Welded pipe centering device of cold bending product

Abstract

The utility model relates to the technical field of steel cold-rolled product production, and discloses a welded pipe centering device of a cold-bent product, which comprises a conveying rack and a sliding rod, the outer surface of the sliding rod is connected with a second mounting seat in a sliding manner, and one surface of the second mounting seat, which is close to the conveying rack, is fixedly provided with a horizontal transverse movement limiting component through a bolt; a probe holding assembly is arranged on the face, close to the conveying rack, of the horizontal transverse movement limiting assembly, and the horizontal transverse movement limiting assembly comprises a transverse movement plate and a rotating rod which are fixedly installed on the face, close to the conveying rack, of the second installation base. According to the welded pipe centering device, the hand wheel rotates to drive the rotating rod, the bevel gear, the connecting shaft, the crank and the limiting rod to move, the two symmetrically-distributed structures can limit the two sides of the welded pipe in a balanced mode, the limiting effect can be achieved, the situation that the welded pipe deviates due to uneven stress on the single side is avoided, flexible adjustment can be conducted according to the actual size of the welded pipe, and the welding efficiency is improved. The diversity of the whole device is improved, and flaw detection structure errors are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-rolled steel product production, in particular to a welded pipe centering device for cold-bent products. Background Art

[0002] In the complex industrial process of cold-rolled production of some products, product quality control plays a vital role. This production process involves multiple links, among which the step where the steel strip enters the welding process is particularly critical. However, in actual operation, the position of the steel strip is very likely to deviate when entering the welding process. The reasons for this deviation are multifaceted, which may be due to the vibration of the steel strip during the early transmission process, the slight error of the conveying equipment, or the inaccuracy of the connection between the links in the production line.

[0003] When the position of the steel strip deviates, it will have a serious impact on the welding process. More importantly, it will have a significant impact on the quality of the weld. The narrower weld part may be unstable due to insufficient welding energy, which may lead to hidden dangers of cold welding. In order to solve this problem and ensure the quality of welding, a centering device is generally used. The centering device plays an indispensable role in the entire cold bending and rolling production process. It can monitor and accurately adjust the position of the steel strip in real time through precise mechanical structure, advanced sensor technology and intelligent control system, thereby effectively avoiding position deviation of the steel strip during welding, ensuring the quality and stability of the weld, and laying a good foundation for subsequent production processes.

[0004] The Chinese utility model patent with announcement number CN212989243U specifically discloses a titanium alloy welded pipe flaw detection device. This titanium alloy welded pipe flaw detection device can effectively solve the problems of limited flaw detection range and missed detection of titanium pipes, realize automatic flaw detection, and improve flaw detection efficiency.

[0005] The titanium alloy welded pipe flaw detection device constructed in this way does not have a product limiting structure, which can easily cause the product to move during the centering and flaw detection process, resulting in errors in the flaw detection results. In addition, the probe buffer structure is not designed, which can easily cause the impact force between the welded pipe and the probe when they come into contact, causing damage to the probe, resulting in a shorter service life. Summary of the Invention

[0006] In view of the problems existing in the production process of existing welded pipes, the purpose of the utility model is to provide a welded pipe centering device for cold-bent products to overcome the problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the present invention provides a welded pipe centering device for cold-bent products, comprising a conveyor frame and a slide rod, wherein the outer surface of the slide rod is slidably connected to a second mounting seat, a horizontal lateral movement limit assembly is fixedly installed on a side of the second mounting seat close to the conveyor frame by bolts, and a probe holding assembly is provided on a side of the horizontal lateral movement limit assembly close to the conveyor frame;

[0008] The horizontal lateral movement limit assembly includes a lateral movement plate and a rotating rod fixedly installed on a side of the second mounting seat close to the conveyor frame, a first bevel gear fixedly installed on the outer surface of the rotating rod, a second bevel gear meshed with the outer surface of the first bevel gear, a connecting shaft fixedly installed on the inner surface of the second bevel gear, a crank fixedly installed on the other end of the connecting shaft away from the second bevel gear, and a limiting rod fixedly installed on the other end of the crank away from the connecting shaft.

