CN214601053U - Seamless steel pipe high accuracy centering preprocessing device - Google Patents

Abstract

The utility model discloses a seamless steel pipe high accuracy centering preprocessing device aims at solving that centering roller coupling mechanism's bush wearing and tearing are serious, change frequency is higher, leads to the firm ejector pin of holding tightly in perforating, leads to the problem that steel pipe processingquality reduces. The key points of the technical scheme are as follows: the utility model provides a seamless steel pipe high accuracy centering preprocessing device, includes the workstation and sets up the centering roller frame on the workstation, and the perforation ejector pin closely wears to be equipped with in the inside of centering roller frame, and two backup pads of symmetry fixedly connected with on the workstation, the symmetry is provided with the clamping device who is used for holding the perforation ejector pin tightly on the workstation. The utility model discloses a seamless steel pipe high accuracy centering preprocessing device avoids the perforation ejector pin to produce big beating in radial direction through clamping device for the perforation ejector pin can be held tightly by pressing from both sides tight piece at the during operation, thereby can prevent that the steel pipe from perforating and producing the deviation, guarantees the quality of steel pipe output.

Description

Seamless steel pipe high accuracy centering preprocessing device

Technical Field

The utility model relates to a steel pipe machining field, more specifically say, it relates to a seamless steel pipe high accuracy centering preprocessing device.

Background

Seamless steel pipes are steel pipes which are punched by a whole round steel and have no welding seams on the surface, and are called seamless steel pipes. The centering is a centering device in the perforation rolling production of the seamless steel pipe, and the requirement of correct centering of the ejector rod is the first technological requirement. The perforation process of seamless steel tube production is to perforate the solid tube blank or steel ingot with 1250 ℃ into the steel tube with the shape, size and performance required by the process through rotating a roller, a guide plate, a perforation top head, a mandril and other tools and dies.

Along with the customer to the improvement gradually of wall thickness precision, traditional 250 perforating units can not satisfy fenestrate condition far away, and centering roller coupling mechanism's bush wearing and tearing are serious, change frequency is higher, leads to can not be firm in the perforation hold the ejector pin tightly, and the ejector pin radial runout, shake are big in the perforation process, make the pierced billet wall thickness deviation after the perforation aggravate. After the finished product is cut, the problems of batch end low-point back cutting, intermediate low-point grid production and the like easily occur, so that the quality of the finished product produced by the steel pipe can be influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a seamless steel pipe high accuracy centering preprocessing device avoids the perforation ejector pin to produce big beating in radial direction through clamping device for the perforation ejector pin can be held tightly by the clamp block at the during operation, thereby can prevent that the steel pipe from perforating and producing the deviation, guarantees the quality of steel pipe output.

The above technical purpose of the present invention can be achieved by the following technical solutions: a high-precision centering pretreatment device for seamless steel pipes comprises a workbench and a centering roller frame arranged on the workbench, wherein a perforated mandril is tightly penetrated in the centering roller frame, two support plates are symmetrically and fixedly connected to the workbench, clamping devices for tightly holding the perforated mandril are symmetrically arranged on the workbench, each clamping device comprises a motor, a turntable connected with an output shaft of the motor, a first round pin fixedly connected to the turntable, a sliding rod slidably connected to the upper part of the turntable, a second round pin fixedly connected to the sliding rod and a clamping block fixedly connected to the sliding rod, a sliding rail for the sliding rod to slide is arranged on the support plate, a rotating rod is rotatably connected to the support plate, sliding grooves for the first round pin and the second round pin to slide are arranged in the rotating rod, the turntable is rotatably connected to the support plate, one end of the clamping block, which is used for clamping, is provided with a clamping groove.

By adopting the technical scheme, when the centering roller frame and the perforation mandril work, the perforation mandril penetrates through the inner part of the centering roller frame, the perforation mandril perforates the steel pipe, certain offset and bounce can be generated during the processing of the perforation mandril, at the moment, a worker needs to limit the perforation mandril, the perforation mandril is prevented from radially bouncing and greatly shaking in the working process to influence the processing quality of the steel pipe, the worker drives the clamping device to clamp the perforation mandril, the motor is driven to drive the rotary disc connected with the output shaft of the motor to start rotating on the supporting plate, the first round pin on the rotary disc can be driven to rotate along with the rotation of the rotary disc when the rotary disc rotates, meanwhile, the first round pin is tightly attached to the inner wall of the chute formed by the rotating disc, and the first round pin can be driven to slide in the chute when the rotary disc continuously rotates, and can drive the dwang and begin to rotate in the backup pad, and the second round pin on the slide bar slides in the spout under the dwang continuously rotates, make the slide bar slide in the slide rail that sets up in the backup pad, thereby can drive and press from both sides tight piece and be close to the direction of perforation ejector pin, make the perforation ejector pin press from both sides tightly and realize fixing in pressing from both sides the tight inslot of tight piece, the motor is reclosed this moment and make carousel stall, and the operation is thus simple, can realize that clamping device's linkage comes to drive and presss from both sides tight piece and slide along the direction of perforation ejector pin, guarantee that the perforation ejector pin is pressed from both sides tightly between two tight pieces at the during operation, prevent that the perforation ejector pin is runout radially in the steel pipe perforation process, the shake is big, make the perk pipe wall thickness deviation aggravation after the perforation, thereby can guarantee the quality of steel pipe output.

