particular, it is also applied to bending molding a straight shaping beam formed through a roll forming process such as a vehicle bumper beam at a certain curvature.

That is, the bending equipment bends and forms the straight beam 1 as shown in FIG. 1, and produces the curved beam 3 having a constant curvature as shown in FIG.

Here, the straight beam 1 has an upper surface (F2) and a lower surface (F3) with respect to the front surface (F1), in the center of the front surface (F1) to form a recess (G) to reinforce rigidity, The width W may be applied to a bumper beam of a large truck, which is relatively wider than the bumper beam to be applied.

However, when bending the high-strength linear beam 1 having a relatively large width W between the upper surface F2 and the lower surface F3 with a general roll bending machine, a round bender, or the like, the high rigidity of the linear beam 1 is formed. There is a disadvantage of bad sex.

In addition, when the straight beam 1 is a highly rigid material, it is difficult to obtain an accurate curvature by a spring back or the like, and thus there are disadvantages such as poor assembly due to poor dimension.

In order to solve this disadvantage, a stretch bending machine is applied. The stretch bending machine stretches both ends of a high-strength forming beam having a relatively large width, and stretches the bending bend to a bending die of a predetermined shape to control rigidity or spring back to control the size of the molding curvature. This will increase the precision.

Referring to FIG. 3, the stretch bending machine 10 basically includes a bending die 20, a bending die 30, a rotation unit 40, and a stretching unit 50.

First, a hinge frame 21 is separately installed at the rear side of the bending die 20.

The bending mold 30 is installed at one side of the center of the upper surface of the bending die 20 in order to mold the straight beam 1 to a predetermined curvature.

The bending mold 30 has a curvature shaping groove 33 having a predetermined curvature for curvature shaping on its front surface.

In addition, the rotary unit 40 is provided in pairs, and has a rotary shaft 41 on the bending die 20 corresponding to both lower sides of the bending die 30, and has a rotary table around the rotary shaft 41 ( 43 is configured to rotate by cylinder drive.

The rotary table 43 is provided with a rotary driving force by the rotary cylinder 45, the rotary cylinder 45 is installed between the hinge frame 21 and the rotary table 43.

In addition, the stretching unit 50 achieves a stretching operation by pulling at a predetermined pressure by clamping both ends of the forming beam 1 configured and supplied on the rotating table 43 of each rotating unit 40.

That is, the stretching unit 50 is provided with a stretching cylinder 51 on the rotating end side on the rotating frame 43, the toggle clamper 54 is configured at the tip of the operating rod of the stretching cylinder 51. The toggle clamper 54 is installed to slide guide along the guide rail 55 on the rotary frame 43.

Here, the toggle clamper 54 is clamped by the operation of the clamping cylinder unit 56 to maintain the stretching operation by the stretching cylinder 51 by clamping the end portion of the forming beam 1 to a predetermined pressure or more. The member 57 is configured to drive.

Therefore, the stretch bending machine, when the straight beam 1, which is a bending material, is introduced to the front of the bending die 30, both stretching cylinders 51 are advanced, and each toggle clamper 54 is formed at both ends of the straight beam 1. Clamp

In such a state, the two rotation cylinders 45 are driven backward in the same manner, and the ends of the respective rotation frames 43 are rotated to the rear with the rotation axis 41 at the center of rotation, and at the same time, the two toggle clampers 54 are also rotated. The reverse driving of each stretching cylinder 51 pulls both ends of the straight beam 1 at a constant pressure to perform stretching operation.

Accordingly, the straight beam 1 is formed into a forming beam 3 having a curvature by bending forming the bending die 30 at the same time as the stretching operation.

However, the above-mentioned conventional stretch bending machine has a curvature forming groove of the bending die 30 after the straight beam 1 is formed into a forming beam 3 of constant curvature along the curvature forming groove 33 of the bending die 30. 33) there is a problem in that it is difficult to take out only by the force of the operator, it is possible to take out the molded beam (3) by the rubber hammer or hammer, etc., but leave a trace of price on the molded beam (3) There is a problem of dropping.

