阅读说明：本技术 轧花纹成型机组及具有其的焊管生产系统 (Pattern rolling forming unit and welded pipe production system with same ) 是由 李军兆 张望成 梁国栋 李强 孙清洁 鲁蓉蓉 黄聪 曾宪山 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种轧花纹成型机组及具有其的焊管生产系统,包括：安装机架,安装机架上设有配合作用的第一轧辊和第二轧辊,第一轧辊转动支设于安装机架上,第二轧辊连接有滑移驱动机构,且第一轧辊和第二轧辊连接有用于驱动两者分别旋转的旋转驱动机构。滑移驱动机构连接有用于控制其动作的滑移控制系统,以在滑移控制系统的控制下滑移驱动机构驱动第二轧辊施加带材间断式且大小可调的轧制压力,以在带材上轧制出间断式且深度可调的花纹。采用本发明的轧花纹成型机组中,带材上轧花段和光面段的长度可调,轧花段的花纹深度可控,进而确保由带材制备成型的换热管在后期使用过程中与管板胀接的紧密性,避免连续花纹焊管存在的泄露检验不合格等问题。(The invention discloses an embossing line forming unit and a welded pipe production system with the same, wherein the embossing line forming unit comprises: the roller mounting device comprises a mounting rack, wherein a first roller and a second roller which have a matching effect are arranged on the mounting rack, the first roller is rotatably supported on the mounting rack, the second roller is connected with a sliding driving mechanism, and the first roller and the second roller are connected with a rotary driving mechanism which is used for driving the first roller and the second roller to respectively rotate. The slip driving mechanism is connected with a slip control system for controlling the movement of the slip driving mechanism, so that the slip driving mechanism drives the second roller to apply intermittent and adjustable rolling pressure on the strip under the control of the slip control system, and intermittent and adjustable-depth patterns are rolled on the strip. In the embossing pattern forming unit, the lengths of the embossing section and the smooth section on the strip are adjustable, and the pattern depth of the embossing section is controllable, so that the tightness of expansion joint between the heat exchange tube prepared and formed by the strip and the tube plate in the later use process is ensured, and the problems of unqualified leakage inspection and the like of continuous pattern welded tubes are avoided.)

1. An embossing line forming unit, comprising:

the mounting machine comprises a mounting rack (10), wherein a first roller (20) and a second roller (30) which have a matching effect are arranged on the mounting rack (10) so as to roll patterns on a strip (40) which is drawn between the first roller (20) and the second roller (30) and penetrates through the mounting rack, the first roller (20) is rotatably supported on the mounting rack (10), the second roller (30) is connected with a sliding driving mechanism (50) so as to slide relative to the first roller (20) under the action of the sliding driving mechanism (50), and the first roller (20) and the second roller (30) are connected with a rotary driving mechanism for driving the first roller (20) and the second roller (30) to respectively rotate;

the slippage driving mechanism (50) is connected with a slippage control system (60) for controlling the movement of the slippage driving mechanism, so that the slippage driving mechanism (50) drives the second roller (30) to apply discontinuous rolling pressure with adjustable size on the strip (40) under the control of the slippage control system (60), and discontinuous patterns with adjustable depth are rolled on the strip (40).

2. The embossing line forming train according to claim 1,

the mounting rack (10) comprises a mounting bottom plate (11) and two first vertical plates (12) which are vertically connected to two ends of the mounting bottom plate (11);

the first roller (20) comprises a first mounting shaft (21) and a first roller body (22) fixedly arranged on the excircle of the first mounting shaft (21);

two ends of the first mounting shaft (21) are rotatably supported on the two first vertical plates (12) respectively.

3. The embossing line forming train according to claim 2,

the sliding driving mechanism (50) comprises a first driving cylinder (51) connected to the mounting base plate (11), a first supporting plate (52) fixed with the driving end of the first driving cylinder (51), and two first sliding plates (53) vertically connected to two ends of the first supporting plate (52), wherein the two first sliding plates (53) are respectively connected to the two first vertical plates (12) in a sliding manner;

the second roller (30) comprises a second mounting shaft (31) and a second roller body (32) fixedly arranged on the outer circle of the second mounting shaft (31), two ends of the second mounting shaft (31) are respectively rotatably supported on the two first sliding plates (53), and the second roller body (32) and the first roller body (22) are relatively arranged on two sides of the strip (40).

4. The embossing line forming train according to claim 1,

the mounting frame (10) comprises a mounting bottom plate (11), two groups of vertical plate groups vertically connected to the mounting bottom plate (11), a cover plate (14) connected to the top ends of the two groups of vertical plate groups, and a suspension support (15) suspended on the lower surface of the cover plate (14), wherein each vertical plate group comprises two second vertical plates (13) which are arranged at intervals;

the first roller (20) comprises a first mounting shaft (21) and a first roller body (22) fixedly arranged on the excircle of the first mounting shaft (21);

two ends of the first mounting shaft (21) are rotatably supported on the two suspension supports (15) respectively.

