A device for mechanically treating black skin on the surface of steel billets used to make seamless steel pipes

Abstract

The present invention relates to the technical field of steel pipe processing, and specifically to a mechanical processing device for black skin on the surface of a steel billet for making seamless steel pipes, comprising: a base, on which two groups of bidirectional drive assemblies are symmetrically arranged, and the two groups of the bidirectional drive assemblies are connected by a No. 2 belt; a plurality of support rollers are provided and connected to the bidirectional drive assemblies, and the bidirectional drive assemblies can adjust the spacing between the two support rollers on the same side; an elastic tensioning assembly connected to the bidirectional drive assembly, and an abrasive belt is sleeved on the elastic tensioning assembly; a follower assembly connected to the elastic tensioning assembly and the bidirectional drive assembly, and the follower assembly can, when the bidirectional drive assembly drives the two support rollers on the same side to move relative to each other, enable the elastic tensioning assembly to maintain a predetermined tensioning force on the abrasive belt, so that when removing the black skin on the surface of steel pipes with different diameters, the abrasive belt can maintain a relatively constant force on the steel pipe, thereby ensuring the black skin removal effect.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe processing, in particular to a device for mechanically processing black skin on the surface of a steel billet for making seamless steel pipes. Background Art

[0002] The production of seamless steel pipes includes the following steps: round steel → re-inspection → peeling → blanking → centering → heating → piercing → pickling → flattening → inspection and grinding → cold rolling (cold drawing) → degreasing → heat treatment → straightening → pipe cutting (to length) → pickling / passivation → finished product inspection (eddy current, ultrasonic, water pressure) → packaging and warehousing.

[0003] Among them, peeling is mainly to remove the rust (i.e. black skin) produced by oxidation on the surface of seamless steel pipes. The quality of the peeling process directly affects the subsequent processing of seamless steel pipes.

[0004] The existing method of treating rust on the surface of seamless steel pipes mainly adopts grinding. However, when acting on the surface of the steel pipe, the traditional grinding machine can only produce a small contact area and the grinding speed is slow, which is not conducive to the rapid treatment of rust on the surface of the steel pipe. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for mechanically treating the black skin on the surface of a steel billet for making a seamless steel pipe, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for mechanically treating black skin on the surface of a steel billet for producing a seamless steel pipe, comprising:

[0008] A base, wherein two sets of bidirectional drive assemblies are symmetrically arranged on the base, and the two sets of bidirectional drive assemblies are connected by a second belt;

[0009] Support rollers are provided in multiple groups and are connected to the bidirectional drive assembly, and the bidirectional drive assembly can adjust the distance between two support rollers on the same side;

[0010] An elastic tensioning assembly is connected to the bidirectional driving assembly, and an abrasive belt is sleeved on the elastic tensioning assembly;

[0011] The follower assembly is connected to the elastic tensioning assembly and the bidirectional drive assembly. When the bidirectional drive assembly drives the two support rollers on the same side to move relative to each other, the follower assembly can keep the elastic tensioning assembly with a predetermined tensioning force on the sanding belt.

[0012] As a further solution of the present invention: the bidirectional drive assembly includes a support seat arranged on the base, a bidirectional screw rod is rotatably installed in the support seat, a threaded sleeve is provided on the bidirectional screw rod and is threadedly connected to the screw rod, the threaded sleeve is slidably fitted with the inner wall of the support seat, and the threaded sleeve is connected to a connecting piece arranged on the outside of the support seat, a support roller is rotatably installed on the connecting piece, and the rotating shaft of the support roller is connected to the No. 1 motor fixed to the connecting piece through a No. 1 belt.

