KR20120009003A

KR20120009003A - bending die for pipe bending apparatus

Info

Publication number: KR20120009003A
Application number: KR1020100070601A
Authority: KR
Inventors: 김영남
Original assignee: (주)더블유티엠
Priority date: 2010-07-21
Filing date: 2010-07-21
Publication date: 2012-02-01

Abstract

The present invention relates to a bending mold installed and used in a pipe bending machine, and more particularly, when bending a pipe by a bending mold, the clamp holding the pipe is rotated and rotated by a rotating member without rotating the bending roll. In order to prevent the bending mold from breaking,
A bending mold provided in a bending machine for bending a pipe to a desired radius of curvature, wherein the bending mold includes a bending roll which is not rotated by forming a bending groove into which the pipe is inserted; A pressure die for supporting the pipe inserted into the bending groove; A pair of clamps are provided on the opposite side to which the pipe is inserted, and the clamps are provided on upper and lower portions of the bending rolls to be rotated together with a rotating member that is rotated by a power source. It is about.

Description

Bending die for pipe bending machine

The present invention relates to a bending mold installed and used in a pipe bending machine, and more particularly, when bending a pipe by a bending mold, the clamp holding the pipe is rotated and rotated by a rotating member without rotating the bending roll. It relates to a bending die for a pipe bending machine to prevent the bending die is broken.

In general, in order to bend a material of steel pipe or pipe of a non-ferrous metal to a certain curvature, a bending machine is used to bend to a required curvature, and such a bending machine is formed by a bending mold composed of several sets for bending processing. Bending processing is made.

As shown in FIGS. 5 and 6, a conventional conventional bending mold 100 provided with a bending machine has a bending die (bending die) having a bending groove 112 rotated by a power source such as a conventional motor or a cylinder ( The wiper die 120 and the pressure die 125 are provided at the front end of the 110 to be in contact with the bending groove of the bending die to support the pipe to be inserted without rotation, and rotate together with the bending die. And a pair of clamps 130 for closely contacting the inserted pipe to the bending groove 112 of the bending die 110 and a mandrel for maintaining the roundness of the bent portion of the pipe when the pipe is bent (not shown). Not shown) and a clamping chuck (not shown) that pushes the pipe upon bending.

The bending mold 100 provided in the bending machine configured as described above has a plurality of molds composed of one set, that is, divided into a portion supporting the pipe to be bent and a portion to be rotated and bent to a required curvature.

However, in the case of the wiper die 120 provided in contact with the bending groove 112 of the bending die 110 of the conventional bending mold 100 provided in the bending machine, the pipe inserted with the pressure die 125 is supported. While contacting the bending groove 112 of the bending die 110 is rotated, that is, the end portion of the wiper die 120 that is in contact with the bending groove 112 of the bending die 110 is the bending die is rotated In the process, the contact parts are frequently worn or torn and broken.

In other words, while the wiper die is not being rotated and supports the pipe, the bending portion of the pipe rubs with the end of the wiper die while the bending die is rotated for bending, and thus the end of the wiper die is worn or It is torn apart and broken.

Therefore, a problem arises that the bending groove of the bending die and the end of the wiper die are not formed with the roundness of the pipe portion bent at the joining portion to a desired state, and the defect rate is also significantly high. The problem is that the die needs to be replaced.

As a result, the frequent replacement of the wiper die among the bending molds provided in the bending machine not only lowered productivity but also caused a large number of defective products, resulting in significant economic losses.

The present invention has been made to solve the above-mentioned conventional problems, its main object is to bend by rotating the clamp by the rotating member to hold the pipe without rotating the bending roll when bending the pipe by the bending die Accordingly, the present invention provides a bending die for a pipe bending machine to prevent breakage of the bending die.

Another object of the present invention is to be able to support the pipe more stably.

Still another object of the present invention is to allow bending of the pipe to be stable at an accurate curvature.

Still another object of the present invention is to allow the clamp to be smoothly rotated by the rotating member.

