CN211888645U - Die connecting device on seamless steel pipe pressure straightening machine - Google Patents
Die connecting device on seamless steel pipe pressure straightening machine Download PDFInfo
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- CN211888645U CN211888645U CN201922486341.5U CN201922486341U CN211888645U CN 211888645 U CN211888645 U CN 211888645U CN 201922486341 U CN201922486341 U CN 201922486341U CN 211888645 U CN211888645 U CN 211888645U
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Abstract
The utility model relates to a mould connecting device on seamless steel pipe pressure straightening machine. The die comprises a short support (11) connected with an upper die holder (1) and a long support (13) connected with a lower die holder (6), wherein the short support (11) and the long support (13) are respectively provided with a corresponding kidney-shaped groove; a screw rod (12) is arranged to penetrate through the long support (13) and the kidney-shaped groove of the short support (11), and a fixing piece is arranged to fix the screw rod (12). The utility model discloses can simplify the mould and connect, make connecting screw not receive the shearing force, reduce the production maintenance and improve and trade mould efficiency.
Description
Technical Field
The utility model relates to a mould connecting device on seamless steel pipe pressure straightening machine. The device is mainly used for fixing the upper die of the large-caliber steel pipe pressure straightening machine.
Background
At present, when a common seamless steel pipe is locally straightened by a pressure straightening machine, an upper die and an upper die base are connected by adopting an upper die concave surface countersunk hole and an inner hexagon bolt. The bolts are large in quantity and arranged inside, the upper die base needs to be detached when dies with different specifications are replaced at each time, and time is long. The during operation mould pushes down and contacts the steel pipe, because steel pipe surface unevenness, the mould except that receive the power of steel pipe vertical direction, also can the atress at the actual horizontal direction, makes the mould have certain drunkenness at the horizontal direction. The bolt between the die and the die holder is easily cut off, the screw hole on the die holder is roughened, and the maintenance is time-consuming and labor-consuming.
SUMMERY OF THE UTILITY MODEL
To the above defect, the utility model aims to provide a mould connecting device on seamless steel pipe pressure straightening machine rational in infrastructure, reduce the production maintenance and improve the efficiency of die change.
Therefore, the utility model adopts the technical scheme that: a connecting device for an upper die of a seamless steel tube pressure straightener comprises a short support (11) connected with an upper die holder (1) and a long support (13) connected with a lower die holder (6), wherein the short support (11) and the long support (13) are respectively provided with a corresponding kidney-shaped groove;
a screw rod (12) is arranged to penetrate through the long support (13) and the kidney-shaped groove of the short support (11), and a fixing piece is arranged to fix the screw rod (12).
Furthermore, the fixing piece comprises a nut (9) arranged on the screw rod (12) in a penetrating mode, and a gasket (10) is arranged between the nut (9) and the waist-shaped groove of the short support (11).
Furthermore, a cotter pin (8) arranged at the upper part of the nut (9) is arranged on the screw rod (12).
Furthermore, the long support (13) and the short support (11) are arranged in parallel, and the centers of the kidney-shaped grooves of the long support (13) and the short support (11) are on the same straight line.
The utility model has the advantages that: the die connection can be simplified, so that the connecting screw rod is not subjected to shearing force, the production maintenance is reduced, and the die replacement efficiency is improved; the connecting device of the utility model is only influenced by the gravity of the mould when not working; when the connecting device works, the upper die transmits the pressure from the steel pipe to the die holder, and the connecting device is not stressed; when the surface of the steel pipe is not flat and the die horizontally moves, the connecting screw rod can move in the device, so that the steel pipe is prevented from being broken due to shearing force.
The utility model discloses a short support of upper die base both sides welding, the long support of last mould both sides welding of each specification connects long support and short support through the screw rod to connect mould and die holder. The long and short support seats are provided with kidney-shaped grooves, and the screw rod moves in the kidney-shaped grooves when the die horizontally moves without being subjected to shearing force.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is an enlarged view of section A.
