Efficient cold drawing machine for seamless steel pipe production

Abstract

The invention discloses an efficient cold-drawing machine for seamless steel pipe production, and relates to the technical field of seamless steel pipe production, the efficient cold-drawing machine comprises a base, the base is transversely and slidably sleeved with a moving sleeve, the upper portion of the moving sleeve is provided with a three-disc clamping jaw, one side of the base is provided with a servo motor, and an output shaft of the servo motor is connected with a ball screw; the servo motor drives the ball screw to work so as to drive the moving sleeve to move, a concave frame is arranged on the upper portion of the base, a moving seat is longitudinally arranged in the concave frame in a sliding mode, and a plurality of cold drawing grooves of different sizes are formed in one face of the moving seat from top to bottom. According to the efficient cold-drawing machine for seamless steel pipe production, cold-drawing operation can be conducted on seamless steel pipes of different sizes, the size of the cold-drawing groove can be adjusted before cold drawing, a steel pipe can conveniently penetrate through the cold-drawing groove, then the steel pipe is clamped, cold-drawing operation is conducted after clamping, and the efficient cold-drawing machine is convenient and fast to use.

Description

Technical Field

[0001] The invention relates to the technical field of seamless steel pipe production, in particular to a high-efficiency cold drawing machine for seamless steel pipe production. Background Art

[0002] With the sustained and rapid development of my country's economy, the demand for seamless steel pipes, as an important material in infrastructure construction, machinery manufacturing, petrochemicals and other fields, has increased year by year. The production process of seamless steel pipes is also being continuously optimized and upgraded to meet the growing market demand. Among them, cold drawing process, as an important method for producing seamless steel pipes, has been widely used because it can accurately control the size of steel pipes, improve mechanical properties and surface quality.

[0003] When the steel tube cold drawing machine is working, the steel tube must first pass through the die hole and then perform the cold drawing operation. However, if the die hole diameter is too small, one end of the steel tube cannot pass through the die hole. If the die hole is too large, although one end of the steel tube can pass through, the resistance will become smaller during cold drawing, which will affect the quality of the cold drawing of the steel tube. In addition, the traditional steel tube cold drawing machine can only perform cold drawing operations on steel tubes of a single size. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high-efficiency cold drawing machine for the production of seamless steel pipes, which solves the problem that traditional steel pipe cold drawing machines cannot adapt to the cold drawing needs of steel pipes of different sizes due to the fixed mold aperture, thus affecting the cold drawing quality and production flexibility.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an efficient cold drawing machine for the production of seamless steel pipes, comprising a base, a movable sleeve is provided on the transverse sliding sleeve of the base, a three-disc clamping claw is provided on the upper part of the movable sleeve, a servo motor is installed on one side of the base, the output shaft of the servo motor is connected to a ball screw, and the ball screw is driven by the servo motor to drive the movable sleeve to move, a concave frame is provided on the upper part of the base, a movable seat is provided longitudinally slidingly inside the concave frame, and a plurality of cold drawing grooves of different sizes are provided on one side of the movable seat from top to bottom, and the efficient cold drawing machine for the production of seamless steel pipes also includes an adjustment mechanism for driving the longitudinal displacement of the movable seat.

[0006] A cavity is provided inside the movable seat, and a plurality of annular gears corresponding to the cold-drawn grooves are rotatably provided inside the cavity. A plurality of connecting rods are hinged on the inner side of the annular gears, and arc blocks corresponding to the connecting rods are slidably inserted into the inner side of the cold-drawn grooves. A groove corresponding to the connecting rod is provided on the side of the arc block close to the annular gear, and one end of the connecting rod away from the annular gear is hinged on the inner side of the groove. An adjusting portion for driving the annular gear to rotate is also provided on the movable seat.

[0007] Preferably, the arc-shaped blocks on the inner side of the cold-drawn groove are combined to form a ring, and the size of the ring is the diameter of the steel pipe after cold drawing.

[0008] Preferably, the adjustment part includes a handle rotatably arranged on the upper part of the cavity, the lower end of the handle is located in the movable seat and is vertically connected to a screw rod, the outside of the screw rod is provided with a threaded sleeve through a threaded sleeve, and a driving rack is provided on one side of the threaded sleeve, and the driving rack is meshed with each ring gear in the movable seat.

[0009] Preferably, the adjustment mechanism includes protrusions respectively arranged on both sides of the movable seat and limiting grooves on both sides of the concave frame, the protrusions pass through the limiting grooves and are longitudinally slidably connected with the concave frame, and a rack plate is provided on one side of one of the protrusions, and a stepper motor is installed on the upper side of one side of the concave frame near the limiting groove, and the output shaft of the stepper motor is connected to a driving gear, and the driving gear is meshed with the rack plate.

