CN204122540U - A kind of space is without straightway Curved Continuous pipe mold - Google Patents

Abstract

A continuous pipe bending die with no straight line in space, including a bending die, a bending die insert, a clamping die, a compression die, an anti-wrinkle die, and a mandrel for supporting a pipe; the first insert is provided with a first clamping groove, the first clamping die is provided with a first positioning groove, and the first clamping groove and the first positioning groove cooperate to form a first mold cavity; the second insert is provided with a second clamping groove, and the second There is a second positioning groove on the clamping die, and the second clamping groove and the second positioning groove cooperate to form a second mold cavity; the shape of the second mold cavity matches the external shape of the pipe after being bent by the first mold cavity ; Both the first insert and the second insert are provided with positioning blocks, and the clamping dies are respectively provided with positioning grooves matching with the positioning blocks. The utility model designs the shape of the next mold cavity based on the shape of the bent pipe after the previous bending process, and can bend the continuous bent pipe without the straight section in the space.

Description

A Continuous Bending Die with No Straight Sections in Space

technical field

The utility model relates to a continuous bending pipe mold with no straight line section in space.

Background technique

As a key lightweight component, metal thin-walled pipe fittings have the advantages of light weight, high strength, energy saving and environmental protection, and easy digitization. They have been widely used in aerospace, vehicles, ships, petrochemical and other high-tech fields. Then, considering the design performance and the limitation of the space layout, the pipe fittings are often designed as complex three-dimensional bends, so that they can be more flexibly adapted to the limited space and make the structure more compact, such as aerospace, ships and automobiles. There is a space elbow connected by a straight line between two bends, which is easy to bend and form. However, there is no straight line continuous bend in the space, and there is no straight line continuous bend in the space. After the first bend is formed, when the second bend is performed, since there is no straight line between the two bends, the conventional cylindrical clamping concave cannot be used. The groove is clamped, and a special mold structure is required to achieve bending and forming.

Contents of the invention

In order to overcome the disadvantage that the existing pipe bending die cannot bend the continuous pipe without straight line in space, the utility model provides a continuous pipe bending die with good clamping effect and reasonable force distribution in space without straight line.

The technical scheme that this utility model adopts newly is:

A continuous pipe bending die with no straight line in space, comprising a bending die, a bending die insert, a clamping die, a compression die, an anti-wrinkle die and a mandrel for supporting pipe fittings,

The bending die insert includes a first insert and a second insert that cooperate with the first bend die and the second bend die respectively;

The first insert is provided with a first clamping groove, and the first clamping mold is provided with a first positioning groove, and the first clamping groove and the first positioning groove are cooperated to form a curved first line. curved first cavity;

The second insert is provided with a second clamping groove, and the second clamping die is provided with a second positioning groove, and the second clamping groove and the second positioning groove cooperate to form a second clamping groove for bending the second curved second cavity;

The shape of the second mold cavity is adapted to the external shape of the pipe after being bent by the first mold cavity;

The anti-wrinkle mold includes a first anti-wrinkle mold and a second anti-wrinkle mold respectively matched with the first bending mold and the second bending mold;

Both the first insert and the second insert are provided with positioning blocks, and the clamping dies are respectively provided with positioning grooves that cooperate with the positioning blocks.

Preferably, positioning blocks are provided on the side and top of the second insert, and matching positioning grooves are provided at corresponding positions of the clamping die.

The new beneficial effects of the utility model are:

1. The utility model designs the shape of the next mold cavity based on the outer shape of the bent pipe after the previous bend, and can bend a continuous bend without a straight line in the space.

2. Set matching positioning blocks and positioning grooves, which limit the relative sliding between the bending die insert and the clamping die, so that the bending die insert and the clamping die can cooperate more effectively.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic structural view of the utility model.

Fig. 3 is a schematic diagram of a continuous curved pipe without a straight section in space processed by the utility model.