5. The embossing line forming train according to claim 4,

the sliding driving mechanism (50) comprises two second driving cylinders (54) connected to the mounting base plate (11), second supporting plates (55) fixed to driving ends of the second driving cylinders (54) respectively, and second sliding plates (56) vertically connected to the second supporting plates (55), and two sides of each second sliding plate (56) are connected between two second vertical plates (13) of the corresponding vertical plate group in a sliding mode respectively;

the second roller (30) comprises a second mounting shaft (31) and a second roller body (32) fixedly arranged on the outer circle of the second mounting shaft (31), two ends of the second mounting shaft (31) are respectively rotatably supported on the two second sliding plates (56), and the second roller body (32) and the first roller body (22) are relatively arranged on two sides of the strip (40).

6. The embossing line forming train according to any one of claims 3 or 5,

the slippage control system (60) comprises a controller, a pressure sensor electrically connected with the controller, and a limiting component (62) used for adjustably mounting the pressure sensor;

the limiting component (62) is connected to the mounting frame (10) and is positioned between the first roller (20) and the second roller (30);

the pressure sensor is connected to the end of the stop member (62) and faces the second roller (30) for abutment with the first sliding plate (53) or the second sliding plate (56);

the sliding driving mechanism (50) and the rotating driving mechanism are respectively connected with the controller.

7. The embossing line forming train according to claim 1,

the slippage control system (60) comprises a controller and a displacement sensor electrically connected with the controller;

the displacement sensor is connected to the mounting frame (10) and is positioned between the first roller (20) and the second roller (30);

the sliding driving mechanism (50) and the rotating driving mechanism are respectively connected with the controller.

8. The embossing line forming train according to any one of claims 3 or 5,

the first driving cylinder (51) and the second driving cylinder (54) are both hydraulic oil cylinders;

the slippage control system (60) comprises a controller, a hydraulic circuit connected with the hydraulic oil cylinder and used for controlling the hydraulic oil cylinder to act, and a servo valve connected in the hydraulic circuit, wherein the servo valve is connected with the controller and used for measuring the flow of lubricating oil in the hydraulic circuit;

the sliding driving mechanism (50) and the rotating driving mechanism are respectively connected with the controller.

9. The embossing line forming train according to any one of claims 3 or 5,

the rotary driving mechanism comprises a driving motor, a speed reducer connected with the driving motor and a coupler connected with the speed reducer, and the coupler is connected with the first mounting shaft (21) or the second mounting shaft (31) which is correspondingly arranged; or

The rotary driving mechanism comprises a driving motor, a speed reducer connected with the driving motor, a driving gear connected with the speed reducer and a driven driving gear meshed with the driving gear, wherein the driving gear is installed on the excircle of the second installation shaft (31), and the driven driving gear is installed on the excircle of the first installation shaft (21).

10. A welded tube production system, comprising:

an unwinder, an embossing line forming unit as claimed in any one of claims 1 to 9 connected to the unwinder, a roll forming unit connected to the embossing line forming unit, and a welding unit connected to the roll forming unit.

Technical Field

The invention relates to the technical field of welded pipe manufacturing, in particular to an embossing forming unit. In addition, the invention also relates to a welded pipe production system comprising the pattern rolling forming unit.

Background

Compared with a smooth tube, the high-efficiency heat exchange tube has higher heat exchange coefficient, thereby having huge application prospect in the fields of air cooling and the like. At present, the production process of the high-efficiency heat exchange tube mainly comprises the steps of manufacturing a welded tube or a seamless tube and then performing off-line rolling, so that the production steps of the high-efficiency heat exchange tube are various, the production efficiency is low, and the price of the high-efficiency heat exchange tube is always high.

In order to realize the purpose of producing the high-efficiency heat exchange tube on line, the mode of adopting an embossing roller to replace a smooth roller on a welded tube forming unit is developed, patterns can be pressed on the surface of a strip, and then the strip is welded to form the high-efficiency heat exchange welded tube. However, in this form, because the rollers of the existing unit are fixed and not adjustable, discontinuous rolling cannot be realized, and the whole strip is rolled into patterns. The outer wall of the produced welded pipe is completely provided with patterns, and due to the existence of the patterns, a gap exists between the pipe and the pipe plate after the pipe is expanded, so that the use of the efficient heat exchange pipe with the patterns on the outer wall is limited due to the fact that leakage inspection cannot be conducted.

Disclosure of Invention

The invention provides an embossing forming unit and a welded pipe production system with the embossing forming unit, and aims to solve the technical problem that leakage inspection cannot be passed due to the fact that gaps exist between a pipe and a pipe plate after pipe expansion due to the fact that all the wall surfaces of existing welded pipes are provided with patterns.

The technical scheme adopted by the invention is as follows:

an embossing line forming unit comprising: the mounting frame is provided with a first roller and a second roller which are matched with each other so as to roll patterns on a strip material drawn between the first roller and the second roller, the first roller is rotatably supported on the mounting frame, the second roller is connected with a sliding driving mechanism so as to slide relative to the first roller under the action of the sliding driving mechanism, and the first roller and the second roller are connected with a rotary driving mechanism for driving the first roller and the second roller to respectively rotate; the slip driving mechanism is connected with a slip control system for controlling the movement of the slip driving mechanism, so that the slip driving mechanism drives the second roller to apply intermittent and adjustable rolling pressure on the strip under the control of the slip control system, and intermittent and adjustable-depth patterns are rolled on the strip.