[0013] As a further solution of the present invention: the elastic tensioning assembly includes a crossbar connected to the connecting member, a bracket is slidably mounted on the crossbar, and a first roller is rotatably mounted on the bracket;

[0014] The elastic tensioning assembly further includes an energy storage structure connected to the bracket via a telescopic plate, two No. 2 rollers are symmetrically mounted on the energy storage structure for rotation, and the abrasive belt is sleeved between the No. 1 roller and the No. 2 roller;

[0015] The energy storage structure is slidably connected to the follower assembly.

[0016] As a further solution of the present invention: the telescopic plate includes two connecting sleeves symmetrically arranged on the energy storage structure and a telescopic shaft fixedly connected to the bracket, and the telescopic shaft is slidably connected to the connecting sleeves.

[0017] As a further solution of the present invention: the energy storage structure includes a vertical frame connected to the connecting sleeve, the vertical frame is provided with a No. 1 slide groove along its length direction, a No. 1 slider is slidably installed in the No. 1 slide groove, the No. 1 slider is slidably connected to the vertical shaft provided in the No. 1 slide groove, and a spring is sleeved on the vertical shaft, one end of the spring is connected to the No. 1 slider, and the other end is connected to the follower assembly;

[0018] A transverse plate is fixed on the first sliding block, the transverse plate is connected to the second roller, and a second motor connected to the rotating shaft of the second roller is fixed on the transverse plate.

[0019] As a further solution of the present invention: the follower assembly includes a second slider slidably mounted in the first slide groove, and the second slider is connected to an end of the spring away from the first slider;

[0020] The follower assembly also includes a lifting structure connected to the threaded sleeve plate and the second slider, and a lifting rod slidably connected to the second slider is installed on the lifting structure.

[0021] As a further embodiment of the present invention, the lifting structure includes two vertical plates symmetrically arranged on the base, each vertical plate having a second slide groove provided along its length, a third slider slidably mounted in the second slide groove, and the third slider fixedly connected to the end of the lifting rod;

[0022] The lifting assembly also includes a guide kit connecting the third slider and the threaded sleeve.

[0023] As a further solution of the present invention: the guide kit includes a driving plate fixedly connected to the third slider and a convex shaft connected to the threaded sleeve and passing through the support seat;

[0024] The driving plate is symmetrically provided with two inclined grooves, and the convex shaft can slide in the inclined grooves.

[0025] As a further solution of the present invention: a guide groove is provided on the base, a linear transmission module is slidably installed in the guide groove, and the linear transmission module is connected to the bracket.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] When the steel pipe to be processed is placed on the support roller, an extrusion force is generated on the abrasive belt, causing the abrasive belt to adhere to the circumferential surface of the steel pipe to be processed. The No. 1 and No. 2 motors can drive the abrasive belt and the steel pipe to be processed to move in opposite directions, thereby improving the friction effect. At the same time, when the No. 1 and No. 2 motors are working, the linear transmission module will also drive the bracket to move horizontally, so that the abrasive belt can evenly act on the outer surface of the steel pipe to be processed.

[0028] When removing black scale from steel pipes of different diameters, the pressure value between the steel pipe to be treated and the abrasive belt can be maintained within a predetermined range, and the standard for removing black scale is consistent for steel pipes of different diameters, thereby avoiding different degrees of wear on the surface of the steel pipe due to different friction between the steel pipe and the abrasive belt caused by the diameter of the steel pipe, and better ensuring the removal effect of black scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a structural schematic diagram of an embodiment of a device for mechanically treating black skin on the surface of a steel billet for producing seamless steel pipes.

[0030] Figure 2 This is a structural schematic diagram from another angle of an embodiment of a device for mechanically treating black skin on the surface of a steel billet for producing seamless steel pipes.

[0031] Figure 3 This is a schematic structural diagram of a bidirectional drive assembly in one embodiment of a device for mechanically processing black skin on the surface of a steel billet for producing seamless steel pipes.

[0032] Figure 4 This is a schematic structural diagram of the elastic tensioning component in one embodiment of a device for mechanically treating the black skin on the surface of a steel billet for producing seamless steel pipes.