In the figure, 1-an upper die holder, 2-an upper die connecting device, 3-an upper die, 4-a steel pipe, 5-a lower die, 6-a lower die holder, 7-a carrier roller, 8-a split pin, 9-a nut, 10-a gasket, 11-a short support, 12-a screw and 13-a long support.
Detailed Description
An upper die connecting device 2 of a seamless steel tube pressure straightening machine comprises a short support 11 connected with an upper die holder 1 and a long support 13 connected with a lower die holder 6, wherein the short support 11 and the long support 13 are respectively provided with a corresponding kidney-shaped groove;
a screw 12 is arranged to penetrate through the long support 13 and the kidney-shaped groove of the short support 11, and a fixing part is arranged to fix the screw 12.
Further, the fixing part comprises a nut 9 arranged on the screw rod 12 in a penetrating mode, and a gasket 10 is arranged between the nut 9 and the waist-shaped groove of the short support 11.
Further, a cotter 8 is arranged on the screw 12 at the upper part of the nut 9.
Further, the long support 13 and the short support 11 are arranged in parallel, and the centers of the kidney-shaped grooves of the long support 13 and the short support 11 are on the same straight line.
The patent of the utility model solves the technical scheme that its technical problem used: respectively welding 4 short supports 11 and long supports 13 on the outer sides of the upper die holder 1 and the upper die 3 of each specification by taking the left and right 30-degree directions of the circle center of the die as the reference; the support is provided with a kidney-shaped groove and an opening kidney-shaped hole, the screw 12 is directly inserted into the kidney-shaped groove from the opening kidney-shaped hole during connection, and the cotter pin 8 is inserted after the nut 9 is slightly tightened. The upper die 3 contacts the surface of the steel pipe 4 during working, the upper die 3 generates certain elastic deformation relative to the upper die base 1, and the support connecting screw 12 has no pretightening force and is in a movable state. When the upper die 3 moves, the four screw rods 12 slide in the waist-shaped holes of the supports, so that the connecting screw rods 12 are free from shearing force.
The utility model discloses the waist shape hole center of short support 11 and long support 13 is on same straight line to guarantee that long support 13 on the mould 3 and short support 11 on the upper die base 1 can both accurately connect on each specification, screw rod 12 can freely move about.
Claims (4)
1. The upper die connecting device of the seamless steel tube pressure straightening machine is characterized by comprising a short support (11) connected with an upper die holder (1) and a long support (13) connected with a lower die holder (6), wherein the short support (11) and the long support (13) are respectively provided with a corresponding kidney-shaped groove;
a screw rod (12) is arranged to penetrate through the long support (13) and the kidney-shaped groove of the short support (11), and a fixing piece is arranged to fix the screw rod (12).
2. The die connecting device on the seamless steel pipe pressure straightening machine as claimed in claim 1, characterized in that the fixing piece comprises a nut (9) arranged on the screw rod (12) in a penetrating way, and a gasket (10) is arranged between the nut (9) and the kidney-shaped groove of the short support (11).
3. The die connecting device on the seamless steel pipe pressure straightening machine as claimed in claim 2, characterized in that a cotter pin (8) is arranged on the screw rod (12) at the upper part of the nut (9).
4. The die connecting device on the seamless steel pipe pressure straightening machine according to the claim 1, characterized in that the long support (13) and the short support (11) are arranged in parallel, and the centers of the kidney-shaped grooves of the long support (13) and the short support (11) are on the same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922486341.5U CN211888645U (en) | 2019-12-31 | 2019-12-31 | Die connecting device on seamless steel pipe pressure straightening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922486341.5U CN211888645U (en) | 2019-12-31 | 2019-12-31 | Die connecting device on seamless steel pipe pressure straightening machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211888645U true CN211888645U (en) | 2020-11-10 |
Family
ID=73296373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922486341.5U Active CN211888645U (en) | 2019-12-31 | 2019-12-31 | Die connecting device on seamless steel pipe pressure straightening machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211888645U (en) |
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2019
- 2019-12-31 CN CN201922486341.5U patent/CN211888645U/en active Active
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