Drawing device for precise seamless steel pipe

Abstract

The utility model discloses a drawing device for a precise seamless steel pipe, and relates to the technical field of seamless steel pipe production, a plurality of groups of assembly plates are arranged and connected between two groups of opposite brake chains, the upper ends of plate frames of the plurality of groups of assembly plates are all provided with back shore table mechanisms, and the upper end of the plate frame of the assembly plate at the corner end is provided with a drawing clamping jaw mechanism. According to the design, mechanical butt clamping of the drawing clamping jaw mechanism is utilized to be matched with seamless steel pipes of different sizes, then the combination of the braking chain and the braking chain wheel is used as drawing driving force, on one hand, the drawing clamping jaw mechanism is pulled to move horizontally, the seamless steel pipes in the drawing machine head are drawn out, and on the other hand, the jacking table mechanism is driven to turn upwards circularly and be exposed; the supporting height of the top supporting table mechanism is adjusted in advance, the drawn steel pipe is subjected to horizontal supporting traction work, and the situation that the seamless steel pipe deforms due to the gravity of the seamless steel pipe during drawing is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipe production, in particular to a drawing device for a precision seamless steel pipe. Background Art

[0002] Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation. They are usually produced and processed by drawing process equipment, such as a drawing device for a cold drawing production line disclosed in the China Patent Network (public announcement number CN221246509U). When such a device is drawing the steel pipe, it can effectively support the pipe body of the long steel pipe through a belt transmission mechanism to prevent it from bending and deformation. By providing a stable and uniform supporting force, the steel pipe can maintain its original shape during the cold drawing process and avoid problems caused by excessive length during the transmission process.

[0003] However, there are still some shortcomings in the above-mentioned open patents and the seamless steel pipe drawing devices adopted in the existing market: the existing method of using a belt conveyor to support the pipe body of the drawn steel pipe to prevent deformation, and its belt can only adapt to the flat support work of a single type of steel pipe, and cannot flexibly match the flat support and deformation prevention work of seamless steel pipes of different sizes, and the flexible adaptability performance is relatively single. To this end, the technicians in this field provide a precision seamless steel pipe drawing device to solve the problems raised in the above background technology. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a drawing device for a precision seamless steel pipe, which solves the problem that the prior seamless steel pipe drawing device proposed in the above background technology has relatively poor flexible support performance for flat bracing and anti-deformation of the drawn steel pipe.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a drawing device for a precision seamless steel pipe, comprising a brake frame and a drawing head arranged along the transmission direction of the brake frame;

[0006] Both ends of the bracket of the brake frame are rotatably connected with brake shafts, and both ends of the shaft rod of each set of brake shafts are provided with brake sprockets, and two horizontally adjacent sets of the brake sprockets are connected by brake chain transmission, and multiple sets of assembly plates are arranged and connected between the two opposite sets of brake chains;

[0007] The upper ends of the plate frames of the plurality of groups of assembly plates are all equipped with a supporting platform mechanism, and the upper end of the plate frame of the assembly plate at the most corner end is equipped with a pulling claw mechanism.

[0008] As a further technical solution of the utility model: The top support table mechanism includes a top support seat. Inside the support of the top support seat, a transmission wire sleeve is rotatably connected in the vertical direction. On one side of the support of the top support seat, a knob handle opposite to the transmission wire sleeve is rotatably connected in the horizontal direction. Inside the sleeve of the transmission wire sleeve, a lifting screw rod is connected through. At the top of the rod of the lifting screw rod, a V-shaped top support clamping arm is provided.

[0009] As a further technical solution of the utility model: In the middle of the rotating shaft of the knob handle, a second transmission worm is provided. Outside the sleeve of the transmission wire sleeve, a second transmission worm wheel meshing with the second transmission worm is sleeved.

[0010] As a further technical solution of the utility model: The drawing clamping jaw mechanism includes a braking shell and a guide rail disc installed at the port of the shell of the braking shell. Inside the chute of the guide rail disc, four groups of mechanical clamping arms are slidably connected in a cross form. In the middle of the bottom of the braking shell, a rotating seat is installed. On the upper end of the support of the rotating seat, a spiral guide rail is provided. At the bottom of the mechanical clamping arm, a guiding sliding seat guiding with the spiral guide rail is provided. On one side of the rotating seat inside the shell of the braking shell, a transmission shaft is provided. On the other side of the rotating seat inside the shell of the braking shell, a transmission motor is provided. The transmission motor and the transmission shaft are connected by a synchronous belt.