Furthermore, the mounting rack comprises a mounting bottom plate and two first vertical plates vertically connected to two ends of the mounting bottom plate; the first roller comprises a first mounting shaft and a first roller body fixedly arranged on the excircle of the first mounting shaft; the two ends of the first mounting shaft are respectively rotatably supported on the two first vertical plates.

Furthermore, the sliding driving mechanism comprises a first driving cylinder connected to the mounting base plate, a first supporting plate fixed with the driving end of the first driving cylinder, and two first sliding plates vertically connected to two ends of the first supporting plate, wherein the two first sliding plates are respectively connected to the two first vertical plates in a sliding manner; the second roller comprises a second installation shaft and a second roller body fixedly arranged on the outer circle of the second installation shaft, two ends of the second installation shaft are respectively rotatably supported on the two first sliding plates, and the second roller body and the first roller body are oppositely arranged on two sides of the strip.

Furthermore, the mounting rack comprises a mounting bottom plate, two groups of vertical plate groups vertically connected to the mounting bottom plate, a cover plate connected to the top ends of the two groups of vertical plate groups, and a suspension support suspended on the lower surface of the cover plate, wherein each vertical plate group comprises two second vertical plates arranged at intervals; the first roller comprises a first mounting shaft and a first roller body fixedly arranged on the excircle of the first mounting shaft; two ends of the first mounting shaft are respectively rotatably supported on the two suspension supports.

Furthermore, the sliding driving mechanism comprises two second driving cylinders connected to the mounting base plate, second supporting plates fixed to driving ends of the second driving cylinders respectively, and second sliding plates vertically connected to the second supporting plates, and two sides of each second sliding plate are connected between two second vertical plates of the corresponding vertical plate group in a sliding mode respectively; the second roller comprises a second mounting shaft and a second roller body fixedly arranged on the outer circle of the second mounting shaft, two ends of the second mounting shaft are rotatably supported on the two second sliding plates respectively, and the second roller body and the first roller body are oppositely arranged on two sides of the strip.

Furthermore, the slippage control system comprises a controller, a pressure sensor electrically connected with the controller, and a limiting component for adjustably mounting the pressure sensor; the limiting component is connected to the mounting rack and positioned between the first roller and the second roller; the pressure sensor is connected to the end part of the limiting component and faces the second roller so as to be abutted against the first sliding plate or the second sliding plate; the sliding driving mechanism and the rotating driving mechanism are respectively connected with the controller.

Furthermore, the slippage control system comprises a controller and a displacement sensor electrically connected with the controller; the displacement sensor is connected to the mounting rack and positioned between the first roller and the second roller; the sliding driving mechanism and the rotating driving mechanism are respectively connected with the controller.

Furthermore, the first driving cylinder and the second driving cylinder are both hydraulic oil cylinders; the slippage control system comprises a controller, a hydraulic loop and a servo valve, wherein the hydraulic loop is connected with the hydraulic oil cylinder and used for controlling the hydraulic oil cylinder to act, the servo valve is connected in the hydraulic loop and connected with the controller and used for measuring the flow of lubricating oil in the hydraulic loop; the sliding driving mechanism and the rotating driving mechanism are respectively connected with the controller.

Further, the rotary driving mechanism comprises a driving motor, a speed reducer connected with the driving motor and a coupler connected with the speed reducer, and the coupler is connected with the first mounting shaft or the second mounting shaft which is correspondingly arranged; or the rotary driving mechanism comprises a driving motor, a speed reducer connected with the driving motor, a driving gear connected with the speed reducer and a driven driving gear externally meshed with the driving gear, the driving gear is arranged on the excircle of the second mounting shaft, and the driven driving gear is arranged on the excircle of the first mounting shaft.

According to another aspect of the present invention, there is also provided a welded pipe production system including: the device comprises an uncoiler, an embossing line forming unit, a drum forming unit and a welding unit, wherein the embossing line forming unit is connected with the uncoiler, the drum forming unit is connected with the embossing line forming unit, and the welding unit is connected with the drum forming unit.

The invention has the following beneficial effects:

the embossing pattern forming unit can realize the automatic continuous production of the strip with patterns on the wall surface, the lengths of an embossing section and a smooth section on the strip are adjustable, the pattern depth of the embossing section is controllable, the tightness of expansion joint of the heat exchange tube prepared and formed by the strip and a tube plate in the later use process is further ensured, the problems of unqualified leakage inspection and the like of a continuous pattern welded tube are avoided, the production cost of the efficient heat exchange tube with patterns on the wall surface is obviously reduced, and the popularization and the use of the efficient heat exchange tube are promoted; the invention can solve the technical difficulty that the prior welding pipe production line can only produce smooth pipes and can not produce high-efficiency heat exchange pipes on line, in the embossing pattern forming unit, the displacement of a second roller and the rolling pressure applied to a strip by the second roller are accurately controlled by a sliding driving mechanism, at least one of the first roller and the second roller is a pattern roller, the strip can be subjected to surface embossing to form pattern appearance after passing through the forming unit, the movement of the second roller is accurately controlled by the sliding driving mechanism, the requirements of continuous embossing and intermittent embossing can be realized, the length of an embossing section can be adjusted, the rolling pressure applied to the strip by the second roller is controlled by controlling the sliding driving mechanism, the depth of the pattern of the embossing section on the strip can be controlled, and the pattern form on the first roller and/or the second roller is controlled, controlling the appearance of patterns on the surface of the strip; the forming unit is a set of independent control and movement system, is flexible to use and strong in adaptability, and can realize online continuous production of the high-efficiency heat exchange tube when being connected to a production line of the high-efficiency heat exchange tube, so that the production efficiency and the production quality of the high-efficiency heat exchange tube are obviously improved;