[0010] Preferably, the high-efficiency cold drawing machine for seamless steel pipe production also includes a cooling mechanism for cooling the cold-drawn steel pipe. The cooling mechanism consists of a driving part and an executive part. The driving part drives the executive part to operate through a ball screw, thereby realizing the cooling operation of the steel pipe.

[0011] Preferably, the driving part includes a limit seat arranged at the edge of the other side of the concave frame and a driven wheel fixedly arranged outside the ball screw, and a driving wheel is rotatably arranged on one side of the limit seat, and the driving wheel and the driven wheel are connected by a belt drive.

[0012] Preferably, a through slot is provided on the upper portion of the base, and the belt passes through the through slot.

[0013] Preferably, the actuator includes an annular cavity and a limiting shaft rotatably arranged on the other side of the limiting seat, the limiting shaft is connected to the driving wheel, the annular cavity corresponds to the position of the three-disc claw, and one end of the limiting shaft is connected to a gear column, an annular tooth block is arranged on the outside of the annular cavity, the annular tooth block is meshed with the gear column, and a nozzle is arranged on the inside of the annular cavity, an annular opening groove is arranged at the end face of the annular cavity, an annular plate is sealingly and rotatably arranged in the annular opening groove, one side of the annular plate is connected to a limiting pipe communicated with the inside of the annular cavity, and one side of the limiting pipe is connected to a delivery pipe, and water is injected into the delivery pipe into the inside of the annular cavity and then sprayed out from the nozzle.

[0014] The present invention provides a high-efficiency cold drawing machine for seamless steel pipe production, which has the following beneficial effects compared with the prior art:

[0015] 1. The efficient cold drawing machine for seamless steel pipe production can perform cold drawing operations on seamless steel pipes of different sizes. Before cold drawing, the size of the cold drawing groove can be adjusted to facilitate the steel pipe to pass through the cold drawing groove, and then clamp the steel pipe. After clamping, cold drawing operation can be performed, which is convenient and quick.

[0016] 2. This seamless steel pipe production high-efficiency cold drawing machine, during the cold drawing process, the ball screw can enable the drive unit to drive the actuator to operate, thereby realizing cooling operations at various positions on the steel pipe, preventing the steel pipe from being damaged due to excessive temperature during cold drawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the concave frame of the present invention;

[0019] Figure 3 It is a schematic diagram of the internal structure of the mobile seat of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the cooling mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the execution unit of the present invention.

[0022] In the figure: 1, base; 101, through groove; 2, moving sleeve; 3, three-disc claw; 4, servo motor; 5, ball screw; 6, concave frame; 7, moving seat; 71, arc block; 72, cavity; 73, ring gear; 74, connecting rod; 75, groove; 76, handle; 77, screw; 78, threaded sleeve; 79, driving rack; 8, cold drawing groove; 9, adjustment mechanism; 91, protrusion; 92 , limit groove; 93, rack plate; 94, stepping motor; 95, driving gear; 10, cooling mechanism; 11, driving unit; 111, limit seat; 112, driving wheel; 113, driven wheel; 114, belt; 12, executive unit; 121, annular cavity; 122, limit shaft; 123, gear column; 124, nozzle; 125, annular plate; 126, limit pipe; 127, conveying pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5, the present invention provides three technical solutions:

[0025] Embodiment 1

[0026] See also Figure 1-Figure 2 In an embodiment of the present invention, a high-efficiency cold drawing machine for producing seamless steel pipes includes a base 1, a movable sleeve 2 is provided on the base 1 for horizontal sliding, a three-disc clamping claw 3 is provided on the upper part of the movable sleeve 2, a servo motor 4 is installed on one side of the base 1, a ball screw 5 is connected to the output shaft of the servo motor 4, and the ball screw 5 is driven by the servo motor 4 to drive the movable sleeve 2 to move, a concave frame 6 is provided on the upper part of the base 1, a movable seat 7 is provided for longitudinal sliding inside the concave frame 6, and a plurality of cold drawing grooves 8 of different sizes are provided on one side of the movable seat 7 from top to bottom, and the high-efficiency cold drawing machine for producing seamless steel pipes also includes an adjustment mechanism 9 for driving the movable seat 7 to move longitudinally.