The present invention for solving the above technical problem, the bending mold is provided in the bending machine to bend the pipe to a desired radius of curvature, the bending mold is a bending roll that is formed by bending grooves into which the pipe is inserted; A pressure die for supporting the pipe inserted into the bending groove; A pair of clamps are provided on the opposite side to which the pipe is inserted, and the clamps are provided on upper and lower portions of the bending roll, and are configured to rotate together with a rotating member rotated by a power source.

The support side is formed integrally formed on the front end side of the bending roll is inserted into the support groove corresponding to the bending groove.

The clamp is composed of a first clamp provided in contact with the bending groove of the bending roll, and a second clamp for holding a pipe inserted with the first clamp is rotated together with the rotating member.

The first clamp may include a seating portion in which a seating groove is formed to be in contact with the bending groove, and a fixing portion integrally extending from the seating portion and fixed to the rotating member.

The rotating member is composed of a fixed block is mounted with a clamp in contact with the bending roll, the upper block and the lower block is mounted on the upper and lower ends of the fixing block with a bending roll interposed by a power source do.

According to the present invention, the bending die is prevented from being broken by rotating the clamp holding the pipe by the rotating member without bending the bending roll when the pipe is bent by the bending die of the bending machine. Along with the effect of ensuring a long service life, the productivity of the bent pipe without defects can also be maximized.

In addition, by integrally forming a support portion for supporting the pipe at the front end of the bending roll into which the pipe is inserted, the support area of the pipe is secured as wide as possible so that the pipe can be more stably supported.

In addition, by bending the clamp by the rotating member on the bending groove of the bending roll when bending the pipe to be able to be stably bent to the exact curvature matched with the bending groove, to minimize the defects and to precise and accurate curvature It is to have an effect that can smoothly provide a product that can be bent.

In addition, by allowing the clamp to rotate smoothly by the fixed block and the upper and lower blocks, which are rotating members, the clamp has a stable and easy effect.

1 is an exploded perspective view showing main parts of the present invention.
Figure 2 is a perspective view of the main portion in the coupled state according to FIG.
3 is a sectional view of main parts of the coupled state according to FIG. 2;
4a and 4b are schematic views schematically showing the operating process of the present invention.
Figure 5 is an exploded view schematically showing a conventional bending mold provided in the bending machine.
6 is a main view schematically showing the bending process of the coupled state according to FIG.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described with the same technical configuration described with the same reference numerals.

1 is a perspective exploded perspective view of the main portion of the present invention, Figure 2 is a perspective view of the main portion of the coupled state according to Figure 1, Figure 3 is a sectional view of the main portion of the coupled state according to FIG.

In the bending mold 100, which is provided with a bending machine used to bend a pipe material of a steel pipe or non-ferrous metal to a predetermined curvature as shown in the figure, bending the pipe to a desired curvature.

The present invention,

In order to prevent the bending die from being broken by bending only the clamp and the rotating member without rotating the bending roll when bending the pipe by the bending die,

The bending mold 100,

A bending roll 10 into which a pipe is inserted into which a bending groove 112 is formed and connected to the fixed block 15 so as to be mounted on a base or a conventional frame and not rotating;

A pressure die 125 supporting the pipe inserted into the bending groove while being reciprocated by a reciprocating member such as a conventional cylinder;

It is provided with a pair of clamps 130 for holding the pipe inserted from the opposite side to the pipe is inserted, the clamp 130 is provided on the upper and lower portions of the bending roll 10, such as a conventional motor or cylinder It is shown to be configured to rotate with the rotating member 20 is rotated by a power source (not shown).

The bending part of the bending die of the conventional bending die is formed by integrally forming the support part 12 in which the bending groove 10 and the support groove 12a corresponding to the bending groove 112 are extended. By forming integrally the support portion, such as the wiper die is provided separately in the conventional bend die not only the cumbersome setting work to set the wiper die, but also the end of the end of the wiper die in contact with the bending groove wear or tear It can be prevented at the source.

In addition, the pipe inserted to be bent by the support portion formed integrally with the tip of the bending roll can be more stably supported with the pressure die.