[0009] Preferably, the support frame is fixedly mounted on the conveyor frame, a support rod is fixedly mounted on the outer surface of the support frame, a top plate is fixedly mounted on the other end of the support frame and the support rod away from the conveyor frame, and the cross-section of the support frame and the support rod is a "triangular" structure.

[0010] Through the above technical solution, when assembling the equipment, the support frame is fixed on the conveyor frame, and then the support rod is installed on the support frame. Finally, the top plate is installed on the top of the support frame and the support rod. The triangular structure can ensure the stability of the top plate and provide stable support for the subsequent components installed on the top plate.

[0011] Preferably, a first mounting seat is fixedly mounted on the other end of the top plate away from the conveyor frame, and a sliding rod is fixedly mounted on the inner surface of the first mounting seat.

[0012] Through the above technical solution, after the top plate is installed, the first mounting seat is fixed at the corresponding position of the top plate, and then the sliding rod is installed on the inner surface of the first mounting seat to ensure that the sliding rod is installed firmly and horizontally. The first mounting seat provides an installation position for the sliding rod, and the sliding rod serves as a track for the subsequent sliding of the second mounting seat. This design enables the second mounting seat to slide smoothly on the sliding rod, thereby driving the horizontal lateral limit assembly and the probe holding assembly to adjust in the horizontal direction.

[0013] Preferably, a positioning seat is fixedly installed on one side of the transverse plate away from the conveyor frame, and a rotating rod is rotatably installed on the inner surface of the positioning seat, and a hand wheel is fixedly installed on the other end of the rotating rod away from the positioning seat, and the first bevel gear, the second bevel gear, the connecting shaft, the crank and the limit rod are provided in two identical ones, and the two first bevel gears, the second bevel gear, the connecting shaft, the crank and the limit rod are symmetrically distributed about the center line of the conveyor frame.

[0014] Through the above technical solution, the operator turns the handwheel, which drives the rotating rod to rotate, and the first bevel gear on the rotating rod rotates accordingly, and the second bevel gear meshing with the first bevel gear also rotates. The second bevel gear drives the crank to rotate through the connecting shaft, and then the limit rod rotates, thereby evenly limiting the weld pipe on both sides in the horizontal direction, avoiding the displacement of the weld pipe due to uneven force on one side.

[0015] Preferably, the probe holding assembly includes an air spring and a slider fixedly installed on a side of the transverse plate close to the conveyor frame, and a latch and a probe body are provided on the outer surface of the slider.

[0016] Furthermore, a fixed plate is fixedly installed on the other end of the air spring away from the transverse plate, and a groove running through the fixed plate and a plurality of slots distributed at equal intervals are provided on a side of the fixed plate close to the conveyor frame, and a limit seat is fixedly installed on a side of the fixed plate close to the transverse plate, and the slots are adapted to the pins.

[0017] Through the above technical solution, the air spring can provide a certain buffer for the probe body, reduce the damage to the probe caused by the impact force that may be generated when the welded pipe contacts the probe, extend the life of the probe, and improve its fit. In addition, the design of multiple slots allows the position of the probe body in the vertical direction to be flexibly adjusted to ensure that the ultrasonic wave emitted by the probe body passes through the center of the product weld. The limit seat and the pin cooperate to ensure the stability of the probe body during operation and prevent it from accidental displacement.

[0018] Preferably, the probe body is located on a side of the conveyor frame close to the second mounting seat, a sliding rod is fixedly mounted on the inner surface of the limiting seat, and a slider is slidably connected to the outer surface of the sliding rod.

[0019] Through the above technical solution, the design of the sliding rod and the slider allows the probe body to move flexibly within a certain range. During the transportation of the welded pipe, the probe body can better follow the position changes of the welded pipe.