[0027] See also Figure 2-Figure 3 In the embodiment of the present invention, a cavity 72 is provided inside the movable seat 7, and a plurality of ring gears 73 corresponding to the cold-drawn grooves 8 are rotatably provided inside the cavity 72. A plurality of connecting rods 74 are hinged on the inner side of the ring gear 73. An arc block 71 corresponding to the connecting rod 74 is slidably inserted into the inner side of the cold-drawn groove 8. A groove 75 corresponding to the connecting rod 74 is provided on the side of the arc block 71 close to the ring gear 73. One end of the connecting rod 74 away from the ring gear 73 is hinged on the inner side of the groove 75. An adjusting portion for driving the ring gear 73 to rotate is also provided on the movable seat 7.

[0028] In the above scheme: the ring gear 73 is driven to rotate by the adjustment part, and the connecting rods 74 on the inner side of the ring gear 73 will pull the arc blocks 71 to move, so that the aperture between the arc blocks 71 is larger than the diameter of the steel pipe, and then one end of the steel pipe is passed through the cold drawing groove 8 and the annular cavity 121 and fixed on the three-disc claw 3. After fixing, the handle 76 is turned again to make the arc blocks 71 merge to clamp the steel pipe. After clamping, the servo motor 4 drives the ball screw 5 to work, the ball screw 5 drives the movable sleeve 2 to move, the movable sleeve 2 drives the three-disc claw 3 to move, and the three-disc claw 3 will pull the steel pipe to perform the cold drawing operation.

[0029] For further information, see Figure 2-Figure 3 In the embodiment of the present invention, the arc blocks 71 inside the cold drawing groove 8 are combined to form a ring, and the ring size is the diameter of the steel pipe after cold drawing, so that the steel pipe can be cold drawn to the required diameter.

[0030] For further information, see Figure 2-Figure 3In the embodiment of the present invention, the adjusting portion includes a handle 76 rotatably arranged on the upper part of the cavity 72. The lower end of the handle 76 is located in the movable seat 7 and is vertically connected to a screw rod 77. A threaded sleeve 78 is provided on the outside of the screw rod 77 through a threaded sleeve. A driving rack 79 is provided on one side of the threaded sleeve 78. The driving rack 79 is meshed with each ring gear 73 in the movable seat 7. Then, the handle 76 is rotated to drive the screw rod 77 to rotate, and the screw rod 77 drives the threaded sleeve 78 to move longitudinally, and the driving rack 79 on the threaded sleeve 78 will drive the ring gear 73 to rotate.

[0031] The second embodiment is different from the first embodiment in that:

[0032] See also Figure 1 and Figure 2 In the embodiment of the present invention, the adjustment mechanism 9 includes protrusions 91 respectively arranged on both sides of the movable seat 7 and limiting grooves 92 on both sides of the concave frame 6. The protrusions 91 pass through the limiting grooves 92 and are longitudinally slidably connected with the concave frame 6. A rack plate 93 is arranged on one side of one of the protrusions 91. A stepper motor 94 is installed on the upper side of one side of the concave frame 6 near the limiting grooves 92. The output shaft of the stepper motor 94 is connected to a driving gear 95, and the driving gear 95 is meshed with the rack plate 93.

[0033] In the above scheme: first, the stepper motor 94 drives the driving gear 95 to rotate. Since the driving gear 95 is engaged with the rack plate 93 on the protrusion 91, the driving gear 95 drives the protrusion 91 to move longitudinally when it rotates, thereby driving the movable seat 7 to move longitudinally, so that the corresponding cold drawing groove 8 on the movable seat 7 is aligned with the three-disc claw 3, so as to realize the cold drawing operation of steel pipes of different sizes.

[0034] Embodiment 3 is different from Embodiment 1 in that:

[0035] See also Figure 1 and Figure 4-Figure 5 In the embodiment of the present invention, the high-efficiency cold drawing machine for seamless steel pipe production also includes a cooling mechanism 10 for cooling the cold-drawn steel pipe. The cooling mechanism 10 consists of a driving part 11 and an execution part 12. The driving part 11 drives the execution part 12 to operate through the ball screw 5, thereby realizing the cooling operation of the steel pipe.

[0036] See also Figure 1 and Figure 4-Figure 5 In the embodiment of the present invention, the driving part 11 includes a limit seat 111 arranged at the edge of the other side of the concave frame 6 and a driven wheel 113 fixedly arranged on the outside of the ball screw 5. A driving wheel 112 is rotatably arranged on one side of the limit seat 111, and the driving wheel 112 and the driven wheel 113 are connected by a belt 114.

