Automatic welded pipe straightening device

Abstract

The utility model provides an automatic welded pipe straightening device which comprises a first straightening unit and a second straightening unit, and the first straightening unit and the second straightening unit are correspondingly arranged. The first straightening unit comprises a workbench, a plurality of first straightening rollers and a plurality of second straightening rollers, the first straightening rollers and the second straightening rollers are located on the two sides of the upper portion of the workbench respectively, and the first straightening rollers and the second straightening rollers are connected with the workbench. The second straightening unit comprises a sliding platform, a moving table, a rotating motor, a connecting rod, an expansion rod and at least two fixing frames, and the moving table is located on the upper portion of the sliding platform and slidably connected with the sliding platform. The welding pipe material slowly passes through the position between the first straightening roller and the second straightening roller, so that the outer portion of the welding pipe is straightened, meanwhile, the rotating motor rotates to control the connecting rod and the expansion and contraction rod to rotate, the expansion and contraction rod rotates in the welding pipe material and slowly stretches into the welding pipe material, and therefore deformation in the welding pipe material is corrected.

Description

Technical Field

[0001] The utility model relates to a straightening device, in particular to an automatic welded pipe straightening device, belonging to the technical field of welded pipe straightening. Background Art

[0002] Welded pipes are pipes made by forming and welding steel plates or steel strips through roller machines, electric welders and other equipment. They are used to transport liquids, gases, solid particles and other substances. Welded pipes are commonly used in construction, engineering, petrochemicals, water supply, heating and other fields. During the production process, welded pipes are easily deformed and twisted due to the influence of external forces and thermal deformation, resulting in unstable pipe quality. Straightening refers to adjusting the welded pipe through mechanical or heat treatment methods to restore it to its original straight shape. After straightening, the welded pipe can improve the appearance quality, reduce the error and difficulty during docking, improve the pressure resistance and corrosion resistance, and ensure the safe and stable operation of the pipeline.

[0003] The Chinese invention patent with the announcement number CN113441571A discloses a welded pipe straightening device, which specifically relates to the technical field of straightening devices, including a base and a limit plate, wherein the bottom of the limit plate has a fixed groove located on the surface of the base, the inner wall of the fixed groove is fixedly installed with the side of the bottom end of the welded pipe body, one side of the welded pipe body has a straightening push plate fixedly installed at the top of the base, the bottom of the straightening push plate has a slide groove fixedly opened at the top of the base, and the top of the slide groove has a push rod assembly fixedly installed at one end of the straightening push plate; the welded pipe straightening device uses the activation of the hydraulic rod to push the telescopic rod to move, so that the telescopic rod can push the push rod assembly to move, and uses the first mounting block, the second mounting block, and the third mounting block to push the straightening push plate to move, and then the welded pipe is clamped and straightened, which greatly increases its practicality, avoids the waste of material resources, and meets the production needs. However, the invention can only straighten the outer bending of the welded pipe. If a part of the inner side of the welded pipe to be straightened is concave, the invention cannot effectively correct this deformation. Utility Model Content

[0004] Based on the above background, the purpose of the utility model is to provide an automated welded pipe straightening device which can straighten both the inside and outside of the welded pipe and is easy to operate, so as to solve the problems described in the background technology.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] An automated welded pipe straightening device comprises a first straightening unit and a second straightening unit, wherein the first straightening unit is arranged corresponding to the second straightening unit;

[0007] The first straightening unit comprises a workbench, a plurality of first straightening rollers and a plurality of second straightening rollers, wherein the plurality of first straightening rollers and the plurality of second straightening rollers are respectively located on both sides of the upper portion of the workbench, and the first straightening rollers and the second straightening rollers are both connected to the workbench;

[0008] The second straightening unit includes a sliding platform, a movable platform, a rotating motor, a connecting rod, an expansion and contraction rod and at least two fixed frames. The movable platform is located on the upper part of the sliding platform, and the movable platform is slidably connected to the sliding platform. A rotating motor is arranged at one end of the upper part of the movable platform away from the first straightening unit, and the rotating motor is connected to the movable platform. A connecting rod is arranged at the output end of the rotating motor, and the connecting rod is connected to the rotating motor. An expansion and contraction rod is arranged at one end of the connecting rod away from the rotating motor, and the expansion and contraction rod is connected to the connecting rod. At least two fixed frames are arranged on the outside of the connecting rod, and the fixed frames are rotatably matched with the connecting rod.