in the welded pipe production system, the automatic continuous production of the strip with patterns on the wall surface can be realized, the lengths of the embossing section and the smooth surface section on the strip are adjustable, and the pattern depth of the embossing section is controllable, so that the tightness of the expansion joint of the heat exchange pipe prepared and formed by the strip and the pipe plate in the later use process is ensured, the problems of unqualified leakage inspection and the like of the continuous pattern welded pipe are avoided, the production cost of the efficient heat exchange pipe with patterns on the wall surface is obviously reduced, and the popularization and the use of the efficient heat exchange pipe are promoted; the welded tube production system is flexible to use and high in adaptability, and can realize the on-line continuous production of the high-efficiency heat exchange tube, so that the production efficiency and the production quality of the high-efficiency heat exchange tube are obviously improved.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic spatial structure of a first embodiment of an embossing pattern forming assembly according to a preferred embodiment of the present invention;

FIG. 2 is a schematic front view of the structure of FIG. 1;

FIG. 3 is a schematic spatial structure diagram of a second embodiment of an embossing pattern forming assembly according to the preferred embodiment of the present invention;

FIG. 4 is a schematic front view of the structure of FIG. 3;

FIG. 5 is a schematic left side view of the structure of FIG. 3;

fig. 6 is a schematic front view of the prepared high-efficiency heat exchange tube.

Description of the figures

10. Installing a frame; 11. mounting a bottom plate; 12. a first vertical plate; 13. a second vertical plate; 14. a cover plate; 15. a suspension support; 20. a first roll; 21. a first mounting shaft; 22. a first rolling body; 30. a second roll; 31. a second mounting shaft; 32. a second rolling body; 40. a strip of material; 50. a slip drive mechanism; 51. a first drive cylinder; 52. a first pallet; 53. a first slide plate; 54. a second drive cylinder; 55. a second pallet; 56. a second slide plate; 60. a slip control system; 62. a stop member.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

Referring to fig. 1 and 3, a preferred embodiment of the present invention provides an embossing line forming assembly, including: the device comprises a mounting frame 10, wherein a first roller 20 and a second roller 30 which have a matching effect are arranged on the mounting frame 10 so as to roll patterns on a strip material 40 which is drawn between the first roller 20 and the second roller 30 and penetrates through the mounting frame 10, the first roller 20 is rotatably supported on the mounting frame 10, the second roller 30 is connected with a sliding driving mechanism 50 so as to slide relative to the first roller 20 under the action of the sliding driving mechanism 50, and the first roller 20 and the second roller 30 are connected with a rotary driving mechanism which is used for driving the first roller 20 and the second roller 30 to rotate respectively. The slip driving mechanism 50 is connected with a slip control system 60 for controlling the movement of the slip driving mechanism 50, so that the slip driving mechanism 50 drives the second roller 30 to apply intermittent and adjustable rolling pressure to the strip 40 under the control of the slip control system 60, so as to roll intermittent and adjustable-depth patterns on the strip 40.

When the embossing line forming unit works, the rotary driving mechanism drives the first roller 20 and the second roller 30 to rotate respectively, and the strip is penetrated through a gap between the first roller 20 and the second roller 30 under the action of traction force applied by an external traction device; the slippage control system 60 correspondingly drives the slippage driving mechanism 50 to act according to a preset mode of the system, so that the slippage driving mechanism 50 drives the second roller 30 to apply intermittent rolling pressure on the strip 40, the second roller 30 and the first roller 20 cooperate to roll discontinuous patterns meeting preset requirements on the strip 40, or the slippage driving mechanism 50 drives the second roller 30 to apply rolling pressure with adjustable size on the strip 40, and patterns with preset depths are rolled on the strip 40.

The embossing pattern forming unit can realize the automatic continuous production of the strip 40 with patterns on the wall surface, the lengths of an embossing section and a smooth section on the strip 40 are adjustable, the pattern depth of the embossing section is controllable, the tightness of expansion joint of the heat exchange tube prepared and formed by the strip and a tube plate in the later use process is further ensured, the problems of unqualified leakage inspection and the like of a continuous pattern welded tube are avoided, the production cost of the efficient heat exchange tube with patterns on the wall surface is obviously reduced, and the popularization and the use of the efficient heat exchange tube are promoted; the invention can solve the technical difficulty that the prior welding pipe production line can only produce smooth pipes and can not produce high-efficiency heat exchange pipes on line, in the embossing pattern forming unit, the displacement of a second roller 30 and the rolling pressure applied to a strip 40 by the second roller 30 are accurately controlled by a sliding driving mechanism 50, at least one of the first roller 20 and the second roller 30 is a pattern roller, so that the strip 40 can be subjected to surface embossing to form pattern appearance after passing through the forming unit, the movement of the second roller 30 is accurately controlled by the sliding driving mechanism 50, the requirements of continuous embossing and intermittent embossing can be realized, the embossing section length can be adjusted, the rolling pressure applied to the strip 40 by the second roller 30 is controlled by controlling the sliding driving mechanism 50, the depth of the embossing section pattern on the strip can be controlled, and the pattern forms on the first roller 20 and/or the second roller 30 are controlled, controlling the appearance of patterns on the surface of the strip; the forming unit is a set of independent control and movement system, is flexible to use and strong in adaptability, and can realize the online continuous production of the high-efficiency heat exchange tube when being connected to a production line of the high-efficiency heat exchange tube, thereby obviously improving the production efficiency and the production quality of the high-efficiency heat exchange tube.