The utility model discloses further set up to: all rotate on the both sides wall of spout and be connected with a plurality of first ball, the surface and a plurality of first ball of first round pin and second round pin are laminated mutually.

Through adopting above-mentioned technical scheme, can drive a plurality of first balls on the wall of spout both sides when first round pin and second round pin slide along the inner wall of spout and begin to roll, the efficiency when rolling first ball can increase first round pin and second round pin and slide to efficiency when can increase the slide bar and slide and the dwang efficiency when rotating.

The utility model discloses further set up to: first stopper and second stopper of fixedly connected with respectively on first round pin and the second round pin, the diameter of first stopper and second stopper all is greater than the internal diameter of spout.

Through adopting above-mentioned technical scheme, when first round pin and second round pin slided along the inner wall of spout, first stopper and second stopper on first round pin and the second round pin can prevent that first round pin and second round pin from taking off with the spout when sliding in the spout to guarantee the stability when first round pin and second round pin slide.

The utility model discloses further set up to: one end of the sliding rod, which is far away from the clamping block, is fixedly connected with a locking block, and the diameter of the locking block is larger than the inner diameter of the sliding rail.

Through adopting above-mentioned technical scheme, when the slide bar slided in the slide rail, the locking piece on the slide bar can prevent that the slide bar from taking off with the slide rail when sliding, guarantees the gliding stability of slide bar in the slide rail to guarantee the stability of slide bar when driving the tight piece of clamp and being close to the perforation ejector pin.

The utility model discloses further set up to: and a plurality of anti-skid bulges are arranged on the inner wall of the clamping groove.

Through adopting above-mentioned technical scheme, can increase the frictional force between the tight piece of clamp and the perforation ejector pin with a plurality of anti-skidding archs of clamping groove contact when the perforation ejector pin is pressed from both sides tightly, guarantee the stability when perforation ejector pin is pressed from both sides tightly in clamping groove.

The utility model discloses further set up to: the inner wall of the clamping groove is rotatably connected with a plurality of second balls, and the second balls and the anti-skid protrusions are distributed at intervals.

Through adopting above-mentioned technical scheme, can drive a plurality of second balls when the perforation ejector pin radially produces the slip and begin to roll, and second ball and the protruding interval distribution of antiskid for the perforation ejector pin can not be pressed from both sides tightly too closely and influence the normal work of perforation ejector pin when pressing from both sides tightly.

The utility model discloses further set up to: and one end of each of the two clamping blocks, which is close to the other end of the clamping block, is provided with a first magnet and a second magnet respectively, and the first magnet and the second magnet are adsorbed to each other.

Through adopting above-mentioned technical scheme, close to simultaneously the laminating together when two clamp tight piece mutually, first magnet and second magnet on two clamp tight pieces can adsorb together, guarantee that the perforation ejector pin is pressed from both sides tightly between two clamp tight pieces, prevent that two clamp tight pieces from separating from the perforation ejector pin easily.

The utility model discloses further set up to: the centering roller frame comprises three centering rollers, and the perforated ejector rod is in close contact with the surfaces of the three centering rollers.

Through adopting above-mentioned technical scheme, three centering roller becomes equilateral triangle angle and embraces the perforation ejector pin tightly, can guarantee that the perforation ejector pin is further injectd and hugs tightly, avoids the perforation ejector pin to produce big beating in radial.

To sum up, the utility model discloses following beneficial effect has: the linkage of the clamping device drives the clamping blocks to slide along the direction of the perforating ejector rod, the perforating ejector rod is guaranteed to be clamped between the two clamping blocks during working, radial runout and large shaking of the perforating ejector rod in the steel pipe perforating process are prevented, wall thickness deviation of pierced billets after perforation is aggravated, and accordingly quality of steel pipe output can be guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of the worktable, the centering roller frame and the clamping device of the present invention.

