Low-noise high-precision automatic straightening machine for seamless steel pipe

Abstract

The low-noise high-precision automatic straightening machine comprises a base and a straightening block connected to the upper portion of the base in a lifting mode, a V-shaped groove is formed in the top of the base, the two ends of the V-shaped groove extend to the two ends of the base, a first arc-shaped groove corresponding to a straightened steel pipe is formed in the bottom of the V-shaped groove, and a second arc-shaped groove corresponding to the straightened steel pipe is formed in the bottom of the V-shaped groove. The lower end of the straightening block is provided with a convex block corresponding to the shape of the V-shaped groove, the bottom of the convex block is further provided with a second arc-shaped groove corresponding to the straightened steel pipe, and the two ends of the V-shaped groove are respectively and telescopically connected with a top block for preventing the steel pipe from moving left and right.

Description

Technical Field

[0001] The utility model relates to a low-noise and high-precision automatic straightening machine for seamless steel pipes. Background Art

[0002] In the prior art, the straightening machine for seamless steel pipes generally includes a frame and a plurality of straightening rollers arranged on the frame. When the equipment is in operation, the rotation of the straightening rollers and the friction with the steel pipes will generate huge noise, and the straightening accuracy depends on the installation accuracy of the straightening rollers. The precision of the processed steel pipes is poor. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies of the prior art and provide a low-noise and high-precision automatic straightening machine for seamless steel pipes.

[0004] The technical solution of the utility model is: a low-noise and high-precision automatic straightening machine for seamless steel pipes, comprising a base and a straightening block which is lifted and connected above the base;

[0005] The top of the base has a "V"-shaped groove, both ends of the "V"-shaped groove extend to both ends of the base, and the bottom of the "V"-shaped groove is a first arc groove corresponding to the straightened steel pipe;

[0006] The lower end of the straightening block has a convex block corresponding to the "V"-shaped groove, and the bottom of the convex block also has a second arc groove corresponding to the steel pipe to be straightened;

[0007] The two ends of the "V"-shaped groove are telescopically connected with a top block to prevent the steel pipe from being displaced left and right.

[0008] Specifically, the length of the protrusion corresponds to the length of the steel pipe and is smaller than the length of the “V”-shaped groove.

[0009] Furthermore, it also includes a bracket, on which a hydraulic cylinder is provided, and a piston rod of the hydraulic cylinder is connected to the straightening block.

[0010] Furthermore, the support is composed of two pairs of front and rear columns and an equipment platform arranged on the top of the two pairs of columns, and the hydraulic cylinder is fixed on the top in the middle of the equipment platform.

[0011] Furthermore, a guide rod is fixed to each of the four corners on the top of the straightening block, and the equipment platform is provided with guide holes corresponding to the guide rods, and the upper end of each guide rod passes through the corresponding guide hole.

[0012] Furthermore, a reinforcing plate is provided at the connection between each of the columns and the equipment platform.

[0013] Furthermore, a seat body is provided on the outer side of both ends of the base, and the outer ends of the two top blocks are respectively connected to a rod body, and the seat body has a through hole corresponding to the rod body. The two rod bodies pass through the through holes on the corresponding seat bodies respectively, and springs are also respectively mounted on the rod body between the top block and the corresponding seat body.

[0014] Specifically, the top block is a cylinder with an outer diameter corresponding to that of the steel pipe.

[0015] Furthermore, the top block is truncated into a cone shape at one end facing the steel pipe, so that a front end of the top block is partially inserted into the end of the steel pipe.

[0016] Furthermore, the base is fixed to the ground by fixing bolts, and the cross-section of the upper end of the base is in the shape of an isosceles trapezoid.

[0017] The beneficial effects of the utility model are as follows: the utility model has a simple structure, and since the steel pipe is adjusted in a hydraulic manner, the utility model generates little noise during the straightening process; the steel pipe is straightened by the first arc groove and the second arc groove, and the straightened steel pipe has high precision and good consistency; since the base and the straightening block are matched with the "V"-shaped groove and the corresponding convex blocks for straightening, the straightening of steel pipes with a large distortion amplitude can be adapted; top blocks are arranged at both ends of the base to prevent the steel pipe from being displaced left and right, and the top blocks always abut against the two ends of the steel pipe during the straightening process, which can ensure that the steel pipe will not be displaced left and right, and prevent the steel pipe from deviating from its position due to deformation caused by the straightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a transverse cross-sectional view of the utility model;

[0019] Figure 2 It is a longitudinal cross-sectional view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the top block of the utility model.