Alternatively, in the first embodiment of the installation frame 10, as shown in fig. 1 and fig. 2, the installation frame 10 includes an installation bottom plate 11 and two first vertical plates 12 vertically connected to two ends of the installation bottom plate 11, and the installation frame 10 has a simple structure and is easy to manufacture. The first roller 20 includes a first mounting shaft 21, and a first roller body 22 fixedly mounted on an outer circumference of the first mounting shaft 21. The two ends of the first mounting shaft 21 are rotatably supported on the two first vertical plates 12, so that the first roller 20 is simple to mount and position and easy to implement.

Alternatively, as shown in fig. 1 and 2, the first embodiment of the sliding driving mechanism 50 includes a first driving cylinder 51 connected to the mounting base plate 11, a first supporting plate 52 fixed to a driving end of the first driving cylinder 51, and two first sliding plates 53 vertically connected to two ends of the first supporting plate 52, wherein the two first sliding plates 53 are respectively slidably connected to the two first vertical plates 12. The second roller 30 includes a second mounting shaft 31 and a second roller body 32 fixedly mounted on the outer circumference of the second mounting shaft 31, two ends of the second mounting shaft 31 are rotatably supported on the two first sliding plates 53, and the second roller body 32 and the first roller body 22 are relatively disposed on two sides of the strip 40. In this alternative, the first actuating cylinder 51 is a hydraulic cylinder; a guide groove penetrating through the plate surface is formed in the first vertical plate 12, and the first sliding plate 53 is slidably arranged in the guide groove and slides under the guide effect of the guide groove; at least one of the first rolling body 22 and the second rolling body 32 is an embossing roller with patterns of different depths and shapes on the surface, the patterns on the surface of the strip are rolled by the extrusion force between the embossing roller and the smooth roller or between the embossing roller and the smooth roller, and the positions of the patterns of the welded tube can be controlled by adjusting the positions of the embossing roller and the smooth roller, for example, a high-efficiency heat exchange tube with patterns on only the outer wall, a high-efficiency heat exchange tube with patterns on only the inner wall, or a high-efficiency heat exchange tube with patterns on both the inner wall and the outer wall.

When the device works, the first driving cylinder 51 extends out, and then the first supporting plate 52 drives the two first sliding plates 53 to slide in the guide grooves formed in the first vertical plate 12, so that the second roller 30 gradually approaches the first roller 20, when pressure maintaining is completed after the first driving cylinder 51 extends out, the second roller 30 applies the set rolling pressure of the strip 40, so that the strip 40 rolls patterns with corresponding depths, when pressure maintaining and pressure relief are completed by the first driving cylinder 51, the first driving cylinder 51 retreats to drive the second roller 30 to reversely leave the first roller 20, the rolling pressure is eliminated, and the strip 40 still moves forwards under the action of traction force, so that no patterns are rolled on the strip 40 in the pressure relief time period of the first driving cylinder 51, and a smooth section is formed. In the sliding driving mechanism 50, the rolling pressure of the second roller 30 on the strip 40 can be changed by only periodically adjusting the hydraulic oil cylinder and controlling the movement stroke and the acting force of the hydraulic oil cylinder, so that different pattern depths can be obtained, the lengths of the embossing section and the smooth section can be controlled, and the sliding driving mechanism is simple to operate, easy to implement and simple in structure.

Alternatively, as shown in fig. 3-5, in a second embodiment of the installation frame 10, the installation frame 10 includes an installation bottom plate 11, two sets of vertical plates vertically connected to the installation bottom plate 11, a cover plate 14 connected to top ends of the two sets of vertical plates, and a suspension support 15 suspended on a lower surface of the cover plate 14, where the set of vertical plates includes two second vertical plates 13 disposed at an interval, and the installation frame 10 is simple in structure and easy to manufacture. The first roller 20 includes a first mounting shaft 21, and a first roller body 22 fixedly mounted on an outer circumference of the first mounting shaft 21. The two ends of the first mounting shaft 21 are rotatably supported on the two suspension supports 15, so that the first roller 20 is easy to mount and position.