An embodiment of the present invention is to provide an ejecting device for a stretch bending machine for preserving the merchandise of the forming beam by automatically extracting the formed forming beam stretch stretch bending by the cylinder driving force from the bending die.

In one or more embodiments of the present invention, the ejecting means is rotatably installed at each of the upper and both ends of the bending mold through the hinge portion to eject the forming beam on the bending mold while the ejecting rod rotates along the side of the bending mold. ; And one side is hinged to the upper both sides of the bending die through a hinge fork, it may provide an ejecting device for a stretch bending machine including an ejecting cylinder for rotationally driving the ejecting means.

In addition, the ejecting means may include a hinge plate rotatably installed at each of the upper ends of the bending die through the hinge portion; And an ejecting rod installed at the lower end of the hinge plate and rotating along the side of the bending mold together with the hinge plate to extract a forming beam on the bending mold.

In addition, the hinge portion may be composed of a hinge shaft that is fixedly installed through the hinge block on the bending mold.

In addition, the ejecting rod is a fastening end that is fastened to the front end of the hinge plate; A takeout end which is integrally formed in the fastening end in a vertical direction and pushes out the forming beam on the bending die; And a support end which is integrally formed in the horizontal end in the horizontal direction and supports the extracted forming beam.

In addition, the ejecting cylinder may be constituted by a hydraulic cylinder with a working pressure.

According to an embodiment of the present invention, both side ejection rods may be automatically taken out while the ejecting rods are rotated with respect to a bending mold having a curvature forming groove having a predetermined curvature.

For this reason, a shaping | molding beam can be taken out automatically from a bending die, and the merchandise of a shaping | molding beam can be preserved.

1 is a perspective view illustrating a straight beam formed by a general roll forming process.
2 is a perspective view illustrating a curved shaping beam formed by bending using a general bending apparatus.
3 is a plan view of a typical stretch bending machine.
4 is a perspective view of an ejecting device for a stretch bending machine according to an embodiment of the present invention.
5 and 6 are operation state diagrams of the stretch bending device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a perspective view of an ejecting device for a stretch bending machine according to an embodiment of the present invention.

In order to clearly illustrate the embodiments of the present invention, parts that are not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the entire specification.

Referring to FIG. 4, an ejecting apparatus 100 for a stretch bending machine according to an embodiment of the present invention is installed on a bending die 30 of a stretch bending machine 10 to bend a forming beam 3 in which a curvature forming is completed. It is configured to take out from 30.

The ejecting device 100 for the stretch bending machine is composed of the ejecting means 110 and the ejecting cylinder 120.

First, the ejecting means 110 is rotatably installed at each of both upper end portions of the bending mold 30 through the hinge portion H, and rotates along the side of the bending mold 30 while the bending mold 30 is rotated. The shaping beam 3 of the image is taken out.

In the ejecting means 110, hinge plates 111 are rotatably installed at both ends of the upper portion of the bending mold 30 through hinge portions H, respectively.

Here, the hinge portion (H) is composed of a hinge shaft (HS) that is fixedly installed on the bending mold 30 through the hinge block (HB).

In addition, an ejecting rod 113 is installed at the lower end of the hinge plate 111 to rotate along the side of the bending mold 30 together with the hinge plate 111 to form a beam formed on the bending mold 30. (3) is configured to push out.

At this time, the ejecting rod 113 is a fastening end 115 is fastened to the lower end of the hinge plate 111, and the extraction end 117 is formed integrally bent in the vertical direction to the fastening end 115. , And a support end 119 which is integrally bent in the horizontal direction with the takeout end 117.

Here, the extraction end 117 pushes out the shaping beam 3 on the bending die 30, and the support end 119 supports and hangs the taken out shaping beam 3.

On the other hand, the ejecting cylinder 120 is hinged to one side through the hinge fork 121 on both sides of the upper portion of the bending mold 30, the tip of the operating rod of the ejecting cylinder 120 is the ejecting plate ( It is hinged to one side of 111 to rotate the ejecting plate 111.