[0021] In the figure: base 1, straightening block 2, "V"-shaped groove 3, first arc groove 4, protrusion 5, second arc groove 6, top block 7, hydraulic cylinder 8, column 9, equipment platform 10, guide rod 11, reinforcement plate 12, seat body 13, rod body 14, spring 15. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Combination Figure 1-3 As shown, a low-noise and high-precision automatic straightening machine for seamless steel pipes comprises a base 1 and a straightening block 2 which is lifted and connected above the base 1;

[0024] The top of the base 1 has a "V"-shaped groove 3, both ends of the "V"-shaped groove 3 extend to both ends of the base 1, and the bottom of the "V"-shaped groove 3 is a first arc groove 4 corresponding to the straightened steel pipe;

[0025] The lower end of the straightening block 2 has a convex block 5 corresponding to the "V"-shaped groove 3, and the bottom of the convex block 5 also has a second arc groove 6 corresponding to the steel pipe to be straightened;

[0026] The two ends of the "V"-shaped groove 3 are telescopically connected to a top block 7 to prevent the steel pipe from being displaced left and right.

[0027] The working principle of the above structure is: the steel pipe to be straightened is placed in the "V"-shaped groove 3, and the two top blocks 7 support the two ends of the steel pipe. When the steel pipe is straightened, the straightening block 2 is lowered, and under the action of the "V"-shaped groove 3 and the protrusion 5, the steel pipe is gradually squeezed into between the first arc groove 4 and the second arc groove 6. In the straightening process, the two top blocks 7 are pushed backward with the deformation of the steel pipe, and always support the two ends of the steel pipe to avoid the left and right displacement of the steel pipe. Finally, the straightening block 2 and the base 1 are completely closed, and the steel pipe is straightened between the first arc groove 4 and the second arc groove 6; after the straightening of the steel pipe is completed, the straightening block 2 is reset, pushing the two top blocks 7 to move outward, and then the steel pipe is hooked out with a hook to complete the straightening of the steel pipe.

[0028] The beneficial effects of the above structure are: since the steel pipe is adjusted by hydraulic means, the noise generated during the straightening process is small; the steel pipe is straightened by the first arc groove 4 and the second arc groove 6, and the straightened steel pipe has high precision and good consistency; since the base 1 and the straightening block 2 are matched with the "V"-shaped groove 3 and the corresponding protrusion 5 for straightening, it can adapt to the straightening of steel pipes with a large distortion amplitude; top blocks 7 are provided at both ends of the base 1 to prevent the steel pipe from being displaced left and right. The top block 7 always abuts against the two ends of the steel pipe during the straightening process, which can ensure that the steel pipe will not be displaced left and right, and prevent the steel pipe from deviating from its position due to deformation caused by straightening.

[0029] In another embodiment, if Figure 1 As shown, the length of the protrusion 5 corresponds to the length of the steel pipe and is smaller than the length of the “V”-shaped groove 3 to avoid the position of the top block 7.

[0030] In another embodiment, in combination Figure 1 and Figure 2 As shown, it also includes a bracket, on which a hydraulic cylinder 8 is provided. The piston rod of the hydraulic cylinder 8 is connected to the straightening block 2 to drive the straightening block 2 to move up and down.

[0031] In another embodiment, in combination Figure 1 and Figure 2As shown, the support is composed of two pairs of front and rear columns 9 and an equipment platform 10 arranged on the top of the two pairs of columns 9, and the hydraulic cylinder 8 is fixed on the top in the middle of the equipment platform 10.

[0032] In another embodiment, in combination Figure 1 and Figure 2 As shown, a guide rod 11 is fixed to each of the four corners of the top of the straightening block 2, and the equipment platform 10 has guide holes corresponding to the guide rods 11. The upper end of each guide rod 11 passes through the corresponding guide hole to ensure the stability of the adjustment block when it is lifted or lowered.