[0020] Preferably, four of the grooves, slots, limiting seats, sliding rods, sliders, latches and probe bodies are equidistantly distributed and in one-to-one correspondence.

[0021] Through the above technical solution, four equidistantly distributed probe bodies can inspect welded pipes from more positions and angles. Compared with a single or a small number of probes, this layout can more comprehensively obtain the position information of the welded pipe during transportation, and can also reduce detection blind spots and improve centering accuracy.

[0022] Compared with the prior art, the welded pipe centering device for cold-bent products provided by the present invention has the following beneficial effects:

[0023] 1. The welded pipe centering device of this cold-bent product drives the rotating rod, bevel gear, connecting shaft, crank and limit rod to move by rotating the handwheel. The two symmetrically distributed structures can evenly limit the position of both sides of the welded pipe. This not only plays a limiting role to prevent the welded pipe from shifting due to uneven force on one side, but also can be flexibly adjusted according to the actual size of the welded pipe, thereby increasing the diversity of the overall device and avoiding structural errors caused by flaw detection.

[0024] 2. The weld pipe centering device of this cold-bent product uses an air spring to provide a buffer for the probe body, reducing damage to the probe caused by impact when the weld pipe contacts the probe, extending the probe life, and improving the fit between the probe and the weld pipe. The multiple slots and latches on the fixing plate allow the probe body to be flexibly adjusted in the vertical direction to ensure that the ultrasonic wave emitted by the probe passes through the center of the product weld. The limit seat and latch ensure the stability of the probe during operation and prevent accidental displacement. The design of the sliding rod and slider allows the probe body to move flexibly within a certain range, so that the probe can better follow the changes in the position of the weld pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the welded pipe centering device of the cold bending product of the utility model from a first perspective;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the welded pipe centering device of the cold-bending product of the utility model from a second perspective;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the top plate and the first mounting seat of the welded pipe centering device of the cold-bending product of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure from the first perspective of the horizontal lateral movement limit assembly of the welded pipe centering device of the cold bending product of the utility model;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure from a second perspective of the horizontal lateral movement limit assembly of the welded pipe centering device of the cold bending product of the present invention;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the probe holding assembly of the welded pipe centering device of the cold-bending product in the present invention.

[0031] Among them: 1. Conveyor frame; 2. Support frame; 3. Support rod; 4. Top plate; 5. First mounting seat; 6. Sliding rod; 7. Second mounting seat; 8. Horizontal transverse limit assembly; 801. Transverse plate; 802. Positioning seat; 803. Rotating rod; 804. Handwheel; 805. First bevel gear; 806. Second bevel gear; 807. Connecting shaft; 808. Crank; 809. Limit rod; 9. Probe holding assembly; 901. Air spring; 902. Fixed plate; 903. Groove; 904. Slot; 905. Limit seat; 906. Sliding rod; 907. Slider; 908. Pin; 909. Probe body. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0033] Example 1:

[0034] like Figure 1-2 As shown, the welded pipe centering device for cold-bent products provided by the utility model includes a conveyor frame 1 and a slide rod 6. The outer surface of the slide rod 6 is slidably connected to a second mounting seat 7. The second mounting seat 7 is fixed with a horizontal lateral movement limit assembly 8 on a side close to the conveyor frame 1 by bolts. The horizontal lateral movement limit assembly 8 is provided with a probe holding assembly 9 on a side close to the conveyor frame 1.

[0035] See also Figure 4 The horizontal lateral movement limit assembly 8 in this example specifically includes a lateral movement plate 801 and a rotating rod 803 fixedly installed on a side of the second mounting seat 7 close to the conveyor frame 1. The outer surface of the rotating rod 803 is fixedly installed with a first bevel gear 805, the outer surface of the first bevel gear 805 is meshed with a second bevel gear 806, the inner surface of the second bevel gear 806 is fixedly installed with a connecting shaft 807, the other end of the connecting shaft 807 away from the second bevel gear 806 is fixedly installed with a crank 808, and the other end of the crank 808 away from the connecting shaft 807 is fixedly installed with a limiting rod 809.