[0033] Figure 5 for Figure 4 A magnified view of the structure at point A in the middle.

[0034] Figure 6 The present invention is a schematic planar structural diagram of an elastic tensioning component in one embodiment of a device for mechanically treating the black skin on the surface of a steel billet for producing seamless steel pipes.

[0035] Figure 7 The present invention is a schematic diagram of the partial structure of the follower component in one embodiment of a device for mechanically treating the black skin on the surface of a steel billet for producing seamless steel pipes.

[0036] In the figure: 1. Base; 101. Guide groove; 2. Support seat; 3. Bidirectional screw; 4. Threaded sleeve; 5. Connector; 6. Support roller; 7. Belt No. 1; 8. Motor No. 1; 9. Cam; 10. Belt No. 2; 11. Crossbar; 12. Bracket; 13. Roller No. 1; 14. Roller No. 2; 15. Cross plate; 16. Vertical frame; 1601. Slide No. 1; 17. Vertical shaft; 18. Slider No. 1; 19. Spring; 20. Slider No. 2; 21. Connecting sleeve; 22. Telescopic shaft; 23. Lifting rod; 24. Motor No. 2; 25. Vertical plate; 2501. Slide No. 2; 26. Slider No. 3; 27. Drive plate; 2701. Inclined groove; 28. Abrasive belt; 29. ​​Linear transmission module. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0038] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0039] See also Figures 1 to 7In an embodiment of the present invention, a device for mechanically processing black skin on the surface of a steel billet for making a seamless steel pipe includes: a base 1, a support roller 6, an elastic tensioning component, and a follower component, so that when removing black skin from steel pipes of different diameters, the pressure value between the steel pipe to be processed and the sanding belt 28 can be maintained within a predetermined range, so that the standard for removing black skin is consistent for steel pipes of different diameters, avoiding different friction between the steel pipe and the sanding belt 28 caused by the diameter of the steel pipe, which leads to different degrees of wear on the surface of the steel pipe, and better ensuring the effect of removing black skin.

[0040] The details are as follows: two sets of bidirectional drive components are symmetrically arranged on the base 1, and the two sets of bidirectional drive components are connected by a second belt 10;

[0041] The support rollers 6 are provided in multiple groups and are connected to the bidirectional drive assembly, and the bidirectional drive assembly can adjust the distance between the two support rollers 6 on the same side;

[0042] The bidirectional drive assembly includes a support seat 2 arranged on the base 1, a bidirectional screw rod 3 is rotatably installed in the support seat 2, a threaded sleeve 4 is provided on the bidirectional screw rod 3 and is threadedly connected to it, the threaded sleeve 4 slides in contact with the inner wall of the support seat 2, and the threaded sleeve 4 is connected to a connecting piece 5 arranged on the outside of the support seat 2, a support roller 6 is rotatably installed on the connecting piece 5, and the rotating shaft of the support roller 6 is connected to the No. 1 motor 8 fixed on the connecting piece 5 through the No. 1 belt 7.

[0043] The elastic tightening assembly is connected to the bidirectional driving assembly, and the elastic tightening assembly is sleeved with a sanding belt 28;

[0044] The elastic tensioning assembly includes a crossbar 11 connected to the connecting member 5, a bracket 12 is slidably mounted on the crossbar 11, a first roller 13 is rotatably mounted on the bracket 12, a guide groove 101 is provided on the base 1, a linear transmission module 29 is slidably mounted in the guide groove 101, and the linear transmission module 29 is connected to the bracket 12;

[0045] The elastic tensioning assembly also includes an energy storage structure connected to the bracket 12 via a telescopic plate, two No. 2 rollers 14 are symmetrically mounted on the energy storage structure for rotation, and the abrasive belt 28 is sleeved between the No. 1 roller 13 and the No. 2 roller 14. The telescopic plate includes two connecting sleeves 21 symmetrically arranged on the energy storage structure and a telescopic shaft 22 fixedly connected to the bracket 12, and the telescopic shaft 22 is slidably connected to the connecting sleeve 21;