Alternatively, as shown in fig. 3 to 5, the sliding driving mechanism 50 of the second embodiment of the sliding driving mechanism 50 includes two second driving cylinders 54 connected to the mounting base plate 11, second supporting plates 55 fixed to driving ends of the second driving cylinders 54, and second sliding plates 56 vertically connected to the second supporting plates 55, wherein two sides of the second sliding plates 56 are slidably connected between two second vertical plates 13 of the corresponding set of vertical plates. The second roller 30 includes a second mounting shaft 31 and a second roller body 32 fixedly mounted on the outer circumference of the second mounting shaft 31, two ends of the second mounting shaft 31 are rotatably supported on the two second sliding plates 56, and the second roller body 32 and the first roller body 22 are relatively disposed on two sides of the strip 40. In this alternative, the second actuating cylinder 54 is a hydraulic cylinder; the inner side surface of the second vertical plate 13 is provided with a convex guide slide rail, and two sides of the second sliding plate 56 are respectively connected to the guide slide rails of the first vertical plates 12 at two sides in a sliding manner so as to slide under the guide action of the guide slide rails; at least one of the first rolling body 22 and the second rolling body 32 is an embossing roller with patterns of different depths and shapes on the surface, the patterns on the surface of the strip are rolled by the extrusion force between the embossing roller and the smooth roller or between the embossing roller and the smooth roller, and the positions of the patterns of the welded tube can be controlled by adjusting the positions of the embossing roller and the smooth roller, for example, a high-efficiency heat exchange tube with patterns on only the outer wall, a high-efficiency heat exchange tube with patterns on only the inner wall, or a high-efficiency heat exchange tube with patterns on both the inner wall and the outer wall.

When the two second driving cylinders 54 are in operation, the two second driving cylinders 54 synchronously extend out, and then the second sliding plates 56 are correspondingly driven by the second supporting plates 55 to slide on the guide sliding rails, so that the second roller 30 gradually approaches to the second roller 30, when pressure maintaining is completed after the two second driving cylinders 54 extend out, the second roller 30 applies the set rolling pressure of the strip 40, so that the strip 40 rolls patterns with corresponding depths, when pressure maintaining is completed and pressure releasing is performed by the two second driving cylinders 54, the two second driving cylinders 54 synchronously retreat, so that the second roller 30 is synchronously driven to reversely leave the second roller 30, the rolling pressure is eliminated, the strip 40 still moves forwards under the action of traction force, and therefore no patterns are rolled on the strip 40 in the pressure releasing time period of the two second driving cylinders 54, and a smooth section is formed. In the slippage driving mechanism 50, the rolling pressure of the second roller 30 on the strip 40 can be changed by only periodically adjusting the synchronous action of the two hydraulic cylinders and controlling the movement stroke and the acting force of the hydraulic cylinders, so that different pattern depths can be obtained, and the lengths of the embossed section and the smooth section can be controlled, the slippage driving mechanism is simple to operate and easy to implement, and compared with the first embodiment of the slippage driving mechanism 50, the second roller 30 can not only apply large rolling pressure, but also has stable operation process because the two hydraulic cylinders respectively arranged at the two sides of the second roller 30 synchronously drive the second roller 30 to act, and the rolled patterns have the same depth in the whole width direction of the strip 40, so that the pattern rolling precision is improved.

Alternatively, in a first embodiment of slip control system 60, as shown in fig. 1, slip control system 60 includes a controller, a pressure sensor electrically connected to the controller, and a stop member 62 for adjustably mounting the pressure sensor. The stop member 62 is attached to the mounting frame 10 and is positioned between the first roller 20 and the second roller 30. The pressure sensor is connected to the end of the stop member 62 and faces the second roller 30 for abutment with the first slide plate 53 or the second slide plate 56. The sliding drive mechanism 50 and the rotating drive mechanism are connected to the controller, respectively. When the device works, the first sliding plate 53 or the second sliding plate 56 slides and then presses against the pressure sensor, the pressure sensor detects the rolling pressure of the second roller 30 on the strip 40, the pressure value is fed back to the controller, and the controller correspondingly controls the progress of the hydraulic oil cylinder so as to control the movement of the second roller 30. In this embodiment, by controlling the pressure of the second roller 30 on the strip 40, the depth of the pattern of the embossed section can be controlled; by controlling the duration of the second roll 30 depression and the duration of the non-contact, the length of the embossed and smooth sections on the strip 40 can be controlled; when the pressure sensor reaches a set value, the hydraulic oil cylinder is controlled by the controller to stop moving, the current pressure is kept, and the patterns with corresponding depths can be rolled on the surface of the strip through the extrusion force of the first roller 20 and the second roller 30 on the strip.

In this alternative, the limiting member 62 includes a mounting support fixed to the inner side of the first vertical plate 12 or the second vertical plate 13, an adjusting screw threadedly connected to the mounting support, and a limiting block connected to the end of the adjusting screw, and the pressure sensor is mounted on the limiting block. Preferably, the number of the position-limiting members 62 is two, two sets of the position-limiting members 62 are respectively arranged at two ends of the second roller 30, and one pressure sensor is connected to each set of the position-limiting members 62. The limiting components 62 and the pressure sensors on the two sides can detect and ensure that the stress of the contact surfaces of the second roller 30 and the first roller 20 and the strip 40 is consistent, so that the strip can be enabled to move forwards in a flat and straight line without deviation, the depth of patterns on the surface of the strip in the width direction is kept consistent, the pattern rolling quality is further improved, and when the readings of the pressure sensors on the two sides are inconsistent, the pressure on the two sides of the second roller 30 is not equal, and the patterns can be kept consistent by adjusting the adjusting screw rods on the corresponding sides.

