Straightening device for stainless steel seamless steel pipe

Abstract

The utility model discloses a straightening device for a stainless steel seamless steel pipe, which comprises a base, two guide rails respectively arranged on two sides of the base, a straightening mechanism capable of moving back and forth along the guide rails, a driving mechanism for driving the straightening mechanism to move, and two clamps respectively connected to the front end and the rear end of the base in a telescopic manner, the straightening mechanism comprises a machine frame and straightening blocks, the two sides of the machine frame are connected to the corresponding guide rails in a sliding mode through the guide blocks respectively, and walking gears at the bottom of the machine frame are meshed with the toothed rails on the base. The steel pipe can be quickly and efficiently straightened, and the coaxiality of the straightened steel pipe is high; the two sides of the machine frame of the straightening mechanism are guided through the guide blocks, and the two walking gears are matched with the toothed rails during displacement, so that the straightening mechanism is accurate in displacement and not prone to deviation, and the straightening precision of the steel pipe is guaranteed.

Description

Technical Field

[0001] The utility model relates to a straightening device for a stainless seamless steel pipe. Background Art

[0002] In the prior art, the straightening device for stainless steel seamless steel pipes generally includes a frame and multiple groups of straightening wheels arranged in the frame. The stainless steel seamless steel pipes are straightened between the groups of straightening wheels. Due to the effect of residual stress, straightening of stainless steel seamless steel pipes using this device often requires multiple straightening operations, which is inefficient, and the coaxiality of the steel pipes straightened in this way is not high enough. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a more efficient and highly accurate straightening device for seamless stainless steel pipes.

[0004] The technical scheme of the utility model is: a straightening device for seamless stainless steel pipes, comprising a base, two guide rails respectively arranged on both sides of the base, a straightening mechanism for moving forward and backward along the guide rails, a driving mechanism for driving the straightening mechanism to move, and two clamps respectively telescopically connected to the front and rear ends of the base;

[0005] The straightening mechanism includes a frame and a straightening block arranged at the bottom of the frame, the straightening block has a hole corresponding to the steel pipe, and the frame has guide blocks corresponding to the guide rails on both sides, the two guide blocks are slidably connected to the corresponding guide rails, and a rack is symmetrically arranged on the base inside the two guide rails. The two sides of the bottom of the frame are also rotatably connected to the corresponding racks. The two running gears are respectively meshed with the corresponding racks, and the two running gears are symmetrically arranged on both sides of the straightening block;

[0006] When the steel pipe is straightened, both ends of the steel pipe are always clamped and pulled by the clamps, and the steel pipe also passes through the hole on the straightening block. The straightening mechanism moves forward and backward along the guide rail and the rack rail to straighten the steel pipe.

[0007] Specifically, the frame and the guide block are an integrally formed structure.

[0008] Specifically, the driving mechanism is a reduction motor.

[0009] Furthermore, the frame is provided with two transmission gears respectively corresponding to the travel gears, the two transmission gears are connected by a transmission shaft and respectively mesh with the corresponding travel gears, and the transmission shaft is connected to the output shaft of the reduction motor.

[0010] Furthermore, the reduction motor is fixed on a trolley, and when the reduction motor drives the straightening mechanism to move, the trolley moves synchronously.

[0011] Furthermore, a track corresponding to the trolley is provided on one side of the base, and the trolley moves forward and backward along the track.

[0012] Specifically, the hole of the straightening block is an hourglass-shaped hole.

[0013] Furthermore, a mounting hole corresponding to the straightening block is provided at the bottom of the frame, and the straightening block is inserted into the mounting hole and fixed on the mounting hole by fixing bolts.

[0014] Furthermore, a hydraulic cylinder is respectively provided at the front and rear ends of the base, and the two clamps are respectively fixed on the piston rods of the two hydraulic cylinders.

[0015] Furthermore, the guide block has a V-shaped groove, and the guide rail has a protrusion of a corresponding shape.