[0011] As a further technical solution of the utility model: In the middle of the rod of the transmission shaft, a first transmission worm is provided. In the middle of the shaft seat of the rotating seat, a first transmission worm wheel meshing with the first transmission worm is provided.

[0012] As a further technical solution of the utility model: At one end of the rod of one of the braking shafts, a braking motor fixed on the braking frame is installed.

[0013] The utility model provides a drawing device for precision seamless steel pipes, which has the following beneficial effects compared with the prior art:

[0014] When the seamless steel pipe drawing device of this design is in use, it uses the mechanical clamping of the drawing clamping jaw mechanism to match and adapt to seamless steel pipes of different sizes, clamp and fix the seamless steel pipe. Then, based on the combination of the braking chain and the braking sprocket as the drawing driving force, on the one hand, it pulls the drawing clamping jaw mechanism to translate and pull out the seamless steel pipe in the drawing head. On the other hand, it drives the top support table mechanism to cycle up and turn out. By adjusting the support height of the top support table mechanism in advance, it conducts a flat support traction operation on the drawn steel pipe, avoiding the deformation of the seamless steel pipe due to its own gravity during drawing. It has flexible adaptability and can adapt to the drawing and flat support work of seamless steel pipes of different sizes. Description of the Drawings

[0015] Figure 1It is a schematic structural diagram of a drawing device for precision seamless steel pipes;

[0016] Figure 2 It is a schematic structural diagram of a drawing jaw mechanism in a drawing device for precision seamless steel pipes;

[0017] Figure 3 It is an unfolded schematic diagram of a drawing jaw mechanism in a drawing device for precision seamless steel pipes;

[0018] Figure 4 It is a schematic structural diagram of a top support platform mechanism in a drawing device for precision seamless steel pipes;

[0019] Figure 5 It is an unfolded schematic diagram of a top support platform mechanism in a drawing device for precision seamless steel pipes.

[0020] In the figure: 1, braking frame; 2, drawing head; 3, braking shaft; 4, braking chain; 5, braking sprocket; 6, braking motor; 7, drawing jaw mechanism; 71, braking housing; 72, guide rail disc; 73, mechanical clamping arm; 74, rotating seat; 75, guiding sliding seat; 76, spiral guide rail; 77, first driving worm gear; 78, first driving worm; 79, transmission shaft; 710, synchronous belt; 711, driving motor; 8, top support platform mechanism; 81, top support seat; 82, knob handle; 83, lifting lead screw; 84, top support clamping arm; 85, transmission thread sleeve; 86, second driving worm gear; 87, second driving worm; 9, assembly plate. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5The utility model provides a technical solution for a drawing device for a precision seamless steel pipe: a drawing device for a precision seamless steel pipe, comprising a brake frame 1 and a drawing machine head 2 arranged along the transmission direction of the brake frame 1, a plurality of assembly plates 9 are provided with a top support platform mechanism 8 at the upper end of the plate frame, the top support platform mechanism 8 comprises a top support seat 81, a transmission thread sleeve 85 is connected to the support of the top support seat 81 in a vertical direction, and a knob handle 82 opposite to the transmission thread sleeve 85 is connected to the support of the top support seat 81 in a horizontal direction, a lifting screw 83 is connected to the shaft sleeve of the transmission thread sleeve 85, and a V-shaped top support clamp arm 84 is provided at the top end of the shaft of the lifting screw 83. A second transmission worm 87 is provided in the middle of the rotating shaft of the knob handle 82, and a second transmission worm wheel 86 meshing with the second transmission worm 87 is sleeved on the outer side of the shaft sleeve of the transmission wire sleeve 85. By rotating the knob handle 82, the second transmission worm 87 is driven to rotate, and the meshing transmission of the second transmission worm 87 and the second transmission worm wheel 86 is utilized to drive the transmission wire sleeve 85 to rotate, thereby converting the spiral thrust into a lifting thrust, pushing the lifting screw 83 to lift and retract, and pre-adjusting the height of the top support clamp arm 84 so that the top support clamp arm 84 can support the drawn seamless steel pipe in a flat manner to avoid deformation of the seamless steel pipe due to gravity during continuous drawing.