[0046] The energy storage structure is slidably connected to the follower assembly, and the energy storage structure includes a stand 16 connected to the connecting sleeve 21, and the stand 16 is provided with a No. 1 slide groove 1601 along its length direction, and a No. 1 slider 18 is slidably installed in the No. 1 slide groove 1601, and the No. 1 slider 18 is slidably connected to the vertical shaft 17 provided in the No. 1 slide groove 1601, and a spring 19 is sleeved on the vertical shaft 17, and one end of the spring 19 is connected to the No. 1 slider 18, and the other end is connected to the follower assembly;

[0047] A transverse plate 15 is fixed on the first slider 18 , the transverse plate 15 is connected to the second roller 14 , and a second motor 24 connected to the rotating shaft of the second roller 14 is fixed on the transverse plate 15 .

[0048] In the initial state, the spring 19 is in a compressed state, and the cross plate 15 is in a state of being away from the bracket 12. At this time, the two groups of No. 1 rollers 13 and the two groups of No. 2 rollers 14 are in a state of being away from each other, and the abrasive belt 28 is in a taut state.

[0049] When in use, the steel pipe to be processed is lifted and its length direction is parallel to the length direction of the base 1, and then the steel pipe is slowly lowered so that the steel pipe is pressed on the sanding belt 28, and the upper part of the sanding belt 28 is bent and deformed. At this time, since the length of the sanding belt 28 is constant, the two No. 2 rollers 14 and the cross plate 15 connected to the two can be moved toward the bracket 12, and the spring 19 is further compressed until the steel pipe to be processed is placed on the support rollers 6 on both sides thereof. At this time, the No. 1 motor 8 and the No. 2 motor 24 are started, which can rotate the support roller 6 and the No. 2 roller 14, and make the steel pipe to be processed and the sanding belt 28 rotate relative to each other, thereby performing the black skin removal operation.

[0050] It should be noted that when motor No. 1 8 and motor No. 2 24 are working, the linear transmission module 29 will also work synchronously to drive the bracket 12 to move along the length direction of the steel pipe to be processed, so that the sanding belt 28 can act evenly on the outer surface of the steel pipe to improve the black skin removal effect.

[0051] It should also be noted that motor No. 1 8 and motor No. 2 24 should be arranged on the same side of the sanding belt 28, and the output shaft rotation directions of motor No. 1 8 and motor No. 2 24 should be opposite, so that the sanding belt 28 and the outer peripheral surface of the steel pipe to be processed can move relative to each other, so that the black skin can be removed by friction between the two.

[0052] Through the above-mentioned arrangement, after the steel pipe to be processed is placed on the support roller 6, an extrusion pressure will be generated on the sanding belt 28, and the sanding belt 28 will fit the circumferential surface of the steel pipe to be processed, and the No. 1 motor 8 and the No. 2 motor 24 can drive the sanding belt 28 and the steel pipe to be processed to move in opposite directions, thereby improving the friction effect. At the same time, when the No. 1 motor 8 and the No. 2 motor 24 are working, the linear transmission module 29 will also drive the bracket 12 to move horizontally, so that the sanding belt 28 can evenly act on the outer surface of the steel pipe to be processed.

[0053] Furthermore, by rotating the bidirectional screw 3, the two threaded sleeves 4 can be moved closer to or away from each other to match the steel pipes to be processed of different diameters, so that the steel pipes to be processed can roll stably on the support roller 6 while ensuring the support of the support roller 6 for the steel pipes to be processed. Moreover, since the bidirectional screw 3 and the threaded sleeve 4 are connected by a thread, and the threaded connection has self-locking properties, it is ensured that after the bidirectional screw 3 stops rotating, the distance between the two threaded sleeves 4 will not change, thereby improving the support effect of the support roller 6 on the steel pipes to be processed.