Alternatively, in a second embodiment of the slip control system 60, not shown, the slip control system 60 includes a controller and a displacement sensor electrically connected to the controller. The displacement sensor is attached to the mounting frame 10 and is located between the first roll 20 and the second roll 30. The sliding drive mechanism 50 and the rotating drive mechanism are connected to the controller, respectively. During working, the displacement sensor monitors the displacement of the second roller 30 and feeds the displacement back to the controller, and the controller correspondingly controls the progress of the hydraulic oil cylinder according to the displacement so as to control the movement of the second roller 30. In this embodiment, by controlling the pressure of the second roller 30 on the strip 40, the depth of the pattern of the embossed section can be controlled; by controlling the duration of the second roll 30 depression and the duration of the non-contact, the length of the embossed and smooth sections on the strip 40 can be controlled; when the displacement sensor reaches a set value, the controller controls the hydraulic oil cylinder to stop moving, the current pressure is kept, and the strip is extruded by the first roller 20 and the second roller 30 to roll patterns on the surface of the strip. Preferably, in the second embodiment of the sliding driving mechanism 50, the number of the displacement sensors is two, the two sets of displacement sensors are respectively disposed on two sides of the second roller 30 and are electrically connected to the controller, the two sets of displacement sensors can detect and ensure that the contact surfaces of the second roller 30 and the first roller 20 and the strip 40 are stressed uniformly, so as to ensure that the strip can move forward smoothly and linearly without deviation, and the depth of the patterns on the surface of the strip in the width direction is kept uniform, thereby improving the rolling quality of the patterns, and when the readings of the displacement sensors on two sides are not uniform, the pressures on two sides of the second roller 30 are not equal, and the second driving cylinders 54 on corresponding sides can be adjusted to keep uniform.

Alternatively, in a third embodiment of the slip control system 60, not shown, both the first drive cylinder 51 and the second drive cylinder 54 are hydraulic rams. The slip control system 60 includes a controller, a hydraulic circuit connected to the hydraulic cylinder for controlling the operation thereof, and a servo valve connected to the hydraulic circuit, the servo valve being connected to the controller for measuring the flow rate of the lubricating oil in the hydraulic circuit. The sliding drive mechanism 50 and the rotating drive mechanism are connected to the controller, respectively. When the hydraulic oil pressure measuring device works, the servo valve measures the flow rate of lubricating oil in the hydraulic circuit, and then the extension amount of the hydraulic oil cylinder and the pressure applied by the second roller 30 are obtained according to the relation between the flow rate of the lubricating oil and the pressure of the circuit.

Optionally, the rotation driving mechanism includes a driving motor, a speed reducer connected to the driving motor, and a coupler connected to the speed reducer, and the coupler is connected to the first mounting shaft 21 or the second mounting shaft 31 that is correspondingly disposed. In this alternative, the first mounting shaft 21 and the second mounting shaft 31 are respectively connected to a set of rotation driving mechanisms, or the first mounting shaft 21 and the second mounting shaft 31 are connected to the same set of rotation driving mechanisms, the output end of the speed reducer is respectively connected to two couplers through the connecting mechanism, and the two couplers are respectively connected to the first mounting shaft 21 and the second mounting shaft 31 to synchronously drive the first roller 20 and the second roller 30. Or, the rotary driving mechanism includes driving motor, the speed reducer that links to each other with driving motor, the initiative drive gear that links to each other with the speed reducer, and with the driven drive gear of initiative drive gear external toothing, initiative drive gear installs on the excircle of second installation axle 31, driven drive gear installs on the excircle of first installation axle 21.

When the embossing pattern forming unit of the present invention is used to roll a strip, examples are as follows:

example 1:

product type: the total length of the single high-efficiency heat exchange tube is 6.0m, the length of the external thread of the rolling section is required to be 5.6m, the lengths of the smooth sections at two ends are respectively 0.2m, and the pattern depth of the rolling section is 0.15 mm.

A combination of a first nip roller 20 being a smooth surface roller and a second nip roller 30 being an embossing roller is used. The operation of the servo motor is controlled by the PLC and the touch screen, when the linear speed of the embossing roller is set to be 2.0m/min, namely the advancing speed of the strip is 2.0m/min, and the set values of the limiting component and the pressure sensor are 15 tons, so that the extrusion time and the loosening time of the roller can be determined. And (3) starting a motor to push a hydraulic oil cylinder, moving the embossing roller upwards to tightly push the smooth surface roller, applying pressing force to the strip, stopping the hydraulic oil cylinder and keeping the current pressure when the set pressure is reached, wherein the pressure duration is 2.8min, so that the rolling of the patterns on the surface of the strip is realized, and the pattern depth is 0.15 mm. And then stopping the motor, relieving the pressure by the hydraulic oil cylinder, moving the embossing roller downwards to be separated from the strip, forming a smooth surface section without patterns on the surface of the strip, and keeping the time for 0.2 min. The above operations are repeated all the time thereafter to produce the desired strip. The heat exchange high-efficiency tube with the middle rolling pattern section and the two side smooth surface sections is produced through a subsequent forming unit, a welding unit, annealing treatment, pre-sizing, secondary sizing and the like of a production line.