In the figure: 1. a work table; 2. a centering roller frame; 3. punching a mandril; 4. a support plate; 5. a turntable; 6. rotating the rod; 7. a chute; 8. a slide bar; 9. a locking block; 10. a clamping block; 11. a first round pin; 12. a second round pin; 13. a first stopper; 14. and a second limiting block.

Detailed Description

In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "set/connected", "connected", and the like are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in detail with reference to the accompanying drawings and examples.

A high-precision centering pretreatment device for seamless steel pipes, refer to FIG. 1, comprising a workbench 1 and a centering roller frame 2 welded on the workbench 1, wherein the centering roller frame 2 comprises three centering rollers, a perforation mandril 3 tightly penetrates through the interior of the centering roller frame 2, two support plates 4 are symmetrically welded on the workbench 1, clamping devices for holding the perforation mandril 3 are symmetrically arranged on the workbench 1, each clamping device comprises a motor, a turntable 5 welded with an output shaft of the motor, a first round pin 11 welded on the turntable 5, a sliding rod 8 connected above the turntable 5 in a sliding manner, a second round pin 12 welded on the sliding rod 8 and a clamping block 10 welded on the sliding rod 8, a sliding rail for the sliding rod 8 to slide is arranged on the support plate 4, a rotating rod 6 is rotatably connected on the support plate 4, a sliding chute 7 for the first round pin 11 and the second round pin 12 to slide is arranged in the rotating rod 6, the rotary disc 5 is rotatably connected to the supporting plate 4, and one end of the clamping block 10 for clamping is provided with a clamping groove.

A plurality of first balls are rotatably connected to two side walls of the sliding groove 7, the surfaces of the first round pin 11 and the second round pin 12 are attached to the plurality of first balls, when the first round pin 11 and the second round pin 12 slide along the inner wall of the sliding groove 7, the plurality of first balls on the two side walls of the sliding groove 7 can be driven to roll, and the rolling first balls can increase the sliding efficiency of the first round pin 11 and the second round pin 12, so that the sliding efficiency of the sliding rod 8 and the rotating efficiency of the rotating rod 6 can be increased; and weld first stopper 13 and second stopper 14 on first round pin 11 and the second round pin 12 respectively, the diameter of first stopper 13 and second stopper 14 all is greater than the internal diameter of spout 7 simultaneously, and first stopper 13 and second stopper 14 can prevent that first round pin 11 and second round pin 12 from taking off with spout 7 when sliding in spout 7 to guarantee the stability when first round pin 11 and second round pin 12 slide.

A locking block 9 with the diameter larger than the inner diameter of the slide rail is welded at one end, far away from the clamping block 10, of the slide rod 8, when the slide rod 8 slides in the slide rail, the locking block 9 on the slide rod 8 can prevent the slide rod 8 from separating from the slide rail when sliding, so that the sliding stability of the slide rod 8 in the slide rail is ensured, and the stability of the slide rod 8 when driving the clamping block 10 to be close to the perforated ejector rod 3 is ensured; the inner wall of the clamping groove is provided with a plurality of anti-skidding protrusions in a protruding mode, the inner wall of the clamping groove is connected with a plurality of second balls in a rotating mode, the second balls and the anti-skidding protrusions are distributed at intervals, stability and friction force of the perforated ejector rod 3 when the perforated ejector rod 3 is clamped in the clamping groove can be increased, and the perforated ejector rod 3 is further prevented from shaking and shifting; and the one end that two clamp tight piece 10 are close to bonds respectively has first magnet and second magnet, and first magnet adsorbs each other with the second magnet, and when two clamp tight piece 10 were close to and laminate together simultaneously, first magnet and second magnet on two clamp tight piece 10 can adsorb together, guarantee that perforation ejector pin 3 presss from both sides tightly between two clamp tight piece 10, prevent that two clamp tight piece 10 from separating from perforation ejector pin 3 easily.