[0037] In the above scheme: while the ball screw 5 rotates, the ball screw 5 will drive the driven wheel 113 to rotate, the driven wheel 113 makes the belt 114 drive the driving wheel 112 to rotate, and the driving wheel 112 drives the gear column 123 at one end of the limiting shaft 122 to rotate. Since the gear column 123 is meshed with the annular gear block on the annular cavity 121, the rotation of the gear column 123 will drive the annular cavity 121 to rotate, and the nozzle 124 inside the annular cavity 121 will rotate around the steel pipe, and water will be introduced into the delivery pipe 127. The water enters the annular cavity 121 through the limiting pipe 126, and then is sprayed out from the nozzle 124 to cool the steel pipe.

[0038] For further information, see Figure 1 and Figure 4-Figure 5 In the embodiment of the present invention, a through slot 101 is provided on the upper portion of the base 1 , and the belt 114 passes through the through slot 101 .

[0039] Preferably, the actuator 12 includes an annular cavity 121 and a limiting shaft 122 rotatably arranged on the other side of the limiting seat 111, the limiting shaft 122 is connected to the driving wheel 112, the annular cavity 121 corresponds to the position of the three-disc claw 3, and one end of the limiting shaft 122 is connected to a gear column 123, an annular tooth block is arranged on the outside of the annular cavity 121, the annular tooth block is meshed with the gear column 123, and a nozzle 124 is arranged on the inner side of the annular cavity 121, an annular opening groove is arranged at the end surface of the annular cavity 121, an annular plate 125 is sealingly and rotatably arranged in the annular opening groove, one side of the annular plate 125 is connected to a limiting pipe 126 communicated with the inside of the annular cavity 121, and one side of the limiting pipe 126 is connected to a delivery pipe 127, and water is injected into the delivery pipe 127 into the inside of the annular cavity 121 and then sprayed out from the nozzle 124.

[0040] Working principle: First, the stepper motor 94 drives the driving gear 95 to rotate. Since the driving gear 95 is meshed with the rack plate 93 on the protrusion 91, the driving gear 95 drives the protrusion 91 to move longitudinally when it rotates, thereby driving the moving seat 7 to move longitudinally, so that the corresponding cold drawing groove 8 on the moving seat 7 is aligned with the three-disc clamping claw 3, so as to realize the cold drawing operation of steel pipes of different sizes;

[0041] Then, the handle 76 is turned to drive the screw 77 to rotate, and the screw 77 drives the threaded sleeve 78 to move longitudinally, and the driving rack 79 on the threaded sleeve 78 will drive the ring gear 73 to rotate, and the connecting rods 74 inside the ring gear 73 will pull the arc blocks 71 to move, so that the aperture between the arc blocks 71 is larger than the diameter of the steel pipe, and then one end of the steel pipe is passed through the cold drawing groove 8 and the annular cavity 121 and fixed on the three-disc clamping claw 3, and the handle 76 is turned again after fixing, so that the arc blocks 71 are combined to clamp the steel pipe, and after clamping, the servo motor 4 drives the ball screw 5 to work, and the ball screw 5 drives the moving sleeve 2 to move, and the moving sleeve 2 drives the three-disc clamping claw 3 to move, and the three-disc clamping claw 3 will pull the steel pipe to perform the cold drawing operation;

[0042] When the ball screw 5 rotates, the ball screw 5 will drive the driven wheel 113 to rotate, and the driven wheel 113 makes the belt 114 drive the driving wheel 112 to rotate, and the driving wheel 112 drives the gear column 123 at one end of the limiting shaft 122 to rotate. Since the gear column 123 is meshed with the annular gear block on the annular cavity 121, the rotation of the gear column 123 will drive the annular cavity 121 to rotate, and the nozzle 124 inside the annular cavity 121 will rotate around the steel pipe, and water will be introduced into the delivery pipe 127. The water enters the annular cavity 121 through the limiting pipe 126, and then is sprayed out from the nozzle 124 to cool the steel pipe.

