A self-insertion mechanism of a cold rolling mill for seamless steel pipe production

Abstract

The present application relates to the technical fields of cold rolling mill self-insertion mechanism, and particularly relates to a cold rolling mill self-insertion mechanism for seamless steel pipe production, which comprises an outer box, two groups of linear moving parts arranged between the two sides of the outer box, and a gap hole for the movement of the seamless steel pipe at the two ends of the outer box, a cold rolling device arranged on one side of the outer box, a first pushing assembly and a second pushing assembly arranged through the linear moving parts, a cleaning assembly arranged on the inner side of the outer box and between the first pushing assembly and the second pushing assembly. The self-insertion function is realized by the first pushing assembly, the cleaning assembly and the second pushing assembly, the efficiency of the conveying is effectively improved under the condition that the axial movement of the seamless steel pipe is not deviated, the efficiency of the cold rolling processing of the seamless steel pipe is improved, the automatic cleaning and preliminary lubrication are realized during the conveying of the seamless steel pipe, and the possibility of damage to the outer surface of the roll and the seamless steel pipe is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of self-insertion mechanism of cold rolling mill, and particularly relates to a self-insertion mechanism of cold rolling mill for seamless pipe production. BACKGROUND

[0002] In order to improve the precision and performance of seamless pipes, cold rolling processing is carried out in the production and processing process of seamless pipes. The cold rolling process uses high-strength rolling at room temperature to make the wall thickness of the steel pipe more uniform and the surface smoother, while refining the grain structure and improving the strength and toughness of the material. In addition, cold rolling can accurately control the size of the finished product, meet the high-precision industrial demand and reduce the subsequent processing allowance, thereby reducing the cost. In the process of cold rolling, the seamless pipe needs to be inserted into the cold rolling mill for use, so a self-insertion mechanism is needed.

[0003] A seamless pipe cold rolling mill is disclosed in Chinese Patent No. CN222402781U, which comprises a mounting plate, a sliding groove is formed in the mounting plate, a sliding block is slidingly installed in the sliding groove, a cleaning brush is fixedly installed on the top side of the sliding block, a rack is fixed to one side of the mounting plate, an L-shaped plate is installed on one side of the cleaning brush, a servo motor is installed inside the L-shaped plate, and a pinion is installed on the output end of the servo motor. The servo motor is operated to drive the pinion to rotate. The rotation of the pinion is converted into linear motion along the rack. The linear motion of the pinion drives the cleaning brush to stably slide along the sliding groove through the L-shaped plate.

[0004] The above device realizes self-insertion and conveying of the seamless pipe through the arrangement of the conveying roller and the auxiliary roller, but in the cold rolling process of the seamless pipe, metal debris and other impurities are easily adhered to the surface of the seamless pipe during conveying in the external environment before processing. These impurities can cause damage to the rolling mill and reduce the finish of the finished product during cold rolling. The existing self-insertion mechanism cannot effectively treat these impurities before cold rolling, resulting in a low pass rate of the finished product of the seamless pipe cold rolling process. SUMMARY

[0005] The present application aims to solve the problem that some self-insertion mechanisms in the prior art cannot effectively treat the impurities on the surface of the steel pipe, resulting in a low pass rate of the finished product of the seamless pipe cold rolling process, and proposes a self-insertion mechanism of cold rolling mill for seamless pipe production.

[0006] In order to achieve the above object, the present application adopts the following technical scheme: A cold rolling mill self-insertion mechanism for seamless steel pipe production, comprising an outer box and two groups of linear moving parts arranged between the two sides of the outer box, the both ends of the outer box are provided with a let hole for the movement of the seamless steel pipe, the outer box is provided with a cold rolling device on one side, the linear moving part is provided with a first pushing assembly and a second pushing assembly, the first pushing assembly and the second pushing assembly are members made of the same structure, the outer box is provided with a cleaning assembly on the inner side, the cleaning assembly is arranged between the first pushing assembly and the second pushing assembly, and the seamless steel pipe is arranged through the first pushing assembly, the cleaning assembly and the second pushing assembly.

[0007] The cleaning assembly comprises a fixed shell arranged on the inner side of the outer box and a liquid outlet pipe fixedly connected to the upper end of the fixed shell, one side of the fixed shell is provided as a detachable side plate, the both sides of the fixed shell are provided with a let hole for the movement of the seamless steel pipe, the upper end of the liquid outlet pipe is connected with an external lubricating liquid conveying device, the inner bottom of the fixed shell is provided with a collecting part, the collecting part and the lower end of the fixed shell are provided with a liquid outlet part, the lower end of the liquid outlet part is connected with an external lubricating liquid recovery device, the inner wall of the upper end of the fixed shell is provided with a brushing part, the brushing part extends into the inner part of the collecting part, one end of the liquid outlet pipe extends into the inner side of the brushing part, and the seamless steel pipe is arranged through the fixed shell and the brushing part.