The clamp 130 has a first clamp 132 provided to be in contact with the bending groove 112 of the bending roll 10, and the pipe inserted with the first clamp 132 so as not to flow when rotating with the rotating member The second clamp 134 is configured to be reciprocated by a reciprocating member such as a normal cylinder, and is configured to rotate together with the rotating member 20.

The first clamp 132 has a seating portion 132a, in which a seating groove 132a 'is formed to be in contact with the bending groove 112, and is integrally extended from the seating portion 132a so as to be normally bolted to the rotating member. It is composed of a fixing part 132b to be fixed.

The rotating member 20 is a fixed block 22, one clamp 130 in contact with the bending roll 10, that is, the first clamp 132 is mounted by bolting, and the upper end of the fixing block 22 And the lower end is composed of an upper block 24 and a lower block 26 which are mounted by ordinary bolting or the like and rotated by a power source with a bending roll interposed therebetween.

As described above, according to the present invention, first, the pipe to be bent is inserted into the bending groove of the bending roll 10 and the seating groove 132a 'of the first clamp 132, as shown in FIG. It is inserted through the support groove of the support portion 12 formed at the tip of the bending roll. When the pipe is inserted into the support groove, the bending groove and the seating groove, the pressure die 125 and the second clamp 134 are moved to the pipe side to support the support. 12 and the pressure die 125 support the pipe, and the first and second clamps 132 and 134 grip the pipe without fluidity.

Then, as the rotary member 20 rotates as shown in FIG. 4B as the power source is driven, that is, fixed to the fixed block between the upper and lower blocks 24 and 26 and the upper and lower blocks. The pipe is bent on the bending groove 112 while the first clamp 132 and the second clamp 134 rotate.

At this time, the bending groove 112 and the support groove of the support portion 12 of the bending roll 10 can be a stable support can be made by supporting a longer length of the pipe, any spaced between the bending groove and the support groove Since there is no gap, the bent portion is not deformed or broken.

In addition, the first clamp 132 serves to guide the bent portion of the pipe on the bending groove 112 as the rotation is performed together with the second clamp 134 together with the rotating member 20. The bending can be made more stable and smooth, so that the curvature of the pipe can be made precisely and accurately.

Accordingly, the present invention basically prevents the end of the wiper die in contact with the bending groove due to the rotation of the bending die, such as wear or tearing, thereby fundamentally preventing a part of the bending die from being damaged, as well as the pipe. The bending part of can also be bent with a more precise and accurate curvature.

10: bending roll 12: support part
12a: support groove 20: rotating member
22: fixed block 24: upper block
26: hablock 100: bending mold
112: bending groove 125: pressure die
130: clamp 132: first clamp
132a: seating portion 132a ': seating groove
132b: fixing part 134: second clamp
134: second clamp

Claims

In the bending mold provided in the bending machine for bending the pipe to the desired radius of curvature,
The bending mold 100,
A bending roll 10 in which a bending groove 112 into which the pipe is inserted is not formed and rotated;
A pressure die 125 supporting the pipe inserted into the bending groove;
A pair of clamps 130 are provided on the opposite side to which the pipe is inserted, and the clamps are provided on the upper and lower portions of the bending roll to rotate together with the rotating member 20 rotated by a power source. Bending mold for pipe bending machine.

According to claim 1, wherein the support roll 12 is formed integrally formed on the front end side of the bending roll 10, the support groove 12a corresponding to the bending groove 112 is extended. Bending mold for pipe bending machine.

The method of claim 1, wherein the clamp 130 is composed of a first clamp 132 provided in contact with the bending groove of the bending roll, and a second clamp 134 for holding a pipe inserted together with the first clamp Bending mold for pipe bending machine, characterized in that rotated with the rotating member.

According to claim 3, The first clamp 132 has a seating portion (132a) is formed with a seating groove (132a ') in contact with the bending groove, and a fixed portion fixed to the rotating member integrally extending from the seating portion ( 132b), a bending die for a pipe bending machine.

According to any one of claims 1 to 4, The rotating member 20 is a fixed block 22 is mounted with one clamp 130 in contact with the bending roll, and the top and bottom of the fixed block is mounted And a upper block 24 and a lower block 26 rotated by a power source with a bending roll interposed therebetween.