At this time, the ejecting cylinder 120 may be composed of a hydraulic cylinder to the operating pressure.

Therefore, the operation of the ejecting device 100 for the stretch bending machine according to the embodiment of the present invention configured as described above will be described with reference to FIGS. 5 and 6.

Referring to FIG. 3, after the bending beam is completed at the same time as the forming beam 3 is stretched with respect to the bending die 30 of the stretch bending machine 10, as shown in FIG. 5, the forming beam 3 is formed. It is in the state inserted in the curvature shaping | molding groove 33 of the bending die 30. As shown in FIG.

In this state, as shown in FIG. 6, the ejecting cylinder 120 is driven forward to rotate the hinge plate 111 around the hinge axis HS.

Then, the ejecting rod 113 of the ejecting end 117 pushes out the forming beam 3 from the curvature forming groove 30 of the bending die 30 to the outside, and thus, the extracted forming beam 3 is supported and supported by the support end 119 of the ejecting rod 113.

As a result, the ejecting apparatus 100 automatically extracts the forming beam 3 from which the curvature molding is completed, from the bending die 30, thereby maintaining the commerciality of the forming beam 3.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. In addition, it is natural that it belongs to the scope of the present invention.

3: forming beam 10: stretch bending machine
30: bending mold 33: curvature forming groove
100: ejecting device 111: hinge plate
113: ejecting rod 115: tightening end
117: take out 119: support
120: ejecting cylinder 121: hinge fork

Claims

Ejecting means rotatably installed at hinges on both upper ends of the bending die to eject the forming beam on the bending die while the ejecting rod rotates along the side of the bending die; And
Ejecting device for a stretch bending machine comprising an ejecting cylinder is hinged to one side through the hinge fork to the upper sides of the bending mold, the ejecting cylinder to rotate the ejecting means.

The method of claim 1,
The ejecting means is
Hinge plates rotatably installed at hinges on both upper ends of the bending molds; And
And a ejecting rod installed at a lower end of the hinge plate and configured to eject a forming beam on the bending mold while rotating along the side of the bending mold together with the hinge plate.

The method according to claim 1 or 2,
The hinge part is an ejecting device for a stretch bending machine, characterized in that consisting of a hinge axis fixedly installed through the hinge block on the bending mold.

The method of claim 1,
The ejecting rod is
A fastening end fastened to a lower end of the hinge plate;
A takeout end which is integrally formed in the fastening end in a vertical direction and pushes out the forming beam on the bending die; And
Ejecting device for a stretch bending machine, characterized in that the bending end is formed integrally with the take-out end, the support end for supporting the blown forming beam.

The method of claim 1,
The ejecting cylinder is an ejecting device for a stretch bending machine, characterized in that consisting of a hydraulic cylinder to the operating pressure.

Hinge plates rotatably installed at hinges on both upper ends of the bending dies;
An ejecting rod installed at a lower end of the hinge plate and extracting a forming beam on the bending mold while rotating along the side of the bending mold together with the hinge plate; And
One side is hinged to the upper both sides of the bending die through a hinge fork, the ejecting device for a stretch bending machine comprising an ejecting cylinder hinged to the front end of the operating rod on one side of the hinge plate.

The method according to claim 6,
The hinge part is an ejecting device for a stretch bending machine, characterized in that consisting of a hinge axis fixedly installed through the hinge block on the bending mold.

The method according to claim 6,
The ejecting rod is
A fastening end fastened to a lower end of the hinge plate;
A takeout end which is integrally formed in the fastening end in a vertical direction and pushes out the forming beam on the bending die; And
Ejecting device for a stretch bending machine, characterized in that the bending end is formed integrally with the take-out end, the support end for supporting the blown forming beam.

The method according to claim 6,
The ejecting cylinder is an ejecting device for a stretch bending machine, characterized in that consisting of a hydraulic cylinder to the operating pressure.