[0008] Preferably, the first pushing assembly comprises a mounting shell arranged through the linear moving part and a clamping part arranged in the inner part of the mounting shell, the both ends of the mounting shell are provided with a let hole for the movement of the seamless steel pipe, the mounting shell is provided with a rotating part on one side, and the rotating part is arranged on one end of the clamping part.

[0009] Preferably, the clamping part comprises a limiting block fixedly connected in the inner part of the mounting shell, two groups of limiting blocks are symmetrically arranged on the upper and lower ends in the inner part of the mounting shell, a rotating ring is rotatably connected to the inner side of the two groups of limiting blocks, an electric telescopic rod is fixedly connected to the inner side of the rotating ring, an arc-shaped clamping plate is fixedly connected to one end of the electric telescopic rod, the electric telescopic rod and the arc-shaped clamping plate are annularly arranged with four groups, a pushing ring is fixedly connected to the side of the mounting shell close to the fixed shell, the seamless steel pipe passes through the inner side of the pushing ring, a plurality of groups of rolling balls are annularly arranged on the side of the pushing ring close to the fixed shell.

[0010] Preferably, the rotating part comprises a first motor fixedly connected to one side of the mounting shell and a first tooth ring fixedly connected to one end of the rotating ring, the output end of the first motor penetrates the mounting shell and is fixedly connected with a first gear, and the first gear is meshingly connected with the first tooth ring.

[0011] Preferably, the collecting component comprises a collecting shell fixedly arranged inside a fixed shell, a liquid outlet portion is detachably arranged through the lower end of the collecting shell and the fixed shell, the inner walls on both sides of the collecting shell are slidingly connected with filter plates through sliding blocks, the filter plates are arranged obliquely, a transmission bar is fixedly connected through the middle of the filter plates, a blocking bar is fixedly connected on one side of the filter plates and the transmission bar, a space is arranged between the blocking bar and the inner wall of the fixed shell in the length direction of the transmission bar, and the edge of the filter plate is in contact with the inner wall of the fixed shell.

[0012] Preferably, a miniature liquid level meter is fixedly arranged at an angle inside the collecting shell, the miniature liquid level meter is arranged below the higher end of the blocking bar, a second motor is fixedly connected on one side of the collecting shell, a second gear is fixedly connected to the output end of the second motor and arranged in the space between the blocking bar and the collecting shell.

[0013] Preferably, one end of the second gear is fixedly connected with a transmission shaft through a connecting rod, and the cross section of the transmission shaft is elliptical, and the outer surface of the transmission shaft is in contact with the lower surface of the transmission bar.

[0014] Preferably, the brushing component comprises a limiting ring fixedly connected to the inner wall of the upper end of the fixed shell and a transmission ring rotationally connected to the inner side of the limiting ring, one end of the liquid outlet pipe extends into the inner side of the transmission ring, a fixed ring is fixedly arranged on the inner side of the limiting ring and rotationally fitted with the outer surface of the transmission ring, and the inner diameter of the pushing ring is the same as that of the transmission ring.

[0015] Preferably, a anti-slip sliding block is slidingly connected to the inner side of the transmission ring, a arc-shaped strip brush is fixedly connected to the inner side of the anti-slip sliding block, a magnetic block is arranged inside the arc-shaped strip brush, and the anti-slip sliding block and the arc-shaped strip brush are arranged in a circular array with three groups, the inner sides of the three groups of arc-shaped strip brushes are in contact with the seamless steel pipe, six groups of spring buckles are arranged at intervals in the transmission ring, the six groups of spring buckles are arranged at intervals on both sides of the three groups of anti-slip sliding blocks, respectively, two groups of spring buckles are clamped and connected with the outer sides of the arc-shaped strip brushes, respectively, the contact surface between the spring buckles and the arc-shaped strip brushes is arc-shaped, a second tooth ring is fixedly connected by embedding into the outer surface of the arc-shaped transmission ring, and the second tooth ring is meshingly connected with the second gear.

[0016] Preferably, the brushing component further comprises a annular pipe fixedly connected to the inner wall on one side of the collecting shell, and the annular pipe is rotationally arranged in the inner side of the transmission ring, a fixed ring is fixedly connected to the outer surface of the annular pipe and rotationally fitted with the inner wall of the transmission ring, an air inlet pipe is fixedly connected to one end of the annular pipe, and the air inlet pipe is connected with an external air pump at one end, an air outlet pipe is fixedly connected through the inner side of the annular pipe, and a plurality of groups of air outlet pipes are arranged in a circular array, and the ends of the plurality of groups of air outlet pipes close to the center of the annular pipe are all inclined towards the direction of the arc-shaped strip brush.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The present application realizes the self-insertion function by the arrangement of the first pushing assembly and the second pushing assembly, so that the seamless steel pipe can rotate slowly in the conveying process, thereby the rolling force during the cold rolling of the seamless steel pipe can be uniformly distributed on the outer surface of the seamless steel pipe, the uniformity of the wall thickness of the seamless steel pipe is improved, thereby the yield of the cold rolling processing of the seamless steel pipe is improved, the conveying efficiency is effectively improved without waiting for the first pushing assembly to reset before conveying under the condition that the axial movement of the seamless steel pipe is not deviated, thereby the efficiency of the cold rolling processing of the seamless steel pipe is improved;