[0009] The welded pipe material to be straightened passes between the first straightening roller and the second straightening roller on the workbench. The first straightening roller and the second straightening roller can eliminate defects such as bending and twisting of the welded pipe material during the processing, so that the welded pipe material meets the specified straightness requirements.

[0010] Before the welded pipe material passes through the first straightening roller and the second straightening roller, the mobile platform will move through the sliding platform until the expansion and contraction rod reaches between the first straightening roller and the second straightening roller, and extends one end into the welded pipe material. The expansion and contraction degree of the expansion and contraction rod changes according to the inner diameter of the welded pipe material until the expansion and contraction rod fits the inner wall of the welded pipe material. When the welded pipe material passes between the first straightening roller and the second straightening roller little by little, the rotating motor rotates to control the connection rod and the expansion and contraction rod to rotate, so that the expansion and contraction rod rotates inside the welded pipe material and slowly extends, thereby correcting the deformation inside the welded pipe material. During this period, the fixed frame can effectively prevent the expansion and contraction rod from offsetting or shaking, ensuring that the welded pipe material can be correctly straightened to achieve the expected straightness requirements.

[0011] Preferably, the workbench is provided with a placement cavity at the lower part of the first straightening roller and the second straightening roller, a first channel is provided between the workbench and the first straightening roller, a second channel is provided between the workbench and the second straightening roller, both the first channel and the second channel are connected with the placement cavity, a first transmission rod is arranged in the first channel, one end of the first transmission rod is connected with the first straightening roller, the other end of the first transmission rod is located inside the placement cavity, the first transmission rod is rotatably matched with the workbench through the first channel, several first transmission rods located inside the placement cavity are sleeved with a first belt, the first belt is connected with several first transmission rods, a second transmission rod is arranged in the second channel, one end of the second transmission rod is connected with the second straightening roller, the other end of the second transmission rod is located inside the placement cavity, the second transmission rod is rotatably matched with the workbench through the second channel, several second transmission rods located inside the placement cavity are sleeved with a second belt, and the second belt is connected with several second transmission rods.

[0012] The first straightening roller and the second straightening roller are connected to one end of the first transmission rod and the second transmission rod respectively, and then the other ends of the first transmission rod and the second transmission rod reach the placement cavity through the first channel and the second channel respectively, and the first belt is connected to several first transmission rods inside the placement cavity, so that several first straightening rollers can rotate synchronously, and the second belt is connected to several second transmission rods in the placement cavity, so that several second straightening rollers can rotate synchronously.

[0013] Preferably, a first rotating machine and a second rotating machine are arranged in the placement cavity, the first rotating machine and the second rotating machine are both connected to the workbench, the output end of the first rotating machine is connected to the first belt, and the output end of the second rotating machine is connected to the second belt.

[0014] The first rotating machine and the second rotating machine provide power for the rotation of the first straightening roller and the second straightening roller respectively.

[0015] Preferably, bearings are arranged between the connecting rod and the fixing frame, and the bearings are connected to the connecting rod and the fixing frame.

[0016] The bearing can reduce energy loss, improve the transmission efficiency of the connecting rod and the overall working stability of the device.

[0017] Preferably, an electric slide rail is arranged on the upper part of the sliding platform, the electric slide rail is connected to the sliding platform, and the sliding end of the electric slide rail is connected to the moving platform.

[0018] The electric slide rail can make the moving table slide smoothly and evenly in a specific direction on the sliding platform.

[0019] Preferably, a cover is provided at one side of the workbench, and the cover has two states, open and closed, relative to the placement cavity, and the cover is connected to the workbench.

[0020] When the cover is in an open state relative to the placement cavity, the operator can easily adjust, repair and clean the components inside the placement cavity. When the cover is in a closed state relative to the placement cavity, it can effectively prevent external impurities from entering the placement cavity, ensuring the cleanliness and safety of the internal environment of the placement cavity.

[0021] Preferably, the cover body is provided with a heat dissipation port.