[0036] See also Figure 6 The probe holding assembly 9 in this example includes an air spring 901 and a slider 907 fixedly installed on the side of the transverse plate 801 close to the conveyor frame 1. The outer surface of the slider 907 is provided with a pin 908 and a probe body 909.

[0037] Specifically, a support frame 2 is fixedly installed on the conveyor frame 1, and a support rod 3 is fixedly installed on the outer surface of the support frame 2. A top plate 4 is fixedly installed on the other end of the support frame 2 and the support rod 3 away from the conveyor frame 1. The cross-section of the support frame 2 and the support rod 3 is a "triangular" structure. The advantage is that when assembling the equipment, the support frame 2 is fixed on the conveyor frame 1, and then the support rod 3 is installed on the support frame 2, and finally the top plate 4 is installed on the top of the support frame 2 and the support rod 3. The triangular structure can ensure the stability of the top plate 4, providing stable support for the components subsequently installed on the top plate 4.

[0038] As a further illustration, combined Figure 3 As shown, in this example, a first mounting seat 5 is fixedly mounted on the other end of the top plate 4 away from the conveyor frame 1 , and a sliding rod 6 is fixedly mounted on the inner surface of the first mounting seat 5 .

[0039] In this way, after the top plate 4 is installed, the first mounting seat 5 is fixed to the corresponding position of the top plate 4, and then the slide bar 6 is installed on the inner surface of the first mounting seat 5 to ensure that the slide bar 6 is installed firmly and horizontally. The first mounting seat 5 provides an installation position for the slide bar 6, and the slide bar 6 serves as a track for the subsequent sliding of the second mounting seat 7. This design enables the second mounting seat 7 to slide smoothly on the slide bar 6, thereby driving the horizontal lateral limit assembly 8 and the probe holding assembly 9 to adjust in the horizontal direction.

[0040] As a further illustration, combined Figure 5 As shown, in this example, a positioning seat 802 is fixedly mounted on the side of the transverse plate 801 away from the conveyor frame 1. A rotating rod 803 is rotatably mounted on the inner surface of the positioning seat 802. A handwheel 804 is fixedly mounted on the other end of the rotating rod 803 away from the positioning seat 802. Two identical first bevel gears 805, second bevel gears 806, connecting shafts 807, cranks 808, and limiting rods 809 are provided, and the two first bevel gears 805, second bevel gears 806, connecting shafts 807, cranks 808, and limiting rods 809 are symmetrically distributed about the centerline of the conveyor frame 1.

[0041] In this way, the operator rotates the handwheel 804, and the handwheel 804 drives the rotating rod 803 to rotate, and the first bevel gear 805 on the rotating rod 803 rotates accordingly, and the second bevel gear 806 engaged with the first bevel gear 805 also rotates. The second bevel gear 806 drives the crank 808 to rotate through the connecting shaft 807, and then the limiting rod 809 rotates, thereby evenly limiting the welding pipe on both sides in the horizontal direction to avoid the deviation of the welding pipe due to uneven force on one side.

[0042] Example 2:

[0043] This example further provides a specific optimization solution based on the solution in Example 1.

[0044] Combine Figure 5 and 6 As shown, in this example, a fixed plate 902 is fixedly installed on the other end of the air spring 901 away from the transverse plate 801, and a groove 903 passing through the fixed plate 902 and a plurality of slots 904 distributed at equal intervals are provided on the side of the fixed plate 902 close to the conveyor frame 1. A limiting seat 905 is fixedly installed on the side of the fixed plate 902 close to the transverse plate 801, and the slots 904 are adapted to the pin 908.