[0019] The present application realizes the automatic cleaning function of the seamless steel pipe in the conveying process by the arrangement of the liquid outlet pipe, the brushing component and the collecting component, can effectively remove the dirt adhered to the outer surface of the seamless steel pipe, and can realize the preliminary lubrication of the seamless steel pipe, effectively reducing the possibility of damage of the rolling mill and the outer surface of the seamless steel pipe in the cold rolling process, can realize the filtration and collection of the lubricating liquid, and can lubricate the second gear while filtering and collecting, which is beneficial to the long-term use of the second gear and the second gear ring, and the efficiency of the lubricating liquid filtration can be improved while brushing the seamless steel pipe through the arrangement of the transmission shaft.

[0020] The present application realizes the automatic reset of the arc-shaped strip brush through the pushing of the pushing ring during the reciprocating movement of the first pushing assembly, avoids the falling of the arc-shaped strip brush during use, and the replacement operation of the arc-shaped strip brush is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application proposes a whole structure schematic diagram of a self-insertion mechanism of a cold rolling mill for seamless steel pipe production;

[0022] Figure 2 The present application proposes a first pushing assembly structure split schematic diagram of a self-insertion mechanism of a cold rolling mill for seamless steel pipe production;

[0023] Figure 3 The present application Figure 2 The enlarged detail view of A in the present application;

[0024] Figure 4 The present application proposes a cleaning assembly structure schematic diagram of a self-insertion mechanism of a cold rolling mill for seamless steel pipe production;

[0025] Figure 5 The present application proposes an internal structure schematic diagram of a fixed shell of a self-insertion mechanism of a cold rolling mill for seamless steel pipe production;

[0026] Figure 6 The present application proposes a collecting component structure schematic diagram of a self-insertion mechanism of a cold rolling mill for seamless steel pipe production;

[0027] Figure 7 A split schematic view of the collecting component structure of the self-insertion mechanism of the cold rolling mill for the production of seamless steel pipes according to the present application;

[0028] Figure 8 A schematic view of the filter plate, transmission bar and transmission shaft structure of the self-insertion mechanism of the cold rolling mill for the production of seamless steel pipes according to the present application;

[0029] Figure 9 A split schematic view of the brushing component structure of the self-insertion mechanism of the cold rolling mill for the production of seamless steel pipes according to the present application;

[0030] Figure 10 A split view of the brushing component structure of the self-insertion mechanism of the cold rolling mill for the production of seamless steel pipes according to the present application.

[0031] In the figure: 1, outer box; 2, straight line moving part; 3, first pushing assembly; 31, mounting shell; 32, clamping component; 321, limiting block; 322, rotating ring; 323, electric telescopic rod; 324, arc-shaped clamping plate; 33, rotating component; 331, first motor; 332, first gear; 333, first tooth ring; 4, cleaning assembly; 41, fixed shell; 42, liquid outlet pipe; 43, brushing component; 431, limiting ring; 432, transmission ring; 433, anti-slip block; 434, arc-shaped strip brush; 435, spring buckle; 436, annular pipe; 437, air outlet pipe; 438, air inlet pipe; 439, second tooth ring; 44, collecting component; 441, collecting shell; 442, filter plate; 443, blocking bar; 444, transmission bar; 445, micro liquid level meter; 446, second motor; 447, second gear; 448, transmission shaft; 45, liquid outlet part; 5, cold rolling equipment; 6, second pushing assembly; 7, pushing ring; 8, ball bearing. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0033] As Figures 1-10As shown, a seamless steel tube production cold rolling machine self-insertion mechanism, including the outer box 1 and interval through the two groups of linear moving parts 2 set between the two sides of the outer box 1, the outer box 1 both ends are provided with a let hole for the seamless steel pipe movement, the outer box 1 side is provided with a cold rolling equipment 5, the linear moving part 2 is provided with a first push assembly 3 and a second push assembly 6, and the first push assembly 3 and the second push assembly 6 are the same structure made of components, the inner side of the outer box 1 is provided with a cleaning assembly 4, and the cleaning assembly 4 is arranged between the first push assembly 3 and the second push assembly 6, the seamless steel pipe is through the first push assembly 3, the cleaning assembly 4 and the second push assembly 6, the first push assembly 3 and the second push assembly 6 are used for inserting the seamless steel pipe into the cold rolling equipment 5 and adjusting the angle of the seamless steel pipe, the cleaning assembly 4 is used for cleaning the outer surface of the seamless steel pipe, it should be noted that the horizontal movement of the first push assembly 3 and the second push assembly 6 is realized by the two groups of linear moving parts 2 respectively, which is a known prior art, and those skilled in the art can think of the specific structure;

