CN211915102U - Pipe flange single-hole positive positioning die for numerical control pipe bending machine with welding before bending - Google Patents
Pipe flange single-hole positive positioning die for numerical control pipe bending machine with welding before bending Download PDFInfo
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- CN211915102U CN211915102U CN202020405513.1U CN202020405513U CN211915102U CN 211915102 U CN211915102 U CN 211915102U CN 202020405513 U CN202020405513 U CN 202020405513U CN 211915102 U CN211915102 U CN 211915102U
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Abstract
The invention discloses a pipe flange single-hole positive positioning die for a welding-before-bending numerical control pipe bender, which comprises an outer ring column, wherein the outer ring surface of the outer ring column is connected with two mutually parallel quadrangular prisms which are symmetrically distributed relative to a symmetrical plane passing through the axis of the outer ring column; the two quadrangular columns and the outer ring surface of the outer ring column form a groove; one end face of the outer ring column parallel to the axis of the outer ring column is connected with a positioning column; an inner ring column is arranged inside the outer ring column; the axis of the inner ring column is superposed with the axis of the outer ring column, and the outer ring surface of the inner ring column is tightly attached to the inner ring surface of the outer ring column; a plurality of bolt holes penetrating through two end faces of the inner ring column are formed in the inner ring column and are parallel to the axis of the inner ring column; the invention can ensure the accurate positioning position of the end flange of the straight pipe with the flange.
Description
Technical Field
The invention relates to the technical field of pipe welding-before-bending, in particular to a pipe flange single-hole positive positioning die for a welding-before-bending numerical control pipe bending machine.
Background
At present, the technology of welding before bending a pipe in China is basically in a blank state, and domestic pipe processing enterprises all use the traditional technology of welding before bending the pipe to process the pipe. The processing technology of the flange which is bent before welding has the characteristics of pipe waste, low assembly efficiency, poor welding quality and the like, and is one of the main reasons for limiting domestic pipe fitting processing enterprises to be incapable of improving the production efficiency. The outfitting company develops the development of the pipe bending machine after welding the pipe so as to improve the processing informatization, digitization and automation degree of the ship pipe fitting.
Through the research on the processing technology and the process of welding and bending the pipe firstly, the traditional pipe bender is found to have no flange positioning requirement of a straight pipe with a flange, and a trolley chuck of the pipe bender is generally used for clamping the tail end of the pipe. The process of first welding and then bending the pipe needs to accurately position the end flange of the straight pipe with the flange at a right position (a single hole is right), then reversely rotate the pre-turning angle and other corresponding angles to enable the flange at the head end of the straight pipe with the flange to be right in double holes, then rotate the initial angle and feed the first straight pipe section, and then the first bending of the pipe can be carried out.
In order to accurately position the end flange of the straight pipe with the flange (right single hole), a simple and effective structural part for accurately positioning the flange position (right single hole) needs to be designed to ensure the accurate positioning position of the end flange of the straight pipe with the flange (right single hole).
Disclosure of Invention
The invention aims to solve the technical problem of providing a pipe flange single-hole positive positioning die for a welding-before-bending numerical control pipe bender, so as to ensure the accurate positioning position (single-hole positive) of a tail end flange of a straight pipe with a flange.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pipe flange single-hole positive positioning die for a numerical control pipe bender capable of welding before bending comprises an outer ring column, wherein the outer ring surface of the outer ring column is connected with two mutually parallel quadrangular prisms which are symmetrically distributed relative to a symmetrical plane passing through the axis of the outer ring column; the two quadrangular columns and the outer ring surface of the outer ring column form a groove;
one end face of the outer ring column parallel to the axis of the outer ring column is connected with a positioning column;
an inner ring column is arranged inside the outer ring column; the axis of the inner ring column is superposed with the axis of the outer ring column, and the outer ring surface of the inner ring column is tightly attached to the inner ring surface of the outer ring column;
a plurality of bolt holes penetrating through two end faces of the inner ring column are formed in the inner ring column and are parallel to the axis of the inner ring column.
Preferably, the axial length of the inner annular column is shorter than the axial length of the outer annular column.
Preferably, there are 5 bolt holes.
Preferably, the positioning column is a cylinder.
Preferably, the positioning column is located on a symmetrical plane between the two quadrangular prisms.
Preferably, the plurality of bolt holes are all at the same vertical distance from the axis of the inner ring column.
Preferably, the included angle of each two adjacent bolt holes relative to the axis center is the same.
Preferably, a fastening bolt is arranged in the bolt hole.
Preferably, each quadrangular prism has two side surfaces which are respectively positioned on the same plane with the two end surfaces of the outer ring column.
The invention has the advantages that after the die is attached to the trolley chuck of the pipe bending machine, the die can be arranged on the trolley chuck of the pipe bending machine through the fastening bolt. The grooves formed by the two quadrangular prisms can be matched with the clamping tooth direction of the trolley chuck of the pipe bending machine, so that the die can be quickly positioned with the trolley chuck of the pipe bending machine. And then, a bolt hole of the tail end flange of the straight pipe is opposite to a positioning column of the die, a clamping tooth of a trolley chuck of the pipe bender is controlled to clamp the tail end flange, and the position of the tail end flange of the straight pipe is accurately positioned right for a single hole. Therefore, the invention ensures the accurate positioning position (single hole alignment) of the end flange of the straight pipe with the flange.
Drawings
FIG. 1 is a front view of the inventive die;
FIG. 2 is a perspective view of the inventive die;
FIG. 3 is an exploded view of the present invention in use with the mold installed;
fig. 4 is a perspective view of the die of the present invention after installation.