[0054] See also Figures 4 to 7 The following assembly is connected to the elastic tensioning assembly and the bidirectional driving assembly. The following assembly can enable the elastic tensioning assembly to maintain a predetermined tensioning force on the abrasive belt 28 when the bidirectional driving assembly drives the two supporting rollers 6 on the same side to move relative to each other;

[0055] The follower assembly includes a second slider 20 slidably mounted in the first slide groove 1601 , and the second slider 20 is connected to the end of the spring 19 away from the first slider 18 ;

[0056] The follower assembly also includes a lifting structure connecting the threaded sleeve 4 and the second slider 20, and a lifting rod 23 slidably connected to the second slider 20 is installed on the lifting structure. The lifting structure includes two vertical plates 25 symmetrically arranged on the base 1, and the vertical plates 25 are provided with a second slide groove 2501 along the length thereof. A third slider 26 is slidably installed in the second slide groove 2501, and the third slider 26 is fixedly connected to the end of the lifting rod 23;

[0057] The lifting assembly further includes a guide kit connecting the third slider 26 and the threaded sleeve 4, the guide kit including a drive plate 27 fixedly connected to the third slider 26 and a convex shaft 9 connected to the threaded sleeve 4 and passing through the support seat 2;

[0058] The driving plate 27 is symmetrically provided with two inclined grooves 2701 , and the protruding shaft 9 can slide in the inclined grooves 2701 .

[0059] In order to ensure the stability of the support of the steel pipe to be processed by the support roller 6 and to ensure that the steel pipe to be processed will not roll off the support roller 6, the spacing between the support rollers 6 on both sides of the steel pipe to be processed should be adjusted for steel pipes to be processed with different diameters. Specifically, when the diameter of the steel pipe to be processed is larger, the distance between the two support rollers 6 should be increased accordingly, and vice versa. Although this approach improves the stability of the steel pipe to be processed on the support roller 6, it will change the force of the steel pipe to be processed on the sanding belt 28. Specifically, the larger the diameter of the steel pipe to be processed, the greater the force between it and the sanding belt 28, and the smaller the diameter of the steel pipe to be processed, the smaller the force between it and the sanding belt 28.

[0060] In this embodiment, when the two support rollers 6 move away from each other, the convex shaft 9 cooperates with the inclined groove 2701 to drive the lifting rod 23 to move upward. At this time, the lifting rod 23 can make the second slider 20 move upward so that the spring 19 is released to a certain extent to offset the increased force acting on the sanding belt 28 when the diameter of the steel pipe to be processed is larger, and vice versa.