The working principle is as follows: when the centering roller frame 2 and the perforation mandril 3 work, the perforation mandril 3 penetrates through the centering roller frame 2, the perforation mandril 3 perforates a steel pipe, a certain amplitude of deviation and bounce can be generated when the perforation mandril 3 is processed, at the moment, a worker needs to limit the perforation mandril 3 to prevent the perforation mandril 3 from radially bouncing and greatly shaking in the working process to influence the processing quality of the steel pipe, the worker needs to drive the clamping device to clamp the perforation mandril 3, at the moment, the motor is driven to drive the rotary disc 5 connected with the output shaft of the motor to rotate on the supporting plate 4, the rotary disc 5 can drive the first round pin 11 on the rotary disc 5 to rotate along with the rotation of the rotary disc 5, meanwhile, the first round pin 11 and the second round pin 12 on the sliding rod 8 are tightly attached to the inner wall of the chute 7 arranged on the rotating rod 6, and the rotary disc 5 can drive the first round pin 11 to slide in the chute 7 under the continuous rotation, and can drive the rotating rod 6 to rotate on the supporting plate 4, and the second round pin 12 on the sliding rod 8 can slide in the sliding groove 7 under the continuous rotation of the rotating rod 6, so as to drive the sliding rod 8 to slide in the sliding rail arranged on the supporting plate 4, and then the slip of slide bar 8 can drive and press from both sides tight piece 10 and be close to the direction of perforation ejector pin 3, make perforation ejector pin 3 press from both sides tightly and realize fixedly in the tight inslot that presss from both sides tight piece 10, the motor is closed again this moment, 5 stall of carousel, the operation is simple, the linkage that can realize clamping device drives and presss from both sides tight piece 10 and slide along the direction of perforation ejector pin 3, guarantee that perforation ejector pin 3 can press from both sides tightly between two tight pieces 10 at the during operation, prevent perforation ejector pin 3 radial run-out among the steel pipe perforation process, the shake is big, make the pierced billet wall thickness deviation aggravation after the perforation, thereby can guarantee the quality of steel pipe output.

When the perforated ejector rod 3 is clamped, the perforated ejector rod 3 can be contacted with a plurality of anti-skidding protrusions of the clamping groove to increase the friction force between the clamping block 10 and the perforated ejector rod 3, the stability of the perforated ejector rod 3 when the perforated ejector rod 3 is clamped in the clamping groove is ensured, meanwhile, the perforated ejector rod 3 can drive a plurality of second balls to start rolling when sliding is generated in the radial direction, and the second balls and the anti-skidding protrusions are distributed at intervals, so that the perforated ejector rod 3 cannot be clamped too tightly to influence the normal work of the perforated ejector rod 3.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides a seamless steel pipe high accuracy centering preprocessing device, includes workstation (1) and centering roller frame (2) of setting on workstation (1), its characterized in that: the punching ejector rod (3) is tightly penetrated and arranged in the centering roller frame (2), the two support plates (4) are symmetrically and fixedly connected to the workbench (1), the clamping device for tightly holding the punching ejector rod (3) is symmetrically arranged on the workbench (1), the clamping device comprises a motor, a turntable (5) connected with an output shaft of the motor, a first round pin (11) fixedly connected to the turntable (5), a sliding rod (8) slidably connected to the upper part of the turntable (5), a second round pin (12) fixedly connected to the sliding rod (8) and a clamping block (10) fixedly connected to the sliding rod (8), a sliding rail for sliding the sliding rod (8) is arranged on the support plate (4), a rotating rod (6) is rotatably connected to the support plate (4), a sliding groove (7) for sliding the first round pin (11) and the second round pin (12) is arranged in the rotating rod (6), the rotary table (5) is rotatably connected to the supporting plate (4), and one end, used for clamping, of the clamping block (10) is provided with a clamping groove.

2. The high-precision centering pretreatment device for the seamless steel tube according to claim 1, characterized in that: all rotate on the both sides wall of spout (7) and be connected with a plurality of first ball, the surface and a plurality of first ball of first round pin (11) and second round pin (12) are laminated mutually.

3. The high-precision centering pretreatment device for the seamless steel tube according to claim 1, characterized in that: first stopper (13) and second stopper (14) of fixedly connected with respectively on first round pin (11) and second round pin (12), the diameter of first stopper (13) and second stopper (14) all is greater than the internal diameter of spout (7).

4. The high-precision centering pretreatment device for the seamless steel tube according to claim 1, characterized in that: one end of the sliding rod (8) far away from the clamping block (10) is fixedly connected with a locking block (9), and the diameter of the locking block (9) is larger than the inner diameter of the sliding rail.

5. The high-precision centering pretreatment device for the seamless steel tube according to claim 1, characterized in that: and a plurality of anti-skid bulges are arranged on the inner wall of the clamping groove.

6. The high-precision centering pretreatment device for the seamless steel tube according to claim 5, is characterized in that: the inner wall of the clamping groove is rotatably connected with a plurality of second balls, and the second balls and the anti-skid protrusions are distributed at intervals.

7. The high-precision centering pretreatment device for the seamless steel tube according to claim 1, characterized in that: one ends of the two clamping blocks (10) close to each other are respectively provided with a first magnet and a second magnet, and the first magnet and the second magnet are mutually adsorbed.

8. The high-precision centering pretreatment device for the seamless steel tube according to claim 1, characterized in that: the centering roller frame (2) comprises three centering rollers, and the perforation ejector rod (3) is in close contact with the surfaces of the three centering rollers.

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