[0045] In this way, the air spring 901 can provide a certain buffer for the probe body 909, reduce the damage to the probe caused by the impact force that may be generated when the weld pipe contacts the probe, extend the life of the probe, and improve its fit. In addition, the design of multiple slots 904 allows the position of the probe body 909 in the vertical direction to be flexibly adjusted to ensure that the ultrasonic wave emitted by the probe body 909 passes through the center of the product weld. The limit seat 905 cooperates with the pin 908 to ensure the stability of the probe body 909 during operation and prevent it from accidental displacement.

[0046] Furthermore, in this example, the probe body 909 is located on a side of the conveyor frame 1 close to the second mounting seat 7 , a sliding rod 906 is fixedly mounted on the inner surface of the limiting seat 905 , and a slider 907 is slidably connected to the outer surface of the sliding rod 906 .

[0047] The design of the sliding rod 906 and the slider 907 enables the probe body 909 to move flexibly within a certain range. During the transportation of the welded pipe, the probe body 909 can better follow the position changes of the welded pipe.

[0048] Furthermore, in this example, the groove 903 , the slot 904 , the limiting seat 905 , the sliding rod 906 , the slider 907 , the latch 908 and the probe body 909 are provided in four portions that are equidistantly distributed and in one-to-one correspondence.

[0049] In this way, the welded pipe can be inspected from more positions and angles through four equidistantly distributed probe bodies 909. Compared with a single or a small number of probes, this layout can more comprehensively obtain the position information of the welded pipe during the transportation process, and can also reduce the detection blind area and improve the centering accuracy.

[0050] The following is an example of the working process of the welded pipe centering device for cold-bent products formed based on the above example, with reference to the accompanying drawings.

[0051] When the welded pipe centering device of this cold-bent product is in use, when assembling the equipment, the support frame 2 is fixed to the conveyor frame 1, and then the support rod 3 is installed on the support frame 2, and finally the top plate 4 is installed on the top of the support frame 2 and the support rod 3. The triangular structure can ensure the stability of the top plate 4 and provide stable support for the subsequent components installed on the top plate 4. After the top plate 4 is installed, the first mounting seat 5 is fixed to the corresponding position of the top plate 4, and then the slide bar 6 is installed on the inner surface of the first mounting seat 5 to ensure that the slide bar 6 is installed firmly and horizontally. The first mounting seat 5 provides an installation position for the slide bar 6, and the slide bar 6 serves as a track for the subsequent sliding of the second mounting seat 7. This design enables the second mounting seat 7 to slide smoothly on the slide bar 6, thereby driving the horizontal lateral limit assembly 8 and the probe holding assembly 9 to adjust in the horizontal direction.

[0052] The operator rotates the handwheel 804, which drives the rotating rod 803 to rotate. The first bevel gear 805 on the rotating rod 803 rotates accordingly, and the second bevel gear 806 engaged with the first bevel gear 805 also rotates. The second bevel gear 806 drives the crank 808 to rotate through the connecting shaft 807, and then rotates the limit rod 809, thereby evenly limiting the weld pipe on both sides in the horizontal direction to avoid the weld pipe from shifting due to uneven force on one side.