[0016] The beneficial effects of the utility model are as follows: the structure is simple, the straightening mechanism moves back and forth to straighten the steel pipe, and the two ends of the steel pipe are always pulled by the two clamps, so that the steel pipe can be straightened quickly and efficiently, and the coaxiality of the steel pipe after straightening is relatively high; the two sides of the frame of the straightening mechanism are guided by guide blocks, and during displacement, the two running gears cooperate with the rack rails, so that the displacement of the straightening mechanism is accurate and not easy to offset, so as to ensure the accuracy of the straightening of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the straightening mechanism of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the straightening block in the utility model.

[0020] In the figure: base 1, guide rail 2, straightening mechanism 3, clamp 4, frame 5, straightening block 6, steel pipe 7, hole 8, guide block 9, rack 10, travel gear 11, transmission gear 12, transmission shaft 13, reduction motor 14, trolley 15, hydraulic cylinder 16. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0022] Combination Figure 1-3 As shown, a straightening device for a seamless stainless steel pipe comprises a base 1, two guide rails 2 respectively arranged on both sides of the base 1, a straightening mechanism 3 that moves forward and backward along the guide rails 2, a driving mechanism that drives the straightening mechanism 3 to move, and two clamps 4 that are telescopically connected to the front and rear ends of the base 1 respectively;

[0023] The straightening mechanism 3 includes a frame 5 and a straightening block 6 arranged at the bottom of the frame 5, the straightening block 6 has a hole 8 corresponding to the steel pipe 7, the frame 5 has guide blocks 9 corresponding to the guide rails 2 on both sides, the two guide blocks 9 are respectively slidably connected to the corresponding guide rails 2, and a rack 10 is symmetrically arranged on the base 1 inside the two guide rails 2. The bottom of the frame 5 also has travel gears 11 rotatably connected to the corresponding racks 10 on both sides, the two travel gears 11 are respectively meshed with the corresponding racks 10, and the two travel gears 11 are symmetrically arranged on both sides of the straightening block 6;

[0024] When the steel pipe 7 is straightened, both ends of the steel pipe 7 are always clamped and pulled by the clamp 4. The steel pipe 7 also passes through the hole 8 on the straightening block 6. The straightening mechanism 3 moves forward and backward along the guide rail 2 and the rack rail 10 to straighten the steel pipe 7.

[0025] The above structure is simple in construction. The straightening mechanism 3 moves back and forth to straighten the steel pipe 7. The two ends of the steel pipe 7 are always pulled by the two clamps 4, so that the steel pipe 7 can be straightened quickly and efficiently. The coaxiality of the steel pipe 7 after straightening is relatively high. The frame 5 of the straightening mechanism 3 is guided by guide blocks 9 on both sides. During displacement, the two running gears 11 cooperate with the rack 10, so that the displacement of the straightening mechanism 3 is accurate and not easy to offset, so as to ensure the accuracy of the straightening of the steel pipe 7.

[0026] In another embodiment, the frame 5 and the guide block 9 are an integrally formed structure.

[0027] Specifically, the driving mechanism is a reduction motor 14 .

[0028] In another embodiment, if Figure 2 As shown, the frame 5 is further provided with two transmission gears 12 corresponding to the travel gears 11 respectively. The two transmission gears 12 are connected by a transmission shaft 13 and respectively mesh with the corresponding travel gears 11. The transmission shaft 13 is connected to the output shaft of the reduction motor 14.

[0029] In another embodiment, if Figure 1 As shown, the reduction motor 14 is fixed on a trolley 15. When the reduction motor 14 drives the straightening mechanism 3 to move, the trolley 15 moves synchronously.

[0030] In another embodiment, if Figure 1 As shown, a track corresponding to the trolley 15 is also provided on one side of the base 1, and the trolley 15 moves forward and backward along the track to avoid deviation when the trolley 15 moves.

[0031] In another embodiment, if Figure 3 As shown, the hole 8 of the straightening block 6 is an hourglass-shaped hole to avoid an excessively large contact area with the steel pipe 7 that would increase the friction.

[0032] In another embodiment, in combination Figure 2 and Figure 3 As shown, the bottom of the frame 5 is provided with a mounting hole corresponding to the straightening block 6, and the straightening block 6 is inserted into the mounting hole 8 and fixed on the mounting hole by fixing bolts. The detachable structure facilitates the replacement of straightening blocks 6 of different models to adapt to the processing of steel pipes 7 of different specifications.