[0022] The heat dissipation vents can accelerate the conduction and dissipation of heat inside the cavity, preventing internal components from being damaged by overheating.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] The utility model discloses an automatic welded pipe straightening device. The welded pipe material slowly passes between a first straightening roller and a second straightening roller so that the outside of the welded pipe is straightened. At the same time, a rotary motor rotates to control the rotation of a connecting rod and an expansion rod so that the expansion rod rotates inside the welded pipe material and slowly extends therein, thereby correcting the deformation inside the welded pipe material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of the utility model automatic welded pipe straightening device;

[0027] Figure 2 This is a side view of the automatic welded pipe straightening device of the utility model;

[0028] Figure 3 The utility model is a schematic diagram of the internal structure of a workbench of an automatic welded pipe straightening device.

[0029] In the figure: 1. first straightening unit; 101. workbench; 102. first straightening roller; 103. second straightening roller; 2. second straightening unit; 201. sliding platform; 202. moving platform; 203. rotating motor; 204. connecting rod; 205. expansion rod; 206. fixed frame; 3. placement cavity; 4. first transmission rod; 5. first belt; 6. second transmission rod; 7. second belt; 8. first rotating machine; 9. second rotating machine; 10. bearing; 11. electric slide rail; 12. cover; 13. heat dissipation port. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0031] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0032] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0033] like Figure 1 and Figure 2 As shown, an automatic welded pipe straightening device includes a first straightening unit 1 and a second straightening unit 2, and the first straightening unit 1 and the second straightening unit 2 are arranged correspondingly.

[0034] The first straightening unit 1 includes a workbench 101, several first straightening rollers 102 and several second straightening rollers 103, the several first straightening rollers 102 and the several second straightening rollers 103 are respectively located on both sides of the upper part of the workbench 101, and the first straightening rollers 102 and the second straightening rollers 103 are both connected to the workbench 101.

[0035] like Figure 3 As shown, the workbench 101 is located at the lower part of the first straightening roller 102 and the second straightening roller 103 to open a placement cavity 3, a first channel is opened between the workbench 101 and the first straightening roller 102, and a second channel is opened between the workbench 101 and the second straightening roller 103, and both the first channel and the second channel are connected to the placement cavity 3.

[0036] A first transmission rod 4 is arranged in the first channel, one end of the first transmission rod 4 is connected to the first straightening roller 102, the other end of the first transmission rod 4 is located inside the placement cavity 3, and the first transmission rod 4 is rotatably matched with the workbench 101 through the first channel.

[0037] Several first transmission rods 4 located inside the placement cavity 3 are sleeved with a first belt 5, and the first belt 5 is connected to several first transmission rods 4. A second transmission rod 6 is arranged in the second channel, and one end of the second transmission rod 6 is connected to the second straightening roller 103. The other end of the second transmission rod 6 is located inside the placement cavity 3, and the second transmission rod 6 is rotatably matched with the workbench 101 through the second channel. Several second transmission rods 6 located inside the placement cavity 3 are sleeved with a second belt 7, and the second belt 7 is connected to several second transmission rods 6.

[0038] A first rotating machine 8 and a second rotating machine 9 are arranged in the placement chamber 3 . The first rotating machine 8 and the second rotating machine 9 are both connected to the workbench 101 . The output end of the first rotating machine 8 is connected to the first belt 5 , and the output end of the second rotating machine 9 is connected to the second belt 7 .

[0039] The welded pipe material to be straightened passes between the first straightening roller 102 and the second straightening roller 103 on the workbench 101, and the first straightening roller 102 and the second straightening roller 103 are respectively connected to one end of the first transmission rod 4 and the second transmission rod 6, and then the other ends of the first transmission rod 4 and the second transmission rod 6 are respectively passed through the first channel and the second channel to reach the placement cavity 3, and the first belt 5 is connected to several first transmission rods 4 inside the placement cavity 3, so that several first straightening rollers 102 can rotate synchronously, and the second belt 7 is connected to several second transmission rods 6 in the placement cavity 3, so that several second straightening rollers 103 can rotate synchronously, wherein the first rotating machine 8 and the second rotating machine 9 provide power for the rotation of the first straightening roller 102 and the second straightening roller 103 respectively, so that the first straightening roller 102 and the second straightening roller 103 can eliminate the bending, twisting and other defects of the welded pipe material generated during the processing, so that the welded pipe material can meet the specified straightness requirements.