In the figure, 1, an outer ring column, 11, an inner ring column, 2, a positioning column, 3, a fastening bolt, 4, a quadrangular prism, 5, a straight pipe, 51, a tail end flange, 6 and a pipe bender trolley chuck.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the pipe flange single-hole positive positioning die for the numerical control pipe bender with the first welding and the second bending comprises an outer ring column 1, wherein the outer ring surface of the outer ring column 1 is connected with two mutually parallel quadrangular prisms 4, and the two quadrangular prisms 4 are symmetrically distributed relative to a symmetrical plane passing through the axis of the outer ring column 1; the two quadrangular columns 4 and the outer ring surface of the outer ring column 1 form a groove;
one end face of the outer ring column 1 parallel to the axis of the outer ring column 1 is connected with a positioning column 2;
an inner ring column 11 is arranged inside the outer ring column 1; the axis of the inner ring column 11 is superposed with the axis of the outer ring column 1, and the outer ring surface of the inner ring column 11 is tightly attached to the inner ring surface of the outer ring column 1;
a plurality of bolt holes penetrating through two end faces of the inner ring column 11 are formed in the inner ring column 11 and parallel to the axis of the inner ring column 11.
The specific details are as follows:
the axial length of the inner ring column 11 is shorter than the axial length of the outer ring column 1.
The bolt hole is provided with 5.
The positioning column 2 is a cylinder.
The positioning column 2 is located on the symmetrical plane between the two quadrangular prisms 4.
The vertical distances between the bolt holes and the axis of the inner ring column 11 are the same.
And the included angles of the adjacent two bolt holes relative to the axis center are the same.
And fastening bolts 3 are arranged in the bolt holes.
Each quadrangular prism 4 is provided with two side surfaces which are respectively positioned on the same plane with the two end surfaces of the outer ring column 1.
In use, as shown in fig. 3 and 4, after the die is attached to the pipe bender trolley chuck 6, the die is mounted on the pipe bender trolley chuck 6 through the fastening bolt 3. The grooves formed by the two quadrangular prisms 4 can be matched with the clamping tooth direction of the pipe bender trolley chuck 6, so that the die can be quickly positioned with the pipe bender trolley chuck 6.
Next, the straight pipe 5 with the end flange 51 is placed on the bender: a bolt hole of a tail end flange 51 of a straight pipe 5 is aligned to a positioning column 2 of a die, a trolley chuck 6 of a pipe bending machine is controlled to clamp a tooth to clamp the tail end flange 51, the tail end flange 51 of the straight pipe 5 is accurately positioned to be a right single hole, then the pipe bending machine is controlled to reversely rotate corresponding angles such as a pre-rotation angle according to corresponding programs, so that double holes of a head end flange of the straight pipe 5 are right, then an initial angle is rotated, a first straight pipe section is fed, and bending processing of a first bend of the pipe can be carried out.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (9)
1. A pipe flange single-hole positive positioning die for a welding-before-bending numerical control pipe bender is characterized by comprising an outer ring column (1), wherein the outer ring surface of the outer ring column (1) is connected with two mutually parallel quadrangular prisms (4), and the two quadrangular prisms (4) are symmetrically distributed relative to a symmetrical plane passing through the axis of the outer ring column (1); the two quadrangular columns (4) and the outer ring surface of the outer ring column (1) form a groove;
a positioning column (2) is connected to one end face of the outer ring column (1) in parallel with the axis of the outer ring column (1);
an inner ring column (11) is arranged inside the outer ring column (1); the axis of the inner ring column (11) is superposed with the axis of the outer ring column (1), and the outer ring surface of the inner ring column (11) is tightly attached to the inner ring surface of the outer ring column (1);
a plurality of bolt holes penetrating through two end faces of the inner ring column (11) are formed in the inner ring column (11) and parallel to the axis of the inner ring column (11).
2. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 1, wherein the axial length of the inner ring column (11) is shorter than that of the outer ring column (1).
3. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 1, wherein 5 bolt holes are arranged.
4. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 1, wherein the positioning column (2) is a cylinder.
5. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 1 or 4, wherein the positioning column (2) is positioned on the symmetrical plane between the two quadrangular prisms (4).
6. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 1, wherein the vertical distances between the plurality of bolt holes and the axis of the inner ring column (11) are the same.
7. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 6, wherein the included angles of the two adjacent bolt holes relative to the axis center are the same.
8. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 1, wherein a fastening bolt (3) is arranged in the bolt hole.
9. The pipe flange single-hole positive positioning die for the weld-before-bend numerical control pipe bending machine according to claim 1, wherein each quadrangular prism (4) has two side surfaces which are respectively positioned on the same plane with the two end surfaces of the outer ring column (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020405513.1U CN211915102U (en) | 2020-03-26 | 2020-03-26 | Pipe flange single-hole positive positioning die for numerical control pipe bending machine with welding before bending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020405513.1U CN211915102U (en) | 2020-03-26 | 2020-03-26 | Pipe flange single-hole positive positioning die for numerical control pipe bending machine with welding before bending |
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| Publication Number | Publication Date |
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| CN211915102U true CN211915102U (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020405513.1U Active CN211915102U (en) | 2020-03-26 | 2020-03-26 | Pipe flange single-hole positive positioning die for numerical control pipe bending machine with welding before bending |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477818A (en) * | 2021-06-23 | 2021-10-08 | 江阴市宏业机械制造有限公司 | Pipe bending process for bending flanged bent pipe by using numerical control pipe bender |
-
2020
- 2020-03-26 CN CN202020405513.1U patent/CN211915102U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477818A (en) * | 2021-06-23 | 2021-10-08 | 江阴市宏业机械制造有限公司 | Pipe bending process for bending flanged bent pipe by using numerical control pipe bender |
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