Detailed ways

With reference to the accompanying drawings, a continuous pipe bending die with no straight line in space includes a bending die 1, a bending die insert 2, a clamping die 3, a compression die 4, an anti-wrinkle die 5 and a mandrel 6 for supporting pipe fittings,

The bending die insert 2 includes a first insert 21 and a second insert 22 that cooperate with the first bending die 11 and the second bending die 12 respectively;

The first insert 21 is provided with a first clamping groove 211, and the first clamping die 31 is provided with a first positioning groove 311, and the first clamping groove 211 and the first positioning groove 311 are cooperatively formed The first cavity for bending the first bend;

The second insert 22 is provided with a second clamping groove 221, and the second clamping die 32 is provided with a second positioning groove 321, and the second clamping groove 221 and the second positioning groove 321 are cooperatively formed A second cavity for bending the second bend;

The shape of the second mold cavity is adapted to the external shape of the pipe after being bent by the first mold cavity;

The anti-wrinkle mold 5 includes a first anti-wrinkle mold 51 and a second anti-wrinkle mold 52 which cooperate with the first bending mold 11 and the second bending mold 12 respectively;

Both the first insert 21 and the second insert 22 are provided with a positioning block 71 , and the clamping die 3 is respectively provided with a positioning groove 72 matching with the positioning block 71 .

Preferably, positioning blocks 71 are provided on the side and top of the second insert 22 , and matching positioning grooves 72 are provided at corresponding positions of the clamping die 3 .

The bending die 1 includes a first bending die 11 and a second bending die 12 stacked up and down. The radii of the first bending die 11 and the second bending die 12 are determined by the required bending radius: if the first bending radius and the second bending radius of the elbow are the same, then the first bending die 11 The radius of the radius and the radius of the second bending die 12 are also the same; if the first bending radius and the second bending radius of the elbow are not the same, the radius of the first bending die 11 and the radius of the second bending die 12 are also different .

The shapes of the second insert 22 and the second clamping groove 221 need to be determined according to the shape of the bent pipe after the first bending. Design the shape of the next mold cavity based on the shape of the bent pipe after the previous bend, and repeat it continuously to design a mold that can bend a continuous bend in a space with multiple bends without a straight line.

The first clamping groove 211 and the first positioning groove 311 cooperate to form a first mold cavity for bending the first bend, and the shape of the first mold cavity is the same as that of the pipe. The second clamping groove 221 cooperates with the second positioning groove 321 to form a second cavity for bending the second bend. Taking a round pipe as an example, the first mold cavity is cylindrical. Since the pipe will be deformed during the first bend, the cross section of the second clamping groove 221 will not be semicircular, but the clamping groove 221 The bending radius of the first bending die 11 is equal to that of the first bending die 11, and the second die cavity is not cylindrical. The shape of the second die cavity must be designed according to the first bend of the first die cavity. .

The clamping range of the second insert 22 and the second clamping die 32 to the bent pipe also needs to be determined according to the bending radius and bending angle of the previous bend. Reasonable clamping is required, the clamping force is sufficient, and the bent pipe is not properly clamped. The outside causes wear and tear.

The content described in the embodiments of this specification is only an enumeration of the implementation forms of the new practical concept, and the protection scope of the new utility model should not be regarded as limited to the specific forms stated in the embodiments. The scope also extends to the equivalent technical means that those skilled in the art can think of according to the practical new concept.

Claims (2)

1. space is without a straightway Curved Continuous pipe mold, comprises bending die, bending die insert, clamping die, pressing mold, anti-wrinkling mould and the plug for support tubes, it is characterized in that:

Described bending die insert comprises the first insert and the second insert that coordinate with the first bending die and the second bending die respectively;

Described first insert is provided with the first clamp groove, and the first clamping die is provided with the first locating slot, and described first clamp groove and the first locating slot coordinate to be formed and be used for bending the first curved die cavity of first;

Described second insert is provided with the second clamp groove, and the second clamping die is provided with the second locating slot, and described second clamp groove and the second locating slot coordinate to be formed and be used for bending the second curved die cavity of second;

Pipe fitting outer shape after the shape of described second die cavity and employing the first die cavity bend is suitable;

Described anti-wrinkling mould, comprises the first anti-wrinkling mould and the second anti-wrinkling mould that coordinate with the first bending die and the second bending die respectively;

Described first insert and the second insert are equipped with locating piece, described clamping die are respectively equipped with the locating slot coordinated with described locating piece.

2. a kind of space as claimed in claim 1 is without straightway Curved Continuous pipe mold, it is characterized in that: side and the top of the second insert are all provided with locating piece, and the correspondence position of described clamping die is equipped with the locating slot matched.