[0023] A pulling clamp mechanism 7 is installed at the upper end of the plate frame of the assembly plate 9 at the corner end. The pulling clamp mechanism 7 includes a brake shell 71 and a guide plate 72 installed at the shell port of the brake shell 71. Four sets of mechanical clamp arms 73 are slidably connected in a cross-shaped manner inside the slide groove of the guide plate 72. A rotating seat 74 is installed in the middle of the shell bottom of the brake shell 71. A transmission shaft 79 is arranged on one side of the shell of the brake shell 71 facing the rotating seat 74, and a transmission motor 711 is arranged on the other side of the shell of the brake shell 71 facing the rotating seat 74, and the transmission motor 711 and the transmission shaft 79 are connected. They are connected through a synchronous belt 710. A first transmission worm 78 is provided in the middle of the shaft of the transmission shaft 79. A first transmission worm wheel 77 meshing with the first transmission worm 78 is provided in the middle of the shaft seat of the rotating seat 74. The transmission motor 711 is controlled to work. Under the transit transmission of the synchronous belt 710, the transmission shaft 79 is driven to rotate, and then the first transmission worm 78 is driven to rotate. The meshing transmission of the first transmission worm 78 and the first transmission worm wheel 77 is utilized to drive the rotating seat 74 to rotate. As a power source, the mechanical clamping arm 73 is pushed to clamp and fix the seamless steel pipe.

[0024] A spiral guide rail 76 is provided at the upper end of the support of the rotating seat 74, and a guide slide 75 guided by the spiral guide rail 76 is provided at the bottom of the mechanical clamping arm 73. When the rotating seat 74 rotates, the spiral guide rail 76 is driven to rotate. The sliding combination of the spiral guide rail 76 and the guide slide 75 is utilized to convert the rotational thrust into a horizontal thrust, thereby pushing the mechanical clamping arm 73 to slide symmetrically along the guide rail of the guide rail plate 72. By clamping the mechanical clamping arm 73, seamless steel pipes of different sizes can be clamped and fixed, and the flexibility and adaptability are better.

[0025] Both ends of the bracket of the brake frame 1 are rotatably connected with brake shafts 3, and both ends of the shaft rod of each group of brake shafts 3 are provided with brake sprockets 5. The two horizontally adjacent groups of brake sprockets 5 are connected by brake chains 4, and multiple groups of assembly plates 9 are arranged and connected between the two opposite groups of brake chains 4. One end of the shaft rod of one group of brake shafts 3 is equipped with a brake motor 6 fixed to the brake frame 1. By controlling the operation of the brake motor 6, the brake shaft 3 is driven to rotate, and then the combination of the brake sprocket 5 and the brake chain 4 is driven to rotate, pulling the assembly plate 9 to move horizontally. On the one hand, the drawing jaw mechanism 7 is pulled to translate to pull the seamless steel pipe out of the drawing machine head 2. On the other hand, the top support platform mechanism 8 is pulled to flip up cyclically to perform synchronous flat support work on the pulled seamless steel pipe.

[0026] The working principle of the utility model is as follows: when drawing the seamless steel pipe, the knob handle 82 in the support platform mechanism 8 is rotated one by one in advance, and the transmission combination of the second transmission worm 87 and the second transmission worm wheel 86 is used to drive the transmission wire sleeve 85 to rotate, and the spiral thrust is converted into a lifting thrust, and the lifting screw rod 83 is pushed to lift and retract, and the height of the support clamp arm 84 is pre-adjusted and calibrated, so that the support clamp arm 84 can flatly support the stretched seamless steel pipe, so as to avoid the seamless steel pipe from being deformed due to gravity when it is continuously drawn;

[0027] Further, the pulling jaw mechanism 7 is aligned with the seamless steel pipe, and then the transmission motor 711 is controlled to work. Under the transfer transmission of the synchronous belt 710, the transmission shaft 79 is driven to rotate, and the transmission combination of the first transmission worm 78 and the first transmission worm wheel 77 is used to drive the rotating seat 74 to rotate. As a driving source, the spiral guide rail 76 is driven to rotate. The sliding combination of the spiral guide rail 76 and the guide slide 75 is used to convert the rotation thrust into a horizontal thrust, and the mechanical clamp arm 73 is pushed to slide symmetrically along the guide rail of the guide rail plate 72 to clamp and fix seamless steel pipes of different sizes.