[0034] The cleaning assembly 4 includes a fixed housing 41 fixedly arranged on the inner side of the outer box 1 and a liquid outlet pipe 42 through fixedly connected to the upper end of the fixed housing 41, one side of the fixed housing 41 is provided as a detachable side plate, both sides of the fixed housing 41 are provided with a let hole for the movement of the seamless steel pipe, the upper end of the liquid outlet pipe 42 is connected with the external lubricating liquid conveying equipment, the inner lower end of the fixed housing 41 is provided with a collecting part 44, the collecting part 44 and the lower end of the fixed housing 41 are through the liquid outlet part 45, the lower end of the liquid outlet part 45 is connected with the external lubricating liquid recovery equipment, the inner wall of the upper end of the fixed housing 41 is provided with a brushing part 43, and the brushing part 43 extends into the inner part of the collecting part 44, one end of the liquid outlet pipe 42 extends into the inner side of the brushing part 43, the seamless steel pipe is through the fixed housing 41 and the brushing part 43, the external water can be sprayed onto the seamless steel pipe in the inner side of the brushing part 43 through the liquid outlet pipe 42, and the collecting part 44 is used for collecting and filtering the lubricating liquid.

[0035] The first push assembly 3 includes an installation housing 31 through the linear moving part 2 and a clamping part 32 arranged in the installation housing 31, both ends of the installation housing 31 are provided with a let hole for the movement of the seamless steel pipe, one side of the installation housing 31 is provided with a rotating part 33, and the rotating part 33 is arranged at one end of the clamping part 32, the clamping part 32 is used for clamping and fixing the seamless steel pipe, and the rotating part 33 is used for driving the clamping part 32 to rotate so as to adjust the angle of the seamless steel pipe.

[0036] The clamping component 32 comprises a limiting block 321 fixedly connected inside the mounting shell 31, and the limiting block 321 is symmetrically provided with two groups of limiting blocks 321 at the upper and lower ends inside the mounting shell 31, the inner side of the two groups of limiting blocks 321 is clamped and rotationally connected with a rotating ring 322, the inner side of the rotating ring 322 is fixedly connected with an electric telescopic rod 323, one end of the electric telescopic rod 323 is fixedly connected with an arc-shaped clamping plate 324, and the electric telescopic rod 323 and the arc-shaped clamping plate 324 are both annularly arranged with four groups, the side of the mounting shell 31 close to the fixed shell 41 is fixedly connected with a pushing ring 7, the seamless steel pipe passes through the inner side of the pushing ring 7, the side of the pushing ring 7 close to the fixed shell 41 is rollingly connected with a plurality of groups of rolling balls 8 arranged in an annular array, and the mounting shell 31 can drive the pushing ring 7 and the rolling balls 8 to move together when moving, and the four groups of electric telescopic rods 323 are used for adjusting the size of the gap in the middle of the four groups of arc-shaped clamping plates 324, so that the self-insertion mechanism can adapt to the use of seamless steel pipes with different diameters, the seamless steel pipe can be clamped and fixed through the clamping of the four groups of arc-shaped clamping plates 324, and the vertical movement and horizontal movement of the rotating ring 322 can be limited through the two groups of limiting blocks 321, so that the position of the rotating ring 322 can be prevented from deviating when rotating.

[0037] The rotating component 33 comprises a first motor 331 fixedly connected to one side of the mounting shell 31 and a first tooth ring 333 fixedly connected to one end of the rotating ring 322, the output end of the first motor 331 penetrates the mounting shell 31 and is fixedly connected with a first gear 332, and the first gear 332 is meshingly connected with the first tooth ring 333, and the first motor 331 is used to drive the first gear 332 to drive the first tooth ring 333 to rotate, so as to realize the adjustment of the angle of the rotating ring 322.

[0038] The collecting component 44 comprises a collecting shell 441 fixedly arranged inside the fixed shell 41, and the liquid outlet 45 is detachably arranged to penetrate the collecting shell 441 and the lower end of the fixed shell 41, the inner walls of the two sides of the collecting shell 441 are slidingly connected with filter plates 442 through sliding blocks, and the filter plates 442 are arranged obliquely, the middle of the filter plate 442 penetrates and is fixedly connected with a transmission bar 444, and the filter plate 442 and the transmission bar 444 are fixedly connected with a blocking bar 443 on one side, and a space is arranged between the blocking bar 443 and the inner wall of the fixed shell 41 in the length direction of the transmission bar 444, the edge of the filter plate 442 is in contact with the inner wall of the fixed shell 41, and the filter plate 442 is used for filtering the lubricating liquid entering the inside of the collecting shell 441, and the collecting shell 441 is used for collecting the lubricating liquid, and the liquid outlet 45 comprises a pipeline and an electric valve, and it should be noted that the discharge of the lubricating liquid in the inside of the collecting shell 441 is controlled through the liquid outlet 45, which is a known prior art, and those skilled in the art can think of the specific structure.