[0040] A cover 12 is disposed on one side of the workbench 101 . The cover 12 has two states, namely, open and closed, relative to the placement cavity 3 . The cover 12 is connected to the workbench 101 .

[0041] When the cover 12 is in an open state relative to the placement cavity 3, the operator can easily adjust, repair and clean the components inside the placement cavity 3, and when the cover 12 is in a closed state relative to the placement cavity 3, it can effectively prevent external impurities from entering the placement cavity 3, ensuring the cleanliness and safety of the internal environment of the placement cavity 3. The cover 12 is provided with a heat dissipation port 13, which can accelerate the conduction and dissipation of heat inside the placement cavity 3, and prevent the internal components from being damaged due to overheating.

[0042] The second straightening unit 2 includes a sliding platform 201, a moving platform 202, a rotating motor 203, a connecting rod 204, an expansion rod 205 and at least two fixed frames 206. The moving platform 202 is located on the upper part of the sliding platform 201. The sliding platform 201 is provided with an electric slide rail 11, which is connected to the sliding platform 201, and the sliding end of the electric slide rail 11 is connected to the moving platform 202. The electric slide rail 11 can make the moving platform 202 slide smoothly and evenly along a specific direction on the sliding platform 201.

[0043] A rotating motor 203 is arranged at one end of the upper part of the movable platform 202 away from the first correction unit, and the rotating motor 203 is connected to the movable platform 202. A connecting rod 204 is arranged at the output end of the rotating motor 203, and the connecting rod 204 is connected to the rotating motor 203. An expansion rod is arranged at one end of the connecting rod 204 away from the rotating motor 203, and the expansion rod is connected to the connecting rod 204. At least two fixed frames 206 are arranged on the outer side of the connecting rod 204, and the fixed frames 206 are rotatably matched with the connecting rod 204.

[0044] Before the welded pipe material passes through the first straightening roller 102 and the second straightening roller 103, the movable platform 202 will move through the sliding platform 201 until the expansion rod reaches between the first straightening roller 102 and the second straightening roller 103 and extends one end into the welded pipe material. The expansion rod changes the expansion and contraction degree of the expansion rod according to the inner diameter of the welded pipe material until the expansion rod fits against the inner wall of the welded pipe material.

[0045] When the welded pipe material passes through the first straightening roller 102 and the second straightening roller 103 little by little, the rotating motor 203 rotates and controls the connecting rod 204 and the expansion rod to rotate, so that the expansion rod rotates inside the welded pipe material and slowly extends into the welded pipe material, thereby correcting the deformation inside the welded pipe material. During this period, the fixed frame 206 can effectively prevent the expansion rod from deflecting or shaking, ensuring that the welded pipe material can be correctly straightened to meet the expected straightness requirements. A bearing 10 is arranged between the connecting rod 204 and the fixed frame 206, and the bearing 10 can reduce energy loss, improve the transmission efficiency of the connecting rod 204 and the overall working stability of the device.

[0046] The operating steps of the automatic welded pipe straightening device of the utility model are:

[0047] First, place the welded pipe material on one end of the upper part of the workbench 101, control the movable platform 202 to move on the upper part of the sliding platform 201, until the expansion rod reaches between the first straightening roller 102 and the second straightening roller 103, and extends one end into the welded pipe material, and changes the expansion and contraction degree of the expansion rod according to the inner diameter of the welded pipe material until the expansion rod fits with the inner wall of the welded pipe material.

[0048] Start the rotating motor 203, the first rotating machine 8 and the second rotating machine 9 to rotate the expansion rod, the first straightening roller 102 and the second straightening roller 103, control the welded pipe material to slowly pass between the first straightening roller 102 and the second straightening roller 103, and straighten the bent part of the welded pipe. At the same time, the expansion rod rotates inside the welded pipe material and slowly extends into it, thereby correcting the deformation inside the welded pipe material.