[0028] After clamping and fixing the seamless steel pipe, control the braking motor 6 to work, drive the braking shaft 3 to rotate, and then drive the combination of the braking sprocket 5 and the braking chain 4 to rotate. As a tensile driving source, pull the assembly plate 9 to move horizontally. On the one hand, pull the drawing jaw mechanism 7 to translate and pull the seamless steel pipe out of the drawing head 2. On the other hand, pull the top support table mechanism 8 to turn up cyclically to perform synchronous flat support work on the drawn seamless steel pipe, so that the seamless steel pipe is pulled and produced in a stable state.

[0029] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model, unless otherwise specifically described and defined, are implemented according to the conventional means in the art.

Claims

1. A drawing device for a precision seamless steel pipe, characterized in that: It comprises a brake frame (1) and a drawing machine head (2) arranged along the transmission direction of the brake frame (1); Both ends of the bracket of the brake frame (1) are rotatably connected to brake shafts (3), and both ends of the shaft rod of each set of brake shafts (3) are provided with brake sprockets (5), two horizontally adjacent sets of the brake sprockets (5) are transmission-connected via brake chains (4), and a plurality of assembly plates (9) are arranged and connected between the two opposite sets of brake chains (4); The upper ends of the plate frames of the plurality of groups of assembly plates (9) are all installed with a supporting platform mechanism (8), and the upper end of the plate frame of the assembly plate (9) at the most corner end is installed with a pulling clamp mechanism (7).

2. A precision seamless steel pipe drawing device according to claim 1, characterized in that: The supporting platform mechanism (8) comprises a supporting seat (81), a transmission thread sleeve (85) is connected to the supporting seat of the supporting seat (81) in a vertical direction, and a knob handle (82) is connected to the supporting seat of the supporting seat (81) in a horizontal direction, which is opposite to the transmission thread sleeve (85). A lifting screw rod (83) is connected to the shaft sleeve of the transmission thread sleeve (85), and a V-shaped supporting clamp arm (84) is arranged at the top of the shaft of the lifting screw rod (83).

3. A precision seamless steel pipe drawing device according to claim 2, characterized in that: A second transmission worm (87) is arranged in the middle of the rotating shaft of the knob handle (82), and a second transmission worm wheel (86) meshing with the second transmission worm (87) is sleeved on the outer side of the shaft sleeve of the transmission wire sleeve (85).

4. The drawing device for a precision seamless steel pipe according to claim 1, characterized in that: The pulling clamp mechanism (7) comprises a brake shell (71) and a guide plate (72) installed at a shell port of the brake shell (71); four groups of mechanical clamp arms (73) are slidably connected in a cross-shaped manner inside the slide groove of the guide plate (72); a rotating seat (74) is installed in the middle of the shell bottom of the brake shell (71); a spiral guide rail (76) is arranged on the upper end of the support of the rotating seat (74); a guide slide seat (75) guided by the spiral guide rail (76) is arranged at the bottom of the mechanical clamp arm (73); a transmission shaft (79) is arranged on one side of the shell of the brake shell (71) facing the rotating seat (74); and a transmission motor (711) is arranged on the other side of the shell of the brake shell (71) facing the rotating seat (74); and the transmission motor (711) and the transmission shaft (79) are connected by a synchronous belt (710).

5. A precision seamless steel pipe drawing device according to claim 4, characterized in that: A first transmission worm (78) is arranged in the middle of the shaft of the transmission shaft (79), and a first transmission worm wheel (77) meshing with the first transmission worm (78) is arranged in the middle of the shaft seat of the rotating seat (74).

6. The drawing device for a precision seamless steel pipe according to claim 1, characterized in that: One end of the shaft rod of one group of the brake shafts (3) is equipped with a brake motor (6) fixed on the brake frame (1).

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