[0039] The inside corner of the collecting shell 441 is fixedly provided with a micro liquid level meter 445, the micro liquid level meter 445 is arranged below the higher end of the blocking strip 443, one side of the collecting shell 441 is fixedly connected with a second motor 446, the output end of the second motor 446 penetrates through the collecting shell 441 and is fixedly connected with a second gear 447, and the second gear 447 is arranged in the interval between the blocking strip 443 and the collecting shell 441, and the micro liquid level meter 445 is used for detecting the liquid level of the lubricating liquid in the collecting shell 441.

[0040] One end of the second gear 447 is fixedly connected with a transmission shaft 448 through a connecting rod, and the cross section of the transmission shaft 448 is oval, the outer surface of the transmission shaft 448 is in contact with the lower surface of the transmission strip 444, the second motor 446 is used for driving the second gear 447 and the transmission shaft 448 to rotate, when the transmission shaft 448 rotates, the transmission strip 444 can vibrate periodically, so that the filter plate 442 can also vibrate, which can promote the filtration of the lubricating liquid above the filter plate 442, and the transmission strip 444 is used for reducing the impact on the filter plate 442.

[0041] The brushing part 43 comprises a limiting ring 431 fixedly connected to the inner wall of the upper end of the fixed shell 41 and a transmission ring 432 rotatably connected to the inner side of the limiting ring 431, one end of the liquid outlet pipe 42 extends into the inner side of the transmission ring 432, the inner side of the limiting ring 431 is fixedly provided with a fixed ring rotatably embedded with the outer surface of the transmission ring 432, the pushing ring 7 has the same inner diameter as the transmission ring 432, and the limiting ring 431 can limit the vertical and horizontal movement of the transmission ring 432, so as to avoid the deviation of the transmission ring 432.

[0042] The transmission ring 432 is slidably connected with an anti-slip block 433, the inner side of the anti-slip block 433 is fixedly connected with an arc-shaped strip brush 434, the arc-shaped strip brush 434 is internally provided with a magnetic block, and the anti-slip block 433 and the arc-shaped strip brush 434 are both annularly arranged with three groups, the inner sides of the three groups of arc-shaped strip brushes 434 are in contact with the seamless steel pipe, six groups of spring buckles 435 are arranged in the transmission ring 432, and the six groups of spring buckles 435 are respectively arranged on both sides of the three groups of anti-slip blocks 433, two groups of spring buckles 435 are respectively connected with the outer sides of the arc-shaped strip brushes 434, the contact surface between the spring buckle 435 and the arc-shaped strip brush 434 is arc-shaped, the outer surface of the transmission ring 432 is embeddedly fixedly connected with a second tooth ring 439, and the second tooth ring 439 is in meshing connection with the second gear 447, the arc-shaped strip brush 434 is in sliding connection with the inner side of the transmission ring 432 through the anti-slip block 433, the anti-slip block 433 is used for limiting the radial movement of the arc-shaped strip brush 434, the arc-shaped strip brush 434 is clamped and limited by the two groups of spring buckles 435, and when the second gear 447 rotates, the transmission ring 432 can be driven to rotate through the second tooth ring 439, so that the three groups of anti-slip blocks 433 and arc-shaped strip brushes 434 can rotate.

[0043] The brushing part 43 further comprises an annular pipe 436 fixedly connected to the inner wall of the collecting shell 441 on one side, and the annular pipe 436 is rotationally arranged in the inner side of the transmission ring 432, the outer surface of the annular pipe 436 is fixedly connected with a fixed ring rotationally fitted with the inner wall of the transmission ring 432, one end of the annular pipe 436 is fixedly connected with an air inlet pipe 438, one end of the air inlet pipe 438 is connected with an external air pump, the inner side of the annular pipe 436 is fixedly connected with an air outlet pipe 437, and the air outlet pipe 437 is arranged in an annular array with multiple groups, and the end of the multiple groups of air outlet pipes 437 close to the center of the annular pipe 436 is inclined to the direction of the arc-shaped strip brush 434. Clean gas can enter the inside of the annular pipe 436 through the air inlet pipe 438, and then the clean gas can be blown to the outer surface of the seamless steel pipe through the multiple groups of air outlet pipes 437.