[0033] In another embodiment, in combination Figure 1 and Figure 2 As shown, a reinforcing plate 12 is further provided at the connection between each of the upright posts 9 and the equipment platform 10 to ensure the overall stability of the bracket.

[0034] In another embodiment, if Figure 1 As shown, a seat body 13 is respectively provided on the outer side of both ends of the base 1, and the outer ends of the two top blocks 7 are respectively connected to a rod body 14, and the seat body 13 has a through hole corresponding to the rod body 14. The two rod bodies 14 pass through the through holes on the corresponding seat bodies 13 respectively, and springs 15 are also respectively mounted on the rod bodies 14 between the top block 7 and the corresponding seat bodies 13. Under the action of the spring 15, the top block 7 always abuts against the two ends of the steel pipe when the steel pipe is straightened.

[0035] In another embodiment, the top block 7 is a cylinder with an outer diameter corresponding to that of the steel pipe.

[0036] In another embodiment, if Figure 3 As shown, the top block 7 is in a truncated cone shape at one end facing the steel pipe, so that a portion of the front end of the top block 7 is inserted into the end of the steel pipe, so that the top block 7 can better play a retaining role.

[0037] In another embodiment, if Figure 2 As shown, the base 1 is fixed on the ground by fixing bolts, and the cross-section of the upper end of the base 1 is in the shape of an isosceles trapezoid, so that the base 1 has better stability.

Claims

1. A low-noise and high-precision automatic straightening machine for seamless steel pipes, characterized in that: It comprises a base (1) and a straightening block (2) which is connected to the top of the base (1) in a lifting manner; The top of the base (1) is provided with a V-shaped groove (3), the two ends of the V-shaped groove (3) extend to the two ends of the base (1), and the bottom of the V-shaped groove (3) is a first arc-shaped groove (4) corresponding to the straightened steel pipe; The lower end of the straightening block (2) has a convex block (5) in the shape of a "V"-shaped groove (3), and the bottom of the convex block (5) also has a second arc-shaped groove (6) corresponding to the steel pipe to be straightened; The two ends of the "V"-shaped groove (3) are also telescopically connected to a top block (7) for preventing the steel pipe from being displaced left and right.

2. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 1, characterized in that: The length of the protrusion (5) corresponds to the length of the steel pipe and is smaller than the length of the "V"-shaped groove (3).

3. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 2, characterized in that: It also comprises a bracket, on which a hydraulic cylinder (8) is provided, and a piston rod of the hydraulic cylinder (8) is connected to the straightening block (2).

4. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 3, characterized in that: The support is composed of two pairs of front and rear columns (9) and an equipment platform (10) arranged on the top of the two pairs of columns (9), and the hydraulic cylinder (8) is fixed on the top in the middle of the equipment platform (10).

5. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 4, characterized in that: A guide rod (11) is fixed to each of the four corners at the top of the straightening block (2); the equipment platform (10) has guide holes corresponding to the guide rods (11); and the upper end of each guide rod (11) passes through the corresponding guide hole.

6. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 5, characterized in that: A reinforcing plate (12) is also provided at the connection between each of the upright columns (9) and the equipment platform (10).

7. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 6, characterized in that: A seat body (13) is respectively provided on the outer sides of both ends of the base (1); the outer ends of the two top blocks (7) are respectively connected to a rod body (14); the seat body (13) has a through hole corresponding to the rod body (14); the two rod bodies (14) respectively pass through the through holes on the corresponding seat bodies (13); and springs (15) are respectively sleeved on the rod bodies (14) between the top blocks (7) and the corresponding seat bodies (13).

8. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 7, characterized in that: The top block (7) is a cylinder with an outer diameter corresponding to that of the steel pipe.

9. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 8, characterized in that: The top block (7) is truncated into a cone shape at one end facing the steel pipe, so that a portion of the front end of the top block (7) is inserted into the end of the steel pipe.

10. A low-noise and high-precision automatic straightening machine for seamless steel pipes as claimed in claim 9, characterized in that: The base (1) is fixed on the ground by means of fixing bolts, and the cross-section of the upper end of the base (1) is in the shape of an isosceles trapezoid.

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