[0033] In another embodiment, a hydraulic cylinder 16 is respectively disposed at the front and rear ends of the base 1 , and the two clamps 4 are respectively fixed on the piston rods of the two hydraulic cylinders 16 .

[0034] In another embodiment, the clamp 4 is a hydraulic clamp 4 or a pneumatic clamp 4 .

[0035] In another embodiment, if Figure 2 As shown, the guide block 9 has a V-shaped groove, and the guide rail 2 has a protrusion of a corresponding shape, so that the guide block 9 and the guide rail 2 can cooperate more stably to avoid the frame 5 from being offset.

Claims

1. A straightening device for seamless stainless steel pipes, characterized in that: It comprises a base (1), two guide rails (2) respectively arranged on both sides of the base (1), a straightening mechanism (3) which moves forward and backward along the guide rails (2), a driving mechanism which drives the straightening mechanism (3) to move, and two clamps (4) which are respectively telescopically connected to the front and rear ends of the base (1); The straightening mechanism (3) comprises a frame (5) and a straightening block (6) arranged at the bottom of the frame (5), the straightening block (6) having a hole (8) corresponding to the steel pipe (7), the frame (5) having guide blocks (9) corresponding to the guide rails (2) on both sides, the two guide blocks (9) being slidably connected to the corresponding guide rails (2), the bases (1) inside the two guide rails (2) being symmetrically provided with a rack rail (10), the bottom sides of the frame (5) also having travel gears (11) rotatably connected to the corresponding rack rails (10), the two travel gears (11) being respectively meshed with the corresponding rack rails (10), and the two travel gears (11) being symmetrically provided on both sides of the straightening block (6); When the steel pipe (7) is straightened, both ends of the steel pipe (7) are always clamped and pulled by the clamp (4), and the steel pipe (7) also passes through the hole (8) on the straightening block (6). The straightening mechanism (3) moves forward and backward along the guide rail (2) and the rack rail (10) to straighten the steel pipe (7).

2. A straightening device for seamless stainless steel pipe according to claim 1, characterized in that: The frame (5) and the guide block (9) are an integrally formed structure.

3. A straightening device for seamless stainless steel pipe according to claim 2, characterized in that: The driving mechanism is a reduction motor (14).

4. A straightening device for seamless stainless steel pipe as claimed in claim 3, characterized in that: The frame (5) is also provided with two transmission gears (12) respectively corresponding to the travel gears (11); the two transmission gears (12) are connected via a transmission shaft (13) and respectively mesh with the corresponding travel gears (11); the transmission shaft (13) is connected to the output shaft of the reduction motor (14).

5. A straightening device for seamless stainless steel pipe as claimed in claim 4, characterized in that: The reduction motor (14) is fixed on a trolley (15). When the reduction motor (14) drives the straightening mechanism (3) to move, the trolley (15) moves synchronously.

6. A straightening device for seamless stainless steel pipe as claimed in claim 5, characterized in that: A track corresponding to the trolley (15) is also provided on one side of the base (1), and the trolley (15) moves forward and backward along the track.

7. A straightening device for seamless stainless steel pipe according to claim 6, characterized in that: The hole (8) of the straightening block (6) is an hourglass-shaped hole.

8. A straightening device for seamless stainless steel pipes as claimed in claim 7, characterized in that: The bottom of the frame (5) is provided with a mounting hole corresponding to the straightening block (6); the straightening block (6) is inserted into the mounting hole (8) and fixed to the mounting hole by means of fixing bolts.

9. A straightening device for a seamless stainless steel pipe as claimed in claim 8, characterized in that: A hydraulic cylinder (16) is respectively provided at the front and rear ends of the base (1), and the two clamps (4) are respectively fixed on the piston rods of the two hydraulic cylinders (16).

10. A straightening device for seamless stainless steel pipe according to claim 9, characterized in that: The guide block (9) has a V-shaped groove, and the guide rail (2) has a convex block of a corresponding shape.

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