[0044] In the present application, when the seamless steel pipe is cold-rolled, one end of the seamless steel pipe is cleaned, and then the seamless steel pipe is passed through a group of accommodation holes of the outer box 1, so that the seamless steel pipe is arranged through the accommodation holes on both sides of the four groups of arc-shaped clamping plates 324 and the center of the second pushing assembly 6 of the fixed shell 41. At this time, the clean end of the seamless steel pipe is arranged inside the second pushing assembly 6. Then, the position of the arc-shaped clamping plate 324 is adjusted according to the diameter of the seamless steel pipe. The seamless steel pipe can be clamped and fixed by the extrusion of the four groups of arc-shaped clamping plates 324, and the seamless steel pipe is limited by the second pushing assembly 6. Then, the first pushing assembly 3 is driven to move close to the fixed shell 41 by a group of linear moving parts 2, which can drive the seamless steel pipe to move axially, so that the seamless steel pipe can be inserted into the cold-rolling equipment 5 through another group of accommodation holes of the outer box 1 for cold-rolling processing, and the self-insertion function can be realized. In the process of cold-rolling, the first gear 332 is driven by the first motor 331 to rotate slowly, so that the rotating ring 322, the electric telescopic rod 323 and the arc-shaped clamping plate 324 all rotate slowly, so that the seamless steel pipe can rotate slowly. The rolling force of the seamless steel pipe during cold-rolling can be uniformly distributed on the outer surface of the seamless steel pipe, which improves the uniformity of the wall thickness of the seamless steel pipe, thereby improving the yield of the seamless steel pipe cold-rolling processing. With the continuous conveying of the seamless steel pipe, when the first pushing assembly 3 moves a distance, the pushing ring 7 is embedded in the inside of the fixed shell 41. The seamless steel pipe is clamped by the second pushing assembly 6. The second pushing assembly 6 is driven to move by another group of linear moving parts 2 to convey the seamless steel pipe. At this time, the seamless steel pipe is limited by the four groups of arc-shaped clamping plates 324, and the first pushing assembly 3 moves away from the fixed shell 41. The arc-shaped clamping plate 324 only contacts the seamless steel pipe, and the friction is small. Through the rotation of the first pushing assembly 3 and the second pushing assembly 6, the seamless steel pipe can be conveyed without waiting for the first pushing assembly 3 to reset, which can effectively improve the conveying efficiency without deviating from the axial movement of the seamless steel pipe, thereby improving the efficiency of the seamless steel pipe cold-rolling processing.

[0045] In the conveying process of the seamless steel pipe, the second gear ring 439 and the transmission shaft 448 are continuously rotated by the second motor 446, the lubricating liquid can be continuously conveyed to the outer surface of the seamless steel pipe inside the transmission ring 432 through the liquid outlet pipe 42, and the transmission ring 432 can continuously brush the inside of the three groups of arc-shaped strip brushes 434 on the outer surface of the seamless steel pipe when rotating, which can not only realize the cleaning of the outer surface of the seamless steel pipe, but also can coat the lubricating liquid on the outer surface of the seamless steel pipe in a ring shape. The lubricating liquid that drops will fall to the inside of the transmission ring 432, and due to the blocking of the lubricating liquid flow by the annular pipe 436, the lubricating liquid will flow into the inside of the collection shell 441 from the end of the transmission ring 432 close to the mounting shell 31. When the lubricating liquid passes through the filter plate 442, it will be filtered, and the filtered lubricating liquid will be stored in the inside of the collection shell 441. Until the miniature liquid level meter 445 detects that the liquid level of the lubricating liquid in the inside of the collection shell 441 is higher than the preset value, the excess lubricating liquid can be discharged through the liquid outlet part 45, so that the liquid level in the inside of the collection shell 441 is kept within the range of contact with the second gear 447. When the second gear 447 rotates, it can continuously contact with the filtered lubricating liquid, so as to lubricate the second gear 447 and the second gear ring 439. In this process, the continuous rotation of the transmission shaft 448 can drive the filter plate 442 to vibrate as well. Through the vibration of the filter plate 442, not only the filtration of the lubricating liquid can be promoted, but also the filter residue above the filter plate 442 can be accumulated to the lower part of the filter plate 442, reducing the possibility of blockage of the filter plate 442, thereby prolonging the cleaning interval of the filter plate 442. After the seamless steel pipe is brushed by the three groups of arc-shaped strip brushes 434, it will pass through the inside of the annular pipe 436. The clean gas blown by the plurality of air outlet pipes 437 can blow the excess lubricating liquid and impurities on the seamless steel pipe to the inside of the transmission ring 432. Since the outer surface of the seamless steel pipe has been cleaned, only a small amount of impurities attached during the conveying process will be washed away by the lubricating liquid. Due to the small amount of impurities cleaned in unit time, with the continuous flow of the lubricating liquid, the impurities and the lubricating liquid will enter the inside of the collection shell 441 for filtration. At this time, the steel pipe is driven to rotate by the first pushing assembly 3 or the second pushing assembly 6, which can improve the uniformity of the blowing of the plurality of air outlet pipes 437. A small amount of residual lubricating liquid can realize the preliminary lubrication of the seamless steel pipe, avoiding the situation that the lubricating liquid has not contacted with the seamless steel pipe when the seamless steel pipe enters the cold rolling equipment 5 for the first time, resulting in hard pressure without lubrication. Through the setting of the liquid outlet pipe 42, the brushing part 43 and the collection part 44, the automatic cleaning function in the conveying process of the seamless steel pipe is realized, which can effectively remove the impurities adhered to the outer surface of the seamless steel pipe, and at the same time, the preliminary lubrication of the seamless steel pipe can be realized, effectively reducing the possibility of damage to the outer surface of the rolling mill and the seamless steel pipe in the cold rolling process. The filtration and collection of the lubricating liquid can be realized, and at the same time of filtration and collection, the second gear 447 can be lubricated, which is conducive to the long-term use of the second gear 447 and the second gear ring 439. Through the setting of the transmission shaft 448, the efficiency of the lubricating liquid filtration can be improved while brushing the seamless steel pipe.