[0061] Through the above-mentioned arrangement, when black scale is removed from steel pipes of different diameters, the pressure value between the steel pipe to be processed and the sanding belt 28 can be maintained within a predetermined range, so that the standard for removing black scale is consistent for steel pipes of different diameters, avoiding the different friction between the steel pipe and the sanding belt 28 caused by the diameter of the steel pipe, which leads to different degrees of wear on the surface of the steel pipe, and better ensuring the removal effect of black scale.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0063] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A device for mechanically treating black skin on the surface of a steel billet for making seamless steel pipes, characterized in that: include: A base (1), wherein two sets of bidirectional drive components are symmetrically arranged on the base (1), and the two sets of bidirectional drive components are connected via a second belt (10); Support rollers (6) are provided in multiple groups and are connected to the bidirectional drive assembly, wherein the bidirectional drive assembly is capable of adjusting the distance between two support rollers (6) on the same side; An elastic tensioning assembly connected to the bidirectional drive assembly, wherein the elastic tensioning assembly is provided with an abrasive belt (28); A follower assembly is connected to the elastic tensioning assembly and the bidirectional drive assembly, and the follower assembly is capable of enabling the elastic tensioning assembly to maintain a predetermined tensioning force on the sanding belt (28) when the bidirectional drive assembly drives the two support rollers (6) on the same side to move relative to each other; The bidirectional drive assembly comprises a support seat (2) arranged on the base (1), a bidirectional screw rod (3) being rotatably mounted in the support seat (2), a threaded sleeve (4) being threadedly connected to the bidirectional screw rod (3), and a connecting piece (5) arranged outside the support seat (2) being connected to the threaded sleeve (4); The elastic tensioning assembly comprises a crossbar (11) connected to the connecting member (5), a bracket (12) is slidably mounted on the crossbar (11), and a first roller (13) is rotatably mounted on the bracket (12); The elastic tensioning assembly further comprises an energy storage structure connected to the bracket (12) via a telescopic plate, two No. 2 rollers (14) are symmetrically mounted on the energy storage structure for rotation, and the abrasive belt (28) is sleeved between the No. 1 roller (13) and the No. 2 roller (14); The energy storage structure is slidably connected to the follower assembly; The energy storage structure includes a stand (16), wherein the stand (16) is provided with a No. 1 slide groove (1601) along its length direction, wherein a No. 1 slider (18) is slidably installed in the No. 1 slide groove (1601), wherein the No. 1 slider (18) is slidably connected to a vertical shaft (17) provided in the No. 1 slide groove (1601), and a spring (19) is sleeved on the vertical shaft (17), wherein one end of the spring (19) is connected to the No. 1 slider (18), and the other end is connected to the follower assembly; The follower assembly includes a second slider (20) slidably mounted in the first slide groove (1601), and the second slider (20) is connected to an end of the spring (19) away from the first slider (18); The follower assembly further comprises a lifting structure connected to the threaded sleeve (4) and the second slider (20), and a lifting rod (23) slidably connected to the second slider (20) is installed on the lifting structure; The lifting structure comprises two vertical plates (25) symmetrically arranged on the base (1), the vertical plates (25) are provided with a second slide groove (2501) along their length, a third slider (26) is slidably installed in the second slide groove (2501), and the third slider (26) is fixedly connected to the end of the lifting rod (23); The lifting structure further includes a guide kit connecting the third slider (26) and the threaded sleeve (4); The guide kit includes a drive plate (27) fixedly connected to the third slider (26) and a convex shaft (9) connected to the threaded sleeve (4) and passing through the support seat (2); Two inclined grooves (2701) are symmetrically provided on the driving plate (27), and the convex shaft (9) is capable of sliding in the inclined grooves (2701).

2. The device for mechanically treating the black skin on the surface of a steel billet for making a seamless steel pipe according to claim 1, characterized in that: The threaded sleeve (4) is slidably fitted with the inner wall of the support seat (2); a support roller (6) is rotatably mounted on the connecting member (5); and a rotating shaft of the support roller (6) is connected to a No. 1 motor (8) fixed on the connecting member (5) via a No. 1 belt (7).

3. The device for mechanically treating the black skin on the surface of a steel billet for making a seamless steel pipe according to claim 2, characterized in that: The telescopic plate comprises two connecting sleeves (21) symmetrically arranged on the energy storage structure and a telescopic shaft (22) fixedly connected to the bracket (12), wherein the telescopic shaft (22) is slidably connected to the connecting sleeves (21).

4. The device for mechanically treating black skin on the surface of a steel billet for producing a seamless steel pipe according to claim 3, characterized in that: The connecting sleeve (21) is connected to the stand (16), a horizontal plate (15) is fixed on the first slider (18), the horizontal plate (15) is connected to the second roller (14), and a second motor (24) connected to the rotating shaft of the second roller (14) is fixed on the horizontal plate (15).

5. The device for mechanically treating black skin on the surface of a steel billet for making a seamless steel pipe according to claim 3, characterized in that: A guide groove (101) is provided on the base (1), a linear transmission module (29) is slidably installed in the guide groove (101), and the linear transmission module (29) is connected to the bracket (12).

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