[0043] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An efficient cold drawing machine for seamless steel pipe production, comprising a base (1), a movable sleeve (2) being provided on the base (1) as a transverse sliding sleeve, a three-disc clamping claw (3) being provided on the upper part of the movable sleeve (2), a servo motor (4) being installed on one side of the base (1), a ball screw (5) being connected to the output shaft of the servo motor (4), the ball screw (5) being driven by the servo motor (4) to operate so as to drive the movable sleeve (2) to move, and characterized in that: A concave frame (6) is arranged on the upper part of the base (1), a movable seat (7) is arranged inside the concave frame (6) for longitudinal sliding, a plurality of cold drawing grooves (8) of different sizes are arranged on one side of the movable seat (7) from top to bottom, and the high-efficiency cold drawing machine for seamless steel pipe production also includes an adjustment mechanism (9) for driving the movable seat (7) to move longitudinally; The movable seat (7) is provided with a cavity (72) inside, and a plurality of annular gears (73) corresponding to the respective cold-drawn grooves (8) are rotatably arranged inside the cavity (72), and a plurality of connecting rods (74) are hingedly connected to the inner side of the annular gear (73), and an arc block (71) corresponding to the respective connecting rods (74) is slidably inserted through the inner side of the cold-drawn groove (8), and a groove (75) corresponding to the connecting rod (74) is provided on the side of the arc block (71) close to the annular gear (73), and one end of the connecting rod (74) away from the annular gear (73) is hingedly connected to the inner side of the groove (75), and the movable seat (7) is also provided with an adjusting portion for driving the annular gear (73) to rotate.

2. The high-efficiency cold drawing machine for seamless steel pipe production according to claim 1, characterized in that: The arc-shaped blocks (71) inside the cold-drawn groove (8) are combined to form a ring, and the size of the ring is the diameter of the steel pipe after cold drawing.

3. The high-efficiency cold drawing machine for seamless steel pipe production according to claim 1, characterized in that: The adjusting part comprises a handle (76) rotatably arranged on the upper part of the cavity (72); the lower end of the handle (76) is located in the movable seat (7) and is vertically connected to a screw rod (77); a threaded sleeve (78) is arranged on the outside of the screw rod (77) through a threaded sleeve; a driving rack (79) is arranged on one side of the threaded sleeve (78); and the driving rack (79) is meshed with each ring gear (73) in the movable seat (7).

4. The high-efficiency cold drawing machine for seamless steel pipe production according to claim 1, characterized in that: The adjusting mechanism (9) comprises protrusions (91) respectively arranged on both sides of the movable seat (7) and limiting grooves (92) on both sides of the concave frame (6); the protrusions (91) pass through the limiting grooves (92) and are longitudinally slidably connected to the concave frame (6); a rack plate (93) is arranged on one side of one of the protrusions (91); a stepping motor (94) is installed on the upper side of one side of the concave frame (6) near the limiting groove (92); the output shaft of the stepping motor (94) is connected to a driving gear (95), and the driving gear (95) is meshed with the rack plate (93).

5. The high-efficiency cold drawing machine for seamless steel pipe production according to claim 1, characterized in that: The high-efficiency cold-drawing machine for producing seamless steel pipes also includes a cooling mechanism (10) for cooling the cold-drawn steel pipes. The cooling mechanism (10) consists of a driving part (11) and an execution part (12). The driving part (11) drives the execution part (12) to operate through a ball screw (5), thereby realizing the cooling operation of the steel pipes.

6. The high-efficiency cold drawing machine for seamless steel pipe production according to claim 5, characterized in that: The driving part (11) comprises a limiting seat (111) arranged at the edge of the other side of the concave frame (6) and a driven wheel (113) fixedly arranged outside the ball screw (5); a driving wheel (112) is rotatably arranged on one side of the limiting seat (111); the driving wheel (112) and the driven wheel (113) are connected to each other by a belt (114).

7. The high-efficiency cold drawing machine for seamless steel pipe production according to claim 5, characterized in that: A through slot (101) is provided on the upper portion of the base (1), and the belt (114) passes through the through slot (101).

8. The high-efficiency cold drawing machine for seamless steel pipe production according to claim 5, characterized in that: The actuator (12) comprises an annular cavity (121) and a limiting shaft (122) rotatably arranged on the other side of the limiting seat (111), the limiting shaft (122) being connected to the driving wheel (112), the annular cavity (121) corresponding to the position of the three-disc claw (3), and one end of the limiting shaft (122) being connected to a gear column (123), an annular tooth block being arranged outside the annular cavity (121), the annular tooth block being meshed with the gear column (123), and the annular cavity (121) ) is provided with a nozzle (124) on the inner side, an annular opening groove is provided at the end surface of the annular cavity (121), an annular plate (125) is provided in the annular opening groove for sealing and rotation, one side of the annular plate (125) is connected to a limit tube (126) which is in communication with the inside of the annular cavity (121), one side of the limit tube (126) is connected to a delivery tube (127), water is injected into the delivery tube (127) into the inside of the annular cavity (121), and then sprayed out from the nozzle (124).

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