[0046] When the anti-slip block 433 needs to be replaced, the spring buckle 435 is pressed into the inside of the transmission ring 432 by applying an external force to pull the arc-shaped strip brush 434, so that the arc-shaped strip brush 434 can be pulled out of the inside of the transmission ring 432, and then the new anti-slip block 433 is connected with the inside of the transmission ring 432, so that the outside of the arc-shaped strip brush 434 is connected with the spring buckle 435, and the replacement of the arc-shaped strip brush 434 is completed. The operation is simple and convenient to use. In the process of rotating the arc-shaped strip brush 434 to brush the outer surface of the seamless steel pipe, the transmission ring 432 rotates quickly, and under the centrifugal force, the arc-shaped strip brush 434 is in close contact with the transmission ring 432, thereby improving the stability of the arc-shaped strip brush 434 and the spring buckle 435, and reducing the possibility of the arc-shaped strip brush 434 deviating. When the first pushing assembly 3 is used to convey the seamless steel pipe, the installation shell 31 will approach the fixed shell 41 intermittently, so that the pushing ring 7 will be intermittently embedded in the inside of the transmission ring 432 and push the three groups of arc-shaped strip brushes 434. If the arc-shaped strip brush 434 deviates during use, the three groups of arc-shaped strip brushes 434 can be reset by the pushing ring 7, so that the arc-shaped strip brush 434 and the anti-slip block 433 can always be located inside the transmission ring 432, avoiding the situation that the arc-shaped strip brush 434 falls off due to long-term accumulation of slight displacement. Since the transmission ring 432 continuously rotates, the friction between the pushing ring 7 and the arc-shaped strip brush 434 can be reduced by the ball 8. Through the setting of the first pushing assembly 3, the pushing ring 7, the ball 8 and the brushing part 43, the arc-shaped strip brush 434 is automatically reset by the pushing of the pushing ring 7 during the reciprocating movement of the first pushing assembly 3, avoiding the arc-shaped strip brush 434 from falling off during use. The replacement operation of the arc-shaped strip brush 434 is simple and convenient to use.

[0047] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A self-insertion mechanism for a cold rolling mill used in the production of seamless steel pipes, comprising an outer casing (1) and two sets of linear moving parts (2) spaced apart and arranged between the two sides of the outer casing (1), wherein both ends of the outer casing (1) are provided with clearance holes for the movement of seamless steel pipes, and a cold rolling device (5) is provided on one side of the outer casing (1), characterized in that, The linear moving part (2) is provided with a first pushing component (3) and a second pushing component (6) through it, and the first pushing component (3) and the second pushing component (6) are components made of the same structure. A cleaning component (4) is provided inside the outer box (1), and the cleaning component (4) is spaced between the first pushing component (3) and the second pushing component (6). The seamless steel pipe is provided through the first pushing component (3), the cleaning component (4) and the second pushing component (6). The cleaning component (4) includes a fixed housing (41) fixedly installed inside the outer casing (1) and an outlet pipe (42) that is fixedly connected to the upper end of the fixed housing (41). One side of the fixed housing (41) is provided with a detachable side plate. Both sides of the fixed housing (41) are provided with clearance holes for the movement of seamless steel pipes. The upper end of the outlet pipe (42) is connected to an external lubricating fluid conveying device. A collection component (44) is provided at the lower end of the interior of the fixed housing (41). An outlet part (45) is provided through the collection component (44) and the lower end of the fixed housing (41). The lower end of the outlet part (45) is connected to an external lubricating fluid recovery device. A scrubbing component (43) is provided on the inner wall of the upper end of the fixed housing (41). The scrubbing component (43) extends into the interior of the collection component (44). One end of the outlet pipe (42) extends into the interior of the scrubbing component (43). The seamless steel pipe is provided through the fixed housing (41) and the scrubbing component (43). The collecting component (44) includes a collecting housing (441) fixedly installed inside the fixed housing (41), and a liquid outlet (45) detachably installed through the lower end of the collecting housing (441) and the fixed housing (41). The inner walls on both sides of the collecting housing (441) are connected to a filter plate (442) by a slider, and the filter plate (442) is inclined. A transmission bar (444) is fixedly connected through the middle of the filter plate (442), and a blocking bar (443) is fixedly connected to one side of the filter plate (442) and the transmission bar (444). A miniature liquid level gauge (445) is fixedly installed in one corner inside the collection housing (441).

2. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 1, characterized in that, The first pushing component (3) includes a mounting housing (31) that passes through the linear moving part (2) and a clamping component (32) that is disposed inside the mounting housing (31). Both ends of the mounting housing (31) are provided with clearance holes for the movement of seamless steel pipes. A rotating component (33) is provided through one side of the mounting housing (31), and the rotating component (33) is disposed at one end of the clamping component (32).

3. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 2, characterized in that, The clamping component (32) includes a limiting block (321) fixedly connected inside the mounting housing (31), and two sets of limiting blocks (321) are symmetrically arranged at the upper and lower ends inside the mounting housing (31). The inner sides of the two sets of limiting blocks (321) are engaged and rotatably connected to a rotating ring (322). An electric telescopic rod (323) is fixedly connected to the inner side of the rotating ring (322). An arc-shaped clamp (324) is fixedly connected to one end of the electric telescopic rod (323). The electric telescopic rod (323) and the arc-shaped clamp (324) are arranged in a circular array of four sets. A push ring (7) is fixedly connected to the side of the mounting housing (31) near the fixed housing (41). A seamless steel pipe passes through the inner side of the push ring (7). A ball bearing (8) is rolled on the side of the push ring (7) near the fixed housing (41). Multiple sets of the ball bearing (8) are arranged in a circular array.

4. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 3, characterized in that, The rotating component (33) includes a first motor (331) fixedly connected to one side of the mounting housing (31) and a first gear ring (333) fixedly connected to one end of the rotating ring (322). The output end of the first motor (331) passes through the mounting housing (31) and is fixedly connected to a first gear (332), and the first gear (332) meshes with the first gear ring (333).

5. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 1, characterized in that, Along the length of the transmission bar (444), there is a gap between the blocking bar (443) and the inner wall of the fixed housing (41), and the edge of the filter plate (442) contacts the inner wall of the fixed housing (41).

6. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 1, characterized in that, The miniature level gauge (445) is located below the higher end of the blocking bar (443). A second motor (446) is fixedly connected to one side of the collection housing (441). The output end of the second motor (446) passes through the collection housing (441) and is fixedly connected to a second gear (447). The second gear (447) is located in the gap between the blocking bar (443) and the collection housing (441).

7. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 6, characterized in that, The second gear (447) has a transmission shaft (448) fixedly connected to one end by a connecting rod, and the cross section of the transmission shaft (448) is elliptical, with the outer surface of the transmission shaft (448) in contact with the lower surface of the transmission bar (444).

8. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 1, characterized in that, The brushing component (43) includes a limiting ring (431) fixedly connected to the inner wall of the upper end of the fixed housing (41) and a transmission ring (432) rotatably connected to the inner side of the limiting ring (431). One end of the liquid outlet pipe (42) extends into the inner side of the transmission ring (432). A fixing ring is fixedly provided on the inner side of the limiting ring (431) and rotatably fitted with the outer surface of the transmission ring (432). The pushing ring (7) has the same inner diameter as the transmission ring (432).

9. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 8, characterized in that, The transmission ring (432) is slidably connected to an anti-detachment slider (433), and an arc-shaped brush (434) is fixedly connected to the inside of the anti-detachment slider (433). A magnetic block is installed inside the arc-shaped brush (434), and the anti-detachment slider (433) and the arc-shaped brush (434) are arranged in a circular array of three sets. The inner sides of all three sets of arc-shaped brushes (434) are in contact with the seamless steel pipe. Six sets of spring clips (435) are spaced apart inside the transmission ring (432). The six sets of spring buckles (435) are respectively spaced on both sides of the three sets of anti-detachment sliders (433). The two sets of spring buckles (435) are respectively engaged with the outer side of the arc-shaped strip brush (434). The contact surface between the spring buckle (435) and the arc-shaped strip brush (434) is arc-shaped. The outer surface of the transmission ring (432) is embedded and fixedly connected with a second toothed ring (439), and the second toothed ring (439) is meshed with the second gear (447).

10. The self-insertion mechanism for a cold rolling mill used in seamless steel pipe production according to claim 9, characterized in that, The brushing component (43) also includes an annular tube (436) fixedly connected to the inner wall of one side of the collection housing (441), and the annular tube (436) is rotatably disposed inside the transmission ring (432). A fixing ring is fixedly connected to the outer surface of the annular tube (436) and rotates and fits into the inner wall of the transmission ring (432). An air inlet pipe (438) is fixedly connected to one end of the annular tube (436), and one end of the air inlet pipe (438) is connected to an external air pump. An air outlet pipe (437) is fixedly connected through the inner side of the annular tube (436), and multiple sets of air outlet pipes (437) are arranged in annular array. The ends of the multiple sets of air outlet pipes (437) near the center of the annular tube (436) are all inclined towards the direction of the arc-shaped brush (434).

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