Example 2:

product type: the total length of the single high-efficiency heat exchange tube is 6.0m, and continuous internal threads are required on the inner wall of the tube.

A combination of a first nip roller 20 being an embossing roller and a second nip roller 30 being a smooth roller is used. The operation of a servo motor is controlled by a PLC and a touch screen, when the linear speed of the embossing roller is set to be 2.0m/min, namely the advancing speed of the strip is 2.0m/min, the set values of a limiting component and a pressure sensor are 15 tons, when the set pressure is reached, a hydraulic oil cylinder stops working and maintains the current pressure, the rolling of the patterns on the surface of the strip is realized, and the depth of the patterns is 0.15mm, so that the strip with the requirements can be produced. The high-efficiency heat exchange tube with the threaded inner wall of the tube is produced through a subsequent forming unit and a welding unit of a production line, annealing treatment, diameter presetting, secondary sizing and the like.

Example 3:

product type: the total length of the single high-efficiency heat exchange tube is 6.0m, the length of the external thread of the rolling section is required to be 5.6m, the external thread is divided into two directions, the lengths of the smooth sections at two ends are respectively 0.2m, and the pattern depth of the rolling section is 0.15 mm.

A combination of a first nip roller 20 being a smooth surface roller and a second nip roller 30 being an embossing roller is used. Meanwhile, two groups of racks are arranged in a front-back manner, the embossing rollers are respectively arranged at 45 degrees and 135 degrees, and the two groups of embossing rollers are connected with a motor through a worm gear reducer. The operation of the servo motor is controlled through the PLC and the touch screen, and meanwhile, the PLC is used for controlling the switch of the hydraulic station, so that the two groups of embossing rollers are respectively controlled, and the continuity of patterns is realized. When the linear speed of the embossing roll is set to be 2.0m/min, namely the advancing speed of the strip is 2.0m/min, the set values of the limiting component and the pressure sensor are 15 tons, so that the extrusion time and the release time of the roll can be determined. And (3) starting a motor to push a hydraulic oil cylinder of the frame 1, moving the second roller upwards to tightly push the first roller, applying pressing force to the strip, stopping the hydraulic oil cylinder and keeping the current pressure when the set pressure is reached, wherein the pressure duration is 2.8min, so that the rolling of the patterns on the surface of the strip is realized, and the pattern depth is 0.15 mm. And then the motor stops running, the hydraulic oil cylinder releases pressure, the second roller moves downwards to be separated from the strip, no pattern is formed on the surface of the strip, a smooth surface section is formed, and the duration is 0.2 min. And the action of the hydraulic oil station of the frame 2 is delayed for 0.2min relative to the frame 1 so as to ensure that the front and back pattern sections and the smooth surface section are coincided: the hydraulic oil cylinder of the frame 1 is pressurized, the hydraulic oil cylinder of the frame 2 is depressurized at the moment, and the hydraulic oil cylinder of the frame 2 is pressurized after 0.2 min; at the moment, the hydraulic oil cylinders of the frame 1 and the frame 2 are kept for 2.8 min; and the hydraulic oil cylinder of the frame 1 releases pressure, and the hydraulic oil cylinder of the frame 2 releases pressure after 0.2 min. The above operations are repeated all the time thereafter to produce the desired strip. The heat exchange high-efficiency tube with the middle rolling pattern section and the smooth surface sections at two sides is produced through a subsequent forming unit, a welding unit, annealing treatment, diameter presetting, secondary sizing and the like of a production line.

Referring to fig. 1 to 6, a preferred embodiment of the present invention also provides a welded pipe production system including: the device comprises an uncoiler, an embossing line forming unit, a drum forming unit and a welding unit, wherein the embossing line forming unit is connected with the uncoiler, the drum forming unit is connected with the embossing line forming unit, and the welding unit is connected with the drum forming unit. When the device works, a strip with patterns is produced by the embossing pattern forming unit, then the strip enters the winding drum forming unit, the strip is gradually formed into a tube blank by the combination of the rollers, then the tube blank enters the welding chamber of the welding unit, the heat exchange welded tube is prepared by adopting a laser welding or tungsten electrode argon arc welding method, and finally the qualified high-efficiency heat exchange welded tube is produced by subsequent sizing, annealing, online detection, offline detection, sizing and the like.

In the welded pipe production system, the automatic continuous production of the strip 40 with the patterns on the wall surface can be realized, the lengths of the embossing section and the smooth surface section on the strip 40 are adjustable, and the pattern depth of the embossing section is controllable, so that the tightness of expansion joint of the heat exchange pipe prepared and formed by the strip and a pipe plate in the later use process is ensured, the problems of unqualified leakage inspection and the like of the continuous pattern welded pipe are avoided, the production cost of the efficient heat exchange pipe with the patterns on the wall surface is obviously reduced, and the popularization and the use of the efficient heat exchange pipe are promoted; the welded tube production system is flexible to use and high in adaptability, and can realize the on-line continuous production of the high-efficiency heat exchange tube, so that the production efficiency and the production quality of the high-efficiency heat exchange tube are obviously improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.