[0049] After the straightening of the welded pipe is completed, the movable platform 202 is controlled to move on the upper part of the sliding platform 201 until the expansion rod leaves between the first straightening roller 102 and the second straightening roller 103, and the expansion rod retracts to the original state, so that the welded pipe material can be removed.

[0050] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An automatic welded pipe straightening device, characterized in that: The automatic welded pipe straightening device comprises a first straightening unit (1) and a second straightening unit (2), wherein the first straightening unit (1) and the second straightening unit (2) are arranged correspondingly; The first straightening unit (1) comprises a workbench (101), a plurality of first straightening rollers (102) and a plurality of second straightening rollers (103), wherein the plurality of first straightening rollers (102) and the plurality of second straightening rollers (103) are respectively located on both sides of the upper part of the workbench (101), and the first straightening rollers (102) and the second straightening rollers (103) are both connected to the workbench (101); The second straightening unit (2) comprises a sliding platform (201), a moving platform (202), a rotating motor (203), a connecting rod (204), an expansion rod (205) and at least two fixed frames (206), wherein the moving platform (202) is located on the upper part of the sliding platform (201), the moving platform (202) is slidably connected to the sliding platform (201), and a rotating motor (203) is arranged at one end of the upper part of the moving platform (202) away from the first straightening unit, and the rotating motor (203) The rotating motor (203) is connected to the moving platform (202), a connecting rod (204) is arranged at the output end of the rotating motor (203), the connecting rod (204) is connected to the rotating motor (203), an expansion rod is arranged at one end of the connecting rod (204) away from the rotating motor (203), the expansion rod is connected to the connecting rod (204), at least two fixing frames (206) are arranged outside the connecting rod (204), and the fixing frames (206) are rotatably matched with the connecting rod (204).

2. The automatic welded pipe straightening device according to claim 1 is characterized in that: The workbench (101) is located at the bottom of the first straightening roller (102) and the second straightening roller (103), and a placement cavity (3) is provided. A first channel is provided between the workbench (101) and the first straightening roller (102), and a second channel is provided between the workbench (101) and the second straightening roller (103). Both the first channel and the second channel are connected to the placement cavity (3). A first transmission rod (4) is provided in the first channel. One end of the first transmission rod (4) is connected to the first straightening roller (102), and the other end of the first transmission rod (4) is located inside the placement cavity (3). The first transmission rod (4) is connected to the workbench (101) through the first channel. 01) rotationally matched, a plurality of first transmission rods (4) located inside the placement cavity (3) are sleeved with a first belt (5), the first belt (5) is connected to a plurality of first transmission rods (4), a second transmission rod (6) is arranged in the second channel, one end of the second transmission rod (6) is connected to a second straightening roller (103), the other end of the second transmission rod (6) is located inside the placement cavity (3), the second transmission rod (6) is rotationally matched with the workbench (101) through the second channel, a plurality of second transmission rods (6) located inside the placement cavity (3) are sleeved with a second belt (7), the second belt (7) is connected to a plurality of second transmission rods (6).

3. The automatic welded pipe straightening device according to claim 2 is characterized in that: A first rotating machine (8) and a second rotating machine (9) are arranged in the placement cavity (3); the first rotating machine (8) and the second rotating machine (9) are both connected to the workbench (101); the output end of the first rotating machine (8) is connected to the first belt (5), and the output end of the second rotating machine (9) is connected to the second belt (7).

4. The automatic welded pipe straightening device according to claim 1 is characterized in that: A bearing (10) is arranged between the connecting rod (204) and the fixing frame (206), and the bearing (10) is connected to the connecting rod (204) and the fixing frame (206).

5. The automatic welded pipe straightening device according to claim 1 is characterized in that: An electric slide rail (11) is arranged on the upper part of the sliding platform (201); the electric slide rail (11) is connected to the sliding platform (201); and the sliding end of the electric slide rail (11) is connected to the moving platform (202).

6. The automatic welded pipe straightening device according to claim 3 is characterized in that: A cover body (12) is arranged on one side of the workbench (101); the cover body (12) has two states, open and closed, relative to the placement cavity (3); and the cover body (12) is connected to the workbench (101).

7. The automatic welded pipe straightening device according to claim 6 is characterized in that: The cover body (12) is provided with a heat dissipation port (13).

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