[0053] During this process, the air spring 901 can provide a certain buffer for the probe body 909, reduce the damage to the probe caused by the impact force that may be generated when the weld pipe contacts the probe, extend the life of the probe, and improve its fit. The design of multiple slots 904 allows the position of the probe body 909 in the vertical direction to be flexibly adjusted to ensure that the probe body 909 emits ultrasonic waves through the center of the product weld. The limit seat 905 cooperates with the pin 908 to ensure the stability of the probe body 909 during operation and prevent it from accidental displacement. The design of the sliding rod 906 and the slider 907 allows the probe body 909 to move flexibly within a certain range. During the transportation of the welded pipe, the probe body 909 can better follow the position changes of the welded pipe. The four equidistantly distributed probe bodies 909 can detect the welded pipe from more positions and angles. Compared with a single or a small number of probes, this layout can more comprehensively obtain the position information of the welded pipe during transportation, and can also reduce the detection blind area and improve the centering accuracy.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welded pipe centering device for cold-bent products, comprising a conveyor frame (1) and a slide bar (6), characterized in that: The outer surface of the slide rod (6) is slidably connected to a second mounting seat (7), and a horizontal lateral movement limit assembly (8) is fixedly installed on a side of the second mounting seat (7) close to the conveyor frame (1) by bolts, and a probe holding assembly (9) is provided on a side of the horizontal lateral movement limit assembly (8) close to the conveyor frame (1); The horizontal transverse movement limiting assembly (8) comprises a transverse movement plate (801) and a rotating rod (803) fixedly mounted on a side of the second mounting seat (7) close to the conveyor frame (1); a first bevel gear (805) is fixedly mounted on the outer surface of the rotating rod (803); a second bevel gear (806) is meshedly connected to the outer surface of the first bevel gear (805); a connecting shaft (807) is fixedly mounted on the inner surface of the second bevel gear (806); a crank (808) is fixedly mounted on the other end of the connecting shaft (807) away from the second bevel gear (806); and a limiting rod (809) is fixedly mounted on the other end of the crank (808) away from the connecting shaft (807).

2. The welded pipe centering device for cold-bent products according to claim 1, characterized in that: A support frame (2) is fixedly mounted on the conveyor frame (1), a support rod (3) is fixedly mounted on the outer surface of the support frame (2), a top plate (4) is fixedly mounted on the other end of the support frame (2) and the support rod (3) away from the conveyor frame (1), and the cross-sections of the support frame (2) and the support rod (3) are in a "triangular" structure.

3. The welded pipe centering device for cold-bent products according to claim 2, characterized in that: A first mounting seat (5) is fixedly mounted on the other end of the top plate (4) away from the conveyor frame (1), and a sliding rod (6) is fixedly mounted on the inner surface of the first mounting seat (5).

4. The welded pipe centering device for cold-bent products according to claim 1, characterized in that: A positioning seat (802) is fixedly mounted on one side of the transverse moving plate (801) away from the conveyor frame (1); a rotating rod (803) is rotatably mounted on the inner surface of the positioning seat (802); a hand wheel (804) is fixedly mounted on the other end of the rotating rod (803) away from the positioning seat (802); two identical first bevel gears (805), second bevel gears (806), connecting shafts (807), cranks (808) and limiting rods (809) are provided, and the two first bevel gears (805), second bevel gears (806), connecting shafts (807), cranks (808) and limiting rods (809) are symmetrically distributed about the center line of the conveyor frame (1).

5. The welded pipe centering device for cold-bent products according to claim 1, characterized in that: The probe holding assembly (9) comprises an air spring (901) and a slider (907) fixedly mounted on a side of the transverse plate (801) close to the conveyor frame (1); a latch (908) and a probe body (909) are provided on the outer surface of the slider (907).

6. The welded pipe centering device for cold-bent products according to claim 5, characterized in that: A fixed plate (902) is fixedly installed on the other end of the air spring (901) away from the transverse plate (801); a groove (903) passing through the fixed plate (902) and a plurality of slots (904) distributed at equal intervals are provided on a side of the fixed plate (902) close to the conveyor frame (1); a limit seat (905) is fixedly installed on a side of the fixed plate (902) close to the transverse plate (801); and the slots (904) are adapted to the latch (908).

7. The welded pipe centering device for cold-bent products according to claim 6, characterized in that: The probe body (909) is located on a side of the conveyor frame (1) close to the second mounting seat (7), a sliding rod (906) is fixedly mounted on the inner surface of the limit seat (905), and a slider (907) is slidably connected to the outer surface of the sliding rod (906).

8. The welded pipe centering device for cold-bent products according to claim 7, characterized in that: The groove (903), the slot (904), the limiting seat (905), the sliding rod (906), the slider (907), the latch (908) and the probe body (909) are provided with four of them distributed equidistantly and in one-to-one correspondence.

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